Novel shoe toe cap / heel shaping process

Abstract

The invention discloses a novel shoe toe cap / heel shaping process, and relates to the technical field of shoe shaping, and the novel shoe toe cap / heel shaping process comprises the following steps: uniformly applying a hardening agent on the back of leather; applying white glue to the periphery of the corner, and heating and drying in an oven; the toe lasting machine is adjusted to be in the working state conforming to the shoes, the sizes of the left foot and the right foot are checked after upper climbing and last sticking are completed, and the left foot and the right foot need to be matched; pulling a waist side; and adjusting the heel lasting machine to a working state conforming to the shoe, and making a heel lasting according to a midsole line printing position, so that the heel needs to be round and smooth, and the shoe last is not empty. According to the process, the procedures are simpler, the shoe toe and the shoe heel are more beautiful, portable and environment-friendly in shaping and good in supporting strength, the time efficiency is improved, the stability of the shoe is better, the quality problems of transparent marks / long corners and the like are avoided, and the shaping of the head lining and the rear lining mainly plays a role in protecting toes and heels; according to the novel process, material blanking and sewing machine manual and vamp shaping procedures are omitted, and a better shaping effect can be achieved, so that the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of shoe shaping, in particular to a new process for shoe toe / heel shaping. Background Art

[0002] Shoe molds usually refer to molds for sports shoes, casual shoes, beach shoes, slippers, rubber shoes and other footwear. Molds refer to various molds and tools used in industrial production to obtain the required products by injection molding, blow molding, extrusion, die casting or forging molding, smelting, stamping, stretching and other methods. In order to ensure the integrity of the shoe shaping and its fit with the user's feet, the corresponding shoe toe and heel shaping molds are needed to shape the toe and heel inside the shoe.

[0003] Traditional Hongbao shoe technology uses front / back Hongbao materials that are cut and matched, then edge-cut and polished, and then formed by high-temperature hot pressing, activated, and then cold-formed. The process is complicated, and if the forming temperature is not enough (the Hongbao material is not fully activated) or the heel forming machine mold does not match the curvature of the last, it is easy to cause quality problems such as through marks and long corners. Summary of the invention

[0004] The purpose of the present invention is to provide a new process for shaping the toe / heel of shoes to solve the problem that the traditional Hongbao shoe technology is to cut and match the front / back Hongbao materials, grind the edges, and shape them by high-temperature hot pressing, and then activate and cold shape them. The process is complicated, and if the shaping temperature is not enough or the heel shaping machine mold does not match the curvature of the last, it is easy to cause quality problems such as through marks and long corners.

[0005] The new process for shaping the toe and heel includes the following steps:

[0006] Step 1: First, put on the shoelaces during molding production, and use a small brush to evenly apply the hardener on the back of the upper and the fixed position of the heel;

[0007] Step 2: Before the upper enters the oven, apply white latex around the corners and dry them in the oven at 80℃-85℃ for 5-6 minutes.

[0008] Step 3: Adjust the upper machine to the working state suitable for this shoe. After the shoe is put into the last, check that the upper should be properly fitted on the last. The left and right feet need to be matched. The toe and heel should be fitted on the last after the shoe is fitted.

[0009] Step 4: Pull the waist, use waist pliers to pull the upper corner leather material to align it with the midsole rabbet printing line;

[0010] Step 5: Hit the heel. Adjust the heel machine and use the tightener. Adjust the correct working state and hit the heel according to the marked position. The heel should be round and fit the last without any gaps.

[0011] Step 6: Draw lines. Adjust the pressure of the line drawing machine to 2.0-2.5KG. Place the shoe last in the line drawing mold and fit it tightly with the outsole. Draw lines on the shoe surface according to the curvature of the outsole edge, which will serve as a reference for subsequent roughening, treatment agent application, glue application and outsole application.

[0012] Step 7: Roughening. Roughening is to ensure the tension after the surface and bottom are adhered. Roughening is only for specific materials. Genuine leather must be roughened. The surface layer of the second layer of leather must be removed to expose the fiber layer of the genuine leather. The surface of the first layer of leather must be roughened evenly according to the line position. Different specifications of sandpaper are used for roughening according to the material.

[0013] Step 8: Apply treatment agent and glue. Apply treatment agent according to the rough lines. The leather material should be applied with genuine leather treatment agent. The parts where the inner core of the outsole and the upper are attached need to be applied with treatment agent and baked in the oven. Add appropriate amount of hardener to the treatment agent and glue. Apply the first primer glue and bake in the oven, then apply the second glue and bake in the oven. The glue on the surface and the bottom is tightly adhered together to ensure that the surface and the bottom have good tensile force.

[0014] Step nine, fitting the upper and sole. The shoes need to be fitted after the glue is cremated and they come out of the oven. Fit the upper and the outsole together according to the glue rubbing position. The shoes need to be fitted when they come out of the oven on the assembly line and are no longer than 1 meter. The temperature will drop if the length exceeds the limit, which will affect the adhesion of the glue. First, fit the toe, then the heel and both sides. The outsole should just cover the glue line. The sole should not be skewed or shaken, and the sole fitter must wear gloves throughout the process to prevent the grease on the hands from contacting the glued surface and affecting the pulling force.

[0015] Step 10: Pressing: Use the correct bottom pressing die to press the dough to make the dough fully adhere to the bottom. The pressing pressure is 35KG and the time is 12-15 seconds.

[0016] Step 11, freezing and last removal, the freezer temperature is 0-5℃, the time is 5-6 minutes.

[0017] As a further solution of the present invention: according to step six, the marking must ensure that the front and rear center points of the surface and bottom are aligned and cannot be skewed. After marking, compare the left foot and the right foot to ensure that the pair is consistent.

[0018] As a further solution of the present invention: according to step seven, the roughening is performed using sandpaper, and sandpaper of different specifications is used according to the material.

[0019] As a further solution of the present invention: according to step eight, drying is required immediately after applying the treatment agent and glue, and the oven temperature is 55-65° C. and the time is 3.5-4.5 minutes.

[0020] As a further solution of the present invention: according to step ten, the machine needs to be kept clean to prevent the shoes from being contaminated, and light-colored shoes need to be covered with plastic bags during the pressing process.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention uses this process to simplify the process, make the shaping of the shoe toe and heel more beautiful, light, environmentally friendly and have good support strength, increase the timeliness, save costs, make the stability better, avoid the occurrence of quality problems such as through marks / long corners, and the shaping of the head lining and the back lining mainly plays a role in protecting the toes and heels. The new process method saves material punching, sewing machine manual and upper shaping processes, and can achieve better shaping effects, thereby reducing labor costs. DETAILED DESCRIPTION

[0023] In an embodiment of the present invention, a new process for shaping the toe / heel of a shoe is provided, characterized in that:

[0024] The new process for shaping the toe and heel includes the following steps:

[0025] Step 1: First, put on the shoelaces during molding production, and use a small brush to evenly apply hardener on the back of the upper and the fixed position of the heel. The hardener is used to increase the hardness, wear resistance, penetration resistance and water resistance of the shoes, and improve the service life of the shoes. The amount of hardener used depends on different shoe types and materials.

[0026] Step 2: Before the upper enters the oven, apply white latex around the corners and dry them in the oven. The oven temperature is 80℃-85℃ for 5-6 minutes. If the time is too long, the toe cap will harden and crack easily.

[0027] Step 3: Adjust the upper machine to the working state suitable for this shoe. After the shoe is put into the last, check that the upper should be properly fitted on the last. The left and right feet need to be matched. The toe and heel should be fitted on the last after the shoe is fitted.

[0028] Step 4: Pull the waist, use waist pliers to pull the upper corner leather material to align it with the midsole rabbet printing line;

[0029] Step 5: Hit the heel. Adjust the heel machine and use the tightener. Adjust the correct working state and hit the heel according to the marked position. The heel should be round and fit the last without any gaps.

[0030] Step 6: Draw lines. Adjust the pressure of the line drawing machine to 2.0-2.5KG. Place the shoe last in the line drawing mold and fit it tightly with the outsole. Draw lines on the shoe surface according to the curvature of the outsole edge, which will serve as a reference for subsequent roughening, treatment agent application, glue application and outsole application.

[0031] Step 7: Roughening. Roughening is to ensure the tension after the surface and bottom are adhered. The genuine leather must be roughened. The surface layer of the second layer of leather must be removed to expose the fiber layer of the genuine leather. The surface of the first layer of leather must be roughened evenly according to the line position. Different specifications of sandpaper are used for roughening according to the material.

[0032] Step 8: Apply treatment agent and glue. Apply treatment agent according to the rough lines. The leather material should be applied with genuine leather treatment agent. The parts where the inner core of the outsole and the upper are attached need to be applied with treatment agent and baked in the oven. Add appropriate amount of hardener to the treatment agent and glue. Apply the first primer glue and bake in the oven, then apply the second glue and bake in the oven. The glue on the surface and the bottom is tightly adhered together to ensure that the surface and the bottom have good tensile force.

[0033] Step nine, fitting the upper and sole. The shoes need to be fitted after the glue is cremated and they come out of the oven. Fit the upper and the outsole together according to the glue rubbing position. The shoes need to be fitted when they come out of the oven on the assembly line and are no longer than 1 meter. The temperature will drop if the length exceeds the limit, which will affect the adhesion of the glue. First, fit the toe, then the heel and both sides. The outsole should just cover the glue line. The sole should not be skewed or shaken, and the sole fitter must wear gloves throughout the process to prevent the grease on the hands from contacting the glued surface and affecting the pulling force.

[0034] Step 10: Pressing: Use the correct bottom pressing die to press the dough to make the dough fully adhere to the bottom. The pressing pressure is 35KG and the time is 12-15 seconds.

[0035] Step 11: Freeze and unplug the shoes. The freezer temperature is 0-5℃ for 5-6 minutes. The purpose of freezing is to solidify the glue solution to have better pulling force and to shape the shoes better. Note that if the freezer temperature is too low, the shoes will be covered with water droplets, which may cause mold.

[0036] In this embodiment, this process is used to simplify the process, make the toe and heel of the shoe more beautiful, lighter, more environmentally friendly, and have better support strength, increase timeliness, save costs, make it more stable, and avoid quality problems such as through marks / long corners.

[0037] Example 1

[0038] As a preferred embodiment of the present invention, according to step six, the marking must ensure that the front and rear center points of the surface and the bottom are aligned and cannot be skewed. After marking, the left foot and the right foot are compared to ensure that the pair is consistent. The shoe last is the soul of shoemaking, and marking also plays an important role in the quality of the finished shoes.

[0039] Example 2

[0040] As a preferred embodiment of the present invention, according to step seven, roughening is performed by sandpaper, and sandpaper of different specifications is used according to the material. It should be noted that before the sewing machine is put into operation, the leather front corner needs to be pre-roughened by 8MM. Pre-roughening is to roughen the exposed part covered by the draw line to ensure the adhesion tension. Pre-roughening can reduce the roughening time of molding, avoid breaking the draw line, reduce rework, and improve molding output and efficiency.

[0041] Example 3

[0042] As a preferred embodiment of the present invention, according to step eight, the shoes need to be dried immediately after wiping the treatment agent and glue, the oven temperature is 55-65°C, and the time is 3.5-4.5 minutes. According to step ten, the machine needs to be kept clean to prevent the shoes from being contaminated. During the pressing process, light-colored shoes need to be covered with plastic bags, and care should be taken not to use the wrong number.

[0043] What has been described above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new process for shaping the toe / heel of a shoe, characterized in that: The new process of toe and heel shaping production process specifically includes the following steps: Step 1: First, put on the shoelaces during molding production, and use a small brush to evenly apply the hardener on the back of the upper and the fixed position of the heel; Step 2: Before the upper enters the oven, apply white latex around the corners and dry them in the oven at 80℃-85℃ for 5-6 minutes. Step 3: Adjust the upper machine to the working state suitable for this shoe. After the shoe is put into the last, check that the upper should be properly fitted on the last. The left and right feet need to be matched. The toe and heel should be fitted on the last after the shoe is fitted. Step 4: Pull the waist, use waist pliers to pull the upper corner leather material to align it with the midsole rabbet printing line; Step 5: Hit the heel. Adjust the heel machine and use the tightener. Adjust the correct working state and hit the heel according to the marked position. The heel should be round and fit the last without any gaps. Step 6: Draw lines. Adjust the pressure of the line drawing machine to 2.0-2.5KG. Place the shoe last in the line drawing mold and fit it tightly with the outsole. Draw lines on the shoe surface according to the curvature of the outsole edge, which will serve as a reference for subsequent roughening, treatment agent application, glue application and outsole application. Step 7: Roughening. Roughening is to ensure the tension after the surface and bottom are adhered. The genuine leather must be roughened. The surface layer of the second layer of leather must be removed to expose the fiber layer of the genuine leather. The surface of the first layer of leather must be roughened evenly according to the line position. Different specifications of sandpaper are used for roughening according to the material. Step 8: Apply treatment agent and glue. Apply treatment agent according to the rough lines. The leather material should be applied with genuine leather treatment agent. The parts where the inner core of the outsole and the upper are attached need to be applied with treatment agent and baked in the oven. Add appropriate amount of hardener to the treatment agent and glue. Apply the first primer glue and bake in the oven, then apply the second glue and bake in the oven. The glue on the surface and the bottom is tightly adhered together to ensure that the surface and the bottom have good tensile force. Step nine, the upper and the sole should be fitted together after the glue is cremated and the shoes come out of the oven. The upper and the outsole should be fitted together according to the glue rubbing position. The shoes should be fitted together when they come out of the oven on the assembly line and not more than 1 meter. If the length exceeds the limit, the temperature will drop and the glue adhesion will be affected. The sole should be fitted first to the toe and then to the heel and both sides. The outsole should just cover the glue line. The sole should not be skewed or shaken, and the sole fitter must wear gloves throughout the process to prevent the grease on the hands from contacting the glue rubbing surface and affecting the pulling force. Step 10: Pressing: Use the correct bottom pressing die to press the dough to make the dough fully adhere to the bottom. The pressing pressure is 35KG and the time is 12-15 seconds. Step 11, freezing and last removal, the freezer temperature is 0-5℃, the time is 5-6 minutes.

2. A new process for shaping the toe / heel of footwear according to claim 1, characterized in that: According to step six, make sure the front and back center points of the surface and bottom are aligned when drawing the lines. They cannot be skewed. After drawing the lines, compare the left and right feet to ensure that the pairs are matched.

3. A new process for shaping the toe / heel of footwear according to claim 1, characterized in that: As described in step seven, sandpaper is used for roughening, and different specifications of sandpaper are used depending on the material.

4. A new process for shaping the toe / heel of footwear according to claim 1, characterized in that: According to step eight, the surface needs to be dried immediately after applying the treatment agent and glue. The drying temperature in the oven is 55-65°C and the drying time is 3.5-4.5 minutes.

5. A new process for shaping the toe / heel of footwear according to claim 1, characterized in that: As described in step 10, the machine needs to be kept clean to prevent the shoes from being contaminated, and light-colored shoes need to be covered with plastic bags during the pressing process.