Multi-color thermosetting vamp spinning method

Through the textile method of poly -color thermosetry upper, the mixing of isocyanate and polyethylene alcohol is used to combine the vertical and horizontal cross spraying of the spray component and the robotic arm, and laser cutting technology to solve the low efficiency of the traditional upper bonding method and the poor product quality. The problem of multi -color gradient and three -dimensional design sense is achieved, which improves production efficiency and wearable comfort.

CN119329106AActive Publication Date: 2025-01-21MAOTAI FUJIAN SOLES CO LTD
View PDF 7 Cites 0 Cited by

Patent Information

Application Number
CN202411353878.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-26
Publication Date
2025-01-21
Estimated Expiration
2044-09-26

AI Technical Summary

Technical Problem

The bonding method between the traditional upper and the sole is cumbersome, has low efficiency, high cost, and is not firm in the glue, has a short service life and poor product quality. At the same time, the existing technology is difficult to achieve a multi-color gradient and three-dimensional design upper, which cannot meet the needs of young consumers.

Method used

The textile method of multi -color thermal solution upper is adopted, and the vertical and horizontal cross -spray is used through the mixing of isocyanate and polymer alcohol.

Benefits of technology

It improves the upper textile speed and production efficiency, realizes multi-color gradient and three-dimensional design of the upper, and improves wearing comfort and product quality.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119329106A_ABST
    Figure CN119329106A_ABST
Patent Text Reader

Abstract

The invention relates to a multi-color thermosetting vamp spinning method which comprises the following steps: adding an isocyanate raw material A into a first heat preservation device for heat preservation, adding a polyhydric alcohol raw material B into a second heat preservation device for heat preservation, uniformly mixing isocyanate liquid and polyhydric alcohol, filling a material storage device connected with a material spraying assembly II with a colored curing agent, and spraying a material spraying assembly II into the material storage device, the control module sends an instruction, the first material spraying assembly and the second material spraying assembly are matched with the mechanical arm, the first material spraying assembly and the second material spraying assembly conduct spraying around the shoe tree, and the control module sends the instruction to the laser module for trimming. The material spraying assembly is a flat multi-nozzle device, a plurality of threads can be sprayed out at the same time through a transverse nozzle, the vamp spinning speed is increased, and the production efficiency is improved by 30% or above; the polyalcohol and the curing agent can both have colors and can be freely arranged and crossed to form gradient colors, visual impact of rich colors is achieved, color matching is more fashionable, and extreme personality and vitality are shown.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The invention relates to the field of shoes, in particular to a method for weaving a multi-color thermosetting shoe upper. Background Art

[0002] Traditional shoes are usually made of an upper bonded to a sole by glue, and the bonding of the sole and the upper requires manual bonding. This manual bonding method is cumbersome, time-consuming and labor-intensive, has low production efficiency, and high labor costs. In addition, due to uneven manual force and large human operating errors, the defective product rate is high. In addition, the glue is not firmly bonded and is prone to degumming and separation when exposed to water, resulting in a short service life of the shoes and poor product quality.

[0003] Referring to the invention patent with application number 2021800668020, a method for manufacturing textile materials, especially shoe uppers, is disclosed. The application of the molten polymer compound to the forming bracket is achieved by means of a nozzle, which has an outflow opening for the molten polymer compound and a plurality of air exhaust openings arranged around the outflow opening, from which compressed air is loaded onto the outflowing polymer compound in such a way that the molten polymer compound flowing out of the nozzle is applied to the forming bracket as a spiral filament. This patented technical solution overcomes the difficulty of traditional upper and sole stitching technology, but there are still shortcomings. This type of upper has a single color and unfashionable color matching, which cannot meet the needs of young consumers. In addition, the equipment cannot be freely cut, the shape of the upper opening is relatively monotonous, lacks a three-dimensional design sense, and has low wearing comfort. Summary of the invention

[0004] The present invention provides a multi-color thermosetting shoe upper weaving method to solve the problems of the above-mentioned shoe upper having unfashionable color matching, low attractiveness, lack of three-dimensional design sense in the opening, and low wearing comfort.

[0005] The present invention adopts the following technical solution:

[0006] A multi-color thermosetting shoe upper weaving method comprises the following steps:

[0007] Step 1, adding isocyanate raw material A into a first heat preservation device and heat preservation until the isocyanate is in liquid state;

[0008] Step 2, adding the polyol raw material B into a second heat preservation device for heat preservation until the polyol is in a liquid state, and the polyol may be colored;

[0009] Step 3, the isocyanate liquid of step 1 and the polyol liquid of step 2 are respectively transported to the front end of the spraying component 1 through a gear pump through an insulated conveying pipeline to be evenly mixed and ready for spraying;

[0010] Step 4, loading a colored curing agent into a storage device connected to the spraying assembly 2, wherein the temperature of the curing agent solution is 70° C.-100° C., preferably 85° C., for use in spraying;

[0011] Step 5, the control module sends a command to the robotic arm to grab the shoe last with the sole at the bottom to the vicinity of the spraying assembly, and the robotic arm can drive the shoe last to rotate in multiple directions;

[0012] Step 6, the control module sends an instruction, the spraying component 1 and the spraying component 2 cooperate with the robot arm, the spraying component 1 and the spraying component 2 spray around the shoe last, the spraying component 1 synchronously sprays a longitudinal weaving line and at least two transverse weaving lines, the transverse weaving lines synchronously cross the longitudinal weaving lines, and the spraying component 2 synchronously sprays the curing agent on the weaving lines, and the curing agent accelerates the curing and forming of the raw materials. During the spraying process, the control module sends an instruction to the switch, and the switch changes the spraying pressure to form a gradient color;

[0013] Step 7, the control module sends instructions to the laser module for trimming. After the sole is scanned by 3D vision, the information is stored and the trimming position is determined. Then, after the robotic arm puts the sole into the cavity, the instrument automatically identifies the model number, matches the stored information, selects the trimming position and trims.

[0014] Furthermore, the above-mentioned polyol is one or both of polyester diol and polyether diol, and preferably the polyol is polyester diol.

[0015] Furthermore, the above-mentioned polyol raw material B is obtained by uniformly mixing polyether polyol, epoxy lacquer phenol, graphene oxide and catalyst in a mass ratio of 85-90:5-10:1-3:0.1-0.3.

[0016] Furthermore, the polyisocyanate is one or both of aliphatic diisocyanate and aromatic diisocyanate, and preferably the polyisocyanate is aliphatic diisocyanate.

[0017] Furthermore, the catalyst is one or more of an organic tin compound or a titanate compound, and preferably the catalyst is a titanate compound.

[0018] Furthermore, the curing agent of the second spray of the spray assembly is a polyamine catalyst.

[0019] Furthermore, the above-mentioned spray assembly includes a longitudinal nozzle and at least two transverse nozzles, preferably 5 nozzles, a spray hole for spraying is provided at the axis of the nozzle, and a plurality of air holes are distributed around the spray hole. The axis of the air hole is not parallel to the axis of the spray hole. The air sprayed from the air hole causes the polymer flowing out of the spray hole to be in the shape of strips or spirals. The spray device simultaneously sprays at least two transverse weaving lines from at least two holes to form a webbing with a width of 0.5mm to 20mm, and the width of the webbing is preferably 8mm.

[0020] Furthermore, the thickness of the strip-shaped polymer flowing out of the above-mentioned nozzle hole is 0.21 mm to 1.0 mm, and preferably the thickness of the polymer is 0.35 mm.

[0021] Furthermore, the air pressure of the gear pump is 0.2 MPa to 0.7 MPa, and preferably the air pressure is 0.7 MPa.

[0022] Furthermore, the above-mentioned laser module cutting is to cut the edge of the shoe opening into different arcs; the above-mentioned laser module cutting is to cut an opening at the edge of the shoe opening; the above-mentioned laser module cutting is to cut small holes of different shapes on the upper.

[0023] Further, the sole comprises at least one of thermoplastic polyurethane sole, polyurethane foam sole, ETPU sole, EVA foam sole, rubber-plastic foam sole, rubber sole and PVC sole, i.e., a combination sole comprising two soles combined together, such as a combination sole in which an EVA foam sole and a rubber sole are bonded together.

[0024] Furthermore, the sole area in contact with the upper needs to be surface treated to form a sticky adhesive surface. The sole area in contact with the upper is an EVA foam sole, which needs to be cleaned, brushed with a treatment agent, dried, brushed with glue, and dried before it can be installed on the shoe last; before spraying the shoe, the surface needs to be preheated with hot air at a temperature of 45°C-60°C, preferably 55°C.

[0025] Furthermore, the sole area in contact with the upper is a polyurethane foam sole or an ETPU sole, which needs to be brushed with a treatment agent and dried before it can be installed on the shoe last; before spraying the shoe, the surface needs to be preheated by spraying hot air at a temperature of 45°C-60°C, preferably 55°C.

[0026] Furthermore, the sole area in contact with the upper is a TPU sole, which needs to be brushed with a treatment agent, dried, brushed with glue, and dried before it can be installed on the shoe last; before spraying the shoe, the surface needs to be preheated by spraying hot air at a temperature of 60°C-80°C, preferably 70°C.

[0027] Furthermore, the sole area in contact with the upper is a rubber sole, which needs to be brushed with a treatment agent, dried, brushed with glue, and dried before it can be installed on the shoe last; before spraying the shoe, the surface needs to be preheated by spraying hot air at a temperature of 60°C-90°C, preferably 75°C.

[0028] Furthermore, if the surface of the sole area in contact with the upper is covered with PUR material and / or an adhesive film, it needs to be preheated by spraying hot air at a temperature of 60°C-90°C before spraying the shoe.

[0029] Furthermore, the area of ​​the sole in contact with the upper has a height of 3mm-15mm, preferably 5mm.

[0030] It can be seen from the above description of the present invention that, compared with the prior art, the present invention has the following advantages:

[0031] 1. The spray assembly of the present application is a flat multi-nozzle device. The horizontal nozzle can spray multiple lines at the same time, and the vertical nozzle moves up and down to realize up and down swing spraying. The weaving lines are connected vertically and horizontally to speed up the weaving speed of the shoe upper and improve the production efficiency by more than 30%.

[0032] 2. The polyols and curing agents of the present application can both be colored and can be freely arranged to cross each other to form gradient colors, which have a more colorful visual impact and a more fashionable color scheme, showing extreme personality and vitality.

[0033] 3. The raw material of the present application is a mixture of isocyanate and polyol, and the curing agent is used to accelerate the curing and forming of the raw material in a short time, and the shoe upper weaving speed is fast, which is suitable for mass production.

[0034] 4. This application uses laser cutting to achieve multi-shape design of the edge position, free cutting, adapting to the foot shapes of different users, and good structural design flexibility.

[0035] 5. The thermoplastic material of the present application is cross-linked, and the material has better toughness. It can use finer spinneret holes and larger gaps. It can also provide good mechanical properties and better air permeability, making it less likely to produce foot odor in the shoes and more comfortable. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the structure in which the transverse weaving lines and the longitudinal weaving lines of this application intersect Figure 1 .

[0037] Figure 2 This is a schematic diagram of the structure in which the transverse weaving lines and the longitudinal weaving lines of this application intersect Figure 2 .

[0038] Figure 3 This is a schematic diagram of the structure of the melting device, robotic arm and storage device of the present application.

[0039] Figure 4 This is a schematic diagram of the structure of the multi-nozzle device of the present application.

[0040] Figure 5 This is a schematic diagram of the structure in which the transverse weaving lines and the longitudinal weaving lines of this application intersect Figure 3 . DETAILED DESCRIPTION

[0041] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0042] Example 1

[0043] A multi-color thermosetting shoe upper weaving method comprises the following steps:

[0044] Step 1, refer to Figure 3 , adding the isocyanate raw material A into the first heat preservation device 1 and heat preservation until the isocyanate is in liquid state;

[0045] Step 2, refer to Figure 3 , adding the polyol raw material B into the second heat preservation device 2 for heat preservation until the polyol is in liquid form, and the polyol may be colored;

[0046] Step 3, refer to Figure 3 The isocyanate liquid of step 1 and the polyol of step 2 are respectively transported to the front end of the spray component 3 through the insulated delivery pipe 11 by a gear pump to be evenly mixed and ready for spraying. The front end of the spray component 3 is connected to a heating module 42;

[0047] Step 4, a colored curing agent is loaded into the storage device 4 connected to the spraying component 2 42. The temperature of the curing agent solution is 70°C-100°C, preferably 85°C. The curing agent can accelerate the reaction between raw material A and raw material B, and also react with raw material A to promote the curing reaction of isocyanate raw material A to be sprayed for use;

[0048] Step 5, the control module 12 sends a command to the robot arm 5 to grab the shoe last 51 with the sole 52 at the bottom to the vicinity of the spraying assembly, and the robot arm 5 can drive the shoe last 51 to rotate in multiple directions;

[0049] Step 6, refer to Figure 1-4 , the control module 12 sends instructions, the spraying component 1 3 and the spraying component 2 42 cooperate with the mechanical arm 5, the spraying component 1 3 and the spraying component 2 42 spray around the shoe last 51, the spraying component 1 3 synchronously sprays a longitudinal weaving line and at least two transverse weaving lines, the transverse weaving lines synchronously cross the longitudinal weaving lines, and the spraying component 2 42 synchronously sprays the curing agent on the weaving lines, and the curing agent accelerates the curing and molding of the raw materials. During the spraying process, the control module 12 sends instructions to the switch, and the switch changes the spraying pressure to form a gradient color;

[0050] Step 7, the control module 12 sends a command to the laser module for trimming. After the sole 52 is scanned by 3D vision, the information is stored and the trimming position is determined. Then, after the robotic arm puts the sole 52 into the cavity, the instrument automatically identifies the model number, matches the stored information, selects the trimming position and trims.

[0051] The above-mentioned polyol raw material B is obtained by uniformly mixing polyether polyol, epoxy lacquer phenol, graphene oxide and catalyst in a mass ratio of 89:8:2.2:0.15.

[0052] The above polyisocyanate is hexamethylene diisocyanate.

[0053] The above catalyst is a titanate compound.

[0054] The curing agent sprayed by the spraying component 2 42 is a polyamine catalyst.

[0055] The shoe last 51 with the sole 52 at the bottom means that the sole 52 is fixed to the bottom of the shoe last 51, and the sole 52 will not fall off when the robot arm 5 rotates in multiple directions; the sole 52 is fixed to the shoe last 51 by hot melt adhesive, and an air pipe is installed on the shoe last 51 to fix the sole 52 by negative pressure.

[0056] Reference Figure 4 The above-mentioned spray assembly 3 includes a longitudinal nozzle 31 and three transverse nozzles 32. A spray hole 30 for spraying is provided at the axis of the nozzle. A plurality of air holes 301 are distributed around the spray hole 30. The axis of the air hole 301 is not parallel to the axis of the spray hole 30. The air ejected from the air hole 301 causes the polymer flowing out of the spray hole 30 to be in the shape of strips.

[0057] The thickness of the strip-shaped polymer flowing out of the nozzle 30 is 0.21-1.0 mm, and preferably the thickness of the strip-shaped polymer is 0.3 mm to 0.6 mm.

[0058] The curing agent sprayed by the spraying component 2 42 is a polyamine catalyst.

[0059] Reference Figure 1 and 2 The above-mentioned spraying component 3 synchronously sprays a longitudinal weaving line and three transverse weaving lines in a wave-like shape. First, three transverse weaving lines are sprayed out horizontally from three spray holes 30, and then another spray hole 30 swings the spray material up and down to spray out an oblique straight line (i.e., the longitudinal weaving line) synchronously connecting the above-mentioned three transverse weaving lines. The slope of the oblique straight line is related to the running speed. The slower the speed, the denser the squares formed.

[0060] The spray assembly sprays synchronously through three holes to form a webbing with a width of 0.5 mm to 20 mm, and preferably the webbing width is 8 mm.

[0061] The air pressure of the gear pump is 0.2 MPa to 0.7 MPa, and the preferred air pressure is 0.7 MPa.

[0062] The laser module cutting mentioned above is to cut the edge of the shoe opening into different arcs; the laser module cutting mentioned above is to cut an opening at the edge of the shoe opening to make the shoe opening wider, which is beneficial for feet with thick insteps; the laser module cutting mentioned above is to cut small holes of different shapes on the upper. You can wear shoelaces or elastic bands to make the upper closer to your feet.

[0063] The sole 52 is a composite sole 52 of an ETPU sole 52 and a thermoplastic polyurethane sole 52, the forefoot area of ​​the sole 52 in contact with the upper is the ETPU sole 52, the area of ​​the sole 52 in contact with the upper is 7mm high, the heel area of ​​the sole 52 in contact with the upper is the thermoplastic polyurethane sole 52, the area of ​​the sole 52 in contact with the upper is treated with a TPU treatment agent, dried, brushed with glue, and dried, and then installed on the shoe last 51; before spraying the shoe, the spray gun 43 sprays 70°C hot air toward the area of ​​the sole 52 in contact with the upper.

[0064] After step 5 is completed, a complete shoe is obtained, with the upper and the sole 52 bonded together.

[0065] Example 2

[0066] A multi-color thermosetting shoe upper weaving method, characterized in that it comprises the following steps:

[0067] Step 1, refer to Figure 3 , adding the isocyanate raw material A into the first heat preservation device 1 and heat preservation until the isocyanate is in liquid state;

[0068] Step 2, refer to Figure 3 , adding the polyol raw material B into the second heat preservation device 2 for heat preservation until the polyol is in liquid form, and the polyol may be colored;

[0069] Step 3, refer to Figure 3 The isocyanate liquid of step 1 and the polyol of step 2 are respectively transported to the front end of the spraying component 3 through the insulated conveying pipe 11 by a gear pump to be evenly mixed and ready for spraying. The front end of the spraying component is connected to a heating module 42;

[0070] Step 4, refer to Figure 3 , a colored curing agent is loaded into the storage device 4 connected to the spraying component 2 42. The temperature of the curing agent solution is 70°C-100°C, preferably 85°C. The curing agent can accelerate the reaction of raw materials A and raw materials B, and also react with raw material A to promote the curing reaction of isocyanate raw material A to be faster, and then it is sprayed for use;

[0071] Step 5, the control module 12 sends a command to the robot arm 5 to grab the shoe last 51 with the sole 52 at the bottom to the vicinity of the spraying assembly, and the robot arm 5 can drive the shoe last 51 to rotate in multiple directions;

[0072] Step 6, refer to Figure 1-4, the control module 12 sends instructions, the spraying component 1 3 and the spraying component 2 42 cooperate with the mechanical arm 5, the spraying component 1 3 and the spraying component 2 42 spray around the shoe last 51, the spraying component 1 3 synchronously sprays a longitudinal weaving line and at least two transverse weaving lines, the transverse weaving lines synchronously cross the longitudinal weaving lines, and the spraying component 2 42 synchronously sprays the curing agent on the weaving lines, and the curing agent accelerates the curing and molding of the raw materials. During the spraying process, the control module 12 sends instructions to the switch, and the switch changes the spraying pressure to form a gradient color;

[0073] Step 7, the control module 12 sends a command to the laser module for trimming. After the sole 52 is scanned by 3D vision, the information is stored and the trimming position is determined. Then, after the robotic arm puts the sole 52 into the cavity, the instrument automatically identifies the model number, matches the stored information, selects the trimming position and trims.

[0074] The above-mentioned polyol raw material B is obtained by uniformly mixing polyester polyol, epoxy lacquer phenol, graphene oxide and catalyst in a mass ratio of 85:5:3:0.1.

[0075] The above polyisocyanate is diphenylmethane diisocyanate.

[0076] The above catalyst is an organotin compound.

[0077] The curing agent sprayed by the spraying component 2 42 is a polyamine catalyst.

[0078] The shoe last 51 with the sole 52 at the bottom means that the sole 52 is fixed at the bottom of the shoe last 51, and the sole 52 will not fall off when the robot arm 5 rotates in multiple directions; the sole 52 is fixed to the shoe last 51 by a pin, and an air pipe is installed on the shoe last 51 to fix the sole 52 by negative pressure.

[0079] The above-mentioned spray assembly 3 includes a longitudinal nozzle 31 and five transverse nozzles 32. A spray hole 30 for spraying is provided at the axis of the nozzle. A plurality of air holes 301 are distributed around the spray hole 30. The axis of the air hole 301 is not parallel to the axis of the spray hole 30. The air sprayed from the air hole 301 causes the polymer flowing out of the spray hole 30 to be in the shape of strips.

[0080] The thickness of the strip-shaped polymer flowing out of the above-mentioned nozzle 30 is 0.21mm-1.0mm, and preferably the thickness of the strip-shaped polymer is 0.21mm-0.3mm.

[0081] Reference Figure 5The spray assembly sprays one longitudinal weave and five transverse weaves synchronously. Five spray holes 30 spray five transverse weaves horizontally first, and then another spray hole 30 swings up and down to spray an oblique straight line (i.e., longitudinal weave) synchronously connecting the five transverse weaves. The slope of the oblique straight line is related to the running speed. The slower the speed, the denser the grid. The spray assembly sprays synchronously from five holes to form a webbing with a width of 0.5mm to 20mm, and the preferred webbing width is 12mm.

[0082] The air pressure of the gear pump is 0.2Mpa to 0.7Mpa, and preferably 0.4Mpa to 0.6Mpa.

[0083] The laser module cutting mentioned above is to cut the edge of the shoe opening into different arcs; the laser module cutting mentioned above is to cut an opening at the edge of the shoe opening to make the shoe opening wider, which is beneficial for feet with thick insteps; the laser module cutting mentioned above is to cut small holes of different shapes on the upper. You can wear shoelaces or elastic bands to make the upper closer to your feet.

[0084] The sole 52 is a composite sole 52 of an EVA foam sole 52 and a rubber sole 52, the toe region of the sole 52 in contact with the upper is rubber, and the other regions in contact with the upper are EVA foam soles 52, and the region of the sole 52 in contact with the upper has a height of 5mm. The toe region of the sole 52 in contact with the upper is treated with a rubber treatment agent containing 1.1% (mass fraction) of B powder, and the region of the EVA foam sole 52 in contact with the upper is treated with an irradiation-free treatment agent, and then the composite sole 52 is put into an assembly line, dried at 50°C, and then the region in contact with the upper is brushed with glue and dried, and finally the composite sole 52 is installed on a shoe last 51; before spraying the upper, a spray gun 43 sprays 60°C hot air toward the region of the sole 52 in contact with the upper.

[0085] After step 5 is completed, a complete shoe is obtained, with the upper and the sole 52 bonded together.

[0086] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A method for weaving a multi-color thermosetting shoe upper, characterized in that: The following steps are involved: Step 1, adding isocyanate raw material A into a first heat preservation device and heat preservation until the isocyanate is in liquid state; Step 2, adding the polyol raw material B into a second heat preservation device for heat preservation until the polyol is in a liquid state, and the polyol may be colored; Step 3, the isocyanate liquid of step 1 and the polyol of step 2 are respectively transported to the front end of the spraying component 1 through a gear pump through an insulated conveying pipeline and mixed evenly for spraying; Step 4, loading a colored curing agent into a storage device connected to the spraying assembly 2, wherein the temperature of the curing agent solution is 70° C.-100° C., and is ready for spraying; Step 5, the control module sends a command to the robotic arm to grab the shoe last with the sole at the bottom to the vicinity of the spraying assembly, and the robotic arm can drive the shoe last to rotate in multiple directions; Step 6, the control module sends an instruction, the spraying component 1 and the spraying component 2 cooperate with the robot arm, the spraying component 1 and the spraying component 2 spray around the shoe last, the spraying component 1 synchronously sprays a longitudinal weaving line and at least two transverse weaving lines, the transverse weaving lines synchronously cross the longitudinal weaving lines, and the spraying component 2 synchronously sprays the curing agent on the weaving lines, and the curing agent accelerates the curing and forming of the raw materials. During the spraying process, the control module sends an instruction to the switch, and the switch changes the spraying pressure to form a gradient color; Step 7, the control module sends instructions to the laser module for trimming. After the sole is scanned by 3D vision, the information is stored and the trimming position is determined. Then, after the robotic arm puts the sole into the cavity, the instrument automatically identifies the model number, matches the stored information, selects the trimming position and cuts.

2. A multi-color thermosetting shoe upper weaving method as claimed in claim 1, characterized in that: The polyol is polyester diol and / or polyether diol.

3. A multi-color thermosetting shoe upper weaving method as claimed in claim 1, characterized in that: The polyol raw material B is obtained by uniformly mixing polyether polyol, epoxy lacquer phenol, graphene oxide and catalyst in a mass ratio of 85-90:5-10:1-3:0.1-0.

3.

4. A multi-color thermosetting shoe upper weaving method as claimed in claim 1, characterized in that: The polyisocyanate is aliphatic diisocyanate and / or aromatic diisocyanate.

5. A multi-color thermosetting shoe upper weaving method as claimed in claim 1, characterized in that: The catalyst is one or more of an organic tin compound or a titanate compound.

6. A multi-color shoe upper weaving method as claimed in claim 1, characterized in that: The spray assembly includes a longitudinal nozzle and at least two transverse nozzles. A spray hole for spraying is provided at the axis of the nozzle. A plurality of air holes are distributed around the spray hole. The axis of the air hole is not parallel to the axis of the spray hole. Air sprayed from the air hole causes the polymer flowing out of the spray hole to be in a strip or spiral shape. The spray device simultaneously sprays at least two transverse weaving lines from at least two holes to form a webbing with a width of 0.5 mm to 20 mm.

7. A method for weaving a multi-color thermosetting shoe upper as claimed in claim 1, characterized in that: The laser module cutting is to cut the edge of the shoe opening into different arcs; the laser module cutting is to cut an opening at the edge of the shoe opening; the laser module cutting is to cut small holes of different shapes on the upper.

8. The multi-color upper weaving method according to claim 1, characterized in that: The area of ​​the sole that contacts the upper needs to be surface treated to form a sticky bonding surface.

9. The multi-color shoe upper weaving method according to claim 1, characterized in that: The area of ​​the sole that contacts the upper is 3mm-15mm high.

Citation Information

Patent Citations

  • Space-saving vamp glue spraying device and automatic vamp glue spraying method

    CN104146442A

  • Last system for articles with braided components

    CN110228188A

  • Improved PU sole manufacturing technological process

    CN112917964A

  • Automatic integral forming shoe manufacturing method

    CN113320202A

  • Three-dimensional printing of multi-layer upper

    CN117137230A