An auxiliary tool for sewing the front of a hat and its manufacturing method

Abstract

This invention provides an auxiliary tool and manufacturing method for sewing the front side of a hat. It includes a base plate with a limiting plate on it. The limiting plate's two side edges are fixedly connected to the base plate. A positioning plate is slidably disposed between the limiting plate and the base plate. The base plate has an arc groove, and one end of the positioning plate has a positioning edge. One end of the limiting plate has a limiting edge corresponding to the positioning edge. A cover plate is rotatably connected to one end of the base plate, and the cover plate has a mating groove corresponding to the arc groove. The auxiliary tool also includes an insert plate, one end of which has a mating edge that can mate with the positioning edge. When the insert plate mates with the limiting plate, a long groove structure is formed between the mating edge and the limiting edge. The advantage of this invention is that the arc groove and the mating groove serve as sewing path guides. The insert plate, in conjunction with the positioning plate, enables the inward folding of the bottom fabric, achieving reliable inward folding of the fabric, improving the comfort of the front side of the hat, and simultaneously planning the sewing path, thus improving sewing efficiency.

Description

Technical Field

[0001] This invention relates to the field of hat brim sewing technology, and in particular to an auxiliary tool and manufacturing method for sewing the front side of a hat. Background Technology

[0002] Whether it's a sun hat or any other type of hat, the inner front panel usually contacts the forehead. Therefore, compared to the back and other parts of the hat, a lining is needed to improve comfort. For example, a medical non-woven cap, patent number CN202207703731, authorized and announced on June 27, 2023, discloses that the front of the cap body is fixedly sewn with a skin-friendly fabric layer, the inner side of which is fixedly sewn with a sweat-absorbing fabric layer, and the inner side of the cap body is fixedly sewn with a breathable non-woven fabric layer.

[0003] Existing sun hats typically have a ring-shaped top and an arc-shaped front structure, resulting in a break at the top. This makes it easy for the sweat-absorbing fabric layer and the hat body to fold up at the seam, affecting the wearing experience. Furthermore, it is difficult to align the double-layer structure when sewing the arc-shaped front, making it hard to guarantee the sewing quality. Therefore, it is necessary to design an auxiliary tool and manufacturing method that can ensure the efficiency and quality of sewing the double-layer fabric on the front side of the hat. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides an auxiliary tool and manufacturing method for sewing the front side of a hat, which can improve the sewing efficiency of the front side wall of the hat, so that the folded edge is located inside the double-layer fabric, thereby improving the comfort of the front side of the hat.

[0005] To achieve the above objectives, the present invention adopts the following technical solution.

[0006] An auxiliary tool for sewing the front side of a hat includes a base plate with a limiting plate on the base plate. The two sides of the limiting plate are fixedly connected to the base plate. A positioning plate is slidably provided between the limiting plate and the base plate. The base plate has an arc groove, and one end of the positioning plate has a positioning edge. One end of the limiting plate has a limiting edge corresponding to the positioning edge. One end of the base plate is rotatably connected to a cover plate, which has a mating groove corresponding to the arc groove. The auxiliary tool also includes an insert plate, one end of which has a mating edge that can mate with the positioning edge. When the insert plate mates with the limiting plate, a long groove structure is formed between the mating edge and the limiting edge.

[0007] The auxiliary tool disclosed in this application can complete the sewing of double-layer fabric on the front side of the hat. The arc groove and the matching groove serve as sewing path guides, and the cover plate, insert plate and bottom plate clamp the fabric. The insert plate and the positioning plate enable the bottom layer of fabric to be turned inward, thereby achieving reliable inward turning of the fabric and improving the comfort of the front side of the hat, while also planning the sewing path and improving sewing efficiency.

[0008] Preferably, the base plate, cover plate, and limiting plate are provided with corresponding opening slots, and the positioning plate is provided with operating holes that mate with the opening slots. The opening slots provide clearance for the operation of the positioning plate, facilitating operation of the positioning plate through the operating holes.

[0009] Preferably, an operating part is connected to the insert plate. The operating part facilitates the operation of the insert plate, and the operating part can be a thin sheet bonded to the insert plate to avoid affecting the operation of the insert plate due to the thickness of the operating part.

[0010] Preferably, the limiting edge has a first locking edge and a second locking edge at both ends, and one end of the insert plate abuts against the first locking edge and the second locking edge. The first locking edge is a straight edge, and the second locking edge includes a folded edge connected to the limiting edge and a horizontal edge located at the outer end of the folded edge. The horizontal edge is parallel to or coincides with the first locking edge, and the folded edge and the limiting edge form a retraction groove. The parallel horizontal edges of the first locking edge and the second locking edge facilitate the insertion of the insert plate into place, and the retraction groove facilitates the retraction of the needle after sewing, ensuring sewing efficiency.

[0011] Preferably, the upper end of the base plate is rotatably connected to the upper end of the cover plate, and the opening slot is located at the upper end of the base plate and the cover plate. The upper outer sides of the base plate and the limiting plate are provided with an edge binding. The edge binding can serve as a limit for the backward movement of the positioning plate and as a reference for the outward movement of the positioning plate. When the upper end of the positioning plate reaches the edge binding, the positioning edge corresponds to the position within the arc groove or near the mating edge, which facilitates the subsequent docking of the insert plate and the positioning plate to complete the directional flanging of the fabric.

[0012] Preferably, the positioning edge includes a bottom edge that fits against the mating edge and a transition edge located outside the bottom edge. The transition edge has an arc-shaped cross-section. When the insert plate and the limiting plate are in place, the mating edge corresponds to the position of the upper wall of the arc groove. When the positioning plate is lowered into place, the bottom edge and the mating edge coincide, and the transition edge flips up the flange located outside the mating edge, ensuring the reliability of the flange forming. The position of the mating edge corresponds to the flange position of the fabric, ensuring that the flange position corresponds to the arc groove, thereby ensuring the reliability of the flange sewing.

[0013] Preferably, the cover plate and bottom plate are made of transparent material, while the limiting plate and positioning plate are made of colored material. The transparent material of the cover plate and bottom plate makes it easy to observe the position of the fabric, positioning plate and insert plate. The colored material of the positioning plate and limiting plate serves as an indicator, making it easy to observe the matching position of the positioning edge and the mating edge, ensuring the reliability of the inward turning and sewing of the hem.

[0014] A method for manufacturing an auxiliary tool based on the above-mentioned front-side sewing of a hat, used to complete the inward sewing of the bottom fabric folded over and the lining fabric, includes the following steps:

[0015] A. Place the base plate flat on the workbench, move the positioning plate outward into place, and flip the cover plate outward to the outside of the base plate;

[0016] B. Place the base fabric on the base plate, lay the base fabric flat, and cover the positioning edge with one end of the base fabric;

[0017] C. Place the insert plate on the upper side of the bottom fabric, ensuring that the position of the insert plate matches the limiting plate.

[0018] D. Push the positioning plate to slide, so that the positioning edge fits with the mating edge, and the mating edges of the positioning plate and the insert plate are pressed together, causing the outer end of the bottom fabric to be flipped up;

[0019] E. Place the lining fabric flat on the insert plate and the limiting plate, and fold the folded edge of the bottom fabric between the lining fabric and the bottom fabric.

[0020] F. Cover the cover plate, flip the auxiliary tool so that the base plate where the arc groove is located is facing upwards, and pull out the insert plate while keeping the base plate and cover plate pressed together.

[0021] G. Move the auxiliary tool under the sewing machine to sew, using the arc groove as the sewing path.

[0022] Complete the process of turning the bottom fabric inside out and sewing it with the lining to improve the sewing efficiency of the front of the hat and ensure the comfort of the front of the hat.

[0023] The beneficial effects of this invention are: it can improve the sewing efficiency of the front side wall of the hat; and it allows the folded edge to be located inside the double-layered fabric, thereby improving the comfort of the front side of the hat. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention.

[0025] Figure 2 This is a schematic diagram of the base plate and the structure thereon of the present invention.

[0026] Figure 3 yes Figure 2 Sectional view at point AA.

[0027] Figure 4 This is a schematic diagram of the insert plate in this invention.

[0028] Figure 5 This is a cross-sectional schematic diagram of the positioning edge in this invention.

[0029] In the diagram: Base plate 1, Arc groove 11, Opening groove 12, Limiting plate 2, Limiting edge 21, First locking edge 22, Second locking edge 23, Folded edge 231, Horizontal edge 232, Retracting groove 24, Folding plate 25, Positioning plate 3, Operating hole 31, Positioning edge 32, Bottom edge 321, Transition edge 322, Enclosing edge 33, Cover plate 4, Mating groove 41, Insert plate 5, Mating edge 51, Operating part 52. Detailed Implementation

[0030] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] like Figures 1 to 5 As shown, an auxiliary tool for sewing the front side of a hat includes a base plate 1, a limiting plate 2 on the base plate 1, and two side edges of the limiting plate 2 fixedly connected to the base plate 1. Folded plates 25 are provided on both side edges of the limiting plate 2, and the base plate 1 and the limiting plate 2 are respectively bonded to the sides of the folded plates 25. A cavity is created between the limiting plate 2 and the base plate 1 by the folded plates 25. A positioning plate 3 is slidably provided between the limiting plate 2 and the base plate 1, sliding along the edge of the folded plates 25 within the cavity. An arc groove 11 is provided on the base plate 1, and a positioning edge 32 is provided at the lower end of the positioning plate 3. A cover plate 4 is rotatably connected to one end of the base plate 1. The base plate 1, cover plate 4, and limiting plate 2 are provided with corresponding opening grooves 12, which are semi-circular in shape. In this embodiment, the upper end of the base plate 1 is rotatably connected to the upper end of the cover plate 4, the opening groove 12 is located at the upper end of the base plate 1 and the cover plate 4, and an edging 33 is provided on the outer side of the upper end of the base plate 1 and the limiting plate 2. The cover plate 4 and the bottom plate 1 are made of transparent material, while the limiting plate 2 and the positioning plate 3 are made of colored material.

[0033] One end of the limiting plate 2 is provided with a limiting edge 21 corresponding to the positioning edge 32, and the cover plate 4 is provided with a mating groove 41 corresponding to the arc groove 11; the auxiliary tool also includes an insert plate 5, one end of which is provided with a mating edge 51 that can mate with the positioning edge 32; when the insert plate 5 mates with the limiting plate 2, a long groove structure is formed between the mating edge 51 and the limiting edge 21. The positioning edge 32 includes a bottom edge 321 that can fit with the mating edge 51 and a transition edge 322 located outside the bottom edge 321. The cross-sectional shape of the transition edge 322 is arc-shaped. When the insert plate 5 and the limiting plate 2 are in place, the position of the mating edge 51 corresponds to the upper groove wall of the arc groove 11. The limiting edge 21 has a first locking edge 22 and a second locking edge 23 at its two ends, and one end of the insert plate 5 abuts against the first locking edge 22 and the second locking edge 23. The first locking edge 22 is a straight edge, and the second locking edge 23 includes a folded edge 231 connected to the limiting edge 21 and a horizontal edge 232 located at the outer end of the folded edge 231. The horizontal edge 232 is parallel to or coincides with the first locking edge 22, and the folded edge 231 and the limiting edge 21 form a relief groove 24. The positioning edge 32, the limiting edge 21, and the mating edge 51 are all arc-shaped. When the insert plate 5 and the limiting plate 2 are in place, the limiting edge 21 and the mating edge 51 are concentric arcs. The positioning plate 3 has an operating hole 31 on the mating opening groove 12. The operating hole 31 is elliptical in shape and is located inside the opening groove 12. An operating part 52 is connected to the insert plate 5. The operating part 52 is a thin sheet bonded to the insert plate 5.

[0034] Example 2

[0035] A method for manufacturing an auxiliary tool based on the above-mentioned front-side sewing of a hat, used to complete the inward sewing of the bottom fabric folded over and the lining fabric, includes the following steps:

[0036] A. Place the base plate 1 flat on the workbench, move the positioning plate 3 outward into place, and flip the cover plate 4 outward to the outside of the base plate 1.

[0037] B. Place the base fabric on the base plate 1, lay the base fabric flat, and cover the positioning edge 32 with one end of the base fabric; the shape of the base fabric is a circular segment, the size of the base fabric is smaller at the top and larger at the bottom, and the smaller end of the base fabric covers the positioning edge 32 between 0.5 and 1 cm.

[0038] C. The insert plate 5 is placed on the upper side of the bottom fabric, and the position of the insert plate 5 is matched with the limiting plate 2, that is, the two sides of the upper end of the insert plate 5 are respectively attached to the horizontal edge 232 of the first locking edge 22 and the second locking edge 23.

[0039] D. By pushing the positioning plate 3 through the operating hole 31, the positioning edge 32 is pressed against the mating edge 51, and the mating edges of the positioning plate 3 and the insert plate 5 are pressed together, causing the outer end of the bottom fabric to be flipped up.

[0040] E. Place the lining fabric flat on the insert plate 5 and the limiting plate 2, and flip the edge of the bottom fabric with the edge 51 between the lining fabric and the bottom fabric.

[0041] F. Cover with cover plate 4, keeping cover plate 4 and base plate 1 pressed together, flip the auxiliary tool so that the base plate 1 where the arc groove 11 is located faces upward; while keeping base plate 1 and cover plate 4 pressed together, pull out insert plate 5;

[0042] Move the auxiliary tool under the sewing machine to sew, with the arc groove 11 serving as the sewing path.

[0043] The auxiliary tool disclosed in this application can complete the sewing of double-layer fabric on the front side of the hat. The arc groove 11 and the matching groove 41 serve as sewing path guides. The cover plate 4, the insert plate 5 and the bottom plate 1 clamp the fabric. The insert plate 5, together with the positioning plate 3, enables the bottom layer of fabric to be turned inward. This not only achieves reliable inward turning of the fabric and improves the comfort of the front side of the hat, but also allows for planning the sewing path and improving sewing efficiency.

Claims

1. An auxiliary tool for sewing the front side of a hat, characterized in that, The system includes a base plate with a limiting plate on it. The two sides of the limiting plate are fixedly connected to the base plate. A positioning plate is slidably provided between the limiting plate and the base plate. The base plate has an arc groove, and one end of the positioning plate has a positioning edge. One end of the limiting plate has a limiting edge corresponding to the positioning edge. One end of the base plate is rotatably connected to a cover plate, which has a mating groove corresponding to the arc groove. The auxiliary tool also includes an insert plate, one end of which has a mating edge that can mate with the positioning edge. When the insert plate mates with the limiting plate, a long groove structure is formed between the mating edge and the limiting edge. The two ends of the limiting edge are respectively provided with a first locking edge and a second locking edge, and one end of the insert plate abuts against the first locking edge and the second locking edge; the first locking edge is a straight edge, and the second locking edge includes a folded edge connected to the limiting edge and a horizontal edge located at the outer end of the folded edge. The horizontal edge is parallel to or coincides with the first locking edge, and the folded edge and the limiting edge form a tool relief groove. The insert plate is connected to an operating part. The positioning edge, limiting edge, and mating edge are all arc-shaped. When the insert plate and the limiting plate are in place, the limiting edge and the mating edge are concentric arcs. The two sides of the limiting plate are provided with folded plates. The bottom plate and the limiting plate are respectively attached and bonded to the two sides of the folded plates. The folded plates support a cavity between the limiting plate and the bottom plate. The positioning plate slides along the edge of the folded plate in the cavity.

2. The auxiliary tool for sewing the front side of a hat according to claim 1, characterized in that, The base plate, cover plate, and limiting plate are provided with corresponding opening slots, and the positioning plate is provided with an operating hole that matches the opening slot. The operating hole is elliptical in shape and is located inside the opening slot.

3. The auxiliary tool for sewing the front side of a hat according to claim 1, characterized in that, The operating part uses a thin sheet bonded to the insert plate.

4. The auxiliary tool for sewing the front side of a hat according to claim 2, characterized in that, The upper end of the base plate is rotatably connected to the upper end of the cover plate, the opening groove is located at the upper end of the base plate and the cover plate, and the outer side of the upper end of the base plate and the limiting plate is provided with a binding edge.

5. The auxiliary tool for sewing the front side of a hat according to claim 1, characterized in that, The positioning edge includes a bottom edge that can fit with the mating edge and a transition edge located outside the bottom edge. The cross-sectional shape of the transition edge is arc-shaped. When the insert plate and the limiting plate are in place, the position of the mating edge corresponds to the position of the upper side wall of the arc groove.

6. The auxiliary tool for sewing the front side of a hat according to claim 1 or 2, characterized in that, The cover plate and bottom plate are made of transparent material, while the limiting plate and positioning plate are made of colored material.

7. A method for manufacturing an auxiliary tool for sewing the front side of a hat according to any one of claims 1 to 6, characterized in that, The steps for completing the inward turning of the base fabric and sewing it to the lining include: A. Place the base plate flat on the workbench, move the positioning plate outwards into place, and flip the cover plate outwards to the outside of the base plate. B. Place the base fabric on the base plate and lay it flat, with one end of the base fabric covering the positioning edge; the shape of the base fabric is a circular segment, with the size of the base fabric being smaller at the top and larger at the bottom, and the smaller end of the base fabric covering the positioning edge by 0.5 to 1 cm. C. Place the insert plate on the upper side of the bottom fabric, and ensure that the position of the insert plate matches the limiting plate; the two sides of the upper end of the insert plate should be attached to the horizontal edges of the first and second locking edges, respectively. D. Push the positioning plate to slide, so that the positioning edge fits with the mating edge, and the mating edges of the positioning plate and the insert plate are pressed together, causing the outer end of the bottom fabric to be flipped up. E. Place the lining fabric flat on the insert plate and the limiting plate, and fold the folded edge of the bottom fabric between the lining fabric and the bottom fabric. F. Cover the cover plate, flip the auxiliary tool so that the bottom plate where the arc groove is located is facing upwards, and pull out the insert plate while keeping the bottom plate and cover plate pressed together. G. Move the auxiliary tool under the sewing machine to sew, using the arc groove as the sewing path.

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