Process for covering cloth on surface of soft shoe sole with U-shaped curved surface

Abstract

The invention belongs to the technical field of shoemaking, and particularly discloses a process for covering the surface of a U-shaped curved surface soft sole with cloth. The process disclosed by the invention comprises the following steps: firstly, arranging a cloth sleeve on the upper surface of a mold, and tightening the cloth sleeve; then, first-time bonding and glue brushing are carried out; then, reversely buckling the shoe sole brushed with the glue on a mold, and pressing until the cloth and the shoe sole are firmly bonded; then, the outer side wall of the shoe edge is subjected to secondary bonding and glue brushing; then, the mold and the shoe sole are overturned and placed, and the tightening state of the cloth is relieved; then, the cloth covering the shoe edge is pressed along the outer side wall of the shoe edge brushed with the glue until the cloth is firmly bonded; and finally, the mold is taken away, and redundant cloth is cut off. According to the shoe sole cloth covering device, operation is simplified, cloth covering on the shoe sole is achieved, the covering cloth on the surface of the shoe sole is smooth and free of gaps, and the qualified rate of products is greatly increased. The surface cloth covering device can be widely applied to surface cloth covering of soft shoe soles.

Description

Technical Field

[0001] This invention belongs to the field of shoemaking technology, specifically relating to a fabric covering process for a U-shaped curved soft sole surface. Background Technology

[0002] The U-shaped curved soft sole combines soft materials and an arc-shaped structure to provide unique comfort and functionality. This design, used in performance athletic shoes and high-end running shoes, aims to improve foot pressure distribution, enhance support, and correct walking posture. Its structure is as follows: Figure 1 As shown, a shoe edge is provided on the upper surface of the sole, along the edge of the sole. like Figure 2 As shown, during the shoe manufacturing process, a fabric is typically applied to the upper surface of the U-shaped curved soft sole to form a layer resembling... Figure 3 The shoe sole shown is an example of a process that uses fabric bonded to the upper surface of the sole, replacing traditional painting or transfer methods. This solves color migration problems, enhances the clarity of color patterns, ensures stable adhesion, and improves the breathability and comfort of the sole.

[0003] However, in the actual overlay process, due to the soft nature of the sole, problems such as gaps at the edge, fabric misalignment, and wrinkling always occur when overlaying the sole's edge, resulting in a high defect rate for overlaid curved soft soles. Therefore, a U-shaped curved soft sole surface overlay process is needed to improve these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a U-shaped curved soft sole surface covering process. This process simplifies the operation through the use of molds, realizes the covering of the sole, and makes the sole surface covered with a smooth and gapless fabric, which greatly improves the product qualification rate.

[0005] To achieve the above objectives, the technical solution adopted by this invention is as follows: A process for covering the surface of a U-shaped curved soft shoe sole with fabric, the process comprising the following steps performed sequentially: S1. Place the fabric sleeve on the upper surface of the mold and stretch it taut; S2. Apply the first adhesive bonding; S3. Place the sole upside down on the mold and press until the fabric and sole are firmly bonded together. S4. Apply glue to the outer side of the shoe edge for the second time. S5. Turn the mold and sole over and place them to release the tension of the fabric; S6. Press the cloth covering the shoe edge along the outer side of the shoe edge with glue until it is firmly bonded. S7. Remove the mold and cut off any excess fabric.

[0006] As a limitation, the first adhesive application in step S2 is as follows: Apply glue to the fabric on the mold, apply glue to the upper surface of the sole and the inner wall of the shoe edge, or apply glue to the fabric on the mold and the upper surface of the sole and the inner wall of the shoe edge separately.

[0007] As a second limitation, in step S3, when the sole is flipped onto the mold, the parts of the two that fit together are matched in shape and size.

[0008] As a third limitation, when pressing in step S6, the cloth is first pressed tightly against the outer side of the shoe edge, and then force is applied from the side to press the cloth and shoe edge towards the side of the mold.

[0009] As a fourth limitation, the mold is made of plastic.

[0010] As a further limitation, the method for tightening the fabric in step S1 is to insert a nail into the mold by passing the fabric through the side of the mold.

[0011] The present invention, by adopting the above-described technical solution, achieves the following technical advancements compared to existing technologies: (1) The process of the present invention uses a mold to pre-tighten the fabric, which fundamentally solves the problem of fabric deviation and wrinkling in the traditional process, ensuring the precise fit of the fabric and the soft sole, making the fabric covering the sole surface flat and without gaps, significantly improving the breathability and uniformity of the sole and the long-term wearing comfort. (2) In the process of the present invention, the inner and outer walls of the shoe sole are treated with different adhesives in steps to ensure the bonding density of the shoe edge. Combined with the reverse pressing and side pressing process, the bonding strength is ensured, which greatly improves the product qualification rate. (3) In the process of the present invention, the upper surface of the mold is consistent with the shape of the soft shoe sole, which can ensure that the shoe sole and the mold are completely fitted together, avoiding the problem of uneven glue application or inaccurate positioning due to shape deviation; secondly, the precise placement of the shoe sole when it is reversed can accurately control the glue coverage area, which can prevent glue from overflowing and contaminating the working surface of the mold, and ensure that the glue layer thickness of the bonding surface is uniform, significantly improving the stability of the production process and the product yield, while reducing raw material waste and subsequent cleaning processes; (4) In the process of the present invention, a pressing method of first pressing and then side pressing is adopted. The cloth and the outer side of the shoe edge are initially bonded to form a reference surface. Then, the side of the mold is used as the force guide, which can accurately eliminate the displacement gap caused by the soft characteristics of the cloth. At the same time, the lateral pressure can effectively avoid the cloth wrinkles caused by traditional vertical pressing, and ensure that the adhesive layer penetrates evenly. This solves the problem of gaps in the cloth covering the shoe edge, and prevents the cloth from deviating through the rigid constraint of the side of the mold. Finally, the flat bonding of the cloth edge and the bonding strength are improved, which significantly reduces the defect rate. (5) The process of the present invention uses nails to fix the fabric in a plastic mold, which can achieve uniform tension of the fabric on the three-dimensional curved surface, avoid wrinkles or deformation caused by traditional gluing or clamping, and ensure that the shoe upper is completely attached to the mold; at the same time, the plastic mold has the advantages of being lightweight, low cost, and highly corrosion resistant, which is convenient for mass production and can adapt to the humid environment of the shoe workshop; this method reduces material waste, improves shaping accuracy, simplifies the operation process, and significantly improves production efficiency and product consistency.

[0012] This invention belongs to the field of shoe manufacturing technology. By using molds, the operation is simplified, and the fabric covering of the shoe sole is achieved, making the fabric covering on the sole surface flat and without gaps, which greatly improves the product qualification rate. Attached Figure Description

[0013] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of a U-shaped curved soft sole structure. Figure 2 A schematic diagram of a U-shaped curved soft sole covered with fabric; Figure 3 A schematic diagram of the structure of a U-shaped curved soft sole after it has been covered with fabric. Figure 4 This is a flowchart of an embodiment of the present invention; Figure 5 This is a schematic diagram of the mold structure in an embodiment of the present invention; Figure 6 This is a schematic diagram of the fabric sleeve being placed on the mold and stretched in an embodiment of the present invention; Figure 7 This is a schematic diagram showing the mold and shoe sole flipped over and the fabric tensioned in an embodiment of the present invention.

[0015] In the picture, 1. U-shaped curved soft sole, 2. Shoe edge, 3. Fabric, 4. Nails. Detailed Implementation

[0016] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention. Example

[0017] like Figure 4 As shown, this embodiment describes a fabric covering process for the surface of a U-shaped curved soft shoe sole 1, used to achieve the following: Figures 1 to 3 The fabric covering process for the structure shown includes the following steps performed sequentially: S1. Place the cloth 3 on the upper surface of the mold and stretch it taut.

[0018] In this embodiment, the mold is made of plastic, and its structure is as follows: Figure 5 As shown. To taut the fabric 3, after laying it flat on the upper surface of the mold, pull the fabric 3 taut from the side, and then insert the nail 4 into the mold through the fabric 3 from the side. A schematic diagram of the fabric 3 taut on the mold is shown below. Figure 6 As shown.

[0019] S2. Apply adhesive for the first bonding step.

[0020] During the initial adhesive application, adhesive can be applied to the fabric 3 on the mold, the upper surface of the sole, and the inner wall of the shoe edge 2. Alternatively, adhesive can be applied to the fabric 3 on the mold, the upper surface of the sole, and the inner wall of the shoe edge 2 simultaneously. In this embodiment, to ensure a good bonding effect, adhesive is applied to both surfaces to be bonded. To facilitate subsequent pressing, adhesive is not applied to the outer wall of the shoe edge 2 initially.

[0021] S3. Place the glued sole upside down onto the mold and press it until the cloth 3 and the sole are firmly bonded.

[0022] When the sole is flipped onto the mold, the parts that fit together must match in shape and size. Matching here means that the sole fits snugly onto the mold, and the edge of the shoe can fit tightly against the side of the mold. This ensures that the sole fits the mold perfectly and avoids problems such as uneven glue application or inaccurate positioning due to shape deviation.

[0023] S4. Apply adhesive to the outer side of the shoe edge 2 for the second time.

[0024] Next, the outer wall of the shoe edge 2 needs to be covered with fabric, so glue is applied to the outer wall of the shoe edge 2 beforehand.

[0025] S5. Turn the mold and the sole over and place them to release the tension of the cloth 3.

[0026] like Figure 7 As shown, after the mold and the sole are flipped and placed, the nail 4 is removed, and the cloth 3 attached to the side of the mold falls down under the action of gravity.

[0027] S6. Press the cloth 3 covering the shoe edge 2 along the outer side of the shoe edge 2 with glue until it is firmly bonded.

[0028] Since the mold matches the sole, the inner wall of the shoe edge 2 is tightly attached to the side of the mold. At this time, through the cloth 3, press along the outer wall of the shoe edge 2. When pressing, first press the cloth 3 tightly against the outer side of the shoe edge 2, and then apply force from the side to press the cloth 3 and the shoe edge 2 towards the side of the mold to ensure that the cloth 3 and the outer wall of the shoe edge 2 are firmly bonded.

[0029] S7. Remove the mold and cut off the excess fabric 3.

[0030] After the fabric is covered, remove the mold and cut off the excess fabric 3 to obtain the finished U-shaped curved soft sole 1.

[0031] In this embodiment, the mold is made of plastic, but the material can be adjusted according to the actual situation.

[0032] In addition, in this embodiment, the method used to tighten the cloth 3 is to nail it with nail 4. Other methods can also be used to tighten the cloth 3, as long as it is ensured that the cloth 3 can be tightened on the mold.

[0033] In summary, this embodiment simplifies the operation by using a mold, achieving the covering of the shoe sole with fabric, resulting in a smooth and gapless covering on the sole surface, which greatly improves the product qualification rate.

Claims

1. A fabric covering process for a U-shaped curved soft sole surface, characterized in that, The process includes the following steps performed sequentially: S1. Place the fabric sleeve on the upper surface of the mold and stretch it taut; S2. Apply the first adhesive bonding; S3. Place the sole upside down on the mold and press until the fabric and sole are firmly bonded together. S4. Apply glue to the outer side of the shoe edge for the second time. S5. Turn the mold and sole over and place them to release the tension of the fabric; S6. Press the cloth covering the shoe edge along the outer side of the shoe edge with glue until it is firmly bonded. S7. Remove the mold and cut off any excess fabric.

2. The U-shaped curved soft sole surface covering process according to claim 1, characterized in that, The first adhesive application in step S2 is as follows: Apply glue to the fabric on the mold, apply glue to the upper surface of the sole and the inner wall of the shoe edge, or apply glue to the fabric on the mold and the upper surface of the sole and the inner wall of the shoe edge separately.

3. The U-shaped curved soft sole surface covering process according to claim 1, characterized in that, In step S3, when the sole is flipped onto the mold, the parts that fit together match in shape and size.

4. The U-shaped curved soft sole surface covering process according to any one of claims 1 to 3, characterized in that, When pressing in step S6, first press the cloth tightly against the outer side of the shoe edge, and then apply force from the side to press the cloth and shoe edge towards the side of the mold.

5. The U-shaped curved soft sole surface covering process according to any one of claims 1 to 3, characterized in that, The mold is made of plastic.

6. The U-shaped curved soft sole surface covering process according to claim 5, characterized in that, The method for tightening the fabric in step S1 is to insert a nail into the mold by passing it through the fabric from the side of the mold.

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