Method for manufacturing seamless full-formed 3D string shoe upper

Abstract

The technical scheme of the present application provides a seamless full-molding 3D string shoe manufacturing process: drawing, mold making, weaving, wrapping, vacuum suction, stripping, finished product inspection, and packaging. The shoe mold comprises a shoe mold main body, which is provided with a plurality of positioning rods according to actual needs.

Description

Technical Field

[0001] This invention relates to the field of shoe upper technology, and in particular to a method for manufacturing a seamless, fully molded 3D filament shoe upper. Background Technology

[0002] Flyknit, jacquard, or woven fabrics are commonly used in the market today. However, these fabrics lack breathability and cannot achieve all-around breathability. Furthermore, their thickness can easily lead to discomfort for users. To address this, the applicant has developed a string-embroidered fabric and shoes incorporating it (application number: CN202110737991.1). While this fabric allows for cross-ventilation at various points, thus achieving all-around breathability and better performance, the string-embroidered fabric manufacturing process has the following drawbacks: the production process is not simple, still involving cutting and sewing compared to traditional methods. This makes the shoe upper production process overly cumbersome, requiring manual intervention at each stage, resulting in excessive manpower and resources and hindering cost savings. Summary of the Invention

[0003] Therefore, in view of the above problems, the present invention proposes a seamless fully molded 3D string wire shoe upper and a manufacturing method thereof.

[0004] To achieve the above objectives, the technical solution of the present invention is to provide a seamless, fully molded 3D wire-wire shoe upper manufacturing process: Step 1: Draw the design, confirming the pattern and size of the shoe upper; Step 2: Mold making. A shoe mold that conforms to the shape of the shoe upper is made according to the size of the shoe upper. Positioning rods are installed on the shoe mold as needed. Step 3: Weaving. Fix the shoe mold with the positioning rod installed, and use a robotic arm to weave and wrap hot melt wire around the shoe mold until the shape of the shoe upper is woven on the shoe upper. Step 4: Wrapping. Wrap the finished shoe mold with an elastic sleeve and heat the elastic sleeve. Step 5: Vacuum forming, removing the air between the elastic sleeve and the shoe upper, so that the heated elastic sleeve is adsorbed onto the shoe mold, thereby heat-pressing the woven shoe upper; Step Six: Remove the sleeve, release the vacuum suction, and take off the elastic sleeve; Step 7: Finished product, remove the hot-pressed shoe upper; Step 8: Inspection. Inspect all parameters of the finished shoe upper. Step 9: Packaging. The finished shoe uppers are packaged for delivery to the next process. The shoe mold includes: a shoe mold body, which is provided with a number of positioning rods according to actual needs.

[0005] A further improvement is that the hot melt wire includes a TPU wire, the TPU wire having a melting temperature range of 150°C to 250°C.

[0006] A further improvement is that the elastic sleeve is a high-temperature resistant rubber sleeve.

[0007] A further improvement is that the positioning rod is threaded to the shoe mold body for easy disassembly.

[0008] A further improvement is that a retraction device is provided between the positioning rod and the shoe mold body, so that the operator can perform vacuum forming without removing the positioning rod.

[0009] A further improvement is that the retraction device includes several retraction holes formed on the shoe mold body, and the positioning rod is locked at the bottom of the contraction hole. The positioning rod is a telescopic positioning rod.

[0010] A further improvement is that the upper end of the positioning rod is also provided with a locking block device to facilitate the removal of the positioning rod.

[0011] A further improvement is that the locking device includes: a groove at the top of the positioning rod, a sleeve fitted on the groove, and an elastic connecting piece with a certain elasticity, one end connected to the sleeve and the other end connected to the positioning rod. The elastic connecting piece is arched in the middle to deform under pressure and thus avoid the heat-melting line.

[0012] A further improvement is that in step three, the upper can be woven in multiple layers to increase the overall thickness of the upper and enhance its overall support.

[0013] A further improvement is that in step three, multiple layers of weaving can be applied to specific areas of the shoe upper to increase the thickness and support of those areas without affecting overall breathability.

[0014] The advantages and beneficial effects of this invention are as follows: The production process is simple. The upper is woven and shaped, and then heat-pressed to set it before demolding to complete the upper manufacturing. There is no need for cutting and splicing, which greatly saves labor. In addition, the thickness of each part of the upper can be controlled, and the upper can be thickened according to actual needs to improve the support of the upper and avoid affecting breathability. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the main body of the shoe mold for the manufacturing process of seamless fully molded 3D string wire shoe upper according to the present invention; Figure 2 This is a schematic diagram of a shoe mold body with a shoe upper, illustrating a seamless, fully molded 3D string-wire shoe upper manufacturing process according to the present invention. Figure 3This is a schematic diagram illustrating the connection relationship between the positioning rod and the shoe mold in a seamless, fully molded 3D string-wire shoe upper manufacturing process according to the present invention. In the diagram: 1. Shoe mold body; 2. Positioning rod; 3. Retraction hole; 4. Slide groove; 5. Slide sleeve; 6. Elastic connecting piece; 7. Annular elastic layer. Detailed Implementation

[0016] 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.

[0017] like Figures 1-3 As shown, a seamless, fully molded 3D string-wire shoe upper manufacturing process: Step 1: Draw the design, confirming the pattern and size of the shoe upper; Step 2: Mold making. A shoe mold that conforms to the shape of the shoe upper is made according to the size of the shoe upper. Positioning rods 2 are installed on the shoe mold as needed. Step 3: Weaving. Fix the shoe mold with positioning rod 2 installed, and use a robotic arm to weave and wrap hot melt wire around the shoe mold until the shape of the shoe upper is woven on the shoe upper. Step 4: Wrapping. Wrap the finished shoe mold with an elastic sleeve and heat the elastic sleeve. Step 5: Vacuum forming, removing the air between the elastic sleeve and the shoe upper, so that the heated elastic sleeve is adsorbed onto the shoe mold, thereby heat-pressing the woven shoe upper; Step Six: Remove the sleeve, release the vacuum suction, and take off the elastic sleeve; Step 7: Finished product, remove the hot-pressed shoe upper; Step 8: Inspection. Inspect all parameters of the finished shoe upper. Step 9: Packaging. The finished shoe uppers are packaged for delivery to the next process. The shoe mold includes: a shoe mold body 1, and the shoe mold body 1 is provided with a number of positioning rods 2 according to actual needs.

[0018] In order for the hot melt wires to be able to connect together after being heated, the hot melt wires include: TPU wires, wherein the melting temperature range of the TPU wires is 150°C to 250°C.

[0019] To prevent the elastic sleeve from melting when heated, the elastic sleeve is a high-temperature resistant rubber sleeve.

[0020] In order to enable the elastic sleeve to heat press the hot melt line, the positioning rod 2 is threaded to the shoe mold body 1 for easy disassembly.

[0021] To improve production convenience, hot pressing can be performed without removing the positioning rod 2. A retraction device is provided between the positioning rod 2 and the shoe mold body 1 so that the operator can perform vacuum forming without removing the positioning rod 2. The retraction device includes: several retraction holes 3 opened on the shoe mold body 1. The positioning rod 2 is locked at the bottom of the shrink hole. The positioning rod 2 is a telescopic positioning rod 2.

[0022] To facilitate the removal of the positioning rod 2, which is compressed and contracted by the elastic sleeve, a locking device is provided at the upper end of the positioning rod 2 to facilitate its removal. The locking device includes: a sliding groove 4 at the top of the positioning rod 2, a sliding sleeve 5 sleeved on the sliding groove 4, and an elastic connecting piece 6 with a certain elasticity, which is connected to the sliding sleeve 5 at one end and to the positioning rod 2 at the other end. The elastic connecting piece 6 is arched in the middle to deform under pressure and avoid the heat-melting line. An annular elastic layer 7 is also provided in the contraction hole. The inner circle size of the annular elastic layer 7 is smaller than the size of the elastic connecting piece 6 after it is arched. This provides a certain elasticity to the positioning rod 2 after it is contracted, making it easier to remove the positioning rod 2.

[0023] To enhance the functionality of the shoe upper and allow manufacturers to make reasonable choices regarding support and breathability, step three involves weaving multiple layers into the shoe upper to increase its overall thickness and enhance its overall support. In step three, multiple layers of weaving can be applied to specific areas of the shoe upper to increase the thickness and support of those areas without affecting overall breathability.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions above are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A seamless, fully molded 3D string-wire shoe upper manufacturing process, characterized in that: Step 1: Draw the design, confirming the pattern and size of the shoe upper; Step 2: Mold making. A three-dimensional shoe mold that conforms to the shape of the shoe upper is made according to the size of the shoe upper. Positioning rods are installed on the three-dimensional shoe mold as needed. Step 3: Weaving. Fix the 3D shoe mold with positioning rods, and use a robotic arm to weave and wrap hot melt wire on the 3D shoe mold until the shape of the shoe upper is woven on the 3D shoe mold. Step 4: Wrapping. Wrap the 3D shoe mold with an elastic sleeve and heat the elastic sleeve. Step 5: Vacuum forming, removing the air between the elastic sleeve and the shoe upper, so that the heated elastic sleeve is adsorbed onto the three-dimensional shoe mold, thereby heat-pressing the woven shoe upper; Step Six: Remove the sleeve, release the vacuum suction, and take off the elastic sleeve; Step 7: Finished product, remove the hot-pressed shoe upper; Step 8: Inspection. Inspect all parameters of the finished shoe upper. Step Nine: Packaging involves packaging the finished shoe uppers to facilitate their transport to the next stage of the process. The three-dimensional shoe mold includes: a shoe mold body, which is provided with a number of positioning rods according to actual needs.

2. The seamless, fully molded 3D string-wire shoe upper manufacturing process according to claim 1, characterized in that: The hot melt wire includes a TPU wire, the TPU wire having a melting temperature range of 150°C to 250°C.

3. The seamless, fully molded 3D string-wire shoe upper manufacturing process according to claim 2, characterized in that: The elastic sleeve is a high-temperature resistant rubber sleeve.

4. The seamless, fully molded 3D string-wire shoe upper manufacturing process according to claim 1, characterized in that: The positioning rod is threaded to the shoe mold body for easy disassembly.

5. The seamless, fully molded 3D string-wire shoe upper manufacturing process according to claim 4, characterized in that: A retraction device is provided between the positioning rod and the shoe mold body so that the operator can perform vacuum forming without removing the positioning rod.

6. The seamless, fully molded 3D string-wire shoe upper manufacturing process according to claim 5, characterized in that: The retraction device includes: several retraction holes formed on the shoe mold body; the positioning rod is locked at the bottom of the contraction hole; and the positioning rod is a telescopic positioning rod.

7. The seamless, fully molded 3D string-wire shoe upper manufacturing process according to claim 6, characterized in that: The upper end of the positioning rod is also provided with a locking block device to facilitate the removal of the positioning rod.

8. The seamless fully molded 3D string-wire shoe upper manufacturing process according to claim 7, characterized in that: The locking device includes: a sliding groove at the top of the positioning rod, a sliding sleeve fitted on the sliding groove, and an elastic connecting piece with a certain elasticity, one end connected to the sliding sleeve and the other end connected to the positioning rod. The elastic connecting piece is arched in the middle to deform under pressure and thus avoid the hot melt line.

9. The seamless, fully molded 3D string-wire shoe upper manufacturing process according to claim 1, characterized in that: Step three involves weaving multiple layers into the upper to increase its overall thickness and enhance its support.

10. The seamless, fully molded 3D string-wire shoe upper manufacturing process according to claim 1, characterized in that: Step three involves weaving multiple layers in specific areas of the shoe upper to increase the thickness and support of those areas without affecting overall breathability.

Images