ETPU sole foaming forming mold

Abstract

The utility model discloses an ETPU sole foam forming mold which comprises an upper mold and a lower mold, the lower mold can be close to or far away from the lower mold, a cavity used for containing a shoe outsole is formed in the lower mold, a middle frame is arranged between the upper mold and the lower mold, and a cavity used for foam forming is formed between the upper mold and the lower mold. A positioning structure used for positioning one face of a reinforcing plate is arranged in the lower die, a first pressing structure used for pressing the other face of the reinforcing plate is arranged in the upper die, the positioning structure is movably arranged in the lower die, and a second pressing structure used for pressing a shoe outsole is further arranged on the upper die. The reinforcing plate can be placed on the positioning structure, and the shoe outsole is placed at the bottom of the cavity, so that the shoe insole and the reinforcing plate are integrally foamed and formed in the process of forming the shoe insole, and meanwhile, the shoe outsole and the shoe insole can be adhered together to obtain the integrated sole with the shoe insole, the shoe outsole and the built-in reinforcing plate. And the use characteristics of the sole are better met, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sole moulds, in particular to an ETPU sole foaming mould. Background Art

[0002] During the manufacturing process of the soles, in order to enhance the toughness and strength of the soles, a carbon plate is usually added to the soles of some shoes such as basketball shoes or running shoes. The carbon plate is a composite material formed by bonding epoxy resin and carbon fiber filaments. The carbon plate has the advantages of light weight, good toughness and good strength. The basketball shoes or running shoes made from it have high elasticity and extend their service life. At the same time, the soles will not deform under high exercise volume.

[0003] The carbon plate sole usually includes a first bottom, a carbon plate and a second bottom. The traditional manufacturing process of the carbon plate sole is: first, the first bottom is foamed and formed, then the second bottom is foamed and formed, and finally one side of the carbon plate is bonded to the first bottom and the other side of the carbon plate is bonded to the second bottom.

[0004] However, the production process of traditional carbon plate soles has many steps and takes a long time. Two sets of molds are needed to make the first bottom and the second bottom respectively, which is costly. After the carbon plate is bonded to the first bottom and the second bottom, there is a phenomenon of loose bonding, which affects the overall strength.

[0005] In order to solve the problems of traditional carbon plate sole production, a mold that can foam and mold the carbon plate and the midsole as one piece has appeared in the existing market. For example, China Authorization Announcement No. CN216860383U discloses a sole foaming molding mold, including a first mold body and a second mold body; the first mold body can be close to or away from the second mold body, and a cavity for foaming molding is formed between the first mold body and the second mold body, and a positioning structure for positioning one side of the reinforcing plate is provided in the first mold body; a clamping structure for clamping the other side of the reinforcing plate is provided in the second mold body. Although this sole mold can foam and mold the midsole as one piece, so that the carbon plate and the midsole are firmly connected, it still needs to be bonded with the RB outsole in the later stage, and the RB outsole cannot be foamed and molded together with the midsole and the carbon plate, which makes the sole manufacturing process complicated, the production efficiency is low, and the cost is high. At the same time, there are also problems such as the RB and the midsole cannot be firmly bonded. Utility Model Content

[0006] In order to overcome the above-mentioned deficiencies existing in the prior art, the purpose of the utility model is to provide an ETPU sole foaming molding mold, which can integrally mold the RB outsole, ETPU midsole and carbon plate to improve production efficiency and overall strength of the sole.

[0007] The utility model is achieved through the following technical scheme: an ETPU sole foaming molding mold, including an upper mold and a lower mold, the lower mold can be close to or away from the upper mold, the lower mold is provided with a cavity for placing the shoe outsole, a middle frame movably connected to the upper mold is provided between the upper mold and the lower mold, a cavity for foaming molding is formed between the upper mold and the lower mold, a positioning structure for positioning one side of a reinforcing plate is provided in the lower mold, a first clamping structure for clamping the other side of the reinforcing plate is provided in the upper mold, the positioning structure is movably arranged in the lower mold, and a second clamping structure for clamping the shoe outsole is also provided on the upper mold.

[0008] Preferably, the positioning structure of the utility model includes a supporting positioning block, one end of which is inserted into the interior of the lower mold and used to position the reinforcing plate, and the end is protruded toward the surface of the cavity so that the reinforcing plate can be formed inside the midsole of the shoe, and a limiting plate is provided at the other end of the supporting positioning block.

[0009] Preferably, the lower mold of the utility model further comprises a lower mold cover plate connected thereto, a cavity for accommodating a limit plate is formed between the lower mold cover plate and the lower mold, and a first elastic member is provided between the limit plate and the lower mold cover plate.

[0010] Preferably, the first clamping structure of the utility model includes a first fixed plate and a first pressure rod for clamping the reinforcing plate, one end of the first pressure rod penetrates into the upper mold into the cavity and clamps the reinforcing plate, the other end of the first pressure rod is connected to the first fixed plate, the first fixed plate and the middle frame are movably connected by a second elastic member, and the upper mold is provided with a first through hole for the first pressure rod to pass through.

[0011] Preferably, a positioning pin is provided at the end of the first pressure rod of the utility model, and the end is inserted into the upper mold into the cavity and presses the reinforcing plate, and a positioning hole is provided on the reinforcing plate for cooperating with the positioning pin for positioning.

[0012] Preferably, the second clamping structure of the utility model includes a second fixed plate and a second pressure rod for clamping the shoe outsole, one end of the second pressure rod penetrates into the upper mold into the cavity and clamps the shoe outsole, the other end of the second pressure rod is connected to the second fixed plate, the second fixed plate is arranged on the upper mold, the upper mold is provided with a second through hole for the second pressure rod to pass through, and the second fixed plate is also provided with an upper mold return top column for resisting the lower mold.

[0013] Preferably, the upper mold of the utility model also includes an upper mold top plate and an upper mold top rod, the upper mold top plate is connected to the upper mold through the upper mold top rod, and a third elastic member is provided between the upper mold top plate and the second fixed plate, one end of the third elastic member abuts against the upper mold top plate, and the other end of the third elastic member abuts against the second fixed plate.

[0014] Preferably, the upper die of the utility model is provided with a feed port.

[0015] Preferably, a locking hole with corresponding position is provided between the upper die and the lower die of the utility model.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects: the utility model compresses the reinforcing plate through the first pressing structure and the outsole through the second pressing structure respectively; before making the sole, the reinforcing plate is placed on the positioning structure and the outsole is placed at the bottom of the cavity, so that in the process of forming the midsole, the midsole and the reinforcing plate are foamed and formed as one body, and at the same time the outsole and the midsole can be pasted together to obtain an integrated sole with the midsole, the outsole and the built-in reinforcing plate, which is more in line with the use characteristics of the sole, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 This is a schematic diagram of a transverse partial cross-sectional structure of the utility model;

[0019] Figure 2 It is a longitudinal partial cross-sectional structural schematic diagram of the utility model;

[0020] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of;

[0021] Figure 4 It is an exploded view of the utility model;

[0022] in:

[0023] 1—upper mold, 10—mold cavity, 11—cavity, 12—first through hole, 13—second through hole, 14—upper mold top plate, 15—upper mold top rod, 16—feed port, 17—locking hole, 100—middle frame positioning groove, 140—feed hole;

[0024] 2—lower die, 20—lower die cover plate, 21—chamber, 22—first elastic member, 200—lower die return top column;

[0025] 3—shoe outsole; 4—middle frame, 40—installation portion, 41—installation hole, 400—positioning portion;

[0026] 5—reinforcement plate, 50—positioning hole;

[0027] 6—positioning structure, 60—supporting positioning block, 61—limiting plate;

[0028] 7—first pressing structure, 70—first fixing plate, 71—first pressing rod, 72—second elastic member, 73—positioning pin;

[0029] 8—second pressing structure, 80—second fixing plate, 81—second pressing rod, 82—third elastic member;

[0030] 9—The upper mold returns to the ejector column. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Reference Figure 1 , Figure 2 and Figure 3As shown, an ETPU sole foaming molding mold includes an upper mold 1 and a lower mold 2, the lower mold 2 can be close to or away from the upper mold 1, a cavity 10 for placing the outsole 3 is provided in the lower mold 2, a middle frame 4 movably connected to the upper mold 1 is provided between the upper mold 1 and the lower mold 2, a cavity 11 for foaming molding is formed between the upper mold 1 and the lower mold 2, a positioning structure 6 for positioning one side of the reinforcing plate 5 is provided in the lower mold 2, a first clamping structure 7 for clamping the other side of the reinforcing plate 5 is provided in the upper mold 1, the positioning structure 6 can be movably arranged in the lower mold 2, and a second clamping structure 8 for clamping the outsole 3 is also provided on the upper mold 1. In this example, the reinforcing plate 5 takes a carbon plate as an example, of course, it can also be other types of reinforcing plates 4, such as TPU.

[0035] In order to be able to position the carbon plate, the following specific structure is specifically adopted in this example: the positioning structure 6 includes a supporting positioning block 60, one end of which is inserted into the lower mold 2 and is used to position the carbon plate, and the other end of the supporting positioning block 60 is provided with a limiting plate 61, and the limiting plate 61 and the supporting positioning block 60 are integrally formed. The limiting plate 61 can limit the supporting positioning block 60 in the cavity 11, so that one end of the supporting positioning block 60 can be protruded toward the surface of the cavity 10, so that the reinforcing plate 5 can be formed inside the midsole of the shoe.

[0036] Specifically, after one end of the support positioning block 60 is inserted into the lower mold 2, the end face is used to position one side of the carbon plate, while the other side of the carbon plate is clamped and fixed by the first clamping structure 7; the lower mold 2 also includes a lower mold cover plate 20 connected to the lower mold 2, and the lower mold cover plate 20 and the lower mold 2 are tightened and fixed by fasteners to form a chamber 21 for accommodating a limit plate 61 between the lower mold cover plate 20 and the lower mold 2, and the limit plate 61 is located on the lower bottom surface of the lower mold 2, and a first elastic member 22 is provided between the limit plate 61 and the lower mold cover plate 20, wherein the first elastic member 22 can be a compression spring.

[0037] In this example, the first clamping structure 7 includes a first fixed plate 70 and a first pressure rod 71 for compressing the carbon plate. A first through hole 12 is provided on the upper mold 1 for the first pressure rod 71 to pass through. One end of the first pressure rod 71 passes through the first through hole 12 into the cavity 11 and compresses the carbon plate. The other end of the first pressure rod 71 is connected to the first fixed plate 70. In this embodiment, the first pressure rod 71 and the first fixed plate 70 are integrally formed. At the same time, there are multiple first pressure rods 71 ​​so that the carbon plate can be completely compressed, thereby increasing the strength of the positioning structure. The first fixed plate 70 and the middle frame 4 are movably connected by a second elastic member 72, wherein the second elastic member 72 can be a compression spring.

[0038] In order to position the middle frame 4 when the upper mold and the lower mold are closed, a middle frame positioning groove 100 for positioning the middle frame is provided on the upper mold 1. The middle frame positioning groove 100 is distributed along the outer periphery of the cavity 10 so that the middle frame 4 can sleeve the cavity 10 inside. An outwardly protruding mounting portion 40 is provided on the middle frame 4. A mounting hole 41 is opened on the mounting portion 40. The mounting hole 41 is passed through the bolt to tighten and fix it to the first fixing plate 70. The second elastic member 72 is sleeved on the bolt and is located between the first fixing plate 70 and the mounting portion 40, so that the first fixing plate 70 and the middle frame 4 can be elastically connected.

[0039] In some examples, a lower mold return pillar 200 for resisting the middle frame is further provided on the first fixed plate 70, and a positioning portion 400 corresponding to the position of the lower mold return pillar 200 is provided on the middle frame 4. The positioning portion 400 is protruded toward the side of the middle frame 4, and the lower mold return pillar 200 passes through the mating surface between the lower mold and the upper mold, and can resist the positioning portion 400 of the middle frame, so that when the mold is removed, the lower mold return pillar 200 can push the middle frame upward to make it easier for the upper mold and the lower mold to be demolded.

[0040] In this example, a positioning pin 73 is provided at the end of the first pressure rod 71, and the end is inserted into the upper mold 1 to the cavity 11 and presses the carbon plate. A positioning hole 50 is provided on the carbon plate to cooperate with the positioning pin 73 for positioning, wherein the positioning hole 50 can also be replaced by a positioning groove, and the inner diameter of the positioning hole 50 is slightly larger than the outer diameter of the positioning pin 73. The positioning pin 73 can be inserted into the positioning hole 50 of the carbon plate to prevent the carbon plate from shaking. Among them, the end of the positioning pin 511 can be truncated cone-shaped, and correspondingly, the positioning hole 50 can also be truncated cone-shaped. In this way, when the positioning pin 73 is inserted into the positioning hole 41 of the carbon plate, the side wall of the positioning hole 41 can slide in along the outer wall of the positioning pin 73, thereby making positioning more convenient and greatly improving the positioning efficiency.

[0041] In order to make the shoe midsole bonded with the shoe outsole during molding, the shoe outsole is placed on the cavity 10 of the lower mold 2 during production, and the second pressing structure 8 presses the shoe outsole; the second pressing structure 8 includes a second fixing plate 80 and a second pressing rod 81 for pressing the shoe outsole 3, and there are multiple second pressing rods 81, and the multiple second pressing rods 81 are distributed along the edge and the middle of the cavity 10, and can completely press the entire shoe outsole. Specifically, one end of each second pressing rod 81 penetrates the upper mold 1 into the cavity 11 and presses the shoe outsole 3, and the other end of the second pressing rod 81 is connected to the second fixing plate 80, and the second fixing plate 80 and the second pressing rod 81 are integrally formed, and the second fixing plate 80 is arranged on the upper mold 1, and the upper mold 1 is provided with a second through hole 13 for the second pressing rod 81 to pass through, and the second pressing rod 81 passes through the second through hole 13 to press the shoe outsole 3.

[0042] In some examples, the upper mold 1 further includes an upper mold top plate 14 and an upper mold top rod 15, the upper mold top plate 14 is connected to the upper mold 1 through the upper mold top rod 15, one end of the upper mold top rod 15 is fixedly connected to the upper mold top plate 14, and the other end of the upper mold top rod 15 passes through the second fixed plate 80 and is fixedly connected to the upper mold 1, and the second fixed plate 80 is provided with a through hole for the upper mold top rod 15 to pass through, or the second fixed plate 80 is hollowed out so that the upper mold top rod 15 can pass through the second fixed plate 80 and be connected to the upper mold 1, A third elastic member 82 is provided between the top plate 14 and the second fixed plate 80, one end of the third elastic member 82 abuts against the upper mold top plate 14, and the other end of the third elastic member 82 abuts against the second fixed plate 80. The second fixed plate 80 is also provided with an upper mold return top post 9 for abutting against the lower mold. The upper mold return top post 9 and the second fixed plate 80 are integrally formed to make the structure more stable. When the sole is demoulded, after the third elastic member 82 returns, the upper mold return top post 9 can abut against the lower mold to return, which is convenient for demoulding. Among them, the third elastic member 82 can be a compression spring.

[0043] In order to facilitate the injection of the foaming material, in this example, a feed port 16 is provided on the upper mold 1, and a feed hole 140 for a feed gun to enter is provided on the upper mold top plate 14.

[0044] In order to facilitate the disassembly and assembly of the mold on the frame, a locking hole 17 with corresponding position is provided between the upper mold 1 and the lower mold 2. The upper mold 1 is fixed to the upper part of the machine platform and the lower mold is fixed to the lower part of the machine platform through the fasteners passing through the locking hole 17. Then, the upper mold 1 and the lower mold 2 are opened and closed by the machine locking device.

[0045] In addition, the utility model can simultaneously produce a pair of soles in the same mold. Two cavities 10 for molding left and right soles are arranged on the mold. A shoe outsole is installed in each cavity 10, so that two soles can be molded at one time, thereby improving manufacturing efficiency.

[0046] That is to say, when making the sole, the reinforcement plate is placed on the positioning structure in the lower mold, the outsole is placed at the bottom of the cavity, the upper mold and the lower mold are respectively fixed on the molding machine, and then the lower mold moves toward the upper mold to a certain distance, and then the foaming particles are injected into the cavity 11 through the feed port of the upper mold. Then, water vapor is used to drive the foaming particles to foam, and then the lower mold continues to move toward the upper mold. Finally, the foaming particles are foamed and formed in the cavity 11 and partially wrap the reinforcement plate 5, so that in the process of molding the midsole, the midsole and the reinforcement plate are foamed and formed as a whole, and at the same time, the outsole 3 can be pasted together with the midsole to obtain an integrated sole with a midsole, an outsole and a built-in carbon plate, which is more in line with the use characteristics of the sole, thereby improving production efficiency.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An ETPU sole foaming molding die, comprising an upper die (1) and a lower die (2), wherein the lower die (2) can be moved close to or away from the upper die (1), and characterized in that: The lower mold (2) is provided with a mold cavity (10) for placing a shoe outsole (3); a middle frame (4) movably connected to the upper mold (1) is provided between the upper mold (1) and the lower mold (2); a cavity (11) for foaming is formed between the upper mold (1) and the lower mold (2); a positioning structure (6) for positioning one side of the reinforcing plate (5) is provided in the lower mold (2); a first clamping structure (7) for clamping the other side of the reinforcing plate (5) is provided in the upper mold (1); the positioning structure (6) is movably arranged in the lower mold (2); and a second clamping structure (8) for clamping the shoe outsole (3) is also provided on the upper mold (1).

2. The ETPU sole foaming molding mold according to claim 1, characterized in that: The positioning structure (6) comprises a support positioning block (60), one end of which penetrates into the interior of the lower mold (2) and is used to position the reinforcing plate (5), and the end is arranged to protrude toward the surface of the cavity (10) so that the reinforcing plate (5) can be formed inside the midsole of the shoe, and the other end of the support positioning block (60) is provided with a limiting plate (61).

3. An ETPU sole foaming molding mold according to claim 2, characterized in that: The lower die (2) further comprises a lower die cover plate (20) connected thereto, a chamber (21) for accommodating a limit plate (61) is formed between the lower die cover plate (20) and the lower die (2), and a first elastic member (22) is provided between the limit plate (61) and the lower die cover plate (20).

4. The ETPU sole foaming molding mold according to claim 3, characterized in that: The first clamping structure (7) comprises a first fixing plate (70) and a first pressing rod (71) for pressing the reinforcing plate (5); one end of the first pressing rod (71) penetrates the upper mold (1) into the cavity (11) and presses the reinforcing plate (5); the other end of the first pressing rod (71) is connected to the first fixing plate (70); the first fixing plate (70) and the middle frame (4) are movably connected via a second elastic member (72); and a first through hole (12) for the first pressing rod (71) to pass through is provided on the upper mold (1).

5. The ETPU sole foaming molding die according to claim 4, characterized in that: A positioning pin (73) is provided at the end of the first pressure rod (71), and the end penetrates the upper mold (1) into the cavity (11) and presses the reinforcing plate (5), and a positioning hole (50) is provided on the reinforcing plate (5) for cooperating with the positioning pin (73) for positioning.

6. The ETPU sole foaming molding mold according to claim 5, characterized in that: The second pressing structure (8) comprises a second fixing plate (80) and a second pressing rod (81) for pressing the shoe outsole (3); one end of the second pressing rod (81) penetrates the upper mold (1) into the cavity (11) and presses the shoe outsole (3); the other end of the second pressing rod (81) is connected to the second fixing plate (80); the second fixing plate (80) is arranged on the upper mold (1); the upper mold (1) is provided with a second through hole (13) for the second pressing rod (81) to pass through; and the second fixing plate (80) is provided with an upper mold return top column (9).

7. The ETPU sole foaming molding die according to claim 6, characterized in that: The upper mold (1) further comprises an upper mold top plate (14) and an upper mold top rod (15); the upper mold top plate (14) is connected to the upper mold (1) via the upper mold top rod (15); a third elastic member (82) is provided between the upper mold top plate (14) and the second fixed plate (80); one end of the third elastic member (82) abuts against the upper mold top plate (14), and the other end of the third elastic member (82) abuts against the second fixed plate (80).

8. The ETPU sole foaming molding die according to claim 7, characterized in that: The upper die (1) is provided with a feed port (16).

9. An ETPU sole foaming molding die according to claim 1 or 8, characterized in that: A locking hole (17) with corresponding positions is provided between the upper die (1) and the lower die (2).

Images