Molding system of three-layer shoe sole

Abstract

The utility model discloses a three-layer sole molding system, which comprises a bottom mold, a left side mold and a right side mold which are matched with each other, the corresponding left side mold and right side mold can be opened and closed, and the three-layer sole molding system is characterized in that small side molds are respectively hinged on two sides of a mounting seat of the bottom mold, and are provided with turnover power sources; a first false last, a second false last and a last head are sequentially arranged above the bottom die in a switchable mode, the first false last and the bottom die are matched with each other to form an outsole forming cavity, the corresponding first false last covers the bottom die in a sealed mode, and the second false last, the small side die and the formed outsole are matched with each other to form a third-layer sole forming cavity. Correspondingly, the small side mold is turned upwards to the upper end of the bottom mold to define the side boundary of a third-layer bottom forming cavity, the second fake last covers the small side mold in a sealed mode, the left side mold and the right side mold are folded to form an upper support of the second fake last and a side support of the small side mold, and the shoe last, the left side mold, the right side mold and the formed third-layer bottom are matched with one another to form an insole forming cavity. The three-layer shoe sole forming machine is reasonable in structure, and three-layer shoe soles can be formed stably and efficiently.

Description

Technical Field

[0001] The utility model relates to an improved invention in the field of shoemaking, in particular to an improved invention of a molding system for a three-layer sole. Background Art

[0002] In the field of PU shoemaking, it is sometimes necessary to create a three-layer sole: a PU outsole, a PU midsole, and a third PU layer. The outsole is a rubber layer, offering excellent wear resistance and grip. The second midsole is made of a plastic and elastic PU material, providing excellent shock absorption. The third PU layer, molded between the outsole and midsole, enhances aesthetics while also providing support and stability. Conventional upper injection molding machines struggle to achieve this due to their high demands. Conventional PU dual-density soles require the outsole to be molded first, followed by the midsole, which is then formed between the molded outsole and the upper (bottom). Limited by the size of each station in the machine, shoes can only be produced with two soles. However, with the rapid advancement of shoemaking technology, adding a third PU layer not only enhances aesthetics but also provides excellent support and stability. With the increasing number of athletic shoe styles and shapes, and consumers' increasingly demanding aesthetics and performance requirements, this process is gaining increasing popularity. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a three-layer sole molding system which has a reasonable structure, is stable and has high efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: the molding system of the three-layer sole includes a matching bottom mold and left and right side molds, the corresponding left and right side molds can be opened and closed, and the bottom mold can be lifted and lowered, and is characterized in that: the lower end of the bottom mold is provided with a mounting seat, and small side molds are hinged on both sides of the mounting seat, and the corresponding small side molds can be flipped to the upper end of the bottom mold to seal and fit therewith, and the small side molds are equipped with a flipping power source; the top of the bottom mold can be switched in sequence with a false last 1, a false last 2 and a last head, and the false last 1 cooperates with the bottom mold to form a large sole molding cavity. The corresponding false last 1 sealing cover is applied to the bottom mold, the false last 2, the small side mold and the formed outsole cooperate with each other to form the third-layer bottom forming cavity, the corresponding small side mold is turned up to the upper end of the bottom mold to enclose the side boundary of the third-layer bottom forming cavity, the false last 2 sealing cover is applied to the small side mold, the left and right side molds are closed to form the upper support of the false last 2 and the side support of the small side mold, the last head, the left and right side molds and the formed third-layer bottom cooperate with each other to form the midsole forming cavity, the corresponding left and right side molds are closed to form the side boundary of the midsole forming cavity, the lower end of the last head matches and extends between the left and right side molds, and the small side mold remains turned up.

[0005] Front and rear hinged seats are respectively provided on both sides of the mounting seat, the small side mold is arranged on the flip seat, the flip seat is hingedly cooperated with the front and rear hinged seats, and an attached plate is provided at the lower end of the flip seat. The flip power source is a cylinder, the cylinder is arranged in the mounting seat, the tail end or middle part of the cylinder is hinged to the cylinder seat, and the cylinder driving end is hinged to the attached plate.

[0006] The small side mold is detachably replaceable and is arranged on the turning seat.

[0007] The first false last, the second false last and the last are arranged around a rotating head, the rotating head is arranged on a ram, and the ram can be raised and lowered on a vertical guide rail.

[0008] The axis of the rotating head is arranged to be tilted downward, and the rotating head forms a shoe last rotation area along its axis. Several shoe last mounting surfaces are evenly distributed on the rotating head in the circumferential direction, and the shoe last mounting surfaces are tilted toward the axis of the rotating head. The corresponding false last 1, false last 2 and last are in a vertical state when the rotating head rotates to the lower position in time.

[0009] The axis of the rotating head is perpendicular to the pillow surface of the ram, and the pillow surface of the corresponding ram is inclined forward.

[0010] The mounting base of the bottom mold is arranged on a movable trolley, and the corresponding bottom mold can move forward and backward, and the outward-moving bottom mold cooperates with a spraying device or a pouring device.

[0011] A concave cavity is formed on a lower end of the false last and is matched to cover and engage with the upper end of the bottom mold.

[0012] The beneficial effect of the present invention is the improved three-layer sole molding system. The false last 1, false last 2 and last head can be switched in sequence above the bottom mold to cooperate with the bottom mold, small side mold and left and right side molds to complete the molding of the outsole, third-layer sole and midsole. Among them, the small side mold is innovatively added. The small side mold can be flipped and set on the mounting seat of the bottom mold. The small side mold is flipped up to the upper end of the bottom mold to enclose the side boundary of the third-layer sole molding cavity, and cooperates with the false last 2 and the formed outsole to form the third-layer sole molding cavity, thereby breaking through the traditional double-layer sole production process and stably and efficiently producing shoes with three-layer soles. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0014] Figure 1 This is a process diagram of the outsole forming process of the present invention.

[0015] Figure 2 This is a diagram of the third bottom layer forming process of the present invention.

[0016] Figure 3 This is a process diagram of the midsole molding process of the present invention.

[0017] Figure 4 For this utility model Figure 1 Corresponding device status diagram.

[0018] Figure 5 For this utility model Figure 2 Corresponding device status diagram.

[0019] Figure 6 For this utility model Figure 3 Corresponding device status diagram.

[0020] Figure 7 This is a three-dimensional diagram of the structure of the bottom mold and the small side mold of the present invention.

[0021] Figure 8 For this utility model Figure 7 side view of the structure.

[0022] Figure 9 For this utility model Figure 8 AA cross-sectional view.

[0023] Figure 10 For this utility model Figure 9 Diagram of the small side mold in the outward-turned state.

[0024] Figure 11 This is a structural diagram of a shoe with three-layer soles made by the present invention.

[0025] Figure 12 It is a side view of the equipment corresponding to the present utility model. DETAILED DESCRIPTION

[0026] The accompanying drawings show the structure of the present invention, and the following further describes its relevant details in conjunction with the accompanying drawings. Figure 1-12The molding system of the three-layer sole includes a matching bottom mold 2 and left and right side molds 5. The corresponding left and right side molds 5 can be opened and closed, and are equipped with an opening and closing power source. The opening and closing power source is preferably a cylinder. The bottom mold 2 can be lifted and lowered, and is equipped with a lifting power source. The lifting power source is preferably a cylinder. A mounting seat 7 is provided at the lower end of the bottom mold 2. Small side molds 4 are hinged on both sides of the mounting seat 7. The corresponding small side molds 4 can be flipped to the upper end of the bottom mold 2 to seal and fit therewith, and the small side molds 4 are equipped with a flipping power source 15; the top of the bottom mold 2 can be switched in sequence with a false last 1, a false last 3 and a last 6. The false last 1 and the bottom mold 2 cooperate with each other to form a large sole molding cavity, and the corresponding false last 1 is sealed and covered. On the base mold 2, the second fake last 3, the small side mold 4, and the formed outsole 20 cooperate to form the third-layer sole forming cavity. The corresponding small side mold 4 is flipped up to the upper end of the base mold 2 to enclose the side boundaries of the third-layer sole forming cavity. The second fake last 3 is sealed and covered on the small side mold 4. The left and right side molds 5 are closed to form the upper support of the second fake last 3 and the side support of the small side mold 4. The last 6, the left and right side molds 5, and the formed third-layer sole 21 cooperate to form the midsole forming cavity. The corresponding left and right side molds 5 are closed to form the side boundaries of the midsole forming cavity. The left and right side molds 5 are sealed and attached to the upper end surface of the small side mold 4. The lower end of the last 6 matches and extends between the left and right side molds 5. The upper 23 is mounted on the last 6, and the small side mold 4 remains flipped up. The side boundaries of the outsole forming cavity on the base mold 2, the side boundaries of the three-layer sole forming cavity, and the side boundaries of the midsole forming cavity are seamlessly connected, meeting the molding requirements of the three-layer sole.

[0027] As a further improved specific implementation method, the front and rear hinged seats 12 are respectively provided on both sides of the mounting seat 7, and the small side mold 4 is arranged on the flip seat 13. The flip seat 13 is hingedly matched with the front and rear hinged seats 12 through a rotating pin, and an attached plate 14 is provided at the lower end of the flip seat 13. The flip power source 15 is a cylinder, which is arranged in the mounting seat 7. The tail end or middle part of the cylinder is hinged to the cylinder seat 11, and the cylinder driving end is hinged to the attached plate 14 to drive the flip seat 13 to flip, thereby driving the small side mold 4 to flip.

[0028] As a further improved specific implementation method, the small side mold 4 is detachably and replaceably arranged on the flip seat 13 and is connected by fasteners such as bolts to facilitate rapid disassembly of the small side mold 4 for cleaning or replacement, thereby improving disassembly and assembly efficiency.

[0029] As a further improved embodiment, the first and second false lasts 1, 3, and the last 6 are mounted on a rotating head 16. The rotating head 16 is mounted on a ram 17. The ram 17 is raised and lowered on vertical guide rails 18 to enable the rotation and switching of the first and second false lasts 3, and the last 6, as well as the lifting and lowering of the base mold 2, left and right side molds 5, and small side mold 4 to form the outsole, midsole, and third layer of the sole. The rotating head 16 can be driven by a reduction motor or manually, and is equipped with a positioning structure such as a ball bearing. The ram 17 can be raised and lowered by a pneumatic or hydraulic cylinder.

[0030] As a further improved specific implementation method, the axis of the rotating head 16 is arranged to be tilted downward, and the rotating head 16 forms a shoe last rotation area along its axis direction, and a number of shoe last mounting surfaces are evenly distributed on the rotating head 16 in the circumferential direction, and the shoe last mounting surfaces are tilted toward the axis of the rotating head 16. The corresponding false last 1, false last 2 3 and last head 6 are in a vertical state when they are rotated to the lower position with the rotating head 16 in time; preferably, the axis of the rotating head 16 is perpendicular to the pillow surface of the slide 17, and the pillow surface of the corresponding slide 17 is set to be tilted upward, so as to realize the downward tilt of the axis core of the rotating head 16.

[0031] As a further improved specific implementation method, the mounting seat 7 of the bottom mold 2 can be raised and lowered on the mobile trolley 19, and the lifting power source of the bottom mold 2 is provided at the lower end of the mobile trolley 19. The corresponding bottom mold 2 can move back and forth with the mobile trolley 19, and the outward-moved bottom mold 2 cooperates with the spraying device or the pouring device to realize the pouring or spraying molding of the large bottom.

[0032] As a further improved specific implementation method, the lower end of the false last 1 is formed with a concave cavity, and is matched to cover the upper end of the bottom mold 2, so that when the bottom mold 2 rises, it can squeeze the outsole molding material to prevent the material from overflowing from the side.

[0033] The working principle of this utility model is:

[0034] Step 1, the outsole 20 forming process, install the mold on the turntable station, after the whole set of molds are installed, start to put the upper 23 on the last 6, and complete the upper process. Figure 1 The workstation is in a state where the left and right side molds 5 are open and the small side mold 4 is flipped down. The rotating head 16 rotates to complete the flipping of the shoe last, so that the false last 1 installed on the rotating head descends downward, and the lower contact surface of the false last 1 contacts the upper contact surface of the bottom mold 2 to form a closed injection area, that is, the outsole molding cavity. Then, the injection device is used to inject material to complete the outsole molding, or the bottom mold 2 is moved outward with the mobile trolley 19, and spraying or pouring is used, and then it is moved back to its original position, and the false last 1 descends to cover the bottom mold 2 to complete the molding of the outsole 20.

[0035] Step 2: The third bottom layer 21 forming process, such as Figure 2The workstation rotary head rises and rotates to complete the flipping of the shoe last. The flipping power source pushes the small side mold 4 to flip and close. The false last 2 3 installed on the rotating head 16 descends, and the left and right side molds 5 are closed. The false last 2 3, the small side mold 4 and the large sole formed on the bottom mold 2 form a closed injection area, that is, the third layer sole molding cavity. Then, the injection device is used to inject material to complete the molding of the third layer sole 21.

[0036] Step 3: midsole 22 forming process, such as Figure 3 After the workstation rotary head rises and rotates to complete the last turning, the last 6 installed on the rotary head 16 is lowered, and the left and right side molds 5 are closed, or after the left and right side molds 5 are closed, the last 6 is lowered, and the upper 23 outside the last 6 forms a material injection closed area with the left and right side molds 5 and the formed third layer of the sole, that is, the midsole molding cavity, and then the injection device is used to inject material to complete the molding of the midsole 22.

[0037] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A three-layer sole molding system comprising a bottom mold and left and right side molds, wherein the left and right side molds can be opened and closed, and the bottom mold can be raised and lowered, characterized in that: The bottom mold is provided with a mounting seat at the lower end, and small side molds are hinged on both sides of the mounting seat, and the corresponding small side molds can be flipped to the upper end of the bottom mold to seal and fit therewith, and the small side molds are equipped with a flipping power source; the top of the bottom mold can be switched in sequence with a false last 1, a false last 2 and a last head, and the false last 1 cooperates with the bottom mold to form a large bottom molding cavity, and the corresponding false last 1 sealing cover is closed on the bottom mold, and the false last 2, the small side mold and the formed large bottom cooperate with each other to form a third-layer bottom molding cavity, and the corresponding small side mold is flipped up to the upper end of the bottom mold to enclose the side boundary of the third-layer bottom molding cavity, and the false last 2 sealing cover is closed on the small side mold, and the left and right side molds are closed to form the upper support of the false last 2 and the side support of the small side mold, and the last head, the left and right side molds and the formed third-layer bottom cooperate with each other to form a midsole molding cavity, and the corresponding left and right side molds are closed to form the side boundary of the midsole molding cavity, and the lower end of the last head matches and extends between the left and right side molds, and the small side mold remains in an flipped-up state.

2. The molding system of the three-layer sole according to claim 1, characterized in that: Front and rear hinged seats are respectively provided on both sides of the mounting seat, the small side mold is arranged on the flip seat, the flip seat is hingedly cooperated with the front and rear hinged seats, and an attached plate is provided at the lower end of the flip seat. The flip power source is a cylinder, the cylinder is arranged in the mounting seat, the tail end or middle part of the cylinder is hinged to the cylinder seat, and the cylinder driving end is hinged to the attached plate.

3. The molding system of the three-layer sole according to claim 2, characterized in that: The small side mold is detachably replaceable and is arranged on the turning seat.

4. The molding system of the three-layer sole according to claim 1, characterized in that: The first false last, the second false last and the last are arranged around a rotating head, the rotating head is arranged on a ram, and the ram can be raised and lowered on a vertical guide rail.

5. The molding system of the three-layer sole according to claim 4, characterized in that: The axis of the rotating head is arranged to be tilted downward, and the rotating head forms a shoe last rotation area along its axis. Several shoe last mounting surfaces are evenly distributed on the rotating head in the circumferential direction, and the shoe last mounting surfaces are tilted toward the axis of the rotating head. The corresponding false last 1, false last 2 and last are in a vertical state when the rotating head rotates to the lower position in time.

6. The molding system of the three-layer sole according to claim 4 or 5, characterized in that: The axis of the rotating head is perpendicular to the pillow surface of the ram, and the pillow surface of the corresponding ram is inclined forward.

7. The molding system of the three-layer sole according to claim 1, characterized in that: The mounting base of the bottom mold is arranged on a movable trolley, and the corresponding bottom mold can move forward and backward, and the outward-moving bottom mold cooperates with a spraying device or a pouring device.

8. The three-layer sole molding system according to claim 1, wherein: A concave cavity is formed on a lower end of the false last and is matched to cover and engage with the upper end of the bottom mold.

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