PU sole production mold
By designing a PU sole production mold that includes upper mold, middle mold and lower mold, using positioning nails and nail guards to accurately locate the TPU solid foam block, and inject PU material into the mold, the problem of existing molds being unable to produce sole combinations of PU and TPU solid foaming is achieved, and the comfort and cost balance is achieved.
Patent Information
- Application Number
- CN202421886278.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-05
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-05
AI Technical Summary
The existing sole production molds can only produce soles made of pure PU material, and cannot produce soles that combine PU and TPU solid foam, resulting in comfort and cost issues of the sole.
A PU sole production mold is designed, including an upper mold, a middle mold and a lower mold. Through the coordination of positioning nails and nail guards, the TPU solid foam block is accurately positioned, and PU material is injected into the mold. After heating and foaming, a PU sole is formed with TPU solid foam blocks embedded in it.
It has achieved the production of PU soles with TPU foam block support and cushioning effects, which improves wear comfort and avoids the problem of excessive high-cost TPU materials.
Smart Images
Figure CN222858595U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sole moulds, in particular to a PU sole production mould. Background Art
[0002] Most of the current soles are made of PU or TPU materials. PU soles have good wear resistance, insulation, bending resistance, anti-slip and other properties, but the soles produced by pure PU are harder and heavier, less comfortable, and the production process is slow and the defective rate is high. TPU soles are very light and have good shock-absorbing properties, but the cost of pure TPU soles is relatively high.
[0003] PU soles are generally produced by foaming, that is, the PU material is injected into a mold for foaming. After a period of time, it will be foamed and formed, and the PU sole can be taken out. However, the existing sole production mold can only be used to produce soles made of pure PU material, and cannot produce soles that combine PU and TPU solid foaming. Utility Model Content
[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a PU sole production mold to solve the above problems.
[0005] The technical solution of the utility model is achieved as follows: a PU sole production mold, comprising:
[0006] An upper mold, wherein a punch is protruding from the lower side of the upper mold, and a plurality of positioning pins and guard pins are protruding from the lower side of the punch;
[0007] A middle mold, wherein the middle mold is provided with a through hole for the punch to pass through;
[0008] A lower die, the lower die is fixed on the conveyor belt, and a concave die matching the convex die is provided on the upper side of the lower die;
[0009] The middle mold covers the upper side of the lower mold, the upper mold covers the upper side of the middle mold, and the upper mold, the middle mold and the lower mold are rotatably connected.
[0010] By adopting the above technical scheme, the TPU solid foam block is first inserted into the positioning nail and the surrounding area is limited by the corresponding guard nails, thereby effectively limiting the position of the TPU solid foam block on the upper mold, making its positioning more precise, and then injecting PU material into the concave mold of the lower mold, and then covering the upper mold to close the mold, the TPU solid foam block will be immersed in the PU material. After heating and foaming, the PU foam material will wrap the TPU solid foam block, thereby manufacturing a PU sole with a TPU solid foam block embedded inside.
[0011] The utility model is further configured as follows: at least two positioning pins are provided and are respectively located at the center position of the front sole and the center position of the rear heel of the punch.
[0012] By adopting the above technical solution, the forefoot and heel positions of the produced soles can be supported and cushioned by TPU foam blocks, making the shoes more comfortable to wear.
[0013] The utility model is further configured as follows: a plurality of the guard nails are arranged around the front sole position of the male mold and around the rear heel position, and the guard nails are arranged around the positioning nails.
[0014] By adopting the above technical solution, the protective nail can effectively assist in positioning and limiting the TPU foam block inserted on the positioning nail, so that the position of the TPU foam block on the upper mold is more accurate.
[0015] The utility model is further configured to include:
[0016] A handle is protrudingly arranged on one side of the upper mold and the middle mold.
[0017] By adopting the above technical solution, the handle can make the opening and closing of the upper mold and the middle mold more convenient.
[0018] The utility model is further configured as follows: an air extraction interface communicating with the interior of the concave mold is provided on one side of the lower mold.
[0019] By adopting the above technical solution, the vacuum interface can be connected to the external vacuum mechanism to achieve vacuuming inside the die.
[0020] The utility model is further configured as follows: the length of the positioning nail is smaller than the length of the TPU solid foaming block.
[0021] By adopting the above technical solution, it is possible to effectively avoid the positioning nails from penetrating the TPU solid foaming block. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0023] Figure 1 It is a schematic structural diagram of a specific implementation method of the utility model. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] like Figure 1 As shown, the utility model discloses a PU sole production mold, comprising:
[0026] An upper mold 4, wherein a punch 40 is protruding from the lower side of the upper mold 4, and a plurality of positioning pins 41 and protective pins 42 are protruding from the lower side of the punch 40;
[0027] A middle mold 5, wherein a through hole 50 is formed through the middle mold 5 for the male mold 40 to pass through;
[0028] A lower die 6, the lower die 6 is fixed on the conveyor belt, and a concave die 60 matching the convex die 40 is provided on the upper side of the lower die 6;
[0029] The middle mold 5 covers the upper side of the lower mold 6, the upper mold 4 covers the upper side of the middle mold 5, and the upper mold 4, the middle mold 5 and the lower mold 6 are rotatably connected.
[0030] By adopting the above technical solution, the TPU solid foam block is first inserted into the positioning nail 41 and the surrounding area is limited by the corresponding protective nail 42, thereby effectively limiting the position of the TPU solid foam block on the upper mold 4, making its positioning more precise, and then injecting PU material into the concave mold 60 of the lower mold 6, and then covering the upper mold 4 to close the mold, the TPU solid foam block will be immersed in the PU material, and after heating and foaming, the PU foam material will wrap the TPU solid foam block, thereby manufacturing a PU sole with a TPU solid foam block embedded inside.
[0031] In the embodiment of the utility model, at least two positioning pins 41 are provided and are respectively located at the center of the forefoot and the center of the heel of the punch 40 .
[0032] By adopting the above technical solution, the forefoot and heel positions of the produced soles can be supported and cushioned by TPU foam blocks, making the shoes more comfortable to wear.
[0033] In the embodiment of the utility model, a plurality of the guard nails 42 are arranged around the forefoot position and the heel position of the punch 40 , and the guard nails 42 are arranged around the positioning nails 41 .
[0034] By adopting the above technical solution, the protective nail 42 can effectively assist in positioning and limiting the TPU foam block inserted on the positioning nail 41, so that the position of the TPU foam block on the upper mold 4 is more accurate.
[0035] In the embodiment of the utility model, it also includes:
[0036] A handle 7 is protrudingly provided on one side of the upper mold 4 and the middle mold 5 .
[0037] By adopting the above technical solution, the handle 7 can make the opening and closing of the upper mold 4 and the middle mold 5 more convenient.
[0038] In the embodiment of the utility model, a suction interface 61 communicating with the interior of the concave mold 60 is provided on one side of the lower mold 6 .
[0039] By adopting the above technical solution, the vacuum interface 61 is connected to an external vacuum mechanism to achieve vacuuming inside the die 60 .
[0040] In the embodiment of the utility model, the length of the positioning nail 41 is smaller than the length of the TPU solid foaming block.
[0041] By adopting the above technical solution, it is possible to effectively prevent the positioning nail 41 from penetrating the TPU solid foam block.
[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A PU sole production mold, characterized in that: include, An upper mold (4), wherein a punch (40) is protruding from the lower side of the upper mold (4), and a plurality of positioning pins (41) and protective pins (42) are protruding from the lower side of the punch (40); A middle mold (5), wherein a through hole (50) is formed through the middle mold (5) for the male mold (40) to pass through; A lower die (6), the lower die (6) being fixed on a conveyor belt, and a concave die (60) matching the convex die (40) being provided on the upper side of the lower die (6); The middle mold (5) covers the upper side of the lower mold (6), the upper mold (4) covers the upper side of the middle mold (5), and the upper mold (4), the middle mold (5) and the lower mold (6) are rotatably connected.
2. A PU sole production mold according to claim 1, characterized in that: At least two positioning pins (41) are provided and are respectively located at the center of the forefoot and the center of the heel of the male mold (40).
3. A PU sole production mold according to claim 1, characterized in that: A plurality of the guard nails (42) are arranged around the forefoot position and the heel position of the male mold (40), and the guard nails (42) are arranged around the positioning nails (41).
4. A PU sole production mold according to claim 1, characterized in that: Also includes: A handle (7) is protrudingly arranged on one side of the upper mold (4) and the middle mold (5).
5. A PU sole production mold according to claim 1, characterized in that: A suction interface (61) communicating with the interior of the concave mold (60) is provided on one side of the lower mold (6).
6. A PU sole production mold according to claim 1, characterized in that: The length of the positioning pin (41) is smaller than the length of the TPU solid foaming block.