A sleeve corner fork sewing template and a sleeve corner fork production method

Abstract

The present application relates to clothing technology field, disclose a kind of sleeve mouth round corner fork sewing template, including sequentially superimposed bottom plate, core plate and top plate, bottom plate, core plate and top plate are provided with each other through press seam cutting groove, press seam cutting groove includes in-plate communication sewing needle groove and round corner cutting groove, sewing needle groove includes two straight needle grooves, round corner fork needle groove is in-plate communication between straight needle groove.The bottom plate, core plate of the sleeve mouth round corner fork sewing template are used to fix sleeve piece, core plate and top plate are used to fix sleeve piping in superimposed position with sleeve piece seam portion alignment, press seam sleeve piece and sleeve piping in mould plate, then cut off excess seam portion cloth at round corner fork, finally separate press seam piece and mould, the production process in above-mentioned press seam and cutting precision, it is beneficial to improve the sewing production efficiency of sleeve mouth round corner fork.The present application also discloses a kind of production method of sleeve mouth round corner fork.

Description

Technical Field

[0001] This invention relates to the field of garment manufacturing technology, specifically to a cuff rounded corner slit sewing template and a method for producing cuff rounded corner slits. Background Technology

[0002] Rounded cuffs are commonly found on short-sleeved garments such as shirts and formal jackets. Their production process includes cutting, folding, marking the fabric pieces, pressing, trimming, and pressing. Specifically: cut the sleeve pieces and cuff facings; create a pressed fold along one long side of the cuff facing; align and fold the seam allowances of the sleeve pieces and cuff facings; mark the pressing lines on the seam allowances with a marker; the pressing lines include a straight segment around the cuff and a curved segment smoothly connecting to the straight segment, with the central angle of the curved segment being approximately 90°; the two curved segments intersect to form a V-shape located in the middle of the aligned seam allowances; press the sleeve pieces and cuff facings along the marked lines; spread the rounded corners at the curved lines with your fingers, flatten the front sides of the sleeve pieces and cuff facings on both sides of the straight line stitches, hiding the pressing edges of the pressed pieces within the folded structure of the sleeve pieces and cuff facings; and then press the folded structure.

[0003] The drawbacks of the above production method are as follows: different operators apply varying degrees of force with their fingers, resulting in inconsistent tension in the seam at the rounded corners. This leads to inconsistent curvature of the rounded corners after ironing, especially between the two rounded corners of the same cuff. Furthermore, the ironing folds formed by turning the sleeve pieces over need to cover the ironing folds of the cuff facing. All these defects contribute to reduced product quality consistency. In actual production, operators typically compare and adjust after the first ironing, making the production time for a single sewn piece quite long. Summary of the Invention

[0004] One of the objectives of this invention is to overcome the deficiencies in the prior art and provide a cuff rounded corner slit sewing template to reduce the influence of human factors on the smooth shape of the rounded corner slit, improve the quality of the pocket opening of clothing products, the consistency of batch products, and the production efficiency of the cuff rounded corner slit.

[0005] To achieve the above-mentioned technical effects, the technical solution of the present invention is as follows: a cuff rounded corner slit sewing template, comprising a base plate, a core plate and a top plate stacked sequentially, wherein the base plate, the core plate and the top plate are all provided with mutually penetrating seam cutting grooves, wherein the seam cutting grooves include sewing needle grooves and rounded corner cutting grooves that are connected within the plate, wherein the sewing needle grooves include two straight needle grooves and rounded corner slit needle grooves that are connected within the plate between the straight needle grooves.

[0006] A preferred technical solution is that the base plate includes a positioning base plate portion and a flipping base plate portion that are spliced ​​together in the same layer and rotatably connected at the splicing surface, the splicing surface extending along the length direction of the seam cutting groove and dividing the seam cutting groove; the core plate includes a positioning core plate portion and a flipping core plate portion that are separately arranged in the same layer, the positioning core plate portion and the positioning base plate portion being removable and overlapping each other, and the flipping core plate portion and the flipping base plate portion being removable and overlapping each other; The positioning base plate and / or the flipping base plate are symmetrically provided with an inner extension push-fold channel and a corner push-fold member that moves along the push-fold channel. The corner push-fold member has a straight side and a rounded side that push against and connect with the sleeve piece.

[0007] A preferred technical solution is that a rotating shaft extending along the thickness direction is provided in the push-folding channel, the corner push-folding component is connected to the rotating shaft and rotates around the rotating shaft, and the corner push-folding component has at least one clearance station located on the side of the seam cutting groove.

[0008] A preferred technical solution is that an edge-fitting folding pressure plate is rotatably connected at the splicing surface of the positioning core plate and the flipping core plate. The edge-fitting folding pressure plate is disposed on both sides of the length direction of the seam cutting groove. The edge-fitting folding pressure plate is configured to press the two ends of the edge folded along the seam line against the positioning core plate.

[0009] A preferred technical solution is that the positioning core plate is removably provided with a folded edge positioning plate, and the folded edge positioning plate has a folded edge positioning side that pushes against the edge.

[0010] A preferred technical solution is that the top plate has a protruding third plate surface facing the core plate with a pressing and positioning member, and the pressing and positioning member is respectively disposed on both sides of the rounded corner fork groove; The base plate has a sleeve anti-slip strip on its surface facing the core plate. The flipped core plate has a needle groove extension that extends through it. The needle groove extension is internally connected to the sewing needle groove on the side away from the rounded corner cutting groove. The pressing and positioning member has a pressing station. The orthographic projection of the pressing and positioning member along the plate thickness direction is located within the orthographic projection of the needle groove extension along the plate thickness direction.

[0011] A preferred technical solution is that the positioning core plate and the top plate have a stacking station, and the orthographic projection of the positioning core plate along the thickness direction of the stacking station is located within the orthographic projection of the top plate along the thickness direction. The positioning core plate and the positioning bottom plate are rotatably connected around a first axis, and the top plate and the positioning core plate are rotatably connected around a second axis. The orthographic projections of the first axis and the second axis along the thickness direction are spaced apart from each other, and the extended section of the second axis intersects the orthographic projection of the first axis along the thickness direction.

[0012] A preferred technical solution is that the edge-fitting folding pressure plate includes an integrally connected edge-fitting pressing part and a sleeve pressing part, wherein the sleeve pressing part is configured to press the overlapping structure of the edge-fitting and the cut piece folded along the end of the seam line against the positioning core plate part.

[0013] A preferred technical solution is that the corner-folding component has a switchable avoidance station and a top corner station. The orthographic projection of the straight side and the arc side of the top corner station along the thickness direction is a first straight line and a first arc connected to each other. The end of the first straight line away from the first arc is located within the orthographic projection of the sleeve pressing part along the thickness direction.

[0014] The second objective of this invention is to provide a method for producing a cuff rounded corner slit, based on the aforementioned cuff rounded corner slit sewing template, comprising the following steps: S1: Press the sleeve piece onto the base plate and the seam cutting groove of the base plate, and then press the core plate onto the sleeve piece. S2: Press the cuff facing over the core board and the core board seam cutting groove, align the cuff facing with the seam allowance of the sleeve piece, and then press the top plate over the cuff facing. S3: The combination of sleeve piece, cuff facing, and cuff rounded corner slit sewing template obtained in S2 is introduced into the pressing device, and the sleeve piece and cuff facing are pressed along the sewing needle groove; S4: The combination of sleeve piece, cuff facing, and cuff rounded corner slit sewing template obtained in S3 is introduced into the cutting device, and excess seam allowance fabric opposite to the rounded corner slit seam line is cut off along the rounded corner cutting groove.

[0015] The advantages and beneficial effects of this invention are as follows: The base plate and core plate of this cuff rounded fork sewing template are used to fix the sleeve pieces, while the core plate and top plate are used to fix the cuff facing to the overlapping position aligned with the seam allowance of the sleeve pieces. The sleeve pieces and cuff facing are then pressed into the template, and then the excess seam allowance fabric directly opposite the rounded fork press-in line is cut off. Finally, the press-in piece and template are separated. The press-in and cutting positions in the above production process are precise, which helps to improve the sewing quality of the cuff rounded fork. The template-based production steps are simple and the production efficiency is higher. Cut off excess fabric that is directly opposite the rounded corner slit seam. This helps to flatten the rounded corners created by turning the rounded corner slit seam out and keep them smooth, thus preventing defects such as arching of the rounded corners and easy deformation after washing. Attached Figure Description

[0016] Figure 1 This is a front view of the base plate in an embodiment of a cuff rounded corner slit sewing template; Figure 2 This is a front view of the core board of a cuff rounded corner slit sewing template according to an embodiment; Figure 3This is a front view of the top plate in an embodiment of a cuff rounded corner slit sewing template; Figure 4 This is a front view of the base plate in another embodiment of the cuff rounded corner slit sewing template; Figure 5 yes Figure 4 Rear view; Figure 6 This is a front view of the core board of the cuff rounded corner fork sewing template in another embodiment; Figure 7 This is a front view of the top plate in another embodiment of the cuff rounded corner slit sewing template; Figure 8 This is a front view of the assembly structure of the base plate and sleeve pieces in another embodiment; Figure 9 This is a front view of the assembly structure of the base plate, sleeve pieces, core plate, and cuff facing in another embodiment; Figure 10 This is a schematic diagram of the structure of the cuff rounded corner folding piece in the avoidance position in another embodiment of the cuff rounded corner folding sewing template; Figure 11 This is a schematic diagram of the structure of the cuff rounded corner folding piece in the top corner position of the sewing template in another embodiment; Figure 12 This is a schematic diagram of the structure of the cuff rounded corner folding piece in the top corner position of the sewing template in two other embodiments; Figure 13 This is a flowchart of the production process for the rounded corner slits on the cuffs; In the diagram: 1. Base plate; 11. Positioning base plate section; 12. Flip-up base plate section; 13. Folding channel; 14. Folding corner piece; 141. Flat side; 142. Rounded side; 15. Anti-slip strip on sleeve. 2. Core board; 21. Positioning core board section; 22. Flipping core board section; 23. Edge folding pressure plate; 231. Edge pressing section; 232. Sleeve pressing section; 24. Folding positioning plate; 3. Top plate; 31. Pressing positioning component; a) Seam cutting groove; a1) Rounded corner cutting groove; a2) Straight needle groove; a3) Rounded corner cross needle groove; a4) Needle groove extension; b. Sleeve piece; b1. Sleeve seam allowance; b2. Sleeve body; c. Cuff facing; c1. Facing seam allowance; c2. Facing body. Detailed Implementation

[0017] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0018] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating orientation or positional relationship are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0019] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrally formed connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances. Example

[0020] like Figure 1-3 As shown, the cuff rounded corner slit sewing template of the embodiment includes a base plate 1, a core plate 2 and a top plate 3 stacked in sequence. The base plate 1, the core plate 2 and the top plate 3 are all provided with mutually penetrating seam cutting grooves a. The seam cutting grooves a include sewing needle grooves and rounded corner cutting grooves a1 that are connected inside the plate. The sewing needle grooves include two straight needle grooves a2 and rounded corner slit needle grooves a3 that are connected inside the plate between the straight needle grooves a2.

[0021] The removable, overlapping base plate 1, core plate 2, and top plate 3 can be separated or connected by a hinge structure. The hinge structure can be selected as adhesive tape that bonds to adjacent plates, or hinges that connect to two adjacent plates separately. Figure 1-4 The shaded area represents the hinges between the different layers of the template.

[0022] The function of the sewing needle groove is to guide the sewing needle in the sewing equipment to produce a predetermined stitch. Sewing equipment includes, but is not limited to, template sewing machines. The function of the rounded corner cutting groove a1 is to guide the movement of a cutter or laser with a predetermined cutting path. The straight needle groove a2 corresponds to the production of the straight topstitching thread for the cuff, and the rounded corner cross needle groove a3 corresponds to the production of an approximately V-shaped rounded corner cross topstitching thread connecting two straight topstitching threads and intersecting at rounded corners. The rounded corner cross needle groove a3 includes two intersecting and relatively protruding arc-shaped needle grooves within the plate; correspondingly, the rounded corner cross topstitching thread includes two intersecting and relatively protruding arc-shaped topstitching threads.

[0023] Internal connectivity refers to connectivity within the plane of the plate, that is, the bottom plate 1, the core plate 2 and the top plate 3 are all provided with sewing needle grooves and rounded corner cutting grooves a1, and the sewing needle grooves and rounded corner cutting grooves a1 within the plane of any one of the bottom plate 1, the core plate 2 and the top plate 3 are interconnected.

[0024] like Figure 13As shown, based on the embodiment of the cuff rounded corner slit sewing template, the production method of the cuff rounded corner slit includes the following steps: S1: Press the sleeve piece b onto the base plate 1 and the seam cutting groove a of the base plate 1, and then press the core plate 2 onto the sleeve piece b. S2: Press the cuff facing c onto the core board 2 and the core board 2 seam cutting groove a, align the cuff facing c with the seam allowance of the sleeve piece b, and then press the top plate 3 onto the cuff facing c. S3: The combination of sleeve piece b, cuff facing c, and cuff rounded fork sewing template obtained in S2 is introduced into the pressing device; starting from a straight needle groove a2 along the sewing needle groove, passing through the rounded fork needle groove a3 to the other straight needle groove a2, pressing the sleeve piece b and cuff facing c to obtain pressing stitches with straight segments, arc segments, arc segments, and straight segments connected in sequence; S4: Import the combination of sleeve piece b, cuff facing c, and cuff rounded corner slit sewing template obtained in S3 into the cutting device; starting from the connection point of a straight line segment and an arc segment, passing through the intersection of two arc segments to the connection point of another straight line segment and an arc segment, cut the excess facing seam allowance c1 and b1 opposite the rounded corner slit seam line along the rounded corner cutting groove a1 to obtain a seam allowance cut that is approximately V-shaped.

[0025] like Figure 4-6 As shown, in another preferred embodiment, the base plate 1 includes a positioning base plate portion 11 and a flipping base plate portion 12 that are spliced ​​together in the same layer and rotatably connected at the splicing surface. The splicing surface extends along the length direction of the seam cutting groove a and divides the seam cutting groove a. The core plate 2 includes a positioning core plate portion 21 and a flipping core plate portion 22 that are separately arranged in the same layer. The positioning core plate portion 21 and the positioning base plate portion 11 can be removed and overlapped directly opposite each other. The flipping core plate portion 22 and the flipping base plate portion 12 can be removed and overlapped directly opposite each other. The positioning base plate 11 and / or the flipping base plate 12 are symmetrically provided with an inner extension push-fold channel 13 and a corner push-fold member 14 that moves along the push-fold channel 13. The corner push-fold member 14 has a straight side 141 and a rounded side 142 that push against and connect with the sleeve piece b.

[0026] The positioning core plate part 21 and the positioning base plate part 11 can be set separately or rotatedly connected. The positioning core plate part 21 has a stacking station and a flipping station that can be switched with the positioning base plate part 11.

[0027] The positioning base plate 11 and the flipping base plate 12 are spliced ​​together on the same layer, indicating that both the positioning base plate 11 and the flipping base plate 12 are located in the same template layer and are spliced ​​to form the seam cutting groove a. The positioning base plate 11 and the flipping base plate 12 are connected to each other. Compared with a separate arrangement, the rotating connection can ensure the accurate position of the flipping base plate 12 before and after flipping, reduce its displacement relative to the sleeve piece b and the cuff facing c before and after flipping, and thus ensure the accurate position of the corner folding piece 14 pushing against the sleeve piece.

[0028] The positioning core plate 21 and the flipping core plate 22 are separately provided. The flipping core plate 22 is folded along with the flipping base plate 12, and the originally flat sleeve piece b and cuff facing c are folded around the bottom edge where the splicing surface intersects with the base plate 1 to below the positioning core plate 21 and the positioning base plate 11. The layered structure is positioning core plate 21, positioning base plate 11, flipping base plate 12, and flipping core plate 22. Furthermore, the flipping core plate 22 and the flipping base plate 12 are provided with magnetically attracted parts and / or with concave-convex connecting parts to ensure that the flipping core plate 22 maintains a fixed relative overlapping position during the folding process with the flipping base plate 12.

[0029] The corner folding piece 14 of the positioning base plate 11 and / or the flipping base plate 12 folds the sleeve piece b, ensuring that the rounded edge of the sleeve piece b turned out by the corner folding piece 14 is flat and taut until it completely covers the rounded edge of the cuff facing c turned out. The rounded corner on the outer layer of the garment is close to the rounded outline of the corner folding piece 14, which helps to improve the shape of the cuff rounded corner and the consistency of batch product quality.

[0030] Figure 8 , 9 The dotted line represents the topstitching line. The sleeve seam allowance b1 and the main body b2 of sleeve piece b are located on both sides of the topstitching line, and the facing seam allowance c1 and the facing body c2 of cuff facing c are located on both sides of the topstitching line. After S4 of the above embodiment is completed, the sleeve seam allowance b1 is sandwiched between the positioning base plate 11 and the positioning core plate 21, and the sleeve main body b2 is sandwiched between the flipping base plate 12 and the flipping core plate 22; the facing seam allowance c1 is sandwiched between the positioning core plate 21 and the top plate 3, and the facing body c2 is sandwiched between the flipping core plate 22 and the top plate 3.

[0031] like Figure 13 As shown, the production method of the rounded corner cuffs also includes the following steps: S5: Fold down the core plate 22, sleeve body b2 and bottom plate 12 to the bottom of the positioning bottom plate 11, and fold the sleeve body b2 to the bottom of the sleeve seam allowance b1 and the facing seam allowance c1. S6: Open the top panel 3. At this time, the cuff edge c is located on the surface. S7: Fold the main body c2 corresponding to the straight section of the topstitching line at the end of the cuff facing on one side to the top of its facing seam allowance c1. At this time, the sleeve seam allowance b1 and the facing seam allowance c1 corresponding to the straight section of the topstitching line are sandwiched between the sleeve body b2 and the facing body c2, and the rounded fork is still in the topstitching state without being turned out. S8: Push the corner push piece 14 flat along the inside of the push-fold channel 13 to push out the rounded corner of the sleeve piece b. At this time, the edge seam allowances c1 and b1 corresponding to the single-sided arc seam are flatly sandwiched between the sleeve piece body b2 and the edge body c2.

[0032] After S7, you can choose to directly press the fabric layer structure after one side of the rounded corner is turned out, or repeat S7 and S8 to continue the step of turning out the rounded corner on the other side. After both rounded corners are turned out, press them together.

[0033] It is understandable that the order of S5-S7 can be changed to S6, S7, S5, that is, first open the top plate 3, then fold the edge body c2 corresponding to the straight section of the seam line at the end of the cuff edge c to the top of its edge seam c1, and finally fold down and flip the core plate 22, the sleeve body b2 and the bottom plate 12.

[0034] After the rounded corners are turned out, the pressing can be done manually or automatically using a template machine.

[0035] Preferably, the base plate 1, core plate 2, template forming the folding channel 13, and corner folding component 14 that are pressed together with the sleeve piece b and cuff edge c are all made of materials resistant to pressing temperatures, including but not limited to plastic materials. To prevent the sleeve piece b from becoming too tight when folded, the thick side of the first plate is set as a smooth surface to reduce friction, including but not limited to attaching a fluoroplastic layer such as polytetrafluoroethylene, or grinding the edges of the thick side of the first plate to a smooth transition with the plate surface, or the entire corner folding component 14 is made of fluoroplastic material such as polytetrafluoroethylene.

[0036] Taking advantage of the fabric's softness, the folding process in steps S5 and S7 fixes the top-to-bottom layered structure of the facing body c2, facing seam allowance c1, sleeve seam allowance b1, and sleeve body b2. After rounding the corners, the folded structure is transformed into the rounded corner cuff workpiece required for subsequent production.

[0037] like Figure 5 As shown, in another preferred embodiment, a rotating shaft 15 extending along the thickness direction is provided in the push-fold channel 13, and the corner push-fold member 14 is connected to the rotating shaft and rotates around the rotating shaft 15. The corner push-fold member 14 has at least one clearance station located on the side of the seam cutting groove a.

[0038] A necessary clearance is provided between the folding corner piece 14 and the folding channel 13. Since the straight section of the topstitching line of the rounded corner cuff is much longer than the arc topstitching line, the clearance can easily cause the first plate thickness sides on both sides of the rounded corner cuff to deviate from the same straight line. The rotatable folding corner piece 14 can optionally be provided with a smaller clearance to improve the overall straightness of the cuff.

[0039] like Figure 6 , 10 As shown in -12, in another preferred embodiment, a folding edge plate 23 is rotatably connected at the splicing surface of the positioning core plate 21 and the flipping core plate 22. The folding edge plate 23 is disposed on both sides of the length direction of the seam cutting groove a. The folding edge plate 23 is configured to press the two ends of the folded edge along the seam line against the positioning core plate 21.

[0040] The function of the edge-folding pressure plate 23 is to assist in folding the edge-fitting body c2 corresponding to the straight section of the seam line at the end of the edge-fitting c on one side of the cuff, and to maintain the folded state of the edge-fitting body c2 after folding. Furthermore, the opposing pressure surfaces of the edge-folding pressure plate 23 are provided with magnetic elements and / or a convex-concave mating structure. Further, the opposing pressure surfaces are rough surfaces to increase friction, including but not limited to sandpaper. After the first side of the edge-fitting body c2 opposite to the seam line is folded at the end away from the rounded corner fork, the folded segment of the first side away from the rounded corner fork remains straight. Due to the pull of the seam line at the rounded corner fork, the three-dimensional curved first side segment between the folded segment and the seam line at the rounded corner fork is prone to deformation of the end folded area. Therefore, when using the corner-folding method, the operator needs to press the edge-folding pressure plate 23 firmly to prevent relative displacement between the edge-fitting body c2 and the edge-fitting seam allowance c1, further improving the overall straightness of the cuff.

[0041] like Figure 6 As shown, in another preferred embodiment, the positioning core plate portion 21 is removably provided with a folded edge positioning plate 24, which has a folded edge positioning side that abuts against the edge.

[0042] The function of the folding edge positioning side is to determine the folding edge position of the straight segment at the end of the cuff facing on one side, avoiding errors caused by manual mold operation. Specifically, the folding edge position is preferably on the same plane as the seam line, and the thickness of the folding edge positioning plate 24 is controlled to be as small as possible. Optionally, the folding edge positioning plate 24 is rotatably connected to the positioning core plate 21.

[0043] like Figure 7 , 10As shown in -12, in another preferred embodiment, the top plate 3 has a protruding third plate surface facing the core plate 2 with a pressing and positioning member 31, which is distributed on both sides of the rounded corner needle groove a3; the bottom plate 1 has a sleeve anti-slip strip on the surface facing the core plate 2; the flipped core plate part 22 has a needle groove extension part a4 that is provided through it; the needle groove extension part a4 is connected to the side of the sewing needle groove away from the rounded corner cutting groove a1; the pressing and positioning member 31 has a pressing station; the orthographic projection of the pressing and positioning member 31 along the plate thickness direction is located within the orthographic projection of the needle groove extension part a4 along the plate thickness direction.

[0044] The needle groove extension a4 is connected to the seam cutting groove a, and also penetrates the flipped core plate part 22.

[0045] In a standard template, the sides of the seam cutting groove a are equidistantly spaced based on the shape of the seam line. However, at the rounded corner needle groove a3, if the sides of the rounded corner needle groove a3 are set to be arc-shaped, when the flipped core plate 22 and the flipped bottom half are folded downwards simultaneously, the arc-shaped sides will rub against the edge above them, increasing the probability of the edge shifting in the template. After setting the needle groove extension, to avoid the above-mentioned rubbing problem, the pressing and positioning part 31 of the top plate 3 is used to press and fix the cuff edge c during the nailing and cutting process.

[0046] like Figure 11 , 12 As shown, in another preferred embodiment, the positioning core plate portion 21 and the top plate 3 have a stacking station; the positioning core plate portion 21 and the positioning bottom plate portion 22 are rotatably connected around a first axis, and the top plate 3 and the positioning core plate portion 21 are rotatably connected around a second axis. The orthographic projections of the first axis and the second axis along the plate thickness direction are spaced apart from each other, and the extension of the second axis intersects the orthographic projection of the first axis along the plate thickness direction.

[0047] The first and second axes are the axes around which the hinge structure rotates.

[0048] Figure 10-12 When using the corner-folding push-folding piece 14, the top plate 3 is flipped to the side of the positioning core plate 21. This not only releases the pressure of the positioning piece 31 on the edge-fitting piece, but also reduces the weight of the template pressing on the top of the seam presser, thereby reducing the friction between the seam presser and the templates above and below it, and preventing the fabric from being too tense and deformed after the rounded corner is turned out.

[0049] like Figure 12 As shown, in another preferred embodiment, the edge-folding pressure plate 23 includes an integrally connected edge-covering portion 231 and a sleeve-covering portion 232. The sleeve-covering portion 232 is configured to press the overlapping structure of the edge-covering and sleeve piece b obtained by folding along the end of the seam against the positioning core plate portion 21.

[0050] In actual production, along the extension direction of the straight needle groove a2, the length of the cuff facing c is greater than the length of the sleeve piece b. In the folded state, the cuff facing c protrudes beyond the side of the sleeve piece b. Before using the folding and pressing piece 14 to fold out the rounded corner, if only the very end of the cuff facing c is folded, the folding and pressing piece 14 needs to press out a longer line. During the folding and pressing out of the rounded corner, the sleeve piece b is prone to deviate from its intended position due to the deformation of the facing. Folding both the facing and the sleeve piece b at the same time ensures that the position of the sleeve piece b is fixed during the folding and pressing out of the rounded corner.

[0051] like Figure 11 , 12 As shown, in another preferred embodiment, the corner push-fold member 14 has a switchable avoidance station and a top corner station. The straight side 141 and the arc side 142 of the top corner station are projected along the thickness direction as a first straight line and a first arc connected to each other. The end of the first straight line away from the first arc is located within the projection of the sleeve pressing part along the thickness direction.

[0052] Figure 11 In the middle section, the orthographic projection length of the sleeve-patterned portion along the thickness direction is L1, and the length of the first straight line is L2. The two length ranges, L1 and L2, are alternated. As an improvement, Figure 12 In the first straight line, the length is L3, and the length ranges L1 and L3 partially overlap, effectively connecting them. The improved template structure helps ensure that the pre-folded edges of the facing and sleeve piece b are connected with the straight edge of the cuff folded out by the subsequent folded corner piece 14, further improving the overall straightness of the cuff.

[0053] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A cuff rounded corner slit sewing template, characterized in that, It includes a bottom plate, a core plate and a top plate stacked in sequence. The bottom plate, the core plate and the top plate are all provided with intersecting seam cutting grooves. The seam cutting grooves include sewing needle grooves and rounded corner cutting grooves that are connected inside the plate. The sewing needle grooves include two straight needle grooves and rounded corner cross needle grooves that are connected inside the plate between the straight needle grooves.

2. The cuff rounded corner slit sewing template according to claim 1, characterized in that, The base plate includes a positioning base plate portion and a flipping base plate portion that are spliced ​​together on the same layer and rotatably connected at the splicing surface. The splicing surface extends along the length direction of the seam cutting groove and divides the seam cutting groove. The core plate includes a positioning core plate portion and a flipping core plate portion that are separately arranged on the same layer. The positioning core plate portion and the positioning base plate portion can be removed and overlapped directly opposite each other. The flipping core plate portion and the flipping base plate portion can also be removed and overlapped directly opposite each other. The positioning base plate and / or the flipping base plate are symmetrically provided with an inner extension push-fold channel and a corner push-fold member that moves along the push-fold channel. The corner push-fold member has a straight side and a rounded side that push against and connect with the sleeve piece.

3. The cuff rounded corner slit sewing template according to claim 2, characterized in that, The push-folding channel is provided with a rotating shaft extending along the thickness direction of the plate. The corner push-folding component is connected to the rotating shaft and rotates around the rotating shaft. The corner push-folding component has at least one clearance station located on the side of the seam cutting groove.

4. The cuff rounded corner slit sewing template according to claim 2, characterized in that, At the splicing surface of the positioning core plate and the flipping core plate, there is an edge-fitting folding pressure plate. The edge-fitting folding pressure plate is disposed on both sides of the length direction of the seam cutting groove. The edge-fitting folding pressure plate is configured to press the two ends of the edge folded along the seam line against the positioning core plate.

5. The cuff rounded corner slit sewing template according to claim 4, characterized in that, The positioning core plate is removably provided with a folded edge positioning plate, which has a folded edge positioning side that pushes against the edge.

6. The cuff rounded corner slit sewing template according to claim 2, characterized in that, The top plate has a protruding third plate surface facing the core plate, and the pressing and positioning components are respectively disposed on both sides of the rounded corner pin groove. The base plate has a sleeve anti-slip strip on its surface facing the core plate. The flipped core plate has a needle groove extension that extends through it. The needle groove extension is internally connected to the sewing needle groove on the side away from the rounded corner cutting groove. The pressing and positioning member has a pressing station. The orthographic projection of the pressing and positioning member along the plate thickness direction is located within the orthographic projection of the needle groove extension along the plate thickness direction.

7. The cuff rounded corner slit sewing template according to claim 2, characterized in that, The positioning core plate and the top plate have stacked workstations; The positioning core plate and the positioning bottom plate are rotatably connected around a first axis, and the top plate and the positioning core plate are rotatably connected around a second axis. The orthographic projections of the first axis and the second axis along the thickness direction are spaced apart from each other, and the extended section of the second axis intersects the orthographic projection of the first axis along the thickness direction.

8. The cuff rounded corner slit sewing template according to claim 4, characterized in that, The edge-fitting folding pressure plate includes an integrally connected edge-fitting pressing part and a sleeve pressing part. The sleeve pressing part is configured to press the overlapping structure of the edge-fitting and the cut piece, which is folded along the end of the seam line, against the positioning core plate part.

9. The cuff rounded corner slit sewing template according to claim 8, characterized in that, The corner push-fold component has a switchable avoidance station and a top corner station. The orthographic projection of the straight side and the arc side of the top corner station along the thickness direction is a first straight line and a first arc connected to each other. The end of the first straight line away from the first arc is located within the orthographic projection of the sleeve pressing part along the thickness direction.

10. A method for producing rounded corner slits on cuffs, characterized in that, Based on the cuff rounded corner slit sewing template according to any one of claims 1 to 9, the process includes the following steps: S1: Press the sleeve piece onto the base plate and the seam cutting groove of the base plate, and then press the core plate onto the sleeve piece. S2: Press the cuff facing over the core board and the core board seam cutting groove, align the cuff facing with the seam allowance of the sleeve piece, and then press the top plate over the cuff facing. S3: The combination of sleeve piece, cuff facing, and cuff rounded corner slit sewing template obtained in S2 is introduced into the pressing device, and the sleeve piece and cuff facing are pressed along the sewing needle groove; S4: The combination of sleeve piece, cuff facing, and cuff rounded corner slit sewing template obtained in S3 is introduced into the cutting device, and excess seam allowance fabric opposite to the rounded corner slit seam line is cut off along the rounded corner cutting groove.

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