A quilting finishing needle method for down jackets

Abstract

The application discloses a quilting tailing needle method process for a down jacket. The tailing knot of the quilting is invisibly processed through the newly set tailing needle method, bypasses the outer surface of the door front, and is hidden in the textile of the side edge part of the door front opening. The tailing knot of the quilting is no longer like the traditional reverse needle method in the accompanying drawings of the specification, and obvious traces of different thicknesses exist, so that the tailing knot of the quilting is hidden, and the process effect of the quilting at the door front of high-end women's clothes is significantly improved. Compared with the traditional reverse needle process, the process is more beautiful and delicate.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewing process technical field, and in particular to a kind of quilting of down jacket tailing needle method process. BACKGROUND

[0002] Down jacket is the upper garment filled with down, because down has weight, under the action of gravity, if not to be restricted, down will be stacked at the lower part of clothes, neither warm nor beautiful.So down jacket (or down inner bag) all need to have quilting, in the design document of down jacket, it is generally considered that the spacing of quilting is preferably not more than 20cm, otherwise the uniformity of filling is still affected, so there are multiple quilting lines on the surface of the down jacket in the prior art.

[0003] And after quilting, the thread end at the end of quilting needs to be knotted, the most common process in the prior art is reverse needle process, as shown in the drawings of the specification, reverse sewing operation is carried out during sewing process, so that the sewing line can be reversed, thereby fixing the thread end. Figure 1

[0004] The problem of the prior art is that: as shown in the drawings of the specification, Figure 1 It can be seen that the reverse needle process will cause the end of the quilting to have a relatively thick line A1, which has a parallax with the main part of the quilting.

[0005] In the field of high-end women's clothing, there are very high requirements for the overall beauty and visual effect of the clothing, and the competition between brands is based on the elaboration of various details.The thick and thin line can be set in the inconspicuous corner of the down jacket, but the front door of the down jacket is the most intuitive place for consumers, and the line of sight repeatedly falls on the mirror self-observation or observation by friends.

[0006] Therefore, the quilting on the door of the down jacket has higher process requirements, and needs to keep the quilting simple and smooth, and should not have obvious thread knot marks and thick and thin marks.

[0007] In addition, when the down jacket is bound with a male buckle and a female buckle, a fixing member needs to be provided.The fixing member and the male buckle (or the female buckle) are located on the two sides of the door, the fixing member is provided with a protruding part connected with the male buckle (or the female buckle), and the door is provided with a hole through which the protruding part passes, and the fixing member is fixed on the door with the male buckle (or the female buckle) in this way.

[0008] The hole on the door penetrates the textile, although it is closed by the installation of the male and female buckles and the fixing member, due to the metal riveting structure of the male and female buckles, the hole around the hole will appear a gap with use, leading to the phenomenon of down running, and the filling material exposed and lost from the gap, affecting the quality and beauty of the down jacket.

[0009] ​However, the existing process is difficult to meet the above requirements, therefore, it is necessary to improve the process of the end stitching of the quilting line of the parka. SUMMARY

[0010] In order to solve the above technical problems, the present application provides a process for the end stitching of the quilting line of a parka.

[0011] The technical solution of the present application is a process for the end stitching of the quilting line of a parka, comprising the following steps,

[0012] Step S1, place the parka's door collar fabric on the template of the automatic quilting machine, the template is a hinge structure, provided with several quilting grooves, hook needles or clamps for fixing the door collar fabric, the quilting groove is provided with a horse tail lining, the horse tail lining includes a glue strip part bonded to the template, and several elastic strip parts of comb tooth structure extending into the quilting groove, the several elastic strip parts flatten the folds of the door collar fabric at the corresponding position of the quilting groove, and the length of the quilting groove is greater than the required quilting length of the door collar fabric;

[0013] Step S2, assemble the template to the automatic quilting machine, the automatic quilting machine follows the preset quilting trajectory program to sew quilting lines on the door collar fabric corresponding to each quilting groove, the quilting line includes a line head and a line tail, the door collar fabric includes a door collar opening side edge part, the line head is on the door collar fabric, and the line tail exceeds the door collar opening side edge part and is wound with the several elastic strip parts to form an extended line part;

[0014] Step S3, remove the door collar fabric from the template, use the deformation of the elastic strip part to remove the extended line part, and knot the side of the extended line part close to the door collar opening side edge part to form a first knot part;

[0015] Step S4, operate a sewing needle to enter the door collar opening side edge part and exit at a certain distance to form a stitch, the sewing needle tail carries a pull line, one end of the pull line is knotted with the extended line to form a second knot part, and the other end enters the door collar opening side edge part and exits;

[0016] Step S5, pull the pull line towards the exit direction to tighten, drive the extended line part to enter the door collar opening side edge part from the entry port, tighten the first knot part and the second knot part, make the extended line part tight and the second knot part close to the first knot part to form a third knot part with a larger volume than the entry port, and make the third knot part clamped in the door collar opening side edge part;

[0017] Step S6, smooth the door collar opening side edge part, trim the excess pull line at the entry port, and complete the end knotting of one quilting line.

[0018] Step S7, repeat steps S3 to S6 to end knot each quilting line on the door collar fabric.

[0019] Further arrangement of the present application: the step S4 further comprises an operation table, the operation table comprises a table top, a magnetic pressing plate and a plurality of hooking needles, the door placket textile is laid on the table top, the magnetic pressing plate flattens the door placket textile and is magnetically attracted to the table top, the magnetic pressing plate is provided with a cantilever part, the cantilever part is provided with a plurality of installation grooves parallel to the quilting direction, the installation grooves are provided with rotating holes on the side, each hooking needle is arranged in each installation groove, the hooking needle comprises a wrench part, a rotating shaft and an arc-shaped needle head, the rotating shaft is rotationally matched with the rotating hole, the arc-shaped needle head penetrates the installation groove and faces the door placket textile, the arc-shaped needle head rotates around the rotating shaft, enters the door placket textile and hooks the side edge part of the door placket opening to rise in the width direction; the wrench part exceeds the installation groove and faces away from the door placket textile, the wrench part drives the arc-shaped needle head to enter or exit the door placket textile.

[0020] Further arrangement of the present application: the rotating hole is an oblong hole, and the length direction is arranged along the quilting direction, the rotating shaft is rolling frictionally matched with the oblong hole, each hooking needle adjusts the position in the oblong hole according to the profile change of the door placket textile.

[0021] Further arrangement of the present application: the table top is provided with a plurality of installation grooves and hooking needles, and is oppositely arranged with the magnetic pressing plate, the side edge part of the door placket opening is oppositely raised.

[0022] Further arrangement of the present application: the template is provided with a plurality of pattern holes corresponding to the installation position of the door placket textile snap fastener, the process further comprises step S2.5, after the automatic quilting machine unloads the template, the template is installed on a computer pattern machine, the computer pattern machine sews concentric loops corresponding to the pattern holes, and the hole diameter of the snap fastener is smaller than the concentric loops and penetrates the concentric loops.

[0023] Beneficial effects of the present application: I. Through the newly arranged end needle method, the knot of the quilting line tail is invisibly processed, bypasses the outer surface of the door placket and hides into the textile of the side edge part of the door placket opening, and the same can be wound to the inner surface of the door placket, but the distance of the side edge part of the door placket opening is shorter, the knot fixing effect is better, and the leading line is in the vertical direction along the door placket, therefore, as preferred, the specific effects are as follows.

[0024] Through the horse tail lining arranged at the template quilting groove, the quilting line can exceed the door placket textile and form an extended line part.

[0025] The sewing machine cannot walk the empty needle, the reason is that the working principle of the sewing machine determines that it must use the upper thread and the lower thread at the same time to form a complete stitch. The thread working steps of the sewing machine include that the needle carries the upper thread downward and is wound with the lower thread on the independent lock core, then the needle carries the two threads upward and penetrates the cloth to form a stitch. If there is only the lower thread without the upper thread, a complete stitch cannot be formed.

[0026] And the setting of the ponytail lining, so that the upper line, the lower line can pass through the elastic strip-shaped part of the comb tooth structure of the ponytail lining, and wrap on the elastic strip-shaped part, form an extension line part, without this ponytail lining, the empty needle will not form an extension line part.

[0027] And the elastic strip-shaped part can also flatten the local wrinkles of the textile at the quilting groove, improving the quality of quilting, and because of the deformation characteristics of the elastic strip-shaped part, it can automatically pop open when hitting the machine needle, avoiding puncture and needle jamming, and facilitating the dismounting of the extension line part from the elastic strip-shaped part.

[0028] After the door flap textile is dismounted from the template, the side of the extension line part near the door flap opening side edge part is knotted to form a first knot part; then according to steps S4 to S6, a traction line (as shown in the drawings) is inserted into the door flap opening side edge part, the tail of the traction line is knotted with the extension line part (as shown in the drawings), and the other end is pulled to pull the extension line part and the first knot part into the door flap opening side edge part (as shown in the drawings). Figure 7 Figure 8 The first knot part and the second knot part are tightened to form a third knot part with a diameter larger than the needle entry port, so that the third knot part is clamped in the door flap opening side edge part, and after trimming the excess traction line, the end knot of the quilting line is completely hidden in the fabric of the door flap opening side edge part (as shown in the drawings). Figure 8 Figure 9

[0029] Using the above process, the end knot of the quilting line no longer has obvious traces of different thicknesses as in the traditional reverse needle method (as shown in the drawings), so that the end knot of the quilting line is hidden, significantly improving the process effect of the quilting line at the door flap of high-end women's clothing, and being more beautiful and delicate than the traditional reverse needle process. Figure 1 II. In the further setting of the present application, in order to reduce the operation difficulty of process step S4, an operation table is also designed, through the structural design of the table top, magnetic pressing plate and a plurality of hook needle pieces, the magnetic pressing plate can assist in fixing the door flap textile, and at the same time, the installation groove, rotating hole (oblong hole) and hook needle pieces arranged on the cantilever part can be used to make the arc-shaped needle head rotate around the rotating shaft to enter or exit the fabric of the door flap opening side edge part, and the arc-shaped needle head is hooked and fixed to conveniently make the door flap opening side edge part protrude in the width direction and be fixed. The operator does not need to twist the door flap opening side edge part and then insert the needle, but under the assistance of the operation table, the operator can quickly complete the knotting and needle insertion work.

[0030]

[0031] ​​​​The operating table is further designed to accommodate the varying edge contours of different placket fabrics. The position of the hook pieces is adjusted using elongated holes, allowing each hook piece to be positioned according to its corresponding contour. Furthermore, the symmetrical arrangement of the hook pieces creates a raised area on both sides of the placket opening in the width direction, enhancing the smoothness and stability of this area.

[0032] Third, by setting up step S2.5, a computerized pattern sewing machine is used to sew concentric loops at the installation position of the snap fastener. The installation hole passes through the concentric loops. In this way, even if there is a gap in the snap fastener, the filling will not leak out due to the sewing and fixing of the concentric loops, thus avoiding the phenomenon of fluff leakage. Attached Figure Description

[0033] Figure 1 This is a reference diagram of the prior art reverse needle in an embodiment of the present invention;

[0034] Figure 2 Template structure for embodiments of the present invention Figure 1 ;

[0035] Figure 3 Template structure for embodiments of the present invention Figure 2 ;

[0036] Figure 4 The operating console structure of this invention is shown in the embodiment of the invention. Figure 2 ;

[0037] Figure 5 for Figure 4 Sectional view at point AA;

[0038] Figure 6 This is a schematic diagram of the operation of the crochet hook component according to an embodiment of the present invention;

[0039] Figure 7 The process structure of this invention embodiment Figure 1 ;

[0040] Figure 8 The process structure of this invention embodiment Figure 2 ;

[0041] Figure 9 The process structure of this invention embodiment Figure 3 ;

[0042] Figure 10 This is an exploded view of the magnetic pressure plate according to an embodiment of the present invention.

[0043] Wherein, A1-reverse needle structure, 1-front closure textile, 11-front closure opening side, 12-concentric loop, 2-template, 21-quilting groove, 22-tail lining, 221-gum strip part, 222-elastic strip part, 3-quilting line, 31-extended line part, 32-first knot part, 33-third knot part, 4-pulling line, 41-second knot part, 5-operation table, 51-magnetic suction plate, 511-cantilever part, 512-mounting groove, 513-rotation hole, 52-hook needle, 521-wrench part, 522-rotation shaft, 523-arc-shaped needle.

[0044] In order to better illustrate the present embodiment, some components in the drawings may be omitted, enlarged or reduced, and do not represent the actual product size. In addition, the drawings are only used for illustrative purposes and cannot be understood as a limitation of the present patent. DETAILED DESCRIPTION

[0045] In order to make the technical solutions of the present application and its advantages clearer, the technical solutions of the present application will be further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present application, and are only used to explain the present application, but not to limit the present application. It should be noted that, in order to facilitate description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the usual design. In the case of no conflict, the embodiments in the present application and the technical features in the embodiments can be combined to obtain new embodiments.

[0046] The present application will be described in detail below with reference to the drawings, as shown in a kind of down jacket quilting 3 end needle method process, comprising the following steps, Figures 1-10 As shown in a kind of down jacket quilting 3 end needle method process, comprising the following steps,

[0047] Step S1, the front closure textile 1 of down jacket is placed on the template 2 for automatic quilting machine, the template 2 is hinged structure, is provided with a plurality of quilting groove 21, the hook needle or clamp of fixed front closure textile 1, the tail lining 22 is attached to the quilting groove 21, the tail lining 22 includes with template 2 adhesive gum strip part 221, a plurality of elastic strip part 222 of the comb tooth type structure extending towards the quilting groove 21, a plurality of elastic strip part 222 flattens the wrinkle of front closure textile 1 at the corresponding place of quilting groove 21, the length of quilting groove 21 is greater than the length of quilting 3 required by front closure textile 1;

[0048] Step S2, the template 2 is assembled to automatic quilting machine, and automatic quilting machine is according to preset quilting 3 trajectory program, and quilting 3 is sewn on front closure textile 1 in each quilting groove 21, and the quilting 3 includes line head, line tail, the front closure textile 1 includes front closure opening side 11, the line head is on the front closure textile 1, and the line tail exceeds the front closure opening side 11, and is wound to form extended line part 31 with a plurality of elastic strip part 222;

[0049] Step S3, the door flap textile 1 is removed from the template 2, the elongated line part 31 is removed by deforming the elastic strip-shaped part 222, the side of the elongated line part 31 adjacent to the door flap opening side edge part 11 is knotted to form a first knot part 32;

[0050] Step S4, a sewing needle is operated to enter the door flap opening side edge part 11 and exit at a certain distance to form a stitch, the sewing needle needle tail carries a pull line 4, one end of the pull line 4 is knotted with the elongated line to form a second knot part 41, and the other end enters the door flap opening side edge part 11 and exits;

[0051] Step S5, the pull line 4 is pulled towards the exit direction to tighten, the elongated line part 31 is driven by the entry port to enter the door flap opening side edge part 11, the first knot part 32 and the second knot part 41 are tightened, the elongated line part 31 is tightened, and the second knot part 41 is close to the first knot part 32 to form a third knot part 33 with a larger volume than the entry port, so that the third knot part 33 is clamped in the door flap opening side edge part 11;

[0052] Step S6, the door flap opening side edge part 11 is smoothed, and the excess pull line 4 at the entry port is trimmed to complete the end knot of the quilting line 3.

[0053] Step S7, steps S3 to S6 are repeated to knot the end of each quilting line 3 on the door flap textile 1.

[0054] The step S4 further comprises an operation table 5, the operation table 5 comprises a table top, a magnetic pressing plate 51, and a plurality of crochet pieces 52, the door flap textile 1 is laid on the table top, the magnetic pressing plate 51 flattens the door flap textile 1 and is magnetically attracted to the table top, the magnetic pressing plate 51 is provided with a cantilever part 511, the cantilever part 511 is provided with a plurality of installation grooves 512 parallel to the direction of the quilting line 3, the side of the installation groove 512 is provided with a rotating hole 513, and each crochet piece 52 is arranged in each installation groove 512, the crochet piece 52 comprises a wrench part 521, a rotating shaft 522, and an arc-shaped needle head 523, the rotating shaft 522 is rotationally matched with the rotating hole 513, the arc-shaped needle head 523 passes through the installation groove 512 to face the door flap textile 1, the arc-shaped needle head 523 rotates around the rotating shaft 522 to enter the door flap textile 1 and hook the door flap opening side edge part 11 to rise in the width direction;

[0055] The wrench part 521 exits the installation groove 512 away from the door flap textile 1, and the lever wrench part 521 drives the arc-shaped needle head 523 to enter or exit the door flap textile 1.

[0056] The through hole 513 is an oblong hole, and the length direction is arranged along the direction of the quilting line 3, the rotating shaft 522 is in rolling friction with the oblong hole, and each hook needle part 52 adjusts the position in the oblong hole according to the contour change of the door placket textile 1.

[0057] The table top is provided with a plurality of mounting grooves 512 and hook needle parts 52, and is arranged in a supporting manner with the magnetic suction pressing plate 51, and the hooking door placket opening side edge part 11 is arranged in a supporting manner with the magnetic suction pressing plate 51.

[0058] The template 2 is provided with a plurality of pattern holes 23 corresponding to the installation position of the door placket textile 1 snap fastener, and the process further comprises the step S2.5 that after the automatic quilting machine unloads the template 2, the template 2 is installed on the computer pattern machine, the computer pattern machine sews the concentric coil 12 corresponding to the pattern hole 23, and the installation hole diameter of the snap fastener is smaller than the concentric coil 12 and passes through the concentric coil 12.

[0059] The beneficial effects of the present application are as follows.

[0060] The horse tail lining 22 arranged at the quilting groove 21 of the template 2 enables the quilting line 3 to go out of the door placket textile 1 and form the extended line part 31.

[0061] The sewing machine cannot go empty needle, and the reason is that the working principle of the sewing machine determines that it must use the upper thread and the lower thread at the same time to form a complete stitch. The working steps of the sewing machine thread include that the needle moves downward with the upper thread, and the lower thread on the independent lock core is wound together, and then the needle penetrates the fabric with the two threads to form a stitch. If there is only the lower thread without the upper thread, a complete stitch cannot be formed.

[0062] The setting of the horse tail lining 22 enables the upper thread and the lower thread to pass through the elastic strip part 222 of the comb-shaped structure of the horse tail lining 22 and be wound on the elastic strip part 222 to form the extended line part 31. If there is no such horse tail lining 22, the empty needle cannot form the extended line part 31.

[0063] The elastic strip part 222 can also flatten the local wrinkle of the textile at the quilting groove 21, improve the sewing quality of the quilting line 3, and because of the deformation characteristics of the elastic strip part 222, the elastic strip part 222 can automatically pop up when hitting the needle, avoiding puncture and needle jamming, and facilitating the dismounting of the extended line part 31 from the elastic strip part 222.

[0064] After the placket fabric 1 is removed from the template 2, the extension line 31 is knotted on the side of the placket opening 11 to form the first knot 32; then, following steps S4 to S6, a guide line 4 (as shown in the instruction manual) is threaded through the placket opening side 11. Figure 7 As shown), the traction line 4 is knotted at its tail end to the extension line 31 (as per the instruction manual). Figure 8 (As shown in the upper side diagram), when the other end is pulled, the extension line 31, along with the first knot 32, can be pulled into the side part 11 of the placket opening (as shown in the instruction manual). Figure 8 (As shown in the lower diagram), then tighten the first knot 32 and the second knot 41 to form a third knot 33 with a diameter larger than the needle inlet, so that the third knot 33 is stuck inside the side edge of the placket opening 11. After trimming off the excess traction thread 4, the end knot of the quilting thread 3 is completely hidden in the fabric of the side edge of the placket opening 11 (as shown in the instruction manual). Figure 9 (As shown).

[0065] Using the above process, the knot at the end of quilting thread 3 is no longer as shown in the instruction manual. Figure 1 Unlike traditional backstitching, which leaves obvious traces of varying thickness, this technique conceals the knot at the end of the quilting thread 3, significantly enhancing the craftsmanship of the quilting thread 3 on the placket of high-end women's clothing. Compared to traditional backstitching, it is more aesthetically pleasing and refined.

[0066] Thirdly, in a further aspect of this invention, to reduce the operational difficulty of process step S4, an operating table 5 is designed. Through the structural design of the table surface, the magnetic pressure plate 51, and several hook needles 52, the magnetic pressure plate 51 assists in fixing the placket fabric 1. Simultaneously, the mounting groove 512, the rotating hole 513 (elongated hole), and the hook needles 52 in the cantilever portion 511 work together to allow the arc-shaped needle 523 to rotate around the rotating shaft 522 and enter or exit the fabric at the placket opening side 11. The hooking and fixing action of the arc-shaped needle 523 conveniently raises and fixes the placket opening side in the width direction. This eliminates the need for the operator to tediously twist the placket opening side 11 before inserting the needle. With the assistance of the operating table 5, the operator can quickly complete the knotting and threading work.

[0067] The operating table 5 is further designed to accommodate the varying edge contours of different placket fabrics 1. The position of the hook needles 52 is adjusted using elongated holes, allowing each hook needle 52 to be positioned according to its corresponding contour. Furthermore, the symmetrical arrangement of the hook needles 52 causes the sides of the placket opening 11 to bulge in the width direction, enhancing the flatness and stability of this area.

[0068] III. By setting through step S2.5, concentric loops 12 are sewn in advance at the snap fastener installation position by a computerized sewing machine, and the installed holes pass through from the inside of the concentric loops 12, so even if the snap fastener has a gap, since the concentric loops 12 are fixed by sewing, the filler will not leak out, avoiding the problem of loose filling.

[0069] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings. It should be understood by those skilled in the art that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the present application, and the technical solutions after these changes or replacements will all fall within the protection scope of the present application.

Claims

1. A finishing stitch technique for quilting down jackets, characterized in that: Includes the following steps, Step S1: Place the placket fabric of the down jacket on a template for an automatic quilting machine. The template has a hinge structure and is provided with several quilting grooves, hooks or clips for fixing the placket fabric. A horsehair lining is attached to the quilting grooves. The horsehair lining includes an adhesive strip that is bonded to the template and several elastic strips with a comb-like structure extending into the quilting grooves. The elastic strips flatten the folds of the placket fabric at the corresponding quilting grooves. The length of the quilting grooves is greater than the required quilting thread length of the placket fabric. Step S2: The template is assembled onto the automatic quilting machine. The automatic quilting machine sews quilting threads on the placket fabric according to the preset quilting track program, corresponding to each quilting groove. The quilting thread includes a thread head and a thread tail. The placket fabric includes a placket opening side portion. The thread head is located on the placket fabric. The thread tail extends beyond the placket opening side portion and wraps with several elastic strips to form an extension thread portion. Step S3: Remove the placket fabric from the template, and use the deformation of the elastic strip to remove the extension line. Tie a knot on the side of the extension line near the placket opening to form the first knot. Step S4: Insert a sewing needle into the side of the placket opening and exit the needle at a certain distance to form a stitch. The sewing needle tail carries a traction thread. One end of the traction thread is knotted with the extension thread to form a second knot. The other end enters the side of the placket opening with the sewing needle and exits. Step S5: Pull the traction line towards the needle exit direction to tighten it, causing the extension line to enter the side of the placket opening from the needle inlet. Tighten the first knot and the second knot, so that the extension line is tightened and the second knot is close to the first knot to form a third knot with a volume larger than the needle inlet, so that the third knot is stuck in the side of the placket opening. Step S6: Smooth the side of the placket opening, trim off any excess traction thread at the needle point, and finish the quilting by tying a knot. Step S7: Repeat steps S3 to S6 to finish and knot the quilting threads on the placket fabric.

2. The quilting finishing stitch process for down jackets according to claim 1, characterized in that: Step S4 further includes an operating table, which includes a tabletop, a magnetic pressure plate, and several first hook pieces. The placket fabric is laid on the tabletop, and the magnetic pressure plate flattens the placket fabric and magnetically attracts it to the tabletop. The magnetic pressure plate is provided with a cantilever portion, and the cantilever portion is provided with several first mounting grooves parallel to the quilting direction. The side of the first mounting groove is provided with a rotating hole. Each first hook piece is respectively set in each first mounting groove. Each first hook piece includes a wrench portion, a rotating shaft, and an arc-shaped needle. The rotating shaft and the rotating hole are rotated together. The arc-shaped needle passes through the first mounting groove and faces the placket fabric. The arc-shaped needle rotates around the rotating shaft, enters the placket fabric, and hooks the side of the placket opening to bulge in the width direction. The wrench extends beyond the mounting groove to the side away from the placket fabric, and the wrench drives the arc-shaped needle into or out of the placket fabric.

3. The quilting finishing stitch process for down jackets according to claim 2, characterized in that: The rotating hole is an oblong hole, and its length direction is set along the quilting direction. The rotating shaft and the oblong hole are in rolling friction engagement. Each first hook needle adjusts its position in the oblong hole according to the change of the fabric outline of the placket.

4. The quilting finishing stitch process for down jackets according to claim 3, characterized in that: The table surface is provided with several second mounting slots and second hooks, which are arranged in a counter-supporting manner with the magnetic pressure plate, so that the side of the placket opening is raised on the opposite side.

5. The finishing stitch process for quilting down jackets according to claim 1, characterized in that: The template has several pattern holes corresponding to the buttonhole installation positions of the placket fabric. The process also includes step S2.5: after the automatic quilting machine removes the template, the template is installed on the computer pattern machine, which sews concentric loops corresponding to the pattern holes. The diameter of the hole for the buttonhole installation is smaller than that of the concentric loop and passes through the concentric loop.

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