The present embodiments relate generally to footwear and in particular to a method for making footwear and an associated system.
Lasts, such as footwear lasts, may be used to make footwear. A last may generally have the shape of a foot, including a forefoot portion, a midfoot portion and a heel portion. The last may help provide contouring for the assembled article and helps to create a desired fit.
In one aspect, the present disclosure is directed to an article forming member for a braiding system. The article forming member includes a body portion, where the body portion is substantially similar in shape to a last for an article of footwear. The body portion includes a forefoot region. The article forming member also includes a flange portion, where the flange portion includes a first end and a second end. The flange portion is disposed adjacent to the forefoot region of the body portion. The article forming member further includes a cuff region, where the shape of the cuff region is substantially different from the shape of the flange portion.
In another aspect, the present disclosure is directed to a braiding system for the manufacture of a braided upper for an article of footwear including an article forming member, where the article forming member includes a body portion and a flange portion, and where the body portion comprises a cuff region. The shape of the cuff region is substantially different from the shape of the flange portion. The braiding system further includes a braiding apparatus, and the article forming member is configured to be inserted through the braiding apparatus to form the braided upper.
In another aspect, the present disclosure is directed to a method of manufacturing a braided structure. One step includes associating an article forming member with a braiding apparatus, where the article forming member includes a body portion with a forefoot region and a heel region. The article forming member also includes a flange portion with a first end and a second end, where the first end is attached to the body portion. The braiding apparatus includes a central braiding area. A next step includes associating the article forming member with the braiding apparatus so that a first axis of the flange portion intersects the central braiding area, and moving the flange portion through the central braiding area. The first axis extends from the first end of the flange portion to the second end of the flange portion. Another step includes rotating the article forming member so that a second axis of the body portion intersects the central braiding area, and then moving the forefoot region through the central braiding area. The second axis of the body portion extends from the forefoot region to the heel region. The method thereby forms a braided structure on the article forming member.
Other systems, methods, features and advantages of the embodiments will be, or will become, apparent to one of ordinary skill in the art upon examination of the following figures and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description and this summary, be within the scope of the embodiments, and be protected by the following claims.
The embodiments can be better understood with reference to the following drawings and description. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the embodiments. Moreover, in the figures, like reference numerals designate corresponding parts throughout the different views.
The following discussion and accompanying figures disclose the use of an article forming member 100 for the manufacture of an article with a braided structure. One type of braided structure may be an upper for an article of footwear. In some cases, material can be applied around article forming member 100 to form an upper for an article of footwear. Concepts associated with the upper disclosed herein may be applied to a variety of athletic footwear types, including soccer shoes, baseball shoes, football shoes, and golf shoes, for example. Accordingly, the concepts disclosed herein apply to a wide variety of footwear types.
Throughout the detailed description and in the claims, the term “braided structure” is used to refer to the structure created by a plurality of strands that are braided together. In the case of article forming member 100, the component comprising a braided structure may be an upper for an article of footwear. The term “braided configuration” will be used to refer to the relative disposition of different components, including braided components, braid density, strands, laces and floating cables.
In different embodiments, methods of manufacturing an article using article forming member 100 can vary. In particular, the material can be shaped around article forming member 100. In some embodiments, braiding can be used to form three-dimensional structures. The braiding system discussed below could be used for forming any type of article including uppers comprising any type of material. A “braiding system” for purposes of this description refers to a system including an article forming member 100 and a braiding machine for the purpose of forming braided structures. In some embodiments, article forming member 100 may be used to conform the braided structure to the desired shape and size.
In different embodiments, article forming member 100 may be used to form any type of article of footwear including, but not limited to: a running shoe, a high heel shoe, a boot, a slip-on shoe, a high top shoe, a low top shoe, as well as other types of footwear. Article forming member 100 could also be associated with the manufacturing of any type of footwear used for sporting activities including, but not limited to: a basketball shoe, a soccer shoe, a football shoe, a rugby shoe, a baseball shoe as well as other types of footwear.
In different embodiments, the structure of article forming member 100 could vary. In some embodiments, article forming member 100 may be a substantially monolithic portion. For example, article forming member 100 could comprise various portions that are integrally formed together. In other embodiments, article forming member 100 may comprise multiple distinct portions that are joined together or otherwise associated with one another.
In one embodiment, seen in
Flange portion 104 may be a portion of article forming member 100 that is disposed adjacent to body portion 102. Body portion 102 and flange portion 104 may be a single piece or monolithic member comprising article forming member 100 in some embodiments. In other embodiments, body portion 102 and flange portion 104 may be distinct portions that are joined to produce article forming member 100. In some embodiments, article forming member 100 may not include either body portion 102 or flange portion 104.
For consistency and convenience, directional adjectives are employed throughout this detailed description corresponding to the illustrated embodiments. The term “longitudinal” as used throughout this detailed description and in the claims refers to a direction extending a length of article forming member 100. In some cases, for example, a longitudinal direction 124 may extend from forefoot region 106 to heel region 110 of body portion 102. Also, the term “lateral” as used throughout this detailed description and in the claims refers to a direction extending a width of article forming member 100. In one case, lateral direction 126 may extend between medial side 122 and lateral side 120 of article forming member 100. Furthermore, the term “vertical” or vertical direction 128 as used throughout this detailed description and in the claims refers to a direction generally perpendicular to both lateral direction 126 and longitudinal direction 124, or the direction perpendicular to the horizontal direction.
The term “forward” is used to refer to the general direction in which the toes of a foot point, and the term “rearward” is used to refer to the opposite direction, i.e., the direction in which the heel of the foot is facing. The term “horizontal” or as used throughout this detailed description and in the claims, refers to any direction substantially parallel with longitudinal direction 124 or lateral direction 126, and all directions in between. The term “vertical” refers to any direction substantially perpendicular to longitudinal direction 124 or lateral direction 126, and includes vertical direction 128.
The terms “top,” “upper portion,” “upper surface,” and other similar terms refer to the portion of an object disposed furthest from bottom surface 134 of body portion 102 and/or second end 138 of flange portion 104. The terms “bottom,” “bottom surface”, “lower,” and other similar terms refer to the portion of an object disposed closest to bottom surface 134 and/or second end 138.
Generally, in many cases, the term “upward” will refer to vertical direction 128 heading away from a ground surface, while the term “downward” refers to vertical direction 128 heading towards a ground surface. Similarly, the term “side,” as used in this specification and in the claims, refers to any portion of a component facing generally in a lateral, medial, forward, and/or rearward direction, as opposed to an upward or downward direction.
For purposes of this disclosure, the foregoing directional terms, when used in reference to an article of footwear, shall refer to the article of footwear when sitting in an upright position, with the sole facing groundward, that is, as it would be positioned when worn by a wearer standing on a substantially level surface.
Body portion 102 and flange portion 104, as well as other components that may be associated with article forming member 100, may be divided into various regions that are representative of the various regions of a finished article of footwear. It will be understood that these regions are not intended to demarcate precise regions of article forming member 100, and in some cases, one or more of these regions may be overlapping. In the embodiment of
Components associated with footwear, such as article forming member 100, may also include a lateral side 120 and a medial side 122, which extend through each of forefoot region 106, midfoot region 108, and heel region 110 along body portion 102 as well as along flange portion 104. Lateral side 120 and medial side 122 correspond with opposite sides of a component associated with the foot. More particularly, lateral side 120 corresponds with the area of the foot that faces away from a corresponding foot, and medial side 122 corresponds with the area of the foot that faces toward the corresponding foot.
It should be noted that the terms forefoot region 106, midfoot region 108, vamp region 114, heel region 110, sole region 112, cuff region 118, ankle region 116, lateral side 120, and medial side 122 can be applied to various individual components associated with footwear, such as an upper, a sole structure, an article of footwear, an article forming member, and/or an upper. It will be understood that forefoot region 106, midfoot region 108, vamp region 114, heel region 110, sole region 112, cuff region 118, and ankle region 116, are only intended for purposes of description and are not intended to demarcate precise regions of the components. Likewise, lateral side 120, and medial side 122 are intended to represent generally two sides of a component, rather than precisely demarcating the component into two halves.
It should be understood that any components that may be discussed as related to article forming member 100 may be similarly related to a second, complementary article forming member. The term complementary, as used through this specification, refers to the association of a left article of footwear with a right article of footwear, and vice-versa. However, in discussing the system as applied to a pair of footwear it should be understood that each article forming member may also be configured independently. Depending on the customization selected, user preferences, and other factors, complementary article forming members may not necessarily include substantially similar article forming members or identical article forming member components.
In addition, for purposes of clarity in this detailed description and claims, article forming member 100 may include referential terms relating to the spatial orientation of article forming member 100. In
Second axis 158 forms a non-zero angle with first plane 154. In other words, second axis 158 may not be parallel with first plane 154. Moreover, second axis 158 is seen to form a first angle 160 with first axis 156. In different embodiments, first angle 160 may range between 0 degrees to 180 degrees. In one embodiment, first angle 160 may range between 60 degrees and 120 degrees. In another embodiment, first angle 160 may range between 60 degrees and 120 degrees. In one exemplary embodiment, first angle 160 may be an obtuse angle. For example, in the embodiment of
In addition, in an exemplary embodiment, a third axis 162 extending from heel region 110 to top surface 132 of cuff region 118 is illustrated. Third axis 162 is forms a non-zero angle with first plane 154. In other words, third axis 162 may not be parallel with first plane 154. In one embodiment, third axis 162 forms a different angle with first plane 154 than the angle first axis 156 forms with first plane 154. Moreover, third axis 162 is seen to form a second angle 164 with first axis 156. In different embodiments, second angle 164 may range between 0 degrees to 180 degrees. In one embodiment, second angle 164 may range between 60 degrees and 120 degrees. In another embodiment, second angle 164 may range between 60 degrees and 120 degrees. In some embodiments, second angle 164 may be less than first angle 160. For example, in the embodiment of
In different embodiments, the geometry of article forming member 100 and portions comprising article forming member 100 may vary. In some embodiments, some portions of article forming member 100 may correspond to a shoe last. Shoe lasts are forms, shaped like a foot, around which shoes may be shaped or assembled during their manufacture. In one embodiment, body portion 102 may generally resemble a shoe last. In the embodiments of
Furthermore, in some embodiments, different portion of article forming member 100 may have a shape generally corresponding with a similar portion of a foot. For example, in some cases, forefoot region 106 may have a geometry approximately corresponding to the geometry of the forefoot of a foot. In some cases, midfoot region 108 may have a geometry approximately corresponding to the geometry of a midfoot of a foot. In some cases, heel region 110 may have a geometry approximately corresponding to the geometry of a heel of a foot.
From top surface 132, article forming member 100 may extend downward along cuff region 118 and ankle region 116. In
Ankle region 116 may be disposed adjacent to vamp region 114. Vamp region 114 and ankle region 116 may share bottom surface 134 that extends along sole region 112. In some embodiments, bottom surface 134 may be generally flat relative to other portions of article forming member 100. Bottom surface 134 is parallel to the ground surface when article forming member 100 is oriented in an upright position. In
In some embodiments, vamp region 114 may extend and join flange portion 104. Flange portion 104 may comprise various geometries, shapes, and sizes in different embodiments. In one embodiment, flange portion 104 may include two ends. A first end 136 of flange portion 104 may be joined to vamp region 114. Second end 138 of flange portion 104 may be a free end disposed further from body portion 102 than first end 136. First end 136 and second end 138 may be generally the same size and shape, or they may each differ in size and/or shape.
In some embodiments, flange portion 104 may extend outward and downward from forefoot region 106, near an area associated with the toes. Flange portion 104 may represent the lowest area (in vertical direction 128) of article forming member 100. In
In different embodiments, second end 138 may be any shape or geometry, including irregular or regular shapes. In some embodiments, for example, a non-polygonal or polygonal shape may comprise second end 138. Second end 138 may be at least partially triangular, quadrilateral, pentagonal, hexagonal, heptagonal, octagonal, or another regular or irregular shape. In one embodiment, second end 138 may be an approximately semi-circular shape, a generally half oval shape, at least a partially elliptical shape, or another curved shape.
In different embodiments, article forming member 100 may comprise different sizes. In
Article forming member 100 further includes a second height 146, extending in vertical direction 128 from top surface 132 to bottom surface 134, and represents the full height of body portion 102. In some embodiments, second height 146 may be selected based on the cuff height desired for the article of footwear. In addition, article forming member 100 includes a second length 144, extending in longitudinal direction 124 from the most rearward end of article forming member 100 to the most forward end of vamp region 114. Second length 144 represents the full length of body portion 102. In different embodiments, second length 144 will correspond to the various range of articles of footwear that may be manufactured. For example, in some embodiments, second length 144 may range between 9 centimeters and 50 centimeters. In other embodiments, second length may range from 20 centimeters to 35 centimeters. As first length 140 includes flange portion 104, second length 144 will be less than first length 140. Thus, first length will typically have a greater size range. In different embodiments, first length 140 may be between 10 centimeters and 55 centimeters. In one embodiment, first length 140 may be approximately 1-6 centimeters greater than second length 144.
In different embodiments, top surface 132 and flange portion 104 may also include varying sizes. In
Flange portion 104 includes a fourth length 152, a fifth length 202, and a second width 200. Fourth length 152 corresponds to the maximum length of flange portion 104 as it extends from first end 136 to second end 138 in longitudinal direction 124. In some embodiments, fourth length 152 may be similar to second height 146. In one embodiment, fourth length 152 may be greater than second height 146.
Fifth length 202 represents the full length of second end 138 in longitudinal direction 124, and second width 200 represents the maximum width of second end 138 in lateral direction 126. In some embodiments, first width 148 of cuff region 118 may be less than, or more narrow than, second width 200 of flange portion 104. In different embodiments, fifth length 202 and/or second width 200 may be adjusted depending on various factors, such as the method of manufacture, the type of braiding machine used, or other factors.
In different embodiments, various portions of article forming member 100 may differ substantially in size. Sizing of various portions of article forming member 100 may be configured for individual foot sizes, foot shapes, and/or requirements of the braiding machine. For example, the geometry of article forming member 100 may be adjusted to match various features of a foot that may vary from one individual to another. In some embodiments, article forming member 100 can include provisions for changing the geometry of article forming member 100 to match various protruding features of a foot of one or more individuals. For example, human structural characteristics such as bunions or heel spurs may cause a foot to protrude outwards at the toes or heel. In one embodiment, article forming member 100 can include provisions to change the geometry to include matching contours of a foot with bunions and/or heel spurs.
Thus, in some embodiments, as illustrated in the embodiments of
In different embodiments, the material composition of article forming member 100 could vary. Some examples of different materials that may be used include, but are not limited to: plastics (including polyurethane plastics and thermoplastic polyurethane plastics), foam materials, metallic materials, composite materials (such as carbon-fiber composite materials, glass-fiber composite materials and other composite materials), wood, metal, rubber, other rigid or semi-rigid materials, as well as any other materials known in the art for use in making article forming members, lasts, casts, molds, or similar structures. Some embodiments may comprise an article forming member that is substantially monolithic, so that all portions of the article forming member have a substantially similar material composition. In other embodiments, however, some portions of an article forming member could be made of different materials from other portions of the article forming member. As one possible example, some embodiments can use different materials for constructing a medial portion and a lateral portion of the article forming member. In another embodiment, flange portion 104 may be made of a different material from body portion 102.
Such a variation in materials could provide different material characteristics for the different portions and could be used, for example, to modify the rigidity characteristics of flange portion 104 relative to body portion 102 (or vice versa). The type of materials used for an article forming member may be selected according various factors including, but not limited to, desired weight, desired rigidity, desired durability, desired abrasion resistance, desired resiliency, desired grip, molding, resistance to deformation, resistance to heat, resistance to changes in pressure, or other manufacturing considerations as well as possibly other factors.
In one embodiment, the various features of article forming member 100 may be selected to achieve an article forming member with a relatively low overall weight. For example, at least some portions of article forming member 100 may be hollow or filled with material that is of less weight than the material comprising the outer surface of article forming member 100. In other embodiments, article forming member 100 may be made so that the weight of article forming member 100 is equally distributed across article forming member 100. In some embodiments, the weight distribution across article forming member 100 may be balanced and permit article forming member 100 to be more stable.
In some embodiments, such as the embodiment shown in the figures, body portion 102 and flange portion 104 may comprise an integrally formed member. In other embodiments, article forming member 100 may comprise one or more separated, or separable, portions. For example, in another embodiment, body portion 102 and/or flange portion 104 could be separate portions. In such cases, body portion 102 and/or flange portion 104 could be separately attached to portions of article forming member 100. In still other embodiments, any two portions of an article forming member could be separable from each other. The selection of integral portions or separable portions can be made according to factors including desired material, weight, size, manufacturing considerations as well as possibly other factors.
Braided structures may be fabricated manually, or may be manufactured using automated braiding machinery, such as the machinery disclosed in U.S. Pat. Nos. 7,252,028; 8,261,648; 5,361,674; 5,398,586; and 4,275,638, all of which are incorporated by reference in their entirety herein. In some embodiments, articles of apparel and/or footwear may use one or more braided structures or configurations. In some embodiments, an article of footwear may include one or more regions that comprise a braided structure. For example, an upper may include one or more layers of a braided material. In one exemplary embodiment, a substantial majority of an upper can comprise a braided construction.
By using braiding, uppers for articles of footwear may be engineered with specific features tailored to a particular athletic or recreational activity. Braided uppers can be very light while conforming closely and comfortably to the wearer's feet. In some embodiments, the fit of the upper may be adjusted to provide the specific degree of tension or tightness the wearer may prefer. Braided uppers are characterized by close containment over the wearer's foot.
Braiding can be used to form three-dimensional structures, as in the embodiments of a manufacturing sequence depicted in
Thus, during the braiding process, different portions and/or areas of article forming member 100 may be braided at different points in time while moving through central braiding area 312. A “presentation area” for purposes of this description and claims is the cross-sectional area of the portion of article forming member 100 that is directly exposed to central braiding area 312. In other words, the presentation area of a portion of article forming member 100 is the cross-sectional area of that portion in a plane defined by the central braiding area 312 (or a plane defined by braiding apparatus 300 more generally).
As article forming member 100 is inserted through central braiding area 312, strands may be braided onto a peripheral contoured portion of article forming member 100 that forms the perimeter, or periphery, of an associated presentation area. Thus, the peripheral contoured portion is the particular portion or region of the outer surface of article forming member 100 that will have strands make contact, or be wrapped, disposed, and/or attached around article forming member 100 as it moves through braiding apparatus 300.
In some embodiments, it may be desirable to provide a presentation area to a braiding apparatus with a relatively smooth peripheral contoured portion. As used herein, the term “smooth peripheral contoured portion” refers to a peripheral contoured portion that does not have any sections where the curvature changes to quickly. For example, a presentation area with a circular peripheral contoured portion would have constant curvature, which is smooth. In contrast, a presentation area with a rectangular contoured portion would include corners where the curvature changes abruptly. Providing a peripheral contoured portion that is generally rounded and/or smooth may improve performance. In some embodiments, utilization of a smooth peripheral contoured portion can improve performance as article forming member 100 moves through central braiding area 312. As yarns 306 intersect or approach one another in central braiding area 312, braiding apparatus 300 may perform more efficiently along a generally circular or otherwise more rounded cross-section. In contrast, peripheral contoured portions having an oblong shape with more edges for example, may require greater time and/or cost to braid. Similarly, peripheral contoured portions having shapes with relatively sharp edges may not move through central braiding area 312 as smoothly or as efficiently as peripheral contoured portions with softer and/or rounded contours. Thus, in some embodiments, the production output of braiding apparatus 300 may be improved when the geometry of a peripheral contoured portion is smoother and/or rounder, rather than portions comprising more oblong shapes.
In some embodiments, providing a smaller presentation area to braiding apparatus 300 as it moves through central braiding area 312 can also improve the efficiency of braiding apparatus 300 and the braiding system, as well as lower the costs of manufacture, by minimizing the waste of material. It can also decrease the expansion of central braiding area 312 that would be needed in order to permit the passage of article forming member 100 from entry side 316 to exit side 318. Thus, minimizing presentation area can also lower the strain on components of braiding apparatus 300.
As an example, referring to
Similarly, a third area 404 in a generally vertical plane may be compared to a fourth area 406 along a generally horizontal plane. Both third area 404 and fourth area 406 correspond to cross-sectional areas of body portion 102 of article forming member 100. However, third area 404 is smaller than fourth area 406. In addition, the perimeter, or a third peripheral contoured portion 416 of third area 404, is rounder relative to a fourth peripheral contoured portion 418 of fourth area 406.
In addition, a fifth area 408 in a generally vertical plane may be compared to a sixth area 410 along a generally horizontal plane. Both fifth area 408 and sixth area 410 are cross-sectional areas corresponding to cuff region 118 of article forming member 100. However, fifth area 408 is larger than sixth area 410. Moreover, the perimeter associated with a fifth peripheral contoured portion 420 is more oblong relative to a sixth peripheral contoured portion 422 of sixth area 410. Thus, fifth peripheral contoured portion 420 can include less rounded corners or sharper edges along its border relative to sixth peripheral contoured portion 422.
In some embodiments, article forming member 100 may be rotated (or re-oriented) during the braiding process to help present relatively smooth, rounded and/or small presentation areas to central braiding area 312 of braiding apparatus 300. For example, in one embodiment, article forming member 100 may be rotated to present a rounded or circular peripheral contoured portion to braiding apparatus 300.
Furthermore, as described earlier, presentation areas introduced to central braiding area 312 with peripheral contoured portions that are more rounded, or less oblong, less irregular, or with fewer corners, can improve performance of braiding apparatus 300. As depicted in
One embodiment of a manufacturing process for a braided structure is shown in
Beginning with
In
A plurality of yarn strands 310 extend from around the inner perimeter of outer frame portion 302. Each yarn 306 extends from spools 304 along outer frame portion 302 towards a central braiding area 312. As discussed below, a braided upper may be formed by moving article forming member 100 through central braiding area 312. In the embodiments of
As described above, in some embodiments, various orientations or positions of article forming member 100 may be utilized as article forming member 100 is moved through central braiding area 312. Different orientations of article forming member 100 may enhance the over braiding technique and provide greater efficiency in the production of the braided upper.
For purposes of convenience, the orientation of an article forming member relative to a braiding apparatus may be characterized according to the orientation of one or more axes of the article forming member. As used herein, an axis (e.g., a longitudinal axis) of a component is determined to be approximately perpendicular to, or approximately normal to, a surface, region or area, if an angle between the axis and the surface, region or area has a value in the range between approximately 45 degrees and 135 degrees. In some cases, an axis may be approximately perpendicular to a surface, region or area if the angle has a value in the range between approximately 75 degrees and 105 degrees.
In some embodiments, as depicted in
In the step of
A next step of an embodiment of the braiding process is shown in
In
As shown in
By orienting article forming member 100 in third position 700, body portion 102 is inserted through central braiding area 312 with a smaller and more rounded cross-sectional area than would be presented if article forming member 100 were pushed through with body portion 102 in a different orientation (e.g., a vertical orientation). As described above with respect to
As article forming member 100 is in third position 700 and moves through central braiding area 312, the peripheral contoured portions associated with forefoot region 106 and midfoot region 108 along body portion 102 can be braided. In
In one embodiment, third position 700 provides a ninth area 702 of body portion 102 to braiding apparatus 300, which is similar to third area 404, discussed with reference to
A next step of an embodiment of the braiding process is shown in
Strands 504 are shown as they wrap and/or are disposed around a peripheral contoured portion 806 of tenth area 802. Braiding continues during the rotational movement, as shown in the enlarged view of tenth area 802. Furthermore, in some embodiments, article forming member 100 may continue translational motion during a rotation. Thus, in some embodiments, article forming member 100 may move in forward direction 314 while being rotated.
After the counterclockwise rotation, article forming member 100 may be disposed in a fifth position 900, depicted in
As article forming member 100 is in fifth position 900 and moves in forward direction 314 through central braiding area 312, the surface areas associated with heel region 110, ankle region 116, and cuff region 118 along body portion 102 can be braided. In one embodiment, fifth position 900 provides an eleventh area 902 of body portion 102 to braiding apparatus 300, which is similar to sixth area 410 as discussed with reference to
After contact of top surface 132 with central braiding area 312, article forming member 100 may be oriented into a new position in a next step. In different embodiments, near the completion, upon completion, or after the completion of the braiding of article forming member 100, article forming member 100 may be rotated along another pivoting area in clockwise direction 604 as seen in
In different embodiments, the braiding process may include additional steps. In one embodiment, there may be a further step of cutting or separating the braid from article forming member 100. In another embodiment, there may be a step where article forming member 100 is fully removed from the braided structure. In some embodiments, the braided structure may be associated with other components including but not limited to a sole or trim, to form a final article. In other embodiments, the braiding process may include any process or components disclosed in Bruce et al., application Ser. No. 14/495,252, filed Sep. 24, 2014, titled “Article of Footwear With Braided Upper”, the entirety of which is hereby incorporated by reference.
As mentioned earlier, in some embodiments, the use of an asymmetrical article forming member 100 may promote additional benefits to the braiding system. In one embodiment, as body portion 102 may provide a function similar to that of a last for an article of footwear, flange portion 104 may serve a different function in the assembly process. For example, various conveyer types may be utilized in the braiding system. Flange portion 104 may allow improved linkage to the various conveyers, in a way that does not interfere or interrupt the braided structure from forming and maintaining a smooth and unbroken braided pattern along body portion 102.
The process described herein can include provisions for mounting, rotating, and/or moving article forming member 100 through braiding apparatus 300. In some cases, article forming member 100 may be provided with a hole for receiving a post. In other cases, article forming member 100 may include a threaded post for mounting. With this arrangement, article forming member 100 can be screwed onto a stand or other support for forming an article around article forming member 100.
In some embodiments, article forming member 100 may be associated with a moving conveyer for translational motion through braiding apparatus 300. In one case, article forming member 100 may be pushed through braiding apparatus 300 manually, by a linking mechanism, a linkage conveyer system, or by another apparatus. In some embodiments, article forming member 100 may be rotated through braiding apparatus 300 manually and/or through various automated processes.
In different embodiments, different components or articles may comprise one or more layers of braided materials. In different embodiments, these strands can be braided to form three-dimensional structures for a wide variety of applications. By changing the geometry, size, and/or other characteristics of article forming member 100, different braided structures may be formed. Generally, these principles could be applied to the manufacture of any article that may be worn or used by consumers. Examples of articles that are configured to be worn include, but are not limited to: footwear, gloves, shirts, pants, socks, hats, bags, undergarments, hairbands, as well as other articles.
In particular, in some embodiments, the upper of an article of footwear may comprise a plurality of strands that are braided together into a single braided construction having the overall geometry of a shoe last or foot. In different embodiments, the braided construction formed by plurality of strands may not be uniform, so that the braided configuration and/or the materials of the braided strands could vary over different regions of the upper. The structure of the plurality of strands may include structural properties such as the number of strands in the braid, the diameter of the strands, the density of the strands, and the material properties of the strands such as elasticity, rigidity, tensile strength, stretch, compressibility as well as possibly other material properties.
The configuration of a braided upper could vary over different regions of the structure. By incorporating regions with different braided configurations into an upper, the different regions can be configured with a variety of different properties, to improve the performance of the article of footwear and increase the comfort to the wearer. The configuration of a braided upper can be engineered by using different densities of braids in different parts of the upper, by using different braid patterns, by using floating cables to produce additional tension in specific regions, or by using different braiding materials in different regions of the upper. For example, different portions of an upper could have different braid densities and/or could be comprised of strands having different stretch or compressibility characteristics. Varying the stretch and/or compressibility characteristics of one or more portions of an upper may help to control comfort and feel at different locations. For example, increased stretch or compressibility in some locations may reduce sag and change the feel of the upper. In some cases, using highly stretchable and compressible strands in at least some portions of an upper may give those portions a sock-like feel.
While various embodiments have been described, the description is intended to be exemplary, rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible that are within the scope of the embodiments. Accordingly, the embodiments are not to be restricted except in light of the attached claims and their equivalents. Also, various modifications and changes may be made within the scope of the attached claims.
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