CN113384035B - Composite sole and printing and post-processing method - Google Patents
Composite sole and printing and post-processing method Download PDFInfo
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- CN113384035B CN113384035B CN202010170590.8A CN202010170590A CN113384035B CN 113384035 B CN113384035 B CN 113384035B CN 202010170590 A CN202010170590 A CN 202010170590A CN 113384035 B CN113384035 B CN 113384035B
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/42—Filling materials located between the insole and outer sole; Stiffening materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/35—Cleaning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/379—Handling of additively manufactured objects, e.g. using robots
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/50—Footwear, e.g. shoes or parts thereof
- B29L2031/504—Soles
Abstract
The invention discloses a composite sole and a printing and post-processing method, comprising a midsole and an outsole, wherein the midsole is provided with an upper surface, a lower surface and a side surface, the upper surface and the lower surface are connected through the side surface, one part of the outsole covers the lower surface of the midsole, the other part of the outsole is completely or partially covered on the side surface of the midsole after being bent, the midsole and/or the outsole are/is made of a photo-curable resin material by a photo-curing 3D printing method to prepare a printing intermediate, the printing intermediate contains uncured components, the midsole and the outsole are bonded with each other through post-curing reaction of the uncured components in the printing intermediate, compared with the traditional photo-curing 3D sole printing and processing operation flow, the technical scheme is not added with complicated operation steps, so the method is simple to operate and is suitable for large-scale mass production, in addition, the method does not need to use additional adhesive glue, thereby saving the cost and being more environment-friendly.
Description
Technical Field
The invention relates to the technical field of three-dimensional forming, in particular to a composite sole and a printing and post-processing method.
Background
The stereolithography apparatus (SLA or SL) mainly uses a printing material as a raw material, and utilizes the characteristic that a liquid printing material is rapidly solidified under the irradiation of a laser beam with a specific wavelength and intensity. The printing raw material is generally liquid, the light source generally selects ultraviolet light, and the printing raw material generally causes polymerization reaction under the irradiation of ultraviolet light (250 nm-400 nm) with specific wavelength to finish curing.
Specifically, the photocuring 3D printing method comprises the following steps: the three-dimensional model is layered in one direction to obtain the outline information or image information of each layer, the data information of each layer is realized through a light source, a light pattern is irradiated on printing raw materials, after the printing raw materials in the raw materials are irradiated by light, polymerization reaction (photocuring) occurs, polymerized molecular chains can fix other materials to form a cured layer together, after the light pattern curing of the layer is completed, the next layer of curing is performed, iteration is repeated, and finally a complete printing piece (three-dimensional model) is formed.
The photocuring 3D printing can be widely applied to various fields according to the difference of printing materials used. The application of the DLP technology in photocuring 3D printing at present improves the printing precision. The hollowed-out lattice structure printed by the elastic photosensitive resin has better mechanical performance, is applied to soles (particularly sports shoes), not only brings good wearing experience to users, but also removes a high-consumption mold opening stage in production, so that the 3D printing shoes have good market prospect.
At present, 3D printing shoes on the market are mainly formed by printing a middle sole part by photocuring and splicing a vamp and an outsole on two sides respectively. The midsole is generally of a lattice structure made of elastic resin, so that the side of the midsole is hollowed out. However, the hollowed-out midsole side surface may limit the design of the entire sole in terms of appearance design.
Disclosure of Invention
The invention aims to solve the technical problem of providing a composite sole which is simple in structure, environment-friendly and capable of combining excellent performance and appearance design flexibility, and a corresponding printing and post-processing method which is convenient and fast in operation process.
A composite sole comprises a midsole and an outsole, wherein the midsole is provided with an upper surface, a lower surface and a side surface, the upper surface and the lower surface are connected through the side surface, one part of the outsole covers the lower surface of the midsole, the other part of the outsole covers the side surface of the midsole completely or partially after being bent, the midsole and/or the outsole are made of a photo-curable resin material and are prepared into a printing intermediate through a photo-curing 3D printing method, the printing intermediate contains uncured components, and the midsole and the outsole are bonded through post-curing reaction of the uncured components in the printing intermediate.
Compared with the prior art, the technical scheme has the following advantages: utilize the characteristics that the printing intermediate body surface that contains uncured component has viscidity, print the completion back at the photocuring, will have the shoes insole and the big end laminating of shoes of uncured component, the postcure makes the uncured component further solidification in the printing intermediate body, makes the firm bonding of the binding face of shoes insole and big end, and material mechanical properties promotes. Adopt this kind of mode combination shoes outsole and shoes insole, do not increase complicated operation step for the operation flow of traditional photocuring 3D sole printing and processing, so the method easy operation is applicable to large-scale volume production, and the method need not reuse extra glue in addition and bonds shoes outsole and shoes insole, not only saves the cost but also more environmental protection. Meanwhile, the composite sole can be more flexible in appearance design through the change of design.
Further, the center of the outsole completely covers the lower surface of the midsole, and the edge of the outsole is bent to cover the side of the midsole.
Further, the shoe outsole is of an integrated structure.
Furthermore, the shoe insole is provided with a hollow structure.
Further, the outsole comprises outsole fragments of various shapes.
Further, the shoe outsole comprises a sheet-shaped slicing piece and a strip-shaped slicing piece, the sheet-shaped slicing piece covers the lower surface of the shoe insole, and the strip-shaped slicing piece covers the side surface of the shoe insole.
Further, the midsole and the outsole are made of a photo-curable resin material by first preparing a printing intermediate containing uncured components through a photo-curing 3D printing method, and are bonded to each other by post-curing reaction of the uncured components in the printing intermediate.
Further, the midsole is made of a light-curable resin material, a printing intermediate containing uncured components is first prepared by a light-curing 3D printing method, and the midsole and the outsole are bonded to each other by post-curing reaction of the uncured components in the midsole printing intermediate.
Further, the outsole is made of a photo-curable resin material by first preparing a printing intermediate containing uncured components through a photo-curing 3D printing method, and the midsole and the outsole are bonded to each other by performing a post-curing reaction on the uncured components in the outsole printing intermediate.
In addition, for the printing and post-processing method of the composite shoe sole, the method comprises the following steps:
step a, designing three-dimensional structures of the matched insole and the shoe outsole to enable one part of the shoe outsole to cover the lower surface of the insole,
the other part of the shoe sole covers the side surface of the insole after being bent completely or partially, and the three-dimensional structures of the insole and the outsole are respectively
Slicing to obtain light pattern data for photocuring 3D printing, and configuring photocurable resin required by photocuring 3D printing;
b, adding light-curable resin into the photocuring 3D printing equipment, and introducing the light pattern data into the photocuring 3D printing equipment
In preparation, the printing midbody of the insole and/or the printing midbody of the outsole are respectively printed by a photocuring 3D printing device
The printing intermediate contains uncured components;
optionally, performing a cleaning process on the printing intermediate in the step b, wherein the cleaning process is to remove the printing intermediate
An uncured photocurable resin on the surface of the body;
d, matching the printing intermediate body of the middle sole and/or the printing intermediate body of the large sole to enable the large sole to cover the middle sole of the shoe respectively
The lower surface and the side surface of all or part of the sole maintain the matching state of the insole and the outsole to carry out post-fixing on the printing intermediate body
Curing, wherein uncured components are cured in the post-curing process;
step e, the contact surfaces between the middle sole printing intermediate body and/or the large sole printing intermediate body are mutually bonded through post-curing,
forming the composite shoe sole.
Further, step b is respectively printing an intermediate printing shoe outsole and an intermediate printing shoe midsole, wherein the intermediate printing comprises uncured components; and in the steps d and e, matching the middle sole printing intermediate body with the shoe large sole printing intermediate body, and adhering the contact surfaces between the middle sole printing intermediate body and the shoe large sole printing intermediate body to each other through post-curing.
Further, step b, respectively printing a mid-sole printing intermediate body and an outsole, wherein the printing intermediate body contains uncured components; and d, matching the middle sole printing intermediate body with the shoe outsole in the steps e, and bonding the contact surfaces between the middle sole printing intermediate body and the shoe outsole through post-curing.
Further, step b is respectively printing a middle sole printing intermediate body and an upper sole printing intermediate body, wherein the printing intermediate bodies contain uncured components; and d, matching the printing intermediate bodies of the shoe insole and the shoe outsole in the steps e, and bonding the contact surfaces of the printing intermediate bodies of the shoe insole and the shoe outsole with each other through post-curing.
Further, in the step d, the shoe outsole and the shoe midsole keep a matched state in post-curing through the sizing piece.
Furthermore, the fixed shaping piece is a mold provided with a groove, and in the step d, the shoe outsole and the shoe midsole are embedded in the groove after being wrapped.
Further, the post-curing in step d includes one or more operations of heating, radiation, humidification, and the like.
Further, the post-curing in the step d is heating treatment, the heating time is 6-12 hours, and the heating temperature is 80-160 ℃.
Further, when the printing intermediates of the midsole and the outsole are coupled in the step d, a light-curable resin is coated on a coupling contact surface of the midsole and the outsole.
Further, the cleaning process in step c includes removing the uncured photocurable resin from the surface of the printing intermediate by using a centrifuge or a spin dryer.
Drawings
FIG. 1 is a schematic view of a layered structure of a midsole and an outsole of a shoe according to the present invention;
FIG. 2 is a schematic view of the structure of the composite sole of the present invention;
FIG. 3 is a flow chart of a composite shoe sole printing and post-processing method of the present invention;
10. a composite sole; 11. a midsole; 12. the shoe outsole.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
It will be understood that when an element is referred to as being "on," "attached to," "connected to," combined with, "contacting" another element, etc., it can be directly on, attached to, connected to, combined with, and/or contacting the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on," "directly attached to," directly connected to, "directly engaged with" or "directly contacting" another element, there are no intervening elements present. One skilled in the art will also appreciate that a structure or member that is referred to as being disposed "adjacent" another member may have portions that overlie or underlie the adjacent member.
Spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe an element or component's relationship to another element or component as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Similarly, the terms "upward," "downward," "vertical," "horizontal," and the like are used herein for illustrative purposes only, unless explicitly indicated otherwise.
The common composite sole mainly comprises a middle sole and an upper sole, wherein the upper sole refers to an outer sole, namely the outermost layer which is directly contacted with the ground, the middle sole refers to a structural layer between the upper sole and a vamp, and a structural layer such as an inner sole, a shoe pad and the like can be arranged between the middle sole and the vamp. In general, the midsole is the key structural layer that determines the overall performance of the sole.
The composite sole 10 disclosed by the invention comprises a midsole 11 and an outsole 12, as shown in fig. 2 and 3, wherein the midsole 11 has an upper surface, a lower surface and a side surface, the upper surface and the lower surface are connected through the side surface, before the outsole 12 is attached to the midsole 11, the outsole 12 is of a bendable sheet structure, when the outsole 12 is attached, one part of the outsole 12 covers the lower surface of the midsole 11, and the other part of the outsole 12 covers the side surface of the midsole 11 completely or partially after being bent. Since the midsole 11 and/or outsole 12 are made of a light-curable resin material by first preparing a printing intermediate containing uncured components through a photo-curing 3D printing method, the midsole 11 and outsole 12 are bonded to each other through a post-curing reaction of the uncured components in the printing intermediate.
The photocurable resin is:
it is further noted that the materials used in the composite shoe sole 10 disclosed herein include two broad classes of light curable resins, one class of conventional light curable resins and one class of dual curable resins. The traditional photocurable resin mainly comprises a photocurable resin monomer or oligomer and a photoinitiator. The dual-cure resin includes, in addition to the photocurable resin monomer or oligomer and the photoinitiator, components that remain uncured after the photocuring step, and the uncured components can be further cured in a post-curing step following the photocuring step.
Specifically, the photocurable resin monomer and/or oligomer may be an acrylate material containing a carbon-carbon double bond, the monomer may be an acrylate, and the oligomer may be urethane methacrylate and/or urethane acrylate, wherein the photoinitiator may be one of benzoin, diphenylethanone (acetophenone), benzophenone, aroylphosphine oxide (such as 2,4, 6-trimethylbenzoyl-diphenylphosphine oxide or referred to as TPO), thiopropoxy thioxanthone, or a mixture of a plurality of these.
In particular, the uncured component may be a mixture of one or more of cyanate ester, isocyanate, TPU (thermoplastic polyurethane elastomer rubber), epoxy, silicone.
In the step b, the photocurable resin monomer or oligomer in the photocurable resin is irradiated by light and is subjected to polymerization reaction under the catalysis of the photoinitiator, the liquid resin is cured to form a printing piece or a printing intermediate (cured and formed by the photocurable resin and containing uncured components), and the surface of the printing piece or the printing intermediate has certain viscosity due to the fact that the uncured resin exists on the surface of the printing piece or the printing intermediate to a greater or lesser extent. Particularly, the printing intermediate formed after the photocuring 3D printing is carried out by using the dual-curing resin contains uncured components, the uncured components not only enable the surface of the printing intermediate to have viscosity, but also enable the printing intermediate to be integrally soft, secondary plasticity is facilitated, the fit between the insole 11 and the outsole 12 containing the uncured components is facilitated, and then the uncured components of the printing intermediate are cured under specific post-curing conditions. In the curing process, the uncured component and the self and/or the photo-curable resin monomer or oligomer can form a polymer blend, an interpenetrating polymer network, a semi-interpenetrating polymer network or a sequential interpenetrating polymer network, so that the binding surfaces are tightly connected, and the mutual bonding of the contact surfaces of the insole 11 and the outsole 12 is completed. Methods of photocuring 3D printing using specifically dual-cure resins are applicable to the printing of composite soles 10 in this patent as disclosed in chinese patent application CN106796392A (publication) a method of preparing polyurethane three-dimensional objects from materials having multiple curing mechanisms and CN106687861A (publication) a method of preparing three-dimensional objects from materials having multiple curing mechanisms, which are incorporated herein by reference.
In summary, the midsole 11 and the outsole 12 are bonded by printing uncured components of the intermediate and curing the uncured components, wherein the printing intermediate may be one of the printing intermediate of the midsole 11 and the printing intermediate of the outsole 12, or both of them, and the other may be formed by directly printing a common photocurable resin through a photocuring printing step without a post-curing step. Then in actual operation there are three cases: firstly, the light-curable resin used for printing the midsole 11 and the outsole 12 is still uncured after the light curing step is finished (the materials of the midsole 11 and the outsole 12 are dual-cured resin); secondly, the light-curable resin only used for printing the midsole 11 still contains uncured components after the light curing step is finished (the material of the midsole 11 is dual-cured resin, and the material of the outsole 12 is traditional light-cured resin); thirdly, only the light-curable resin of outsole 12 still contains uncured components after the light-curing step is completed (the material of midsole 11 is a conventional light-curable resin, and the material of outsole 12 is a dual-curable resin).
In some embodiments, both the midsole 11 and the outsole 12 are made of dual-curing resin materials, and a printing intermediate is first prepared by a photo-curing 3D printing method, and both printing intermediates contain uncured components, which make the printing intermediate overall softer and more tacky on the surface. Keep the big end of shoes 12 laminating insole 11's state to carry out the postcure, the postcure reaction bonds each other through printing uncured composition in the midbody in the postcure in-process insole 11 and the big end of shoes 12 for big end of shoes 12 closely laminates with insole 11.
In some embodiments, midsole 11 is made of dual-curing resin material by first preparing a printing intermediate through a photo-curing 3D printing method, and outsole 12 is made of a conventional photo-curable resin by photo-curing 3D printing method, wherein each printing intermediate of midsole 11 contains uncured components, and the uncured components make the printing intermediate soft as a whole and have high surface viscosity. Keep the big end of shoes 12 laminating insole 11's state to carry out the postcure, the postcure reaction bonds each other through printing uncured composition in the midbody in the postcure in-process insole 11 and the big end of shoes 12 for big end of shoes 12 closely laminates with insole 11.
In some embodiments, outsole 12 is made of dual-cure resin material by first photo-curing a 3D printing process to prepare a printing intermediate, and midsole 11 is made of a conventional photo-curable resin by photo-curing a 3D printing process to prepare a printing intermediate, wherein each printing intermediate of outsole 12 contains uncured components that make the printing intermediate overall softer and more tacky on the surface. Keep the big end of shoes 12 laminating insole 11's state to carry out the postcure, carry out postcure reaction through printing uncured composition in the midbody and bond each other in aftertreatment in-process insole 11 and the big end of shoes 12 for big end of shoes 12 closely laminates with insole 11.
With respect to the structure of midsole 11:
it should be further noted that, in some embodiments, the light-cured 3D-printed midsole 11 is a hollow structure, and the hollow structure includes a plurality of interconnected units, each unit being a geometric body defined by a plurality of connecting columns and a plurality of vertices. Adjacent cells are interconnected by sharing some of the same connecting posts and vertices. In some embodiments, the units of the main body hollow structure are geometric bodies with the same shape and volume, wherein the geometric bodies can be regular geometric bodies or irregular geometric bodies; in other embodiments, the units of the main body hollow structure may be geometric bodies with different shapes and/or volumes, wherein the geometric bodies may be regular geometric bodies or irregular geometric bodies. The photo-curable resin material is combined with the hollow structure, so that the insole 11 has good mechanical property, and the resilience performance and the shock absorption performance of the insole are superior to those of the common foamed insole 11.
With respect to the structure of outsole 12:
in some embodiments, the outsole 12 is of an integral structure, and a one-piece outsole 12 is printed by photo-curing 3D, and during the attaching process of the outsole 12 and the midsole 11, the midsole 11 is first placed in the center of the outsole 12, the central portion of the outsole 12 covers the lower surface of the midsole 11, and then the edge portion of the outsole 12 is bent to cover the side of the midsole 11.
It is further noted that, depending on the desired function of the shoe, outsole 12 may be continuous and completely cover the lower surface of midsole 11, i.e., the bottom surface of composite sole 10 is closed, or outsole 12 may be perforated, which covers a portion of the lower surface of midsole 11, i.e., the bottom surface of composite sole 10.
In some embodiments, the outsole 12 includes an outsole 12 segment with various shapes, specifically, the outsole 12 includes a sheet segment and a strip segment, the sheet segment covers the lower surface of the midsole 11, and the strip segment covers the side surface of the midsole 11.
Referring to fig. 1, a method for printing and post-processing a composite shoe sole 10 according to the present disclosure includes:
step a, designing three-dimensional structures of a midsole 11 and an outsole 12 which are matched with each other, enabling one part of the outsole 12 to cover the lower surface of the midsole 11, enabling the other part of the outsole 12 to cover the side face of the midsole 11 after being bent, respectively slicing the three-dimensional structures of the midsole 11 and the outsole 12 to obtain light pattern data for photocuring 3D printing, and configuring photocuring resin required by photocuring 3D printing;
b, adding light-curable resin into the light-curable 3D printing equipment, introducing light pattern data into the light-curable 3D printing equipment, and respectively printing a printing intermediate of the insole 11 and/or a printing intermediate of the outsole 12 through the light-curable 3D printing equipment, wherein the printing intermediate contains uncured components;
optionally, subjecting the printing intermediate of step b to a cleaning process of removing uncured photocurable resin from the surface of the printing intermediate;
d, matching the printing intermediate of the insole 11 and/or the printing intermediate of the outsole 12, so that the outsole 12 covers the whole or partial surface and side surface of the insole 11 respectively, and performing post-curing on the printing intermediate in a state that the insole 11 and the outsole 12 are matched, wherein uncured components are cured in the post-curing process;
step e. the contact surfaces between the printed intermediate of the midsole 11 and/or the printed intermediate of the outsole 12 are bonded to each other by post-curing to form said composite sole 10.
Specifically, the photo-curable resins for printing the midsole 11 and the outsole 12 are dual-curable resins, and the method for printing the composite sole 10 and the post-treatment method are specifically as follows:
step a, designing three-dimensional structures of a midsole 11 and an outsole 12 which are matched with each other, enabling one part of the outsole 12 to cover the lower surface of the midsole 11, enabling the other part of the outsole 12 to cover the side face of the midsole 11 after being bent, respectively slicing the three-dimensional structures of the midsole 11 and the outsole 12 to obtain light pattern data for photocuring 3D printing, and configuring photocuring resin required by photocuring 3D printing, wherein the photocuring resin is dual-curing resin;
b, adding light-curable resin into the light-curable 3D printing equipment, introducing light pattern data into the light-curable 3D printing equipment, and respectively printing the insole 11 printing intermediate and the outsole 12 printing intermediate through the light-curable 3D printing equipment, wherein the specific formula and the proportion of the light-curable resin can be adjusted according to the performance requirements of the insole 11 and the outsole 12, but the light-curable resin contains uncured components (the uncured components need to be cured under the conditions of heating, humidifying and the like) after the light-curable step is finished, and the printing intermediate contains the uncured components;
optionally, subjecting the printing intermediate of step b to a cleaning process for removing uncured photocurable resin from the surface of the printing intermediate;
d, matching the printing intermediate of the insole 11 with the printing intermediate of the outsole 12 to enable the outsole 12 to cover the whole or partial surface and side surface of the insole 11 respectively, maintaining the matching state of the insole 11 and the outsole 12 to perform post-curing on the printing intermediate, wherein uncured components are cured in the post-curing process;
and e, bonding the contact surfaces between the printing intermediate of the middle sole 11 and the printing intermediate of the large sole 12 through post curing to form the composite sole 10.
In the second case, the dual-curing resin is used only for printing the midsole 11, while the outsole 12 is used with the conventional photo-curable resin, and the method of printing the composite shoe sole 10 and the post-processing method are specifically:
step a, designing three-dimensional structures of a midsole 11 and an outsole 12 which are matched with each other, enabling one part of the outsole 12 to cover the lower surface of the midsole 11, enabling the other part of the outsole 12 to cover the side face of the midsole 11 after being bent, respectively slicing the three-dimensional structures of the midsole 11 and the outsole 12 to obtain light pattern data for photocuring 3D printing, respectively configuring two photocuring resins required by photocuring 3D printing, namely a dual-curing resin and a traditional photocuring resin;
b, respectively adding light-curable resin into the light-curable 3D printing equipment, introducing light pattern data into the light-curable 3D printing equipment, wherein dual-curable resin is used for printing the insole 11, the traditional light-curable resin is used for printing the outsole 12, the insole 11 printing intermediate and the outsole 12 are respectively printed by the light-curable 3D printing equipment, and the printing intermediate of the insole 11 contains uncured components;
optionally, subjecting the printing intermediate of step b to a cleaning process of removing uncured photocurable resin from the surface of the printing intermediate;
d, matching the printing intermediate of the insole 11 with the outsole 12 to enable the outsole 12 to cover the whole or partial surface and side face of the insole 11 respectively, maintaining the matched state of the insole 11 and the outsole 12 to perform post-curing on the printing intermediate, and curing the uncured components in the post-curing process;
step e. the contact surfaces between the printed intermediate of the midsole 11 and the outsole 12 are bonded to each other by post-curing to form the composite sole 10.
In the third case, only the outsole 12 is made of dual-curing resin, while the midsole 11 is made of conventional photo-curable resin, and the method of printing the composite shoe sole 10 and the post-processing method are embodied as follows:
step a, designing three-dimensional structures of a midsole 11 and an outsole 12 which are matched with each other, enabling one part of the outsole 12 to cover the lower surface of the midsole 11, enabling the other part of the outsole 12 to cover the side face of the midsole 11 after being bent, respectively slicing the three-dimensional structures of the midsole 11 and the outsole 12 to obtain light pattern data for photocuring 3D printing, respectively configuring two photocuring resins required by photocuring 3D printing, namely a dual-curing resin and a traditional photocuring resin;
b, respectively adding light-curable resin into the light-curable 3D printing equipment, introducing light pattern data into the light-curable 3D printing equipment, wherein dual-curable resin is used for printing the outsole 12, traditional light-curable resin is used for printing the midsole 11, the outsole 12 printing intermediate and the midsole are respectively printed by the light-curable 3D printing equipment, and the printing intermediate of the outsole 12 contains uncured components;
optionally, subjecting the printing intermediate of step b to a cleaning process for removing uncured photocurable resin from the surface of the printing intermediate;
d, matching the printing intermediate of the shoe outsole 12 with the shoe midsole 11, enabling the shoe outsole 12 to cover the whole or partial surface and side surface of the shoe midsole 11 respectively, maintaining the matching state of the shoe midsole 11 and the shoe outsole 12, and performing post-curing on the printing intermediate, wherein uncured components are cured in the post-curing process;
step e. the contact surfaces between the printed intermediate of the outsole 12 and the midsole 11 are bonded to each other by post-curing to form the composite sole 10.
In some embodiments, the step d is performed by using a sizing component to keep the outsole 12 and the midsole 11 in a matched state in post-curing. Specifically, the shaping piece is a mold, a groove matched with the shape and size of the composite sole 10 is formed in the mold, in the step d, the shoe outsole 12 is wrapped on the shoe midsole 11 and then embedded into the groove, and then post-curing treatment is carried out together.
In some embodiments, the post-curing in step d includes one or more of heating, radiation, moisture, etc., and the post-curing operation is selected based on the characteristics of the particular non-photocurable component.
In some embodiments, the photocurable resin consists of acrylate, diphenylethanone (photoinitiator), TPU (thermoplastic polyurethane elastomer rubber), for which the post-cure processing conditions in step d are adjusted. Specifically, the post-curing operation is heating, the heating time is 6-12 hours, and the heating temperature is 80-160 ℃.
In some embodiments, when the printing intermediates of the midsole 11 and the outsole 12 are matched in step d, in order to increase the adhesive force between the midsole 11 and the outsole 12 and ensure the adhesion effect during the post-curing process, a dual-curing resin may be coated on the contact surface between the midsole 11 and the outsole 12, and no additional glue is used to adhere the outsole 12 to the midsole 11, which not only saves cost but also is more environmentally friendly.
In some embodiments, the cleaning process in step c includes removing the uncured photocurable resin from the surface of the printing intermediate by using a centrifuge or a spin dryer.
The above description is only a preferred embodiment of the present invention, and it should not be understood that the scope of the present invention is limited thereby, and it should be understood by those skilled in the art that various other modifications and equivalent arrangements can be made by applying the technical solutions and concepts of the present invention within the scope of the present invention as defined in the appended claims.
Claims (12)
1. A printing and post-processing method for a composite shoe sole is characterized by comprising the following steps:
step a, designing three-dimensional structures of a middle sole and an outsole which are matched, wherein the middle sole is provided with an upper surface, a lower surface and a side surface, the upper surface and the lower surface are connected through the side surface, one part of the outsole covers the lower surface of the middle sole, the other part of the outsole is bent to completely or partially cover the side surface of the middle sole, the three-dimensional structures of the middle sole and the outsole are respectively sliced to obtain light pattern data for photocuring 3D printing, and photocuring 3D printing required photocuring resin is configured;
b, adding light-curable resin into the light-curable 3D printing equipment, introducing light pattern data into the light-curable 3D printing equipment, and respectively printing a shoe insole printing intermediate and/or a shoe outsole printing intermediate through the light-curable 3D printing equipment, wherein the printing intermediate contains uncured components;
optionally, subjecting the printing intermediate of step b to a cleaning process of removing uncured photocurable resin from the surface of the printing intermediate;
d, matching the printing intermediate body of the insole and/or the printing intermediate body of the outsole to enable the outsole to cover the whole or partial lower surface and side surface of the insole respectively, maintaining the matching state of the insole and the outsole to perform post-curing on the printing intermediate body, and curing uncured components in the post-curing process;
and e, mutually bonding contact surfaces between the printing midbody of the middle sole and/or the printing midbody of the large sole through post-curing to form the composite sole.
2. The method of claim 1, wherein the step a is to design a three-dimensional structure of the matched insole and outsole, and the outsole is of a one-piece structure.
3. The method for printing and post-processing the composite shoe sole according to claim 1, wherein the step a designs a three-dimensional structure of a matched insole and an outsole, and the insole has a hollow structure.
4. The method of printing and post-processing a composite shoe sole according to claim 1, wherein step b prints an outsole printed intermediate and a midsole printed intermediate, respectively, the printed intermediates containing uncured components; and in the steps d and e, matching the middle sole printing intermediate body with the shoe large sole printing intermediate body, and bonding the contact surfaces of the middle sole printing intermediate body and the shoe large sole printing intermediate body with each other through post-curing.
5. The method of printing and post-processing a composite shoe sole according to claim 1, wherein step b prints a mid-sole printing intermediate and an outsole, respectively, the printing intermediate having uncured components therein; and d, matching the middle sole printing intermediate body with the shoe outsole in the steps e, and bonding the contact surfaces between the middle sole printing intermediate body and the shoe outsole through post-curing.
6. The method for printing and post-processing a composite shoe sole according to claim 1, wherein step b comprises printing a mid-sole printing intermediate and an outsole printing intermediate respectively, wherein the printing intermediates comprise uncured components; and d, matching the printing intermediates of the insole and the outsole in the steps d and e, and bonding the contact surfaces of the printing intermediates of the insole and the outsole with each other through post-curing.
7. The method for printing and post-treating a composite shoe sole according to claim 1, wherein the step d is performed by using a fixing member to maintain the outsole and the midsole in a coupled state during post-curing.
8. The method of claim 7, wherein the shaping member is a mold having a groove, and in step d, the outsole is wrapped around the midsole and then fitted into the groove.
9. The method of printing and post-processing a composite shoe sole according to claim 1, wherein the post-curing in step d comprises one or more of heating, radiation, and moisture.
10. The method for printing and post-treating composite shoe soles according to claim 1 or 9, wherein the post-curing in step d is a heating treatment, the heating time is 6-12 hours, and the heating temperature is 80-160 ℃.
11. The method for printing and post-processing a composite shoe sole according to claim 1, wherein the step d of fitting the mid-sole printing intermediate and/or the outsole printing intermediate is carried out by coating a photo-curable resin on the fitted contact surfaces.
12. The method of printing and post-processing a composite shoe sole according to claim 1, wherein the cleaning process in step c comprises removing the uncured photocurable resin on the surface of the printing intermediate by using a centrifuge or a spin dryer.
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| JP2002078507A (en) * | 2000-09-06 | 2002-03-19 | Okamoto Ind Inc | Work shoe |
| CN203262420U (en) * | 2013-05-27 | 2013-11-06 | 徐健 | Novel deodorization sole pads |
| CN107105816A (en) * | 2014-10-31 | 2017-08-29 | 商务打印机有限公司 | Inner sole is designed |
| JP2018187039A (en) * | 2017-05-01 | 2018-11-29 | アイソテック ホールディング コーポレーション エルエルシーＩｓｏｔｅｃｈ Ｈｏｌｄｉｎｇ Ｃｏｒｐｏｒａｔｉｏｎ Ｌｌｃ | Upper comprising polyurethane three-dimensional decoration pattern, manufacturing method thereof, and shoes manufactured thereby |
| CN209563570U (en) * | 2018-12-20 | 2019-11-01 | 河南澳丽雅皮具有限公司 | One kind linking formula insole support and insole layer and insole |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11136475B2 (en) * | 2017-04-24 | 2021-10-05 | Nike, Inc. | Articles and components with UV radiation curable elastomeric materials and methods of making the same |
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| JP2002078507A (en) * | 2000-09-06 | 2002-03-19 | Okamoto Ind Inc | Work shoe |
| CN203262420U (en) * | 2013-05-27 | 2013-11-06 | 徐健 | Novel deodorization sole pads |
| CN107105816A (en) * | 2014-10-31 | 2017-08-29 | 商务打印机有限公司 | Inner sole is designed |
| JP2018187039A (en) * | 2017-05-01 | 2018-11-29 | アイソテック ホールディング コーポレーション エルエルシーＩｓｏｔｅｃｈ Ｈｏｌｄｉｎｇ Ｃｏｒｐｏｒａｔｉｏｎ Ｌｌｃ | Upper comprising polyurethane three-dimensional decoration pattern, manufacturing method thereof, and shoes manufactured thereby |
| CN209563570U (en) * | 2018-12-20 | 2019-11-01 | 河南澳丽雅皮具有限公司 | One kind linking formula insole support and insole layer and insole |
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