A method for forming a dual density soft and hard combined massage insole

Abstract

The application discloses a forming method of a double-density soft and hard combined massage insole, which comprises the following steps: step one, forming a hard lower layer; part of slurry is applied to a first mold core, a required amount of slurry for forming the hard lower layer is injected into a first mold cavity, then a first upper mold plate is covered on a first lower mold plate, and the forming mold is rotated so that the first upper mold plate is turned to the lower side and the first lower mold plate is turned to the upper side, so that the slurry is fully filled into the recess of the first mold core for forming processing; step two, positioning a cloth layer; a second forming mold is provided, and the cloth layer is fixed on an upper mold assembly of the second forming mold; step three, forming a soft upper layer and the cloth layer; a PU treating agent is brushed on the top surface of the hard lower layer, and then the soft upper layer and the fixed cloth layer are formed in a second lower mold cavity, and finally, the excess forming material and the cloth layer are removed, so that the required product is obtained. The application has strong practicability and strong popularization significance.

Description

TECHNICAL FIELD

[0001] The present application relates to a shoe pad forming method, in particular to a double-density soft and hard combined massage shoe pad forming method. BACKGROUND

[0002] The shoe pad is a basic product in daily life, and the current shoe pad is formed by sewing and molding. Among them, the molded shoe pad is usually formed by EVA, TPR, TPU and other materials through a mold, which not only has high production efficiency, but also has better wearing comfort. Therefore, the use of such molded shoe pad is also more and more widely used.

[0003] However, such a molded shoe pad is integrally formed, and the overall softness and hardness is consistent, which cannot simultaneously have two or more softness and hardness, and is relatively single. At present, some shoe pads also use combined and pasted type, which combines two shoe pad components with different hardness to form a complete shoe pad, that is, the shoe pad includes a hard part and a soft part, and the two are pasted by glue; in order to improve the wearing comfort. However, such pasted shoe pad, due to the wearing environment of the shoe pad, sweat, rainwater and the like are very likely to be encountered, so that after long-term use, the shoe pad will have the problem of glue opening. In addition, the glue pasting is not environmentally friendly, which is not conducive to the beneficial development of human health and environment. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a double-density soft and hard combined massage shoe pad forming method.

[0005] A double-density soft and hard combined massage shoe pad forming method, comprising the following steps:

[0006] Step one, forming a hard lower layer; a first forming mold is provided, the first forming mold comprises a first lower mold, a first upper mold and a grouting device, a first mold cavity is arranged on the top surface of the first lower mold, a first mold core is arranged on the top surface of the first upper mold, a low massage groove area and a high massage groove area are arranged on the first mold core, a stepped groove is arranged on the high massage groove area, a first massage groove is arranged on the bottom surface of the stepped groove and the low massage groove area, and the first massage groove is used for forming massage protrusions;

[0007] When working, part of the slurry is applied to the first mold core, the required amount of slurry for forming the hard lower layer is injected into the first mold cavity, then the first upper mold plate is covered on the first lower mold plate, and the forming mold is rotated so that the first upper mold plate is rotated to the lower side and the first lower mold plate is rotated to the upper side, so that the slurry is fully filled into the grooves of the first mold core; after cooling and forming, the product is taken out and the excess edge material is removed;

[0008] Step two, the positioning of the cushion layer; provide a second forming mold, the second forming mold includes an upper mold assembly and a second lower mold, the upper mold assembly includes a second upper mold and a middle mold, the middle mold is pivoted on the second upper mold and can be opened or closed; the second lower mold is provided with a second lower mold cavity, the second upper mold is provided with a second upper mold core, the middle mold is provided with a hollow cavity in the middle, and the second lower mold cavity, the hollow cavity and the second upper mold core are one-to-one corresponding; the bottom surface of the second upper mold core is provided with a plurality of second limiting grooves, the second limiting grooves are one-to-one corresponding to the massage convex points, and the bottom surface of the second upper mold outside the second upper mold is provided with a plurality of hanging nails; prepare a semi-finished product hanging cloth, the semi-finished product hanging cloth includes a middle effective area and an outside mounting area, wherein the shape of the effective area is consistent with the size and shape of the insole; the mounting area is provided with a hanging hole, the semi-finished product hanging cloth is installed on the bottom surface of the second upper mold, and the hanging hole is arranged on the corresponding hanging nail; then the middle mold plate is rotated and attached to the bottom surface of the second upper mold, and the cushion layer is fixed.

[0009] Step three, forming a soft upper layer and a cushion, placing the formed hard lower layer in the second lower mold cavity, before placing the hard lower layer in the second lower mold cavity, brushing PU treatment agent on the top surface of the hard lower layer, pouring soft paste into the second lower mold cavity, closing the upper mold assembly on the second lower mold, opening and taking out after cooling and forming, and then removing the excess formed material and the cushion layer, so as to obtain the required product.

[0010] Further, it further includes a magnet installation step, when the cushion is fixed, the magnet is adsorbed from the outside of the cushion to the part of the groove on the second upper mold plate.

[0011] Further, the outer side surface of the second lower mold cavity is provided with a second flange, the second flange extends out of the top surface of the second lower mold, and the top surface of the second flange is provided with a second overflow groove.

[0012] Further, the first forming mold and the second forming mold are further provided with a heating device, and the heating device is used for preheating the first upper mold, the first lower mold, the second upper mold and the second lower mold.

[0013] Further, the first upper mold is provided with a plurality of first limiting holes on the outer side surface of the first mold core, and the first lower mold is provided with corresponding first guide columns, and the first guide columns are embedded in the first limiting holes.

[0014] Further, the outer side of the first mold cavity is provided with an annular first flange, and the first flange is provided with a plurality of first overflow grooves for segmenting the first flange.

[0015] Further, a plurality of pattern grooves are arranged on the inner side bottom surface of the first mold cavity, which are used for forming the pattern of the insole bottom surface.

[0016] Further, the first forming die further comprises a pouring device, and a pouring nozzle is arranged on the pouring device, the pouring nozzle being movable to above the mold cavity and pouring material into the mold cavity.

[0017] Further, a second step portion is formed on the bottom surface of the second upper die core and the second upper die plate, and the second step portion is partially embedded in the hollow mold cavity.

[0018] In summary, the forming method of the present application improves the adhesion by brushing the treatment agent on the top surface of the hard lower layer, so that the two materials with different hardness can be better fused, and the soft and hard materials can be well fused, solving the problem of poor fusion of the soft and hard materials. Because of the special structure of the product, the hard massage protrusions in the insole are too high in some areas, resulting in high and large-difference hard particles, which cannot be fully filled with point filling material during filling, and the material cannot be filled into the entire mold during foaming, resulting in incomplete protrusion of the particles. The step portion is designed on the mold to adjust the difference and reduce the height of the massage protrusions, so that the particles are full. In addition, when the material is punched on the mold, an action of wiping the material is added to make the massage particles protrude; to prevent uneven punching, which leads to the problem of incomplete particles of the pressed insole. The hardness difference between the soft upper layer and the hard lower layer of the insole processed by the present application can reach about 50 degrees, and the two materials with different hardness can be well fused. The maximum difference of the traditional insole does not exceed 20 degrees, and if the difference is too large, the fitting area will fall off. The insole prepared by the forming method of the present application is not only stable and not easy to fall off, but also can form inner and outer double-layer massage protrusions, so that the massage protrusions are not too soft or too hard, the soft and hard combination is higher in comfort, and the problem of incomplete filling of the massage protrusions is avoided. The present application has strong practicality and strong popularization significance. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The present application is a double-density soft and hard combined massage insole forming method, and the exploded view of one of the double-density soft and hard combined massage insoles prepared by the forming method is shown, wherein the pad cloth is not shown;

[0020] Figure 2 The present application is a double-density soft and hard combined massage insole forming method, and the exploded view of one of the double-density soft and hard combined massage insoles prepared by the forming method is shown, wherein the pad cloth is not shown; Figure 1 The bottom surface structure of the soft upper layer is shown;

[0021] Figure 3 The cross-sectional structure of the insole at the step portion position is shown;

[0022] Figure 4 The opening structure of the first forming device is shown;

[0023] Figure 5 The opening structure of the second forming device is shown. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings and examples.

[0025] As shown in Figures 1 to 5 The present application provides a forming method of a double-density soft and hard combined massage insole, which is used for processing a double-density soft and hard combined massage insole 100. The double-density soft and hard combined massage insole 100 comprises a hard lower layer 10, a soft upper layer 20 and a cloth layer 30 arranged in sequence from bottom to top. In this embodiment, the hard lower layer 10, the soft upper layer 20 and the cloth layer 30 are integrally formed, and there is no need to use glue to stick or sew to fix.

[0026] The outer side edge of the top surface of the hard lower layer 10 is slightly higher than the middle region, so that a recessed surface is formed in the middle. A low massage bump area 11 and a high massage bump area 12 are arranged on the top surface of the recessed surface. A plurality of massage bumps 13 are arranged on the low massage bump area 11 and the high massage bump area 12. The top end of the high massage bump area 12 is higher than that of the low massage bump area 11. Specifically, the bottom of the high massage bump area 12 is substantially flush with the low massage bump area 11, but the top end of the massage bump 13 on the high massage bump area 12 is higher than that of the low massage bump area 11. The bottom of the high massage bump area 12 is provided with a stepped portion 14, and the massage bump 13 is arranged on the stepped portion 14.

[0027] In this embodiment, the high massage bump area 12 is arranged in a specific area where massage needs to be strengthened. The massage bumps 13 in this area are higher than those in the surrounding area. When the massage bumps 13 are too high, there will be problems such as lack of material, depression and insufficient height of the massage bumps 13 during forming, because the holes for forming the massage bumps are small. The design of the stepped portion 14 can reduce the height of the massage bumps 13, so that the height of the massage bumps 13 is within a height value that is convenient for forming, so that full massage bumps 13 are formed. In addition, the top surface of the hard lower layer 10 is provided with a "human" shaped protruding strip 15 at the position of the metatarsal head and a protruding block 16 at the position of the Yongquan acupoint.

[0028] A plurality of limiting blind holes 21, "human" shaped recesses 22 and a middle limiting groove 23 are arranged on the bottom surface of the soft upper layer 20. The limiting blind holes 21 correspond to the massage bumps 13 on the hard lower layer 10, the "human" shaped recesses 22 correspond to the "human" shaped protruding strip 15, and the middle limiting groove 23 corresponds to the protruding block 16. The top surface of the soft upper layer 20 is formed with an upward protruding structure at positions corresponding to the limiting blind holes 21, the "human" shaped recesses 22 and the middle limiting groove 23.

[0029] The forming method of the double-density soft and hard combined massage insole specifically comprises the following forming steps:

[0030] Step one, forming the hard lower layer 10; provide a first forming mold 40, which includes a first lower mold 41 and a first upper mold 42, the first upper mold 42 and the first lower mold 41 are arranged oppositely. The first lower mold 41 is provided with a first mold cavity 411 on the top surface, and the first upper mold 42 is provided with a first mold core 421 on the top surface. An annular first flange 412 is arranged outside the first mold cavity 411, and a plurality of first overflow grooves 413 are arranged on the first flange 412 to segment the first flange 412. A plurality of pattern grooves (not shown in the figure) are arranged on the inner side bottom surface of the first mold cavity 411 for forming the pattern of the insole bottom surface. The first mold cavity 411 can be more than one, which is not limited here. In addition, the first lower mold 41 is also provided with a first guide column 414 on the top surface, which is arranged in a small size upwards and a large size downwards, so as to facilitate the introduction of the limit. An annular first limit step surface 415 is also arranged between the first flange 412 and the top end of the side wall of the first mold cavity 411, which is designed to facilitate the removal of excess material.

[0031] A plurality of first massage grooves 422, step grooves 423 and "person" grooves 424 are arranged on the first mold core 421. The top surface of the step groove 423 is also provided with a first massage groove 422. The "person" groove 424 can form the "person" convex strip 15 on the hard lower surface, the step groove 423 can form the step part 14, and the first massage groove 422 can form the required massage convex point 13. A plurality of first limit holes 425 are arranged on the outer side surface of the first upper mold 42 plate of the first mold core 421, which are arranged one by one with the first guide column 414. When installed, the first guide column 414 is embedded in the first limit hole 425. One end of the first upper mold 42 is pivoted to the corresponding end surface of the first lower mold 41, so that the two can be closed or opened by driving device.

[0032] The first forming mold 40 also includes a material injection device (not shown in the figure), which is provided with a grouting nozzle. The grouting nozzle moves above the mold cavity and pours material into the mold cavity to facilitate forming.

[0033] In operation, the first upper die plate 42 and the first lower die plate 41 are preheated to avoid the glue from being cooled too fast in the cold die plate. Specifically, the first upper die plate 42 and the first lower die plate 41 are provided with heating devices for preheating. The first upper die plate 42 is opened and the first lower die plate 41 is opened. The grouting nozzle is moved above the die cavity and pours a proper amount of high-density slurry for forming the hard lower layer into the die cavity. The slurry is applied on the first die core 421, and the slurry is partially filled into the groove on the first die core 421. Then, the first upper die plate 42 is closed on the first lower die plate 41, and the forming die is rotated so that the first upper die plate 42 is below and the first lower die plate 41 is above. In this way, the slurry is fully filled into the groove of the first die core 421, so that the massage convex 13 is more full. After a certain time of cooling and forming, the first forming die 40 is opened, and the product is taken out. Then, the excess material around the product is removed, and the hard lower layer product is obtained.

[0034] Step two, the cloth layer 30 is positioned. A second forming die 50 is provided, which includes an upper die assembly and a second lower die 51. The upper die assembly includes a second upper die 52 and a middle die 53, which is pivotally connected to the second upper die 52 and can be opened or closed. The second lower die 51 is provided with a second lower die cavity 511, the second upper die 52 is provided with a second upper die core 521, and the middle die 53 is provided with a hollow die cavity 531 in the middle. The second lower die cavity 511, the hollow die cavity, and the second upper die core 521 are one-to-one corresponding. The outer side of the second lower die cavity 511 is provided with a second flange 512, which extends out of the top surface of the second lower die 51. The second flange 512 is provided with a second overflow groove 514 on the top surface.

[0035] The bottom surface of the second upper die core 521 is provided with a plurality of second limiting grooves 522, which are one-to-one corresponding to the massage convex 13. In addition, the bottom surface of the second upper die core 521 and the second upper die 52 are formed with a second step part 523, which is partially embedded in the hollow die cavity.

[0036] The second upper die 521 is provided with a plurality of pegs 524 on the bottom surface of the second upper die 52, which are used to hang the semi-finished product. The semi-finished product includes a middle effective area and an outer mounting area, wherein the shape of the effective area is consistent with the size of the insole. The mounting area is provided with a hanging hole, and the semi-finished product is mounted on the bottom surface of the second upper die 52. The hanging hole is arranged on the corresponding peg 524. Then, the middle die 53 is rotated and attached to the bottom surface of the second upper die 52, and the pad cloth layer 30 is fixed. Then, the massage magnet is adsorbed on the part of the groove on the second upper die 52 from the outside of the pad cloth, so as to form the required magnetic massage convex point. The second forming die 50 also includes an injection device, and the injection device is provided with an injection nozzle. The injection nozzle is moved above the mold cavity and pours the material into the mold cavity, so as to facilitate the forming.

[0037] Step three, forming the soft upper layer 20 and the pad cloth 30. The formed hard lower layer 10 is placed in the second lower die cavity 511. Before the hard lower layer 10 is placed in the second lower die cavity 511, PU treatment agent is brushed on the top surface of the hard lower layer 10, so as to reduce the smoothness of the surface of the hard lower layer, enhance the adhesion, and better fuse the soft material and the hard material. The injection nozzle is moved above the second lower die cavity 511 and pours the soft material into the second lower die cavity 511. The upper die assembly is closed on the second lower die 51. After cooling and forming, the product is taken out. The excess formed material and the pad cloth layer 30 are removed, and the required product is obtained.

[0038] In summary, the forming method of the present application brushes the treatment agent on the top surface of the hard lower layer, so as to improve the adhesion and better fuse the materials with different hardness. The soft and hard materials can be well fused, and the problem of poor fusion of the soft and hard materials is solved. Because of the special structure of the product, the hard massage convex points in the middle part of the insole are too high, the hard particles are too high and have large differences, and the point filling material cannot be full when the material is filled. The particles cannot be filled to the whole mold when the material is foamed, which leads to incomplete particles. The step part is designed on the mold, the difference is adjusted, and the height of the massage convex point is reduced. The particles are full. In addition, when the material is poured on the mold, a wiping action is added, which makes the massage particles protrude. The problem of uneven pouring of the material leads to the problem of incomplete particles of the insole. The hardness difference between the soft upper layer and the hard lower layer of the insole processed by the present application can reach about 50 degrees, and the materials with different hardness can be well fused. The maximum difference of the traditional insole is not more than 20 degrees, and if the difference is too large, the fitting area will fall off. The insole prepared by the forming method of the present application is not only stable and not easy to fall off, but also can form double-layer massage convex points, so that the massage convex points are not too soft or too hard, the soft and hard combination is better, and the comfort is higher. The problem of incomplete filling of the massage convex points is avoided. The present application has strong practicality and strong popularization significance.

[0039] The above-described embodiments only express one implementation of the present application, which is described in more detail and in more detail, but it should not be understood as limiting the scope of the patent of the present application. It should be noted that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application, therefore, the scope of protection of the patent of the present application should be subject to the appended claims.

Claims

1. A method of forming a dual density soft and firm combination massaging insole, characterized by: It comprises the following steps: Step one, forming a hard lower layer; provide a first forming mold, the first forming mold comprises a first lower mold, a first upper mold and a material injection device, the top surface of the first lower mold is provided with a first mold cavity, the top surface of the first upper mold is provided with a first mold core, the first mold core is provided with a low massage groove area and a high massage groove area, the high massage groove area is provided with a stepped groove, the bottom surface of the stepped groove and the low massage groove area are provided with a first massage groove, the first massage groove is used for forming a massage convex point; a plurality of first limiting holes are arranged on the outer side surface of the first mold core of the first upper mold, and a corresponding first guide column is arranged on the first lower mold, the first guide column is embedded in the first limiting hole; an annular first flange is arranged outside the first mold cavity, and a plurality of first overflow grooves are arranged on the first flange to segment the first flange; During operation, part of the slurry is applied to the first mold core, then the first mold cavity is injected with a required amount of slurry for forming a hard lower layer, then the first upper mold is covered on the first lower mold, and the forming mold is rotated so that the first upper mold is turned to the lower side and the first lower mold is turned to the upper side, so that the slurry is fully filled into the grooves of the first mold core; after cooling and forming, the product is taken out, and the excess material is removed; Step two, pad layer positioning; provide a second forming mold, the second forming mold comprises an upper mold assembly and a second lower mold, the upper mold assembly comprises a second upper mold and a middle mold, the middle mold is pivotally connected to the second upper mold and can be opened or covered; the second lower mold is provided with a second lower mold cavity, the second upper mold is provided with a second upper mold core, the middle mold is provided with a hollow mold cavity in the middle, and the second lower mold cavity, the hollow mold cavity and the second upper mold core are arranged one by one; a second stepped portion is formed between the bottom surface of the second upper mold core and the second upper mold, and the second stepped portion is partially embedded in the hollow mold cavity; a plurality of second limiting grooves are arranged on the bottom surface of the second upper mold core, and the second limiting grooves are arranged one by one corresponding to the massage convex points; a plurality of hooks are arranged on the bottom surface of the second upper mold outside the second upper mold; prepare a semi-finished product hanging cloth, the semi-finished product hanging cloth comprises a middle effective area and an installation area outside, wherein the shape of the effective area is consistent with the size and shape of the insole; a hook hole is arranged on the installation area, the semi-finished product hanging cloth is installed on the bottom surface of the second upper mold, and the hook hole is arranged on the corresponding hook; then the middle mold is rotated and attached to the bottom surface of the second upper mold to fix the pad layer; Step three, forming a soft upper layer and a pad cloth, first brush PU treatment agent on the top surface of the formed hard lower layer, then place it in the second lower mold cavity, pour soft slurry into the second lower mold cavity, cover the upper mold assembly on the second lower mold, open and take out after cooling and forming, and then remove the excess forming material and pad layer to obtain the required product.

2. The method of claim 1, wherein the method is characterized by: It also comprises a magnet installation step, after the pad cloth is fixed, the magnet is adsorbed from the outside of the pad cloth into the groove on the second upper mold.

3. The method of claim 1, wherein the method is characterized by: The outer surface of the second lower mold cavity is provided with a second flange, the second flange extends out of the top surface of the second lower mold, and the top surface of the second flange is provided with a second overflow groove.

4. The method of claim 1, wherein the method is characterized by: The first forming die and the second forming die are further provided with heating devices for preheating the first upper die, the first lower die, the second upper die and the second lower die.

5. The molding method of a dual-density soft-hard combination massage insole as described in claim 1, characterized in that: The inner bottom surface of the first die cavity is provided with a plurality of pattern grooves for forming the pattern of the insole bottom surface.

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