CN117754806B

CN117754806B - Combined forming process, footwear fittings and shoes

Info

Publication number: CN117754806B
Application number: CN202311650443.0A
Authority: CN
Inventors: 陈智林; 韦鑫
Original assignee: Guangdong Enhao Underwear Industry Co ltd
Current assignee: Guangdong Enhao Underwear Industry Co ltd
Priority date: 2023-12-04
Filing date: 2023-12-04
Publication date: 2024-10-01
Anticipated expiration: 2043-12-04
Also published as: CN117754806A

Abstract

The invention discloses a combined forming process, a shoe fitting and shoes, which belong to the technical field of shoe fitting production processes, wherein the combined forming process comprises the following steps: providing a forming die, a first foaming material, an upper shoe piece and a sole piece, wherein the forming die comprises a first upper die and a first lower die, the first upper die is provided with a first upper shoe forming surface and a first sole forming surface, and the first lower die is provided with a second upper shoe forming surface and a second sole forming surface; attaching the upper shoe piece to the first upper molding surface and the first sole molding surface; shaping the upper surrounding sheet to enable the upper surrounding sheet to be attached with a reinforcing layer; attaching the upper surrounding piece to the second upper forming surface, and attaching the sole surrounding piece to the second sole forming surface; adding a first foaming material into a first lower die, and closing the first upper die and the first lower die; after the first preset time of pressurize, first last mould and first lower mould separation to obtain the assembly of upper of a shoe and sole, upper of a shoe and sole integrated into one piece give consideration to sole elasticity and upper of a shoe supportability.

Description

Combined forming process, footwear fittings and shoes

Technical Field

The invention relates to the technical field of shoe accessory production processes, in particular to a combined forming process, a shoe accessory and a shoe.

Background

The shoe heel is an important component of shoes, mainly plays a role in wrapping and supporting the heels of human bodies, and plays an important role in improving the wearing experience of users and protecting feet. In the traditional process, the heel counter is mostly manufactured by adopting a sewing forming process, so that sewing lines are generated at the joint of the sheets, the human body is easily scratched, and the manufacturing process is complex.

In the existing shoemaking process, the sole and the upper are respectively and independently molded, and then are connected into a whole through the connection modes of bonding, sewing and the like, so that the complexity of the shoemaking process is easily caused, the connection stability of the sole and the upper is poor, and the problems of glue opening, loose sewing threads and the like are easily caused at the connection part of the sole and the upper after the shoe is worn for a long time.

In the related art, part of rubber shoes are prepared by adopting a foaming molding process, so that the sole, the shoe front upper and the shoe rear upper are molded at one time and connected into a whole, but the process can only be applied to rubber shoes, the production requirements of shoes such as sport shoes, leather shoes and the like are difficult to meet, and the process is difficult to consider the elasticity of the sole and the supportability of the upper.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a combined forming process which is beneficial to realizing the integral forming of the upper and the sole and gives consideration to the elasticity of the sole and the supportability of the upper.

The invention also provides a shoe accessory.

The invention also provides a shoe.

According to an embodiment of the first aspect of the present invention, a composite molding process includes: providing a forming die, a first foaming material, an upper shoe piece and a sole piece, wherein the forming die comprises a first upper die and a first lower die, a first upper forming surface and a first sole forming surface which are connected are arranged on a parting surface of the first upper die, and a second upper forming surface and a second sole forming surface which are connected are arranged on a parting surface of the first lower die;

Attaching the upper shoe piece to the first upper molding surface and the first sole molding surface;

Shaping the upper surrounding sheet to enable the upper surrounding sheet to be attached with a reinforcing layer;

Attaching the upper surrounding piece to the second upper forming surface, attaching the sole surrounding piece to the second sole forming surface, and connecting the rear edge of the sole surrounding piece with the lower edge of the upper surrounding piece;

Adding a first foaming material into a first lower die, and closing the first upper die and the first lower die to enclose a die cavity, wherein the first foaming material is foamed in the die cavity;

After the first preset time of pressure maintaining, the first upper die is separated from the first lower die to obtain a combination of the upper and the sole.

The combined forming process provided by the embodiment of the invention has at least the following beneficial effects: during production, a worker can perform shaping treatment on the upper surrounding piece so that the upper surrounding piece is attached with a reinforcing layer to strengthen the hardness of the upper surrounding piece, the upper surrounding piece is placed corresponding to the second upper shaping surface, the upper surrounding piece is arranged corresponding to the upper, the wrapping and supporting performances of heels of a human body are enhanced, the sole surrounding piece is placed corresponding to the second sole shaping surface, the rear edge of the sole surrounding piece is connected with the lower edge of the upper surrounding piece, the upper shoe piece is attached to the first upper shaping surface and the first sole shaping surface, then a first foaming material can be added to the first lower die, after the first upper die is in butt joint and die assembly with the first lower die, the first upper shaping surface is arranged opposite to the second upper shaping surface for shaping the upper, the first sole shaping surface is arranged opposite to the second sole shaping surface for shaping the sole, the first upper die and the first lower die jointly enclose a die cavity, the first foaming material is formed in the mold cavity in a foaming way, under the expansion action of the first foaming material, the shape and the structure of the upper shoe piece forming and the first upper shoe molding surface and the first sole molding surface are favorable for the shape and the structure of the upper shoe surrounding piece forming and the second upper shoe molding surface, the shape and the structure of the sole surrounding piece forming and the second sole molding surface are favorable for simplifying the shoe making process and improving the production efficiency, the whole mold cavity is filled with the first foaming material, the adhesive layer formed by the first foaming material is clamped between the upper shoe piece and the upper shoe surrounding piece and the sole surrounding piece, the formed upper shoe and the sole are connected into a whole, namely, the upper shoe and the sole are integrally formed into a part, the connection stability of the upper shoe and the sole is favorable for being improved, compared with the way of independently manufacturing and reconnecting the upper shoe and the sole, the hardness of the upper shoe is higher than the hardness of the sole under the reinforcing effect of the reinforcing layer, so as to realize the support performance of the upper to the heel of the human body, maintain the elasticity of the sole and have stronger applicability to various shoes.

According to some embodiments of the invention, a shaping process for an upper panel comprises:

providing a second upper die, a second lower die and a second foaming material, wherein the parting surface of the second upper die is provided with a third upper molding surface, and the parting surface of the second lower die is provided with a fourth upper molding surface;

Attaching the upper surrounding piece to the fourth upper molding surface;

adding a second foaming material above the upper surrounding piece, and closing the second upper die and the second lower die to form a cavity, wherein the second foaming material is foamed in the cavity;

And after maintaining the pressure for a second preset time, separating the second upper die from the second lower die.

Specifically, the second upper die is provided with a third upper molding surface, the second lower die is provided with a fourth upper molding surface, the fourth upper molding surface is matched with the third upper molding surface, the upper surrounding piece is attached to the fourth upper molding surface, the second foaming material is added above the upper surrounding piece, the second upper die and the second lower die are clamped, so that the second foaming material is foamed and connected with the upper surrounding piece into a whole, under the limiting effect of a cavity, the second foaming material is foamed and forms a reinforcing layer attached to the surface of the upper surrounding piece, under the connecting effect of the reinforcing layer, the upper surrounding piece is provided with a sunken three-dimensional shape, the adaptation degree of the upper surrounding piece and the second upper molding surface is improved, the comprehensive attachment and adaptation of the upper surrounding piece and the second upper molding surface are facilitated, under the expansion effect of the first foaming material, the upper surrounding piece is formed into a shape and structure matched with the molding surface of the second upper, and under the connection effect of the first foaming material, the upper surrounding piece and the sole surrounding piece are connected into a whole, the integration of the upper and the sole is improved, the reinforcing layer formed by the second foaming material is beneficial to enhancing the protection performance and the supporting performance of the upper to the heel of a human body, the adhesive layer formed by the first foaming material is beneficial to the inner layer of the upper and the sole, so that the wearing comfort of a user is improved, and the combined molding process is used for foaming the upper surrounding piece, so that the upper surrounding piece and the sole surrounding piece form hardness difference, and are connected into a whole under the connection effect of the first foaming material, thereby the elasticity of the sole and the supporting performance of the upper are both considered.

According to some embodiments of the invention, the second upper die or the second lower die comprises a housing and a die core, the housing is provided with a concave accommodating groove, the die core is detachably connected with the housing, the die core is matched with the accommodating groove, and the die core can be embedded and connected with the accommodating groove.

Considering that traditional mould is monoblock mould steel material finished piece to accomplish through metal working machine refinement, traditional mould's refinement process time is longer, can lead to high die sinking expense, and the mould that ordinary metal working machine obtained is difficult to satisfy the shaping demand of some structures and the comparatively complicated shoes heel counter of shape, second goes up mould or second lower mould and includes casing and mold core, the mold core can be with the accommodation groove detachable connection of casing, when mold core and casing equipment, the mold core inlays to be established and is connected in the accommodation groove, this second lower mould can be used to foaming shaping technology, the workman can cover the upper of a shoe girth piece in the mold core top, the inflation of cooperation second foaming material, upper of a shoe girth piece is laminated with fourth upper of a shoe profile, thereby make upper of a shoe girth piece form and structure and fourth upper of a shoe profile looks adaptation, the precision is higher, when need change shoes heel counter shape and structure, can redesign the mold core, and open the mold core, and with new design can be used for the casing alone, the mould core is cut into shape alone or the cost is reduced to the mould core, the cost is reduced to the production cost is favorable to the second is reduced to the mould core after the shaping demand of the shaping, the production cost is reduced to the mould core is alone or is done to the mould core, the realization is reduced.

According to some embodiments of the invention, the second lower die is further provided with a first air suction channel, the fourth upper molding surface is provided with a plurality of first air suction holes, one end of the first air suction channel is communicated with the first air suction holes, and the other end of the first air suction channel is provided with a first air suction hole.

The first extraction opening can be connected with an external extraction pump through the hose, so that the first suction hole generates negative pressure, the upper surrounding piece is clung to the fourth upper forming surface and matched with the expansion of the second foaming material, the upper surrounding piece is formed into a shape and a structure matched with the fourth upper forming surface, the surface shape and the structure of the upper surrounding piece after being formed are more matched with the fourth upper forming surface in a negative pressure suction mode, the accuracy is higher, and the problem that the surface of the upper surrounding piece is wrinkled is avoided.

According to some embodiments of the invention, the second lower die further comprises a first annular frame, the second lower die is provided with a first annular groove arranged around the fourth upper molding surface, and the first annular frame is matched with the first annular groove;

laminating the upper surrounding piece on the fourth upper molding surface, comprising:

the upper surrounding piece is covered on the first annular groove, and the first annular frame is embedded with the first annular groove.

In order to avoid the problem that the upper surrounding piece is shrunk under the negative pressure, the second lower die further comprises a first annular frame, the second lower die is provided with a first annular groove, the first annular groove is arranged around the containing groove, when the shoe upper surrounding piece is used, a worker can cover the upper surrounding piece on the fourth upper forming surface and the first annular groove and tightly press the edge of the upper surrounding piece on the first annular groove through the first annular frame, so that the problem that the periphery of the upper surrounding piece is shrunk towards the middle under the negative pressure effect of the first air suction hole is avoided, the smooth transition of the outer surface of the upper surrounding piece forming is guaranteed, the forming quality of the shoe heel is improved, the adaptation degree of the upper surrounding piece and the fourth upper forming surface is higher, and the forming surface is more accurate.

According to some embodiments of the invention, the second upper molding surface and the second sole molding surface are each provided with a plurality of second air suction holes;

laminating the upper surrounding piece corresponding to the second upper molding surface, laminating the sole surrounding piece corresponding to the second sole molding surface, comprising:

Placing the upper surrounding piece corresponding to the second upper molding surface, and vacuumizing the second air suction hole so that the upper surrounding piece is adsorbed on the second upper molding surface;

and placing the sole surrounding piece corresponding to the second sole molding surface so that the sole surrounding piece is adsorbed on the second sole molding surface.

Specifically, in order to keep the laminating of sole surrounding piece and second sole shaping face and the laminating of upper of a shoe surrounding piece and second upper of a shoe shaping face, first lower mould all is equipped with a plurality of second suction holes in second upper of a shoe shaping face and second sole shaping face department, place the upper of a shoe surrounding piece and correspond second upper of a shoe shaping face, place the sole surrounding piece and correspond second sole shaping face after, the workman accessible peripheral pump body carries out the evacuation to the second suction hole to make second suction hole department form negative pressure, utilize the negative pressure can make the upper of a shoe surrounding piece adsorb in second upper of a shoe shaping face, the sole surrounding piece adsorbs in second upper of a shoe shaping face, be favorable to avoiding under the inflation effect of first foaming material, and make the problem that sole surrounding piece or upper of a shoe surrounding piece squint, shrink appear, this combination shaping technology is through negative pressure adsorption cooperation foaming inflation, so that the sole surrounding piece forms the shape with second sole shaping face looks adaptation, and be favorable to improving the surface accuracy of lower surface and upper of a shoe shaping face.

According to some embodiments of the invention, the rear edge of the sole surrounding piece and the lower edge of the upper surrounding piece are overlapped and adhered into a whole.

The back edge of the sole encloses the piece and the lower edge overlap arrangement of the upper of a shoe encloses the piece, under the foaming inflation effect of first foaming material, is favorable to making the sole enclose the piece and upper of a shoe enclose the piece and connect as an organic wholely, is favorable to improving the sole and encloses the connection stability of piece and upper of a shoe and enclose the piece, and the sole encloses the piece and bond as an organic wholely with the sole, is favorable to avoiding the sole to enclose the piece and enclose the piece with the upper of a shoe and connect the problem emergence of leaking vacuum or leaking glue.

According to some embodiments of the invention, the first upper molding surface and the first sole molding surface are each provided with a plurality of third air suction holes;

Attaching the upper shoe piece to the first upper molding surface and the first sole molding surface, comprising:

abutting the upper shoe piece against the first upper molding surface and the first sole molding surface;

and vacuumizing the third air suction hole, and adsorbing the upper shoe piece on the first upper molding surface and the first sole molding surface.

Specifically, in order to keep the fit of the shoe upper piece with the first upper molding surface and the first sole molding surface, the first upper mold is provided with a plurality of third air suction holes at the first upper molding surface and the first sole molding surface, the shoe upper piece is covered on the first upper molding surface and the first sole molding surface and is abutted with the first upper molding surface and the first sole molding surface, a worker can vacuumize the third air suction holes through a pump body arranged outside to enable the third air suction holes to form negative pressure, the shoe upper piece can be adsorbed at the first upper molding surface and the first sole molding surface by utilizing the negative pressure, the problem that the shoe upper piece is deviated or wrinkled under the expansion action of the first foaming material is avoided, and the combined molding process is matched with the foaming expansion through the negative pressure adsorption, so that the shoe upper piece forms a shape matched with the first sole molding surface and the first upper molding surface, and the surface precision of the shoe upper piece is improved.

According to some embodiments of the invention, abutting an upper shoe piece against a first upper molding surface and a first sole molding surface comprises:

Providing a clamping frame, wherein the clamping frame is provided with an opening;

Connecting the upper shoe piece to the clamping frame and covering the opening;

the clamping frame is close to the first upper die, the first upper molding surface and the first sole molding surface penetrate through the opening to be abutted with the upper shoe piece, and the upper shoe piece is kept tensioned.

Considering that the first upper molding surface and the first sole molding surface have concave-convex shapes, when the upper shoe piece is attached to the first upper molding surface and the first sole molding surface, the upper shoe piece is easy to generate folds at the concave-convex shapes, so that the inner surface of the molded upper or sole is not smooth, the combined molding process also comprises a clamping frame, the upper shoe piece is connected at the clamping frame, and the upper shoe piece is arranged to cover the opening, then press the clamping frame relative to the first upper die for after first upper molding surface and first sole molding surface pass the opening with last shoe piece butt, the setting of clamping frame is favorable to making last shoe piece keep tensioning state when laminating, utilizes the deformation of last shoe piece, in order to make last shoe piece form with the shape and the structure of first upper molding surface and first sole molding surface looks adaptation.

providing a fitting piece, wherein the fitting piece is provided with a fitting surface matched with the molding surface of the first upper;

and covering the upper shoe piece on the first upper molding surface, wherein the bonding surface of the bonding piece is embedded with the first upper molding surface.

Considering that the width of the concavity and convexity of the first upper molding surface is larger than that of the first sole molding surface, the upper shoe piece is difficult to realize comprehensive lamination with the first upper molding surface, wrinkles are easily generated on the upper shoe piece in the region with overlarge concavity and convexity, the combined molding process further comprises a lamination piece, the lamination piece is provided with a lamination surface matched with the first upper molding surface, and when in production, a worker can cover the upper shoe piece on the first upper molding surface and the first sole molding surface and press the lamination surface of the lamination piece towards the first upper molding surface so that the lamination surface is embedded with the first upper molding surface, and the upper shoe piece is arranged between the lamination piece and the first upper mold.

An embodiment of a footwear accessory according to the second aspect of the invention comprises a combination moulding process as described in any of the first aspects.

The footwear accessory according to the embodiment of the invention has at least the following beneficial effects: during production, a worker can perform shaping treatment on the upper surrounding piece so that the upper surrounding piece is attached with a reinforcing layer to strengthen the hardness of the upper surrounding piece, the upper surrounding piece is placed corresponding to the second upper shaping surface, the upper surrounding piece is arranged corresponding to the upper, the wrapping and supporting performances of heels of a human body are enhanced, the sole surrounding piece is placed corresponding to the second sole shaping surface, the rear edge of the sole surrounding piece is connected with the lower edge of the upper surrounding piece, the upper shoe piece is attached to the first upper shaping surface and the first sole shaping surface, then a first foaming material can be added to the first lower die, after the first upper die is in butt joint and die assembly with the first lower die, the first upper shaping surface is arranged opposite to the second upper shaping surface for shaping the upper, the first sole shaping surface is arranged opposite to the second sole shaping surface for shaping the sole, the first upper die and the first lower die jointly enclose a die cavity, the first foaming material is formed in the mold cavity in a foaming way, under the expansion action of the first foaming material, the shape and the structure of the upper shoe piece forming and the first upper shoe molding surface and the first sole molding surface are favorable for the shape and the structure of the upper shoe surrounding piece forming and the second upper shoe molding surface, the shape and the structure of the sole surrounding piece forming and the second sole molding surface are favorable for simplifying the shoe making process and improving the production efficiency, the whole mold cavity is filled with the first foaming material, the adhesive layer formed by the first foaming material is clamped between the upper shoe piece and the upper shoe surrounding piece and the sole surrounding piece, the formed upper shoe and the sole are connected into a whole, namely, the upper shoe and the sole are integrally formed into a part, the connection stability of the upper shoe and the sole is favorable for being improved, compared with the way of independently manufacturing and reconnecting the upper shoe and the sole, the hardness of the upper shoe is higher than the hardness of the sole under the reinforcing effect of the reinforcing layer, so as to realize the support performance of the upper to the heel of the human body, maintain the elasticity of the sole and have stronger applicability to various shoes.

An embodiment of a shoe according to a third aspect of the invention includes a footwear accessory as shown in the second aspect.

The shoe provided by the embodiment of the invention has at least the following beneficial effects: during production, a worker can perform shaping treatment on the upper surrounding piece so that the upper surrounding piece is attached with a reinforcing layer to strengthen the hardness of the upper surrounding piece, the upper surrounding piece is placed corresponding to the second upper shaping surface, the upper surrounding piece is arranged corresponding to the upper, the wrapping and supporting performances of heels of a human body are enhanced, the sole surrounding piece is placed corresponding to the second sole shaping surface, the rear edge of the sole surrounding piece is connected with the lower edge of the upper surrounding piece, the upper shoe piece is attached to the first upper shaping surface and the first sole shaping surface, then a first foaming material can be added to the first lower die, after the first upper die is in butt joint and die assembly with the first lower die, the first upper shaping surface is arranged opposite to the second upper shaping surface for shaping the upper, the first sole shaping surface is arranged opposite to the second sole shaping surface for shaping the sole, the first upper die and the first lower die jointly enclose a die cavity, the first foaming material is formed in the mold cavity in a foaming way, under the expansion action of the first foaming material, the shape and the structure of the upper shoe piece forming and the first upper shoe molding surface and the first sole molding surface are favorable for the shape and the structure of the upper shoe surrounding piece forming and the second upper shoe molding surface, the shape and the structure of the sole surrounding piece forming and the second sole molding surface are favorable for simplifying the shoe making process and improving the production efficiency, the whole mold cavity is filled with the first foaming material, the adhesive layer formed by the first foaming material is clamped between the upper shoe piece and the upper shoe surrounding piece and the sole surrounding piece, the formed upper shoe and the sole are connected into a whole, namely, the upper shoe and the sole are integrally formed into a part, the connection stability of the upper shoe and the sole is favorable for being improved, compared with the way of independently manufacturing and reconnecting the upper shoe and the sole, the hardness of the upper shoe is higher than the hardness of the sole under the reinforcing effect of the reinforcing layer, so as to realize the support performance of the upper to the heel of the human body, maintain the elasticity of the sole and have stronger applicability to various shoes.

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 invention is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic perspective view of a combination molding process according to an embodiment of the present invention;

FIG. 2 is a schematic view showing another perspective structure of a combination of the combination molding process according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of an upper enclosure sheet of a composite molding process according to an embodiment of the present invention;

FIG. 4 is a schematic diagram showing a structure of a first upper mold and a first lower mold of a combined molding process according to an embodiment of the present invention;

FIG. 5 is a schematic view of a first lower die of a combined molding process according to an embodiment of the invention;

FIG. 6 is a schematic view showing a structure of a first lower mold separated from a third annular frame in a combined molding process according to an embodiment of the present invention;

FIG. 7 is a schematic view of a combined forming process of an embodiment of the present invention, wherein an upper panel and a sole panel are placed on a first lower mold;

FIG. 8 is a schematic view of a first upper mold of a combined molding process according to an embodiment of the present invention;

FIG. 9 is a schematic diagram of a second lower die of a combined molding process according to an embodiment of the invention;

FIG. 10 is a schematic view of a second lower die of a combined molding process according to another embodiment of the present invention;

FIG. 11 is a flow chart of a combined forming process according to an embodiment of the invention;

FIG. 12 is a flow chart of a combined forming process according to an embodiment of the invention;

FIG. 13 is a flow chart of a combined forming process according to an embodiment of the invention;

FIG. 14 is a flow chart of a combined forming process according to an embodiment of the invention;

FIG. 15 is a flow chart of a combined forming process according to an embodiment of the invention;

FIG. 16 is a flow chart of a combined forming process according to an embodiment of the invention;

FIG. 17 is a flow chart of a combined forming process according to an embodiment of the invention.

Reference numerals:

100. A first upper die; 110. a first sole molding surface; 120. a first upper molding surface; 121. a concave portion; 130. a bump; 140. a third bleed passage; 150. an upper bonding surface; 160. a third annular groove; 170. an upper limit part;

200. A first lower die; 210. a second sole molding surface; 220. a second upper molding surface; 221. a texture portion; 230. a groove; 240. a second bleed passage; 250. a lower bonding surface; 260. a second annular groove; 270. a lower limit part;

300. A third annular frame;

400. a second annular frame;

500. a combination body; 510. a sole surrounding piece; 520. an upper surrounding piece;

600. a second lower die; 610. a housing; 620. a mold core; 621. a fourth upper molding surface; 630. a first annular groove; 640. a first bleed passage.

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 the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, plural means two or more. 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 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.

Referring to fig. 1 to 17, a combined molding process according to an embodiment of the present invention includes the steps of:

Step S100, providing a forming die, a first foaming material, an upper shoe piece, an upper surrounding piece 520 and a sole surrounding piece 510, wherein the forming die comprises a first upper die 100 and a first lower die 200, the parting surface of the first upper die 100 is provided with a first upper forming surface 120 and a first sole forming surface 110 which are connected, and the parting surface of the first lower die 200 is provided with a second upper forming surface 220 and a second sole forming surface 210 which are connected;

Step S200, attaching the upper shoe piece to the first upper molding surface 120 and the first sole molding surface 110;

step S300, shaping the upper surrounding piece 520 so that the upper surrounding piece 520 is attached with a reinforcing layer;

step S400, attaching the upper surrounding piece 520 to the second upper molding surface 220, attaching the sole surrounding piece 510 to the second sole molding surface 210, and connecting the rear edge of the sole surrounding piece 510 with the lower edge of the upper surrounding piece 520;

step S500, adding a first foaming material to the first lower die 200, and closing the first upper die 100 and the first lower die 200 to enclose a die cavity, wherein the first foaming material is foamed in the die cavity;

in step S600, after the first preset time, the first upper mold 100 is separated from the first lower mold 200 to obtain the upper and sole assembly 500.

Referring to fig. 4,5, 6 and 8, in step S100, the molding die includes a first upper die 100 and a first lower die 200, the first upper die 100 is a male die, the adapted first lower die 200 is a female die, the lower surface of the first upper die 100 is a parting surface, and the upper surface of the first lower die 200 is a parting surface.

Referring to fig. 8, the lower surface of the first upper mold 100 includes a first upper molding surface 120 and a first sole molding surface 110, the first upper molding surface 120 is disposed at the rear of the first sole molding surface 110, the first upper molding surface 120 and the first sole molding surface 110 are disposed at an included angle, and a joint of the first upper molding surface 120 and the first sole molding surface 110 together encloses a bump 130 adapted to the heel of a human body. Specifically, the first upper molding surface 120 is arranged in an arch shape for wrapping and supporting the heel of the human body, and the first sole molding surface 110 is arranged in a plane for fitting with the sole of the human body.

Referring to fig. 5 and 6, the upper surface of the adapted first lower mold 200 includes a second upper molding surface 220 and a second sole molding surface 210, the second upper molding surface 220 is located at the rear of the second sole molding surface 210, the second upper molding surface 220 and the second sole molding surface 210 are arranged at an included angle, the junction of the second upper molding surface 220 and the second sole molding surface 210 together encloses a groove 230 adapted to the heel of a human body, and the shape of the groove 230 is adapted to the shape of the protruding block 130. Specifically, the second upper molding surface 220 is arranged in an arch shape to wrap and support the heel of the human body, and the second sole molding surface 210 is arranged in a plane to attach to the sole of the human body.

Referring to fig. 1, 2 and 3, the upper shoe sheet, the upper surrounding sheet 520 and the sole surrounding sheet 510 may be flexible material members, and under the foaming expansion effect of the first foaming material, the upper shoe sheet may be formed into a shape matching the first upper molding surface 120 and the first sole molding surface 110 by matching with the limitation of the mold cavity, the upper surrounding sheet 520 may be formed into a shape matching the second upper molding surface 220, and the sole surrounding sheet 510 may be formed into a shape matching the second sole molding surface 210.

Referring to fig. 11 and 12, it can be understood that in step S300, the upper shell 520 is formed, including the steps of:

Step S310, providing a second upper die, a second lower die 600 and a second foaming material, wherein the parting surface of the second upper die is provided with a third upper molding surface, and the parting surface of the second lower die 600 is provided with a fourth upper molding surface 621;

step S320, attaching the upper surrounding piece 520 to the fourth upper molding surface 621;

Step S330, adding a second foaming material above the upper surrounding piece 520, and closing the second upper die and the second lower die 600 to form a cavity, wherein the second foaming material is foamed in the cavity;

in step S340, after maintaining the pressure for the second preset time, the second upper mold is separated from the second lower mold 600.

Referring to fig. 9 and 10, the second upper mold is provided with a third upper molding surface, the second lower mold 600 is provided with a fourth upper molding surface 621, the fourth upper molding surface 621 is matched with the third upper molding surface, the upper surrounding piece 520 is attached to the fourth upper molding surface 621, the second foaming material is added above the upper surrounding piece 520, the second upper mold is matched with the second lower mold 600 to enable the second foaming material to foam and be connected with the upper surrounding piece 520 into a whole, under the limiting effect of the cavity, the second foaming material is enabled to foam and form a reinforcing layer attached to the surface of the upper surrounding piece 520, under the connecting effect of the reinforcing layer, the upper surrounding piece 520 is enabled to have a concave three-dimensional shape, the overall attaching and adapting degree of the upper surrounding piece 520 and the second upper molding surface 220 are improved, under the expansion effect of the first foaming material, the upper surrounding piece 520 is enabled to form a shape and structure matched with the second upper surrounding piece 220, the connecting performance of the first foaming material and the upper surrounding piece is enabled to be beneficial to the sole 510, and the performance of the upper surrounding piece is improved.

According to the combined forming process provided by the embodiment of the invention, the upper surrounding piece 520 and the sole surrounding piece 510 are prepared separately, and the upper surrounding piece 520 is formed, so that the hardness of the upper surrounding piece 520 is higher than that of the sole surrounding piece 510, and the rubber layer formed by the first foaming material is softer than the inner layer of the upper and the sole, so that the wearing comfort of a user is improved.

The second upper mold and the second lower mold 600 are used for forming the upper surrounding sheet 520, and the hardness of the reinforcing layer formed by the second foaming material is greater than that of the adhesive layer formed by the first foaming material, so that the upper surrounding sheet 520 and the sole surrounding sheet 510 form a hardness difference, and the elasticity of the sole and the supportability of the upper are both considered.

It should be noted that the first preset time may be adjusted according to factors such as the actual type of the first foaming material, the addition amount of the first foaming material, the materials of the upper shoe sheet, the upper surrounding sheet 520 and the sole surrounding sheet 510, for example, 30S, 40S, 50S, 60S, etc., which are only examples herein, and the numerical value of the first preset time is not limited in practice. The second preset time may be adjusted according to factors such as the type of the actual second foaming material, the addition amount of the second foaming material, the material of the upper surrounding sheet 520, and the like, for example, 30S, 40S, 50S, 60S, and the like, which are only examples herein, and the value of the second preset time is not limited in practice.

Referring to fig. 9 and 10, it may be understood that the second lower mold 600 includes a housing 610 and a mold core 620, the housing 610 is provided with a receiving groove concavely disposed, the mold core 620 is detachably connected to the housing 610, the mold core 620 is adapted to the receiving groove, and the mold core 620 can be embedded in and connected to the receiving groove.

Considering that the conventional mold is a monolithic mold steel material part and is manufactured and completed by a metal processing machine, the conventional mold has long fine processing time, which results in high mold opening cost, and the mold obtained by the conventional metal processing machine is difficult to meet the molding requirements of some shoe uppers with complex structures and shapes, the second lower mold 600 comprises a housing 610 and a mold core 620, the housing 610 is provided with a concave accommodating groove, and the mold core 620 can be detachably connected with the accommodating groove of the housing 610. The fourth upper molding surface 621 is provided on the upper surface of the mold core 620.

The mold core 620 is adapted to the accommodating groove, and the mold core 620 can be embedded and connected to the accommodating groove. The shape and size of the mold core 620 are matched with those of the accommodating groove, and the mold core 620 and the accommodating groove are in clearance fit or interference fit, so that the mold core 620 and the shell 610 are detachably connected, and the clearance between the outer peripheral surface of the mold core 620 and the inner peripheral surface of the accommodating groove is reduced as much as possible.

When the mold core 620 is assembled with the shell 610, the mold core 620 is embedded and connected in the accommodating groove, the second lower mold 600 can be used for foaming and forming, a worker can cover the upper surrounding piece 520 above the mold core 620, the upper surrounding piece 520 is attached to the fourth upper forming surface 621 and matched with the expansion of the second foaming material, so that the upper surrounding piece 520 forms a shape and structure matched with the fourth upper forming surface 621, the surface shape and structure of the upper surrounding piece 520 after forming are more matched with the fourth upper forming surface 621, the precision is higher, when the shape and structure of the shoe heel are required to be changed, the mold core 620 can be redesigned and opened, the newly designed mold core 620 can be assembled with the shell 610, the production of the new shoe heel can be facilitated, the processing time and the mold opening cost of the second lower mold 600 can be reduced, and the mold core 620 is independently designed and manufactured, the interference of the shell 610 on mechanical processing can be reduced, so that the structure and shape of the mold core 620 can be manufactured more flexibly, and the requirements of forming of various structures and shapes of the shoe heel can be met.

Referring to fig. 9 and 10, it may be understood that the second lower mold 600 is further provided with a first air suction channel 640, the fourth upper molding surface 621 is provided with a plurality of first air suction holes, one end of the first air suction channel 640 is communicated with the first air suction holes, and the other end of the first air suction channel 640 is provided with a first air suction hole.

The first extraction opening can be connected with an external extraction pump through a hose, so that the first suction hole generates negative pressure, the upper surrounding piece 520 is tightly attached to the fourth upper forming surface 621 and matched with the expansion of the second foaming material, the upper surrounding piece 520 is formed into a shape and structure matched with the fourth upper forming surface 621, the surface shape and structure of the upper surrounding piece 520 after being formed are more matched with the forming surface in a negative pressure suction mode, the accuracy is higher, and the problem that the surface of the upper surrounding piece 520 is wrinkled is avoided.

As another embodiment, the forming process of the upper surrounding sheet 520 can be realized through a hot press forming process, a worker can add reinforcing materials above the upper surrounding sheet 520, under the hot press action of a hot press device, the reinforcing materials are attached above the upper surrounding sheet 520, and a reinforcing layer is formed, so that the hardness of the upper surrounding sheet 520 is greater than that of the sole surrounding sheet 510, and the adhesive layer formed by the first foaming material is softer, so that the inner layers of the upper and the sole are softer, and the wearing comfort of a user is improved.

Referring to fig. 13, it will be appreciated that in this embodiment, the second lower mold 600 further includes a first annular frame, and the second lower mold 600 is provided with a first annular groove 630 disposed around the fourth upper molding surface 621, the first annular frame being adapted to the first annular groove 630;

In step S320, attaching the upper shell 520 to the fourth upper molding surface 621 includes:

In step S321, the upper surrounding sheet 520 is covered on the first annular groove 630, and the first annular frame is fitted into the first annular groove 630.

In order to avoid the shrinkage problem of the upper surrounding sheet 520 under the negative pressure, the second lower die 600 further comprises a first annular frame, the second lower die 600 is provided with a first annular groove 630, the first annular groove 630 is arranged around the fourth upper forming surface 621, when the shoe upper surrounding sheet 520 is used, a worker can cover the fourth upper forming surface 621 and the first annular groove 630, and tightly press the edge of the upper surrounding sheet 520 on the first annular groove 630 through the first annular frame, so that the shrinkage problem from the periphery to the middle of the upper surrounding sheet 520 under the negative pressure action of the first air suction hole is avoided, the smooth transition of the formed outer surface of the upper surrounding sheet 520 is ensured, the forming quality of the shoe upper is improved, the adaptation degree of the upper surrounding sheet 520 and the fourth upper forming surface is higher, and the formed surface is more accurate.

Referring to fig. 8, it can be understood that in step S200, the first upper molding surface 120 and the first sole molding surface 110 are each provided with a plurality of third suction holes, and the first upper mold 100 is provided with a third suction channel 140, and the third suction holes located at the first upper molding surface 120 and the first sole molding surface 110 communicate with the third suction channel 140.

The first upper molding surface 120 and the first sole molding surface 110 are densely provided with a plurality of third air suction holes, the third air suction holes are communicated with one end of the third air suction channel 140, the other end of the third air suction channel 140 is a third air suction hole, a worker can communicate a pump body which is arranged outside with the third air suction hole through a hose, and negative pressure is generated at the third air suction hole under the action of pressure transformation of the pump body.

Referring to fig. 15, it can be understood that, in step S200, attaching the upper shoe sheet to the first upper molding surface 120 and the first sole molding surface 110 includes the steps of:

Step S210, abutting the upper shoe piece against the first upper molding surface 120 and the first sole molding surface 110;

In step S220, the third suction hole is vacuumized, and the upper shoe piece is sucked on the first upper molding surface 120 and the first sole molding surface 110.

Specifically, in order to keep the upper shoe piece attached to the first upper molding surface 120 and the first sole molding surface 110, the first upper mold 100 is provided with a plurality of third air suction holes at the first upper molding surface 120 and the first sole molding surface 110, the upper shoe piece is covered on the first upper molding surface 120 and the first sole molding surface 110 and is abutted to the first upper molding surface 120 and the first sole molding surface 110, after the worker can vacuumize the third air suction holes through the pump body arranged outside, so that negative pressure is formed at the third air suction holes, the upper shoe piece can be adsorbed at the first upper molding surface 120 and the first sole molding surface 110 by utilizing the negative pressure, the problem that the upper shoe piece is deviated or shrinkage occurs under the expansion action of the first foaming material is avoided, and the combined molding process expands through the negative pressure adsorption and matching, so that the upper shoe piece forms a shape matched with the first sole molding surface 110 and the first upper shoe molding surface 120, and the surface precision of the upper shoe piece is improved.

Referring to fig. 16, it can be understood that in step S210, the upper shoe piece is abutted against the first upper molding surface 120 and the first sole molding surface 110, and the steps of:

step S211, providing a clamping frame, wherein the clamping frame is provided with an opening;

Step S212, connecting the upper shoe piece to the clamping frame and covering the opening;

in step S213, the clamping frame approaches the first upper mold 100, and the first upper molding surface 120 and the first sole molding surface 110 are abutted to the upper shoe through the openings, and the upper shoe is kept tensioned.

In step S211, the clamping frame includes a first frame body and a second frame body, the first frame body is rotationally connected with the second frame body, openings are formed in the first frame body and the second frame body, the first frame body and the second frame body can be unfolded or overlapped relatively, and when the first frame body and the second frame body are overlapped, the openings of the first frame body and the openings of the second frame body are overlapped.

In step S212, during production, the worker can unfold the first frame and the second frame, place the upper shoe on one of the first frame and the second frame, then clamp the upper shoe between the first frame and the second frame by rotating the other of the first frame and the second frame, and the clamping of the first frame and the second frame is beneficial to covering the upper shoe at the opening, and the upper shoe is in a tensioning state, so that the problem that the upper shoe cannot be fully attached to the first upper molding surface 120 or the first sole molding surface 110 when the upper shoe is abutted to the first upper molding surface 120 or the first sole molding surface 110 is avoided.

In step S213, after the upper shoe sheet is sandwiched between the first frame and the second frame, the worker may align the opening of the clamping frame with the first upper molding surface 120 and the first sole molding surface 110, and apply pressure to the clamping frame toward the first upper mold 100, so that the clamping frame approaches the first upper mold 100, and the first upper molding surface 120 and the first sole molding surface 110 abut against the upper shoe sheet after passing through the opening.

Considering that the first upper molding surface 120 and the first sole molding surface 110 have a concave-convex shape, when the upper shoe sheet is attached to the first upper molding surface 120 and the first sole molding surface 110, the upper shoe sheet is easily wrinkled at the concave-convex shape, thereby causing the surface of the upper or the sole after molding to be not smooth, the combined molding process further comprises a clamping frame, the upper shoe sheet is connected at the clamping frame, and the upper shoe sheet is arranged to cover the opening, then press the clamping frame relative to the first upper mold 100 for the first upper molding surface 120 and the first sole molding surface 110 pass through the opening and then abut against the upper shoe piece, the arrangement of the clamping frame is favorable for keeping the upper shoe piece in a tensioning state during fitting, and the deformation of the upper shoe piece is utilized to enable the upper shoe piece to form a shape and a structure matched with the first upper molding surface 120 and the first sole molding surface 110.

As another embodiment, the clamping frame is provided with a plurality of positioning nails, the positioning nails are arranged around the opening, and when the shoe-fixing device is used, a worker can pass the shoe-fixing nails through the positioning nails, so that the shoe-fixing device is connected to the clamping frame and covers the opening of the clamping frame, and the relative position relation between the shoe-fixing device and the clamping frame is facilitated to be fixed through the positioning nails. Then the workman can be with the locating pin towards first last mould 100 to make the opening of centre gripping frame and first upper of a shoe die face 120 and first sole die face 110 align, and exert the pressure that is close to first last mould 100 to the centre gripping frame, so that the centre gripping frame is close to first last mould 100, and first upper of a shoe die face 120 and first sole die face 110 pass the opening after with last shoe piece butt, under the spacing effect of locating pin, last shoe piece keeps tensioning state, is favorable to realizing going up the comprehensive laminating of shoe piece and first upper of a shoe die face 120 or first sole die face 110.

It will be appreciated that in this embodiment, the forming mold further comprises a third annular frame 300, the first upper mold 100 being provided with a third annular groove 160 surrounding the first upper forming surface 120 and the first sole forming surface 110, the third annular frame 300 being adapted to the third annular groove 160;

In step S210, the upper shoe piece is abutted against the first upper molding surface 120 and the first sole molding surface 110, and further includes the steps of: the upper shoe is covered on the third annular groove 160, and the third annular frame 300 is fitted with the third annular groove 160.

Referring to fig. 8, in order to enable the upper sheet to be closely attached to the first sole molding surface 110 and the first upper molding surface 120, the problem of wrinkling of the upper sheet at the first upper molding surface 120 and the first sole molding surface 110 due to the vacuum suction through the first air suction passage 640 is avoided. The molding die further includes a third annular frame 300, and the first upper die 100 is provided with a third annular groove 160 at the outer side of the first upper molding surface 120 and the first sole molding surface 110.

When the upper shoe piece covers the first sole molding surface 110 and the first upper molding surface 120, a worker can embed the third annular frame 300 into the third annular groove 160, and the outer edge of the upper shoe piece is clamped between the third annular frame 300 and the third annular groove 160, which is favorable for tensioning the upper shoe piece and attaching to the first upper molding surface 120 and the first sole molding surface 110, and cooperates with the expansion action of the first foaming material to form the surface shapes of the first upper molding surface 120 and the first sole molding surface 110, and can effectively reduce the wrinkles generated after the upper shoe piece is molded, so as to ensure that the surfaces of the upper shoe piece and the sole attached to a human body are in smooth transition, and the embedding of the third annular frame 300 and the third annular groove 160 is favorable for fixing the upper shoe piece at the first upper die 100, so that the attaching state of the upper shoe piece and the first upper shoe molding surface 120 and the first sole molding surface 110 is favorable for fixing without the worker to attach to the first upper shoe piece 100 by pressing at any time.

Referring to fig. 17, it can be understood that in step S210, the upper shoe piece is abutted against the first upper molding surface 120 and the first sole molding surface 110, and the steps of:

step S214, providing a fitting piece, wherein the fitting piece is provided with a fitting surface matched with the first upper molding surface 120;

in step S215, the upper shoe piece is covered on the first upper molding surface 120, and the bonding surface of the bonding piece is embedded with the first upper molding surface 120.

Compared with the first sole molding surface 110, the first upper molding surface 120 has larger concave-convex amplitude, the shoe-coating piece is difficult to realize comprehensive lamination with the first upper molding surface 120, and wrinkles are easily generated on the shoe-coating piece in the area with overlarge concave-convex shape change.

Referring to fig. 1 and 8, in the process of manufacturing, a worker may cover the upper shoe sheet on the first upper molding surface 120 and the first sole molding surface 110 and press the bonding surface of the bonding member toward the first upper molding surface 120 so that the bonding surface is embedded with the first upper molding surface 120, and the upper shoe sheet is placed between the bonding member and the first upper mold 100, so that the upper shoe sheet is bonded with the first upper mold 100 and wrinkles generated in the upper shoe sheet at the first upper molding surface 120 are reduced by the mutual extrusion of the bonding member and the first upper mold 100.

It is understood that the forming mold further comprises a third lower mold, the third lower mold is provided with a fifth upper forming surface and a third sole forming surface which are connected, and the attaching piece can be the third lower mold. The fifth upper molding surface is adapted to the first upper molding surface 120, and the third sole molding surface is adapted to the first sole molding surface 110.

When in use, a worker can connect the upper shoe piece at the clamping frame first and approach the clamping frame to the first upper die 100, so that the first upper molding surface 120 and the first sole molding surface 110 are abutted with the upper shoe piece through the opening, and then the third annular frame 300 can press the upper shoe piece into the third annular groove 160 after passing through the opening, so as to keep the fitting state of the upper shoe piece and the first upper die 100. And then the third lower die passes through the opening and then is in butt joint with the first upper die 100, under the mutual extrusion action of the third lower die and the first upper die 100, the upper shoe piece is favorably attached to the first upper die 100, wrinkles generated by the upper shoe piece at the first upper molding surface 120 or the first sole molding surface 110 are reduced, the upper shoe piece is favorably attached to the first upper molding surface 120 or the first sole molding surface 110 comprehensively, then a gap between the upper shoe piece and the first upper molding surface 120 or the first sole molding surface 110 can be eliminated in a vacuumizing mode, and the upper shoe piece is adsorbed at the first upper die 100 so as to keep the attachment of the upper shoe piece and the first upper molding surface 120 and the first sole molding surface 110 comprehensively.

It will be appreciated that the second upper molding surface 220 and the second sole molding surface 210 are each provided with a plurality of second air suction holes; the first lower die holder 200 is provided with a second air suction channel 240, a plurality of second air suction holes are all communicated with one end of the second air suction channel 240, the other end of the second air suction channel 240 is provided with a second air suction opening, and the second air suction opening can be connected with a pump body arranged outside so as to realize the vacuumizing treatment of the second air suction holes.

Referring to fig. 14, in step S400, attaching the upper covering sheet 520 to the second upper molding surface 220 and attaching the sole covering sheet 510 to the second sole molding surface 210 includes:

s410, placing the upper surrounding piece 520 corresponding to the second upper molding surface 220, and vacuumizing the second air suction hole so that the upper surrounding piece 520 is adsorbed on the second upper molding surface 220;

s420, placing the sole surrounding piece 510 corresponding to the second sole molding surface 210, so that the sole surrounding piece 510 is adsorbed on the second sole molding surface 210.

Referring to fig. 5, 6 and 7, specifically, in order to keep the fit between the sole surrounding piece 510 and the second sole forming surface 210 and the fit between the upper surrounding piece 520 and the second sole forming surface 220, the first lower die 200 is provided with a plurality of second air suction holes at the positions of the second upper forming surface 220 and the second sole forming surface 210, the upper surrounding piece 520 is placed corresponding to the second upper forming surface 220, after the sole surrounding piece 510 is placed corresponding to the second sole forming surface 210, a worker can vacuumize the second air suction holes through a pump body arranged outside, so that negative pressure is formed at the second air suction holes, the upper surrounding piece 520 is adsorbed to the second upper forming surface 220 and the sole surrounding piece 510 is adsorbed to the second sole forming surface 210 by utilizing the negative pressure, so that the problem that the sole surrounding piece 510 or the upper surrounding piece 520 is offset and contracted under the expansion action of the first foaming material is avoided.

Referring to fig. 7, it can be understood that the rear edge of the sole surrounding sheet 510 and the lower edge of the upper surrounding sheet 520 are overlapped, which is beneficial to connecting the sole surrounding sheet 510 and the upper surrounding sheet 520 together under the foaming expansion action of the first foaming material, is beneficial to improving the connection stability of the sole surrounding sheet 510 and the upper surrounding sheet 520, and the upper surrounding sheet 510 and the sole surrounding sheet 520 are bonded together, so that the problem of vacuum leakage or glue leakage at the joint of the sole surrounding sheet 510 and the upper surrounding sheet 520 is avoided. After the upper surrounding piece 520 is formed, a worker can trim the lower edge of the upper surrounding piece 520 through a cutting tool, so that the surplus edges are removed, glue is coated on the lower edge of the upper surrounding piece 520, the rear edge of the sole surrounding piece 510 is bonded with the lower edge of the upper surrounding piece 520, and the connection between the sole surrounding piece 510 and the upper surrounding piece 520 is realized.

As another embodiment, the sole surrounding sheet 510 and the upper surrounding sheet 520 are the same sheet material, the upper surrounding sheet 520 is matched with the foaming molding of the second foaming material under the extrusion action of the second upper die and the second lower die 600 to form a reinforcing layer, so that the sole surrounding sheet 510 and the upper surrounding sheet 520 form a demarcation line, and then the sole surrounding sheet 510 and the second sole molding surface 210 can be matched, and the upper surrounding sheet 520 and the second upper molding surface 220 can be matched through cutting.

Referring to fig. 5 and 6, it can be appreciated that in the present embodiment, the molding die further includes a second annular frame 400, the first lower die 200 is provided with a second annular groove 260 surrounding the second upper molding surface 220 and the second sole molding surface 210, and the second annular frame 400 is fitted with the second annular groove 260;

In step S400, the upper surrounding sheet 520 is attached to the second upper molding surface 220, and the method further includes the steps of: the upper surrounding sheet 520 is covered on the second annular groove 260, and the second annular frame 400 is fitted with the second annular groove 260.

In order to keep the upper surrounding piece 520 attached to the second upper forming surface 220, the forming mold further comprises a second annular frame 400, the first lower mold 200 is provided with a second annular groove 260 which is adapted to surround the second upper forming surface 220 and the second sole forming surface 210, during production, a worker can cover the upper surrounding piece 520 on the second annular groove 260 and the second upper forming surface 220 and jogge the second annular frame 400 with the second annular groove 260, so that the outer edge of the upper surrounding piece 520 is clamped between the second annular groove 260 and the second annular frame 400, the attaching state of the upper surrounding piece 520 and the second upper forming surface 220 is favorably fixed, the worker does not need to press the upper surrounding piece 520 to the first lower mold 200 at any time, and the jogging of the second annular frame 400 and the second annular groove 260 is favorable for improving the tightness between the upper surrounding piece 520 and the second upper forming surface 220 and avoiding the problem of vacuum leakage between the upper surrounding piece 520 and the second upper forming surface 220 or the second sole forming surface 210.

Specifically, after the worker places the upper surrounding piece 520 corresponding to the second upper forming surface 220, the upper edge of the upper surrounding piece 520 may be turned over outwards, so that the upper surrounding piece 520 is partially covered in the second annular groove 260, then the second annular frame 400 is embedded with the second annular groove 260, so as to preliminarily fix the relative position relationship of the upper surrounding piece 520 in the first lower mold 200, then the second suction hole is vacuumized, so that the upper surrounding piece 520 is attached to the second upper forming surface 220, and after the relative relationship between the upper surrounding piece 520 and the second upper forming surface 220 is adjusted, the sole surrounding piece 510 may be placed corresponding to the second sole forming surface 210, and so that the rear edge of the sole surrounding piece 510 overlaps and attaches to the lower edge of the upper surrounding piece 520, thereby realizing that the upper surrounding piece 520 and the sole surrounding piece 510 together form the upper surrounding piece 520.

It can be appreciated that, when the first foam material is foamed and formed in the mold cavity and then separated from the first upper mold 100 and the first lower mold 200, the worker can blow out the air from the second air suction hole and the third air suction hole through the pump body arranged outside, that is, the second air suction hole and the third air suction hole, so as to assist in separating the upper shoe piece from the first upper molding surface 120 and the first sole molding surface 110, separating the upper shoe piece 520 from the second upper molding surface 220, and separating the sole piece 510 from the second sole molding surface 210, which is beneficial to avoiding the problem that the assembly 500 is damaged by pulling the assembly 500 to be demolded, and improving the demolding efficiency of the assembly 500. The combined forming process is in a vacuumizing mode, so that the upper shoe piece is adsorbed on the first upper forming surface 120 and the first sole forming surface 110, the upper surrounding piece 520 is adsorbed on the second upper forming surface 220, the sole surrounding piece 510 is adsorbed on the second sole forming surface 210, the surface forming precision of the combined body 500 is improved, and the formed combined body 500 is separated from the first upper die 100 and the first lower die 200 in an air blowing mode, and the integrity of the combined body 500 is maintained.

When the second foaming material is foamed in the cavity, the second upper die is separated from the second lower die 600, and a worker can blow out air from the first air suction hole through the pump body arranged outside, namely, the air is blown out from the first air suction hole, so that the upper surrounding sheet 520 and the fourth upper forming surface 621 are separated in an auxiliary mode, the problem that the upper surrounding sheet 520 is damaged due to the fact that the upper surrounding sheet 520 attached with the reinforcing layer is pulled to be demoulded is avoided, and the demoulding efficiency of the upper surrounding sheet 520 is improved. The combined forming process is advantageous to separate the upper surrounding sheet 520 attached with the reinforcing layer from the second lower mold 600 and maintain the integrity of the upper surrounding sheet 520 by means of air blowing, so that the upper surrounding sheet 520 is adsorbed on the fourth upper forming surface 621 by means of vacuumizing, thereby improving the surface forming precision of the upper surrounding sheet 520.

Referring to fig. 5, 6 and 8, it can be appreciated that the first upper molding surface 120 has a concave portion 121 recessed forward such that the molded upper has a convex block protruding forward, and the second upper molding surface 220 has a convex portion protruding forward, the convex portion being adapted to the concave portion 121. After the first upper die 100 and the first lower die 200 are clamped, the convex portion and the concave portion 121 together enclose a cavity protruding forward, and after the first foaming material is formed in the cavity in an expansion mode, the cavity is filled with the first foaming material to form a protruding block protruding forward.

The protruding block is arranged corresponding to the ankle pipe of the human ankle recess, so that the protection and the wrapping of the human heel are realized, the impact generated by the human motion is absorbed, and the wearing comfort of a user is improved.

Referring to fig. 5 and 6, it can be understood that the second upper molding surface 220 corresponds to the outer surface of the upper, that is, is used as the appearance surface of the shoe at the upper, the second upper molding surface 220 is provided with the concave-convex texture portion 221, and the upper surrounding sheet 520 is matched with the expansion effect of the first foaming material through the fitting of the upper surrounding sheet 520 and the second upper molding surface 220, so that the upper surrounding sheet 520 forms the surface shape matched with the texture portion 221, the forming accuracy of the upper surrounding sheet 520 is improved, compared with the hot press forming process, the limitation of the heating temperature on the fabric is reduced, and the problem that the fabric is damaged due to high temperature is avoided.

The specific texture of the texture portion 221 may be made according to the design of the actual shoe, and the specific texture of the texture portion 221 is not limited herein.

It will be appreciated that in step S500, specifically, the first foaming material may be a polyurethane mixture, and during the foaming process of the foaming material, the foaming material may automatically generate heat and expand, so that the first foaming material is integrally connected with the upper shoe sheet, the upper surrounding sheet 520 and the sole surrounding sheet 510, the upper shoe sheet forms a shape matching the first upper molding surface 120 and the first sole molding surface 110, the upper surrounding sheet 520 forms a shape matching the second upper molding surface 220, and the sole surrounding sheet 510 forms a shape matching the second sole molding surface 210, thereby improving the surface accuracy of the upper and the sole molding.

For the molded upper and sole combination 500, the upper blade is a material that contacts the sole and heel of the human body, and may be a skin-friendly material such as various cloths, etc. The lower surface of the sole surrounding piece 510 is used for connecting with the midsole, and the rear surface of the upper surrounding piece 520 is the rear surface and the appearance surface of the shoe heel counter.

It will be appreciated that in step S500, the first lower mold 200 is provided with a lower abutment surface 250 disposed about the second upper molding surface 220 and the second sole molding surface 210, and the first upper mold 100 is provided with an upper abutment surface 150 disposed about the first upper molding surface 120 and the first sole molding surface 110, the upper abutment surface 150 being capable of abutting the lower abutment surface 250 to close the mold cavity.

Specifically, the lower veneering is gradually upwards inclined from inside to outside, the upper veneering is gradually upwards inclined from inside to outside, after the first upper die 100 and the first lower die 200 are assembled, the upper veneering 150 is tightly attached to the lower veneering 250 so as to seal the outer edge of the die cavity, under the expansion action of the first foaming material, the first foaming material forms a shape matched with the die cavity, the problem that the first foaming material overflows the die cavity is avoided, the formed upper and sole assembly 500 has preset hardness, and the alignment of the first upper die 100 and the first lower die 200 is facilitated through the arrangement of the inclination angles of the upper veneering and the lower veneering, so that the butt joint of the first upper die 100 and the first lower die 200 is realized.

Referring to fig. 3, 5, 6 and 8, it can be appreciated that, in order to achieve stable butt joint of the first upper mold 100 and the first lower mold 200, the first lower mold 200 is further provided with a lower limit portion 270, and the first upper mold 100 is further provided with an upper limit portion 170, so that when the first upper mold 100 approaches the first lower mold 200, the butt joint of the upper limit portion 170 and the lower limit portion 270 is beneficial to limiting the movement of the first upper mold 100 in the transverse direction relative to the first lower mold 200, and beneficial to enabling the first upper mold 100 and the first lower mold 200 to be butt-jointed according to a preset position, so as to ensure that the shape of the mold cavity is a preset shape.

Specifically, the lower limiting portion 270 includes four connection posts, the four connection posts are disposed around the second annular groove 260, the upper ends of the four connection posts are provided with downward concave slots, the upper limiting portion 170 includes four plugging posts, the four plugging posts are disposed around the first annular groove 630, the plugging posts are disposed in one-to-one correspondence with the connection posts, and the lower ends of the plugging posts can be plugged into the slots.

After the four plugging upright posts are connected with the four connecting upright posts and the upper bonding surface 150 is tightly attached to the lower bonding surface 250, the first upper die 100 and the first lower die 200 can be abutted.

The shoe fitting according to one embodiment of the present invention is manufactured by using the combination molding process as shown in the above embodiment.

In production, a worker can mold the upper surrounding sheet 520 so that the upper surrounding sheet 520 is attached with a reinforcing layer to strengthen the hardness of the upper surrounding sheet 520, and place the upper surrounding sheet 520 corresponding to the second upper molding surface 220, the upper surrounding sheet 520 is arranged corresponding to the upper, which is beneficial to enhancing the wrapping and supporting performance of the heel of a human body, the sole surrounding sheet 510 is placed corresponding to the second sole molding surface 210, the rear edge of the sole surrounding sheet 510 is connected with the lower edge of the upper surrounding sheet 520, the upper shoe sheet is attached to the first upper molding surface 120 and the first sole molding surface 110, then a first foaming material can be added to the first lower mold 200, when the first upper mold 100 is in butt joint and die assembly with the first lower mold 200, the first upper molding surface 120 is arranged opposite to the second upper molding surface 220 for molding the upper, the first sole molding surface 110 is arranged opposite to the second sole molding surface 210 for forming the sole, the first upper mold 100 and the first lower mold 200 together enclose a mold cavity, the first foaming material is formed by foaming in the mold cavity, under the expansion action of the first foaming material, the shape and the structure of the upper shoe piece forming and the matching of the first upper forming surface 120 and the first sole forming surface 110 are facilitated, the shape and the structure of the upper shoe piece 520 forming and the matching of the second upper forming surface 220 are facilitated, the shape and the structure of the sole enclosing piece 510 forming and the matching of the second sole forming surface 210 are facilitated, the first foaming material fills the whole mold cavity, the adhesive layer formed by the first foaming material is clamped between the upper shoe piece, the upper shoe piece 520 and the sole enclosing piece 510, the formed upper and the sole are connected into a whole, namely, the upper shoe and the sole are integrally formed, the connection stability of the upper shoe and the sole is facilitated to be improved, compared with the way of independently manufacturing and reconnecting the upper and the sole, the shoe manufacturing process is facilitated, the production efficiency is improved, and under the reinforcement effect of the reinforcement layer, the hardness of the upper is larger than that of the sole, so that the support performance of the upper to the heel of a human body is realized, the elasticity of the sole is kept, and the applicability to various shoes is stronger.

The shoe according to one embodiment of the present invention includes the footwear accessory shown in the above embodiment.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims

1. The combined forming process is characterized by comprising the following steps of:

Providing a forming die, a first foaming material, an upper shoe piece surrounding piece (520) and a sole surrounding piece (510), wherein the forming die comprises a first upper die (100) and a first lower die (200), a first upper forming surface (120) and a first sole forming surface (110) which are connected are arranged on the parting surface of the first upper die (100), and a second upper forming surface (220) and a second sole forming surface (210) which are connected are arranged on the parting surface of the first lower die (200);

Attaching the upper sheet to the first upper molding surface (120) and the first sole molding surface (110);

shaping the upper shell (520) to attach a reinforcing layer to the upper shell (520);

Attaching the upper surrounding piece (520) to the second upper forming surface (220), attaching the sole surrounding piece (510) to the second sole forming surface (210), and connecting the rear edge of the sole surrounding piece (510) with the lower edge of the upper surrounding piece (520);

Adding the first foaming material to the first lower die (200), and closing the first upper die (100) and the first lower die (200) to enclose a die cavity, wherein the first foaming material foams in the die cavity;

after the first preset time is maintained, the first upper die (100) is separated from the first lower die (200) to obtain a combination body (500) of the upper and the sole.

2. The combination molding process as claimed in claim 1, wherein: the shaping process for the upper panel (520) comprises:

Providing a second upper die, a second lower die (600) and a second foaming material, wherein a third upper molding surface is arranged on the parting surface of the second upper die, and a fourth upper molding surface (621) is arranged on the parting surface of the second lower die (600);

Attaching the upper shell (520) to the fourth upper molding surface (621);

Adding the second foaming material above the upper surrounding piece (520), and closing the second upper die and the second lower die (600) to surround a forming cavity, wherein the second foaming material foams in the cavity;

after maintaining the pressure for a second preset time, the second upper die is separated from the second lower die (600).

3. The combination molding process as claimed in claim 2, wherein: the second upper die or the second lower die (600) comprises a shell (610) and a die core (620), wherein the shell (610) is provided with a containing groove which is concavely arranged, the die core (620) is detachably connected with the shell (610), the die core (620) is matched with the containing groove, and the die core (620) can be embedded and connected with the containing groove.

4. The combination molding process as claimed in claim 2, wherein: the second lower die (600) is further provided with a first air suction channel (640), the fourth upper molding surface (621) is provided with a plurality of first air suction holes, one end of the first air suction channel (640) is communicated with the first air suction holes, and the other end of the first air suction channel (640) is provided with a first air suction hole.

5. The composite molding process according to claim 4, wherein: the second lower die (600) further comprises a first annular frame, the second lower die (600) is provided with a first annular groove (630) arranged around the fourth upper forming surface (621), and the first annular frame is matched with the first annular groove (630);

The attaching of the upper enclosure sheet (520) to the fourth upper molding surface (621) includes:

the upper surrounding piece (520) is covered on the first annular groove (630), and the first annular frame is embedded with the first annular groove (630).

6. The combination molding process as claimed in claim 1, wherein: the second upper molding surface (220) and the second sole molding surface (210) are provided with a plurality of second air suction holes;

The attaching the upper surrounding piece (520) to the second upper molding surface (220), attaching the sole surrounding piece (510) to the second sole molding surface (210), includes:

placing the upper surrounding piece (520) corresponding to the second upper forming surface (220), and vacuumizing the second air suction hole so that the upper surrounding piece (520) is adsorbed to the second upper forming surface (220);

The sole surrounding piece (510) is placed corresponding to the second sole molding surface (210) so that the sole surrounding piece (510) is adsorbed to the second sole molding surface (210).

7. The combination molding process as claimed in claim 1, wherein: the rear edge of the sole surrounding piece (510) is overlapped with the lower edge of the upper surrounding piece (520) and is adhered into a whole.

8. The combination molding process as claimed in claim 1, wherein: the first upper molding surface (120) and the first sole molding surface (110) are provided with a plurality of third air suction holes;

The attaching the upper sheet to the first upper molding surface (120) and the first sole molding surface (110) includes:

Abutting the upper sheet against the first upper molding surface (120) and the first sole molding surface (110);

and vacuumizing the third air suction hole, wherein the upper shoe piece is adsorbed on the first upper molding surface (120) and the first sole molding surface (110).

9. The combination molding process as claimed in claim 8, wherein: the abutting of the upper sheet against the first upper molding surface (120) and the first sole molding surface (110) includes:

connecting the upper shoe piece to the clamping frame and covering the opening;

The clamping frame is close to the first upper die (100), the first upper molding surface (120) and the first sole molding surface (110) penetrate through the opening to be abutted with the upper shoe piece, and the upper shoe piece is kept tensioned.

10. The combination molding process as claimed in claim 8, wherein: the abutting of the upper sheet against the first upper molding surface (120) and the first sole molding surface (110) includes:

providing a conformable member having a conformable surface adapted to the first upper forming surface (120);

And covering the upper shoe piece on the first upper molding surface (120), wherein the bonding surface of the bonding piece is embedded with the first upper molding surface (120).

11. Footwear fitting, characterized in that it is produced by applying a combination moulding process according to any of claims 1 to 10.

12. A shoe comprising the footwear accessory of claim 11.