KR20170003859U - Injection Mold for Multi-Layered Shoe Uppers - Google Patents

Abstract

The present invention discloses a multi-layered upper injection molding die, and a conventional upper molding die can form only a double injection upper, and a new injection layer can be formed only on the outer layer, It was solved. The structure of the multi-layered upper injection molding die of the present invention includes a left moving mold, a right moving mold, and a newborn, and a discharge port is provided in the left moving mold or the right moving mold. This molding die is for injecting a single layer of shoe middle layer on the inner surface of the shoe outer layer constituting the upper part, and has a concave-convex structure on the outer end surface of the bony bone, and the breech hole is inserted at the position of the concave- ; And a limiting structure is formed on the inner end sides of the left and right movable mold cavities to form upper openings.

Description

{Injection Mold for Multi-Layered Shoe Uppers}

The present invention relates to a shoe-making mold, and more particularly to a mold for injection molding at least a double upper.

Conventional injection-molded shoes are generally a double structure consisting of an inner shoe layer and a shoe outer layer, and the shoe inner layer is generally used as a thermal insulation layer. This type of shoe is manufactured and molded by using a molding die. The structure of the conventional molding die includes a base sheet, a left moving die and a right moving die are hinged to one end side of a base sheet, A shoe lace is fixed at an intermediate position of the base sheet, and a foot-shaped leg portion of the human body is designed and molded at the upper end of the newborn. In the manufacturing process, the shoe inner layer is first put on the new bone, the left moving mold is combined with the right moving mold, the material is injected into the mold cavity using an injection machine, and a shoe upper having a double structure is formed after curing. The shoe sole is injection molded at the bottom of the shoe upper, or the shoe sole formed beforehand is fixed to the bottom of the shoe upper to form the finished shoe.

The Chinese invention patent (Announcement No. CN 103223710A) discloses a bottomless shoe forming mold, characterized in that it comprises a mold core which is installed in a cavity of an upper mold, a lower mold and a lower mold, A rear module, and a transition module positioned between the front module and the rear module, wherein a small insertion hole is formed in the mold cavity bottom wall of the lower mold, and both the front module, the rear module, Wherein the transition module includes at least three insert insertion blocks arranged in parallel to each other and fixed to the latches by a latch, wherein the transition module is provided with an insertion rod, each of which is inserted into a corresponding insertion hole of the mold cavity bottom wall, And a positioning insert insertion member inserted between the front window assembly and the rear module, And the positions of molding adhesives continuously surrounding the surface of the mold core are successively formed on the outer surfaces of the front module, the rear module, and the transition module.

The bottom-less shoe formed by this molding die also has a double structure, i.e., an inner layer and an outer layer, and the outer layer is injection molded. The external feel of the shoe is determined by the outer layer of the shoe. Conventional shoe molds can inject only the outer layer of the shoe, although a slight pattern on the surface of the shoe model cavity can be used to enhance the aesthetics of the shoe. On the one hand, the production cost of the mold is increased, and on the other hand, the design means is limited, and the beauty of the shoes to be obtained is limited. In addition, the aesthetic appearance of the outer layer of the shoe, the strong adhesive force, and the durability requirement must be simultaneously taken into consideration in the same material. However, since the same material characteristic has little possibility of combining these demands, I can not.

In order to overcome these deficiencies, the technical problem to be solved by the present invention is to provide a multi-layered upper injection molding die which is easy to inject a single layer structure on the inner surface of a shoe previously manufactured.

In order to solve the above technical problem, the technical solution of the present invention is as follows: In a multi-layered upper injection molding die including a left moving mold, a right moving mold and a newborn, and having a discharge port in a left moving mold or a right moving mold , The molding die is for injecting a single layer of shoe middle layer on the inner surface of the shoe outer layer constituting the upper part, and the concave and convex structure is provided on the outer end surface of the new bone, and the injection port is inserted into the concave- ; And a limiting structure is formed on the inner end sides of the left and right movable mold cavities to form upper openings.

The discharge port can be installed directly to the left moving mold or the right moving mold, and in this case, the left moving mold and the right moving mold after crimping wrap the crimping. The discharge port may be provided in the following movable molds. After the left and right movable molds are combined, an opening is formed in the upper end of the mold. After the movable mold is turned upside down and fastened to the opening, To form a folded structure. The confinement structure may be a stepped-type inlet provided in the left and right movable molds, or may be a strip-shaped pusher described below. After the firing, the stepped inlet or strip pressurizes all to form a closed annular structure, and after the injection of the shoe middle layer is completed, the inlet of the upper is located in the limited structure area. In other words, the installation of the limited structure is intended to form the entrance of the shoe upper, and in the injection process after the molding, the confining structure stops the material from further flowing, and the limited structure generally includes the shoe inner layer and the shoe outer layer Tightly adhered to the surface. Before the injection, the outer layer of the shoe should be covered with the outer layer of the shoe, and a through hole should be formed in the outer layer of the shoe. The position of the through hole corresponds to the position of the discharge hole, do. By the convexo-concave structure, after the material enters the inner side of the shoe inner layer, it is filled directly while flowing inside the shoe outer layer, and a folded upper is formed on the inner surface of the shoe outer layer after curing. The upper part of the upper is also the entrance part of the finished article shoe. When the shoe is worn, the foot is inserted into the shoe through the entrance part of the upper.

The outer layer of the shoes is made in advance and has an opening end and a closed end, and only the inner side of the outer layer of the shoe is injected, so that a through hole is formed in the outer layer of the shoe.

The upper injection molding die according to the present invention is not only capable of injection molding a double upper structure, but also typically for injection molding a triple upper structure.

And the outsole mold is hinged to the upper portion of the left moving mold. It is possible to injection-mold the upper sole after injection molding, thereby effectively increasing the working efficiency and ensuring the rigidity of the connection between the sole and the upper.

The movable mold is hinged to the upper portion of the right movable mold, and the discharge port is installed in the movable mold. The mounting position of the moving mold and the outsole mold can be reversed and the concavo-convex structure is installed directly on the outer end of the new bone so that the material can flow uniformly between the shoe inner layer and the shoe outer layer, And is installed directly on the movable mold so as to be easily inserted.

The convexo-concave structure is a strip-shaped protrusion, and the protrusion is disposed radially, and the position of the inner end of the protrusion corresponds to the position of the discharge port. Such strip-shaped protrusions are radially provided with a centrifugal point at any point on the outer surface of the new bone, and the inner ends of these protrusions are all concentrated on the centrifugal region, do. The strip-shaped protrusions are arranged radially so that the material can be easily dispersed and flowed between the outer layer of the shoe and the scrim.

The concavo-convex structure is a slight concave groove, and these concave grooves are cross-placed on the outer end face of the callus. After the injection port is inserted and injected from the through hole on the shoe outer layer to the concave groove position on the outer surface of the newborn, the material flows and flows between the outer layer of the shoes and the newborn in the traveling direction of the concave groove to complete the injection of the shoe middle layer.

A strip-shaped pushing protrusion protruding from the inner surface of the cavity of the left-side moving mold and the right-side moving mold is provided to form the limited structure, and the strip-shaped pushing part extends along the inner surface of the mold cavity. The pressurizing member is located on the inner end side of the mold cavity and forms an annular protrusion that is closed by the two pressurizing portions after the fitting so that the shoe inner layer and the shoe outer layer are tightly adhered to the surface of the shoe. The installation of the strip-type presser is to stop the flow of the material and make it easier to form the inlet of the upper.

A concave notch is provided in the mold cavity, and the notch is located outside the mold cavity. When the notch is provided, when the shoe outer layer and the shoe inner layer are relatively long, an extra length can be wound and housed in the notch, so that the fitting operation is convenient.

The advantageous effects of the present invention are as follows: The multi-layered upper injection molding die can produce a multi-structure upper when manufacturing the upper. The pre-fabricated shoe outer layer and the shoe inner layer can be firmly bonded, and the shoe outer layer can be manufactured in advance. The outer layer of the shoes can be designed in a relatively wide variety of designs, and the appearance of the injection-molded shoes can be diversified. In addition, the outer layer of the shoes can be injection-molded with sophisticated outer shoes by producing materials such as textiles, leather, PVC, PU, It is possible to effectively extend the consumption group of the injection-molded shoes by diversifying the kinds of the injection-molded shoes in the kind of the appearance. The material of the outer layer of the shoe can be selected from abrasion resistance and inner material, and the material of the outer layer of the shoe is not required to be adhered and can be manufactured by selecting a material having a relatively high abrasion resistance and can ensure the durability of the injection- have. The shoe outer layer and the shoe inner layer can be firmly joined together by selecting a material having excellent adhesiveness as the shoe middle layer material and since the inner shoe layer is located between the shoe outer layer and the shoe inner layer, And the shoe middle layer is not easily aged, so that shoes produced by the present molding method have high durability. The upper made by the present molding method has the above-mentioned multiple structure and the requirement for the material of each layer is relatively simple, so that the upper can be manufactured by selecting a more suitable material, and the final finished product shoe quality can be guaranteed . It is convenient to inject the material between the outer surface of the shoe and the surface of the shoe so that the injection work of the shoe middle layer can proceed smoothly.

FIG. 1 is a three-dimensional view of a state in which one embodiment of a forming die is opened in one direction.
Fig. 2 is a three-dimensional view of a state in which another embodiment of the forming die is opened in another direction.

In the drawings, such a multi-layered upper injection molding die is installed in a standing manner, and a slight operation on the molding die is mainly performed manually. The left movable mold 8 and the right movable mold 5 are hinged to one side surface of the base sheet 7 and the base sheet 7 is provided at the intermediate position of the base sheet 7, Is fixed. The mold cavities are symmetrically provided on the surfaces of the left moving mold 8 and the right moving mold 5 facing each other, and the mold cavity after the molding wraps the new bone 6. A fastening structure is provided at the free end portions of the left movable mold 8 and the right movable mold 5 and the left movable mold 8 and the right movable mold 5 are firmly fastened together by operating the fastening structure .

The molding die may be installed in a wedge manner and the molding die does not include the base material sheet 7 and the left moving mold 8 and the right moving mold 5 are fixed directly to the power mechanism on the automatic shoe making machine And the inner end of the new bone 6 can be fixed to the automatic shoe making machine. The mold closing and the mold opening operation can implement an automation operation, and the left movable mold 8 and the right movable mold 5 only move horizontally, and relative rotation does not occur.

The new bone 6 shown in the figure has an upper part and a leg part, the upper part is the foot shape of the human body, and the leg part is the leg part shape of the human body. Such a forming die is used for the manufacture of boots, and when the height of the leg portion is reduced, a half mirror or a shoe can be produced.

The protruding body 4 is in the shape of a strip and the protruding body 4 in the form of a strip is formed in such a manner that the center of the foot bottom portion of the upper surface of the new bone 6 And are arranged radially by centrifugation. A slight concave groove may be provided on the upper surface of the new bone 6, and these concave grooves are cross-placed on the upper surface of the new bone 6. [ At the time of injection, a flow path through which the material flows in the space between these protrusions 4, or the concave groove position, is formed so that the material flows while flowing between the shoe outer layer and the shoe inner layer to realize the injection of the middle of the shoe.

The movable mold 3 is hinged to the upper end of the right movable mold 5 and the injection port 2 is provided in the movable mold 3. The injection port 2 is in communication with the material transfer tube of the injection machine. After the left movable mold 8 and the right movable mold 5 are completely assembled, the movable mold 3 is turned upside down so that the movable mold 3 is moved to the left and right of the left movable mold 8 and the right movable mold 5, Thereby realizing the upper injection molding.

The upper part of the left moving mold 8 can be hinged to the outsole mold 1. The upper part of the left moving mold 8 can be hinged to the outsole mold 1. After the upper part is injection molded, And the shoe outsole mold 1 is turned upside down and fastened to the inlet part formed at the upper end of the left moving mold 8 and the right moving mold 5. [ Shoe outsole The material constituting the shoe sole is injected into the mold cavity of the shoe outsole mold (1) using the injection machine through the injection hole on the mold (1) to realize the shoe sole.

The most important feature of such a molding die is that a single layer structure can be injection-molded from the inside of the outer layer of the shoe so that the double structure of the upper layer can be adhered together at one time so that the shoe outer layer, It is possible to realize the manufacture of a triple structure upper which is an intermediate layer. Among them, the middle layer of shoes is newly injection molded. When it is desired to realize more layers of upper forming, it is possible to manufacture the upper by using different molds of different sizes.

Taking the triple upper structure as an example, the injection molding of a shoe using the present molding die includes the following steps. The step of covering the inner layer of the shoe (the inner layer of the shoe is provided with a closed end and an open end, and the shoe inner layer is covered from the opening of the shoe inner layer to the shoe 6); The step of covering the outer layer of the shoe (the outer layer of the shoe is provided with a closed end and an open end, the outer layer of the shoe is covered with the outer layer of the shoe from the opening of the outer layer of the shoe, and the outer layer of the shoe is located outside the shoe inner layer); A through-hole fabrication step (one through-hole is cut into the protruding body 4 of the outer layer of the shoe or the concave groove position); (2) is connected to the material transfer tube on the injection machine, and the injection port (2) is connected to the needle bar (6) by the closing movement of the left movable mold (8), the right movable mold ) Into the region where the protruding bodies 4 on the top face are installed); (The material feed tube of the injector injects the material between the shoe outer layer and the shoe inner layer from the through hole on the shoe outer layer through the discharge port 2); And a curing step (forming a shoe middle layer after the material is cured).

In the injection process of the middle layer of the shoe, since the material can not flow unlimitedly, a limited structure must be provided in the movable mold cavity to stop the flow of the material. Specifically, a strip-shaped pushing-out port 9 is integrally formed on the inner surface of the left-side movable mold 8 and the right-side movable mold 5 on the lower surface side of the cavity, and the strip-shaped pushing- After the left movable mold 8 and the right movable mold 5 are extended, the strip presser 9 on these upper surfaces forms one closed annular protrusion. In general, a relatively long shoe outer layer and shoe inner layer are selected, and the shoe outer layer and the shoe inner layer are covered on the new shoe (6). Then, the shoe outer layer and the shoe inner layer are extended to the lower side of the strip presser (9) The outer surface of the shoe outer layer and the shoe inner layer are tightly adhered to the outer surface of the new bone (6) with the projections. A stepped inlet may be formed on the surfaces of the two movable mold cavities so that both ends of the stepped inlet on the two movable molds are joined together after the molding.

A notch having the same position is provided on the outside of the mold cavity of the left moving mold 8 and the right moving mold 5 and the opening end of the shoe inner layer and the shoe outer layer of the extra length can be wound together, Is intended to receive the wound material.

1: Outsole mold 2: Outlet
3: movable mold 4: protruding member
5: Right moving mold 6:
7: substrate sheet 8: left moving mold
9: Strip type pusher

Claims (7)

A left moving mold, a right moving mold, and a newborn, wherein a discharge port is provided in a left moving mold or a right moving mold,
The molding die is for injecting a single layer of shoe middle layer on the inner surface of the shoe outer layer constituting the upper. The molding die is provided with a concave-convex structure on the outer end face of the new bone, and the yarn exit is inserted into the concave- And a limiting structure for forming an upper inlet portion is formed on the inner end side of the left and right movable mold cavity surface.
The method according to claim 1,
Wherein a shoe outsole mold is hingedly coupled to an upper portion of the left moving mold.
3. The method of claim 2,
Wherein the movable mold is hinged to the upper portion of the right movable mold and the discharge port is installed to the movable mold.
The method according to claim 1, 2, or 3,
Wherein the convexo-concave structure is a strip-shaped protrusion, the protrusion being disposed radially, and the position of the inner end of the protrusion corresponding to the position of the outlet.
The method according to claim 1, 2, or 3,
Wherein the concavo-convex structure is a slight concave groove, and the concave groove is cross-disposed on an outer end face of the newborn.
The method according to claim 1, 2, or 3,
Wherein a strip-shaped pushing-out protruding from a surface of the left-side moving mold and the right-side moving mold is provided on the inner surface of the mold cavity to form the limited structure, and a strip-shaped pushing-out port extends along the inner surface of the mold cavity. Molding mold.
The method according to claim 6,
Wherein a notch is provided in the mold cavity and the notch is located outside the mold cavity.

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