Bicolor forming die for outsole wrapping head
By designing a two-color molding mold for the outsole and toe cap, the problem of difficult demolding when molding complex shoe soles using traditional molds was solved, achieving smooth demolding of the toe cap and color separation, while maintaining the integrity and precision of the shoe design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUALI IND GRP CO LTD
- Filing Date
- 2025-03-05
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional molds are difficult to separate smoothly when molding complex shoe soles, especially those with toe caps and two-tone designs, leading to production difficulties and affecting product design and appearance.
The outsole and toe cap are made using a two-color molding mold. The combination design of the upper mold, middle frame, mold core plate and lower mold forms independent molding cavities for the toe cap and sole. The inclined surface and positioning structure ensure smooth demolding and avoid color mixing.
This process ensured smooth demolding of the toe section, preserved the integrity of the shoe design, avoided modifications to the shoe shape, and guaranteed molding precision and color separation.
Smart Images
Figure CN224145225U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold technology, and in particular to a two-color molding mold for a large bottom cover. Background Technology
[0002] In traditional rubber sole production, conventional outsole molds have certain limitations in the molding process, especially when producing soles with complex structures. For example, simultaneously molding a closed toe and a two-tone structure is even more challenging. Two-tone soles require molding two colors of material in the same mold without color bleeding. When the shoe design includes a closed toe, the inverted bottom of this structure makes it difficult for the mold to open smoothly. Traditional molds often cannot open properly when encountering such closed toe structures, halting production. To solve this problem, modifications to the shoe design are usually required; however, these modifications sacrifice the original design intent, affecting the product's appearance and functionality. 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 two-color molding mold for the bottom cover and toe, which has excellent molding effect and smooth demolding of the toe cover portion.
[0004] To achieve the above objectives, this utility model provides the following technical solution:
[0005] A two-color outsole toe cap molding mold includes: a lower mold, a middle plate disposed on the lower mold, a middle frame disposed on the middle plate and connected to the lower mold, a mold core plate disposed on the middle frame, and an upper mold disposed on the mold core plate and passing through the mold core plate and connected to the middle frame. The upper mold and the middle frame together form the outer part of the toe cap of the shoe. The lower mold and the bottom side of the middle plate are combined to form a sole molding cavity for molding the lower part of the shoe. The upper side of the middle plate, the middle frame, the mold core plate, and the upper mold are combined to form a toe cap molding cavity for molding the upper part of the shoe.
[0006] According to some embodiments of the present invention, the head-forming cavity includes a first forming part disposed on the lower side of the mold core plate, a hollow side forming part disposed on the middle frame, a second forming part disposed on the upper side of the middle plate, and a head-forming part disposed on the bottom side of the upper mold. When the mold is closed, the lower side of the head-forming part passes through the middle frame and connects with the side forming part, and the upper side of the head-forming part abuts against the first forming part.
[0007] According to some embodiments of the present invention, the bottom of the first forming part is provided with a plurality of protrusions for assembly.
[0008] According to some embodiments of the present invention, the head-forming part has a first inclined surface, and the middle frame is provided with a second inclined surface that cooperates with the first inclined surface.
[0009] According to some embodiments of the present invention, the sole forming cavity includes a third forming part disposed on the lower mold and a fourth forming part disposed on the bottom side of the middle plate and cooperating with the third forming part, wherein the second forming part matches the fourth forming part.
[0010] According to some embodiments of the present invention, a lower positioning structure for the shoe is provided on the lower mold, the middle plate, and the middle frame, and an upper positioning structure for the shoe is provided on the upper mold, the mold core plate, and the middle frame.
[0011] According to some embodiments of the present invention, the lower positioning structure of the shoe includes a first limiting block disposed on the lower mold and a second limiting block disposed on the bottom side of the middle frame. The lower mold has a first limiting groove that matches the second limiting block, the bottom side of the middle frame has a second limiting groove that matches the first limiting block, the middle plate has a third limiting groove that matches the first limiting block, and the middle plate has a fourth limiting groove that matches the second limiting block.
[0012] According to some embodiments of the present invention, the lower positioning structure of the shoe includes a hinge bushing disposed on the rear side of the lower mold, a rotating shaft structure hinged in the hinge bushing, and a hinge plate disposed on the rear side of the middle frame and hinged to the hinge bushing via the rotating shaft structure. The hinge plate is provided with an elongated through hole that matches the rotating shaft structure, and the rotating shaft structure can be adjusted up and down within the elongated through hole.
[0013] According to some embodiments of the present invention, the upper positioning structure of the shoe includes a third limiting block disposed on the bottom side of the upper mold and a fourth limiting block disposed on the bottom side of the mold core plate. The upper side of the mold core plate has a fifth limiting groove that matches the third limiting block, and the middle frame has a sixth limiting groove that matches the fourth limiting block.
[0014] According to some embodiments of the present invention, the upper positioning structure of the shoe includes a hinged structure for connecting the middle frame, the mold core plate and the upper mold.
[0015] This utility model has at least the following beneficial effects:
[0016] Adding an upper mold to match the middle frame for molding the outer structure of the shoe toe cap solves the problem of difficult mold opening when the bottom of the outer toe cap has an inward buckle. This eliminates the need for modification or secondary molding of the shoe, preserving the design integrity of the product. The middle plate design allows the upper and lower materials of the shoe to be separated during molding, preventing color interference. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the present utility model;
[0018] Figure 2 This is a schematic diagram of the structure after the middle plate is removed according to one embodiment of the present invention;
[0019] Figure 3 This is a schematic diagram of the bottom side structure of the middle plate 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 two-color molding mold for the bottom cover, such as... Figure 1-3As shown, the device includes a lower mold 101, a middle plate 102 disposed on the lower mold 101, a middle frame 103 disposed on the middle plate 102 and connected to the lower mold 101, a mold core plate 104 disposed on the middle frame 103, and an upper mold 105 disposed on the mold core plate 104 and passing through the mold core plate 104 and connected to the middle frame 103. The upper mold 105 and the middle frame 103 together form the outer part of the shoe toe cap. The lower mold 101 and the bottom side of the middle plate 102 are combined to form a shoe sole forming cavity for forming the lower part of the shoe. The upper side of the middle plate 102, the middle frame 103, the mold core plate 104 and the upper mold 105 are combined to form a toe cap forming cavity for forming the upper part of the shoe.
[0024] The upper mold 105 has a separate molding structure for forming the inverted toe box of the shoe, while the mold core plate 104 has a molding structure for forming the concave toe box. The molding structure on the upper mold 105, together with the molding structure on the middle frame 103, forms a parting surface, solving the problem of difficult mold opening when an inner buckle is added to the bottom of the toe box. This eliminates the need for modification or secondary molding of the shoe, preserving the design integrity of the product. Since the shoe is a two-tone shoe, during the molding process, the rubber material of the lower part of the shoe is first placed into the sole molding cavity on the lower mold 101, and then the middle plate 102 closes with the lower mold 101. Then, the rubber material of the upper part of the shoe is inserted into the toe box molding cavity on the middle plate 102, and then the middle frame 103, mold core, and upper mold 105 close sequentially. When the mold is heated, the middle plate 102 separates the upper and lower materials of the shoe, preventing them from interfering with each other. In the later stages of mold assembly, to ensure the upper and lower parts of the shoe fit together, the middle plate 102 needs to be removed, and then the lower mold 101 and the middle frame 103 need to be assembled. This ensures that the upper and lower parts of the shoe fit together without color bleeding. During mold opening, the upper mold 105 is opened first to release the inverted wrapping structure on the outer side of the toe box, avoiding difficulties in mold opening due to the inverted wrapping structure. Then, the mold core plate 104 and the middle frame 103 are opened to complete the entire demolding process of the shoe fit.
[0025] In some embodiments, such as Figure 1 As shown, the head-forming cavity includes a first forming part 203 disposed on the lower side of the mold core plate 104, a hollow side forming part 204 disposed on the middle frame 103, a second forming part 205 disposed on the upper side of the middle plate 102, and a head-forming part 206 disposed on the bottom side of the upper mold 105. When the mold is closed, the lower side of the head-forming part 206 passes through the middle frame 103 and connects with the side forming part 204, and the upper side of the head-forming part 206 abuts against the first forming part 203.
[0026] The upper part of the toe-covering forming part 206 abuts against the front end of the first forming part 203, the side forming part 204 forms the side of the shoe, and the lower part of the toe-covering forming part 206 connects to it, facilitating the setting of the parting surface. This ensures that if the lower part of the shoe toe-covering part is further inwardly folded during mold opening, it will not be affected. The three parts work together to form the toe-covering part, facilitating subsequent mold opening. During mold opening, the toe-covering forming part 206 is separated first, allowing the inverted toe-covering structure to be demolded first, so that the subsequent demolding of the structure will not be interfered with by the toe-covering part.
[0027] Furthermore, such as Figure 1 As shown, the bottom of the first forming part 203 is provided with a plurality of protrusions for assembly.
[0028] The bottom surface of the first molding part 203 is the top surface of the outsole shoe. The top surface can be smooth or it can be with protrusions as in this embodiment. The protrusions make the molded top surface have specific grooves, which facilitates the engagement and connection with the bottom of the subsequent components.
[0029] Furthermore, such as Figure 1 As shown, the head forming part 206 has a first inclined surface 106, and the middle frame 103 is provided with a second inclined surface 107 that cooperates with the first inclined surface 106.
[0030] The cooperation of the first inclined surface 106 and the second inclined surface 107 allows the head forming part 206 to be more securely positioned and connected to the middle frame 103, facilitating the connection between the head forming part 206 and the side forming part 204.
[0031] Furthermore, such as Figure 2-3 As shown, the sole molding cavity includes a third molding part 207 disposed on the lower mold 101 and a fourth molding part 208 disposed on the bottom side of the middle plate 102 and cooperating with the third molding part 207. The second molding part 205 matches the fourth molding part 208.
[0032] The rubber material at the bottom of the shoe is placed on the third molding part 207 and formed with the cooperation of the third molding part 207 and the fourth molding part 208. The rubber material at the top of the shoe is placed on the second molding part 205 and formed. Since the second molding part 205 and the fourth molding part 208 match, the top surface of the bottom of the shoe and the bottom surface of the top of the shoe can be assembled together after the middle plate 102 is removed. This setting allows the bottom and top of the shoe to be shaped first, so that the colors will not affect each other. After the two are combined and glued, they will not mix colors.
[0033] In some embodiments, a two-color outsole mold further includes a lower shoe positioning structure 301 disposed on the lower mold 101, the middle plate 102 and the middle frame 103, and an upper shoe positioning structure 302 disposed on the upper mold 105, the mold core plate 104 and the middle frame 103.
[0034] The lower positioning structure 301 of the shoe is suitable for situations where the middle plate 102 is present in the early stage of mold closing and when the middle plate 102 is removed in the later stage of mold closing, without the need for additional positioning operations, thus improving the ease of operation. The upper positioning structure 302 of the shoe facilitates the mold closing and opening of the toe cap structure, thereby improving the accuracy of shoe molding.
[0035] Furthermore, such as Figure 2-3 As shown, the lower positioning structure 301 of the shoe includes a first limiting block 303 disposed on the lower mold 101 and a second limiting block 304 disposed on the bottom side of the middle frame 103. The lower mold 101 has a first limiting groove 305 that matches the second limiting block 304. The bottom side of the middle frame 103 has a second limiting groove 306 that matches the first limiting block 303. The middle plate 102 has a third limiting groove 307 that matches the first limiting block 303 and a fourth limiting groove 308 that matches the second limiting block 304.
[0036] Since the middle plate 102 needs to be removed from the lower mold 101 and the middle frame 103, the first limiting block 303 on the lower mold 101 not only matches and positions itself with the third limiting groove 307 on the lower side of the middle plate 102, but also matches and positions itself with the second limiting groove 306 on the bottom side of the middle frame 103. Similarly, the second limiting block 304 on the lower side of the middle frame 103 not only matches and positions itself with the fourth limiting groove 308 on the middle plate 102, but also matches and positions itself with the first limiting groove 305 on the lower mold 101. The first limiting block 303 and the second limiting block 304 can be protrusion structures such as mold pins and protrusions to facilitate the positioning between the lower mold 101, the middle plate 102 and the middle frame 103. After the middle plate 102 is removed, the middle frame 103 can be directly positioned with the lower mold 101, which is convenient and quick.
[0037] Furthermore, such as Figure 1 As shown, the lower positioning structure 301 of the shoe includes a hinge bushing disposed on the rear side of the lower mold 101, a rotating shaft structure hinged in the hinge bushing, and a hinge plate 311 disposed on the rear side of the middle frame 103 and hinged to the hinge bushing through the rotating shaft structure. The hinge plate 311 is provided with an elongated through hole 312 that matches the rotating shaft structure, and the rotating shaft structure can be adjusted up and down within the elongated through hole 312.
[0038] To improve the overall integrity of the mold, the middle frame 103 and the lower mold 101 are interconnected. In this embodiment, the hinge structure is inserted into the elongated through hole 312 of the hinge plate 311 (not shown in the hinge shaft diagram), realizing the hinge connection between the middle frame 103 and the lower mold 101. The hinge structure can also be provided with a fastening structure on the outside of the elongated through hole 312 to achieve further connection with the middle frame 103. Since the middle plate 102 needs to be removed from the lower mold 101 later, the elongated through hole 312 facilitates the mold closing between the middle frame 103 and the lower mold 101. Before the middle plate 102 is removed, the hinge structure is connected to the lower part of the elongated through hole 312. After the middle plate 102 is removed, the hinge structure is connected to the upper part of the middle plate 102.
[0039] Furthermore, such as Figure 1 As shown, the upper positioning structure 302 of the shoe includes a third limiting block 313 disposed on the bottom side of the upper mold 105 and a fourth limiting block 314 disposed on the bottom side of the mold core plate 104. The upper side of the mold core plate 104 has a fifth limiting groove that matches the third limiting block 313, and the middle frame 103 has a sixth limiting groove 316 that matches the fourth limiting block 314.
[0040] The third limiting block 313 and the fourth limiting block 314 can be protrusion structures such as mold pins and protrusions, which are inserted into the fifth limiting groove and the sixth limiting groove 316 to achieve positioning and improve the forming accuracy of the mold.
[0041] Furthermore, such as Figure 1 As shown, the upper positioning structure 302 of the shoe includes a hinge structure 317 for connecting the middle frame 103, the mold core plate 104 and the upper mold 105.
[0042] To improve the overall integrity of the mold, the middle frame 103, the mold core plate 104, and the upper mold 105 are hinged together by a hinge structure 317. In this embodiment, the hinge structure 317 is a structure in which a hinge bushing is matched with a bearing.
[0043] 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 will 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 in the appended claims and their equivalents.
Claims
1. A two-color molding die for a large sole and toe cap, characterized in that, include: The system comprises a lower mold (101), a middle plate (102) disposed on the lower mold (101), a middle frame (103) disposed on the middle plate (102) and connected to the lower mold (101), a mold core plate (104) disposed on the middle frame (103), and an upper mold (105) disposed on the mold core plate (104) and passing through the mold core plate (104) and connected to the middle frame (103). The upper mold (105) and the middle frame (103) together form the outer part of the shoe toe cap. The lower mold (101) and the bottom side of the middle plate (102) are combined to form a shoe sole forming cavity for forming the lower part of the shoe. The upper side of the middle plate (102), the middle frame (103), the mold core plate (104), and the upper mold (105) are combined to form a toe cap forming cavity for forming the upper part of the shoe.
2. The two-color forming mold for a heel and toe covering according to claim 1, wherein: The head-forming cavity includes a first forming part (203) disposed on the lower side of the mold core plate (104), a hollow side forming part (204) disposed on the middle frame (103), a second forming part (205) disposed on the upper side of the middle plate (102), and a head-forming part (206) disposed on the bottom side of the upper mold (105). When the mold is closed, the lower side of the head-forming part (206) passes through the middle frame (103) and connects with the side forming part (204), and the upper side of the head-forming part (206) abuts against the first forming part (203).
3. The dual-color forming mold for a heel and toe covering according to claim 2, wherein: The bottom of the first forming part (203) is provided with a plurality of protrusions for assembly.
4. The dual-color forming mold for a heel and toe covering according to claim 2, wherein: The head-forming part (206) has a first inclined surface (106), and the middle frame (103) has a second inclined surface (107) that cooperates with the first inclined surface (106).
5. The dual-color forming mold for a heel and toe covering according to claim 2, wherein: The sole forming cavity includes a third forming part (207) disposed on the lower mold (101) and a fourth forming part (208) disposed on the bottom side of the middle plate (102) and cooperating with the third forming part (207), wherein the second forming part (205) matches the fourth forming part (208).
6. The dual-color forming mold for a heel and toe covering according to claim 1, wherein Also includes: The lower positioning structure (301) of the shoe is provided on the lower mold (101), the middle plate (102) and the middle frame (103), and the upper positioning structure (302) of the shoe is provided on the upper mold (105), the mold core plate (104) and the middle frame (103).
7. The dual-color forming mold for a heel and toe covering according to claim 6, wherein: The lower positioning structure (301) of the shoe includes a first limiting block (303) disposed on the lower mold (101) and a second limiting block (304) disposed on the bottom side of the middle frame (103). The lower mold (101) has a first limiting groove (305) that matches the second limiting block (304). The bottom side of the middle frame (103) has a second limiting groove (306) that matches the first limiting block (303). The middle plate (102) has a third limiting groove (307) that matches the first limiting block (303). The middle plate (102) has a fourth limiting groove (308) that matches the second limiting block (304).
8. The dual-color forming mold for a heel and toe covering according to claim 6, wherein: The lower positioning structure (301) of the shoe includes a hinge bushing disposed on the rear side of the lower mold (101), a rotating shaft structure hinged in the hinge bushing, and a hinge plate (311) disposed on the rear side of the middle frame (103) and hinged to the hinge bushing through the rotating shaft structure. The hinge plate (311) is provided with an elongated through hole (312) that matches the rotating shaft structure. The rotating shaft structure can be adjusted up and down within the elongated through hole (312).
9. The dual-color forming mold for a heel and toe covering according to claim 6, wherein: The upper positioning structure (302) of the shoe includes a third limiting block (313) disposed on the bottom side of the upper mold (105) and a fourth limiting block (314) disposed on the bottom side of the mold core plate (104). The upper side of the mold core plate (104) has a fifth limiting groove that matches the third limiting block (313), and the middle frame (103) has a sixth limiting groove (316) that matches the fourth limiting block (314).
10. The dual-color forming mold for a heel and toe covering according to claim 6, wherein: The upper positioning structure (302) of the shoe includes a hinge structure (317) for connecting the middle frame (103), the mold core plate (104) and the upper mold (105).