WO2018176173A1 - Shoe vamp having three-dimensional decorative pattern of polyurethane, preparation method therefor and shoe made therefrom - Google Patents

Abstract

Disclosed are a shoe vamp (10a) having a three-dimensional decorative pattern of polyurethane (PU) (20), a preparation method therefor and a shoe (60) made therefrom, wherein a semi-finished shoe vamp product (10) is firstly provided, and the semi-finished shoe vamp product (10) is formed into the shape of a shoe vamp and may be subjected to a processing operation to combine all or part of a substrate (50) in advance; then, at least one PU decorative unit (40) is printed on the surface of the semi-finished shoe vamp product (10), with the PU (20) acting as a 3D printing material, by using at least one 3D printing device (30), wherein the PU decorative unit (40) can, according to requirements, form a variety of diverse decorative patterns and further has a reinforcing effect with regard to the structural strength of the shoe vamp; hardening is then carried out to complete a shoe vamp (10a) having a decorative pattern of PU (20); and a shoe (60) is further made using the shoe vamp (10a). Thus, the appearance of the shoe (60) can be diversified, and the cost expenditure and trouble of setting up forming moulds necessary for various semi-finished shoe vamp products or PU decorative units in the prior art can be avoided, thereby improving the processing efficiency of the shoe vamp and shoe.

Description

Upper with polyurethane three-dimensional decorative pattern and its preparation method and made shoes Technical field

The invention relates to an upper with a polyurethane (PU) three-dimensional decorative pattern and a preparation method thereof, and a shoe made thereof, in particular, a polyurethane (PU) as a 3D printing material and a 3D printing method on an upper At least one PU decorative unit is printed on the surface of the semi-finished product for the shoe upper and the finished shoe to have various diversified three-dimensional decorative patterns.

Background technique

3D printing technology and its application are currently very popular. The related prior art includes US 9,538,738, US 9,522,522, US 9,460,557, US 9,453,142, etc. It is also known from the network that many large shoe factories such as NIKE, ADIDAS, Reebok, etc. have recently invested in 3D. The development of printing shoes is worth noting. For example, the prototype of a pair of shoes used in the past requires 12 technicians and the production time is 4 to 6 weeks. If it is changed to 3D printing, only 2 technicians can Operation, and 3D printing is more time-saving than the average production line, can significantly reduce working hours.

In the current field of footwear, although there have been some prior art techniques for designing and making a shoe using 3D printing technology, the current 3D printing shoe technology is more inclined to manufacture a high unit price of custom-made. Exclusive shoes such as high-heeled shoes or special shoes, if you want to mass-produce non-high-priced general shoes such as jogging shoes, all kinds of ball sports shoes, etc., because you must also worry about 3D printing materials, 3D printing operation mode, mass production Speed, shoe function (such as the intensity of sports), production costs, or market competitiveness, etc., so there is no mature 3D printing technology, especially for the production of non-high-priced general sports shoes.

Therefore, in the field of 3D printing and footwear technology, especially for the production of non-high-priced general sports shoes, how to balance the 3D printing materials, 3D printing operation mode, mass production speed, and shoe functions (such as the intensity of the exercise) The production cost, the market competitiveness, and the like are many conditions, which are the main problems to be solved by the present invention, and the present invention provides the most effective and advantageous solution to the above problems.

Summary of the invention

The main object of the present invention is to provide an upper having a polyurethane (PU) three-dimensional decorative pattern, a method for manufacturing the same, and a manufactured shoe, wherein the method comprises the steps of: providing a shoe upper semi-finished product, the shoe The semi-finished product is formed to have an upper shape; the at least one 3D printing device is used, and the PU is used as a 3D printing material to be ejected by the nozzle provided by the 3D printing device for 3D printing; by using the above 3D printing method, Printing at least one PU decorative unit on the surface of the upper semi-finished product, the PU decorative unit can be designed according to the pattern to form various diversified decorative patterns; and then hardening to complete a PU three-dimensional decorative pattern upper; This can increase the variety of decorative patterns of the shoes, and improve the process efficiency and market competitiveness of the shoes and the shoes made.

In the present invention, the PU used as the 3D printing material includes: a two-component PU (two components PU), a moisture curable one component PU, and a thermoplastic PU (TPU). , wherein the two-liquid type PU is to mix the first liquid which is slow in reaction, and then mix with the second liquid before use; wherein the moisture-hardened single-liquid type PU is hardened by reacting with moisture in the air after 3D printing; The thermoplastic PU (TPU) is first heated to form a molten state and then ejected by a head of a 3D printing apparatus for printing.

In an embodiment of the present invention, when the two-component PU is used as the 3D printing material, the first liquid such as polycyanate and the second liquid such as polyol are mixed before use, such as One liquid and the second liquid are guided to a chamber provided before the nozzle (nozzle) of the 3D printing device for uniform mixing, and then the mixed two-liquid type PU is ejected from the head before being hardened to be printed on the upper. On the surface of the semi-finished product.

In an embodiment of the invention, the nozzles provided in the at least one 3D printing device have different nozzle sizes for selecting a suitable nozzle size for printing operations in the printing process, thereby improving the working efficiency of the 3D printing.

In an embodiment of the invention, the upper semi-finished product is flattened on the table level of the 3D printing device, so that the nozzle of the 3D printing device can quickly print the PU on the surface of the upper semi-finished product.

In an embodiment of the present invention, the upper semi-finished product is further printed by 3D printing by using the 3D printing device used in the present invention, thereby avoiding the prior shoe making process to first make a shoe when manufacturing the upper semi-finished product. The manufacturing cost of the face forming mold and the subsequent processing cost of repairing the raw edge of the upper half of the shoe.

In an embodiment of the present invention, the upper semi-finished product is further processed in advance to be integrated with all or a part of the bottom material, the midsole, and the outsole of the shoe to form a shoe having the shape of a shoe. The semi-finished product is then placed on the rotatable jig to make the semi-finished product of the shoe rotate relative to the nozzle of the 3D printing device, so that the sprinkler can quickly print the PU on the surface of the upper semi-finished product.

In an embodiment of the present invention, the upper semi-finished product is first combined with the bottom material of the shoe including the inner bottom, the middle bottom and the outer bottom to form a shoe semi-finished product having a shoe shape, and further in the outsole. Providing at least one groove on the bottom surface for enabling the nozzle of the 3D printing device to respectively print the PU on the surface of the upper of the shoe semi-finished product and the at least one groove for the surface of the upper of the shoe At least one PU decorative unit can be formed on the bottom surface of the upper and the outsole.

DRAWINGS

1 is a perspective view showing a print operation of a nozzle of a 3D printing apparatus on a surface of a shoe upper semi-finished product according to an embodiment of the present invention.

2 is a perspective view of the upper semi-finished product shown in FIG. 1 after 3D printing is completed.

FIG. 3 is a perspective exploded view of the shoe upper semi-finished product after the printing is completed in FIG. 2 and further combined with the shoe substrate.

4 is a perspective view of the shoe assembled in combination in FIG.

Fig. 5 is a perspective exploded view showing the combination of the upper semi-finished product and the shoe substrate (midfield) in the present invention.

6 is a perspective view of the shoe semi-finished product formed by combining the upper semi-finished product and the shoe bottom material of FIG. 5.

Figure 7 is a side elevational view of the shoe semi-finished product shown in Figure 6 in 3D printing.

FIG. 8 is a perspective view showing an embodiment of the shoe semi-finished product shown in FIG. 7 in 3D printing.

FIG. 9 is a perspective exploded view showing the combination of the shoe semi-finished product completed by the 3D printing shown in FIG. 8 and the shoe substrate (outsole).

Figure 10 is a perspective view of the shoe semi-finished product shown in Figure 9 combined with the shoe substrate (outsole).

Figure 11 is a perspective exploded view showing the combination of the shoe upper semi-finished product and the shoe substrate (sole, outsole) in the present invention.

FIG. 12 is a schematic perspective view of the combined semi-finished shoes of FIG. 11 .

Figure 13 is a side elevational view of the shoe semi-finished product of Figure 12 for 3D printing on the upper.

Figure 14 is a perspective view showing the 3D printing of the semi-finished shoe of Figure 12 on the bottom surface of the outsole.

Figure 15 is a perspective view of the three-dimensional (bottom viewing angle) of Figure 3 on the bottom surface of the outsole.

Figure 16 is a perspective view of the three-dimensional (upper viewing angle) of the shoe after the 3D printing in Figure 15 is completed.

DESCRIPTION OF REFERENCE NUMERALS: 10--shoe semi-finished product; 10a-shoe upper; 11-lace hole; 20-polyurethane (PU); 20a-two-liquid type PU; 21-first liquid; 22-second liquid; 3D printing device; 31-nozzle; 32-capacity chamber; 33-transport tube; 40-PU decorative unit; 40a-embossed pattern; 40b-embossed pattern; 40c-embossed line; 40d-embossed line; Embossed graphics; 50-substrate; 51-mids; 52-outsole; 521-grooves; 60-shoes; 60a-shoe semi-finished products; 60b-shoe semi-finished products.

detailed description

The structure of the present invention and its technical features are as described in detail below with reference to the accompanying drawings, in which FIG.

Referring to FIG. 1 and FIG. 2, the present invention provides an upper for a polyurethane (PU) three-dimensional decorative pattern, a method for manufacturing the same, and a manufactured shoe, wherein the upper of the polyurethane three-dimensional decorative pattern is as shown in FIG. Illustrated, comprising: a upper semi-finished product 10 made of an upper material having an upper shape; and at least one PU decorative unit 40 using at least one 3D printing device 30 and using polyurethane (PU) 20 as a printing material The polyurethane 20 is ejected through the head 31 of the 3D printing device 30 to be printed on the surface of the upper semi-finished product 10 and integrated into one body.

The method for manufacturing an upper of a polyurethane (PU) three-dimensional decorative pattern of the present invention comprises the following steps:

Step 1: Provide a shoe upper semi-finished product 10. The upper semi-finished product 10 can be made by using the existing shoe-making process, but is not limited, for example, using synthetic leather such as polyurethane (PU), vinyl chloride (PVC), or a combination thereof as the upper material, and then molding processing work. For example, an upper molding die is first prepared, and then the upper molding die is used for casting to form a vamp, and the embossing of the upper veneer is repaired to complete an upper semi-finished product having an upper shape. As shown in FIG. 1 , wherein the shape of the upper semi-finished product 10 includes, for example, the position and number of the shape or the lace hole 11 is not limited, and different shape changes may be made according to the design of the upper.

Step 2: At least one 3D printing device 30 is used, and polyurethane (PU) 20 is used as the 3D printing material. The PU includes a two-component PU (two components PU), a moisture curable one component PU, and a thermoplastic PU (TPU). Here, the two-liquid type PU is used as a 3D printing material as an example, but is not intended to limit the present invention. For example, the first liquid 21 which is slow to react, such as polycyanate, is not limited, and the second liquid 22 such as a polyol is used. However, without limitation, the mixing is performed immediately before use, and the first liquid 21 and the second liquid 22 are respectively sent by the conveying pipe 33 to a nozzle provided in the 3D printing device 30 (for example, but not limited to FIG. 1). The chamber 32 before the nozzle 31 is uniformly mixed. In the mixing mode, a stirring mechanism (not shown) may be disposed inside the chamber 32, but is not limited; and the mixed two-component PU20a is used by the nozzle before the mixing and hardening. 31 is ejected in 3D on the surface of the upper semifinished product 10. Since the structure and functions of the components in the 3D printing device 30 can be completed by the prior art, the 3D printing device 30 and its components such as the shower head 31, the chamber 32 (or the internal stirring mechanism), and the transport The detailed structure of the tube 33 and the like and its functions will not be described herein.

Step 3: using a 3D printing method to print at least the surface of the upper semi-finished product 10 A PU decoration unit 40. The PU decorative unit 40 can be designed according to a pre-pattern to form various diversified decorative patterns, such as the embossed patterns 40a, 40b or the embossed lines 40c, 40d shown in FIG. 2, but not limited thereto, and even form a combination The embossed pattern of the upper strength reinforcing function, such as the embossed pattern 41 shown in FIG. 2, is formed at a position around the lace hole 11 of the upper semi-finished product 10, thereby enhancing the pulling strength of the lace hole 11.

Step 4: The upper 10a of the polyurethane three-dimensional decorative pattern is further hardened to be completed as shown in FIG.

In addition, the upper surface 10a made in the step 4 is used for subsequent processing operations, such as the processing operation of integrally assembling the upper 10a with the bottom material 50 of the shoe as shown in FIG. 3, wherein the substrate 50 of the shoe Generally, an insole (not shown), a midsole 51 and an outsole 52 are included, but are not limited, so that a shoe 60 is completed as shown in FIG. 4, so that the present invention can enhance the market of the manufactured shoe 60. Competitiveness.

In an embodiment of the present invention, the 3D printing device 30 is provided with a plurality of nozzles 31 having different nozzle sizes. As shown in FIG. 1 and FIG. 2, two nozzles 31 are provided, but not limited thereto, wherein each nozzle 31 is passed through a computer program. Designed to operate separately or simultaneously. In addition, each of the nozzles 31 can be designed to have different nozzle sizes for selecting a nozzle size 31 of a suitable nozzle size in a 3D printing process to perform a printing operation for different PU decoration units 40, thereby enhancing the operation of each nozzle 31. effectiveness.

Referring to Figures 1 and 2, the upper semi-finished product 10 is flattened on a table plane (not shown) of the 3D printing device 30, so that the head 31 of the 3D printing device 30 can quickly print the printed material PU20 on the upper. On the surface of the semi-finished product 10.

In addition, in order to improve the process efficiency of the upper 10a of the present invention, the upper semi-finished product 10 provided in the step 1 can be directly printed by 3D printing using the 3D printing device 30 used in the present invention, that is, using 3D printing. The nozzle (nozzle) 31 of the device 30 is used for printing and molding the upper semi-finished product 10 (refer to the nozzle 31 on the right side in FIG. 1), thereby saving the manufacturing cost and the subsequent production of an upper molding die for the existing shoe-making process. Repair the processing cost of the burrs.

Referring to FIG. 5, the upper semi-finished product 10 provided in step 1 may further utilize other processing operations (such as adhesive bonding) to match all or a portion of the substrate 50 of the shoe, such as an insole (not shown). The midsole 51 or a combination thereof, but not limited thereto, is combined to form a shoe semi-finished product 60a having a shoe upper semi-finished product 10 and a shoe prototype as shown in FIG. 6; further, a jig or jig designed to match the design ( For example, the shoe semi-finished product 60a is sleeved on the rotatable jig, so that the shoe semi-finished product 60a is angularly adjusted relative to the head 31 of the 3D printing device 30, as indicated by the arrow A in FIG. Thereby, the head 31 of the 3D printing apparatus 30 can perform a 3D printing job on the surface of the upper semi-finished product 10 of the shoe semi-finished product 60a as shown in FIG. 7, so that the printing material PU20 is obtained in the upper semi-finished product 10 At least one PU decorative unit 40 is printed on the surface as shown in FIG.

In addition, the shoe semi-finished product 60a, which already has at least one PU decorative unit 40, is subjected to subsequent processing operations, such as processing in which the shoe semi-finished product 60a and the outsole 52 in the substrate 50 are combined (but not limited). Thus, the shoe 60 is completed as shown in FIG. 10. Since at least one PU decorative unit 40 is formed on the upper surface of the shoe 60, the shoe 60 is different from the existing shoe and is more varied, so the present invention does It can enhance the market competitiveness of the manufactured shoes 60.

Referring to FIG. 11, the upper semi-finished product 10 provided in step 1 may further utilize other processing operations (such as adhesive bonding) to include an insole (not shown), a midsole 51, and a substrate 50 of the shoe. The outsole 52 is integrally combined to form a shoe semi-finished product 60b having a shoe shape as shown in FIG. 12, wherein at least one of the bottom surface of the outsole 52 (including a side edge portion extending upward from the bottom surface) is further provided. The groove 521, the shape of the groove 521 and its position on the bottom surface of the outsole 52 are not limited, and may be designed as needed, and are provided on the bottom surface of the outsole 52 as shown in FIGS. 13 and 14. There are a plurality of irregular lateral grooves 521 but not limited; further, by means of a matching fixture or fixture (not shown), for example, the shoe semi-finished product 60b is sleeved on a rotatable fixture (not shown) The rotation of the shoe semi-finished product 60b relative to the head 31 is shown in Fig. 13 as indicated by the arrow B in Fig. 13, whereby the head 31 can be made on the surface of the upper semifinished product 10 in the shoe semifinished product 60b. 3D print job for printing on the surface of the upper semifinished product 10 At least one PU trim unit 40 is formed, referred to herein as a first PU trim unit (40). In addition, the head 31 can further perform a 3D printing operation on the bottom surface of the outsole 52 in the semi-finished product 60b of the shoe, as shown in FIG. 14, for printing at least one PU in each groove 521 of the bottom surface of the outsole 52. The decorative unit 70 is shown in FIGS. 14-15, here referred to as a second PU decorative unit (70); wherein, when the printing thickness (height) of the second PU decorative unit 70 is designed to be slightly higher (slightly convex) When the bottom surface of the outsole 52 is used, the second PU decorative unit 70 not only has a decorative function but also has a non-slip function.

In addition, the 3D printing job of the second PU decoration unit 70 and the first PU decoration unit 40 may be performed separately or continuously, wherein the separation process means that the nozzle 31 can be printed on the surface of the upper semi-finished product 10 first. All of the first PU decorative units 40 are then rotated to adjust the angle so that the bottom surface of the outsole 52 of the shoe blank 60b faces the head 31, and the head 31 can perform a 3D printing operation for each groove 521 of the bottom surface of the outsole 52. The entire second PU decorative unit 70, that is, the first PU decorative unit 40 and the second PU decorative unit 70, are printed separately to form a separated state. The continuous operation refers to that the first head PU decorative unit 40 can print a part of the first PU decorative unit 40 on the surface of the upper semi-finished product 10 as shown in FIG. 13 (or include the side edge of the second PU decorative unit 70). Ministry At this time, the adjustment angle is further rotated so that the bottom surface of the outsole 52 of the shoe semi-finished product 60b faces the head 31 so that the head 31 can continuously perform a 3D printing job on the bottom surface of the outsole 52 to print a part. The second PU trim unit 70 is shown in Fig. 14, and then rotated to adjust the angle so that the upper semifinished product 10 on the shoe semifinished product 60b is directed toward the head 31 so that the head 31 is continuously reoriented to the surface of the upper semifinished product 10. Performing a 3D print job to reprint a portion of the first PU decoration unit 40 (again back as shown in FIG. 13), thus performing a 3D print job crosswise and continuously to complete all of the first PU decoration unit 40 and The second PU decoration unit 70; that is, the 3D printing operation of the first PU decoration unit 40 and the second PU decoration unit 70 is performed by the rotation adjustment angle of the shoe semi-finished product 60b, and the printing operation is performed continuously and continuously, and after the printing is completed, Because the first PU decorative unit 40 and the second PU decorative unit 70 are continuously and cross-printed, so that a partial connection state is formed as shown in FIGS. 15-16; in addition, since the first PU decorative unit 40 And Having a coupling state between the local unit 70 PU decoration, it can further increase the structural strength of the shoe 60.

The above description is intended to be illustrative, and not restrictive, and many modifications and changes may be made without departing from the spirit and scope of the invention. Or equivalent, but all fall within the scope of the present invention.

Claims (13)

An upper having a polyurethane three-dimensional decorative pattern, comprising: a shoe upper semi-finished product, which is made of an upper material and has an upper shape; At least one PU decorative unit that utilizes at least one 3D printing device and uses polyurethane as a printing material of the 3D printing device to eject the polyurethane through the nozzle of the 3D printing device to be printed on the surface of the upper semi-finished product and integrated into one body. form. The upper according to claim 1, wherein the upper semifinished product further utilizes the 3D printing device and uses polyurethane as a printing material to eject polyurethane through the head of the 3D printing device for printing. The upper according to claim 1, wherein the polyurethane comprises: a two-component PU, a moisture-curing single-liquid PU, and a thermoplastic PU. The upper according to claim 1, wherein when the polyurethane is a two-component polyurethane as a printing material, the first liquid and the second liquid of the two-component polyurethane are respectively sent to the conveying tube The chamber is placed in the chamber before the head of the 3D printing device to perform uniform mixing, and the uniformly mixed two-component PU is ejected from the head before the mixing and hardening to perform a printing operation. A shoe comprising the upper of the polyurethane three-dimensional decorative pattern according to any one of claims 1 to 4. The invention relates to a method for manufacturing an upper with a polyurethane three-dimensional decorative pattern, which comprises the following steps: Step 1: Provide a shoe upper semi-finished product; Step 2: using at least one 3D printing device and using polyurethane as a printing material; Step 3: using the nozzle of the 3D printing device, printing at least one PU decorative unit on the surface of the upper semi-finished product by 3D printing; and Step 4: Harden again to complete a three-dimensional decorative pattern of polyurethane. The method according to claim 6, wherein the upper semifinished product provided in the step 1 further utilizes the 3D printing device and uses polyurethane as a printing material to eject the polyurethane through the nozzle of the 3D printing device. 3D printing. The method according to claim 6, wherein the upper made in the step 4 is further processed to be integrated with the substrate of the shoe to complete a shoe. The method of claim 6 wherein the upper semi-finished product provided in step 1 Further, it is first integrated with a part of the bottom material of the shoe, thereby forming a semi-finished product of the shoe having the semi-finished upper, and then the semi-finished product of the shoe can be angularly adjusted with respect to the nozzle of the 3D printing device, thereby The nozzle of the 3D printing device is capable of performing a 3D printing operation on the surface of the upper semifinished product in the semi-finished product of the shoe, so that the PU decorative unit is formed on the surface of the upper semi-finished product. The method according to claim 6, wherein the upper semi-finished product provided in step 1 is further integrated with the bottom material of the shoe to form a shoe semi-finished product having a shoe shape, wherein Further, at least one groove is further disposed on the bottom surface of the outsole in the material; and the semi-finished product of the shoe can be angularly adjusted relative to the nozzle of the 3D printing device, so that the nozzle of the 3D printing device can be in the semi-finished product of the shoe. Performing a 3D printing job on the surface of the upper semi-finished product to form a first PU decorative unit, and performing a 3D printing job on the bottom surface of the outsole in the semi-finished product of the semi-finished product to cause the PU to print the grooves on the bottom surface of the outsole Internal to form a second PU decorative unit. The method according to claim 10, wherein the printing thickness of the second PU decorative unit formed in each of the grooves of the bottom surface of the outsole is higher than the bottom surface of the outsole. The method according to claim 10, wherein the print job of the second PU decoration unit is performed separately or continuously from the print job of the first PU decoration unit; Wherein when the second PU decorative unit is separately performed from the 3D printing job of the first PU decorative unit, the nozzle of the 3D printing device first prints all the first PU decorative units on the surface of the upper semi-finished product, and then rotates the adjustment angle. So that the bottom surface of the outsole of the shoe semi-finished product faces the head, and the nozzles of the bottom surface of the nozzle are subjected to a 3D printing operation to complete all the second PU decorative units, so that the first PU decorative unit and the second PU decorative unit are Separate printing to form a separate state; Wherein, when the second PU decoration unit and the first PU decoration unit perform the 3D printing job continuously, the nozzle of the 3D printing device first prints a part of the first PU decorative unit on the surface of the upper semi-finished product, and then rotates Adjusting the angle so that the bottom surface of the outsole of the semi-finished product of the shoe faces the head so that the head can continuously perform a 3D printing operation on the bottom surface of the outsole to print a partial second PU decorative unit, and then rotate the adjustment angle so that The upper half of the shoe semi-finished product is further oriented toward the spray head, so that the spray head can continuously perform a 3D printing operation on the surface of the upper semi-finished product to reprint another partial first PU decorative unit, thereby the first PU decoration The 3D printing operation of the unit and the second PU decorative unit cross-processes and continuously performs a printing operation by the rotation adjustment angle of the shoe semi-finished product, so that there is a relationship between the first PU decorative unit and the second PU decorative unit after the printing is completed. Partially forming a connected state. A shoe characterized by being as claimed in any one of claims 6 to 12 It is made by the method of making a vamp with a three-dimensional decorative pattern of polyurethane.

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