CN1201925C

CN1201925C - Method for making foam shoe body by integral forming

Info

Publication number: CN1201925C
Application number: CN 01125286
Authority: CN
Inventors: 纪正贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-08-28
Filing date: 2001-08-28
Publication date: 2005-05-18
Anticipated expiration: 2021-08-28
Also published as: CN1401473A

Abstract

The present invention relates to a method for manufacturing a foamed shoe body by integral forming. The method comprises the following steps: a vamp component and a shoe sole unit which is provided with a primary blank of a formed shoe insole are put together into a forming mold; a heat source is input by utilizing circular flow passages arranged in the forming mold so that the temperature of the forming mold can be raised. By the aid of the hot pressing function of the forming mold, a finished product of the shoe body, which is consolidated with the vamp component and the shoe sole unit, can be obtained; meanwhile, by the aid of the mold temperature, the primary blank of the shoe insole is formed so as to be a finished product of the shoe insole which is consolidated with a vamp and a shoe bottom. The present invention can reduce the cost, can increase the nondefective product rate, and can be suitable for finished products of shoe soles in a plurality of color systems.

Description

The manufacture method of foam shoe body by integral forming

[technical field]

The present invention relates to a kind of method for making of footwear, particularly be applicable to the shoes of the sole of simple footwear type, thinner thickness, to be convenient under the normal temperature directly the manufacture method of integrated footwear body when the mould heat pressure.

[background technology]

The sole of simple in the past, simple and easy profile, easier in a kind of polyolefin plastics (EVA) moulding foaming control, but in footwear figure modelling three-dimensional (3D) external form diversified today, it is comparatively difficult that the foaming technology of sole just becomes, therefore, the end and part of the big ends two during the shoemaking industry often is segmented into sole at present, and after separately producing separately, the row chemistry glues together again.

United States Patent (USP) the 4th, 960, No. 374 is the shaped device at a kind of footwear body of request, and can form the footwear panel of closed at vamp and the footwear seam crossing between the big end, it is after vamp is set in last, foamed material is injected in the die cavity of mould with jet forming method again,, and obtained a shoes finished product via HTHP with the end in the footwear of moulding one sole, tool footwear plaque.Only, quite a lot of with the problem that the method for injection method manufacturing sole must be considered, for example, the exhaust structure of mould, inject the pressure size of mould, temperature etc. such as are out of shape at problem when the scarce material that it produced, flash or moulding, all are the difficulty that are difficult to overcome most in the present production technology, cause the product yield to promote, produce consumptive material big, be unsuitable for making the footwear body of footwear type complexity.

United States Patent (USP) the 5th, 560, disclose end method for making in a kind of footwear with embossing lines for No. 877, this method for making is that raw material is pressed into the not EVA film of foaming again behind pound weight, then, the aforementioned not film of foaming inserted be foamed into type embryo just in the one-off pattern, behind the trimming flash, insert again that the heating extrusion forming is a finished product in two apotypes.In this method for making, the end, must suppress through the different mould of twice in the footwear, and the just some of making of footwear body member, still must fit with vamp, the big end of footwear, comparatively bothers on the processing procedure.

United States Patent (USP) the 4th, then disclose a kind of manufacture method of sport footwear 266, No. 314, the sark that this method includes two superimposed and makes with elastic material, pass through bottom and the vamp that mould hot pressing is attached at boots in the playshoes again, the end, the big end of footwear, form in the last footwear of fitting again at last.This method, the hot pressing of mould just merely with the pressing of footwear body member in conjunction with effect, and the middle end be still after being made for finished product state, just go into mould hot pressing.

The Taiwan patent discloses a kind of foamed shoe body structure with embossing lines and stereo profile No. 425271, and be to make with the one pressing mode, it is after germule heating in the end is the condition of high temperature in the footwear that will foam, again with the big end of footwear and a vamp that is sheathed on the shoe tree that is coated with viscose glue, insert one pressing cooling and shaping in the stock mould tool in the lump, utilization is heated end germule in the footwear that are soft state in order to the pressing plastotype of mould and suppress decorative pattern, solve above-mentioned (United States Patent (USP) the 4th, 266, No. 314) footwear in the end need after the twice mold pressing, more separately with vamp, the processing procedure troublesome problem that big primer closes.In the above-mentioned method for making, though end germule is heated outside mould earlier behind the paramount temperature state in the footwear, be easy to handle into mould hot pressing plastotype, but this measure is for the end in the comparatively simple footwear body of some footwear types or the footwear of thinner thickness, make upward, this mode comparatively bothers, uneconomical, on the other hand, end germule shrinkage factor is difficult to control in the footwear after heating, and has caused size to be forbidden shortcoming.

The polychrome that has different colours, material at some is a producing method for soles, as shown in Figure 1, be that most rubber (or EVA) block 101,102,103 of reservation shape, color is spliced in the footwear after the end 1 external form with arrangement mode in the general manufacturing, insert in the mould in the lump with the big end 2 of footwear again, after heating, pressurization, has the sole product that novelty attractive in appearance and multicolour change to obtain one.

Yet as if be used in sole product with above-mentioned method for making (No. the 425271st, Taiwan patent) with polychrome system, material, after rubber or EVA block 101,102,103 are difficult in and are heated to the condition of high temperature, insert hot-forming in the mould (because of contraposition engages inaccurate) again, so aforesaid method for making and be not suitable for sole one and go into mould hot pressing with polychrome system.

[summary of the invention]

The object of the present invention is to provide that a kind of making is simple and easy, product fine rate height, and can be applicable to the manufacture method of the foam shoe body by integral forming of polychrome system.

Manufacture method according to the foam shoe body by integral forming of one aspect of the present invention, be characterized in comprising the following steps: one, prepare a vamp assembly and a sole unit: described vamp assembly has a bottom surface that is closed, described sole unit includes end germule in the foaming footwear at least, and end germule is to be the greenware condition that size is slightly larger than finished product in the described footwear; Two, sheathed location vamp assembly: described vamp assembly is sheathed on the shoe tree, and is coated with viscose glue in the bottom surface of described vamp assembly; Three, normal temperature is gone into mould: under the normal temperature state, described sole unit and the vamp assembly that is sheathed on shoe tree are inserted in a molding tool in the lump, described mould is equipped with at least one circulatory flow in inside along the longitudinal direction of described sole unit; Four, end germule in pressing footwear body and the molding footwear: utilize the thermal source of a heater to import in the circulatory flow of described mould, described mould is heated up, by hot pressing function, impel described vamp assembly and sole unit to be consolidated into one, simultaneously, utilize end germule in the footwear of the described sole unit of mould temperature plastotype, and become end finished size in the footwear; Five, cooling and shaping: treat to stop to heat after the scheduled time, again coolant pump is sent into described circulatory flow, to carry out cooling operations; Six, die sinking deburring: open described mould and rebuild flash, can obtain that described vamp assembly and sole unit are fixed to be the footwear body finished product of one.

The manufacture method of foam shoe body by integral forming according to a further aspect of the invention, be characterized in comprising the following steps: one, prepare a vamp assembly and a sole unit: described vamp assembly bottom is to be open shape, and has the heel drawstring that several are positioned at the bottom, described sole unit includes the end germule and the big end of footwear in the footwear that foamed, end germule is to be the greenware condition that size is slightly larger than finished product in the described footwear, it has several and provides perforation at nearly periphery, and the big end of described footwear has at least two binding sheets that are installed in end face and corresponding described perforation; Two, be coated with viscose glue: on the described footwear end face at the big end, be coated with viscose glue, and its two ends that link sheet placed the perforation of end germule in the described footwear respectively; Three, normal temperature is gone into mould: the big end of end germule and footwear in the described footwear is inserted in the lump carried out pressing in a molding tool, by hot pressing function, impel that end germule and the big end of footwear are consolidated into one in the described footwear, simultaneously by end germule in the described footwear of mould temperature plastotype; Four, link the vamp assembly: open mould, and the heel drawstring and described binding sheet one pair of seams of described vamp assembly are closed, fixed with the end and the big end of footwear in acquisition vamp assembly, the footwear is the sandals formula footwear body finished product of one.

[description of drawings]

The present invention is described in detail below in conjunction with drawings and Examples:

Fig. 1 one illustrates the exploded perspective view that in the past has EVA foamed shoe body member;

Fig. 2 one illustrates the exploded perspective view of first preferred embodiment of the present invention;

Fig. 3 is an assembled sectional view of described preferred embodiment;

Fig. 4 one illustrates the combination section that is embedded with the inflated condition of a buffer element in the sole unit of described preferred embodiment;

Fig. 5 one illustrates the exploded perspective view of second preferred embodiment of the present invention;

Fig. 6 one illustrates and utilizes a panel to bind the decomposing section of going into the state of mould hot pressing after the line bondage in vamp of described preferred embodiment and the footwear between end germule;

Fig. 7 one illustrates the three-dimensional exploded view of the present invention's the 3rd preferred embodiment;

Fig. 8 one illustrates the three-dimensional exploded view of the end germule and the big end of the footwear state before going into mould in the footwear of a sole unit of described preferred embodiment;

Fig. 9 one illustrates the combination section of the pressurized state of described sole unit in mould of described preferred embodiment;

Figure 10 one illustrates described in the described preferred embodiment the curved combination stereogram of scratching state of typing cover;

Figure 11 one illustrates the three-dimensional exploded view of the seam knot state of the described sandals formula vamp of described preferred embodiment and described sole unit;

Figure 12 one illustrates the three-dimensional exploded view that the present invention applies to the hot pressing mode of external form easy footwear body member and mould.

[specific embodiment]

Consult shown in Fig. 2,3, first preferred embodiment of the manufacture method of foam shoe body by integral forming of the present invention includes following step:

One, prepare a vamp assembly and a sole unit: described vamp assembly 10 is to form in conjunction with the above material of a slice with sewing type, it has a top opening 11 that is positioned at apical margin, one outer surface 12 around the outer whole body, and one be positioned at vamp assembly 10 bottoms and be connected the bottom surface 13 of described outer surface 12, described sole unit 20 includes the big end 22 of footwear by end germule 21 and a moulding in advance in the EVA footwear that foamed and is constituted in present embodiment, wherein, end germule 21 is to be the greenware condition that size is slightly larger than finished product in the described footwear, and having 212, two of abutment walls that an end face 211 and extends by the periphery of described end face 211 up matches and defines a room 213 that can hold object.

Two, sheathed location vamp assembly: described vamp assembly 10 is sheathed on the shoe tree 30 by its top opening 11 ends, described shoe tree 30 bottoms also are embedded with a heater 31, in the present embodiment, described heater 31 is made of the heat pipe that ring is located on the shoe last, can be by the in good time generation heat effect of circuit control module (figure does not show), be set in vamp assembly 10 outer surfaces 12 on the described shoe tree 30 simultaneously, also utilize one group of involutory shoe tree clamping 40 clampings location, and when described group of shoe tree clamping 40 closures, can make a part of 12 protruding exposing outside the described shoe tree clamping 40 of vamp assembly 10 outer surfaces.

Three, be coated with viscose glue: at end face 221 of the big ends 22 of described footwear and the vamp assembly 10 protruding outer surface 12 positions coating viscose glues that expose shoe tree clamping 40, in addition, put on the end face 211 of end germule 21 in described footwear a hot melt adhesive film 23 (being to be the film shape under the normal temperature) shop that will have thermal activation.

Four, link end germule in vamp assembly and the footwear: outer surface 12 root edges (being outer surface 12 coating viscose glue places) that the abutment wall 212 of end germule 21 in the described footwear are pasted in advance described vamp assembly 10.

Five, normal temperature is gone into mould: under the normal temperature state, described sole unit 20 and the vamp assembly 10 that is sheathed on shoe tree 30 are inserted in a molding tool 100 in the lump, in present embodiment, described mould 100 includes a bed die seat 50, one group of side form seat 60 that is pivot joint and root edge and described shoe tree clamping 40 profile complementations, one is arranged on the heater (not shown) of mould 100 outer circumferential sides, and in described bed die seat 50 and side form seat 60 inside the longitudinal direction along described sole unit 20 offers a circulatory flow 51 respectively, 61, described circulatory flow 51, the 52nd, constituted by two through holes that are the lateral direction penetrating shape and (or also can adopt and be the runner that wriggle to be provided with, to increase the transmission area of thermal source), just can be on the described bed die seat 50 for the big end 22 of footwear of putting to described sole unit 20.

Six, end germule in pressing footwear body member and the plastotype footwear: after shaping mould tool 100 closures, utilize the thermal source of heater to import described circulatory flow 51, in 61, mould 100 is heated up, borrow its mould temperature to conduct end germule 21 outer rims and abutment wall 212 in the footwear of described sole unit 20, to produce the plastotype effect, make that end germule 21 and cementation of the big ends 22 of footwear are one in the described footwear, simultaneously, the heater 31 of shoe tree 30 bottom surfaces also produces heat energy synchronously, and conduct heat to described hot melt adhesive film 23 by the bottom surface 13 of described vamp assembly 10 indirectly, to activate described hot melt adhesive film 23, impel that end germule 21 bonds mutually in the footwear of described vamp assembly 10 and sole unit 20, like this, by described hot pressing function, can make described vamp assembly 10, sole unit 20 is consolidated into one, simultaneously by end germule 21 in the described footwear of mould temperature plastotype, make it become end finished size in the footwear, and can make that the abutment wall 212 of end germule 21 fits tightly at vamp assembly 10 outer surfaces 12 root edges in the footwear.Above-mentioned mould warm-up time is about 1～7 minute, and heating-up temperature is about 100 ℃～150 ℃ Celsius.

Seven, cooling and shaping: then, heater stop then, is pumped into described circulatory flow 51,61 with cooling fluid (water), to carry out cooling operations again with the circulatory flow 51,61 of thermal source molding mould 100.

Eight, die sinking deburring: open above-mentioned mould 100, and in the trimming footwear end 21 be squeezed through plastotype and be created on the flash of abutment wall 212 apical margins, can obtain that vamp assembly 10, sole unit 20 are fixed to be the footwear body finished product of one, simultaneously, described heater is then imported thermal source once again and carry out the preheating action in the circulation line 51,61 of mould 100, in order to the carrying out of next processing procedure.

In addition, as shown in Figure 4, room 213 bottom surfaces at described sole unit 20 also are concaved with a groove 214, can with one optionally buffer element 24 insert in the groove 214 of end germule 21 in the described footwear, described buffer element 24 can be the gas cell of tension type, and the one side offers an air inlet 241, supplying an inflation unit 70 to stretch establishes into inside, can high temperature hot gas be fed in the described buffer element 24 from extraneous, with end germule 21 in the described footwear of indirect, and utilize the inner tension force that expands and extend out, can produce end germule in the described footwear 21 and support effect, be beneficial to the described sole unit 20 of molding.

In the above-mentioned accompanying drawing, described sole unit 20 is to make with the kenel of end germule 21 in the footwear separately, certainly, visual actual demand, in vamp assembly 10 and footwear end germule 21 moldings fixed after, separately the big end 22 of footwear of moulding in advance, be bonded in separately the bottom surface of sole unit 20 again, to increase wear-resisting effect, or as described in first preferred embodiment, directly the end germule in the footwear 21 and the big end 22 of footwear, made the single sole unit of integral type, and after going into mould hot pressing, be attached in the bottom surface of described footwear top component 10, to make the footwear body structure of a complete formula.

As Fig. 5, shown in 6, it is the present invention's second preferred embodiment, its major technology content is identical with a last embodiment, difference only is, the outer surface 12 ' of described vamp assembly 10 ' by modes such as sewing or bondings in conjunction with a panel 14 ', and impose all holes of waterproof sealing and form, described panel 14 ' is PVC, EVA, PU, plastic cement, the plastic cement skin of leather or leather-like is made, it partly stitches along open ora terminalis and round the bottom surface 13 ' of vamp assembly 10 ' and is provided with number system tie lines 141 ', and before shoe tree 30 ' and bed die seat 50 ' upper and lower displacement cramping, end germule 21 ' can be by the bottom surface 13 ' that line 141 ' is strapped in described vamp assembly 10 ' that binds of described panel 14 ' in the described footwear, heating through mould 100 ', after the pressurization, can be fixed with the big end of footwear 22 ' be one.

The present invention's the 3rd preferred embodiment, as shown in Figure 7, it is the footwear system method that is applicable to the sandals formula, wherein, described vamp assembly 10 " bottom surface is to be open shape; be selected from as elasticity material or fabric and have several; leather; cloth ... wait heel drawstring 15 wherein a kind of or that made up more than any " (or lace ring), be to be consolidated in vamp assembly 10 during manufacturing " on heel drawstring 15 " placed end germule 21 in the footwear " and on perforation 215 ", again with general sewing or tie backguy 151 " the mode stitch at the big end 22 of footwear " on, then, closing molding carries out the interior heating of mould of previous embodiment again, the pressurization processing procedure is to make the footwear body of a sandals formula.

In the above-described embodiments, as Fig. 8, shown in 9, or can be earlier with the two binding sheets 25 that are rectangular straight shape " be located at end face of the big ends 22 of described footwear with sewing or cementation mode; then; will link sheet 25 " two ends placed end germule 21 in the footwear " perforation 215 ", and protrudingly expose end germule 21 in the footwear in it " each sheathed certain jacket 26 of position ", described typing cover 26 " be the curved and high temperature resistant good material of optional apparatus flexible for example; PE; PP; PU etc. make; then; again with end germule 21 in the described footwear " and the big end 22 of footwear " insert described mould 100 in the lump " in, described typing cover 26 " just can set described mould 100 " a locating hole 110 " in; in order to mould 100 " insert and put the location, the cover 26 of then will finalizing the design " pull folding outwardly; as shown in figure 10; make to link sheet 25 " obtain the location, then, utilize two involutory heating plate A again, B (shown in the imaginary line) is with mould 100 ' closure, to carry out aforesaid heating pressurization processing procedure, then, take out the end 21 in the footwear " fixed with of the big ends 22 of footwear be the sole unit 20 of one ", as shown in Figure 7, at last, taking off typing cover 26 "; again with vamp assembly 10 " heel drawstring 15 " with link sheet 25 " two ends sew up one by one, as shown in figure 11, also can obtain vamp assembly 10 "; the end 21 in the footwear " fixed with of the big ends 22 of footwear be the sandals formula footwear body finished product of one.

Conclude above-mentionedly, the manufacture method advantage of foam shoe body by integral forming of the present invention is as follows:

(1), since in the footwear in the foamed shoe body end germule 21 be at normal temperature or only place in the mould under the state of residue temperature and heat, do not have shrinkage factor problem rambunctious, so product fine rate height.

Because the end is under greenware condition in the footwear, go into mould hot pressing and promptly obtain plastotype and fixed at direct and vamp, the big end, non-ly after secondary goes into to be molded as finished product state, be shaped with footwear body constructional glueing respectively again, can save the heat-press step of secondary mould, the processing procedure of simplification, cost-effective advantage are arranged.

(3), for the comparatively simple footwear body of outward appearance, forming technique condition of the present invention is low, the combination of footwear body member is tight, does not have the untight shortcoming of gummed.

(4), must be heated to for the condition of high temperature with respect to the end in the footwear in the past, because sole unit 20 of the present invention does not need the step of heating outside mould, germule 21 contrapositions in the end are easy in the footwear under the normal temperature state, to make things convenient for the pick contraposition and to implement hot-pressing processing, so can be suitable for the tool polychrome system or the footwear body finished product of the sole of thinner thickness.

What deserves to be mentioned is, as shown in figure 12, the present invention also can be used in the footwear system method of simple-type, it is the structure that end germule does not have abutment wall in the footwear, wherein said shoe tree 30 and shoe tree clamping 40 are to be to articulate to link to be provided with, and when shoe tree clamping 40 closures, just can be engaged on the retaining edge that sole unit 20 is protruded out, can reach identical purpose equally.

Claims

1. the manufacture method of a foam shoe body by integral forming is characterized in that:

Described method comprises the following step:

One, prepare a vamp assembly and a sole unit: described vamp assembly has a bottom surface that is closed, and described sole unit includes end germule in the foaming footwear at least, and end germule is to be the greenware condition that size is slightly larger than finished product in the described footwear;

Two, sheathed location vamp assembly: described vamp assembly is sheathed on the shoe tree, and is coated with viscose glue in the bottom surface of described vamp assembly;

Three, normal temperature is gone into mould: under the normal temperature state, described sole unit and the vamp assembly that is sheathed on shoe tree are inserted in a molding tool in the lump, described mould is equipped with at least one circulatory flow in inside along the longitudinal direction of described sole unit;

Four, end germule in pressing footwear body and the molding footwear: utilize the thermal source of a heater to import in the circulatory flow of described mould, described mould is heated up, by hot pressing function, impel described vamp assembly and sole unit to be consolidated into one, simultaneously, utilize end germule in the footwear of the described sole unit of mould temperature plastotype, and become end finished size in the footwear;

Five, cooling and shaping: treat to stop to heat after the scheduled time, again coolant pump is sent into described circulatory flow, to carry out cooling operations;

Six, die sinking deburring: open described mould and rebuild flash, can obtain that described vamp assembly and sole unit are fixed to be the footwear body finished product of one.

2. the method for claim 1 is characterized in that:

End germule also has an abutment wall that is extended by the periphery of an end face up in the footwear of described sole unit, and two are matched and define a room that can hold object.

3. method as claimed in claim 2 is characterized in that:

The room bottom surface of described sole unit also has a groove, described groove is for plugging into a buffer element is arranged, described buffer element one side offers an air inlet, supplying an inflation unit to stretch establishes into inside, can hot gas be fed into described buffer element from extraneous, heating end germule in the described footwear, and can produce the effect that support, to reach reduction man-hour and to increase the three-dimensional distinct embossing lines of footwear body periphery to end germule in the described footwear.

4. the method for claim 1 is characterized in that:

Described sole unit also includes the big end of footwear of a moulding in advance, and the end face at the big end of described footwear is provided with viscose glue, for footwear in end germule one to go into mould hot-forming.

5. the method for claim 1 is characterized in that:

The employed viscose glue in described vamp assembly bottom surface is the hot melt adhesive film that is the film shape under the normal temperature.

6. the method for claim 1 is characterized in that:

After described vamp assembly and sole unit shift out mould, can be the bigger end of footwear of a moulding in advance, be fitted in a bottom surface of described sole unit.

7. the method for claim 1 is characterized in that:

Described shoe tree bottom also is provided with a heater, and when the vamp assembly on being sheathed on shoe tree was inserted described mould, described heater can produce heat effect automatically, and impelling the end face of described sole unit and vamp assembly cementation is one.

8. method as claimed in claim 2 is characterized in that:

Vamp assembly periphery on the described shoe tree is also utilized one group of involutory shoe tree clamping clamping location, described group of shoe tree clamping just is connected mutually with a side form seat of described mould, make described vamp assembly be coated with viscose glue, the abutment wall of the described sole unit that is beneficial to fit at the protruding lateral margin that exposes beyond the shoe tree clamping.