Rain boot processing method combining rubber vulcanization and PU injection molding

Abstract

The invention provides a rain boot processing method combining rubber vulcanization and PU injection molding, and relates to the technical field of rain boot preparation. The processing method of the PU injection molding rain boots comprises the following specific steps of S1, manufacturing a sample plate, S2, cutting composite SBR cloth and rubber, S3, pressing the composite SBR cloth and the rubber, S4, sewing uppers, S5, sleeving the uppers with shoe lasts, S6, vulcanizing the uppers, S7, checking, sorting, S8, performing shoe sole injection molding, S9, removing the shoe lasts, and S10, trimming and packaging. In the manufacturing process, the composite SBR cloth and the rubber are adopted to replace traditional gloss oil, the problems that the gloss oil is long in import time, high in cost and pollution to the environment are effectively solved, meanwhile, the heat preservation performance of the rain boots can be improved through the composite SBR cloth, the rain boots are light, soft and comfortable, and in addition, in the production process, the production cost is reduced. The sole is fixed in a degradable PU material injection molding mode, the bonding effect of the sole and the upper is improved, and the finished sole is easier to decompose and not prone to polluting the environment.

Description

Technical Field

[0001] The invention relates to the technical field of rain boots preparation, in particular to a method for processing rain boots by combining rubber vulcanization and PU injection molding. Background Art

[0002] Wellies are ankle-high polymer overshoes that are worn during rainy days, agricultural activities, or muddy ground to protect the feet from external pollutants. They are an excellent piece of equipment for traveling on rainy days.

[0003] In the prior art, varnish is required in the production process of rain boots, but the varnish needs to be imported from abroad, and the import time is long and the cost is high. In addition, the varnish pollutes the environment. In addition, the finished rain boots are heavy and uncomfortable to wear. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a method for processing rain boots by combining rubber vulcanization and PU injection molding, which solves the problems raised by the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a method for processing rain boots combining rubber vulcanization and PU injection molding, comprising the following specific steps:

[0008] S1. Manufacturing samples:

[0009] According to the size of the rain boots, a sample of corresponding size is manufactured;

[0010] S2. Cutting of composite SBR cloth and rubber:

[0011] Lay the composite SBR cloth and rubber on the corresponding sample in turn, and then use a cutting knife to cut off the excess material;

[0012] S3. Pressing the composite SBR cloth and rubber:

[0013] The cut composite SBR cloth and rubber are placed on an assembly line and pressed together using rollers to prepare a composite fabric;

[0014] S4, upper stitching:

[0015] Sewing the pressed composite fabrics;

[0016] S5, Upper last:

[0017] Put the stitched upper on the last;

[0018] S6, vulcanization of upper:

[0019] Placing the rear upper of the last in a vulcanizing tank for vulcanization reaction;

[0020] S7, inspection and coding:

[0021] After the vulcanized uppers are taken out, they are inspected for unqualified products, and the qualified uppers are classified according to the shoe size;

[0022] S8, sole injection molding:

[0023] Place the classified uppers in the corresponding size of the sole molds, and then inject liquid PU material into the molds. After natural cooling, the soles are manufactured.

[0024] S9, unlasting:

[0025] Slowly remove the last from the finished rain boot:

[0026] S10, trimming and packaging:

[0027] Trim the injection-molded soles, remove excess burrs, and then package them according to the size of the rain boots.

[0028] Preferably, the composite SBR cloth in S2 is made of microfiber velvet cloth and SBR material, and the rubber in S2 is natural rubber.

[0029] Preferably, the pressure of the rollers during pressing in S3 is 1.5 kg / cm2.

[0030] Preferably, the last is made of aluminum material.

[0031] Preferably, the vulcanization temperature in S6 is 135 degrees and the heating time is 60 minutes.

[0032] (III) Beneficial effects

[0033] The present invention provides a method for processing rain boots by combining rubber vulcanization and PU injection molding. It has the following beneficial effects:

[0034] 1. The present invention uses composite SBR cloth and rubber to replace the traditional varnish during the manufacturing process, which effectively solves the problems of long import time, high cost and environmental pollution of varnish. At the same time, the use of composite SBR cloth can improve the thermal insulation performance of rain boots, and the product is light, soft and comfortable.

[0035] 2. In the present invention, during the production process, the sole is fixed by injection molding of degradable PU material, which increases the bonding effect between the sole and the upper, and the finished sole is easier to decompose and less likely to pollute the environment. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example:

[0038] The embodiment of the present invention provides a method for processing rain boots by combining rubber vulcanization and PU injection molding, comprising the following specific steps:

[0039] S1. Manufacturing samples:

[0040] According to the size of the rain boots, a sample of corresponding size is manufactured;

[0041] S2. Cutting of composite SBR cloth and rubber:

[0042] The composite SBR cloth and rubber are sequentially attached to the corresponding sample, and then the excess material is cut with a cutting knife. The composite SBR cloth in S2 is made of microfiber velvet cloth and SBR material. The rubber in S2 is natural rubber. The use of composite SBR cloth can improve the thermal insulation performance of rain boots, and the product is light, soft and comfortable.

[0043] S3. Pressing the composite SBR cloth and rubber:

[0044] The cut composite SBR cloth and rubber are placed on an assembly line and pressed together using a roller to prepare a composite fabric, wherein the pressure during the roller pressing in S3 is 1.5 kg / cm2;

[0045] S4, upper stitching:

[0046] Sewing the laminated composite fabrics;

[0047] S5, shoe last:

[0048] Put the stitched upper on the last, which is made of aluminum material. The function of the last is to shape and vulcanize the upper into the shape of the shoe on the aluminum last;

[0049] S6, vulcanization of upper:

[0050] Place the rear upper of the last in a vulcanizing tank for vulcanization reaction. The vulcanization temperature in S6 is 135 degrees and the heating time is 60 minutes. The role of vulcanization is to heat the raw rubber into cooked rubber to achieve permanent shaping.

[0051] S7, inspection and coding:

[0052] After the vulcanized uppers are taken out, they are inspected for unqualified products. Unqualified products are repaired or directly scrapped. The uppers that have passed the inspection are classified according to the shoe size.

[0053] S8, sole injection molding:

[0054] Place the classified uppers in the corresponding size of the sole molds, and then inject liquid PU material into the molds. After natural cooling, the soles are manufactured.

[0055] S9, unlasting:

[0056] Slowly remove the last from the finished rain boot:

[0057] S10, trimming and packaging:

[0058] Trim the injection-molded soles, remove excess burrs, and then package them according to the size of the rain boots.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for processing rain boots by combining rubber vulcanization and PU injection molding, characterized in that: The specific steps include: S1. Manufacturing samples: According to the size of the rain boots, a sample of corresponding size is manufactured; S2. Cutting of composite SBR cloth and rubber: Lay the composite SBR cloth and rubber on the corresponding sample in turn, and then use a cutting knife to cut off the excess material; S3. Pressing the composite SBR cloth and rubber: The cut composite SBR cloth and rubber are placed on an assembly line and pressed together using rollers to prepare a composite fabric; S4, upper stitching: Sewing the laminated composite fabrics; S5, shoe last: Put the stitched upper on the last; S6, vulcanization of upper: Placing the rear upper of the last in a vulcanizing tank for vulcanization reaction; S7, inspection and coding: After the vulcanized uppers are taken out, they are inspected for unqualified products, and the qualified uppers are classified according to the shoe size; S8, sole injection molding: Place the classified uppers in the corresponding size of the sole molds, and then inject liquid PU material into the molds. After natural cooling, the soles are manufactured. S9, unlasting: Slowly remove the last from the finished rain boot: S10, trimming and packaging: Trim the injection-molded soles, remove excess burrs, and then package them according to the size of the rain boots.

2. The method for processing rain boots combining rubber vulcanization and PU injection molding according to claim 1, characterized in that: The composite SBR cloth in S2 is made of microfiber velvet cloth and SBR material, and the rubber in S2 is natural rubber.

3. The method for processing rain boots combining rubber vulcanization and PU injection molding according to claim 1, characterized in that: The pressure of the rollers during pressing in S3 is 1.5 kg / cm2.

4. The method for processing rain boots combining rubber vulcanization and PU injection molding according to claim 1, characterized in that: The shoe last is made of aluminum material.

5. The method for processing rain boots combining rubber vulcanization and PU injection molding according to claim 1, characterized in that: The vulcanization temperature in S6 is 135 degrees and the heating time is 60 minutes.