CN111938267A

CN111938267A - Shoe shell and preparation method thereof

Info

Publication number: CN111938267A
Application number: CN202010767553.5A
Authority: CN
Inventors: 刘中华
Original assignee: Guangzhou Kunhao Shoes Co ltd
Current assignee: Guangzhou Kunhao Shoes Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2020-11-17

Abstract

The invention provides a shoe shell and a preparation method thereof. The sock comprises a sock barrel part, a foot protection part and a sock bottom part, and the shell is fixed on the outer part of the foot protection part and/or the sock barrel part; the shell is not fixed on the bottom of the sock cover; the shell covers the foot protection part, and the shell covers part of the sock leg part; the shell and the sock of the shoe shell manufactured by the method are firmly connected, the thickness of the sock is not limited any more, and a producer can select the sock with proper thickness according to the requirement.

Description

Shoe shell and preparation method thereof

Technical Field

The invention relates to the field of shoemaking, in particular to a shoe shell and a preparation method thereof.

Background

Shoes are one of the necessities in life and production activities of people. Among the conventional methods for manufacturing shoes, there are various methods for manufacturing shoes by using an adhesive process used in the shoe manufacturing industry, and also conventional methods for manufacturing shoes by using a sewing process.

In the gluing process, the shoe making method not only consumes more shoe upper materials at the folding and gluing part of the shoe upper and seriously pollutes the environment, but also consumes hardboard shoe materials as insole soles, increases the production cost, and has complex operation procedures and time consumption. The hard and heavy materials of the hard board shoe chamber bottom reduce the softness and the light characteristic of the finished shoe.

The traditional shoe making method of sewing technology is a shoe making method that the upper is only sewed with the sole, so that the upper and the sole are combined and formed. The shoes made by the method have poor waterproofness even if the sewing is good and firm, and particularly when the shoes are worn on rainy days or snowy days, the water seepage phenomenon occurs in the shoes.

In order to meet the requirement of going out in rainy days, people invent waterproof rain shoes, and in the prior art, the waterproof shoes are generally made of two types, namely plastic materials and rubber materials. The integrally formed shoes are generally made of plastic materials, the integrally formed design is not realized by the aid of rubber materials, and particularly, the sock sleeves and the shell are bonded by glue. However, the sock is only bonded by a thin layer when the sock is bonded by glue, and the sock is too thick, so that the sock is not firmly bonded.

Disclosure of Invention

Based on this, there is a need for a shoe shell that can be integrally formed with a shell and a method for making the same.

The embodiment of the invention provides a shoe shell which is characterized by comprising a sock and a shell, wherein the shell is a rubber shell, the sock comprises a sock cylinder part, a foot protection part and a sock bottom, the shell is fixed on the outer surface of the sock, and the sock bottom is exposed out of the shell.

Preferably, the shell is not fixed on the bottom of the sock; the upper part of the sock protrudes out of the shell.

Preferably, there is also no adhesive layer between the sock and the shell; the sock cover is made of one or more of leather, cloth, rubber and superfine fiber PU synthetic leather.

Preferably, the housing is provided with a decorative part protruding from the surface of the housing, the decorative part is made of rubber, and the decorative part and the housing are integrally formed.

Preferably, the thickness of the sock is 0.5-8 mm; the thickness of the shell is 0.2-2 mm; further, the thickness of the sock is 1-5 mm; the thickness of the shell is 0.5-1.5 mm.

The invention also provides a preparation method of the shoe shell, which comprises the following steps:

taking the sock and sleeving the sock in the shell mold;

taking rubber, and putting the rubber into injection equipment;

heating the ejection equipment to soften the rubber, ejecting the softened rubber into the shell mold, and attaching the rubber to the sock;

cooling and demolding to form the shoe shell.

Preferably, the injection device comprises a screw capable of being heated, and after the rubber enters the injection device, the heated screw rotates and stirs the rubber to soften the rubber; injecting rubber into the sole mold through the injection device, and pressing the rubber into the shell mold through high-pressure gas by the injection device.

Preferably, before the rubber is placed into the injection equipment, the rubber is processed in an internal rubber mixing machine, and then the rubber subjected to internal mixing is placed into a milling machine or a strip discharging machine to be made into strip rubber; and after entering the ejection equipment, the strip-shaped rubber is softened in the ejection equipment, and the softened rubber is pressed into the shell mold through high-pressure gas.

Preferably, the shell mold comprises a mold base, a mold cover and a mold core, a mold core cavity is formed between the mold base and the mold cover, the mold core is fixed in the mold core cavity, and a shell molding cavity is formed between the mold core and the mold base.

Preferably, after the rubber is injected into a shell mold, heating and vulcanizing are carried out for molding; the temperature of the injected rubber is 140-200 ℃, and the temperature of the shell mold is 60-100 ℃.

The shoe shell comprises the shell and the sock, the shell and the outer sleeve are fixedly connected through hot melting, the sock and the shell are firmly connected, the thickness of the sock is not limited any more, and the thickness of the sock can be selected according to requirements during production.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a structural view of a shoe shell according to a preferred embodiment of the present invention;

FIG. 2 is a structural view of the ankle sock according to the preferred embodiment of the present invention;

fig. 3 is a schematic structural view of a shoe cover mold according to still another preferred embodiment of the present invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 to 3, the embodiment of the present invention provides a shoe shell, which is characterized by comprising a sock 1 and a shell 2, wherein the shell 2 is a rubber shell, and the shell 2 is fixed on the sock 1 by heat fusion. The sock 1 and the shell 2 are integrally formed and firmly connected, the thickness of the sock 1 is not limited any more, and the thickness of the sock can be selected as required during production. In the prior art, some shoe bodies (plastic waterproof shoes) are not provided with the sock sleeves 1, and some shoe bodies are only provided with a very thin sock sleeve 1. If the sock 1 is arranged on the shoe body, the shell 2 and the sock 1 are generally fixed together through glue, the environment is greatly polluted in the glue production and use processes, and the sock 1 and the shell 2 are easily separated through the shoe body bonded by the glue, so that the shoe body is not firm and has short service life; in addition, the more thick the sock 1 is, the more difficult it is to fix the sock 1 and the case 2, and therefore, the thinner the sock 1 is generally used in the process of fixing the sock 1 and the case 2 by glue. The sock sleeves 1 and the shell 2 are fixed together through hot melting, so that the connection is firmer, more durable and more environment-friendly; the shell 2 is fixed with the sock 1 through hot melting technology, so that the sock 1 with a thicker thickness can be used, and the wearing is more comfortable. The ankle sock comprises a sock barrel portion, a foot protection portion and a sock bottom portion, the shell is fixed to the outer surface of the sock, and the sock bottom portion is exposed out of the shell. When the shoe shell is fixedly connected with the sole, the bottom of the sock and the shell are fixedly connected with the sole, and various soles can be selected to be matched with the shell.

In the preferred embodiment, the shell 2 is not fixed to the bottom 13 of the sock; the upper portion of the sock 1 protrudes outside the shell 2.

The sock 1 comprises a sock barrel part 11, a foot protection part 12 and a sock bottom part 13, and the shell 2 is fixed on the outer part of the foot protection part 12 and/or the sock barrel part 11; the shell 2 is not fixed on the sock bottom 13; the shell covers the foot protection part, and the shell covers part of the sock leg part. The housing 2 covers a portion of the foot guard portion 12; alternatively, the case 2 covers the entirety of the foot protector portion 12; alternatively, the shell 2 covers the entire foot protector portion 12, and the shell 2 covers a part of the skirt portion 11. At present, the shell 2 generally covers the foot protection part 12 and part of the sock leg part 11, so that the waterproof effect is better; if it is desired to increase the ventilation effect, the housing 2 may be provided only in the lower portion of the foot guard 12; the shell 2 is not fixed on the sock bottom 13, and the sock bottom 13 is reserved to be connected with the sole 3.

In the preferred embodiment, there is no adhesive layer between the sock 1 and the shell 2, and since no adhesive is used for connecting and fixing the sock 1 and the shell 2, the environmental pollution is reduced. Because the shell and the sole do not need to be bonded by glue, the pollution to the environment can be reduced. In addition, the finished shoes are relatively single in material components, are favorable for recycling and are more environment-friendly. The sock cover 1 is made of one or more of leather, cloth, rubber and superfine fiber PU synthetic leather.

In a preferred embodiment, the housing 2 is provided with a decoration 4, the decoration 4 protrudes from the surface of the housing 2, the decoration 4 is made of rubber, and the decoration 4 is integrally formed with the housing 2. The decoration 4 plays a role of making the shoe body more beautiful, and the decoration 4 and the shell 2 can be rubber with the same color or rubber with different colors.

In a preferred embodiment, the sock 1 has a thickness of 0.5-8 mm; the thickness of the shell 2 is 0.2-2 mm; further, the thickness of the sock cover 1 is 1-5 mm; the thickness of the shell 2 is 0.5-1.5 mm. Specifically, the thickness of the sock 1 is 1.5mm or 2mm or 3mm or 4 mm; the thickness of the housing 2 is 0.3mm or 0.5mm or 0.8mm or 1mm or 1.2mm or 1.5mm or 1.8 mm.

taking the sock 1, and sleeving the sock 1 in the shell mold 10;

taking rubber, and putting the rubber into injection equipment;

heating by an injection device to soften the rubber, injecting the softened rubber into a shell mold 10, and attaching the rubber to the sock 1 to form a shell;

cooling and demolding to obtain the shoe shell.

The invention only produces the shoe shell, and the shoe shell can be matched with various soles to form the shoes. In production, one shell mold 10 may be used in conjunction with a plurality of sole molds 20 to produce footwear. In the prior art, the shell 1 and the sole 2 use the same die, and during production, different shells 1 and soles 2 cannot be matched as required, so that the produced product is single. If only the shell 1 or the sole 2 is required to be replaced, a whole set of molds needs to be replaced, and the cost for opening one set of molds is high, so that the cost is wasted.

In a preferred embodiment, the injection device comprises a screw capable of being heated, and after the rubber enters the injection device, the heated screw rotates and stirs the rubber to ensure that the rubber is heated and softened; rubber is injected into the sole mold by an injection device which presses the rubber into the shell mold 10 by high pressure gas.

In a preferred embodiment, before being put into the injection equipment, the rubber is processed in an internal rubber mixing machine, and then the rubber subjected to internal mixing is put into a milling machine or a strip discharging machine to be made into strip rubber; after entering the injection device, the strip-shaped rubber is softened in the injection device, and the softened rubber is pressed into the housing mold 10 by high-pressure gas. In the shoe manufacturing process, the softened rubber material is still solid and needs a large pressure to press the rubber material out, rather than melting and injecting the rubber material, so that the high-pressure gas is used as an aid to press the softened rubber into the housing mold 10.

In a preferred embodiment, the shell mold 10 includes a base 101, a cover 102, and a core 103, with a core cavity formed between the base 101 and the cover 102, the core 103 secured within the core cavity, and a shell-forming cavity 104 formed between the core 103 and the base 101. The sock 1 is sleeved on the mold core 103, the rubber is attached to the sock 1, and the sock 1 and the mold core 103 are not bonded, so that the demolding is convenient. Specifically, the mold core 103 penetrates through the mold base 101, the mold base is divided into at least two pieces, the two pieces of structures are folded together to form the mold base, a mold core cavity is formed between the two pieces of structures, and the mold core sleeved with the sock is conveniently placed into the mold core cavity. A first bottom plate 105 is fixed on the die holder 101, a second bottom plate 106 is arranged on the die cover 102, the die holder 101, the die core 103 and the die cover 102 are clamped among the first bottom plate 105 and the second bottom plate 106, the die core 103 is fixedly connected with the first bottom plate 105, the position of the die core 103 is convenient to position, and in addition, one end, close to the first bottom plate 105, of the die core 103 is tightly matched with the die holder 101, and the positioning is convenient. And a shell forming cavity is formed between the other positions of the mold core 103 and the mold base 101 and is used for adding rubber materials to form the shell.

In a preferred embodiment, after injecting the rubber into the shell mold 10, the rubber is heated and vulcanized to be molded; the temperature of the injected rubber is 140-200 ℃, and the temperature of the shell mold 10 is 60-100 ℃. Preferably, the temperature of the injected rubber is 180 ℃ and the temperature of the shell mold 10 is 80 ℃; the rubber has the best molding effect at about 180 ℃ and is easy to be injected; when the shell mold 10 is 80 ℃, the shell 2 and the sock 1 sleeve can be guaranteed to be good in hot melting fixing effect, and the quality of the sock 1 cannot be affected.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only express specific embodiments of the invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a shoe shell, its characterized in that includes ankle socks and casing, the casing is the rubber casing, the ankle socks includes the leg portion of a stocking, protects foot portion and ankle socks bottom, the casing is fixed the surface of ankle socks, just the ankle socks bottom is followed expose in the casing.

2. The shoe shell of claim 1, wherein said sock bottom has no shell secured thereto; the upper part of the sock protrudes out of the shell.

3. The footwear shell according to claim 1, wherein there is no adhesive layer between said sock and said shell; the sock cover is made of one or more of leather, cloth, rubber and superfine fiber PU synthetic leather.

4. The shoe shell according to claim 1, wherein the housing is provided with a decoration protruding from a surface of the housing, the decoration being made of rubber, the decoration being integrally formed with the housing.

5. The shoe shell according to claim 1, wherein said sock has a thickness of 0.5-8 mm; the thickness of the shell is 0.2-2 mm; further, the thickness of the sock is 1-5 mm; the thickness of the shell is 0.5-1.5 mm.

6. A preparation method of a shoe shell is characterized by comprising the following steps:

taking the sock and sleeving the sock in the shell mold;

taking rubber, and putting the rubber into injection equipment;

heating the ejection equipment to soften the rubber, ejecting the softened rubber into a shell mold, and attaching the rubber to the sock to form a shell;

cooling and demolding to obtain the shoe shell.

7. The method for preparing a shoe shell according to claim 6, wherein the injection device comprises a screw capable of heating, and after the rubber enters the injection device, the heated screw rotates and stirs the rubber to soften the rubber; injecting rubber into the sole mold through the injection device, and pressing the rubber into the shell mold through high-pressure gas by the injection device.

8. The method for preparing the shoe shell according to claim 6, wherein the rubber is processed in an internal rubber mixing machine before being put into an injection device, and then the rubber subjected to internal mixing is put into a milling machine or a strip discharging machine to be made into strip rubber; and after entering the ejection equipment, the strip-shaped rubber is softened in the ejection equipment, and the softened rubber is pressed into the shell mold through high-pressure gas.

9. The method of claim 6, wherein the shell mold comprises a base, a cover and a core, wherein the base and the cover form a core cavity therebetween, the core is fixed in the core cavity, and the core and the base form a shell forming cavity therebetween.

10. The method for manufacturing a shoe shell according to claim 6, wherein the rubber is molded by heating and vulcanizing after being injected into the shell mold; the temperature of the injected rubber is 140-200 ℃, and the temperature of the shell mold is 60-100 ℃.