Shoe tree and shoe sole with midsole capable of being taken out
By integrally molding the shoe last and the corresponding area of the midsole and using supercritical foaming materials to prepare the midsole, the problem of non-replaceable midsoles in existing shoes and boots has been solved, achieving removability and environmental friendliness of the midsole, and improving the comfort and functionality of shoes and boots.
Patent Information
- Application Number
- CN202423099339.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-16
AI Technical Summary
The existing shoe midsole is fixed to the upper and cannot be replaced, causing inconvenience in use.
Design a shoe last body and corresponding midsole area integrally molded, with a removable midsole in the midsole storage area, the midsole using supercritical foaming material, and microporous foamed plastic products prepared by combining supercritical foaming molding technology.
The removable midsole improves the comfort and drying speed of the shoes, and enhances their versatility and environmental friendliness.
Smart Images

Figure CN223600942U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to shoemaking technical field, and specifically relates to a shoe tree and shoe sole with removable insole. BACKGROUND
[0002] At present, the insole of shoes and boots on the market is firmly combined with the vamp and the shoe sole, and cannot be replaced, so a shoe sole with removable insole is developed. CONTENT OF UTILITY MODEL
[0003] The utility model solves the technical problem of how to develop a shoe sole with removable insole.
[0004] The technical scheme of the utility model is specifically as follows:
[0005] A shoe tree comprises a shoe tree body, and a middle insole corresponding area is fixed at the bottom of the shoe tree body, and the middle insole corresponding area is used for: when a large sole is made, the space occupied by the middle insole corresponding area is a middle insole storage area of the large sole.
[0006] The shoe tree body and the middle insole corresponding area are integrally formed.
[0007] A shoe sole with removable insole, the middle part of the large sole is provided with a recessed middle insole storage area, when the large sole is made, the space occupied by the middle insole corresponding area of the shoe tree body is the middle insole storage area of the large sole, the middle insole storage area is provided with a middle insole, and the middle insole can be taken out from the shoe when the large sole is made into a shoe.
[0008] The middle insole is made of supercritical foaming material.
[0009] Compared with the prior art, the middle insole of the utility model can be taken out like a shoe pad, and is convenient to dry. DRAWINGS
[0010] Figure 1 is a schematic view of the utility model.
[0011] Figure 2 is a schematic view of the combination of the shoe tree, the built-in middle insole and the large sole.
[0012] Figure 3 is a schematic view of the large sole. DETAILED DESCRIPTION
[0013] The utility model will be described in detail below in combination with the drawings and the specific implementation mode.
[0014] As Figure 1 A shoe tree comprises a shoe tree body 10, and a middle insole corresponding area 11 is fixed at the bottom of the shoe tree body 10, and the middle insole corresponding area 11 is used for: when a large sole 30 is made, the space occupied by the middle insole corresponding area 11 is a middle insole storage area 31 of the large sole 30.
[0015] The shoe tree body 10 is integrally formed with the midsole corresponding area 11.
[0016] As Figures 2-3 A midsole removable shoe sole comprises a big sole 30, the middle part of the big sole 30 is provided with a recessed midsole receiving area 31, and the midsole receiving area 31 is provided with a midsole 20, when the big sole 30 is made into a shoe, the midsole 20 can be taken out from the shoe.
[0017] The midsole 20 is a supercritical foaming material.
[0018] The supercritical foaming material is a prior art material, which is a plastic product obtained by using supercritical foaming molding. The supercritical foaming molding is a physical foaming molding technology and also a microcellular foaming molding technology. In the injection molding, extrusion and blow molding processes, carbon dioxide or other gases such as nitrogen in a supercritical state are first injected into a special plasticizing device, the gas is fully and uniformly mixed / diffused with the molten raw material to form a single-phase mixed sol, and then the sol is introduced into a mold cavity or an extrusion die, so that the sol produces a large pressure drop, thereby causing the gas to precipitate to form a large number of bubble nuclei; in the subsequent cooling molding process, the bubble nuclei in the sol continuously grow and form, and finally a microcellular foamed plastic product is obtained.
[0019] The processing process of the utility model is:
[0020] The first part is to adjust the shoe tree
[0021] As Figure 1 shown, according to ergonomics, the height of the back of the shoes and boots is within a certain range, otherwise it is not comfortable to wear or it will cause foot pain. The height of the shoe tree does not include the thickness of the midsole, and only the thickness of the insole is considered when designing the style of the shoes and boots. If the midsole is to be built-in, the height of the shoe tree needs to be increased by the thickness of the midsole based on the existing shoe tree 90, and after the shoe is removed from the tree, the midsole can be placed in the shoes and boots.
[0022] This step is the most important, by adjusting the height of the shoe tree, thickening the tree bottom, adding the thickness of the midsole to the shoe tree, and increasing the height of the side wall of the sole, the midsole can be wrapped and the midsole can be built-in.
[0023] The second part is the change of the sole
[0024] As Figure 3 shown, the height of the current sole is not much different from the side wall. Using the above shoe tree, the midsole corresponding area 11 of the big sole 30 can be made, that is, when making the big sole 30, the space occupied by the midsole corresponding area 11 is the midsole receiving area 31 of the big sole 30.
[0025] After the midsole is built-in, the sole is a shell, and the middle part is much lower than the side wall, that is, the shape is low in the middle and high around.
[0026] Third part: making into shoes
[0027] Because of the insole built-in, when the upper and the insole are combined, the upper is first combined with the insole cloth, the upper setting and the upper stretching process can be used, and the upper is put into an oven for heat setting and finishing.
[0028] (1) Upper setting process: according to the line marking, polishing, sticking of the outsole on the upper, cold setting, de-lasting and shoe making are completed;
[0029] (2) Upper stretching process: polishing the upper, according to the line marking, polishing, sticking of the outsole on the upper, cold setting, de-lasting and shoe making are completed.
[0030] The utility model discloses the following characteristics:
[0031] 1. As an important way of physical foaming, supercritical microcellular foaming has the characteristics of environmental protection, no "three wastes", no pollution, no residue, recyclability, lightness, comfort, shock resistance and shock absorption. The product has excellent mechanical properties, flame retardant properties, weather resistance, good support and other comprehensive properties. The supercritical fluid pressurizes the high polymer material to produce many small bubbles, which can reduce the impact on the feet during running and walking. In long-term exercise, it can effectively alleviate the burden on the feet and protect the feet of athletes. The supercritical foaming technology has the characteristics of high efficiency and energy saving. Compared with traditional physical and chemical methods of preparing materials, this technology does not require high temperature and high pressure conditions, greatly reduces the energy consumption and cost in the preparation process, and meets the green and environmental protection preparation concept.
[0032] 2. The insole can be taken out like an insole, and is convenient to dry;
[0033] 3. After the insole is taken out, the space in the shoe cavity is increased, more air enters, the contact area is larger, the shoes and boots are dried faster, and it is convenient and fast;
[0034] 4. By changing the insole of different thickness, the height of the upper at the ankle position is different, the shoes and boots can be changed into low-top, mid-top and high-top shoes and boots, and one shoe can be used for multiple purposes.
[0035] Other contents refer to the prior art.
[0036] The above is only the preferred embodiment of the utility model, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the utility model, some changes and improvements can be made, which should be regarded as the protection range of the utility model.
Claims
1. A shoe last, comprising a shoe last body (10), characterized in that: The bottom of the shoe last body (10) is fixed with a corresponding area (11) for the midsole. The corresponding area (11) is used to make the space occupied by the corresponding area (11) for the midsole storage area (31) of the outsole (30) when making the outsole (30).
2. The shoe last as described in claim 1, characterized in that: The shoe last body (10) and the corresponding area of the midsole (11) are integrally formed.
3. A removable midsole sole, comprising an outsole (30), characterized in that: The outsole (30) has a recessed midsole storage area (31) in the middle. When the outsole (30) is made, the space occupied by the midsole corresponding area (11) of the shoe last body (10) is the midsole storage area (31) of the outsole (30). The midsole (20) is provided in the midsole storage area (31). When the outsole (30) is made into a shoe, the midsole (20) can be taken out from the shoe.
4. The removable midsole sole as described in claim 3, characterized in that: The midsole (20) is made of supercritical foam material.