A kind of shoe back upper hot pressing reverse packaging forming process and shoe back upper

Abstract

The present invention discloses a hot-pressing reverse-wrapping forming process for a shoe upper and a shoe upper, comprising: providing raw materials and an outer shoe piece for standby use, wherein a cotton piece is provided on one side of the outer shoe piece; placing the raw materials on a parting surface of a first forming mold, closing the first forming mold, hot-pressing the raw materials and keeping them warm for a first time to obtain a hot-pressed semi-finished product; thinning the upper edge of the cotton piece, and fitting and sewing the upper edge of the outer shoe piece to the edge of the shoe opening of the hot-pressed semi-finished product; turning the sewn outer shoe piece upward to the rear end of the hot-pressed semi-finished product, and fitting the cotton piece to the rear surface of the hot-pressed semi-finished product to obtain a rough blank for the shoe upper. The thinning of the upper edge of the cotton piece can facilitate the close fitting and sewing of the upper edge of the outer shoe piece and the edge of the shoe opening of the hot-pressed semi-finished product, and can avoid the problem of thickening of the shoe opening of the hot-pressed semi-finished product after the outer shoe piece is turned backward relative to the hot-pressed semi-finished product due to the setting of the cotton piece.

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 reverse packaging molding process and a shoe back upper. 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.

[0003] In order to save production process and make the rear surface of the formed shoe upper have a certain thickness, if the hot pressing molding process is adopted, it is generally necessary to stick cotton on the rear surface of the shoe upper during the preparation process, and change the shape and pattern of the rear surface of the shoe upper through the hot pressing process.

[0004] The cotton pasting process is relatively complicated and requires additional heating equipment to achieve the connection between the entire shoe back and the cotton sheet, which easily increases the labor intensity of workers and the production cost of the shoe back. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0006] In a first aspect, the present invention provides a hot-pressing reverse-wrapping forming process for a shoe upper, comprising: providing raw materials and an outer shoe piece for use, wherein a cotton piece is provided on one side of the outer shoe piece; placing the raw materials on a parting surface of a first forming mold, closing the first forming mold, hot-pressing the raw materials and keeping them warm for a first time to obtain a hot-pressed semi-finished product; thinning the upper edge of the cotton piece, and fitting and sewing the upper edge of the outer shoe piece to the edge of the shoe opening of the hot-pressed semi-finished product; turning the sewn outer shoe piece upward to the rear end of the hot-pressed semi-finished product, and fitting the cotton piece to the rear surface of the hot-pressed semi-finished product to obtain a rough shoe upper.

[0007] A hot-pressing reverse-wrapping forming process for a shoe upper provided in accordance with an embodiment of the present invention has at least the following beneficial effects: a raw material is placed on a parting surface of a first forming mold, the first forming mold is closed, and the raw material is formed into a hot-pressed semi-finished product under the hot-pressing and heat-insulating action of an external heating device. The hot-pressing process is beneficial for saving the process required for the sewing process, and is beneficial for reducing the production cost of preparing the shoe upper; a cotton sheet is attached to one side of the outer shoe piece, and the upper edge of the cotton sheet is thinned, which can facilitate the close fitting and sewing of the upper edge of the outer shoe piece and the edge of the shoe opening of the hot-pressed semi-finished product, and is beneficial for avoiding the problem of the rough shoe upper becoming thicker at the shoe opening after the outer shoe piece is flipped backward relative to the hot-pressed semi-finished product due to the setting of the cotton sheet; the sewn outer shoe piece is flipped upward to the hot-pressed semi-finished product The rear end of the shoe upper is formed by a hot pressing process, and the cotton sheet is fitted with the rear surface of the hot-pressed semi-finished product, which is beneficial to increasing the thickness of the rear surface of the shoe upper, and is beneficial to realizing the functions of subsequent hot-pressing patterns and shapes, and is beneficial to saving the preparation process of the cotton sheet and the hot-pressed semi-finished product, and is beneficial to reducing the production cost of the shoe upper. That is, the hot-pressing and reverse-wrapping molding process for the shoe upper uses a sewing and reverse-wrapping process to obtain a hot-pressed semi-finished product through a hot-pressing process, so that a edging structure is formed 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 upper produced by the hot-pressing and reverse-wrapping molding process for the shoe upper, and is beneficial to improving the comfort of human wearing. The combination of sewing and reverse-wrapping and the hot-pressing process makes it possible for no sewing lines to be seen on the outside of the shoe upper finished product, and is beneficial to ensuring the overall aesthetics of the shoe upper produced by the hot-pressing and reverse-wrapping molding process for the shoe upper.

[0008] According to some embodiments of the present invention, the present invention further comprises the following steps: placing the rough shoe upper blank on the parting surface of the second molding mold, and closing the second molding mold; hot pressing the rough shoe upper blank and keeping it warm for a second time to obtain a finished shoe upper.

[0009] The shoe back rough blank is placed on the parting surface of the second molding die, and the second molding die is closed. Under the heating and heat preservation effect of the external heating device, the hot pressed semi-finished product is connected to the outer shoe piece as a whole, that is, the shoe back rough blank is subjected to a second hot pressing after the sewing and turn-up is completed. The second hot pressing is beneficial to hot pressing the outer shoe piece and the hot pressed semi-finished product as a whole, which can make the internal structure of the shoe back rough blank more compact to a certain extent, and the connection between the sheets constituting the shoe back is tighter, which meets the use requirements of the shoe back hot pressing turn-up molding process, and can change the texture at the rear surface of the shoe back rough blank.

[0010] According to some embodiments of the present invention, before the step of attaching and sewing the upper edge of the outer shoe piece to the edge of the shoe opening of the hot-pressed semi-finished product, the following steps are also included:

[0011] A cutting tool is provided as a backup, and the upper edge of the hot-pressed semi-finished product is cut by the cutting tool.

[0012] Before fitting the upper edge of the outer shoe piece with the upper edge of the front end of the hot-pressed semi-finished product, it is necessary to cut the upper edge of the hot-pressed semi-finished product with a cutting tool so that the hot-pressed semi-finished product forms the shoe opening shape required by the finished shoe back. In conjunction with the setting of the outer shoe piece, the outer shoe piece can be wrapped over the incision on the upper edge of the hot-pressed semi-finished product, thereby avoiding the problem of the incision causing scratches to the human body.

[0013] According to some embodiments of the present invention, after the finished shoe upper is manufactured, the lower edge and the side edges of the finished shoe upper are sheared by a cutting tool.

[0014] After the shoe back is formed twice by hot pressing, it is necessary to use a cutting tool to cut the remaining material at the bottom edge and the side of the shoe back so that the shoe back is formed into a preset shape so as to cooperate with the shoe front and the sole to achieve the connection of the shoe body.

[0015] According to some embodiments of the present invention, before the step of thinning the upper edge of the cotton sheet, the following step is also included: trimming the upper edge of the outer shoe piece so that the upper edge of the outer shoe piece matches the edge of the shoe opening of the hot-pressed semi-finished product.

[0016] Before thinning the upper edge of the cotton sheet, it is also necessary to trim the upper edge of the outer shoe piece so that the upper edge of the outer shoe piece matches the edge of the shoe opening of the hot-pressed semi-finished product. For example, thinning along the trimmed upper edge of the cotton sheet by a peeling machine is helpful to make the upper edge of the outer shoe piece fit closely with the upper edge of the hot-pressed semi-finished product, and make the thinned part of the cotton sheet correspond to the edge of the shoe opening of the hot-pressed semi-finished product after the outer shoe piece is turned backward, which is helpful to avoid the problem of thickening of the shoe opening of the rough shoe back blank due to the obstruction of the cotton sheet.

[0017] According to some embodiments of the present invention, the step of laminating the cotton sheet to the rear surface of the hot-pressed semi-finished product includes the following steps:

[0018] and make the cotton sheet and the rear surface of the hot pressed semi-finished product fit together;

[0019] Sewing the left edge of the outer shoe piece and the left edge of the hot pressed semi-finished product into one piece;

[0020] Sewing the right edge of the outer shoe piece and the right edge of the hot pressed semi-finished product into one piece;

[0021] The lower edge of the outer shoe piece is sewn together with the lower edge of the hot pressed semi-finished product.

[0022] After the cotton sheet and the rear surface of the hot-pressed semi-finished product are bonded together, the left and right edges of the outer shoe piece can be sewn corresponding to the left and right edges of the hot-pressed semi-finished product respectively, and the lower edge of the outer shoe piece and the lower edge of the hot-pressed semi-finished product can be sewn, that is, the side and lower edges of the shoe back rough blank are sealed and connected, which is conducive to avoiding the problem of position displacement or wrinkles between the outer shoe piece and the hot-pressed semi-finished product during the hot pressing process of the shoe back rough blank.

[0023] 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 parting surface of the first molding mold in sequence from bottom to top.

[0024] 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 parting surface of 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 assist the user to put on the shoe.

[0025] 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 raw material on a parting surface of a first molding mold, closing the first molding mold, hot pressing the raw material and keeping it warm for a first time to obtain a hot pressed semi-finished product, comprises the following steps:

[0026] Placing the lower sponge sheet and the supporting elastic sheet on the parting surface of the first molding mold in sequence from bottom to top;

[0027] 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;

[0028] 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;

[0029] Cover the inner shoe piece on the buffer piece and the shoe body reinforcement piece;

[0030] The first molding die is closed to hot-press the raw material and keep it warm for a first time to obtain a hot-pressed semi-finished product.

[0031] 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 harder after molding, which is conducive to better wrapping the human foot. The shoe body reinforcement sheet covers the supporting elastic 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 improving 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 molded shoe back fit the human foot better.

[0032] In a second aspect, the present invention further provides a shoe back upper, which is manufactured using the shoe back upper hot pressing and reverse packaging molding process as shown in any one of the first aspects.

[0033] A shoe upper provided according to an embodiment of the present invention has at least the following beneficial effects: the shoe upper is prepared by a shoe upper hot-pressing and reverse-wrapping forming process, which is conducive to saving the process of the traditional sewing process and the production cost of the shoe upper; a cotton sheet is attached to one side of the outer shoe piece, and the upper edge of the cotton sheet is thinned, which can facilitate the upper edge of the outer shoe piece to be tightly fitted and sewn with the edge of the shoe opening of the hot-pressed semi-finished product, and is conducive to avoiding the problem that the shoe opening of the hot-pressed semi-finished product becomes thicker after the outer shoe piece is turned backward relative to the hot-pressed semi-finished product due to the setting of the cotton sheet; by setting the outer shoe piece in conjunction with the sewing and reverse-wrapping process, a edging structure is formed at the upper edge of the hot-pressed semi-finished product, which is conducive to reducing the scratches on the human body caused by the shoe upper made by the shoe upper hot-pressing and reverse-wrapping forming process, and is conducive to improving the comfort of human wearing, and the combination of sewing and reverse-wrapping and hot-pressing processes makes it possible to see no sewing lines on the outside of the shoe upper finished product, which is conducive to ensuring the overall aesthetics of the shoe upper made by the shoe upper hot-pressing and reverse-wrapping forming process.

[0034] In a third aspect, the present invention further provides a shoe production process, comprising the following steps:

[0035] Providing a shoe front, a shoe sole and a shoe back as shown in the second aspect as spare;

[0036] The left edge of the shoe back is connected to the left edge of the shoe front;

[0037] The right edge of the shoe back is connected to the right edge of the shoe front;

[0038] The lower edge of the shoe front and the lower edge of the shoe rear are both connected to the upper end of the sole.

[0039] A shoe production process provided by an embodiment of the present invention has at least the following beneficial effects: the shoe production process adopts a shoe back upper prepared by a shoe back upper hot-pressing reverse-wrapping molding process, which is beneficial to saving the process of traditional sewing technology and beneficial to saving the production cost of shoes; the left edge of the shoe back upper is connected to the left edge of the shoe front upper; the right edge of the shoe back upper is connected to the right edge of the shoe front upper; the lower edge of the shoe front upper and the lower edge of the shoe back upper are both connected to the upper end of the sole; a cotton sheet is attached to one side of the outer shoe piece, and the upper edge of the cotton sheet is thinned, which can facilitate the upper edge of the outer shoe piece to be connected to the hot-pressed semi-soled shoe piece. The edges of the shoe openings of the finished product are tightly fitted and sewn, which helps to avoid the problem of the shoe openings becoming thicker after the outer shoe piece is flipped backward relative to the hot-pressed semi-finished product due to the setting of the cotton piece; through the setting of the outer shoe piece and the sewing and turning-up process, a edging structure is formed at the upper edge of the hot-pressed semi-finished product, which helps to reduce the scratches on the human body caused by the shoes made using the shoe production process, and helps to improve the comfort of human wearing; and the combination of sewing and turning-up and hot pressing processes makes it impossible to see the sewing lines on the outside of the finished shoe back, which helps to ensure the overall aesthetics of the shoes made using the shoe production process.

[0040] In a fourth aspect, the present invention further provides a pair of shoes, which are manufactured using the shoe production process as shown in the third aspect.

[0041] A shoe provided according to an embodiment of the present invention has at least the following beneficial effects: the shoe prepared by the shoe production process is conducive to saving the process of traditional sewing process, and is conducive to saving the production cost of the shoe; a cotton sheet is attached to one side of the outer shoe piece, and the upper edge of the cotton sheet is thinned, which can facilitate the upper edge of the outer shoe piece to be tightly fitted and sewn with the edge of the shoe opening of the hot-pressed semi-finished product, and is conducive to avoiding the problem that the shoe opening of the shoe becomes thicker after the outer shoe piece is turned backward relative to the hot-pressed semi-finished product due to the setting of the cotton sheet; through the setting of the outer shoe piece and the sewing and wrapping process, a edging structure is formed at the upper edge of the hot-pressed semi-finished product, which is conducive to reducing the scratches on the human body caused by the shoes made by the shoe production process, and is conducive to improving the comfort of human body wearing, and the combination of sewing and wrapping and hot pressing process makes it possible to see the sewing line on the outside of the finished shoe back, which is conducive to ensuring the overall aesthetics of the shoes made by the shoe production process.

[0042] 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

[0043] 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:

[0044] Figure 1A flow chart of a hot pressing and reverse packaging forming process for a shoe back provided by an embodiment of the present invention;

[0045] Figure 2 A flow chart of a hot pressing and reverse packaging forming process for a shoe back provided by an embodiment of the present invention;

[0046] Figure 3 A flow chart of a hot pressing and reverse packaging forming process for a shoe back provided by an embodiment of the present invention;

[0047] Figure 4 A flow chart of a hot pressing and reverse packaging forming process for a shoe back provided by an embodiment of the present invention;

[0048] Figure 5 A schematic structural diagram of a shoe upper provided by an embodiment of the present invention.

[0049] In the attached drawings: 110 - inner shoe piece; 120 - outer shoe piece; 130 - edge binding; 200 - supporting elastic piece. DETAILED DESCRIPTION

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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 in combination with the specific content of the technical solution.

[0055] Combine the following Figure 1-Figure 5 Embodiments of the present invention are described.

[0056] Example 1, see Figure 1 The embodiment of the present invention provides a hot pressing and reverse packaging forming process for a shoe back, comprising the following steps:

[0057] S100: providing raw materials and an outer shoe sheet 120 for standby use, wherein a cotton sheet is provided on one side of the outer shoe sheet 120;

[0058] S200: placing the raw material on the parting surface of the first molding mold, closing the first molding mold, hot pressing the raw material and keeping it warm for a first time to obtain a hot pressed semi-finished product;

[0059] S300: thinning the upper edge of the cotton sheet, and attaching and sewing the upper edge of the outer shoe sheet 120 to the edge of the shoe opening of the hot-pressed semi-finished product;

[0060] S400: turning the sewn outer shoe sheet 120 upward to the rear end of the hot-pressed semi-finished product, and fitting the cotton sheet to the rear surface of the hot-pressed semi-finished product to obtain a rough shoe upper;

[0061] S500: placing the rough blank of the shoe upper on the parting surface of the second molding mold, and closing the second molding mold;

[0062] S600: hot pressing the rough shoe upper blank and keeping it warm for a second time to obtain a finished shoe upper.

[0063] In step S100, the outer shoe piece 120 can be connected to the cotton piece by gluing, so that the cotton piece is attached to one side of the outer shoe piece 120. The cotton piece plays a role in connecting the outer shoe piece 120 and the hot-pressed semi-finished product, and can increase the thickness of the rear surface of the shoe upper rough blank to a certain extent, so as to change the pattern and shape of the rear surface of the shoe upper rough blank by hot pressing. The style of the first molding die can be adaptively modified and adjusted according to actual production requirements.

[0064] See also Figure 2 The hot pressing and reverse wrapping molding process for the back of the shoe also includes the following steps before the step of attaching and sewing the upper edge of the outer shoe sheet 120 to the edge of the shoe opening of the hot pressing semi-finished product:

[0065] S700: A cutting tool is provided for use, and the upper edge of the hot-pressed semi-finished product is cut by the cutting tool.

[0066] Before the upper edge of the outer shoe piece 120 is attached to 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 so that the hot-pressed semi-finished product forms the shoe opening shape required by the shoe upper finished product, and with the arrangement of the outer shoe piece 120, the outer shoe piece 120 can be covered with the cut on the upper edge of the hot-pressed semi-finished product after being reversed, thereby avoiding the problem of scratching the human body caused by the cut. The cutting tool can be scissors, a cutting knife, etc.

[0067] After the finished shoe upper is obtained in step S600, the lower edge and side edges of the finished shoe upper are cut by a cutting tool. The finished shoe upper after two hot pressing processes needs to be cut by a cutting tool to form the finished shoe upper into a preset shape so as to be connected to the shoe body in coordination with the shoe upper and the sole.

[0068] See also Figure 2 The hot pressing and reverse wrapping forming process for the shoe back provided by the embodiment of the invention further includes the following steps before the step of thinning the upper edge of the cotton sheet:

[0069] S800: Trim the upper edge of the outer shoe piece 120 so that the upper edge of the outer shoe piece 120 matches the edge of the shoe opening of the hot-pressed semi-finished product.

[0070] Before thinning the upper edge of the cotton sheet, it is also necessary to trim the upper edge of the outer shoe piece 120 so that the upper edge of the outer shoe piece 120 matches the edge of the shoe opening of the hot-pressed semi-finished product. For example, thinning along the trimmed upper edge of the cotton sheet by an external peeling machine is helpful to make the upper edge of the outer shoe piece 120 fit closely with the upper edge of the hot-pressed semi-finished product, and make the thinned part of the cotton sheet correspond to the edge of the shoe opening of the hot-pressed semi-finished product after the outer shoe piece 120 is turned backwards, which is helpful to avoid the problem of thickening of the shoe opening of the rough shoe back due to the obstruction of the cotton sheet.

[0071] See also Figure 3 In step S400, the step of laminating the cotton sheet with the rear surface of the hot-pressed semi-finished product also includes the following steps:

[0072] S410: and making the cotton sheet and the back surface of the hot-pressed semi-finished product fit together. The relative position relationship between the cotton sheet and the hot-pressed semi-finished product can be adjusted by manual pressing by workers, and the cotton sheet and the back surface of the hot-pressed semi-finished product are kept in close contact.

[0073] S420: Sew the left edge of the outer shoe piece 120 and the left edge of the hot-pressed semi-finished product together; that is, seal the left opening of the rough back of the shoe, which is conducive to maintaining the connection stability between the outer shoe piece 120 and the hot-pressed semi-finished product.

[0074] S430: Sew the right edge of the outer shoe piece 120 and the right edge of the hot-pressed semi-finished product together; that is, seal the right opening of the shoe back rough blank, which is conducive to maintaining the connection stability between the outer shoe piece 120 and the hot-pressed semi-finished product.

[0075] S440: Sewing the lower edge of the outer shoe piece 120 and the lower edge of the hot-pressed semi-finished product into one piece, that is, sealing the lower end opening of the shoe back rough blank, which is conducive to maintaining the connection stability between the outer shoe piece 120 and the hot-pressed semi-finished product.

[0076] The hot-pressing and reverse-wrapping process for the shoe back upper tightly connects the outer shoe piece 120 with the hot-pressed semi-finished product by means of sewing and sealing, which helps to avoid the problem of position displacement or wrinkles between the outer shoe piece 120 and the hot-pressed semi-finished product during the hot-pressing process of the shoe back upper rough blank.

[0077] Compared with the process of manually sticking the cotton sheet to the back surface of the hot-pressed semi-finished product, the cotton sheet is sprayed with glue, and after the cotton sheet is heated by an external heating device to melt the glue of the cotton sheet, the outer shoe piece 120 is flipped backwards and attached to the cotton sheet.

[0078] The hot-pressing and reverse-wrapping process for the shoe back provided in the embodiment of the invention saves the need to additionally laminate the cotton sheet with the rear surface of the hot-pressed semi-finished product by first bonding the cotton sheet to the outer shoe piece 120, and helps to avoid the problem of thickening of the shoe mouth of the shoe back rough blank after reverse-wrapping by thinning the cotton sheet. The outer shoe piece 120 is connected to the hot-pressed semi-finished product by sewing and sealing the left side, right side and bottom side, which helps to avoid the need to heat the cotton sheet by an external heating device so that the glue attached to the cotton sheet can be melted before it can be connected to the outer shoe piece 120.

[0079] See also Figure 4That is, the hot pressing and reverse wrapping molding process for the shoe upper provided by the embodiment of the present invention can effectively save the production cost of preparing the shoe upper compared to the process that requires sticking cotton on the rear surface of the shoe upper alone.

[0080] In step S200, the raw materials include a lower sponge sheet, a supporting elastic sheet 200, an inner shoe sheet 110, a shoe mouth reinforcement sheet, a shoe body reinforcement sheet and a buffer sheet. The raw materials are placed on the parting surface of the first molding mold, the first molding mold is closed, and the raw materials are hot-pressed and kept warm for a first time to obtain a hot-pressed semi-finished product, including the following steps:

[0081] S210: placing the lower sponge sheet and the supporting elastic sheet 200 on the parting surface of the first molding mold from bottom to top in sequence; specifically, the first molding mold is provided with an ejector pin, through which the lower sponge sheet is placed, and the setting 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 mold 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 materials with good supporting performance and elasticity such as Gangbao, Haicui, TPU (thermoplastic polyurethane elastomer), TPR (thermoplastic rubber), TPE (thermoplastic elastomer), TPEE (thermoplastic polyester elastomer), etc. The hot pressing and reverse packaging molding process of the shoe back has a supporting elastic sheet 200 built into the shoe back. 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 support of the supporting elastic sheet 200, it helps the user to put on the shoe.

[0082] S220: placing a 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 opening fixing sheet can be a shaping yarn or other materials with relatively high hardness, so that the hardness of the molded shoe back at the shoe opening is higher, which is helpful to avoid the problem of poor shoe wrapping caused by the shoe opening being loosened during the user's wearing and taking off process.

[0083] S230: Cover the supporting elastic sheet and the shoe mouth reinforcement sheet with a shoe body reinforcement sheet, and place a buffer sheet on the shoe body reinforcement sheet, wherein the buffer sheet is located at the middle and upper part of the shoe back. The shoe body reinforcement sheet can be a shaping yarn or other materials with relatively high hardness. Considering that the structure of the sponge is too loose, the setting 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 reverse packaging molding process.

[0084] 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.

[0085] S240: 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.

[0086] S250: The first molding mold is closed, and the raw material is hot pressed and kept warm for the first time to obtain a hot pressed semi-finished product. The heating and heat preservation of the raw material can be achieved by a hot press. The temperature range of the hot press for the first hot pressing of the raw material 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 for the first time is 120s to 300s. Preferably, the closing and heat preservation time of the hot press can be set to 200s. By setting the hot pressing temperature and heat preservation time, the sponge is matured and a high production efficiency is maintained to meet the requirements of the hot pressing and reverse packaging molding process of the back of the shoe.

[0087] In step S500, the second molding die can be provided with additional patterns, the rough shoe upper after sewing and wrapping is completed can be placed in the second molding die, and the hot press machine performs hot pressing on the rough shoe upper and keeps it warm for a second time, that is, the rough shoe upper is subjected to a second hot pressing after sewing and wrapping is completed. The second hot pressing is conducive to hot pressing the outer shoe piece 120 and the hot pressing semi-finished product into one, which can make the internal structure of the rough shoe upper more compact to a certain extent, and the connection between the sheets is tighter, so as to meet the use requirements of the hot pressing and wrapping molding process of the shoe upper. Through the pattern setting on the second molding die and the pressure control of the hot press machine, the outer patterns and lines can be formed after the shoe upper is formed, thereby improving the overall aesthetics of the formed shoe upper. The outer shoe piece 120 can be made of materials such as wear-resistant and scratch-resistant, such as various leathers, canvas, etc.

[0088] 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 insulation time of the hot press can be set to 200s. By setting the hot pressing temperature and insulation time, the sponge is matured and a high production efficiency is maintained, thereby meeting the process requirements of hot pressing and reverse packaging of the back of the shoe.

[0089] Example 2, see Figure 5 The embodiment of the present invention provides a shoe upper manufactured by the shoe upper hot pressing and reverse packaging molding process as in the first embodiment.

[0090] The shoe upper includes an inner shoe piece 110 and an outer shoe piece 120. The outer side surface of the inner shoe piece 110 is connected to the inner side surface of the outer shoe piece 120. The upper edge of the outer shoe piece 120 is folded inward to form a edging 130. The edging 130 covers the upper end of the inner shoe piece 110. The outer side surface of the edging 130 is connected to the inner side surface of the inner shoe piece 110.

[0091] The shoe back is prepared into a hot-pressed semi-finished product through a hot-pressing molding process, which is beneficial to saving the process of traditional sewing process and the production cost of the shoe back; a cotton sheet is attached to one side of the outer shoe piece 120, and the upper edge of the cotton sheet is thinned, which can facilitate the upper edge of the outer shoe piece 120 to be tightly fitted and sewn with the edge of the shoe opening of the hot-pressed semi-finished product, which is beneficial to avoid the problem that the shoe back rough blank becomes thicker at the shoe opening after the outer shoe piece 120 is turned backward relative to the hot-pressed semi-finished product due to the setting of the cotton sheet; through the setting of the outer shoe piece 120 and the sewing and wrapping process, a edging 130 structure is formed 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 hot-pressing and wrapping molding process of the shoe back, and is beneficial to improve the comfort of human wearing, and the combination of sewing and wrapping and hot pressing processes makes it possible to see no sewing lines on the outside of the finished shoe back, which is beneficial to ensure the overall aesthetics of the shoe back made by the hot-pressing and wrapping molding process of the shoe back.

[0092] Embodiment 3, the embodiment of the present invention provides a shoe production process, comprising the following steps:

[0093] Provide a shoe front, a shoe sole and a shoe back as shown in the second embodiment for use;

[0094] The left edge of the shoe back is connected to the left edge of the shoe front;

[0095] The right edge of the shoe back is connected to the right edge of the shoe front;

[0096] The lower edge of the shoe front and the lower edge of the shoe rear are both connected to the upper end of the sole.

[0097] The production process of the shoe adopts the preparation of the shoe back upper made by the hot-pressing reverse-wrapping molding process of the shoe back upper, which is conducive to saving the process of the traditional sewing process and saving the production cost of the shoe; a cotton sheet is attached to one side of the outer shoe piece 120, and the upper edge of the cotton sheet is thinned, which can facilitate the upper edge of the outer shoe piece 120 to be tightly fitted and sewn with the edge of the shoe opening of the hot-pressed semi-finished product, which is conducive to avoiding the problem that the shoe opening of the shoe becomes thicker after the outer shoe piece 120 is turned backward relative to the hot-pressed semi-finished product due to the setting of the cotton sheet; through the setting of the outer shoe piece 120 and the sewing reverse-wrapping process, a edging 130 structure is formed at the upper edge of the hot-pressed semi-finished product, which is conducive to reducing the scratches of the shoes made by the production process of the shoe on the human body, and is conducive to improving the comfort of human body wearing, and the combination of sewing reverse-wrapping and hot-pressing process makes it possible to see the sewing line on the outside of the shoe back upper finished product, which is conducive to ensuring the overall aesthetics of the shoes made by the production process of the shoe.

[0098] Embodiment 4: This embodiment of the present invention provides shoes manufactured using the shoe manufacturing process shown in Embodiment 3.

[0099] The shoes prepared by the shoe production process are conducive to saving the process of traditional sewing process and saving the production cost of the shoes; a cotton sheet is attached to one side of the outer shoe piece 120, and the upper edge of the cotton sheet is thinned, which can facilitate the upper edge of the outer shoe piece 120 to be tightly fitted and sewn with the edge of the shoe opening of the hot-pressed semi-finished product, which is conducive to avoiding the problem of thickening of the shoe opening after the outer shoe piece 120 is flipped backward relative to the hot-pressed semi-finished product due to the setting of the cotton sheet; through the setting of the outer shoe piece 120 and the sewing and wrapping process, a edging 130 structure is formed at the upper edge of the hot-pressed semi-finished product, which is conducive to reducing the scratches on the human body caused by the shoes made by the shoe production process, and is conducive to improving the comfort of human wearing, and the combination of sewing and wrapping and hot pressing process makes it possible to see the sewing line on the outside of the finished shoe back, which is conducive to ensuring the overall aesthetics of the shoes made by the shoe production process.

[0100] 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 and reverse packaging process for the back of a shoe, characterized in that ,include: Providing raw materials and outer shoe pieces for standby use, wherein a cotton piece is provided on one side of the outer shoe piece; Placing the raw material on a parting surface of a first molding die, closing the first molding die, hot pressing the raw material and keeping it warm for a first time to obtain a hot pressed semi-finished product; The upper edge of the cotton sheet is thinned, and the upper edge of the outer shoe sheet is attached to the edge of the shoe opening of the hot-pressed semi-finished product and sewn; Turning the sewn outer shoe piece upward to the rear end of the hot-pressed semi-finished product, and fitting the cotton piece to the rear surface of the hot-pressed semi-finished product to obtain a rough shoe upper; The following steps are also included: Placing the rough shoe upper on the parting surface of the second molding die, and closing the second molding die; hot pressing the rough shoe upper blank and keeping it warm for a second time to obtain a finished shoe upper; Before the step of attaching and sewing the upper edge of the outer shoe piece to the edge of the shoe opening of the hot-pressed semi-finished product, the following steps are also included: providing a cutting tool for standby, and cutting the upper edge of the hot-pressed semi-finished product by the cutting tool; After the finished shoe upper is obtained, the lower edge and the side edge of the finished shoe upper are sheared by the cutting tool; Before the step of thinning the upper edge of the cotton sheet, the following steps are also included: trimming the upper edge of the outer shoe sheet so that the upper edge of the outer shoe sheet is matched with the edge of the shoe opening of the hot-pressed semi-finished product; 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 parting surface of the first molding mold in sequence from bottom to top; The supporting elastic sheet is made of thermoplastic elastomer material; The raw material further includes a shoe mouth reinforcement sheet, a shoe body reinforcement sheet and a buffer sheet; placing the raw material on a parting surface of a first molding mold, closing the first molding mold, hot pressing the raw material and keeping it warm for a first time to obtain a hot pressed semi-finished product, including the following steps: Placing the lower sponge sheet and the supporting elastic sheet on the parting surface of the first molding 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 first molding die is closed to hot-press the raw material and keep it warm for a first time to obtain a hot-pressed semi-finished product.

2. The shoe back hot pressing and reverse wrapping forming process according to claim 1 is characterized in that , and making the cotton sheet fit with the rear surface of the hot pressed semi-finished product, comprising the following steps: and making the cotton sheet fit with the rear surface of the hot pressed semi-finished product; Sewing the left edge of the outer shoe piece and the left edge of the hot-pressed semi-finished product into one piece; The right edge of the outer shoe piece is sewn together with the right edge of the hot-pressed semi-finished product; and the lower edge of the outer shoe piece is sewn together with the lower edge of the hot-pressed semi-finished product.

3. A shoe back, characterized in that , it is made by the shoe back upper hot pressing and reverse packaging molding process as described in claim 1 or 2.

4. A shoe production process, characterized in that: The steps include: Providing a shoe front upper, a shoe sole and a shoe rear upper as claimed in claim 3 for use; The left edge of the shoe rear upper is connected to the left edge of the shoe front upper; The right edge of the shoe rear upper is connected to the right edge of the shoe front upper; The lower edge of the shoe front and the lower edge of the shoe rear are both connected to the upper end of the sole.

5. A shoe, characterized in that: The shoe is made by using the shoe production process as claimed in claim 4.

Images