TWM548067U - Shoe vamp with 3D polyurethane decorative pattern and shoes produced therefrom - Google Patents

Description

Upper with polyurethane three-dimensional decorative pattern and shoes made

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

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. The research and development of 3D printing shoes can save a lot of cost. For example, the prototype of a pair of shoes in the past requires 12 technicians and the production time is 4 to 6 weeks. If it is changed to 3D printing, only 2 The technician can operate, and the 3D printing is more time-saving than the general production line, which can greatly shorten the working time.

In the current field of footwear, although there are some prior art techniques for designing and making a shoe using 3D printing technology, the current 3D printing shoe technology tends to be customized to manufacture high unit prices (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 strong sports) Degree), production cost, or market competitiveness, etc., so there is no mature 3D printing shoe 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, shoe function (such as the strength of the exercise) ), production costs, or market competitiveness, and many other conditions, this is the main problem of this new type, this new type provides the most effective and most advantageous solution for the above issues.

The main purpose of the present invention is to provide a shoe upper with a polyurethane (PU) three-dimensional decorative pattern and a finished shoe, the method comprising the steps of: providing a shoe upper semi-finished product, the upper semi-finished product being formed and having a vamp shape Using at least one 3D printing device, and using the PU as a 3D printing material to be ejected by the nozzle provided by the 3D printing device for 3D printing; using the above 3D printing method, on the surface of the upper semi-finished product Forming at least one PU decorative unit on the top, the PU decorative unit can be designed according to the pattern to form various decorative patterns; and then hardening to complete a PU three-dimensional decorative pattern upper surface; thereby increasing the appearance of the shoe The variety of patterns and the process efficiency and market competitiveness of the shoe and the shoes made.

In the present invention, the PU used as the 3D printing material includes: two components PU (two components PU), moisture curable one component PU, and thermoplastic PU (TPU). The two-liquid type PU is a first liquid which is slow to react and is mixed with a 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 heated to form a molten state and then ejected by a nozzle of the 3D printing device 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 PU is sprayed by the nozzle before being hardened to be printed on the shoe. On the surface of the semi-finished product.

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

In an embodiment of the present invention, the upper semi-finished product is flattened on the table surface 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 need for the conventional shoe-making process in manufacturing the upper semi-finished product. Firstly, the production cost of a shoe upper molding die and the processing cost of the burr of the semi-finished product of the upper are prepared.

In an embodiment of the present invention, the upper semi-finished product is further processed by processing to integrate with the whole or a part of the bottom material, the midsole and the outsole of the shoe, thereby forming a shoe having the shape of a shoe. The semi-finished product, the semi-finished product of the shoe is erected on the rotatable jig, so that the semi-finished product of the shoe is rotated 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 sole to form a shoe having a shoe shape. And further providing at least one groove on the bottom surface of the outsole for enabling the nozzle of the 3D printing device to print the PU on the surface of the upper of the shoe semi-finished product and the at least one groove, At least one PU decorative unit can be formed on the surface of the upper of the shoe and the bottom surface of the outer sole.

10‧‧‧Shoes semi-finished products

10a‧‧‧ upper

11‧‧‧Lace hole

20‧‧‧Polyurethane (PU)

20a‧‧‧Two-component PU

21‧‧‧First liquid

22‧‧‧Second liquid

30‧‧‧3D printing device

31‧‧‧ sprinkler

32‧‧ ‧ room

33‧‧‧ delivery tube

40‧‧‧First PU decorative unit

40a‧‧‧ embossed graphics

40b‧‧‧ embossed graphics

40c‧‧‧ embossed lines

40d‧‧‧ embossed lines

41‧‧‧ embossed graphics

50‧‧‧Substrate

51‧‧‧ midsole

52‧‧‧ outsole

521‧‧‧ Groove

60‧‧‧ shoes

60a‧‧‧Shoes semi-finished products

60b‧‧‧Shoe semi-finished products

70‧‧‧Second PU decorative unit

1 is a perspective view showing the printing operation of the nozzle of the 3D printing device in the embodiment of the present invention on the surface of a semi-finished upper.

Figure 2 is a perspective view of the upper half of the upper shown in Figure 1 after the 3D printing is completed.

Fig. 3 is a perspective exploded view showing the combination of the upper semi-finished product and the shoe substrate after the printing is completed in Fig. 2.

Figure 4 is a perspective view of the assembled shoe in Figure 3.

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

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

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

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

Fig. 9 is a perspective exploded view showing the combination of the semi-finished shoe finished with the shoe substrate (outsole) in the 3D printing shown in Fig. 8.

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

Figure 11 is a three-dimensional exploded view of the upper half of the shoe upper in combination with the shoe substrate (midsole, outsole).

Fig. 12 is a perspective view showing the three-dimensional combination of the semi-finished shoes after the combination in Fig. 11.

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

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

Fig. 15 is a perspective view showing the three-dimensional (bottom viewing angle) of the 3D printing on the bottom surface of the outer sole in Fig. 14.

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

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

Referring to Figures 1 and 2, the present invention provides an upper with a polyurethane (PU) three-dimensional decorative pattern and a finished shoe, wherein the upper of the polyurethane three-dimensional decorative pattern is as shown in Fig. 2, The utility model comprises: a shoe upper semi-finished product 10 which is made of an upper material and has an upper shape; and at least one PU decorative unit 40 which uses at least one 3D printing device 30 and uses polyurethane (PU) 20 as a column. The printing material is formed by ejecting the polyurethane 20 by the head 31 of the 3D printing device 30 to be printed on the surface of the upper semi-finished product 10 and integrated.

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

Step 1: Provide a shoe upper semi-finished product 10. The upper semi-finished product 10 can be made by a conventional 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, a shoe upper molding die is first prepared, and then the shoe upper molding die is used for casting to form a vamp prototype, and then repaired. In addition to the burrs of the vamps to complete an upper semi-finished product 10 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 styling or lace holes 11 and the like is not limited Different shape changes can be made according to the design of the upper.

Step 2: At least one 3D printing device 30 is utilized, 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, the present invention is not limited, and is mixed before use. Here, the first liquid 21 and the second liquid 22 are respectively sent by the transport pipe 33 to a 3D printing device 30. The chamber 32 before the nozzle (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 mixed and hardened before being mixed and hardened. The nozzle 31 is ejected and printed 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), The detailed structure of the conveying pipe 33 and the like and the functions thereof will not be described herein.

Step 3: At least one PU decorative unit 40 is printed on the surface of the upper semi-finished product 10 by means of a 3D printing method. The PU decorative unit 40 can be designed according to a pre-pattern to form various kinds of 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, as shown in FIG. 2, is formed at a position around the shoelace 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 operation of assembling the upper 10a and the substrate 50 of the shoe into a unit, as shown in FIG. 3, wherein the substrate of the shoe is 50 generally includes an insole (not shown), a midsole 51 and an outsole 52, but is not limited, so that a shoe 60 is completed as shown in FIG. 4, so the present invention can enhance the manufactured shoe 60. Market 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 FIGS. 1 and 2, there are two nozzles 31, but not limited thereto. The computer program is designed to be activated or synchronized. 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 the 3D printing process to perform a printing operation for different PU decoration units 40, thereby enhancing the nozzles 31. Work efficiency.

Referring to Figures 1 and 2, the upper semi-finished product 10 is flattened on the table surface of the 3D printing device 30 (not shown), so that the nozzle 31 of the 3D printing device 30 can quickly print the printing material PU20. On the surface of the upper semifinished 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 the 3D printing method using the 3D printing device 30 used in the present invention, that is, The upper semi-finished product 10 is printed by the nozzle (nozzle) 31 of the 3D printing device 30 (refer to the nozzle 31 on the right side in FIG. 1), thereby saving the conventional shoe-making process by first making an upper molding The manufacturing cost of the mold and the subsequent processing cost of trimming the burrs.

Referring to Figure 5, the upper semi-finished product 10 provided in step 1 can be further utilized first. Other processing operations (such as adhesive bonding) are combined with all or part of the substrate 50 of the shoe, such as an insole (not shown), a midsole 51, or a combination thereof, but are not limited, and are combined to form A shoe semi-finished product 60a having a shoe upper semi-finished product 10 and a shoe prototype is shown in Fig. 6; further, by using a jig or a jig (not shown), for example, the shoe semi-finished product 60a is set to be rotatable. In the jig, the rotation of the semi-finished product 60a of the shoe relative to the head 31 of the 3D printing device 30 is rotated as shown by the arrow A in FIG. 7, whereby the head 31 of the 3D printing device 30 can be used in the shoe. The 3D printing operation is performed on the surface of the upper semi-finished product 10 of the semi-finished product 60a. As shown in Fig. 7, the printing material PU20 is required to print at least one PU decorative unit 40 on the surface of the upper semi-finished product 10 as shown in Fig. 8. Show.

In addition, the shoe semi-finished product 60a having at least one PU decorative unit 40 is further processed, for example, the shoe semi-finished product 60a and the outer bottom 52 of the substrate 50 are combined (but not limited) into a processing operation, as shown in FIG. As shown in FIG. 10, as shown in FIG. 10, since at least one PU decorative unit 40 is formed on the upper of the shoe 60, the shoe 60 is different from the conventional shoe and is more varied. This new type does enhance the market competitiveness of the manufactured shoe 60.

Referring to FIG. 11, the upper semi-finished product 10 provided in the step 1 may further utilize other processing operations (such as adhesive bonding) to form an insole (not shown) and a midsole 51 with the 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 a bottom surface of the outer sole 52 (including a side edge portion extending upward from the bottom surface) is further provided. At least one recess 521, the shape of the recess 521 and its position on the bottom surface of the outsole 52 are not limited, and may be designed as needed, as shown in Figures 13 and 14 on the underside of the outsole 52. There are a plurality of irregular lateral grooves 521 but no restrictions; further, borrowing In conjunction with the design fixture or fixture (not shown), for example, the shoe semi-finished product 60b is sleeved on a rotatable jig (not shown) so that the shoe semi-finished product 60b is angularly adjusted relative to the nozzle 31. The rotation is as indicated by the arrow B in Fig. 13, whereby the head 31 can perform a 3D printing operation on the surface of the upper semifinished product 10 in the shoe blank 60b 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 is further capable of performing a 3D printing operation on the bottom surface of the outsole 52 of the shoe blank 60b as shown in FIG. 14 for printing on the grooves 521 of the bottom surface of the outsole 52. At least one PU decorative unit 70, as shown in Figures 14-15, is referred to herein as a second PU trim unit (70); wherein the print thickness (height) of the second PU trim unit 70 is designed to be slightly higher When (slightly protruding from) the bottom surface of the outsole 52, the second PU decorative unit 70 not only has a decorative function but also has a non-slip function.

In addition, the 3D printing operation of the second PU decoration unit 70 and the first PU decoration unit 40 may be performed separately or continuously, wherein the separation is performed, that is, the nozzle 31 may be first listed on the surface of the upper semi-finished product 10. All of the first PU decorative unit 40 is printed, and then the adjustment angle is rotated so that the bottom surface of the shoe semi-finished product 60b is facing the head 31, and the head 31 can be 3D for each groove 521 of the bottom surface of the outsole 52. The printing operation completes all of the second PU decorative units 70 by printing, that is, the first PU decorative unit 40 and the second PU decorative unit 70 are separately printed to form a separated state. And the continuous operation refers to the first PU decorative unit 40 in which the nozzle 31 can print a part of the surface of the upper semi-finished product 10 as shown in FIG. 13 (or includes the second PU decorative unit 70). The side edge portion), at this time, the adjustment angle is further rotated so that the bottom surface of the shoe semi-finished product 60b is facing the head 31 so that the head 31 can continuously perform 3D printing work on the bottom surface of the outsole 52. A portion of the second PU decorative unit 70 is printed as shown in FIG. 14 and then rotated to adjust the angle so that the upper semi-finished product 10 on the semi-finished product 60b is directed toward the head 31 so that the head 31 is Continuously performing a 3D printing operation on the surface of the upper semifinished product 10 to reprint a partial first PU decorative unit 40 (again back as shown in FIG. 13), thus performing crossover and continuous 3D The printing work is completed to complete all of the first PU decorative unit 40 and the second PU decorative unit 70; that is, the 3D printing of the first PU decorative unit 40 and the second PU decorative unit 70 is performed by the semi-finished product 60b. The printing operation is performed crosswise and continuously by rotating the adjustment angle, and the first PU decorative unit 40 and the second PU decorative unit 70 after the printing is completed are continuously and cross-printed, so that the partial formation is performed. The connection state is as shown in Figs. 15-16; in addition, since the first PU decoration unit 40 and the second PU decoration unit 70 have a partial connection state, the structural strength of the shoe 60 can be further enhanced.

The above description is only a preferred embodiment of the present invention, and is intended to be illustrative, and not restrictive; it will be understood by those of ordinary skill in the art Many changes, modifications, and even equivalent changes are made, but they fall within the scope of this new type of protection.

10‧‧‧Shoes semi-finished products

10a‧‧‧ upper

11‧‧‧Lace hole

20a‧‧‧Two-component PU

30‧‧‧3D printing device

31‧‧‧ sprinkler

32‧‧ ‧ room

33‧‧‧ delivery tube

40‧‧‧First PU decorative unit

40a‧‧‧ embossed graphics

40b‧‧‧ embossed graphics

40c‧‧‧ embossed lines

40d‧‧‧ embossed lines

41‧‧‧ embossed graphics

Claims (6)

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; and at least one PU decorative unit, which utilizes at least one 3D printing device and is made of polyurethane (PU) is used as the printing material of the 3D printing device, and is formed by ejecting polyurethane from the nozzle of the 3D printing device to be printed on the surface of the upper semi-finished product and integrated. The upper surface of the polyurethane three-dimensional decorative pattern according to claim 1, wherein the upper semi-finished product further utilizes the 3D printing device and uses polyurethane (PU) as a printing material to eject the nozzle by the 3D printing device. Polyurethane is formed by printing. The upper surface of the polyurethane three-dimensional decorative pattern according to claim 1, wherein the polyurethane (PU) comprises: a two-component PU (two components PU), a moisture curable one component PU (PU), Thermoplastic PU (TPU, thermoplastic PU). The upper of the polyurethane three-dimensional decorative pattern according to claim 1, wherein when the polyurethane (PU) is a two-component polyurethane (PU) as a printing material, the first liquid of the two-component polyurethane (PU) And the second liquid system is respectively conveyed by a conveying pipe to a chamber provided before the nozzle of the 3D printing device to perform uniform mixing, and then the uniformly mixed two-liquid PU is sprayed by the nozzle before the mixing hardening. Perform 3D printing work. The upper of the polyurethane three-dimensional decorative pattern according to claim 1, wherein the upper is made by the steps included in the following method: Step 1: providing a shoe semi-finished product; Step 2: using at least one 3D printing The device is made of polyurethane (PU) as the printing material; Step 3: using the nozzle of the 3D printing device, in the form of 3D printing on the semi-finished product of the upper At least one PU decorative unit is printed on the surface; and step 4: hardening is performed to complete an upper of the polyurethane three-dimensional decorative pattern. A shoe characterized by comprising the upper of a polyurethane three-dimensional decorative pattern according to any one of claims 1 to 5.