Foam forming shoe sole mold

Abstract

The utility model relates to the technical field of molds, and particularly discloses a foam molding sole mold. The mold comprises an upper mold body and a lower mold body, the lower mold body is provided with two mold core grooves used for forming, mold core inserts are fixed in the mold core grooves, and the upper mold body, the mold core grooves and the mold core inserts are combined to form a forming cavity; a feeding groove structure used for feeding is arranged on the rear side of the lower die, and an adjusting structure used for adjusting feeding is arranged on the feeding groove structure. The front side of the upper die and the front side of the lower die are provided with exhaust groove structures used for exhausting air, the exhaust groove structures are connected with air extraction equipment, the air extraction equipment is used for extracting air in the forming cavity, and sealing ring structures are arranged on the outer sides of the feeding groove structure, the die core groove and the exhaust groove structures on the lower die in a surrounding mode. The mold is good in shoe forming effect.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a foam-molded shoe sole mold. Background Technology

[0002] In recent years, with the maturation of 3D metal printing technology, the footwear industry has begun to gradually introduce 3D metal printing into production, using 3D-printed wooden molds to create shoe sole molds with fine textures. Foam molding technology, which involves heating and melting particle materials to form a product structure through a mold, is widely used in shoe sole processing. This technology can improve the elasticity and durability of shoe soles while reducing weight. However, due to the poor fluidity of the material, improper design of the feed chute can affect the product's appearance. Furthermore, if the molten material cannot fill the molding cavity in time, it will affect the product's appearance quality. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a foam-molded shoe sole mold, which produces excellent shoe molding results.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A foam-molded shoe sole mold includes an upper mold and a lower mold. The lower mold has two mold core grooves for molding, and a mold core insert is fixed in each mold core groove. The upper mold, the mold core grooves, and the mold core insert are combined to form a molding cavity. The rear side of the lower mold has a feeding groove structure for feeding material, and the feeding groove structure has an adjustment structure for adjusting the feeding. The front sides of the upper mold and the lower mold have venting groove structures for venting air. The venting groove structures are connected to an air extraction device for extracting air from the molding cavity. A sealing ring structure surrounds the outer sides of the feeding groove structure, the mold core grooves, and the venting groove structure on the lower mold.

[0006] According to some embodiments of the present invention, the feed groove structure includes a Y-shaped main feed groove disposed on the lower mold, a distribution groove disposed in the lower mold and communicating with the main feed groove, and an injection groove disposed in the mold core insert and communicating with the distribution groove. The feed end of the main feed groove is disposed on the outside of the lower mold, and the two discharge ends of the main feed groove extend toward the mold core grooves on both sides and are respectively connected to the distribution groove.

[0007] According to some embodiments of the present invention, the feeding end of the material distribution groove is connected to the discharging end of the main material groove, the material distribution groove extends from one side of its feeding end toward the bottom of the lower mold, the discharging end of the material distribution groove is disposed on the mold core groove, the feeding end of the injection groove is connected to the discharging end of the material distribution groove, the injection groove extends from one side of its feeding end toward the top of the mold core insert, and the discharging end of the injection groove is disposed on the lower side of the top surface of the mold core insert.

[0008] According to some embodiments of the present invention, the venting groove structure includes a first main venting groove disposed on the upper mold, a Y-shaped second main venting groove disposed on the lower mold and communicating with the first main venting groove, a branch venting groove disposed in the lower mold and communicating with the second main venting groove, and an insert venting groove disposed in the mold core insert and communicating with the branch venting groove.

[0009] According to some embodiments of the present invention, the outlet end of the first main exhaust groove is disposed on the top surface of the upper mold, and the suction end of the first main exhaust groove is disposed on the bottom surface of the upper mold.

[0010] According to some embodiments of the present invention, the venting end of the venting groove is disposed on the lower mold, the venting groove extends from one side of its venting end toward the bottom of the lower mold, the suction end of the venting groove is disposed on the mold core groove, the venting end of the insert venting groove is connected to the suction end of the venting groove, the insert venting groove extends from one side of its venting end toward the top of the mold core insert, and the suction end of the insert venting groove is disposed on the front side of the top surface of the mold core insert.

[0011] According to some embodiments of the present invention, the venting groove structure further includes a shallow groove disposed on the lower mold that connects the sub-venting groove, the insert venting groove, and the mold core groove.

[0012] According to some embodiments of the present invention, the sealing ring structure includes an annular sealing groove disposed on the lower mold, the sealing groove having an opening on one side of the feed groove structure of the lower mold.

[0013] According to some embodiments of the present invention, the adjustment structure includes a control rod that penetrates the upper mold and can move up and down within the upper mold, and the feed groove structure has a control groove that matches the control rod. The control rod is used to insert into the control groove to block the material from entering or exiting.

[0014] This utility model has at least the following beneficial effects:

[0015] The feeding trough has a reasonable material channel structure, which optimizes the entry of the material. The venting trough structure is connected to the air extraction equipment to extract air from the molding cavity. The sealing ring structure is used to increase the tightness of the mold closing surface and facilitate vacuuming. Air extraction helps to accelerate the entry of the material and can also reduce bubbles and defects during the molding process. The mold improves the appearance and structural integrity of the product. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the lower mold and mold core insert according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the upper mold according to one embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the lower mold structure according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of a mold core insert according to an embodiment of the present invention. Detailed Implementation

[0020] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0021] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0023] An embodiment of this utility model provides a foam-molded shoe sole mold, such as... Figure 1-4As shown, the device includes an upper mold 101 and a lower mold 102. The lower mold 102 has two mold core grooves 103 for molding, and a mold core insert 2 is fixed within each mold core groove 103. The upper mold 101, the mold core grooves 103, and the mold core insert 2 are combined to form a molding cavity 104. A feeding groove structure 3 for feeding material is provided on the lower side of the lower mold 102, and an adjustment structure 4 for adjusting the feeding material is provided on the feeding groove structure 3. An exhaust groove structure 5 for venting material is provided on the front side of both the upper mold 101 and the lower mold 102. The exhaust groove structure 5 is connected to an air extraction device, which is used to extract air from the molding cavity 104. A sealing ring structure 6 surrounds the outer sides of the feeding groove structure 3, the mold core grooves 103, and the exhaust groove structure 5 on the lower mold 102.

[0024] Specifically, the mold core insert 2 is fixed to the lower mold 102 by screws and other fixing structures. The molding structure of the mold is cast from a 3D-printed wooden mold, with fine texture and good molding effect. The mold core insert 2 can be easily replaced and maintained, reducing the wear of the overall mold and improving the mold's durability. There are two mold core grooves 103, which respectively fix the mold core insert 2 for molding the left shoe sole and the mold core insert 2 for molding the right shoe sole, facilitating the molding of the entire shoe in one go. The feeding groove structure 3 is connected to an external feeding device, and the feeding adjustment structure 4 can be adjusted to flexibly control the material supply and optimize the molding process. The venting groove structure 5 is connected to an air extraction device to extract air from the molding cavity 104, which helps reduce bubbles and defects during the molding process and improves the appearance and structural integrity of the product. The sealing ring structure 6 is used to increase the tightness of the mold mating surfaces and facilitates vacuuming of the molding cavity 104.

[0025] Specifically, this mold is a special mold used for IP injection molding machines. After the granular EVA material is melted at high temperature by the feeding equipment, it is injected into the molding cavity 104 of the mold through the feeding groove structure 3. The air extraction equipment empties the air in the molding cavity 104 through the exhaust groove structure 5 to form a vacuum state, which facilitates the molten EVA material to enter the molding cavity 104 of the mold from the feeding groove structure 3. The product foams and pops out to form the mold the moment the mold is opened.

[0026] In some embodiments, such as Figure 1 , 3 As shown in Figure 4, the feed groove structure 3 includes a Y-shaped main feed groove 301 disposed on the lower mold 102, a distribution groove 302 disposed in the lower mold 102 and communicating with the main feed groove 301, and an injection groove 303 disposed in the mold insert 2 and communicating with the distribution groove 302. The feed end 304 of the main feed groove 301 is disposed on the outside of the lower mold 102, and the two discharge ends 305 of the main feed groove 301 extend toward the mold insert grooves 103 on both sides and are respectively connected to the distribution groove 302.

[0027] The Y-shaped main material groove 301 is designed so that the material can be distributed into the two molding cavities 104. The material distribution groove 302 is connected to the main material groove 301 and can guide the material into the injection groove 303.

[0028] Furthermore, such as Figure 3 , 4 As shown, the feed end 304 of the material distribution groove 302 is connected to the discharge end 305 of the main material groove 301. The material distribution groove 302 extends from one side of its feed end 304 to the bottom of the mold 102. The discharge end 305 of the material distribution groove 302 is set on the mold core groove 103. The feed end 304 of the injection groove 303 is connected to the discharge end 305 of the material distribution groove 302. The injection groove 303 extends from one side of its feed end 304 to the top of the mold core insert 2. The discharge end 305 of the injection groove 303 is set on the lower side of the top surface of the mold core insert 2.

[0029] The material distribution channel 302 extends downward and the injection channel extends upward, forming a V-shaped flow channel that avoids the molding area and increases the injection pressure of the material.

[0030] In some embodiments, such as Figure 1-4 As shown, the venting structure 5 includes a first main venting groove 501 disposed on the upper mold 101, a Y-shaped second main venting groove 502 disposed on the lower mold 102 and communicating with the first main venting groove 501, a sub-venting groove 503 disposed in the lower mold 102 and communicating with the second main venting groove 502, and an insert venting groove 504 disposed in the mold core insert 2 and communicating with the sub-venting groove 503.

[0031] The first main exhaust groove 501 is connected to an air extraction device at its outlet end. The Y-shaped second main exhaust groove 502 is designed so that the gas in both molding cavities 104 can be extracted together. The end of the second main exhaust groove 502 actually has a diffusion groove, which facilitates the absorption of more gas. The insert exhaust groove 504 is connected to the molding cavity 104 and is located at the other end of the injection groove 303, which facilitates air extraction.

[0032] Furthermore, such as Figure 2 As shown, the air outlet of the first main exhaust groove 501 is located on the top surface of the upper mold 101, and the air extraction end of the first main exhaust groove 501 is located on the bottom surface of the upper mold 101.

[0033] The first main exhaust duct 501 can be set vertically or at an angle to facilitate the extraction of air by the extraction equipment.

[0034] Furthermore, such as Figure 1-4As shown, the venting end of the venting groove 503 is located on the lower mold 102. The venting groove 503 extends from one side of its venting end to the bottom of the lower mold 102. The suction end of the venting groove 503 is located on the mold core groove 103. The venting end of the insert venting groove 504 is connected to the suction end of the venting groove 503. The insert venting groove 504 extends from one side of its venting end to the top of the mold core insert 2. The suction end of the insert venting groove 504 is located on the front side of the top surface of the mold core insert 2.

[0035] Specifically set on the top surface of the mold insert 2, it is the last area filled when the liquid enters, which can more effectively remove air and facilitate the entry of liquid. The venting groove 503 extends in the lower mold 102 to avoid the molding area. The venting groove 503 and the second main venting groove 502 can be connected to each other or connected through other grooves.

[0036] In some embodiments, such as Figure 1 , 3 As shown, the venting groove structure 5 also includes a connecting venting groove 503, an insert venting groove 504, and a shallow groove 507 of the mold core groove 103 disposed on the lower mold 102.

[0037] In practice, the exhaust vent 503 and the second main exhaust vent 502 are not directly connected, but are connected through a shallow groove 507. Due to the poor fluidity of the material, the design of the shallow groove 507 can effectively prevent the liquid material from being discharged during vacuuming.

[0038] In some embodiments, such as Figure 1 , 3 As shown, the sealing ring structure 6 includes an annular sealing groove 601 disposed on the lower mold 102, and the sealing groove 601 has an opening 602 on one side of the feed groove structure 3 at the edge of the lower mold 102.

[0039] A sealing ring is placed in the sealing groove 601 to increase the tightness of the mold closing surface, which is conducive to vacuuming the molding cavity 104. The opening 602 does not affect the feeding.

[0040] In some embodiments, such as Figure 1 , 2 As shown, the adjustment structure 4 includes a control rod 401 that passes through the upper mold 101 and can move up and down within the upper mold 101. The feed groove structure 3 has a control groove 402 that matches the control rod 401. The control rod 401 is used to insert into the control groove 402 to block the material from entering or exiting.

[0041] After the feeding equipment completes the feeding, the control rod 401 can be inserted into the control groove 402 to block the feed port, so that the material inside the mold cannot flow back and the pressure in the mold remains unchanged.

[0042] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A foamed shoe sole mold comprising an upper mold (101) and a lower mold (102), characterized in that: The lower mold (102) has two mold core grooves (103) for molding on it, a mold core insert (2) is fixed in the mold core groove (103), and the upper mold (101), the mold core groove (103) and the mold core insert (2) combine to form a molding cavity (104); the rear side of the lower mold (102) is provided with a feeding groove structure (3) for feeding, and the feeding groove structure (3) is provided with an adjusting structure (4) for adjusting the feeding; the front side of the upper mold (101) and the lower mold (102) is provided with an exhaust groove structure (5) for exhaust, the exhaust groove structure (5) is connected with an exhaust device, the exhaust device is used for extracting air in the molding cavity (104), and the outer side of the feeding groove structure (3), the mold core groove (103) and the exhaust groove structure (5) on the lower mold (102) is surrounded by a sealing ring structure (6).

2. A foamed molded shoe sole mold according to claim 1, characterized in that: The feeding groove structure (3) comprises a Y-shaped main feeding groove (301) arranged on the lower mold (102), a branch feeding groove (302) arranged in the lower mold (102) and communicated with the main feeding groove (301), and an injection groove (303) arranged in the mold core insert (2) and communicated with the branch feeding groove (302), the feeding end (304) of the main feeding groove (301) is arranged on the outer side of the lower mold (102), and the two discharging ends (305) of the main feeding groove (301) extend to the directions of the two mold core grooves (103) respectively and are respectively connected with the branch feeding groove (302).

3. A foamed molded shoe sole mold according to claim 2, wherein: The feeding end (304) of the branch feeding groove (302) is connected with the discharging end (305) of the main feeding groove (301), the branch feeding groove (302) extends from the feeding end (304) side to the bottom of the lower mold (102), the discharging end (305) of the branch feeding groove (302) is arranged on the mold core groove (103), the feeding end (304) of the injection groove (303) is connected with the discharging end (305) of the branch feeding groove (302), the injection groove (303) extends from the feeding end (304) side to the top of the mold core insert (2), and the discharging end (305) of the injection groove (303) is arranged on the rear side of the top surface of the mold core insert (2).

4. A foamed molded shoe sole mold according to claim 1, wherein: The exhaust groove structure (5) comprises a first main exhaust groove (501) arranged on the upper mold (101), a Y-shaped second main exhaust groove (502) arranged on the lower mold (102) and communicated with the first main exhaust groove (501), a branch exhaust groove (503) arranged in the lower mold (102) and communicated with the second main exhaust groove (502), and a insert exhaust groove (504) arranged in the mold core insert (2) and communicated with the branch exhaust groove (503).

5. A foamed molded shoe sole mold according to claim 4, wherein: The exhaust end of the first main exhaust groove (501) is arranged on the top surface of the upper mold (101), and the exhaust end of the first main exhaust groove (501) is arranged on the bottom surface of the upper mold (101).

6. A foamed molded shoe sole mold according to claim 4, wherein: The air outlet end of the sub-air vent groove (503) is arranged on the lower mold (102), the sub-air vent groove (503) extends from the side of the air outlet end to the bottom of the lower mold (102), the air suction end of the sub-air vent groove (503) is arranged on the mold core groove (103), the air outlet end of the insert air vent groove (504) is connected with the air suction end of the sub-air vent groove (503), the insert air vent groove (504) extends from the side of the air outlet end to the top of the mold core insert (2), and the air suction end of the insert air vent groove (504) is arranged on the front side of the top surface of the mold core insert (2).

7. A foamed molded shoe sole mold according to any one of claims 5-6, characterized in that: The air vent groove structure (5) further comprises a shallow groove (507) arranged on the lower mold (102) and communicating with the sub-air vent groove (503), the insert air vent groove (504) and the mold core groove (103).

8. A foamed molded shoe sole mold according to claim 1, wherein: The sealing ring structure (6) comprises an annular sealing groove (601) arranged on the lower mold (102), and the sealing groove (601) has an opening (602) on the side of the edge of the lower mold (102) and the feed groove structure (3).

9. A foamed molded shoe sole mold according to claim 1, wherein: The adjusting structure (4) comprises a control rod (401) penetrating through the upper mold (101) and capable of moving up and down in the upper mold (101), and the feed groove structure (3) has a control groove (402) matched with the control rod (401), and the control rod (401) is used for inserting into the control groove (402) to block the feeding in and out.

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