Process for sewing spliced vamps made of different materials

Abstract

The invention discloses a sewing process for spliced vamps made of different materials. The sewing process comprises the following steps that S1, two vamps needing to be spliced are placed on a working platform of a laser engraving machine, then the laser engraving machine is started to engrave sewing paths on the vamps, and sewing path traces are left on the vamps; s2, the two vamps are placed on the curved surface heating structure according to the sewn shape, and the vamps are fixed to the curved surface instant heating structure to be heated and shaped; s3, taking down the formed curved vamps after shaping, placing the curved vamps on a sewing machine according to the form after sewing, and sewing the two vamps together by a worker according to a sewing path trace; s4, when the S2 and the S3 are carried out, the S1 continuously carves the follow-up vamps along the sewing path, and when the S3 is carried out, the S2 continuously heats and shapes the follow-up vamps until all the vamps are processed. According to the process, the dependence on the technical ability of workers is reduced, quality control is guaranteed, and sewing is performed after curved surface shaping, so that the spliced vamps are more durable and attractive.

Description

Technical Field

[0001] The invention relates to the technical field of shoemaking, and in particular to a process for stitching shoe uppers made of different materials. Background Art

[0002] In the current footwear manufacturing industry, splicing uppers is a common upper design method, widely used in sports shoes, casual shoes and other footwear products. Traditional stitching technology for stitching uppers mainly uses hand sewing or mechanical sewing machines for stitching. Although it can achieve the splicing of the upper, it has the following significant disadvantages: 1. The stitching path depends on the technical ability of the workers, which makes it difficult to ensure the quality control of the upper; 2. Most uppers have curved surfaces. The above stitching processes are mostly stitched and stitched when the upper is flat, and the curved surface is shaped after stitching. However, the stitch length and thread tension are set and stitched when the upper is flat. When the upper curve is shaped, the thread tension of the stitching line will be affected, which in turn affects the durability and aesthetics of the upper. Summary of the invention

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a process for stitching uppers made of different materials that can ensure quality control and make the uppers more durable and beautiful.

[0004] To this end, the present invention is implemented by adopting the following technical solutions:

[0005] The stitching process of stitching uppers of different materials is characterized by comprising the following steps:

[0006] S1: Place the two uppers to be spliced ​​on the working platform of the laser engraving machine, and then start the laser engraving machine to engrave the stitching path on the uppers, leaving stitching path marks on the uppers;

[0007] S2: placing the two shoe uppers on the curved surface heating structure according to the stitched shape, and fixing the shoe uppers on the curved surface heating structure for heating and shaping;

[0008] S3: After shaping, the curved upper is removed and placed on the sewing machine according to the stitched shape. The staff sews the two uppers together according to the stitching path traces;

[0009] S4: When S2 and S3 are being performed, S1 continuously carves the stitching path of the subsequent shoe uppers. When S3 is being performed, S2 continuously heats and shapes the subsequent shoe uppers. This process is repeated until all the shoe uppers are processed.

[0010] Furthermore, when the two shoe uppers in S1 are relatively abutted and sewn, the laser engraving machine engraves the sewing path on the two shoe uppers respectively; when the two shoe uppers in S1 are stacked and sewn, the laser engraving machine engraves the sewing path on the upper shoe upper.

[0011] Furthermore, the curved surface heating structure includes a working platform and a base arranged on the working platform, the base is provided with a vertical pole, the front and rear sides of the upper end of the vertical pole both have optical axes, the front optical axis is sleeved with a sleeve, the outer surface of the sleeve is detachably provided with a heating plate, and the heating plate is connected to an external power supply through a wire.

[0012] Furthermore, the sleeve is provided with a positioning plate extending outward and downward, and the front and rear ends of the outer surface of the positioning plate are provided with bending plates bent inward, and the heating plate is laid on the outer surface of the sleeve and inserted into the bending plate.

[0013] Furthermore, an arc-shaped plate is provided at the lower part of the positioning plate, and an arc-shaped through hole is formed on the arc-shaped through hole, and a first bolt is passed through the arc-shaped through hole. Threaded holes for screwing the first bolt are provided on the front and rear sides of the vertical pole.

[0014] Furthermore, vertical plates are provided on the left and right sides of the working platform, and long plates are provided on the front and rear sides of the vertical plates. The inner ends of the long plates are provided with flexible tops that can press the shoe uppers against the positioning plates, and long through holes are provided on the long plates, and second bolts are passed through the long through holes. Threaded holes are provided on the front and rear sides of the vertical plates for screwing the second bolts in.

[0015] Furthermore, the sewing machine is a high-head sewing machine.

[0016] After adopting the above technical solution, the stitching path traces are engraved on the shoe upper by a laser engraving machine. The high precision and flexibility of the laser ensure the accuracy of the stitching path and reduce the dependence on the workers' technical ability to ensure quality control. The two shoe uppers to be spliced ​​are placed on the curved heating structure according to the shape after stitching, and the shoe uppers are fixed on the curved heating structure for heating and shaping, and finally stitched to solve the problem that the line tension of the stitching line will be affected by stitching first and then curved shaping, making the spliced ​​shoe upper more durable, beautiful and smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention has the following accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the curved surface heating structure in the present invention;

[0019] Figure 2 It is a schematic diagram of the top view of the positioning plate and the heating plate in the present invention.

[0020] Figure numerals: 1. working platform; 2. base; 3. vertical pole; 4. optical axis; 5. sleeve; 6. heating plate; 7. positioning plate; 8. bending plate; 9. arc plate; 10. arc through hole; 11. first bolt; 12. vertical plate; 13. long strip plate; 14. flexible top; 15. long strip through hole; 16. second bolt. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] Referring to the above-mentioned figures, the stitching process of the spliced ​​uppers of different materials provided by the present invention includes the following steps:

[0023] S1: Place the two uppers to be spliced ​​on the working platform of the laser engraving machine, and then start the laser engraving machine to engrave the stitching path on the uppers, leaving stitching path marks on the uppers;

[0024] S2: placing the two shoe uppers on the curved surface heating structure according to the stitched shape, and fixing the shoe uppers on the curved surface heating structure for heating and shaping;

[0025] S3: After shaping, the curved upper is removed and placed on the sewing machine according to the stitched shape. The staff sews the two uppers together according to the stitching path traces;

[0026] S4: When S2 and S3 are being performed, S1 continuously carves the stitching path of the subsequent shoe uppers. When S3 is being performed, S2 continuously heats and shapes the subsequent shoe uppers. This process is repeated until all the shoe uppers are processed.

[0027] Furthermore, when the two uppers in S1 are relatively abutted and stitched, the laser engraving machine engraves the stitching path on the two uppers respectively. When the two uppers in S1 are stacked and stitched, the laser engraving machine engraves the stitching path on the upper upper to ensure that the stitching path can be clearly seen in subsequent stitching work.

[0028] Furthermore, the sewing machine is a high-head sewing machine, which usually has an elevated sewing table. The specific structure will not be repeated here. This elevated sewing table facilitates the sewing of the upper after the curve is finalized and is not prone to causing the curved upper to be compressed and deformed, thereby ensuring the quality of the upper.

[0029] In this embodiment, the stitching path traces are engraved on the shoe upper by a laser engraving machine. The high precision and flexibility of the laser ensure the accuracy of the stitching path and reduce the dependence on the workers' technical ability to ensure quality control. The two shoe uppers to be spliced ​​are placed on the curved surface heating structure according to the shape after stitching, and the shoe uppers are fixed on the curved surface heating structure for heating and shaping, and finally stitched to solve the problem that the line tension of the stitching line will be affected by stitching first and then curved shaping, so that the spliced ​​shoe uppers are more durable, beautiful and smoother.

[0030] Reference Figure 1 and Figure 2The above is a schematic diagram of the structure of the curved surface heating structure in the present invention, the curved surface heating structure comprises a working platform 1 and a base 2 arranged on the working platform 1, a vertical rod 3 is arranged on the base 2, the front and rear sides of the upper end of the vertical rod 3 both have an optical axis 4, the optical axis 4 on the front side is sleeved with a sleeve 5, the outer surface of the sleeve 5 is detachably provided with a heating plate 6, the heating plate 6 is connected to an external power supply through a wire, the sleeve 5 is provided with a positioning plate 7 extending outward and downward, the outer front and rear ends of the positioning plate 7 are provided with a bending plate 8 bent inwardly, the heating plate 6 is laid on the outer surface of the sleeve 5 and inserted into the bending plate 8, the positioning An arc-shaped plate 9 is provided at the lower part of the positioning plate 7, and an arc-shaped through hole 10 is provided on the arc-shaped plate 9, and a first bolt 11 is penetrated through the arc-shaped through hole 10, and threaded holes for screwing the first bolt 11 into are provided on the front and rear sides of the upright 3, and upright plates 12 are provided on the left and right sides of the working platform 1, and long plates 13 are provided on the front and rear sides of the upright plates 12, and flexible tops 14 for pressing the shoe upper against the positioning plate 7 are provided at the inner ends of the long plates 13, and long through holes 15 are provided on the long through holes 15, and a second bolt 16 is penetrated through the long through holes 15, and threaded holes for screwing the second bolt 16 into are provided on the front and rear sides of the upright plates 12.

[0031] In this embodiment, first loosen the first bolt 11 and rotate the two sleeves 5 so that the two sleeves 5 form the curved surface required for the upper, then tighten the first bolt 11 to fix the sleeve 5, and then place the two uppers on the heating plate 6 according to the stitched shape, loosen the second bolt 16 and move the long plate 13 so that the flexible top 14 presses the upper against the heating plate 6 and the sleeve 5, then tighten the second bolt 16 to fix the long plate 13, and finally power on the heating plate 6 to heat the upper. After power off and cooling to shape, loosen the second bolt 16 to remove the upper with the curved surface, and then proceed to the next stitching step.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. The stitching process of stitching uppers of different materials is characterized by: The following steps are involved: S1: Place the two uppers to be spliced ​​on the working platform of the laser engraving machine, and then start the laser engraving machine to engrave the stitching path on the uppers, leaving stitching path marks on the uppers; S2: placing the two shoe uppers on the curved surface heating structure according to the stitched shape, and fixing the shoe uppers on the curved surface heating structure for heating and shaping; S3: After shaping, the curved upper is removed and placed on the sewing machine according to the stitched shape. The staff sews the two uppers together according to the stitching path traces; S4: When S2 and S3 are being performed, S1 continuously carves the stitching path of the subsequent shoe uppers. When S3 is being performed, S2 continuously heats and shapes the subsequent shoe uppers. This process is repeated until all the shoe uppers are processed.

2. The stitching process for stitching uppers made of different materials according to claim 1, characterized in that: When the two shoe uppers in S1 are relatively abutted and sewn, the laser engraving machine engraves the sewing path on the two shoe uppers respectively. When the two shoe uppers in S1 are stacked and sewn, the laser engraving machine engraves the sewing path on the upper shoe upper.

3. The stitching process for stitching uppers of different materials according to claim 1 or 2, characterized in that: The curved surface heating structure includes a working platform and a base arranged on the working platform, the base is provided with a vertical pole, the front and rear sides of the upper end of the vertical pole both have optical axes, the optical axis on the front side is sleeved, the outer surface of the sleeve is detachably provided with a heating plate, and the heating plate is connected to an external power supply through a wire.

4. The stitching process for stitching uppers made of different materials according to claim 3 is characterized by: The sleeve is provided with a positioning plate extending outward and downward, and the front and rear ends of the outer surface of the positioning plate are both provided with bending plates bent inward, and the heating plate is laid on the outer surface of the sleeve and inserted into the bending plate.

5. The stitching process for stitching uppers made of different materials according to claim 4 is characterized by: An arc-shaped plate is provided at the lower part of the positioning plate, and an arc-shaped through hole is formed on the arc-shaped through hole, and a first bolt is passed through the arc-shaped through hole. Threaded holes for screwing the first bolt are provided at the front and rear sides of the vertical pole.

6. The stitching process for stitching uppers made of different materials according to claim 5 is characterized by: The working platform is provided with vertical plates on the left and right sides, and long plates are provided on the front and rear sides of the vertical plates. The inner ends of the long plates are provided with flexible tops that can press the shoe uppers against the positioning plates, and the long plates are provided with long through holes, through which second bolts are passed, and threaded holes are provided on the front and rear sides of the vertical plates for screwing the second bolts.

7. The stitching process for stitching uppers made of different materials according to claim 1 is characterized by: The sewing machine is a high-head sewing machine.

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