A kind of hot pressing forming process of shoe back

Abstract

The invention discloses a hot pressing forming process for a shoe upper, comprising: providing raw materials, a first forming mold, an outer shoe piece, a hot press machine and a sewing tool for standby use; placing the first forming mold on the hot press machine, and placing the raw materials on the first forming mold, the hot press machine hot pressing the raw materials and keeping them warm for a first time to obtain a hot pressed semi-finished product; fitting the upper edge of the outer shoe piece with the upper edge of the front end of the hot pressed semi-finished product, and the sewing tool sews the upper edge of the outer shoe piece and the upper edge of the hot pressed semi-finished product into one; turning the outer shoe piece after sewing upward to the rear end of the hot pressed semi-finished product, and fitting the outer shoe piece with the rear surface of the hot pressed semi-finished product. The process flow of hot pressing integrated forming is simple and can avoid the problem of sewing lines between the joints of the sheets, and in combination with the sewing turn-up process, there is no sewing line on the outside of the shoe upper, thereby ensuring the overall aesthetics of the formed shoe upper.

Description

Technical Field

[0001] The invention relates to the technical field of shoe back upper production technology, in particular to a shoe back upper hot pressing molding process. Background Art

[0002] The heels of existing shoes are mostly made by sewing and forming technology, which makes the production process of the heels more complicated, thereby increasing the working time and labor intensity of workers, reducing the production efficiency of the heels, and more sewing lines are generated at the joints of the sheets constituting the heels, which easily leads to the problem of unsightly heels. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0004] The present invention provides a hot pressing forming process for a shoe upper, comprising the following steps: providing raw materials, a first forming mold, an outer shoe piece, a hot press machine and a sewing tool for standby use; placing the first forming mold on the hot press machine, placing the raw materials on the first forming mold, and the hot press machine hot pressing the raw materials and keeping them warm for a first time to obtain a hot pressed semi-finished product; laminating the upper edge of the outer shoe piece with the upper edge of the front end of the hot pressed semi-finished product, and sewing the upper edge of the outer shoe piece with the upper edge of the hot pressed semi-finished product into one piece with a sewing tool; turning the sewn outer shoe piece upward to the rear end of the hot pressed semi-finished product, and laminating the outer shoe piece with the rear surface of the hot pressed semi-finished product to obtain a laminated semi-finished product.

[0005] A shoe upper hot pressing forming process provided by an embodiment of the present invention has at least the following beneficial effects: a first forming mold is placed on a hot press, a raw material is placed on the first forming mold, and the raw material is hot pressed and kept warm for a first time by the hot press, that is, the raw material is hot pressed into a hot pressed semi-finished product by the first hot pressing of the hot press. Compared with the shoe uppers made by traditional sewing, the process flow of hot pressing forming is relatively simple, which is beneficial to reducing the labor time and labor intensity of workers, and is beneficial to improving the efficiency of shoe upper production. The hot pressing integrated forming process is beneficial to avoiding the problem of more stitches at the connection of the sheets constituting the shoe upper; after the raw material is hot pressed by the hot press to obtain the hot pressed semi-finished product, the upper edge of the outer shoe piece is placed on the upper. The upper edge of the hot-pressed semi-finished product is fit together with the upper edge of the front end of the hot-pressed semi-finished product, and the sewing tool sews the upper edge of the outer shoe piece and the upper edge of the hot-pressed semi-finished product into one, and the sewn outer shoe piece is flipped upward to the rear end of the hot-pressed semi-finished product, so that the outer shoe piece is fit with the rear surface of the hot-pressed semi-finished product to obtain a fitted semi-finished product, that is, after the hot-pressed semi-finished product is obtained by the hot-pressing process, a sewing turn-over process is adopted to form a edging structure at the upper edge of the hot-pressed semi-finished product, which is beneficial to reducing the scratches on the human body caused by the shoe back made by the shoe back hot-pressing forming process, and is beneficial to improving the comfort of human wearing, and the combination of sewing turn-over and hot-pressing process makes the outside of the shoe back finished product have no sewing lines, which is beneficial to ensuring the overall aesthetics of the shoe back made by the shoe back hot-pressing forming process.

[0006] According to some embodiments of the present invention, the present invention also includes the following steps: providing a second molding mold and a hot press for standby use, and placing the second molding mold on the hot press; placing the bonded semi-finished product on the second molding mold, and using the hot press to hot-press the bonded semi-finished product and keep it warm for a second time to obtain a rough blank of the shoe back upper.

[0007] The bonded semi-finished product can be placed in a second molding mold, and the hot press machine hot presses the bonded semi-finished product and keeps it warm for a second time, that is, after the sewing and turning over is completed, the bonded semi-finished product is hot pressed for a second time. The second hot pressing is beneficial to hot-pressing the outer shoe piece and the hot-pressed semi-finished product into one, which can make the internal structure of the shoe back rough blank more compact to a certain extent, and the connection between the sheets that make up the shoe back is tighter, meeting the use requirements of the shoe back hot pressing molding process.

[0008] According to some embodiments of the present invention, the raw materials include a lower sponge sheet, a supporting elastic sheet and an inner shoe sheet, and the lower sponge sheet, the supporting elastic sheet and the inner shoe sheet are placed on the first molding mold in sequence from bottom to top.

[0009] Specifically, the raw materials provided include a lower sponge sheet, a supporting elastic sheet and an inner shoe sheet. The lower sponge sheet, the supporting elastic sheet and the inner shoe sheet are placed on the first molding mold in sequence from bottom to top, that is, the hot-pressed semi-finished product has a built-in supporting elastic sheet. The setting of the supporting elastic sheet is beneficial to supporting and rebounding the entire back of the shoe, and can assist the user to press down the back of the shoe and then put the foot into the shoe mouth. The supporting elastic sheet can automatically rebound to assist the user to put on the shoe.

[0010] According to some embodiments of the present invention, the raw material further includes a shoe mouth reinforcement sheet, a shoe body reinforcement sheet and a buffer sheet; placing the first molding die on a hot press, placing the raw material on the first molding die, and the hot press hot presses the raw material and keeps it warm for a first time to obtain a hot pressed semi-finished product, including the following steps:

[0011] Place the first molding mold on a hot press; place the lower sponge sheet and the supporting elastic sheet on the first molding mold in sequence from bottom to top; place the shoe opening reinforcement sheet on the lower sponge sheet, and place the shoe opening reinforcement sheet at the shoe opening of the shoe back; cover the shoe body reinforcement sheet on the elastic supporting sheet and the shoe opening reinforcement sheet, and place the buffer sheet on the shoe body reinforcement sheet, the buffer sheet is located in the middle and upper part of the shoe back; cover the inner shoe sheet on the buffer sheet and the shoe body reinforcement sheet; the hot press machine hot presses the raw materials and keeps them warm for the first time to obtain a hot pressed semi-finished product.

[0012] The raw materials provided include not only a lower sponge sheet, a supporting elastic sheet and an inner shoe sheet, but also a shoe opening reinforcement sheet, a shoe body reinforcement sheet and a buffer sheet. The shoe opening reinforcement sheet is placed on the lower sponge sheet and at the shoe opening of the shoe back. The setting of the shoe opening reinforcement sheet is conducive to making the shoe opening of the shoe back after molding harder, which is conducive to better wrapping the human foot. The shoe body reinforcement sheet covers the elastic supporting sheet and the shoe opening reinforcement sheet. The setting of the shoe body reinforcement sheet is conducive to making the overall tensile resistance of the shoe back better, which is conducive to increasing the durability of the shoe back after molding. The buffer sheet is placed on the shoe body reinforcement sheet, and the buffer sheet is located in the middle and upper part of the shoe back. The setting of the buffer sheet can form a groove at the lower end of the shoe back for hooking the heel. During the movement of the human foot, it can effectively hook the human foot and make the formed shoe back fit the human foot better.

[0013] According to some embodiments of the present invention, the temperature range of the hot press for hot pressing the raw material is 150° C. to 230° C., and the setting range of the first time is 120s to 300s.

[0014] The temperature range of the hot press machine for the first hot pressing of the raw materials is 150℃ to 230℃, and the insulation time is 120s to 300s. By setting the hot pressing temperature and insulation time, the sponge is matured and a high production efficiency is maintained, meeting the process requirements of hot pressing molding of the shoe back.

[0015] According to some embodiments of the present invention, before the step of fitting the upper edge of the outer shoe piece with the upper edge of the front end of the hot-pressed semi-finished product and sewing the upper edge of the outer shoe piece with the upper edge of the hot-pressed semi-finished product into one with a sewing tool, the following step is also included: providing a cutting tool for standby, and cutting the upper edge of the hot-pressed semi-finished product with the cutting tool.

[0016] Before the upper edge of the outer shoe piece is fitted with the upper edge of the front end of the hot-pressed semi-finished product, the upper edge of the hot-pressed semi-finished product needs to be cut by a cutting tool to form the required shape of the finished product and to achieve the fitting of the outer shoe piece with the hot-pressed semi-finished product.

[0017] According to some embodiments of the present invention, the sewn outer shoe piece is flipped upward to the rear end of the hot-pressed semi-finished product, and the outer shoe piece is bonded to the rear surface of the hot-pressed semi-finished product to obtain a bonded semi-finished product, including the following steps: providing an adhesive sheet and a heating device for standby use, with hot melt adhesive attached to the adhesive sheet; bonding the adhesive sheet to the rear surface of the hot-pressed semi-finished product; the heating device heats the adhesive sheet to melt the hot melt adhesive; flipping the sewn outer shoe piece upward to the rear end of the hot-pressed semi-finished product, and bonding it to the adhesive sheet to obtain a bonded semi-finished product.

[0018] Hot melt adhesive is attached to the adhesive sheet, and one side of the adhesive sheet is adhered to the rear surface of the hot-pressed semi-finished product. The adhesive sheet is heated by a heating device to melt the hot melt adhesive in the adhesive sheet, so that it can be adhered to the outer shoe piece that is turned back, completing the bonding and preliminary shaping of the outer shoe piece and the hot-pressed semi-finished product, preparing for the subsequent second hot pressing.

[0019] According to some embodiments of the present invention, one side of the adhesive sheet is sticky, the sticky side of the adhesive sheet is bonded to the back surface of the hot-pressed semi-finished product, the hot melt adhesive is attached to the other side of the adhesive sheet, and the heating device is a heating bellows, which blows hot air to heat the adhesive sheet to melt the hot melt adhesive.

[0020] Before the adhesive sheet is pasted to the hot-pressed semi-finished product, hot melt adhesive needs to be sprayed on the surface of the adhesive sheet to prepare for the adhesion of the adhesive sheet to the outer shoe piece. After the adhesive side of the adhesive sheet is pasted to the rear surface of the hot-pressed semi-finished product, the hot melt adhesive on the other side of the adhesive sheet can be melted by blowing hot air through a heated bellows, so that the other side of the adhesive sheet also has a certain degree of adhesion, thereby achieving the adhesion of the adhesive sheet to the outer shoe piece.

[0021] According to some embodiments of the present invention, the temperature range of the hot pressing machine for hot pressing the hot pressed semi-finished product is 150° C. to 230° C., and the setting range of the second time is 120s to 300s.

[0022] The temperature range of the hot press machine for the second hot pressing of the hot pressed semi-finished product is 150℃ to 230℃, and the setting range of the second time is 120s to 300s. The adhesive sheet can be a sponge part. By setting the hot pressing temperature and insulation time, the sponge is matured and a high production efficiency is maintained to meet the process requirements of hot pressing molding of the back of the shoe.

[0023] According to some embodiments of the present invention, after the rough shoe upper is prepared, the lower edge and the side edges of the rough shoe upper can be sheared by a cutting tool.

[0024] After two hot-pressing forming processes, the rough shoe upper blank needs to be sheared with a cutting tool at the lower edge and side surplus material of the rough shoe upper so that the rough shoe upper blank forms a preset shape so as to cooperate with the upper and the sole to realize the production of the shoe body.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 A main flow chart of a shoe back upper hot pressing forming process provided by an embodiment of the present invention;

[0028] Figure 2 An auxiliary flow chart of a shoe back upper hot pressing forming process provided by an embodiment of the present invention;

[0029] Figure 3 An auxiliary flow chart of a shoe back upper hot pressing forming process provided by an embodiment of the present invention;

[0030] Figure 4 A schematic structural diagram of a product produced by a shoe upper hot pressing process provided by an embodiment of the present invention.

[0031] In the attached drawings: 110 - inner shoe piece; 120 - outer shoe piece; 130 - edge binding; 200 - supporting elastic piece. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In the description of the present invention, the meaning of "several" is an indefinite quantity, the meaning of "multiple" is more than two, "greater than", "less than", "exceed", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. If there is a description of the first and the second, it is only for the purpose of distinguishing the technical features, and it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features. In addition, "and / or" appearing in the full text represents three parallel solutions. For example, A and / or B represents the solution satisfied by A, the solution satisfied by B, or the solution satisfied by both A and B.

[0035] In the description of the present invention, if there is a short sentence containing multiple parallel features, the attributive in it limits the closest feature, for example: B, C set on A, E connected to D, which means that B is set on A, E is connected to D, and does not constitute a limitation on C; but the attributives that express the relationship between features, such as "set at intervals", "circular arrangement", etc., do not belong to this category. If the word "all" is placed before the attributive, it means that all the features in the short sentence are limited, such as B, C, D all set on A, which means that B, C and D are all set on A.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] Combine the following Figure 1-Figure 4 Embodiments of the present invention are described.

[0038] Example 1, see Figure 1 and Figure 2 The embodiment of the present invention provides a shoe back upper hot pressing forming process, comprising the following steps:

[0039] S100: providing raw materials, a first molding die, an outer shoe sheet 120, a heat press machine and sewing tools for standby use;

[0040] S200: placing a first molding die on a hot press, placing a raw material on the first molding die, and hot pressing the raw material and keeping it warm for a first time to obtain a hot pressed semi-finished product;

[0041] S300: Lay the upper edge of the outer shoe piece 120 with the upper edge of the front end of the hot-pressed semi-finished product, and use a sewing tool to sew the upper edge of the outer shoe piece 120 and the upper edge of the hot-pressed semi-finished product into one piece;

[0042] S400: turning the sewn outer shoe piece 120 upward to the rear end of the hot-pressed semi-finished product, and laminating the outer shoe piece 120 to the rear surface of the hot-pressed semi-finished product to obtain a laminating semi-finished product;

[0043] S500: providing a second molding die and a hot press machine for standby use, and placing the second molding die on the hot press machine;

[0044] S600: placing the bonded semi-finished product on the second forming mold, and the hot press machine heat-presses the bonded semi-finished product and keeps it warm for a second time to obtain a rough blank of the shoe upper.

[0045] In step S100, the first molding mold can be designed according to the style, size, and shape of the actual shoe upper, the pressure and temperature of the hot press can be appropriately adjusted according to actual production requirements, and the sewing tools can be sewing machines or manual sewing needles and threads.

[0046] See also Figure 3 and Figure 4 In step S200, the raw materials include a lower sponge sheet, a supporting elastic sheet 200, a shoe mouth reinforcement sheet, a shoe body reinforcement sheet, a buffer sheet and an inner shoe sheet 110; placing a first molding die on a hot press, placing the raw materials on the first molding die, and the hot press performs hot pressing on the raw materials and keeps them warm for a first time to obtain a hot pressed semi-finished product, including the following steps:

[0047] S210: placing the first molding die on a hot press;

[0048] S220: placing the lower sponge sheet and the supporting elastic sheet 200 on the first molding die from bottom to top in sequence. Specifically, the first molding die is provided with an ejector pin, through which the lower sponge sheet is placed. The provision of the ejector pin is conducive to avoiding the problem of displacement of the lower sponge sheet during the hot pressing process. The supporting elastic sheet 200 is provided with a positioning hole, through which the ejector pin is passed, so that the relative position of the supporting elastic sheet 200 and the first molding die can be fixed, which is conducive to avoiding the problem of defective products caused by the different placement positions of the supporting elastic sheet 200. The supporting elastic sheet 200 can be made of some materials with good supporting performance and elasticity, such as Haicui, TPU (thermoplastic polyurethane elastomer), TPR (thermoplastic rubber), TPE (thermoplastic elastomer), TPEE (thermoplastic polyester elastomer), etc. The hot pressing molding process of the shoe back upper has a supporting elastic sheet 200 built into the shoe back upper. Through the elasticity of the supporting elastic sheet 200, the user can press down the supporting elastic sheet 200 to facilitate inserting the foot into the shoe mouth, and under the elasticity of the supporting elastic sheet 200, the shoe back upper can automatically rebound, thereby achieving the function of assisting the user to complete the wearing of the shoe.

[0049] S230: Place the shoe opening reinforcement sheet on the lower sponge sheet, and place the shoe opening reinforcement sheet at the shoe opening of the shoe back. The shoe opening fixing sheet can be a shaping yarn or other materials with relatively high hardness, so that the hardness of the molded shoe back is higher at the shoe opening, which is beneficial to avoid the problem of poor shoe wrapping caused by the shoe opening being loose during the user's wearing and taking off process.

[0050] S240: Cover the elastic support sheet and the shoe mouth reinforcement sheet with a shoe body reinforcement sheet. The shoe body reinforcement sheet can be made of a shaping yarn or other materials with relatively high hardness. Considering that the structure of the sponge is too loose, the provision of the shoe body reinforcement sheet is beneficial to improving the tensile strength of the shoe back after molding, thereby improving the durability of the shoe back manufactured by the shoe back hot pressing molding process.

[0051] The buffer sheet is placed on the shoe body reinforcement sheet, and the buffer sheet is located in the middle and upper part of the shoe back. The buffer sheet can be made of a material with good buffering performance, such as a sponge pad or foam. The buffer sheet cooperates with the setting of the first forming mold, so that the formed shoe back can form a clip at the inner shoe sheet 110. When the human foot enters the shoe opening, the clip can improve the fit between the shoe back and the human foot. The setting of the buffer sheet can absorb the impact of the human foot, thereby improving the wearing comfort of the user. When the human body walks or exercises, the buffer sheet can hook the human heel, reducing the problem of the shoe not fitting the foot.

[0052] S250: Cover the inner shoe sheet 110 on the buffer sheet and the shoe body reinforcement sheet. The inner shoe sheet 110 is a sheet material that fits the human foot. Considering the comfort of wearing, the inner shoe sheet 110 can be made of a material with good skin-friendliness and air permeability, such as various natural leathers, yarns, canvas, etc. Under the heat pressing action of the heat press, the lower sponge sheet, the supporting elastic sheet 200, the shoe mouth reinforcement sheet, the shoe body reinforcement sheet, the buffer sheet and the inner shoe sheet 110 can be heat-pressed into one body and formed into a preset shape.

[0053] S260: The hot press machine hot presses the raw material and keeps it warm for a first time to obtain a hot pressed semi-finished product.

[0054] The temperature range of the first hot pressing of the raw materials by the hot press is 150°C to 230°C. Preferably, the upper and lower molds of the hot press can be set to 184 degrees Celsius, and the setting range of the first time is 120s to 300s. Preferably, the mold holding time of the hot press can be set to 200s. By setting the hot pressing temperature and holding time, the sponge is matured and a high production efficiency is maintained, thereby meeting the process requirements of hot pressing molding of the back of the shoe.

[0055] The hot pressing forming process for the shoe upper provided in the embodiment of the present invention adopts the hot pressing forming process to form the shoe upper. Compared with the traditional shoe upper made by sewing, the hot pressing forming process is simpler, which is beneficial to reducing the working time and labor intensity of workers, and is beneficial to improving the efficiency of shoe upper production. The hot pressing integrated forming process is beneficial to avoiding the problem of a large number of stitches at the connection points of the sheets constituting the shoe upper.

[0056] The first molding die can be provided with a boundary boss of the shoe upper to be molded, and the pressure of the hot press machine can form a boundary indentation on the hot pressed semi-finished product, which can facilitate workers to shear the remaining material along the boundary indentation on the hot pressed semi-finished product.

[0057] Before step S300, the following steps are also included: providing cutting tools for standby use, such as scissors and cutting pieces. Workers can use the cutting tools to cut the remaining material at the upper edge of the hot-pressed semi-finished product. Workers can cut the remaining material along the boundary indentations on the hot-pressed semi-finished product, so that the upper edge of the hot-pressed semi-finished product meets the shape requirements of the finished product, so as to achieve the fitting of the outer shoe piece 120 with the hot-pressed semi-finished product.

[0058] Step S400 includes the following steps:

[0059] An adhesive sheet and a heating device are provided as spare parts, and a hot melt adhesive is attached to the adhesive sheet;

[0060] The adhesive sheet is attached to the rear surface of the hot-pressed semi-finished product. Specifically, one side of the adhesive sheet is adhesive, and the adhesive side of the adhesive sheet is attached to the rear surface of the hot-pressed semi-finished product, and the hot melt adhesive is attached to the other side of the adhesive sheet;

[0061] The heating device heats the adhesive sheet to melt the hot melt adhesive. The heating device is a heating bellows that blows hot air to heat the adhesive sheet. Alternatively, the heating device can be a heating lamp that heats the adhesive sheet by irradiation to melt the hot melt adhesive.

[0062] The sewn outer shoe piece 120 is turned upward to the rear end of the hot-pressed semi-finished product and bonded to the adhesive sheet to obtain a bonded semi-finished product.

[0063] After the raw materials are hot-pressed into a hot-pressed semi-finished product by a hot press, the upper edge of the outer shoe piece 120 is fitted with the upper edge of the front end of the hot-pressed semi-finished product, and the sewing tool sews the upper edge of the outer shoe piece 120 and the upper edge of the hot-pressed semi-finished product into one, and the sewn outer shoe piece 120 is flipped upward to the rear end of the hot-pressed semi-finished product, so that the outer shoe piece 120 is fitted with the rear surface of the hot-pressed semi-finished product, that is, after hot pressing, a sewing turn-up process is adopted to form a edging 130 structure at the upper edge of the hot-pressed semi-finished product, which is beneficial to reduce the scratches on the human body caused by the shoe back made by the shoe back hot pressing molding process, and is beneficial to improving the comfort of human wearing. In addition, the combination of sewing turn-up and hot pressing process makes the outside of the shoe back finished product without sewing lines, which is beneficial to ensure the overall aesthetics of the shoe back made by the shoe back hot pressing molding process.

[0064] In step S500, the second molding die can be provided with additional patterns, and the hot-pressed semi-finished product after the sewing and reverse packaging is completed can be placed in the second molding die, and the hot press machine hot presses the bonded semi-finished product and keeps it warm for a second time, that is, after the sewing and reverse packaging is completed, the bonded semi-finished product is subjected to a second hot pressing, and the second hot pressing is conducive to hot pressing the outer shoe piece 120 and the hot-pressed semi-finished product into one, which can make the internal structure of the shoe back rough embryo more compact to a certain extent, and the connection between the sheets is tighter, so as to meet the use requirements of the shoe back hot pressing molding process. Through the texture setting on the second molding die and the pressure control of the hot press machine, the outer patterns and textures can be formed after the shoe back is formed, thereby increasing the overall aesthetics of the formed shoe back. The outer shoe piece 120 can be made of wear-resistant, scratch-resistant and other materials, such as various leathers, canvas, etc.

[0065] An ejector pin may also be provided on the second molding die, and the position of the ejector pin on the second molding die is consistent with that of the first molding die, so that the hole position on the hot-pressed semi-finished product is aligned with the ejector pin of the second molding die, thereby achieving positioning and fitting of the hot-pressed semi-finished product and the second molding die.

[0066] In step S600, the temperature range of the second hot pressing of the hot pressed semi-finished product by the hot press is 150°C to 230°C. Preferably, the upper and lower molds of the hot press can be set to 184 degrees Celsius, and the setting range of the second temperature is 120s to 300s. Preferably, the mold holding time of the hot press can be set to 200s. By setting the hot pressing temperature and holding time, the sponge is matured and a high production efficiency is maintained, thereby meeting the process requirements of hot pressing molding of the back of the shoe.

[0067] The shoe back hot pressing forming process provided by the present invention further comprises the following steps:

[0068] After the shoe back rough is obtained, the lower edge and side edges of the shoe back rough can be cut by cutting tools. Specifically, workers can cut the shoe back rough along the boundary indentations to form a finished heel product, so that the shoe back rough is formed into a preset shape to cooperate with the upper and the sole to realize the production of the shoe body.

[0069] The preferred embodiments of the present invention are specifically described above, but the present invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A hot pressing forming process for the back of a shoe, characterized in that , including the following steps: Provide raw materials, first forming molds, outer shoe pieces, heat presses and sewing tools for standby use; Placing the first molding die on the hot press, placing the raw material on the first molding die, and hot pressing the raw material by the hot press and keeping it warm for a first time to obtain a hot pressed semi-finished product; The upper edge of the outer shoe piece is fitted with the upper edge of the front end of the hot-pressed semi-finished product, and the sewing tool sews the upper edge of the outer shoe piece and the upper edge of the hot-pressed semi-finished product into one piece; The sewn outer shoe piece is turned upward to the rear end of the hot-pressed semi-finished product, so that an edge structure is formed at the upper edge of the hot-pressed semi-finished product facing the inner side of the shoe, and the outer shoe piece is bonded to the rear surface of the hot-pressed semi-finished product facing the outer side of the shoe, so as to obtain a bonded semi-finished product; Providing a second molding die and a hot press machine for standby use, and placing the second molding die on the hot press machine; as well as The bonded semi-finished product is placed on the second molding die, and the hot press machine heats and presses the bonded semi-finished product and keeps it warm for a second time to obtain a rough shoe upper blank; The raw materials include a lower sponge sheet, a supporting elastic sheet, an inner shoe sheet, a shoe mouth reinforcement sheet, a shoe body reinforcement sheet and a buffer sheet; placing the first forming mold on the hot press, placing the raw materials on the first forming mold, and the hot press performs hot pressing on the raw materials and keeps them warm for a first time to obtain a hot pressed semi-finished product, including the following steps: placing the first forming mold on the hot press; Placing the lower sponge sheet and the supporting elastic sheet on the first forming mold in sequence from bottom to top; Placing the shoe opening reinforcement sheet on the lower sponge sheet, and placing the shoe opening reinforcement sheet at the shoe opening of the shoe back; The shoe body reinforcement sheet is covered on the supporting elastic sheet and the shoe opening reinforcement sheet, and the buffer sheet is placed on the shoe body reinforcement sheet, wherein the buffer sheet is located at the middle and upper part of the shoe back; Covering the inner shoe sheet on the buffer sheet and the shoe body reinforcement sheet; The hot press machine hot-presses the raw material and keeps it warm for a first time to obtain a hot-pressed semi-finished product.

2. The shoe back hot pressing forming process according to claim 1, characterized in that The temperature range of the hot press for hot pressing the raw material is 150°C to 230°C, and the setting range of the first time is 120s to 300s.

3. The shoe back hot pressing forming process according to claim 1, characterized in that Before the step of fitting the upper edge of the outer shoe piece with the upper edge of the front end of the hot-pressed semi-finished product and sewing the upper edge of the outer shoe piece with the upper edge of the hot-pressed semi-finished product into one piece by the sewing tool, the following steps are also included: A cutting tool is provided for standby use, and the upper edge of the hot-pressed semi-finished product is sheared by the cutting tool.

4. The shoe back hot pressing forming process according to claim 1, characterized in that , turning the sewn outer shoe piece upward to the rear end of the hot-pressed semi-finished product, and laminating the outer shoe piece with the rear surface of the hot-pressed semi-finished product to obtain a laminating semi-finished product, comprising the following steps: An adhesive sheet and a heating device are provided for standby use, wherein the adhesive sheet is attached with hot melt adhesive; Laminating the adhesive sheet on the rear surface of the hot-pressed semi-finished product; The heating device heats the adhesive sheet to melt the hot melt adhesive; The sewn outer shoe piece is turned upward to the rear end of the hot-pressed semi-finished product and bonded to the adhesive sheet to obtain a bonded semi-finished product.

5. The shoe back hot pressing forming process according to claim 4, characterized in that One side of the adhesive sheet is sticky, and the sticky side of the adhesive sheet is bonded to the rear surface of the hot-pressed semi-finished product. The hot melt adhesive is attached to the other side of the adhesive sheet. The heating device is a heating bellows, and the heating bellows blows hot air to heat the adhesive sheet so that the hot melt adhesive melts.

6. The shoe back hot pressing forming process according to claim 1, characterized in that The temperature range of the hot press machine for hot pressing the hot pressed semi-finished product is 150°C to 230°C, and the setting range of the second time is 120s to 300s.

7. The shoe back hot pressing forming process according to claim 3, characterized in that After the rough shoe upper is obtained, the lower edge and side edges of the rough shoe upper can be sheared by the cutting tool.

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