Casual shoe with 3D printing welt
The production of the edge strips of shoes through 3D printing technology solves the problems of high mold cost and complex process in the prior art, and realizes diversified design and lightweight production of edge strips, which improves the comfort and service life of the shoes.
Patent Information
- Application Number
- CN202520382920.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In the prior art, the strip material at the connection between the sole and the upper needs to be formed by mold molding or injection molding, resulting in high mold cost and complex process, and the opposite structural design cannot be achieved.
The edge strips are produced using 3D printing technology, modeled through modeling software, and the design model is lightweight using parametric modeling software to achieve variable design of edge strips, avoiding mold costs and reducing 3D printing time and material costs.
The diversified design of the strips is realized, which reduces production costs, improves the lightweight and comfort of the shoes, extends the service life of the shoes, and reduces the stress on the strips at the bends, reducing the probability of degumming.
Smart Images
Figure CN222929300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shoes, in particular to a casual shoe with a 3D printed welt. Background Art
[0002] As an indispensable object in people's daily life, shoes play an important role in people's lives. Vulcanized shoes: with rubber, fabric or leather as the upper, rubber as the sole, processed and formed by means of pasting, molding or injection molding, and then vulcanized under a certain temperature and pressure to endow the upper and sole with high strength and high elasticity, and firmly combine the two together.
[0003] The welt is the side part at the connection between the sole and the upper, which plays a role in reinforcement and aesthetics. The welt is a long strip of material, which is not an integral part of the sole. It is necessary to enclose the welt in a circle and combine it with the outer side of the welt wall by means of gluing. The shape of the welt needs to be formed by means of die pressing or injection molding with an injection mold. For some welts with special-shaped structural designs, it is impossible to realize processing and production because the mold cost is too high or the process is too complex to be realized. Content of the Utility Model
[0004] In order to solve the problems existing in the above background art, the utility model provides a casual shoe with a 3D printed welt. Moreover, the processing of the welt does not have a mold cost, various designs can be realized, the design structure of the welt style is changeable, and it also has the advantages of light weight, the shoes are more light and comfortable, and the service life of the shoes is long.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a casual shoe with a 3D printed welt, including a welt, a sole base, a welt wall and an upper;
[0007] The outer side of the sole base is surrounded by a welt wall. An assembly space for combining the upper is formed between the top of the sole base and the inner side of the welt wall. An installation groove adapted to the welt is formed on the outer side of the welt wall. The welt is adaptively installed in the installation groove, and the welt is a welt formed by 3D printing;
[0008] A deep groove structure extending upward from the bottom is formed at a position on the welt opposite to the sole bending position of the sole base, and the width of the welt at the position opposite to the sole bending position of the sole base is smaller than the width of other positions on the welt;
[0009] An upward convex structure is formed at a position on the installation groove of the welt wall opposite to the sole bending position of the sole base. The convex structure on the welt wall is adaptively installed with the deep groove structure on the welt.
[0010] In the prior art, for the whole 3D-printed shoe, due to the high requirements for the wear resistance of the sole and other aspects, there are special requirements for the printing material, and the overall printing time is relatively long, resulting in high material and manufacturing time costs. In this application, the welt is modeled using modeling software, the welt design model is lightweight processed using parametric modeling software, and it is formed by 3D printing. The 3D-printed welt can achieve various designs, with a variable design structure of the welt style, no mold cost, and can also meet the basic performance of traditional sports shoes. Since the welt does not contact the ground, there are not many requirements for the 3D printing material. The volume of the welt is relatively small, thus reducing the 3D printing time and material costs, enabling more people to accept and use shoes designed by 3D printing. Moreover, the 3D-printed welt also has the characteristic of being lightweight, making the shoes lighter and more comfortable, with the advantages of long service life and comfortable wearing of the shoes.
[0011] On the side of the shoe, due to the setting of the welt, the overall shoe is relatively bulky and not easy to bend. Moreover, when the shoe is used for walking for a long time, the welt at the position corresponding to the bending of the sole of the foot is prone to delamination with the side wall. In this application, a deep groove structure is formed by making a groove on the welt at the bending of the sole of the foot, and an upward convex structure is formed in the installation groove of the bottom wall. The deep groove structure of the welt is adaptively installed with the convex structure on the bottom wall, and the cross-sectional area of the welt at the bending of the sole of the foot is greatly reduced, thereby forming a region narrower than the width of the entire welt, reducing the cross-sectional area of the bending width of the welt, reducing the stress on the welt at the bending position, facilitating the bending of the shoe, and reducing the probability of welt delamination, especially suitable for the sole of a high bottom wall and the style of a thick sole shoe, greatly reducing the welt delamination rate.
[0012] Further, an upward deep groove is formed on the side of the convex structure on the bottom wall facing the bottom base.
[0013] Since the convex structure on the bottom wall is formed at a position opposite to the bending of the sole of the foot of the bottom base, in order to more conveniently bend the shoe when walking, an upward deep groove is formed at the bottom of the convex structure, further facilitating the bending of the shoe and reducing the stress on the welt at the bending position.
[0014] Further, a bending groove is formed at the bottom of the bottom base along the bending of the sole of the foot.
[0015] The base is made of hard materials with wear-resistant properties such as rubber. When the sole of the foot bends, the shoe will form a reverse stress at the bending part to prevent the foot from bending. This feature is particularly serious in vulcanized shoes with high edges and thick soles, seriously affecting the wearing comfort of people. In the present utility model, a grooving process is carried out on the base to form a region with a relatively thinner thickness compared to the entire sole base. It can be an integrally formed sole base, with a deep bending groove formed at the bending part of the sole of the foot, or it can be a combined sole with a segmented base. The base is truncated or thinned at the bending part, which can reduce the obstructive stress at the bending part, making it easier to bend at the bending part and improving the wearing comfort of the shoes.
[0016] Further, the bending groove extends along the width direction of the base, and both ends thereof extend to the bottom wall respectively.
[0017] Preferably, the bending groove extends along the width direction of the base, and both ends thereof extend to the bottom wall respectively. On the one hand, it is convenient to process and form the bending groove on the base. On the other hand, it further reduces the obstructive stress at the bending part, ensuring that the sole has a good bending effect.
[0018] Further, positioning lines are provided on the welt, and alignment lines are provided on the outer side of the bottom wall. The alignment lines cooperate with the positioning lines to position the welt fixed on the bottom wall at a predetermined position.
[0019] Preferably, the alignment line is located at the toe position on the base. Since the length of the welt is relatively long, and usually the width of the toe position of the welt is relatively small and the bending arc is relatively large, it is not easy to position the installation position of the welt at the toe position. Therefore, positioning lines are provided at the toe position of the welt, and corresponding alignment lines are provided at the toe position on the bottom wall. Through the cooperation of the positioning lines on the welt and the alignment lines on the bottom wall, the welt can be accurately fixed on the bottom wall of the base at a predetermined position.
[0020] Further, the welt is a bendable planar structure or a three-dimensional structure matching the shape of the outer side of the bottom wall.
[0021] The welt is printed by a 3D printer. The welt can be a planar structure, and the combination with the sole base is achieved by bending the welt later. It can also be directly printed into a three-dimensional structure adapted to the bottom wall of the base and directly glued and combined with the bottom wall of the base. The combination method can also be a physical inlay or a mortise and tenon splicing structure.
[0022] Further, the depth of the deep groove structure of the welt is less than or equal to 1 / 4 of the width of the welt at that position.
[0023] The welt is grooved at the bending area of the sole, and the cross-sectional area of the welt in this area is significantly reduced, thus forming a relatively narrow area compared to the width of the entire welt, reducing the cross-sectional area of the bending width of the welt, reducing the stress on the welt at the bending area, facilitating the bending of the shoe, and reducing the probability of the welt coming unstuck. This is especially suitable for the soles with high heel counters and thick-soled shoe styles, greatly reducing the rate of the welt coming unstuck. In some specific embodiments, the deep groove structure of the welt can be a truncated structure that penetrates up and down, that is, the welt is truncated.
[0024] Further, the shape and size of the welt are the same as those of the mounting groove on the outer side of the heel counter, or the shape and size of the welt are larger than those of the mounting groove on the outer side of the heel counter.
[0025] In specific embodiments, the welt can be designed to have the same shape and size as the mounting groove on the outer side of the heel counter, or the welt can be designed to have a larger area, which can not only be installed in the mounting groove on the outer side of the heel counter, but also cover the upper of the shoe, further enhancing the visual perception of 3D printing of the shoe.
[0026] Compared with the prior art, the present utility model has the following beneficial effects:
[0027] In the prior art, for the whole shoe printed by 3D printing, due to the high requirements for sole wear resistance and other aspects, there are special requirements for the printing material, and the overall printing time is long, resulting in high material and manufacturing time costs. In this application, the welt is modeled with modeling software, the design model of the welt is lightweight processed with parametric modeling software, and is formed by 3D printing. The 3D printed welt can achieve various designs, with a variety of design structures for the welt style, no mold cost, and can also meet the basic performance of traditional sports shoes. Since the welt does not contact the ground, there are not many requirements for the 3D printing material. The volume of the welt is relatively small, thus reducing the 3D printing time and material costs, enabling more people to accept and use shoes designed by 3D printing. Moreover, the 3D printed welt also has the characteristic of being lightweight, making the shoes lighter and more comfortable, having the advantages of long service life and comfortable wearing of the shoes.
[0028] Due to the setting of the welt on the side of the shoe, it is not easy to bend the shoe. Moreover, when the shoe is used for walking for a long time, the welt at the position corresponding to the bending part of the sole is prone to delamination with the side wall. In this application, a deep groove structure is formed by making a groove in the welt at the bending part of the sole, and a raised structure is formed upward in the installation groove of the bottom wall. The deep groove structure of the welt is adaptively installed with the raised structure on the bottom wall, and the cross-sectional area of the welt at the bending part of the sole is greatly reduced, so as to form a region narrower than the width of the entire welt, reduce the cross-sectional area of the bending width of the welt, reduce the stress on the welt at the bending part, facilitate the bending of the shoe, and reduce the probability of welt delamination. It is especially suitable for the soles of high-bottom walls and thick-bottom shoe styles, greatly reducing the welt delamination rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.
[0030] Figure 1 It is a schematic structural diagram of the combination of the welt and the bottom wall in the present utility model;
[0031] Figure 2 It is a schematic structural diagram of the overall structure of the shoe in the present utility model;
[0032] Figure 3 It is a schematic structural diagram of the bottom of the base in the present utility model;
[0033] Among them, the specific reference numerals are:
[0034] Welt 1, deep groove structure 2, base 3, bending groove 4, bottom wall 5, installation groove 6, raised structure 7, deep groove 8, upper 9. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0035] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0036] An embodiment of the present utility model provides a casual shoe with a 3D printed welt, as Figure 1 and Figure 2As shown in the figure, it includes a welt 1, a sole base 3, a sole wall 5 and a vamp 9; the outer side of the sole base 3 is surrounded by the sole wall 5, and an assembly space for combining the vamp 9 is formed between the top of the sole base 3 and the inner side of the sole wall 5. An installation groove 6 adapted to be installed with the welt 1 is formed on the outer side of the sole wall 5, and the welt 1 is adapted to be installed in the installation groove 6. The welt 1 is a welt 1 formed by 3D printing; a deep groove structure 2 extending upward from the bottom is formed at a position on the welt 1 opposite to the bending position of the sole base 3 of the foot, and the width of the welt 1 at the position opposite to the bending position of the sole base 3 of the foot is smaller than the width of other positions on the welt 1; an upward convex structure 7 is formed at a position on the installation groove 6 of the sole wall 5 opposite to the bending position of the sole base 3 of the foot, and the convex structure 7 on the sole wall 5 is adapted to be installed with the deep groove structure 2 on the welt 1.
[0037] In the prior art, for the whole shoe printed by 3D printing, due to the high requirements for the wear resistance of the sole and other requirements, there are special requirements for the printing materials, and the overall printing time is long, and the material and manufacturing time costs are high. In this application, the welt 1 is modeled with modeling software, the design model of the welt 1 is light-weight processed with parametric modeling software, a material suitable for 3D printing is selected, and it is formed by 3D printing. The 3D printed welt 1 can achieve various designs, the design structure of the welt 1 is changeable, there is no mold cost, and it can also meet the basic performance of traditional sports shoes. The welt 1 does not contact the ground, so there are not many requirements for the 3D printing materials. The volume of the welt 1 is relatively small, thus reducing the 3D printing time and material costs, enabling more people to accept and use shoes designed by 3D printing. Moreover, the 3D printed welt 1 also has the characteristic of light weight, making the shoes lighter and more comfortable, and having the advantages of long service life of the shoes and comfortable wearing of the shoes.
[0038] Due to the setting of the welt 1 on the side of the shoe, the whole shoe is relatively bulky and not easy to bend. Moreover, when the shoe is used for walking for a long time, the welt 1 at the position corresponding to the bending position of the foot is prone to delamination with the side wall. In this application, by making a grooving treatment on the welt 1 at the bending position of the foot to form a deep groove structure 2, and an upward convex structure 7 is formed in the installation groove 6 of the sole wall 5. The deep groove structure 2 of the welt 1 is adapted to be installed with the convex structure 7 on the sole wall 5, and the cross-sectional area of the welt 1 at the bending position of the foot is greatly reduced, thereby forming a region with a narrower width compared to the width of the whole welt 1, reducing the cross-sectional area of the bending width of the welt 1, reducing the stress on the welt 1 at the bending position, facilitating the bending of the shoe, and reducing the probability of delamination of the welt 1, especially suitable for the sole with a high sole wall 5 and the shoe styles with thick soles, greatly reducing the delamination rate of the welt 1.
[0039] Among them, an upward deep groove 8 is formed on the side of the convex structure 7 on the bottom wall 5 facing the bottom base 3. Since the convex structure 7 on the bottom wall 5 is formed at a position opposite to the sole bending part of the bottom base 3, in order to facilitate the bending of the shoe during walking more conveniently, an upward deep groove 8 is formed at the bottom of the convex structure 7, which further facilitates the bending of the shoe and reduces the stress on the welt 1 at the bending part.
[0040] Among them, as Figure 3 shown, a bending groove 4 is formed along the sole bending part at the bottom of the bottom base 3. The bottom base 3 is made of a hard material with wear-resistant properties such as rubber. At the sole bending part, the shoe will form a reverse stress to prevent the foot from bending, and this feature is particularly serious for vulcanized shoes with high edges and thick soles, seriously affecting the wearing comfort of people. In the present utility model, a grooving process is carried out on the bottom base 3 to form a region with a relatively thin thickness compared to the entire sole bottom base 3. It can be an integral formed bottom base 3, and a deep bending groove 4 is formed at the sole bending part, or it can be a combined bottom segmented bottom base 3. The bottom base 3 is truncated or thinned at the bending part, which can reduce the obstructive stress at the bending part, make the bending part easier to bend, and improve the wearing comfort of the shoe. Preferably, the bending groove 4 extends along the width direction of the bottom base 3, and its two ends respectively extend to the bottom wall 5. On the one hand, it is convenient to process the bending groove 4 on the bottom base 3, and on the other hand, it further reduces the obstructive stress at the bending part, ensuring that the sole has a good bending effect.
[0041] Among them, positioning lines are provided on the welt 1, and alignment lines are provided on the outer side of the bottom wall 5. The alignment lines cooperate with the positioning lines for positioning, and the welt 1 is fixed on the bottom wall 5 according to the established position. Preferably, the alignment lines are located at the toe position of the bottom base 3. Since the length of the welt 1 is relatively long, and usually the width of the welt 1 at the toe position is relatively small and the bending arc is relatively large, it is not easy to position the installation position of the welt 1 at the toe position. Therefore, positioning lines are provided at the toe position of the welt 1, and corresponding alignment lines are provided at the toe position of the bottom wall 5. Through the cooperation of the positioning lines on the welt 1 and the alignment lines on the bottom wall 5, the welt 1 can be accurately fixed on the bottom wall 5 of the bottom base 3 according to the established position. In a specific embodiment, the alignment lines are linear convex rib structures, and the positioning lines are linear groove structures.
[0042] Among them, the welt 1 is a bendable planar structure or a three-dimensional structure matching the shape of the outer side of the bottom wall 5. The welt 1 is printed by a 3D printer. The welt 1 can be a planar structure, and the welt 1 is bent later to achieve combination with the sole bottom base 3, or it can be directly printed into a three-dimensional structure adapted to the bottom wall 5 of the bottom base 3 and directly glued and combined with the bottom wall 5 of the bottom base 3. The combination method can also be a physical inlay or a mortise and tenon joint structure.
[0043] Among them, the depth of the deep groove structure 2 of the welt 1 is less than or equal to 1 / 4 of the width of the welt 1 at this position. A groove is made at the bending position of the welt 1 on the sole, and the cross-sectional area of the welt 1 in this area is greatly reduced, so as to form a region narrower than the width of the entire welt 1, reduce the cross-sectional area of the bending width of the welt 1, reduce the stress on the welt 1 at the bending position, facilitate the bending of the shoe, and reduce the probability of the welt 1 coming unstuck. It is especially suitable for the sole with a high sole wall 5 and the shoe style with a thick sole, greatly reducing the ungluing rate of the welt 1. In some specific embodiments, the deep groove structure 2 of the welt 1 can be a truncated structure that penetrates up and down, that is, the welt 1 is subjected to a truncation treatment.
[0044] Among them, the shape and size of the welt 1 are the same as those of the outer mounting groove 6 of the sole wall 5, or the shape and size of the welt 1 are larger than those of the outer mounting groove 6 of the sole wall 5. In a specific embodiment, the welt 1 can be designed to have the same shape and size as the outer mounting groove 6 of the sole wall 5, or the welt 1 can be designed to have a larger area, which can not only be installed in the outer mounting groove 6 of the sole wall 5, but also cover the upper 9, and can also increase the intuitive feeling of 3D printing of the shoe.
[0045] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A casual shoe with 3D printed welt, characterized in that: It includes the welt, base, bottom wall and upper; A bottom wall is arranged around the outer side of the base, an assembly space for assembling the upper is formed between the top of the base and the inner side of the bottom wall, an installation groove adapted to be installed with the welt is formed on the outer side of the bottom wall, the welt is adapted to be installed in the installation groove, and the welt is formed by 3D printing; A deep groove structure extending upward from the bottom is formed on the edge strip at a position directly opposite to the sole bend of the base, and the width of the edge strip at the position directly opposite to the sole bend of the base is smaller than the width of other positions on the edge strip; An upward protruding structure is formed in the installation groove of the bottom wall at a position directly opposite to the bending part of the sole of the base, and the protruding structure on the bottom wall is adapted to be installed with the deep groove structure on the edge strip.
2. The casual shoe with 3D printed welt according to claim 1, characterized in that: A deep groove extending upward is formed on the side of the raised structure on the bottom wall facing the base.
3. The casual shoe with 3D printed welt according to claim 1 or 2, characterized in that: The bottom of the base is formed with a bending groove along the bending position of the sole.
4. The casual shoes with 3D printed welts according to claim 3, characterized in that: The bending groove extends along the width direction of the base, and both ends thereof extend to the bottom wall respectively.
5. The casual shoe with 3D printed welt according to claim 1, characterized in that: A positioning line is provided on the edge strip, and an alignment line is provided on the outer side of the bottom wall. The alignment line cooperates with the positioning line for positioning, so that the edge strip is fixed on the bottom wall at a predetermined position.
6. The casual shoe with 3D printed welt according to claim 1, characterized in that: The edge strip is a bendable plane structure or a three-dimensional structure matching the outer shape of the bottom wall.
7. The casual shoe with 3D printed welt according to claim 1, characterized in that: The depth of the deep groove structure of the edge strip is less than or equal to 1 / 4 of the width of the edge strip at that location.
8. The casual shoe with 3D printed welt according to claim 1, characterized in that: The deep groove structure of the edge strip is a truncated structure penetrating from top to bottom.
9. The casual shoe with 3D printed welt according to claim 1, characterized in that: The shape and size of the edge strip are consistent with the shape and size of the mounting groove on the outer side of the bottom wall, or the shape and size of the edge strip are larger than the shape and size of the mounting groove on the outer side of the bottom wall.