A method of improving the creasing of the reverse welt of a shoe

Abstract

The application discloses a method for improving the wrinkle of a shoe back collar, which comprises the following steps: manufacturing a back collar, an elastic inner lining, an outer lining and a foam core, the length of the elastic inner lining is shorter than that of the outer lining, the distance between the short sides of the same side of the foam core and the outer lining is larger than the distance between the long sides of the same side, and the back collar is provided with a foam core avoiding hole which is matched with the outer contour of the foam core; the foam core is elongated and pasted in the middle of the outer lining, the elastic inner lining is elongated and pasted to be aligned with the edge of the outer lining, and then the elastic inner lining and the outer lining are stitched along the edge of the foam core to obtain a collar foam; the elastic inner lining of the collar foam is directed to the back collar, the collar foam and the back collar are overlapped, the foam core is extended out of the foam core avoiding hole, and the collar foam and the back collar are stitched along the edge of the foam core avoiding hole to obtain a back collar. The back collar manufactured by the method is wrinkle-free, and is beneficial to improving the product appearance and wearing comfort.

Description

Technical Field

[0001] This invention relates to the field of footwear technology, and in particular to a method for improving the wrinkles on the inside of shoes. Background Technology

[0002] The lining typically refers to an internal structure of the shoe located above the heel. The design and materials used in this area play a crucial role in the shoe's comfort and heel protection.

[0003] To reduce the impact on the feet during walking and exercise, lower the risk of injury, improve shoe comfort, and provide better support and protection for the feet, the lining of shoes typically uses inner foam padding. For example, Chinese utility model patent application number CN210747569U discloses a transparent and breathable shoe where the back panel and lining are distributed around the inside and outside of the shoe collar, and the lining is sewn to the collar and contains sponge. This method creates wrinkles in the lining at the foam padding area of ​​the collar, affecting both aesthetics and wearing comfort. Summary of the Invention

[0004] To address the above problems, the present invention aims to provide a method for improving the wrinkles on the inside of shoes.

[0005] To achieve the above objectives, the technical solution proposed by this invention is as follows:

[0006] A method for improving folds inside the mouth includes the following steps:

[0007] S10. Fabricate the back lining, elastic inner lining, outer lining, and foam core; the shapes of the elastic inner lining and outer lining are adapted to the outer contour of the foam core, the length of the elastic inner lining is smaller than the length of the outer lining, and the distance between the short sides on the same side of the foam core and the outer lining is greater than the distance between the long sides on the same side. The back lining is provided with foam core clearance holes adapted to the outer contour of the foam core.

[0008] S20. Stretch the foam core and stick it to the middle of the outer lining. Stretch the elastic inner lining to align with the edge of the outer lining and stick it together. Then, sew the elastic inner lining and the outer lining along the edge of the foam core to obtain a collar foam in which the foam core is wrapped between the outer lining and the elastic inner lining.

[0009] S30. With the elastic lining of the collar foam facing the back, overlap the collar foam and the back lining and make the foam core extend out of the foam core clearance hole. Sew the collar foam and the back lining along the edge of the foam core clearance hole to obtain the reverse lining.

[0010] Preferably, in step S10, the width of the elastic inner lining is the same as the width of the outer lining, and the distance between the short sides of the elastic inner lining and the outer lining on the same side is 2mm.

[0011] Preferably, in step S10, the distance between the short sides of the foam core and the outer lining on the same side is 2mm larger than the distance between the long sides on the same side.

[0012] Preferably, step S20 is completed with the assistance of a first fixture, which includes a first base plate and a first pressure plate. The first fixture has a first clearance hole that penetrates the first base plate and the second pressure plate. The first clearance hole is used to avoid the needle tip during thread stitching. The first base plate is provided with a plurality of first positioning pins around the first clearance hole. The first positioning pins are used to position the outer liner and the elastic inner liner. The first pressure plate has a plurality of first positioning holes that engage with the plurality of first positioning pins.

[0013] Preferably, the outer liner is provided with positioning marks for positioning the foam core and a plurality of outer liner positioning holes that cooperate with a plurality of first positioning pins, and the elastic inner liner is provided with inner liner positioning holes that cooperate with a plurality of first positioning pins. Step S20, which is completed with the assistance of a first fixture, is as follows:

[0014] S21. Hang the outer liner on the first positioning pin through the outer liner positioning hole;

[0015] S22. Align the foam core with the positioning mark, stretch it out, and stick it to the outer lining;

[0016] S23. Stretch the elastic liner and hang the elastic liner on the first positioning pin through the liner positioning hole.

[0017] S24. Cover the first pressure plate and press the elastic inner liner and outer liner together;

[0018] S25. Install the first fixture onto the computerized pattern sewing machine, and perform stitching on the elastic inner lining and outer lining to obtain the collar foam.

[0019] Preferably, step S30 is completed with the assistance of a second fixture, which includes a second base plate and a second pressure plate. The second fixture has a second clearance hole penetrating through the second base plate and the second pressure plate. This clearance hole is used to avoid needles during stitching. The second base plate has a plurality of second positioning pins around the second clearance hole. These second positioning pins are used to position the neckline foam and back lining. The second pressure plate has second positioning holes that engage with the plurality of second positioning pins.

[0020] Preferably, the rear end has a plurality of rear positioning holes that mate with a plurality of second positioning pins. Step S30, completed with the assistance of a second fixture, is as follows:

[0021] S31. With the outer lining of the collar foam facing the second base plate, the collar foam is stacked on the second base plate and positioned by several of the second positioning pins.

[0022] S32. Hang the rear inner lining on the second positioning pin through the rear inner positioning hole;

[0023] S33. Cover with the second pressure plate to clamp the back lining and collar foam.

[0024] S34. Install the second fixture onto the computer pattern sewing machine and sew it to obtain the reverse lining.

[0025] Preferably, the outer lining has notches on both sides, and the collar foam is positioned by engaging with the second positioning pin through the notches.

[0026] Preferably, one side of the outer liner is provided with self-adhesive, and the foam core and elastic inner liner are bonded to the outer liner by the self-adhesive.

[0027] Preferably, the outer lining is made of non-woven fabric, the elastic inner lining is made of four-way stretch fabric, and the back lining is made of microfiber fabric.

[0028] The beneficial effects of the present invention by adopting the above technical solution are as follows: The present invention improves the manufacturing method of the reverse lining. By redesigning the size of the neckline foam and improving the manufacturing method of the reverse lining, the reverse lining is neat and wrinkle-free, which helps to improve the product appearance and wearing comfort. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the opening in this embodiment (the suture lines are not shown).

[0030] Figure 2 This is a schematic diagram comparing the dimensions of the outer liner, foam core, and elastic inner liner in this embodiment.

[0031] Figure 3 This is a schematic diagram of the outer liner in this embodiment.

[0032] Figure 4 This is a schematic diagram of the elastic liner in this embodiment.

[0033] Figure 5 This is a schematic diagram of the rear structure of this embodiment.

[0034] Figure 6 This is a schematic diagram of the structure of the first fixture, outer liner, foam core and elastic inner liner before assembly in this embodiment.

[0035] Figure 7 This is a schematic diagram of the assembly of the first fixture and the collar foam in this embodiment.

[0036] Figure 8 This is a schematic diagram of the assembly of the second fixture and the reverse opening in this embodiment.

[0037] Figure 9 for Figure 8 An explosion diagram.

[0038] The components are: 1. Neckline foam; 11. Outer lining; 111. Positioning mark; 112. Outer lining positioning hole; 113. Tooth; 12. Foam core; 13. Elastic inner lining; 131. Inner lining positioning hole; 2. Back lining; 21. Foam core clearance hole; 22. Back lining positioning hole; 3. First fixture; 31. First base plate; 311. First positioning pin; 32. First pressure plate; 321. First positioning hole; 33. First clearance hole; 4. Second fixture; 41. Second base plate; 411. Second positioning pin; 42. Second pressure plate; 421. Second positioning hole; 43. Second clearance hole. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0040] Combination Figures 1-9 This embodiment provides a method for improving wrinkles on the lining of shoes, which includes the following steps:

[0041] S10. Prepare non-woven fabric, four-way stretch fabric, microfiber fabric, and foam. Cut out foam core 12, outer lining 11, and elastic inner lining 13 from foam, non-woven fabric, and four-way stretch fabric respectively. Cut out back lining 2 from microfiber fabric, and cut out foam core clearance holes 21 on back lining 2 that match the outer contour of foam core 12.

[0042] Both the outer liner 11 and the elastic inner liner 13 are shaped to fit the outer contour of the foam core 12. Specifically, the overall shape of the elastic inner liner 13 and the outer liner 11 is basically the same, their widths are the same, and the length of the elastic inner liner 13 is shorter than that of the outer liner 11, preferably by 4mm, with 2mm difference on each side. Figure 2 The distance 'a' between the short sides of the medium elastic inner lining 13 and the outer lining 11 on the same side is 2mm. The distance 'b2' between the short sides of the foam core 12 and the outer lining 11 on the same side is greater than the distance 'b1' between the long sides on the same side, preferably greater than 4mm, with 2mm on each side. Figure 2 The distance b2 between the short sides of the inner foam core 12 and the outer lining 11 on the same side is 2mm larger than the distance b1 between the long sides on the same side.

[0043] To facilitate the alignment and pasting of the foam core 12 in step S20, positioning marks 111 for positioning the foam core 12 can be provided on the outer liner 11.

[0044] S20. Stretch the foam core 12 and attach it to the middle of the outer lining 11. Stretch the elastic inner lining 13 until it is aligned with the edge of the outer lining 11 and attach it. Then, sew the elastic inner lining 13 and the outer lining 11 along the edge of the foam core 12 to obtain the neckline foam 1 with the foam core 12 wrapped between the outer lining 11 and the elastic inner lining 13.

[0045] The bonding of the outer lining 11 to the foam core 12 and the elastic inner lining 13 can be achieved by applying adhesive in real time. Of course, for ease of operation, in step S10, a non-woven fabric with self-adhesive on its surface can be selected to make the outer lining 11, or self-adhesive can be pasted onto the surface of the made outer lining 11.

[0046] S30. With the elastic lining 13 of the neckline foam 1 facing the back lining 2, stack the neckline foam 1 and the back lining 2 together, and let the foam core 12 extend from the foam core clearance hole 21. Sew the neckline foam 1 and the back lining 2 along the edge of the foam core clearance hole 21 to obtain the reversed lining. In this embodiment, by designing the dimensions of the foam core 12, the elastic lining 13 and the outer lining 11, and by combining the foam core 12 and the elastic lining 13 with the outer lining 11 in a pre-stretched state, after the reversed lining is made, the foam core 12 and the elastic lining 13 will be released from the stretched state, causing the reversed lining to naturally bend into an arc shape, and no wrinkles will appear on the surface.

[0047] To reduce operational difficulty, improve processing efficiency, ensure product consistency, and increase yield, this embodiment uses a first fixture 3 to assist in completing step S20 and a second fixture 4 to assist in completing step S30. Both the first fixture 3 and the second fixture 4 can be used with the pressing frame of a computerized pattern sewing machine, which can solve the problems of cumbersome and difficult manual sewing operation.

[0048] The first fixture 3 in this embodiment includes a first base plate 31 and a first pressure plate 32. The first base plate 31 and the first pressure plate 32 have first clearance holes 33 opposite to each other to allow the needles to pass during stitching. The outline of the first clearance holes 33 is adapted to the outer outline of the foam core 12. The first base plate 31 has a plurality of first positioning pins 311 around the first clearance holes 33, and first positioning holes 321 are used to position the outer liner 11 and the elastic inner liner 13. The first pressure plate 32 has a plurality of first positioning holes 321 around the first clearance holes 33, and each first positioning hole 321 corresponds to one of the first positioning pins 311 and can be inserted into the first positioning pin.

[0049] In order to be used in conjunction with the first fixture 3, during the manufacturing process of step S10, a number of outer liner positioning holes 112 corresponding to the first positioning pins 311 can be opened on the outer liner 11, and a number of inner liner positioning holes 131 corresponding to the first positioning pins 311 can be opened on the elastic inner liner 13.

[0050] The process of completing step S20 with the assistance of the first fixture 3 is as follows:

[0051] S21. Hang the outer liner 11 on the first positioning pin 311 through the outer liner positioning hole 112.

[0052] S22. Align the foam core 12 with the positioning mark 111, stretch it, and stick it on the outer liner 11.

[0053] S23, stretch the elastic liner 13 and hang the elastic liner 13 on the first positioning pin 311 through the liner positioning hole 131.

[0054] S24. Cover with the first pressure plate 32 and press the elastic inner liner 13 and outer liner 11 together.

[0055] S25. Install the first fixture 3 onto the computer pattern sewing machine and sew the elastic inner lining 13 and outer lining 11 together to obtain the neckline foam 1.

[0056] The second fixture 4 in this embodiment includes a second base plate 41 and a second pressure plate 42. The second base plate 41 and the second pressure plate 42 have opposite second clearance holes 43 for avoiding needles during stitching. The outline of the second clearance hole 43 is adapted to the outer outline of the foam core 12. The second base plate 41 has a plurality of second positioning pins 411 around the second clearance holes 43. Second positioning holes 421 are used to position the neckline foam 1 and the back lining 2. The second pressure plate 42 has a plurality of second positioning holes 421 around the second clearance holes 43. Each second positioning hole 421 corresponds to one of the second positioning pins 411 and can be inserted into the other.

[0057] In order to be used in conjunction with the second fixture 4, during the manufacturing process of step S10, a number of rear positioning holes 22 corresponding to the second positioning pins 411 can be opened on the rear inner 2.

[0058] The process of completing step S30 with the assistance of the second fixture 4 is as follows:

[0059] S31. With the outer lining 11 of the collar foam 1 facing the second base plate 41, the collar foam 1 is stacked on the second base plate 41 and positioned by a number of second positioning pins 411.

[0060] Several second positioning pins 411 are distributed around the collar foam 1, which can externally position the collar foam 1 according to its shape. Of course, in order to prevent the collar foam 1 from shifting, during the manufacturing process of step S10, teeth 113 can be opened on any opposite sides of the outer lining 11, and the positioning can be achieved by the teeth 113 on both sides correspondingly engaging with the second positioning pins 411 on both sides of the collar foam 1.

[0061] S32. Hang the rear inner 2 on the second positioning pin 411 through the rear inner positioning hole 22.

[0062] S33. Cover with the second pressure plate 42 to clamp the back lining 2 and the neckline foam 1.

[0063] S34. Install the second fixture 4 onto the computer pattern sewing machine, and sew the neckline foam 1 and back lining 2 together to obtain the reversed lining.

[0064] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail to the invention without departing from the spirit and scope of the invention as defined in the appended claims are within the scope of protection of the invention.

Claims

1. A method for improving wrinkles on the lining of shoes, characterized in that, Includes the following steps: S10. Fabricate the back lining (2), elastic inner lining (13), outer lining (11), and foam core (12); the shapes of the elastic inner lining (13) and outer lining (11) are adapted to the outer contour of the foam core (12); the length of the elastic inner lining (13) is smaller than the length of the outer lining (11), and the distance between the short sides on the same side of the foam core (12) and outer lining (11) is greater than the distance between the long sides on the same side; the back lining (2) is provided with foam core clearance holes (21) adapted to the outer contour of the foam core (12). S20. Stretch the foam core (12) and paste it to the middle of the outer lining (11). Stretch the elastic inner lining (13) to align with the edge of the outer lining (11) and paste it. Then, sew the elastic inner lining (13) and the outer lining (11) along the edge of the foam core (12) to obtain the collar foam (1) with the foam core (12) wrapped between the outer lining (11) and the elastic inner lining (13). S30. With the elastic lining (13) of the collar foam (1) facing the back lining (2), overlap the collar foam (1) and the back lining (2) and make the foam core (12) extend out from the foam core clearance hole (21). Sew the collar foam (1) and the back lining (2) along the edge of the foam core clearance hole (21) to obtain the reverse lining.

2. The method for improving the wrinkles on the lining of shoes according to claim 1, characterized in that, In step S10, the width of the elastic inner liner (13) is the same as the width of the outer liner (11), and the distance between the short sides of the same side of the elastic inner liner (13) and the outer liner (11) is 2mm.

3. The method for improving the wrinkles on the lining of shoes according to claim 2, characterized in that, In step S10, the distance between the short sides of the foam core (12) and the outer lining (11) on the same side is 2mm larger than the distance between the long sides on the same side.

4. The method for improving the wrinkles on the lining of shoes according to claim 1, characterized in that, Step S20 is completed with the assistance of the first fixture (3); The first fixture (3) includes a first base plate (31) and a first pressure plate (32); the first fixture (3) has a first clearance hole (33) that passes through the first base plate (31) and the second pressure plate (42), the first clearance hole (33) is used to avoid the needle tip when stitching, the first base plate (31) has a plurality of first positioning pins (311) around the first clearance hole (33), the first positioning pins (311) are used to position the outer liner (11) and the elastic inner liner (13), and the first pressure plate (32) has a plurality of first positioning holes (321) for inserting and cooperating with the plurality of first positioning pins (311).

5. The method for improving the wrinkles on the lining of shoes according to claim 4, characterized in that, The outer liner (11) is provided with a positioning mark (111) for positioning the foam core (12) and a plurality of outer liner positioning holes (112) for cooperating with a plurality of first positioning pins (311). The elastic inner liner (13) is provided with inner liner positioning holes (131) for cooperating with a plurality of first positioning pins (311). The steps of step S20, which are completed with the assistance of the first fixture (3), are as follows: S21. Hang the outer liner (11) on the first positioning pin (311) through the outer liner positioning hole (112); S22. Align the foam core (12) with the positioning mark (111), stretch it out and stick it on the outer lining (11); S23, stretch the elastic liner (13) and hang the elastic liner (13) on the first positioning pin (311) through the liner positioning hole (131); S24. Cover the first pressure plate (32) and press the elastic inner liner (13) and outer liner (11) together; S25. The first fixture (3) is installed on the computer pattern making machine, and the elastic inner lining (13) and outer lining (11) are stitched together to obtain the collar foam (1).

6. The method for improving the wrinkles on the lining of shoes according to claim 1, characterized in that, Step S30 is completed with the assistance of the second fixture (4); The second fixture (4) includes: a second base plate (41) and a second pressure plate (42); the second fixture (4) has a second clearance hole (43) that passes through the second base plate (41) and the second pressure plate (42), the second clearance hole (43) is used to avoid the needle tip when stitching, the second base plate (41) is provided with a plurality of second positioning pins (411) around the second clearance hole (43), the second positioning pins (411) are used to position the collar foam (1) and the back lining (2), and the second pressure plate (42) has a plurality of second positioning holes (421) for inserting and cooperating with the plurality of second positioning pins (411).

7. The method for improving the wrinkles on the lining of shoes according to claim 6, characterized in that, The rear lining (2) is provided with a plurality of rear lining positioning holes (22) for cooperating with a plurality of second positioning pins (411); The steps of step S30, which are completed with the assistance of the second fixture (4), are as follows: S31. With the outer lining (11) of the collar foam (1) facing the second base plate (41), the collar foam (1) is stacked on the second base plate (41) and positioned by a number of the second positioning pins (411). S32. Hang the rear inner (2) on the second positioning pin (411) through the rear inner positioning hole (22); S33. Cover the second pressure plate (42) and clamp the back lining (2) and the collar foam (1) together; S34. Install the second fixture (4) onto the computer pattern sewing machine and sew it to obtain the reverse lining.

8. The method for improving the wrinkles on the lining of shoes according to claim 6 or 7, characterized in that, The outer lining (11) has teeth (113) on its opposite sides, and the collar foam (1) is positioned by engaging with the second positioning pin (411) through the teeth (113).

9. The method for improving the wrinkles on the lining of shoes according to any one of claims 1 to 7, characterized in that, The outer liner (11) has a self-adhesive on one side, and the foam core (12) and the elastic inner liner (13) are bonded to the outer liner (11) by the self-adhesive.

10. The method for improving the wrinkles on the lining of shoes according to any one of claims 1 to 7, characterized in that, The outer lining (11) is made of non-woven fabric, the elastic inner lining (13) is made of four-way stretch fabric, and the back lining (2) is made of microfiber fabric.

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