A kind of moulding process of double-color and double-hardness sole and preparation method
Technical field
The present invention relates to the sole technical field, particularly a kind of moulding process of double-color and double-hardness sole and preparation method.
Background technology
China is maximum footwear production and exported country of the whole world, and oneself becomes a large pillar of China's economic footwear, and along with the development of society, all trades and professions are to the more and more polynary change of the functional requirement of footwear, and particularly the performance requirement to sole is more and more higher.sole generally includes the large end and the middle end, the large end and middle end same color normally traditionally, can not satisfy modern's demand, the forming method of sole, normally first respectively with the large end and in low forming, then be bonded together by adhesive, such technique is more complicated, the large end and the middle end, also need to utilize adhesive both manually to be bonded together after moulding respectively again, in bonding process, the volatilization meeting of adhesive ingredients is to environment, not environmental protection, and shop personnel healthy there is very large injury, injection molding method at the bottom of general present modal polychrome multilayer shoe, it penetrates step and mainly comprises: 1. ejection formation is default monochromatic, the individual layer sole, 2. insert mould, 3. not homochromy individual layer sole ejection formation, 4 die sinkings, can produce the sole product with polychrome multilayer by above-mentioned four steps, the existing sole plastic ejection moulding of this kind method is being sold on the market, is being used for a long time, but the technical task that in fact exists the invention human desires to overcome.
when existing shoe sole production dealer penetrates at the bottom of the polychrome multilayer shoe, must adopt the plastics of different colours to shoot material, reach whereby the outward appearance of global design sense and bright eye, but, due to the internal layer sole, before outer shoe is, rear ejaculation respectively, therefore after the outer shoe material of more late ejaculation is injected, before, after the internal layer sole injected, the outer shoe periphery all can mix the irregular material industry of overflowing and usually be referred to as with [look overflows], not only affect the whole exquisite sense of shoes finished product, and the excessive look of the confusion of various different colours plastic materials reduces the product quality main cause especially, even, polychrome is carried out and repeatedly to be divided the work the obstruction that shoot mode causes the sole issuing velocity to break through especially.
Summary of the invention
In order to overcome above shortcomings part in prior art, the object of the present invention is to provide the moulding process of the double-color and double-hardness sole that a kind of moulding process is simple, production efficiency is high, the double-color and double-hardness sole that utilizes this moulding process to produce, in the large end of footwear and footwear, bear building-up closes firmly, can not produce the look phenomenon of overflowing, chance water does not come unstuck, not delamination, long service life.
In order to reach above-mentioned purpose, the present invention adopts following concrete technical scheme: a kind of moulding process of double-color and double-hardness sole and preparation method is characterized in that comprising the steps:
(1) preparation mould: preparation one cover injection mold comprises upper die and lower die, separate by a dividing plate between upper die and lower die, upper die and lower die are respectively used to the large end of injection moulding and the middle end, be provided with shaping mold cavity in upper die and lower die, the temperature of upper die and lower die is 168-185 ℃, and the temperature of dividing plate is 80-110 ℃;
(2) injection moulding is prepared: the composite with two kinds of different hardness and color stores respectively on two injection moulding hoppers of injection machine in advance, and injection machine has two injection gun barrels, can inject simultaneously the composite of two kinds of different hardness and color to injection mold;
(3) injection mo(u)lding: injection mold is placed on injection machine framed, start injection machine, the injection gun barrel of the composite of two different hardness and color is carried out injection moulding toward the upper die and lower die of injection mold simultaneously, each section temperature of two injector gun barrels is 75-100 ℃, injection temperature is 100-120 ℃, penetrate and automatically to move back seat after the gun barrel injection is completed, two kinds of composite meltings of molten condition are attached in the upper die and lower die die cavity separately, 5-20 is after second for the precompressed of process dividing plate, die sinking, upper die and lower die are separated, detach dividing plate;
(4) bonding, crosslinked foaming moulding: upper die and lower die are carried out matched moulds again, and upper and lower layer composite advances bonding, crosslinked foaming moulding in the matched moulds chamber, and the crosslinked foaming time is 300-500 second, and die sinking can obtain the sole of double-color and double-hardness.
The moulding process of aforementioned a kind of double-color and double-hardness sole and preparation method, the injection moulding composite material by adopting of the large end in wherein said step (1) has the wear-resisting rubber-plastics composite.
The moulding process of aforementioned a kind of double-color and double-hardness sole and preparation method, in the injection moulding in wherein said step (1), end composite material by adopting has the high elasticity soft composite.
Compared with prior art, the present invention has following outstanding advantages and effect:
L, saved the bonding step of artificial hand, technique is simple, and cost of labor is low, has avoided causing the high defective of defective products rate because of artificial firmly uneven;
2, do not need to use chemical adhesive, the volatilization of adhesive ingredients in adhesion process can not occur to the phenomenon of environment, not environmental protection, and can not bring harm to the healthy of shop personnel;
3, the double-color and double-hardness sole that obtains of this molding mode is met water and is difficult for coming unstuck, the phenomenon of the end and large end delamination in can not occurring, and service life is longer;
4, the hardness at the end and the footwear large ends and wearability is different can heat seal be integrated again in the footwear in this double-color and double-hardness sole.
5, its foaming speed is fast, can not produce the look phenomenon of overflowing.
Description of drawings
Fig. 1 is the operational flowchart of a preferred embodiment of the present invention;
The present invention is described in further detail below in conjunction with accompanying drawing.
The specific embodiment
Can further understand basis by the embodiment of the present invention given below bright, but protection of the present invention is not limited to this.
With reference to as shown in Figure 1, a kind of moulding process of double-color and double-hardness sole and preparation method is characterized in that comprising the steps:
(1) preparation mould: preparation one cover injection mold comprises patrix 1 and counterdie 2, separate by a dividing plate 3 between patrix 1 and counterdie 2, patrix 1 and counterdie 2 are respectively used to the large end of injection moulding and the middle end, be provided with shaping mold cavity in patrix 1 and counterdie 2, the temperature of patrix 1 and counterdie 2 is 175 ℃, and the temperature of dividing plate 3 is 90 ℃;
(2) injection moulding is prepared: store at the large rising pouring plastics of the injection moulding bucket of injection gun barrel 4 in advance and have the wear-resisting rubber-plastics composite, rising pouring plastics bucket stores and has the high elasticity soft composite in the injection moulding of injection gun barrel 5 in advance, injection machine has two injection gun barrels (4,5), can inject simultaneously the composite of two kinds of different hardness and color to injection mold;
(3) injection mo(u)lding: injection mold is placed on injection machine framed, start injection machine, the injector gun barrel 4 that composite of the large end is housed is carried out injection moulding simultaneously with the injector gun barrel 5 that composite of the middle end is housed in corresponding patrix 1 and counterdie 2, , two injector gun barrels (4, 5) each section temperature is 85-95 ℃, injection temperature is 115 ℃, penetrate gun barrel (4, 5) can automatically move back seat after injection is completed, the composite of the large end of molten condition and the composite melting of the middle end are attached in patrix 1 and counterdie 2 die cavitys separately, 3 precompressed of process dividing plate are after 10 seconds, die sinking, patrix 1 is separated with counterdie 2, detach dividing plate 3,
(4) bonding, crosslinked foaming moulding: patrix 1 and counterdie 2 are carried out matched moulds again, and upper and lower layer composite carries out bonding, crosslinked foaming moulding in the matched moulds chamber, and the crosslinked foaming time is 400 seconds, and die sinking can obtain the sole of double-color and double-hardness.
The double-color and double-hardness sole that the present invention utilizes this manufacture method to produce, in the large end of footwear and footwear the end meet that water does not come unstuck, not delamination and long service life, and the method is simplified sole manufacturing procedure, the use of avoiding pasting glue, inorganic agent in the underflow journey, safer, environmental protection.
And the different colours composite of double-color and double-hardness sole of the present invention is to inject simultaneously in the mould of upper and lower mould by single, directly foam again and moulding can overcome existing double-color sole [overflow look] shortcoming naturally, allow double-color sole different colours layer present gapless, to keep double-color sole outward appearance uniformity, become simultaneously the combination stability multi-efficiency that can strengthen the different colours interlayer.
Above-mentioned is only a specific embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all should belong to the behavior of invading protection domain of the present invention.
Its novel baffle design of double-color and double-hardness sole foaming manufacturing method of the present invention can overcome in fact the problem that existing double-color sole ejection formation exists, and has novelty, outstanding creativeness and practicality, meets the application for a patent for invention important document, therefore file an application in accordance with the law.