CN114190654B - A kind of hot pressing forming process of shoe back - Google Patents
A kind of hot pressing forming process of shoe back Download PDFInfo
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- CN114190654B CN114190654B CN202111347041.4A CN202111347041A CN114190654B CN 114190654 B CN114190654 B CN 114190654B CN 202111347041 A CN202111347041 A CN 202111347041A CN 114190654 B CN114190654 B CN 114190654B
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- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000007731 hot pressing Methods 0.000 title claims abstract description 47
- 230000008569 process Effects 0.000 title claims abstract description 44
- 239000011265 semifinished product Substances 0.000 claims abstract description 94
- 239000002994 raw material Substances 0.000 claims abstract description 36
- 238000009958 sewing Methods 0.000 claims abstract description 31
- 239000000853 adhesive Substances 0.000 claims description 42
- 230000001070 adhesive effect Effects 0.000 claims description 42
- 238000000465 moulding Methods 0.000 claims description 28
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000004831 Hot glue Substances 0.000 claims description 16
- 230000002787 reinforcement Effects 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 13
- 238000010030 laminating Methods 0.000 claims description 5
- 238000007723 die pressing method Methods 0.000 claims 1
- 239000000155 melt Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 description 18
- 238000004321 preservation Methods 0.000 description 14
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 8
- 230000003139 buffering effect Effects 0.000 description 5
- 238000007493 shaping process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000007373 indentation Methods 0.000 description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 description 4
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229920006346 thermoplastic polyester elastomer Polymers 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0205—Uppers; Boot legs characterised by the material
- A43B23/0235—Different layers of different material
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0245—Uppers; Boot legs characterised by the constructive form
- A43B23/025—Uppers; Boot legs characterised by the constructive form assembled by stitching
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0245—Uppers; Boot legs characterised by the constructive form
- A43B23/0255—Uppers; Boot legs characterised by the constructive form assembled by gluing or thermo bonding
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0245—Uppers; Boot legs characterised by the constructive form
- A43B23/026—Laminated layers
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0245—Uppers; Boot legs characterised by the constructive form
- A43B23/028—Resilient uppers, e.g. shock absorbing
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D11/00—Machines for preliminary treatment or assembling of upper-parts, counters, or insoles on their lasts preparatory to the pulling-over or lasting operations; Applying or removing protective coverings
- A43D11/12—Machines for forming the toe part or heel part of shoes, with or without use of heat
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
- A43D8/02—Cutting-out
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B15/00—Machines for sewing leather goods
- D05B15/02—Shoe sewing machines
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
本发明公开了一种鞋后帮热压成型工艺，包括：提供原料、第一成型模具、外鞋片、热压机和缝纫工具备用；将所述第一成型模具放置在所述热压机上，并将所述原料放置在所述第一成型模具上，所述热压机对所述原料进行热压并保温第一时间，以得到热压半成品；将所述外鞋片的上边沿与所述热压半成品前端的上边沿贴合，所述缝纫工具将所述外鞋片的上边沿与所述热压半成品的上边沿缝纫为一体；将车缝完成后的所述外鞋片向上翻转至所述热压半成品的后端，并使所述外鞋片与所述热压半成品的后表面贴合，热压一体成型的工艺流程简单且可避免片材的连接处之间产生缝纫线的问题，并配合车缝反包工艺，使得鞋后帮的外部无缝纫线，保证成型该鞋后帮的整体美观性。
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
The invention relates to the technical field of shoe heel counter production processes, in particular to a shoe heel counter hot-press molding process.
Background
Most of the shoe counter of the existing shoes are manufactured by adopting a sewing forming process, the sewing forming process can lead to the complicated manufacturing process of the shoe counter, thereby increasing the labor time and labor intensity of workers, reducing the production efficiency of the shoe counter, and the joint of sheets forming the shoe counter can generate more sewing threads, so that the problem of unattractive shoe counter is easily caused.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art.
The invention provides a hot-press forming process of a shoe heel, which comprises the following steps of providing raw materials, a first forming die, an outer shoe piece, a hot press and a sewing tool for standby, placing the first forming die on the hot press, placing the raw materials on the first forming die, hot-pressing the raw materials by the hot press and preserving heat for a first time to obtain a hot-press semi-finished product, attaching the upper edge of the outer shoe piece to the upper edge of the front end of the hot-press semi-finished product, sewing the upper edge of the outer shoe piece and the upper edge of the hot-press semi-finished product into a whole by the sewing tool, turning the sewn outer shoe piece upwards to the rear end of the hot-press semi-finished product, and attaching the outer shoe piece to the rear surface of the hot-press semi-finished product to obtain an attached semi-finished product.
The hot-press molding process for the shoe counter has the advantages that at least the first molding die is arranged on a hot press, raw materials are placed on the first molding die, the raw materials are hot-pressed and kept warm for a first time by the hot press, namely, the raw materials are hot-pressed into a hot-press semi-finished product through the first hot pressing of the hot press, compared with the traditional shoe counter made by sewing, the hot-press molding process is simpler in processing flow, the labor time and labor intensity of workers are reduced, the production efficiency of the shoe counter is improved, the hot-press integrated molding process is beneficial to avoiding the problem that more stitching lines are generated at the connecting positions of sheets constituting the shoe counter, after the raw materials are hot-pressed by the hot press to obtain a hot-press semi-finished product, the upper edge of an outer shoe sheet is adhered to the upper edge of the hot-press semi-finished product through the hot press machine, the sewing tool enables the upper edge of the outer shoe sheet to be integrated with the upper edge of the hot-press semi-finished product, compared with the traditional shoe counter made by sewing, the hot-press process is enabled to be adhered to the rear surface of the semi-finished product, the upper is good in appearance, the hot-press welt is formed by the hot-press process, the hot-press process is not to be wrapped, the upper is easy to be worn, the human body is good, the finished product is easy to be rolled, the finished is easy to have the appearance, and the finished product is easy to be worn, and the human body is easy to be manufactured by the hot-press process, and the counter is good to have the appearance.
According to some embodiments of the invention, the method further comprises the steps of providing a second forming die and a hot press for standby, placing the second forming die on the hot press, placing the laminated semi-finished product on the second forming die, and carrying out hot pressing and heat preservation on the laminated semi-finished product for a second time by the hot press to obtain the shoe heel counter rough blank.
The laminating semi-manufactured goods can be placed in the second forming die, the hot press carries out hot pressing and heat preservation for a second time on the laminating semi-manufactured goods, namely, the second hot pressing is carried out on the laminating semi-manufactured goods after the sewing is reversely wrapped, the second hot pressing is favorable for enabling the outer shoe plates and the hot pressing semi-manufactured goods to be integrated into a whole, the internal structure of the shoe heel counter rough blank can be more compact to a certain extent, the connection between the sheets forming the shoe heel counter is more compact, and the use requirement of the shoe heel counter hot pressing forming process is met.
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, which are sequentially placed on the first molding die from bottom to top.
Specifically, the raw materials that provide include sponge piece, support elastic piece and interior shoe piece down, and sponge piece, support elastic piece and interior shoe piece from down upwards place in proper order on first forming die, and the hot pressing semi-manufactured goods embeds promptly has the support elastic piece, and the support elastic piece be favorable to supporting and resilience effect to the shoes back group is whole, can assist the user to stretch into the welt with the foot after pressing the shoes back group down, thereby the support elastic piece can rebound voluntarily and assist the user to realize the dress of shoes.
According to some embodiments of the present invention, the raw material further includes a welt reinforcing sheet, a shoe body reinforcing sheet, and a buffer sheet, the first molding die is placed on a hot press, the raw material is placed on the first molding die, and the hot press performs hot pressing on the raw material and heat preservation for a first time to obtain a hot pressed semi-finished product, comprising the steps of:
the method comprises the steps of placing a first forming die on a hot press, placing a lower sponge sheet and a supporting elastic sheet on the first forming die from bottom to top in sequence, placing a shoe opening reinforcing sheet on the lower sponge sheet, placing a shoe opening of a shoe heel, covering a shoe body reinforcing sheet on the elastic supporting sheet and the shoe opening reinforcing sheet, placing a buffer sheet on the shoe body reinforcing sheet, placing the buffer sheet on the middle upper part of the shoe heel, covering an inner shoe sheet on the buffer sheet and the shoe body reinforcing sheet, and hot-pressing raw materials by the hot press and preserving heat for a first time to obtain a hot-pressed semi-finished product.
The raw materials that provide include not only lower sponge piece, support elastic piece and interior shoe piece, still include the shoe mouth reinforcement piece, shoes body reinforcement piece and buffering piece, the shoe mouth reinforcement piece is placed on lower sponge piece, and place the shoe mouth department at shoes back group, the shoe mouth reinforcement piece be favorable to making the shoe mouth of shoes back group after the shaping harder, be favorable to playing better parcel effect to human foot, shoes body reinforcement piece covers on elastic support piece and shoes mouth reinforcement piece, shoes body reinforcement piece's be provided with be favorable to making shoes back group holistic stretch-proofing performance better, be favorable to increasing the durability of shoes back group after the shaping, the buffering piece is placed on shoes body reinforcement piece, buffering piece is located the well upper portion of shoes back group, the setting of buffering piece can make the lower extreme of shoes back group form the recess that is used for the catching the heel, in human foot's motion process, can catch human foot effectively, and make behind the shaping shoes with the laminating nature of human foot better.
According to some embodiments of the invention, the temperature range at which the hot press performs hot pressing of the raw material is 150 ℃ to 230 ℃ and the first time is set to be 120s to 300s.
The temperature range of the hot press for carrying out the first hot pressing on the raw materials is 150 ℃ to 230 ℃, the heat preservation time is 120s to 300s, and the sponge is mature and keeps higher production efficiency through the arrangement of the hot pressing temperature and the heat preservation time, so that the technological requirement of the hot press forming of the shoe heel counter is met.
According to some embodiments of the invention, before the step of attaching the upper edge of the outer shoe sheet to the upper edge of the front end of the hot-pressed semi-finished product, the sewing tool sews the upper edge of the outer shoe sheet and the upper edge of the hot-pressed semi-finished product into a whole, the method further comprises the step of providing a cutting tool for standby, and cutting the upper edge of the hot-pressed semi-finished product by the cutting tool.
Before the upper edge of the outer shoe piece 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 is cut through a cutting tool so as to form a shape required by the finished product, and the outer shoe piece is attached to the hot-pressed semi-finished product.
According to some embodiments of the present invention, the sewn outer shoe sheet is turned upwards to the rear end of the hot-pressed semi-finished product, and the outer shoe sheet is attached to the rear surface of the hot-pressed semi-finished product to obtain an attached semi-finished product, and the method comprises the steps of providing an adhesive sheet and a heating device for standby, wherein the adhesive sheet is attached with hot melt adhesive; the method comprises the steps of bonding an adhesive sheet on the rear surface of a hot-pressed semi-finished product, heating the adhesive sheet by a heating device to melt the hot melt adhesive, and turning the sewn outer shoe piece upwards to the rear end of the hot-pressed semi-finished product and bonding the outer shoe piece with the adhesive sheet to obtain a bonded semi-finished product.
The adhesive sheet is adhered with hot melt adhesive, one surface of the adhesive sheet is adhered to the rear surface of the hot-pressed semi-finished product, and the adhesive sheet is heated by the heating device, so that the hot melt adhesive in the adhesive sheet is melted, the adhesive can be adhered to the backward turned outer shoe sheet, the adhesion and preliminary shaping of the outer shoe sheet and the hot-pressed semi-finished product are completed, and preparation is made for subsequent second hot pressing.
According to some embodiments of the invention, one side of the adhesive sheet has adhesiveness, the side of the adhesive sheet having adhesiveness is adhered to the rear surface of the hot-pressed semi-finished product, the hot melt adhesive is adhered 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 is melted.
Before the adhesive patch is adhered to the hot-pressed semi-finished product, hot melt adhesive is sprayed on the surface of the adhesive patch so as to be adhered to the outer shoe sheet, and after one sticky surface of the adhesive patch is adhered to the rear surface of the hot-pressed semi-finished product, the hot melt adhesive on the other surface of the adhesive patch is melted in a hot air blowing mode through the heating bellows, so that the other surface of the adhesive patch also has certain tackiness, and the adhesive patch is adhered to the outer shoe sheet.
According to some embodiments of the invention, the hot press is configured to heat press the hot pressed semi-finished product at a temperature in a range of 150 ℃ to 230 ℃ and for a second time in a range of 120s to 300s.
The temperature range of the hot press for carrying out secondary hot pressing on the hot-pressed semi-finished product is 150 ℃ to 230 ℃, the setting range of the second time is 120s to 300s, the adhesive sheet can be a sponge product, the sponge is mature through the setting of the hot-pressing temperature and the heat preservation time, the higher production efficiency is kept, and the technological requirement of the shoe heel counter hot-press molding is met.
According to some embodiments of the invention, after the shoe heel counter blank is manufactured, the lower edge and the side edges of the shoe heel counter blank can be sheared by a cutting tool.
The heel counter rough blank after twice hot press molding is cut by a cutting tool, and the rest materials on the lower edge and the side edge of the heel counter rough blank are cut, so that the heel counter rough blank forms a preset shape, and the shoe body is manufactured by matching with the vamp and the sole.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a main flow chart of a hot press molding process for a shoe heel counter according to an embodiment of the present invention;
FIG. 2 is an auxiliary flow chart of a hot press molding process for a shoe heel counter according to an embodiment of the present invention;
FIG. 3 is an auxiliary flow chart of a hot press molding process for shoe counter provided by an embodiment of the invention;
Fig. 4 is a schematic structural diagram of a product manufactured by a hot press molding process for a heel counter according to an embodiment of the present invention.
In the attached drawings, 110-inner shoe pieces, 120-outer shoe pieces, 130-edge wrapping and 200-supporting elastic pieces.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a number is not quantitative, and the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated. In addition, three parallel schemes are presented and/or represented throughout, e.g., a and/or B represent a scheme that is met by a, a scheme that is met by B, or a scheme that is met by a and B simultaneously.
In the description of the present invention, there are phrases containing a plurality of parallel features, wherein the definition of a phrase is defined as the nearest feature, for example B, C disposed on A, E connected with D, and the meaning that B is disposed on A, E is connected with D, and C is not defined, but the definition of a phrase indicating the relationship between features, such as "disposed at intervals", "arranged in a ring", etc., does not belong to this category. The phrase preceded by a "homonym" indicates that all features in the phrase are defined, e.g., B, C, D, all disposed on a, and B, C and D are both disposed on a.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Embodiments of the present invention are described below in conjunction with fig. 1-4.
Referring to fig. 1 and 2, an embodiment of the present invention provides a hot press molding process for a heel counter, which includes the following steps:
S100, providing raw materials, a first forming die, an outer shoe piece 120, a hot press and a sewing tool for standby;
S200, placing the first forming die on a hot press, placing raw materials on the first forming die, and carrying out hot pressing and heat preservation on the raw materials for a first time by the hot press to obtain a hot-pressed semi-finished product;
S300, attaching the upper edge of the outer shoe piece 120 to the upper edge of the front end of the hot-pressed semi-finished product, and sewing the upper edge of the outer shoe piece 120 and the upper edge of the hot-pressed semi-finished product into a whole by a sewing tool;
S400, turning the sewn outer shoe piece 120 upwards to the rear end of the hot-pressed semi-finished product, and enabling the outer shoe piece 120 to be attached to the rear surface of the hot-pressed semi-finished product so as to obtain an attached semi-finished product;
S500, providing a second forming die and a hot press for standby, and placing the second forming die on the hot press;
And S600, placing the attached semi-finished product on a second forming die, and carrying out hot pressing and heat preservation on the attached semi-finished product for a second time by a hot press to obtain the shoe heel counter rough blank.
In the step S100, the first forming mold may be designed according to the style, size and shape of the heel counter actually produced, and the pressure and temperature of the hot press may be properly adjusted according to the actual production requirement, and the sewing tool may be a sewing machine or a needle line sewn by hand, etc.
Referring to fig. 3 and 4, in step S200, the raw materials include a lower sponge sheet, a supporting elastic sheet 200, a welt reinforcing sheet, a shoe body reinforcing sheet, a buffer sheet, and an inner shoe sheet 110, and the first molding die is placed on a hot press, the raw materials are placed on the first molding die, and the hot press performs hot pressing on the raw materials and heat preservation for a first time to obtain a hot pressed semi-finished product, comprising the steps of:
S210, placing a first forming die on a hot press;
S220, placing the lower sponge sheet and the supporting elastic sheet 200 on the first forming die from bottom to top in sequence, specifically, arranging a thimble on the first forming die, placing the lower sponge sheet through the thimble, and arranging the thimble is favorable for avoiding the problem that the lower sponge sheet shifts in the hot pressing process. The supporting elastic sheet 200 is provided with the positioning hole, and the positioning hole penetrates through the ejector pin, so that the relative position of the supporting elastic sheet 200 and the first forming die can be fixed, and the occurrence of the problem that inferior products are generated due to different placing positions of the supporting elastic sheet 200 is avoided. The supporting elastic sheet 200 can be made of a material with better supporting performance and elasticity, such as sea green, TPU (thermoplastic polyurethane elastomer), TPR (thermoplastic rubber), TPE (thermoplastic elastomer), TPEE (thermoplastic polyester elastomer), and the like, the supporting elastic sheet 200 is arranged in the heel counter hot press molding process, the supporting elastic sheet 200 can be pressed down by a user through the elasticity of the supporting elastic sheet 200 so as to facilitate the foot to extend into the shoe opening of the shoe, and the heel counter can rebound automatically under the elasticity of the supporting elastic sheet 200, thereby achieving the function of assisting the user to complete the wearing of the shoe.
S230, placing the shoe opening reinforcing sheet on the lower sponge sheet, and placing the shoe opening reinforcing sheet at the shoe opening of the shoe heel, wherein the shoe opening fixing sheet can be a shaping yarn or other material parts with relatively high hardness, so that the hardness of the formed shoe heel at the shoe opening is high, and the problem of poor shoe wrapping caused by loosening of the shoe opening in the putting-on and taking-off process of a user is avoided.
And S240, covering the elastic supporting sheet and the shoe opening reinforcing sheet with the shoe body reinforcing sheet which can be shaped yarn or other material parts with relatively high hardness, wherein the arrangement of the shoe body reinforcing sheet is favorable for improving the stretch resistance of the molded shoe heel counter in consideration of the fact that the sponge structure is too loose, so that the durability of the shoe heel counter manufactured by adopting the shoe heel counter hot-press molding process is improved.
And the buffer sheet is arranged on the shoe body reinforcing sheet and is positioned at the middle upper part of the shoe heel, and the buffer sheet can be made of a material with good buffering performance such as a foam cushion, foam and the like. The buffer sheet is matched with the first forming die, so that the formed shoe heel can form a clamping strip at the position of the inner shoe sheet 110, after the foot of a human body penetrates into the shoe opening, the clamping strip can improve the fitting degree of the shoe heel and the foot of the human body, and the buffer sheet can absorb the impact force of the foot of the human body, so that the wearing comfort of a user is improved, the buffer sheet can hook the heel of the human body in the walking or movement process of the human body, and the problem that the shoe cannot catch the foot is solved.
S250, covering the inner shoe piece 110 on the buffer piece and the shoe body reinforcing piece, wherein the inner shoe piece 110 is a sheet material which is attached to the foot of a human body, and the inner shoe piece 110 can be made of a material with good skin-friendly property and air permeability, such as various natural leather, yarns, canvas and the like, in consideration of the comfort of wearing of the human body. Under the hot pressing action of the hot press, the lower sponge sheet, the supporting elastic sheet 200, the welt reinforcing sheet, the shoe body reinforcing sheet, the buffer sheet and the inner shoe sheet 110 are hot-pressed as one body and form a preset shape.
And S260, hot pressing the raw materials by a hot press and preserving heat for a first time to obtain a hot-pressed semi-finished product.
The temperature range of the hot press for carrying out the first hot pressing on the raw materials is 150 ℃ to 230 ℃, preferably, the upper die and the lower die of the hot press die assembly can be set to 184 ℃, the setting range of the first time is 120s to 300s, preferably, the die assembly heat preservation time of the hot press can be set to 200s, and the sponge is mature and keeps higher production efficiency through the setting of the hot pressing temperature and the heat preservation time, so that the technological requirements of the shoe heel counter hot press molding are met.
Compared with the traditional shoe counter made by sewing, the hot-press forming process for the shoe counter provided by the embodiment of the invention has the advantages that the hot-press forming process is simpler in processing flow, is beneficial to reducing the labor time and labor intensity of workers, is beneficial to improving the production efficiency of the shoe counter, and is beneficial to avoiding the problem that more stitching lines are generated at the connecting positions of sheets forming the shoe counter.
The boundary boss of the shoe heel counter to be molded can be arranged on the first molding die, and the boundary boss is matched with the pressure of the hot press, so that boundary indentation is formed on the hot-pressed semi-finished product, and a worker can conveniently cut the residual materials along the boundary indentation on the hot-pressed semi-finished product.
Before the step of S300, a cutting tool is provided for standby, for example, by using scissors and a cutting piece, a worker can cut the remainder at the upper edge of the hot-pressed semi-finished product by using the cutting tool, and the worker can cut the remainder along the boundary indentation on the hot-pressed semi-finished product, so that the upper edge of the hot-pressed semi-finished product meets the shape requirement of the finished product, and the outer shoe piece 120 is attached to the hot-pressed semi-finished product.
The step S400 includes the steps of:
providing an adhesive sheet and a heating device for standby, wherein a hot melt adhesive is adhered to the adhesive sheet;
Attaching the adhesive sheet to the rear surface of the hot-pressed semi-finished product, wherein one surface of the adhesive sheet is adhesive, one surface of the adhesive sheet with the adhesive is attached to the rear surface of the hot-pressed semi-finished product, and the hot melt adhesive is attached to the other surface of the adhesive sheet;
The heating device is used for heating the adhesive sheet to melt the hot melt adhesive, the heating device is a heating bellows which is used for blowing hot air to heat the adhesive sheet, or the heating device can be a heating lamp which can be used for heating the adhesive sheet through irradiation to melt the hot melt adhesive;
the sewn outer shoe sheet 120 is turned upward to the rear end of the hot-pressed semi-finished product and bonded with the adhesive sheet to obtain a bonded semi-finished product.
After the raw materials are hot pressed by a hot press to prepare a hot-pressed semi-finished product, the upper edge of the outer shoe sheet 120 is attached to the upper edge of the front end of the hot-pressed semi-finished product, the upper edge of the outer shoe sheet 120 and the upper edge of the hot-pressed semi-finished product are sewn into a whole by a sewing tool, and the sewn outer shoe sheet 120 is turned upwards to the rear end of the hot-pressed semi-finished product, so that the outer shoe sheet 120 is attached to the rear surface of the hot-pressed semi-finished product, namely, a sewing reverse wrapping process is adopted after hot pressing, so that the upper edge of the hot-pressed semi-finished product forms a wrapping 130 structure, the abrasion of a shoe heel made by the shoe heel hot-press forming process to a human body is reduced, the wearing comfort of the human body is improved, and the combination of the sewing reverse wrapping and the hot-pressing process is realized, so that the exterior of the shoe heel finished product is free of sewing threads, and the overall aesthetic property of the shoe heel manufactured by the heel hot-press forming process is guaranteed.
In the step S500, the second forming mold may be additionally provided with a pattern, the hot-pressed semi-finished product after the reverse wrapping of the stitching may be placed in the second forming mold, the hot press performs hot pressing and heat preservation for a second time on the bonded semi-finished product, that is, the second hot pressing is performed on the bonded semi-finished product after the reverse wrapping of the stitching, so that the outer shoe sole 120 and the hot-pressed semi-finished product are hot-pressed into a whole, the internal structure of the shoe heel counter blank may be more compact to a certain extent, the connection between the sheets is more tight, and the use requirement of the shoe heel counter hot-press forming process is satisfied. The second forming die is provided with the lines and the pressure of the hot press is controlled, so that external patterns and lines can be formed after the shoe heel is formed, and the overall aesthetic property of the formed shoe heel is improved. The outer shoe 120 may be made of wear-resistant, less-scratch-resistant materials, such as leather, canvas, etc.
The second forming die can be provided with the ejector pin, and the position of the ejector pin on the second forming die is consistent with that of the first forming die, so that the hole site on the hot-pressed semi-finished product is aligned with the ejector pin of the second forming die, and the positioning and the attaching of the hot-pressed semi-finished product and the second forming die can be realized.
In the step S600, the temperature range of the hot press for performing the second hot pressing on the hot pressed semi-finished product is 150 ℃ to 230 ℃, preferably, the upper die and the lower die of the die closing of the hot press can be set to 184 ℃, the setting range of the second temperature is 120S to 300S, preferably, the die closing heat preservation time of the hot press can be set to 200S, and the sponge is mature and keeps higher production efficiency through the setting of the hot pressing temperature and the heat preservation time, so that the technological requirement of the shoe heel counter hot press forming is met.
The hot press molding process of the shoe heel counter provided by the invention further comprises the following steps:
after the shoe back upper rough blank is manufactured, the lower edge and the side edge of the shoe back upper rough blank can be sheared through a cutting tool, specifically, a worker can shear the shoe back upper rough blank along the boundary indentation, so that a shoe heel finished product is formed, the shoe back upper rough blank is formed into a preset shape, and the shoe body is manufactured by matching with the vamp and the sole.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the examples, and various equivalent modifications and substitutions can be made by those skilled in the art without departing from the spirit of the present invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (7)
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| KR20240000337U (en) | 2021-10-15 | 2024-02-23 | 스케처스 유.에스.에이., 인코포레이티드 투 | Shoe counter for easy insertion and removal |
| CN116784569A (en) * | 2023-07-13 | 2023-09-22 | 广东恩浩内衣实业有限公司 | Preparation process of shoe back upper, shoe back upper and shoes |
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Effective date of registration: 20230526 Address after: California, USA Applicant after: Skechers U S A Inc. II Address before: 528000 Xiongxing Industrial Zone, Hecun, Lishui Town, Nanhai District, Foshan City, Guangdong Province Applicant before: GUANGDONG ENHAO UNDERWEAR INDUSTRY CO.,LTD. |
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