Auxiliary positioning structure for sewing coat zipper
By incorporating a structural design that includes a base plate, interlayer plate, and auxiliary plate, along with a seam opening and clamping plate, the problem of positional shift during zipper sewing on outerwear is solved, achieving a precise and convenient sewing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 富德士服装(厦门)有限公司
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-26
AI Technical Summary
The zipper of the coat is prone to shifting when sewing the inner or outer windproof layer, resulting in inaccurate sewing position and making it difficult to achieve fast and accurate sewing.
The structure consists of a base plate, a first interlayer plate, a second interlayer plate, and an auxiliary plate. By setting up seams and movable connections between the interlayer plates, along with buckles and clamping plates, the accurate positioning and fixation of the inner windproof layer and the zipper are ensured.
It enables precise and convenient sewing of zippers, inner windproof layers, and outer garments, preventing positional shifts during sewing and improving sewing efficiency and accuracy.
Smart Images
Figure CN224280717U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sewing tools, and in particular to an auxiliary positioning structure for sewing a coat zipper. Background Technology
[0002] Some coats have zippers, and the seam where the zipper connects to the coat is thin, which can cause air to leak in. Therefore, some coats have an extra inner or outer windproof layer sewn at the zipper. However, during the sewing process, the position of the separately sewn inner or outer windproof layer is easy to shift, making it impossible to align with the zipper seam and making it difficult to achieve fast and accurate sewing. Summary of the Invention
[0003] To address the aforementioned issues, this application provides an auxiliary positioning structure for sewing zippers on outer garments.
[0004] The auxiliary positioning structure for sewing a coat zipper provided in this application adopts the following technical solution:
[0005] An auxiliary positioning structure for sewing a zipper on an outer coat includes a base plate, a first interlayer plate, a second interlayer plate, and an auxiliary plate. The base plate provides a place for the outer coat. The first interlayer plate is movably connected to the base plate and has a first sewing opening. After the first interlayer plate covers the outer coat, an inner windproof layer is placed on the first interlayer plate and covers the first sewing opening. The second interlayer plate is movably connected to the side of the first interlayer plate away from the base plate and has a second sewing opening. After the second interlayer plate covers the inner windproof layer, the zipper is placed on the second interlayer plate and covers the second sewing opening. The auxiliary plate is movably connected to the second interlayer plate and has a third sewing opening. An external sewing machine sequentially passes through the third sewing opening, the second sewing opening, and the first sewing opening to sew the zipper, the inner windproof layer, and the outer coat together.
[0006] By adopting the above technical solution, the outer coat is placed on the base plate, then the first interlayer plate is lifted and covered over the seam of the outer coat, the inner windproof layer is covered over the first seam, then the second interlayer plate is lifted and covered over the first interlayer plate, while the inner windproof layer is covered, then the zipper is covered over the second seam, and finally the auxiliary plate is lifted and covered over the zipper. The sewing needle of the external sewing machine is aligned with the third seam, and the sewing machine passes through the third seam, the second seam, and the first seam in sequence, thereby sewing the zipper, the inner windproof layer and the outer coat into one piece, so as to achieve precise and convenient one-piece sewing.
[0007] Optionally, both the first and second interlayer boards are provided with fasteners; the fasteners are located on one side of the first or second sewing opening and extend toward the first or second sewing opening.
[0008] By adopting the above technical solution, the inner windproof layer covers the first sewing opening, and one of its edges is inserted under the fastener at the first sewing opening. The zipper covers the second sewing opening, and one of its edges is inserted under the fastener at the second sewing opening. The fastener determines the position of the inner windproof layer and the zipper. At the same time, the fastener presses down on the inner windproof layer and the zipper, providing a certain anti-displacement effect, so that the positions of the inner windproof layer and the zipper cannot be displaced during sewing, and the sewing position is more accurate.
[0009] Optionally, a gap is formed on the wall surface of the first sewing opening and the second sewing opening, and the two gaps form a set to form a clamping piece; a set of clamping pieces is provided at both ends of the first sewing opening and the second sewing opening.
[0010] By adopting the above technical solution, when it is necessary to install the inner windproof layer or zipper, the inner windproof layer or zipper is placed over the first or second sewing opening, and after placement, the clamping piece is pried open. The clamping piece is lifted up part of the clamping piece and the side of the inner windproof layer or zipper away from the buckle is inserted. Then the clamping piece is released. After the clamping piece loses its tension, it returns to its original position, thus clamping the inner windproof layer or zipper, thereby fixing the position of the inner windproof layer or zipper and avoiding the situation where the position shifts due to the force of the sewing machine during the sewing process.
[0011] Optionally, positioning strips are provided on the first and second interlayer plates.
[0012] By adopting the above technical solution, the inner windproof layer or zipper is placed with the positioning strip to quickly locate the required sewing position. Then, the inner windproof layer is fixed to the buckle with the clamping piece, and the positioning strip blocks the corners of the inner windproof layer, thus blocking the movement path of the inner windproof layer and preventing the inner windproof layer from shifting. This provides quick positioning of the sewing point while improving the stability of the inner windproof layer.
[0013] Optionally, the first sandwich panel, the second sandwich panel, and the auxiliary panel are all made of plastic.
[0014] By adopting the above technical solutions, the plastic material can also make the first and second interlayer panels lighter and easier to open or cover. When the seams of the outer cover are thick, the elasticity and toughness of the plastic can be used to make the first or second interlayer panel bulge slightly without affecting the accuracy of the sewing.
[0015] Optionally, the first sandwich panel, the second sandwich panel, and the auxiliary panel are all made of transparent material.
[0016] By adopting the above technical solution, the first interlayer plate, the second interlayer plate, and the auxiliary plate in a transparent state can penetrate through one layer of themselves, allowing observation of whether the outer coat, inner windproof layer, or zipper of the previous layer is placed correctly.
[0017] Optionally, the auxiliary plate is larger than the first sandwich panel and the second sandwich panel, but smaller than the placement base plate; the placement base plate is also provided with a clamping member for connecting with the auxiliary plate.
[0018] By adopting the above technical solution, the auxiliary plate is fixed when it is covered by the base plate, which prevents the auxiliary plate from being lifted during the sewing process. The auxiliary plate is also used to press the first interlayer plate, the second interlayer plate, the inner windproof layer, the zipper and the outer cover.
[0019] Optionally, the clamping component includes a pivot shaft and a clamping plate; a pivot hole is provided on the placement base plate, and the position of the pivot hole is outside the coverage area of the auxiliary plate; the pivot shaft is pivotally connected to the pivot hole, and the clamping plate is installed on the pivot shaft.
[0020] By adopting the above technical solution, the clamping plate can rotate along the pivot hole via the pivot shaft. During the rotation, the clamping plate rotates to the range of the auxiliary plate, thereby preventing the auxiliary plate from being lifted and stabilizing the auxiliary plate.
[0021] In summary, this application includes at least one of the following beneficial technical effects:
[0022] 1. Place the coat on the base plate, then lift the first interlayer plate and cover the seam of the coat. Cover the first seam with the inner windproof layer. Then lift the second interlayer plate and cover the first interlayer plate, while covering the inner windproof layer. Next, cover the zipper with the second seam. Finally, lift the auxiliary plate and cover the zipper. Align the sewing needle of the outer sewing machine with the third seam. The sewing machine passes through the third seam, the second seam, and the first seam in sequence, thereby sewing the zipper, the inner windproof layer, and the coat together to achieve a precise and convenient one-piece sewing.
[0023] 2. The inner windproof layer covers the first seam opening, and one of its edges is inserted under the button frame at the first seam opening. The zipper covers the second seam opening, and one of its edges is inserted under the button frame at the second seam opening. The button frame is used to determine the position of the inner windproof layer and the zipper. At the same time, the button frame presses down on the inner windproof layer and the zipper to provide a certain anti-displacement effect, so that the position of the inner windproof layer and the zipper cannot be displaced during sewing, and the sewing position is more accurate.
[0024] 3. When it is necessary to install the inner windproof layer or zipper, cover the first or second seam opening with the inner windproof layer or zipper, place it, pry open the clamping piece, lift the clamping piece a bit and insert the side of the inner windproof layer or zipper away from the buckle, then release the clamping piece. After the clamping piece loses tension, it will return to its original position, thus clamping the inner windproof layer or zipper and fixing its position, preventing the position from shifting due to the force of the sewing machine during the sewing process;
[0025] 4. Place the inner windproof layer or zipper with the positioning strip to quickly locate the position to be sewn. Then, fix the inner windproof layer to the buckle with the clamping piece. The positioning strip also blocks the corners of the inner windproof layer, thus blocking the movement path of the inner windproof layer and preventing it from shifting. This provides quick positioning of the sewing point while improving the stability of the inner windproof layer. Attached Figure Description
[0026] Figure 1 This is a three-dimensional structural diagram of the positioning structure in one embodiment of this application;
[0027] Figure 2 This is a top view schematic diagram of the positioning structure in some embodiments of this application;
[0028] Figure 3 This is a top view schematic diagram of the second type of positioning structure in another embodiment of this application;
[0029] The markings in the attached diagram are as follows: 1. Placement base plate; 11. Pivot hole; 12. Magnetic suction part; 13. Sliding groove; 2. First interlayer plate; 21. First seam opening; 22. Positioning strip; 3. Second interlayer plate; 31. Second seam opening; 4. Auxiliary plate; 41. Third seam opening; 42. Adsorption part; 5. Buckle frame; 6. Clamping piece; 7. Clamping element; 71. Pivot shaft; 72. Clamping plate. Detailed Implementation
[0030] The following specific examples illustrate the implementation methods of this application. Those skilled in the art can easily understand other advantages and effects of this application from the information disclosed herein. This application can also be implemented or applied through other different specific embodiments, and various details in this application can be modified or changed according to different viewpoints and application systems without departing from the spirit of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0031] The embodiments of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the application. This application may be embodied in many different forms and is not limited to the embodiments described herein.
[0032] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics represented in connection with that embodiment or example, which are included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate different embodiments or examples represented in this application, as well as features of different embodiments or examples.
[0033] Furthermore, the terms "first" and "second" are used only to indicate an objective and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0034] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.
[0035] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.
[0036] This application discloses an auxiliary positioning structure for sewing a coat zipper.
[0037] An auxiliary positioning structure for sewing a coat zipper, reference Figure 1 As shown, it includes a base plate 1, a first interlayer plate 2, a second interlayer plate 3, and an auxiliary plate 4; the base plate 1 provides a place for the outer cover, which can be made of plastic or wood and can be laid flat on the surface of the base plate 1.
[0038] The first interlayer plate 2 is movably connected to the placement base plate 1. The movable connection can be a hinge, such as by setting a hinge frame and several buckles, or it can be adhesive tape. That is, part of the tape is attached to the first interlayer plate 2 and the other part is attached to the placement base plate 1. The first interlayer plate 2 can be folded along the tape to cover the placement base plate 1 or the outer cover. The size of the first interlayer plate 2 is smaller than that of the placement base plate 1, so that it can only cover the position where the zipper needs to be sewn on the outer cover, and avoid the first interlayer plate 2 being pushed up because the outer cover is too big.
[0039] The first interlayer plate 2 has a first sewing opening 21, which provides a sewing channel for an external sewing machine. After the first interlayer plate 2 covers the outer coat, the inner windproof layer is placed on the first interlayer plate 2 and covers the first sewing opening 21.
[0040] The second interlayer plate 3 is movably connected to the side of the first interlayer plate 2 away from the placement base plate 1. This movable connection can be the same as the connection method between the first interlayer plate 2 and the placement base plate 1, and will not be described again here.
[0041] The second interlayer panel 2 has a second sewing opening 31. After the second interlayer panel 3 covers the inner windproof layer, the zipper is placed on the second interlayer panel 3 and covers the second sewing opening 31. The style and diameter of the second sewing opening 31 can be the same as the first sewing opening 21, or it can be determined according to the requirements.
[0042] The auxiliary plate 4 is movably connected to the second interlayer plate 3, or it can be movably connected to the placement base plate 1, or the placement base plate 1 can be folded to form the auxiliary plate 4. The movable connection method is the same as the connection method of the first interlayer plate 2 and the placement base plate 1 mentioned above, and will not be described again here.
[0043] The auxiliary plate 4 has a third sewing opening 41, and the auxiliary plate 4 covers the second interlayer plate 3 and the zipper.
[0044] Specifically, the outer garment is placed on the base plate 1, and the side to be sewn is attached to the movable connection point between the first interlayer plate 2 and the base plate 1, ensuring accurate positioning of the seam on the outer garment during sewing. Then, the first interlayer plate 2 is lifted and covered over the sewn area of the outer garment, and the inner windproof layer is covered over the first seam opening 21. Next, the second interlayer plate 3 is lifted and covered over the first interlayer plate 2, while simultaneously covering the inner windproof layer. Then, the zipper is covered over the second seam opening 31, and finally, the auxiliary plate 4 is lifted and covered over the zipper. The zipper, the first seam opening 21, the second seam opening 31 and the third seam opening 41 are all located on the same vertical plane. Then, the auxiliary positioning structure is pushed to the bottom of the external sewing machine, and the base plate 1 is placed against the bottom edge of the external sewing machine so that the sewing needle of the external sewing machine is aligned with the third seam opening 41. After the sewing machine is started, the sewing machine passes through the third seam opening 41, the second seam opening 31 and the first seam opening 21 in sequence, thereby sewing the zipper, the inner windproof layer and the outer coat into one piece, so as to achieve precise and convenient one-piece sewing.
[0045] The first interlayer plate 2 can be used to place a zipper, while the second interlayer plate 3 can be used to place an outer windproof layer, thus obtaining the outer windproof layer. If two windproof layers are needed, the inner windproof layer can be sewn first, then the outer coat can be turned inside out, and the outer windproof layer can be placed on the second interlayer plate 3, and the auxiliary plate 4 can be covered. Then, the outer and inner windproof layers can be sewn together using a sewing machine.
[0046] Further reference Figure 2or Figure 3 As shown, both the first interlayer plate 2 and the second interlayer plate 3 are provided with a fastener 5; the fastener 5 is located on one side of the first sewing opening 21 or the second sewing opening 31 and extends toward the first sewing opening 21 or the second sewing opening 31. The main purpose of the fastener 5 is to limit the inner windproof layer and the zipper, so that when the inner windproof layer and the zipper are placed, they can be quickly aligned with the first sewing opening 21 or the second sewing opening 31.
[0047] Specifically, the inner windproof layer covers the first sewing opening 21, and one of its edges is inserted under the fastener 5 at the first sewing opening 21. The zipper covers the second sewing opening 31, and one of its edges is inserted under the fastener 5 at the second sewing opening 31. The fastener 5 is used to determine the position of the inner windproof layer and the zipper. At the same time, the fastener 5 presses down on the inner windproof layer and the zipper to provide a certain anti-displacement effect, so that the position of the inner windproof layer and the zipper cannot be displaced during sewing, and the sewing position is more accurate.
[0048] The first sewing opening 21 and the second sewing opening 31 are each equipped with two fasteners 5, located at both ends, to quickly position the inner windproof layer and the two ends of the zipper, thereby improving sewing efficiency.
[0049] Furthermore, refer to Figure 2 or Figure 3 As shown, a gap is opened on the wall surface of the first sewing opening 21 and the second sewing opening 31, and the two gaps form a group. A sheet-like structure, namely a clamping piece 6, is formed between the two gaps. A set of clamping pieces 6 is provided at both ends of the first sewing opening 21 and the second sewing opening 31. The function of the clamping piece 6 is to fix the position of the inner windproof layer and the zipper, and further prevent displacement.
[0050] The clamping piece 6 can be located on the wall of the first sewing opening 21 or the second sewing opening 31 opposite to the buckle 5, so as to work with the buckle 5 to fix the inner windproof layer or zipper simultaneously.
[0051] The base plate 1 can also be equipped with a buckle 5 to facilitate the fixing of the outer cover.
[0052] Specifically, when it is necessary to install the inner windproof layer or zipper, cover the first seam opening 21 or the second seam opening 31 with the inner windproof layer or zipper, and then pry open the clamping piece 6. Lift the clamping piece 6 a part and insert the side of the inner windproof layer or zipper away from the buckle 5. Then release the clamping piece 6. After the clamping piece 6 loses its tension, it will reset and clamp the inner windproof layer or zipper, thereby fixing the position of the inner windproof layer or zipper and preventing the position from shifting due to the force of the sewing machine during the sewing process.
[0053] Furthermore, refer to Figure 2 or Figure 3As shown, both the first interlayer plate 2 and the second interlayer plate 3 are provided with positioning strips 22. The positioning strips 22 extend along the opening direction of the first sewing opening 21 or the second sewing opening 31. They are mainly used to straighten the inner windproof layer or zipper by using the positioning strips 22 when the inner windproof layer is placed, so that the sewing point can be quickly attached.
[0054] The inner windproof layer or zipper is placed with the positioning strip 22 to quickly locate the position to be sewn. Then, the inner windproof layer is fixed to the buckle 5 by the clamping piece 6. The positioning strip 22 also blocks the corners of the inner windproof layer, thus blocking the movement path of the inner windproof layer and preventing the inner windproof layer from shifting. This provides quick positioning of the sewing point while improving the stability of the inner windproof layer.
[0055] Furthermore, the first interlayer plate 2, the second interlayer plate 3, and the auxiliary plate 4 are all made of plastic. After hardening, the plastic material provides a certain degree of elasticity and toughness. When clamping the inner windbreak layer, the clamping plate 6 can be pried open without breaking. When the clamping plate 6 is released, it can also provide a spring-like reset effect, which can be used to press the inner windbreak layer.
[0056] At the same time, the plastic material also makes the first interlayer plate 2 and the second interlayer plate 3 lighter, making it easier to lift or cover. When the seam of the outer cover is thick, the elasticity and toughness of the plastic can also make the first interlayer plate 2 or the second interlayer plate 3 bulge slightly without affecting the accuracy of the sewing.
[0057] Among them, the first interlayer plate 2, the second interlayer plate 3 and the auxiliary plate 4 are not only made of plastic, but also all of them are transparent plastic. The first interlayer plate 2, the second interlayer plate 3 and the auxiliary plate 4 in the transparent state can penetrate through their own layer to observe whether the outer coat, inner windproof layer or zipper of the previous layer is placed correctly. If it is not accurate, it can be opened for fine adjustment, making it more convenient and accurate to check before sewing.
[0058] In some embodiments, reference Figure 2 or Figure 3 As shown, the auxiliary plate 4 is larger than the first interlayer plate 2 and the second interlayer plate 3, but smaller than the placement base plate 1, so that the auxiliary plate 4 can completely cover the first interlayer plate 2 and the second interlayer plate 3, while the part exceeding the first interlayer plate 2 and the second interlayer plate 3 can contact the placement base plate 1. Therefore, the placement base plate 1 is also provided with a clamping member 7 for connecting with the auxiliary plate 4. The clamping member 7 can be used to fix the auxiliary plate 4, preventing the auxiliary plate 4 from being lifted during the sewing process, and using the auxiliary plate 4 to press the first interlayer plate 2, the second interlayer plate 3, the inner windproof layer, the zipper and the outer cover.
[0059] Further reference Figure 2As shown, the clamping component 7 may include a pivot shaft 71 and a clamping plate 72; a pivot hole 11 is provided on the base plate 1, and the position of the pivot hole 11 is outside the coverage area of the auxiliary plate 4. The pivot shaft 71 is pivotally connected to the pivot hole 11, so that when the auxiliary plate 4 is opened and closed, the pivot shaft 71 will not be covered by the auxiliary plate 4 and will not contact the auxiliary plate 4. The clamping plate 72 is installed on the pivot shaft 71.
[0060] The clamping plate 72 can rotate along the pivot hole 11 via the pivot shaft 71. During the rotation, the clamping plate 72 rotates to the range of the auxiliary plate 4, thereby preventing the auxiliary plate 4 from being lifted, so as to stabilize the auxiliary plate 4.
[0061] Specifically, after the outer coat, inner windproof layer, and zipper are placed, the auxiliary plate 4 is placed on the second interlayer plate 3. Then, the clamping plate 72 is rotated. The clamping plate 72 rotates along the pivot hole 11 through the pivot shaft 71 to the top surface of the auxiliary plate 4, thereby clamping the auxiliary plate 4 and preventing the clamping plate 72 from being lifted. At the same time, the first interlayer plate 2, the second interlayer plate 3, the zipper, the inner windproof plate, and the outer coat are pressed firmly to further prevent deviations in the sewing points.
[0062] On the other hand, reference Figure 3 As shown, the clamping part 7 may also include a magnetic part 12 and an adsorption part 42. The magnetic part 12 is installed on the placement base plate 1, and the adsorption part 42 is installed on the auxiliary plate 4. The magnetic part 12 may be a permanent magnet, and the adsorption part 42 may be an iron sheet. The magnetic part 12 and the adsorption part 42 are magnetically connected. The auxiliary plate 4 can be adsorbed onto the magnetic part 12 through the adsorption part 42, so that the auxiliary plate 4 is fixed. It can also press the first interlayer plate 2, the second interlayer plate 3, the zipper, the inner windproof plate and the outer cover, and further prevent the seam point from deviating.
[0063] The base plate 1 can be provided with a sliding groove 13. The magnetic part 12 is slidably connected to the sliding groove 13, and the sliding groove 13 provides a limit for the magnetic part 12, so that the magnetic part 12 cannot be detached, but can move along the sliding groove 13. The function of the sliding groove 13 is to move the magnetic part 12 so that the positions of the magnetic part and the adsorption part are staggered, so as to switch whether the desired magnetic effect is applied.
[0064] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.
Claims
1. An auxiliary positioning structure for sewing a zipper on a coat, characterized in that, It includes a base plate (1), a first interlayer plate (2), a second interlayer plate (3), and an auxiliary plate (4); the base plate (1) provides a place for the outer garment, the first interlayer plate (2) is movably connected to the base plate (1), and the first interlayer plate (2) has a first sewing opening (21). After the first interlayer plate (2) covers the outer garment, the inner windproof layer is placed on the first interlayer plate (2) and covers the first sewing opening (21); the second interlayer plate (3) is away from the first interlayer plate (2) from the base plate (1). 1) One side is movably connected, and the second interlayer plate (3) has a second sewing opening (31). After the second interlayer plate (3) covers the inner windproof layer, the zipper is placed on the second interlayer plate (3) and covers the second sewing opening (31); the auxiliary plate (4) is movably connected to the second interlayer plate (3) and has a third sewing opening (41); the external sewing machine passes through the third sewing opening (41), the second sewing opening (31) and the first sewing opening (21) in sequence to sew the zipper, the inner windproof layer and the outer coat together.
2. The auxiliary positioning structure for sewing a zipper on a coat according to claim 1, characterized in that, Both the first interlayer plate (2) and the second interlayer plate (3) are provided with buckle frames (5); the buckle frames (5) are located on one side of the first sewing opening (21) or the second sewing opening (31) and extend toward the first sewing opening (21) or the second sewing opening (31).
3. The auxiliary positioning structure for sewing a zipper on a coat according to claim 2, characterized in that, The first sewing opening (21) and the second sewing opening (31) have a gap opening on their walls, and the two gap openings form a set to form a clamping piece (6); a set of clamping pieces (6) is provided at both ends of the first sewing opening (21) and the second sewing opening (31).
4. The auxiliary positioning structure for sewing a zipper on a coat according to claim 1, characterized in that, Positioning strips (22) are provided on the first sandwich panel (2) and the second sandwich panel (3).
5. The auxiliary positioning structure for sewing a zipper on a coat according to claim 1, characterized in that, The first sandwich panel (2), the second sandwich panel (3) and the auxiliary panel (4) are all made of plastic.
6. The auxiliary positioning structure for sewing a zipper on a coat according to claim 5, characterized in that, The first sandwich panel (2), the second sandwich panel (3) and the auxiliary panel (4) are all made of transparent material.
7. The auxiliary positioning structure for sewing a zipper on a coat according to claim 1, characterized in that, The auxiliary plate (4) is larger than the first sandwich plate (2) and the second sandwich plate (3), but smaller than the placement base plate (1); the placement base plate (1) is also provided with a clamping member (7) for connecting with the auxiliary plate (4).
8. The auxiliary positioning structure for sewing a zipper on a coat according to claim 7, characterized in that, The clamping component (7) includes a pivot shaft (71) and a clamping plate (72); a pivot hole (11) is provided on the placement base plate (1), and the position of the pivot hole (11) is outside the coverage area of the auxiliary plate (4); the pivot shaft (71) is pivotally connected to the pivot hole (11), and the clamping plate (72) is installed on the pivot shaft (71).