A multi-layer composite positioning template for sewing a police uniform fly

Abstract

The present application relates to clothing sewing auxiliary tool technical field, and disclose a kind of multilayer composite positioning template for police uniform door collar sewing, solve the problem proposed in background art, including in the same side edge foldable connection bottom plate, right middle layer plate, left middle layer plate and top plate.The slot structure of bottom plate and top plate is mirror image symmetry, after right front piece cover collar side sewing is completed on the front of template, it can carry out left front piece door collar side sewing after overall overturning.Left middle layer plate is equipped with door collar containing frame enclosed by elastic pressing strip and flexible pressing belt arranged alternately by elastic pressing strip and hard limiting strip, to prevent piece slip.Rope hole is equipped with groove, and elastic rope is embedded after plate body bottom surface is flat, cooperate with antiskid layer to prevent template displacement.Four pieces of plate body are connected by elastic rope, automatically fold closed without external force, convenient to store and manage.The present application can complete the continuous sewing of left and right asymmetric door collar of police uniform, and piece positioning is guaranteed by physical limiting structure, and the consistency of finished product is good.

Description

Technical Field

[0001] This invention belongs to the technical field of garment sewing auxiliary tools, specifically a multi-layer composite positioning template for sewing the placket of a police uniform. Background Technology

[0002] As standard uniforms, police uniforms have strict requirements for the precision of their placket stitching. Police uniform plackets typically employ a double-layer concealed placket structure. The left front panel requires the placket fabric, zipper, and facing to be sewn sequentially, while the right front panel requires the zipper and concealing fabric strip. The sewing techniques on the left and right sides differ, and the zipper teeth must be strictly symmetrical when installed, with the placket edge width remaining consistent.

[0003] Currently, the industry commonly uses single-sided garment templates to assist in sewing. These templates typically have several slots on a base plate; workers lay the cut pieces on the base plate and then cover it with a cover plate for sewing. However, in actual production, existing templates have the following shortcomings:

[0004] First, it is difficult for new employees to get started, the training period is long, and production efficiency is low. The operation of the existing templates depends on the workers' understanding of the template structure and workflow, especially for complex processes such as police uniform plackets that involve multiple layers of fabric pieces and asymmetrical sewing. The laying order, orientation, and alignment with the groove edges of different fabric pieces all have specific requirements, which new employees need a long time to memorize and practice to master, resulting in high scrap rates in the early stages and difficulty in improving assembly line efficiency.

[0005] Secondly, the alignment and placement of the cut pieces rely entirely on the operator's experience and visual judgment, resulting in inconsistent finished product quality. Existing templates mostly use simple laser markings or outline markings for positioning the cut pieces, lacking a physical, mandatory positioning structure. When workers lay out soft fabrics such as facings and plackets, whether the fabric edges are precisely aligned with the markings and whether slippage occurs after placement depends entirely on the operator's skill and sense of responsibility. Even for the same worker, differences in their mental state at different times can lead to quality problems such as fluctuations in placket width and misalignment of zipper teeth, making it difficult to guarantee the consistency of the finished product.

[0006] Third, templates cannot be categorized and stacked after use, requiring searching for them the next time, resulting in low management efficiency. Existing templates are usually single pieces or simple stacked structures, lacking self-closing and fixing functions. When templates of different styles are mixed together, the pieces are easily scratched; the slots and markings on the pieces are obscured after stacking, making it difficult for workers to quickly identify the garment style and process corresponding to the template. The next time they are used, it often requires searching through multiple sets of templates and confirming the pattern, which is time-consuming and affects the efficiency of production scheduling. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides the following technical solution: a multi-layer composite positioning template for sewing police uniform plackets, comprising four panels that can be folded and connected along the same side edge, the four panels being arranged in a sequentially stacked manner as follows:

[0008] The bottom plate has two parallel first through grooves.

[0009] The right middle layer plate has a second through groove.

[0010] The left middle layer plate has two parallel third through slots and a flap receiving frame formed by the right elastic material.

[0011] The top plate has two parallel fourth through slots.

[0012] The slotted structures of the bottom plate and the top plate are mirror images of each other;

[0013] The positioning template has a first usage state and a second usage state. In the first usage state, the bottom plate is located at the bottom as a supporting base plate, the right front piece is placed between the bottom plate and the right middle plate, and the sewing machine needle sews along the second through groove. In the second usage state, the positioning template is flipped over, the top plate is located at the bottom as a supporting base plate, the left front piece is placed between the top plate and the left middle plate, and the sewing machine needle sews along the third through groove.

[0014] Furthermore, the two third through grooves on the left middle layer are respectively the first sub-groove and the second sub-groove. The first sub-groove is used to sew the main body piece and the zipper, and the second sub-groove is used to sew the main body piece and the placket.

[0015] The inner side of the first sub-slot is provided with alternating first elastic pressure strips and first rigid limiting strips; the placket receiving frame is formed by a second elastic pressure strip.

[0016] Furthermore, both the first and second elastic pressure strips are sponge strips or silicone foam strips, and the first rigid limiting strip is an adhesive strip; the height of the first and second elastic pressure strips is the same and is higher than the thickness of the cut piece to be accommodated.

[0017] Furthermore, the left middle layer plate is also provided with a zipper head receiving hole, which is a through hole opened at the top of the first sub-slot and located below the preset neckline; the area on the left middle layer plate located inside the first sub-slot is the zipper laying area, and the first elastic pressure strip is used to align the edge of the zipper tape in the zipper laying area.

[0018] Furthermore, the right middle layer plate is also provided with a flap receiving frame formed by elastic material and a zipper marking line for indicating the placement position of the zipper tape; the size of the flap receiving frame matches the flap fabric piece.

[0019] Furthermore, both the top layer and the left middle layer are provided with a pocket receiving groove; the top layer is also provided with button riveting positioning holes and hook and loop positioning holes.

[0020] Furthermore, the edges of the through grooves on each board are covered with a wear-resistant layer; the bottom board is provided with outline marking lines for positioning the edges of the cut pieces.

[0021] Furthermore, the four panels are foldable and connected by an elastic cord. Each panel has multiple corresponding cord holes at the connecting edge, and the elastic cord passes through each cord hole in sequence, allowing each panel to be folded independently. The elastic cord is in a pre-stretched state when in use. A groove is provided at each cord hole, and the elastic cord is embedded in the groove to keep the bottom surface of the panel flat, thereby reducing the impact on the contact area between the template and the sewing machine table.

[0022] Furthermore, the bottom surfaces of the bottom plate and the top plate are provided with an anti-slip layer to increase the friction between them and the sewing machine table, and to prevent the template from shifting during the sewing process.

[0023] Furthermore, the four plates are fitted with magnetic clasps at the opening and closing edges away from the foldable connection side, and adjacent plates are attracted and positioned by the magnetic clasps when they are in the closed state.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] Through the mirror-symmetric design of the slotted structure of the bottom and top panels, after the right front placket side is sewn on the front of the template, the entire template can be flipped over to sew the left front placket side. One template enables continuous operation of asymmetrical plackets, reducing reference transfer errors and ensuring the symmetry of the left and right plackets and the accuracy of zipper alignment. The placket receiving frame surrounded by elastic strips on the left middle panel, along with the flexible pressing strips that alternate between elastic strips and rigid limiting strips, generates a uniform flexible pressing force on the cut pieces, preventing the soft cut pieces from slipping and wrinkling during sewing. At the same time, the rigid limiting strips provide a rigid positioning reference, ensuring accurate stitching. The recessed groove at the cord hole keeps the elastic cord flat after embedding it into the bottom surface of the back panel. Combined with the anti-slip layer on the bottom of the bottom and top panels, it effectively resists template displacement that may be caused by the pre-tension of the elastic cord. The four panels are connected by elastic cords and automatically close when there is no external force, without the need for additional binding and fixing. After closing, the volume is compact, making it easy to stack or hang for storage, facilitating classification management and quick access. The physical limiting structure composed of the accommodating frames and stop bars of each panel ensures the alignment accuracy of the cut pieces by the template, reducing reliance on the operator's experience and skill, and improving the consistency of the finished products. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0027] Figure 1 This is a top view of the bottom plate structure of the present invention;

[0028] Figure 2 This is a bottom view of the bottom plate structure of the present invention;

[0029] Figure 3 This is a top view of the top plate structure of the present invention;

[0030] Figure 4 This is a schematic diagram of the axial structure of the top plate of the present invention;

[0031] Figure 5 This is a top view of the right middle layer plate structure of the present invention;

[0032] Figure 6 This is a schematic diagram of the right middle layer plate axial side structure of the present invention;

[0033] Figure 7 This is a top view of the left central layer structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the assembly structure of the bottom plate and the right middle plate of the present invention.

[0035] In the diagram: 1. Bottom layer; 11. First through groove; 12. Outline marking line; 2. Right middle layer; 21. Second through groove; 22. Front flap receiving frame; 23. Zipper marking line; 3. Left middle layer; 31. Third through groove; 311. First sub-groove; 312. Second sub-groove; 32. Front flap receiving frame; 321. Second elastic strip; 33. First elastic strip; 34. First rigid limiting strip; 35. Zipper head receiving hole; 36. Zipper area; 4. Top layer; 41. Fourth through groove; 42. Inner pocket receiving groove; 43. Button riveting positioning hole; 44. Hook and loop fastener positioning hole; 5. Wear-resistant layer; 6. Elastic cord; 7. Cord hole; 71. Sink; 8. Magnetic attachment; 9. Anti-slip layer. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] like Figure 1-8 As shown, the multi-layer composite positioning template for sewing the placket of the police uniform in this embodiment includes four panels that can be folded and connected on the same side edge. The four panels are arranged in sequence as follows:

[0038] The bottom plate 1 has two parallel first through grooves 11.

[0039] The right middle layer plate 2 has a second through groove 21.

[0040] The left middle layer plate 3 has two parallel third through grooves 31 and a right elastic material forming a placket receiving frame 32.

[0041] Top plate 4, with two parallel fourth through slots 41.

[0042] The slotted structures of the bottom plate 1 and the top plate 4 are mirror-symmetrical;

[0043] The positioning template has a first usage state and a second usage state. In the first usage state, the bottom plate 1 is located at the bottom as a supporting base plate, the right front piece is placed between the bottom plate 1 and the right middle plate 2, and the sewing machine needle sews along the second through groove 21. In the second usage state, the positioning template is flipped over, the top plate 4 is located at the bottom as a supporting base plate, the left front piece is placed between the top plate 4 and the left middle plate 3, and the sewing machine needle sews along the third through groove 31.

[0044] The two third through grooves 31 on the left middle layer board 3 are the first sub-groove 311 and the second sub-groove 312, respectively. The first sub-groove 311 is used to sew the main body piece and the zipper, and the second sub-groove 312 is used to sew the main body piece and the placket.

[0045] The inner side of the first sub-groove 311 is provided with alternating first elastic pressure strips 33 and first rigid limiting strips 34; the placket receiving frame 32 is enclosed by the second elastic pressure strip 321.

[0046] The first elastic pressure strip 33 and the second elastic pressure strip 321 are both sponge strips or silicone foam strips, and the first rigid limiting strip 34 is an adhesive strip; the first elastic pressure strip 33 and the second elastic pressure strip 321 have the same height and are higher than the thickness of the cut piece to be accommodated.

[0047] The left middle layer plate 3 is also provided with a zipper head receiving hole 35. The zipper head receiving hole 35 is a through hole opened at the top of the first sub-groove 311, which is located below the preset neckline. The area on the left middle layer plate 3 located inside the first sub-groove 311 is the zipper laying area 36. The first elastic pressure strip 33 is used to align the edge of the zipper tape in the zipper laying area 36.

[0048] The right middle layer 2 is also provided with a flap receiving frame 22 formed by elastic material and a zipper marking line 23 for indicating the placement position of the zipper tape; the size of the flap receiving frame 22 matches the flap fabric piece.

[0049] Both the top layer plate 4 and the left middle layer plate 3 are provided with inner pocket receiving grooves 42; the top layer plate 4 is also provided with button riveting positioning holes 43 and hook and loop positioning holes 44.

[0050] The edges of the through grooves on each board are covered with a wear-resistant layer 5; the bottom board 1 is provided with outline marking lines 12 for positioning the edges of the cut pieces.

[0051] The four panels are foldable and connected by an elastic cord 6. Each panel has multiple corresponding cord holes 7 at the connecting edge. The elastic cord 6 passes through each cord hole 7 in sequence, allowing each panel to be folded independently. The elastic cord 6 is in a pre-stretched state when in the threaded state. A groove 71 is provided at the cord hole 7, and the elastic cord 6 is embedded in the groove 71 to keep the bottom surface of the panel flat, thereby reducing the impact on the contact area between the template and the sewing machine table.

[0052] The bottom surfaces of the bottom plate 1 and the top plate 4 are provided with an anti-slip layer 9 to increase the friction between them and the sewing machine table and prevent the template from shifting during sewing.

[0053] The four plates are fitted with magnetic 8 at the opening and closing edges away from the foldable connection side. When two adjacent plates are in the closed state, they are attracted and positioned by the magnetic 8.

[0054] Working principle:

[0055] In the first usage state (sewing the right front panel flap side), place the template flat on the sewing machine table with the bottom plate 1 at the bottom. Place the right front panel body piece with the reverse side facing up, and lay it flat according to the outline marking line 12 on the bottom plate 1. Fold the right middle plate 2 over the right front panel piece. At this time, the right front panel piece is sandwiched between the bottom plate 1 and the right middle plate 2. On the right middle plate 2, place the zipper tape according to the zipper marking line 23. Place the flap piece into the flap receiving frame 22. The flap receiving frame 22 is surrounded by elastic material, and its size matches the flap piece, thus physically limiting the flap piece. The sewing machine needle sews along the second through groove 21, completing the sewing of the right front panel body, zipper, and flap in one go. During the sewing process, the anti-slip layer 9 on the bottom surface of the bottom plate 1 increases the friction with the table surface, and the magnetic suction part 8 attracts to prevent the plate from loosening.

[0056] Second usage state (sewing the left front placket side): After the right front piece is sewn, flip the positioning template over so that the top layer board 4 is at the bottom as a new supporting base. Lay the left front piece with the reverse side facing up, referring to the outline markings on the top layer board 4, and fold the left middle layer board 3 over it to cover the left front piece. At this time, the left front piece is sandwiched between the top layer board 4 and the left middle layer board 3. After the left front piece is laid out, place the placket fabric into the placket receiving frame 32 formed by the second elastic strip 321. Lay the zipper tape in the zipper area 36, ​​with the edge of the zipper tape aligned with the first elastic strip 33. The zipper head receiving hole 35 is inserted and fixed in place. The zipper head receiving hole 35 is located at the top of the first sub-groove 311 and below the preset neckline. The facing fabric is covered on the zipper tape. The inner edge of the facing fabric is inserted under the flexible pressing band formed by the alternating arrangement of the first elastic pressing strip 33 and the first rigid limiting strip 34. The first elastic pressing strip 33 and the second elastic pressing strip 321 are at the same height and slightly higher than the thickness of the cut piece to be accommodated. When the left middle layer plate 3 is folded closed, the elastic pressing strip is compressed, generating a uniform flexible pressing force on the placket fabric, facing fabric, and other soft cut pieces to prevent them from slipping and wrinkling. The first rigid limiting strip 34 also provides a rigid limiting reference. The sewing machine needle first sews the body and placket along the second sub-groove 312, and then sews the body, zipper, and facing fabric along the first sub-groove 311. At the same time, the lining pocket is sewn by the lining pocket receiving groove 42 opened on the top layer plate 4 and the left middle layer plate 3.

[0057] After sewing, fix the top layer panel 4. After sewing, fold the top layer panel 4 over and rivet the four-in-one fasteners through the button rivet positioning holes 43 on the top layer panel 4. Then, attach the Velcro through the hook and loop fastener positioning holes 44. Finally, open all the panels, take out the sewn garment pieces, and connect the left and right halves with the zipper.

[0058] After use, release each panel. Under the pre-tension of the elastic rope 6, the four panels automatically fold and close into a stacked state. The magnetic suction component 8 assists in the attraction and fixation. The elastic rope 6 is embedded in the groove 71 at the rope hole 7, keeping the bottom surface of the panels flat. The folded template is compact and can be stacked or hung for storage. The wear-resistant layer 5 covering the edges of each through groove reduces wear during frequent use and extends the template's lifespan.

[0059] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-layer composite positioning template for sewing the placket of a police uniform, characterized in that, It includes four panels that can be folded and connected on the same side edge, and the four panels are stacked in sequence as follows: The bottom plate (1) has two parallel first through grooves (11) on it. The right middle layer plate (2) has a second through groove (21) on it. The left middle layer plate (3) has two parallel third through grooves (31) and a right elastic material forming a placket receiving frame (32). The top plate (4) has two parallel fourth through slots (41). The slotted structure of the bottom plate (1) and the top plate (4) is mirror symmetrical; The positioning template has a first usage state and a second usage state. In the first usage state, the bottom plate (1) is located at the bottom as a supporting bottom plate, the right front piece is placed between the bottom plate (1) and the right middle plate (2), and the sewing machine needle sews along the second through groove (21). In the second usage state, the positioning template is flipped over as a whole, the top plate (4) is located at the bottom as a supporting bottom plate, the left front piece is placed between the top plate (4) and the left middle plate (3), and the sewing machine needle sews along the third through groove (31).

2. The multi-layer composite positioning template for sewing police uniform plackets according to claim 1, characterized in that: The two third through grooves (31) on the left middle layer board (3) are the first sub-groove (311) and the second sub-groove (312), respectively. The first sub-groove (311) is used to sew the main body piece and the zipper, and the second sub-groove (312) is used to sew the main body piece and the placket. The inner side of the first sub-groove (311) is provided with alternating first elastic pressure strips (33) and first rigid limiting strips (34); the placket receiving frame (32) is formed by the second elastic pressure strip (321).

3. A multi-layer composite positioning template for sewing police uniform plackets according to claim 2, characterized in that: The first elastic pressure strip (33) and the second elastic pressure strip (321) are both sponge strips or silicone foam strips, and the first rigid limiting strip (34) is a rubber strip; the height of the first elastic pressure strip (33) and the second elastic pressure strip (321) are the same and higher than the thickness of the cut piece to be accommodated.

4. A multi-layer composite positioning template for sewing police uniform plackets according to claim 2, characterized in that: The left middle layer plate (3) is also provided with a zipper head receiving hole (35). The zipper head receiving hole (35) is a through hole opened at the top of the first sub-groove (311) and is located below the preset neckline. The area on the left middle layer plate (3) located inside the first sub-groove (311) is the zipper laying area (36). The first elastic pressure strip (33) is used to align the edge of the zipper tape of the zipper laying area (36).

5. A multi-layer composite positioning template for sewing police uniform plackets according to claim 1, characterized in that: The right middle layer plate (2) is also provided with a flap receiving frame (22) formed by elastic material and a zipper marking line (23) for indicating the placement position of the zipper tape; the size of the flap receiving frame (22) matches the flap fabric piece.

6. A multi-layer composite positioning template for sewing police uniform plackets according to claim 1, characterized in that: Both the top plate (4) and the left middle plate (3) are provided with pocket receiving grooves (42); the top plate (4) is also provided with button riveting positioning holes (43) and hook and loop positioning holes (44).

7. A multi-layer composite positioning template for sewing police uniform plackets according to claim 1, characterized in that: The edges of the through grooves on each board are covered with a wear-resistant layer (5); the bottom board (1) is provided with outline marking lines (12) for positioning the edges of the cut pieces.

8. A multi-layer composite positioning template for sewing police uniform plackets according to claim 1, characterized in that: The four panels are foldable and connected by an elastic rope (6). Each panel has multiple corresponding rope holes (7) at the connecting edge. The elastic rope (6) passes through each rope hole (7) in sequence, so that each panel can be folded independently. The elastic rope (6) is in a pre-stretched state when it is in the wearing state. A groove (71) is provided at the rope hole (7). The elastic rope (6) is embedded in the groove (71) to keep the bottom surface of the panel flat, so as to reduce the impact on the contact area between the template and the sewing machine table.

9. A multi-layer composite positioning template for sewing police uniform plackets according to claim 8, characterized in that: The bottom surface of the bottom plate (1) and the top plate (4) is provided with an anti-slip layer (9) to increase the friction between the bottom plate (1) and the sewing machine table and prevent the template from shifting during sewing.

10. A multi-layer composite positioning template for sewing police uniform plackets according to claim 1, characterized in that: The four plates are fitted with magnetic elements (8) at the opening and closing edges away from the foldable connection side. When two adjacent plates are in the closed state, they are attracted and positioned by the magnetic elements (8).

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