System and method for stretching fabric items

Abstract

A fabric stretching device includes a first section configured to releasably hold a first fabric item on a surface of the first section. The fabric stretching device also includes a fabric stretching element configured to releasably hold a first portion of the first fabric item and configured to stretch the first fabric item by movement of the fabric stretching element relative to the first section. The fabric stretching device also includes a heating element configured to heat the stretched first fabric item during a bonding process to a second fabric item

Description

Attorney Docket No.: CRME-0080WOSYSTEM AND METHOD FOR STRETCHING FABRIC ITEMSCROSS-REFERENCE TO RELATED APPLICATIONS

[0001] The present application claims the benefit of priority from the commonly owned U.S. Provisional Patent Application No. 63 / 776,780, filed March 24, 2025, and U.S. NonProvisional Patent Application No. 19 / 286,630, filed July 31, 2025, the contents of each of which are expressly incorporated herein by reference in their entirety.FIELD OF THE DISCLOSURE

[0002] The present disclosure is generally related to apparatus, systems, and methods for manufacturing and stretching fabric items, such as garments.BACKGROUND

[0003] Despite technological advances and the introduction of automation in many types of manufacturing, the manufacturing of fabric items, such as garments, remains very labor-intensive. The process of producing large quantities of ready-to-wear apparel relies heavily on manual labor and remains inefficient relative to other industrial manufacturing processes. Garment manufacturing includes multiple steps including sizing, folding, fitting, cutting, sewing, and material handling. The unique and varied properties of individual fabrics, such as weight, thickness, strength, stretch, and drape, as well as the complex nature of certain tasks, complicates material handling and automated garment manufacturing.

[0004] Accordingly, there is a need for an automated system for manufacturing fabric items to improve manufacturing efficiency and variation reduction between individual manufactured fabric items.SUMMARY

[0005] In a particular implementation, a system or apparatus can include a fabric stretching device. The fabric stretching device includes a first section configured to releasably hold a first fabric item on a surface of the first section. The fabric stretching device also includes a fabric stretching element configured to releasably hold a firstAttorney Docket No.: CRME-0080WOportion of the first fabric item and configured to stretch the first fabric item by movement of the fabric stretching element relative to the first section. The fabric stretching device also includes a heating element configured to heat the stretched first fabric item during a bonding process to a second fabric item.

[0006] In another particular implementation, a method for manufacturing a fabric article includes stretching a first fabric item, that is mounted to and supported by a surface of a first section of a fabric stretching device, by movement of a fabric stretching element relative to the first section. A first portion of the first fabric item is mounted on a surface of the fabric stretching element. The method also includes bonding the stretched first fabric item to a second fabric item via a heating element configured to heat the stretched first fabric item during bonding.

[0007] In another particular implementation, a system includes a fabric stretching device and a placement apparatus. The fabric stretching device includes a first section configured to releasably hold a first fabric item on a surface of the first section. The fabric stretching device also includes a fabric stretching element configured to releasably hold a first portion of the first fabric item and configured to stretch the first fabric item by movement of the fabric stretching element relative to the first section. The fabric stretching device also includes a heating element configured to heat the stretched first fabric item during a bonding process to a second fabric item. The placement apparatus includes one or more sections configured to releasably hold and place the first fabric item, the second fabric item, or both onto the fabric stretching device.

[0008] The features, functions, and advantages described herein can be achieved independently in various implementations or can be combined in yet other implementations, further details of which can be found with reference to the following description and drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 depicts an example of a system that can include a fabric stretching device that can be configured to manufacture a fabric article.Attorney Docket No.: CRME-0080WO

[0010] FIG. 2 depicts a diagram that illustrates another particular implementation of a system that can include the fabric stretching device.

[0011] FIG. 3 depicts a diagram that illustrates another particular implementation of a system that can include the fabric stretching device.

[0012] FIG. 4 is a diagram that illustrates an example of using the fabric stretching device.

[0013] FIG. 5 is a diagram that illustrates an example of stretching the first fabric item and bonding the first fabric item to a second fabric item.

[0014] FIG. 6 illustrates a particular implementation of the fabric stretching device.

[0015] FIG. 7 illustrates another particular implementation of the fabric stretching device.

[0016] FIG. 8 illustrates another particular implementation of the fabric stretching device.

[0017] FIG. 9 is a diagram that illustrates a flow chart of an example of a method for manufacturing a fabric article.

[0018] FIG. 10 is a diagram that illustrates a particular implementation of a placement apparatus.DETAILED DESCRIPTION

[0019] Aspects disclosed herein present systems, apparatus, and methods for stretching fabric items. Traditional manufacturing of fabric items is labor intensive and uses sewing machines, which were invented in the early nineteenth century. The laborers using these sewing machines manufactured fabric articles by using the lock stitch sewing technique.

[0020] Today this same technology remains the foundation of fabric item manufacturing. The modem process of producing large quantities of ready-to-wear fabric items relies heavily on manual labor and remains inefficient relative to other industrial manufacturing processes. The manufacturing of fabric items includes multiple steps including, but not limited to, sizing, folding, fitting, cutting, sewing, and material handling. The unique and varied properties of individual fabrics, such as weight, thickness, strength, stretch, andAttorney Docket No.: CRME-0080WOdrape, as well as the complex nature of certain tasks, complicates material handling and automated fabric item manufacturing.

[0021] In most small and large fabric item manufacturing factories, most of the material handling and fabric item manufacturing operations are conducted in a manual or semimanual manner. The fabric article manufacturing process can start with laying out a web of fabric for multiple hours to relax the fabric and remove wrinkles. Then, one or more layers of fabric can be cut based on patterns and dimensions matching the desired fabric item. Then, the cut fabric pieces are transferred from workstation to workstation, where at each workstation, one, two, or more pieces of fabrics are manually folded, overlapped along the seams, and fed into a sewing machine or serger machine (also referred to as an overlock machine). In addition, at these workstations one or more folds can create an unnecessary crease in the fabric, which will increase the amount of time to manufacture the fabric item as the crease will need to be removed.

[0022] Given the variety of fabrics, threads, seam types, and stitch types found in a finished garment, a large number of workstations with specialized tools and skilled operators can be required for assembling a fabric item. This results in fabrics or unfinished fabric items spending time in transit between workstations, which adversely affects the time required to complete a fabric item. Thus, traditional apparel manufacturing operations can include multiple sequential processes. Further, a time constant can be required between each operation to allow the fabric to relax or remove unnecessary creases, which further increases the time required to process a fabric item.

[0023] Accordingly, there is a need for an automated system for manufacturing fabric items to improve manufacturing efficiency and variation reduction between individual manufactured fabric items.

[0024] Described in this disclosure are techniques and systems for manufacturing a fabric article that improves manufacturing efficiency and variation reduction between individual manufactured fabric articles. The system for manufacturing the fabric article can include a fabric stretching device. The fabric stretching device can include a work surface that includes multiple sections. For example, the fabric stretching device can include a first section, a second section, a third section, and so forth. One or more of the sections (e.g., each of the sections) can be configured to releasably hold at least a portion of a fabricAttorney Docket No.: CRME-0080WOitem onto a surface of the section. For example, a vacuum assembly can be coupled underneath the sections and configured to apply a vacuum which holds the fabric item in place.

[0025] The fabric stretching device can include one or more fabric stretching elements configured to releasably hold a portion of the fabric item. For example, a vacuum assembly can be coupled underneath the fabric stretching element(s) and configured to apply a vacuum which holds the fabric item in place. The fabric stretching element(s) can also be configured to stretch the fabric item by movement of the fabric stretching element(s) relative to one or more other sections of the fabric stretching device. For example, one or more fabric stretching element(s) can be positioned between the fabric item and one or more sections of the fabric stretching device, where the fabric item is releasably held (e.g., by a vacuum provided by a vacuum table). As the fabric stretching element moves relative to the one or more sections, the fabric stretching element will stretch the fabric generally in the direction of movement.

[0026] The fabric stretching device can also include a heating element configured to heat the stretched fabric item during a bonding process to a second fabric item. For example, a printed circuit board (“PCB”) heater can be positioned beneath the one or more sections of the fabric stretching device to heat the fabric item during bonding.

[0027] In some implementations, a combination of the one or more sections of the fabric stretching device and the one or more fabric stretching elements can be configured to support all (or substantially all) of the fabric item during stretching, heating, and / or bonding. By supporting the entirety of the fabric item, the fabric stretching device can improve the quality of the manufactured article by reducing wrinkling, embossing, etc. during the stretching, heating, and / or bonding processes.

[0028] In some implementations, the fabric item(s) can be sized at one or more dimensions less than one or more target dimensions prior to stretching. For example, a fabric item, when cut, can be cut smaller (e.g., lengthwise, etc.) than a target size so that, when stretched, the fabric item ends up at the target size. In this manner, even though a set of fabric items may exhibit size variations, each of the fabric items can be individually stretched to the target size during manufacturing.Attorney Docket No.: CRME-0080WO

[0029] In some implementations, the fabric stretching device can also include a vision system configured to determine a first size of a first fabric item and a second size of a second fabric item. The fabric stretching device can be configured to stretch the first fabric so that the first size substantially matches the second size prior to the bonding process. For example, the fabric stretching device can include a machine vision system configured to image two fabric items to be bonded together. The image can be used by one or more processors to determine an amount of stretch, and in which dimensions, the first fabric item should be stretched to match the size of the second fabric item prior to bonding.

[0030] The process of stretching the fabric item, heating, and then bonding is repeated until the particular fabric article is complete. For example, a completed fabric article can include, but is not limited to, a garment (e.g. a shirt, pants, socks, shoes, shorts, a coat, a jacket, a skirt, a dress, an undergarment, a hat, a headband, and the like), an accessory (e.g. a wallet, a purse, and the like), and homeware (e.g. artwork, upholstery, a towel, a bed linen, a blanket, a mat, and the like).

[0031] By using the techniques and systems described herein, the manufacturing efficiency for manufacturing a fabric item can improve because the operations of stretching the fabric item, heating, and bonding can be performed at one workstation. The manufacturing efficiency can also improve because the bonding process itself can be improved. The techniques and systems described herein can enable bonding pressure across an entire seam. Applying bonding pressure across the entire seam allows for improved bonding between fabric items, particularly in contrast to methods that grip a fabric item at only one edge of the fabric item, creating gaps under the fabric or obstacles to bonding on top of the fabric that would prevent bonding.

[0032] The figures and the following description illustrate specific exemplary implementations. It will be appreciated that those skilled in the art will be able to devise various arrangements that, although not explicitly described or shown herein, embody the principles described herein and are included within the scope of the claims that follow this description. Furthermore, any examples described herein are intended to aid in understanding the principles of the disclosure and are to be construed as being withoutAttorney Docket No.: CRME-0080WOlimitation. As a result, this disclosure is not limited to the specific implementations or examples described below, but by the claims and their equivalents.

[0033] Particular implementations are described herein with reference to the drawings. In the description, common features are designated by common reference numbers throughout the drawings. In some drawings, multiple instances of a particular type of feature are used. Although these features are physically and / or logically distinct, the same reference number is used for each, and the different instances are distinguished by addition of a letter to the reference number. When the features as a group or a type are referred to herein (e.g., when no particular one of the features is being referenced), the reference number is used without a distinguishing letter. However, when one particular feature of multiple features of the same type is referred to herein, the reference number is used with the distinguishing letter. For example, referring to FIG. 1, multiple sections are illustrated and associated with reference numbers 104A, 104B, 104C and 104D. When referring to a particular one of these sections, such as the first section 104A, the distinguishing letter “A” is used. However, when referring to any arbitrary one of these sections or to these sections as a group, the reference number 104 is used without a distinguishing letter.

[0034] As used herein, various terminology is used for the purpose of describing particular implementations only and is not intended to be limiting. For example, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. Further, some features described herein are singular in some implementations and plural in other implementations. To illustrate, FIG.1 depicts a system 100 including one or more actuators (“actuator(s)” 116 in FIG. 1), which indicates that in some implementations the system 100 includes a single actuator 116 and in other implementations the system 100 includes multiple actuators 116. For ease of reference herein, such features are generally introduced as “one or more” features and are subsequently referred to in the singular or optional plural (as typically indicated by “(s)”) unless aspects related to multiple of the features are being described.

[0035] The terms “comprise,” “comprises,” and “comprising” are used interchangeably with “include,” “includes,” or “including.” Additionally, the term “wherein” is used interchangeably with the term “where.” As used herein, “exemplary” indicates anAttorney Docket No.: CRME-0080WOexample, an implementation, and / or an aspect, and should not be construed as limiting or as indicating a preference or a preferred implementation. As used herein, an ordinal term (e.g., “first,” “second,” “third,” etc.) used to modify an element, such as a structure, a component, an operation, etc., does not by itself indicate any priority or order of the element with respect to another element, but rather merely distinguishes the element from another element having a same name (but for use of the ordinal term). As used herein, the term “set” refers to a grouping of one or more elements, and the term “plurality” refers to multiple elements.

[0036] As used herein, “generating,” “calculating,” “using,” “selecting,” “accessing,” and “determining” are interchangeable unless context indicates otherwise. For example, “generating,” “calculating,” or “determining” a parameter (or a signal) can refer to actively generating, calculating, or determining the parameter (or the signal) or can refer to using, selecting, or accessing the parameter (or signal) that is already generated, such as by another component or device. As used herein, “coupled” can include “communicatively coupled,” “electrically coupled,” or “physically coupled,” and can also (or alternatively) include any combinations thereof. Two devices (or components) can be coupled (e.g., communicatively coupled, electrically coupled, or physically coupled) directly or indirectly via one or more other devices, components, wires, buses, networks (e.g., a wired network, a wireless network, or a combination thereof), etc. Two devices (or components) that are electrically coupled can be included in the same device or in different devices and can be connected via electronics, one or more connectors, or inductive coupling, as illustrative, non-limiting examples. In some implementations, two devices (or components) that are communicatively coupled, such as in electrical communication, can send and receive electrical signals (digital signals or analog signals) directly or indirectly, such as via one or more wires, buses, networks, etc. As used herein, “directly coupled” is used to describe two devices that are coupled (e.g., communicatively coupled, electrically coupled, or physically coupled) without intervening components.

[0037] In addition, implementations presented in this disclosure generally relate to apparatus, systems, and methods for handling fabrics, such as textiles, such as sheet materials, such as leather, cloth, and the like, in the manufacture of items. Some examples of such items include, but are not limited to, garments (e.g. shirts, pants, socks, shoes, shorts, coats, jackets, skirts, dresses, underwear, hats, headbands, and the like),Attorney Docket No.: CRME-0080WOaccessories (e.g. wallets, purses, and the like), technical textiles (e.g., for automotive applications, such as seats, interior, and the like), medical textiles (e.g.,implants), geotextiles (e.g., reinforcement of embankments), agrotextiles (e.g., textiles for crop protection), boating industry textiles (e.g., sails, interiors and the like) and protective clothing (e.g., heat and radiation protection for fire fighter clothing, molten metal protection for welders, stab protection and bulletproof vests, and spacesuits), and homewares (e.g., artwork, upholstery, towels, bed linens, blankets, mats, and the like).

[0038] Some fabrics (so-called “single-faced fabrics”) can include a “right side” designated to be on show in the finished item, and a “wrong side” designated to be hidden in the finished item. When such fabrics include a printed design, typically the print is applied to the right side. Additionally, when such fabrics are stretched, typically the stretch is made right side to right side, then the stretched fabrics are reversed (for example by turning inside out) such that excess fabric at the stretch is hidden, and the right sides become facing outwards from each other. Some other fabrics (so-called “double-faced fabrics”) are created with two right sides and no wrong sides. Such fabrics are constructed such that either of the two right sides can be designated to be on show in the finished item. Each system and method of the present disclosure includes the performance of manufacturing operations on fabric items that can be right side facing upwards or wrong side facing upwards. In some implementations, a manufacturing operation can be performed on a fabric item that is oriented on the right side facing upwards. In some implementations, a manufacturing operation can be performed on a fabric item that is oriented wrong side facing upwards.

[0039] In some implementations of the systems of the present disclosure, fabric items can be transported to a sequence of stations (e.g., from a stretching station to a curing station). In some such implementations, a conveyor transports individual fabric items between stations. In some implementations, a robot transports individual fabric items between stations. In some implementations, a robot transports individual fabric items between stations while the individual fabric items are secured in one or more frames. For example, the robot can pick up a frame that is holding a fabric item and move the frame with the fabric item between stations. At each station one or more operations are performed in the manufacture of a fabric item. The operations are performed on a work surface, such as a stretching table, cutting table, printing table, and the like.Attorney Docket No.: CRME-0080WO

[0040] FIG. 1 depicts an example of a system 100 that can include a fabric stretching device 102 that can be configured to manufacture a fabric article. The fabric stretching device 102 can include one or more sections 104. The one or more sections 104 can be configured to releasably hold at least a first portion of a fabric item onto a surface of the one or more sections 104. For example, the one or more sections 104 can include a first section 104A, a second section 104B, a third section 104C, and a fourth section 104D. The first section 104 A can be configured to releasably hold at least a first portion of the fabric item onto a surface of the first section 104A. The second section 104B can be configured to releasably hold at least a second portion of the fabric item onto a surface of the second section 104B. In some implementations, the third section 104C and the fourth section 104D can be configured to releasably hold at least a third portion of the fabric item and / or a fourth portion of the fabric item, respectively. The first section 104A and the second section 104B can be configured to have an axis of rotation 118A. The third section 104C and the fourth section 104D can be configured to have an axis of rotation 118A. The plurality of sections 104 of the fabric stretching device 102 can be configured to rotate about the axes of rotation 118 as part of, for example, a fabric folding process or another fabric article manufacturing process.

[0041] As one example of a mechanism to releasably hold portions of the fabric item, the one or more sections 104 can include perforations 106 coupled to a vacuum assembly. In this example, the vacuum assembly can be coupled underneath the one or more sections 104 to apply a suction to hold the portions of the fabric item in place. The one or more sections 104 and the vacuum assembly can be configured such that a vacuum applied through the perforations 106 of an individual one of the one or more sections 104, such as the first section 104A, can be controlled independently of a vacuum applied through the perforations 106 of another one of the one or more sections 104, such as the second section 104B. For example, a vacuum can be applied through the perforations 106 of the first section 104A while no vacuum is applied through the perforations 106 of the second section 104B. In another example, a vacuum can be applied through the perforations 106 of any one or more of the first section 104A, the second section 104B, the third section 104C, or the fourth section 104D, while no vacuum is applied through the perforations 106 of any one or more of the other sections 104. Additionally, a vacuum can be applied through the perforations 106 of at least one of the one or more sections 104 at a firstAttorney Docket No.: CRME-0080WOstrength, while the vacuum applied through the perforations 106 of one or more other sections 104 is at a second strength, where the first strength and the second strength are different.

[0042] As another example of a mechanism to releasably hold portions of the fabric item, one or more of the sections 104 can include an electrostatic plate. In this example, a static electrical charge applied to the electrostatic plate can be turned on to hold a portion of the fabric item or off to release the portion of the fabric item. Other examples of mechanisms to releasably hold portions of the fabric item include, without limitation, a mechanical coupling mechanism such as a stretch down frame assembly, a hook and loop fastener assembly, a textured gripping material configured to attach to fabric with a non-abrasive, slip-resistant grip, releasable adhesive assembly, etc., inertia, and so forth.

[0043] The fabric stretching device 102 can include a masking template 110. The masking template 110 can be configured to be complementary to a shape of one or more portions of the fabric article. For example, the shape of the fabric article being manufactured can be a sleeve to a t-shirt. In this example, the masking template 110 can have a shape that corresponds to an outline of the shape of fabric used to form the sleeve for the t-shirt. The masking template 110 can be removable based on the size of the particular fabric article being manufactured. For example, the fabric article being manufactured can cover most or all of the one or more sections 104, in which case the masking template 110 can be removed to accommodate the large size of the fabric item. In another example, the fabric article being manufactured can be small, such as children’s clothing. In this example, the size of the masking template 110 can be adjusted (or the masking template 110 can be replaced) to cover a majority of the perforations 106 on the one or more sections 104 to accommodate the small size of the fabric item. When air flow (e.g., vacuum) is used to retain the portions of the fabric article to the sections 104 of the fabric stretching device 102, the masking template 110 is configured to block the airflow through particular portions of the fabric stretching device 102 to focus the air flow in regions in which retention of the fabric item is desired.

[0044] In the example illustrated in FIG. 1, the fabric stretching device 102 can include alignment indicia 112. The alignment indicia 112 can be configured to indicate edge positions, stretch positions, or both. In some implementations, the masking template 110Attorney Docket No.: CRME-0080WOcan include or correspond to the alignment indicia 112. In other implementations, the alignment indicia 112 are distinct from the masking template 110. The alignment indicia 112 can be used for the placement of a fabric item onto the one or more sections 104. For example, the fabric stretching device 102 can include or be associated with a placement apparatus 120 (e.g., a robot). The placement apparatus 120 can include an articulated arm 122 attached to a gripper 124. The gripper 124 can be manipulated by the articulated arm 122 to perform operations on the fabric item. For example, the gripper 124 can be configured to retrieve and place the first fabric item on one or more sections 104 based on the alignment indicia 112. Continuing this example, the placement apparatus 120 can further include an alignment sensor 126. The alignment sensor 126 can be configured to generate sensor data indicating a first position of the first portion of the fabric item relative to the alignment indicia 112, a second position of the second portion of the fabric item relative to the alignment indicia 112, or both. The placement apparatus 120 can be further configured to, based on the sensor data, reposition, using the gripper 124, the first portion of the fabric item, the second portion of the fabric item, or both, so that the fabric item is within the alignment indicia 112.

[0045] In some implementations, the fabric stretching device 102 can include one or more fabric stretching elements 108. Each of the one or more fabric stretching elements 108 can be configured to releasably hold a first portion of the first fabric item. For example, a fabric stretching element 108 can be configured as a flat plate that includes a plurality of holes configured to allow a vacuum to pass through the fabric stretching element 108. Each of the fabric stretching elements 108 can also be configured to stretch the first fabric item by movement of the fabric stretching element 108 relative to one or more sections 104 of the fabric stretching device 102. The fabric stretching element(s) 108 can be configured to be positioned above a fabric item placed on the fabric stretching device 102, below the fabric item (e.g., between the fabric item and one or more sections 104 of the fabric stretching device 102), or a combination thereof.

[0046] In aspects, one or more of the fabric stretching elements 108 are configured to move along an X-Y-Theta planar space relative to one or more sections 104 of the fabric stretching device 102. The fabric stretching element(s) 108 can be configured to stretch a fabric item in one or more dimensions in the X-Y-Theta planar space. For example, the fabric stretching element 108B can be configured to stretch a fabric item in a firstAttorney Docket No.: CRME-0080WOstretching direction 140. The fabric stretching element 108B can perform this stretching by moving, relative to the sections 104C, 104D, away from the axis of rotation 118B along the first stretching direction 140. As another example, the fabric stretching element 108A, the fabric stretching element 108C, or both can be configured to stretch the fabric item in a second stretching direction 142. The fabric stretching element 108A, the fabric stretching element 108C, or both can perform this stretching by moving, relative to the sections 104C, 104D, away from the axis of rotation 118A along the second stretching direction 142. In a particular configuration, the fabric stretching elements 108A, 108C can be configured to move away from one another relative to the sections 104C, 104D.

[0047] In some implementations, the fabric stretching device 102 can include a single fabric stretching element 108. In the same or alternative implementations, the fabric stretching device 102 can include a plurality of fabric stretching elements 108. Each of the fabric stretching elements 108 can be the same shape, material, configuration, etc., each can be different, or some combination thereof. For example, as illustrated in FIG. 1, the fabric stretching element 108A is substantially rectangular and configured to move along the second stretching direction 142 while substantially perpendicular to the second stretching direction 142. The fabric stretching element 108C is also substantially rectangular and configured to move along the second stretching direction 142 while positioned at a non-perpendicular angle to the second stretching direction 142. The fabric stretching element 108B includes one or more curved surfaces and is configured to move along the first stretching direction 140 while substantially parallel to the first stretching direction 140. The particular shape, configuration, etc. of each fabric stretching element 108 can be dependent on the particular fabric article to be manufactured, the shape, texture, fabric, etc. of a particular fabric item, etc.

[0048] In some aspects, one or more of the fabric stretching elements 108 include a plate moveably coupled between the first portion of a fabric item and a section 104 of the fabric stretching device 102. The plate can be configured in a variety of shapes depending on the particular fabric article to be manufactured, the particular fabric item to be stretched, the particular stretch required for a particular fabric item, etc. For example, the plate can be substantially rectangular, as illustrated in FIG. 1 by the fabric stretching elements 108A, 108C. As another example, the plate can include one or more curved surfaces, as illustrated in FIG. 1 by the fabric stretching element 108B. Additionally, theAttorney Docket No.: CRME-0080WOplate can be shaped in other dimensions according to the criteria of the particular fabric article manufacturing process. For example, the plate can be substantially flat, formed with dimensions configured to avoid embossing during the bonding process, etc.

[0049] In the same or alternative aspects, one or more of the fabric stretching elements 108 can be substantially cylindrical, as described in more detail below with reference to FIG. 8. In such aspects, the fabric stretching element(s) 108 can be configured to move along a rotational axis and a translational axis relative to one or more sections 104 of the fabric stretching device 102. The fabric stretching element(s) 108 can be configured to stretch a particular fabric item according to a ratio between a first movement along the rotational axis and a second movement along the translational axis.

[0050] According to some aspects, one or more of the fabric stretching elements 108 can be a wedge shape, as described in more detail below with reference to FIG. 7. In such aspects, one or more sections 104 of the fabric stretching device 102 can include a first wedge section and a section wedge section. The fabric stretching element 108 can be configured to move between a first state and a second state. In the first state, the fabric stretching element 108 is situated between the first wedge section and the second wedge section. In the second state, a portion of the fabric stretching element 108 is situated outside a common edge of the first wedge section and the second wedge section.

[0051] The fabric stretching elements 108 are described in more detail below with reference to FIGs. 2-9.

[0052] In some implementations, the fabric stretching device 102 can include one or more hinges 114. The one or more hinges 114 can be configured to couple the one or more sections 104 to each other. For example, the hinge 114A can be configured to couple the second section 104B to the first section 104A. In other examples, the hinge 114B can be configured to couple the second section 104B to the third section 104C, and the hinge 114C can be configured to couple the fourth section 104D to the first section 104A. The hinge 114 can be configured to enable one or more of the sections 104 to rotate relative to one or more other sections 104. For example, the hinge 114A can be configured to enable the second section 104B to rotate about the axis of rotation 118A orthogonal to a normal of the surface of the first section 104A to stretch the second portion of the fabric item onto the first portion of the fabric item. This action can alsoAttorney Docket No.: CRME-0080WOpress the first portion of the fabric item and the second portion of the fabric item together to stretch the first and second portions of the fabric item. The rotation of the second section 104B can align an edge of the first portion of the fabric item and an edge of the second portion of the fabric item to form a butterfly stretch therebetween. In another example, the hinge 114B and / or the hinge 114C can be configured to enable the third section 104C and / or the fourth section 104D to rotate about the axis of rotation 118B orthogonal to a normal of the surface of the first section 104A and / or the second section 104B to stretch a portion of the fabric item onto another portion of the fabric item and to press those portions of the fabric item together. In other implementations, the axis of rotation 118 can be at an angle that corresponds to the type of stretch necessary for a particular fabric item. In this implementation the angle of the axis of rotation 118 can be non-parallel to the surface of one or more of the sections 104.

[0053] In the example illustrated in FIG. 1, the fabric stretching device 102 also includes one or more actuators 116. The one or more actuators 116 can comprise an electrically operated mechanism, such as one or more of a motor, solenoid, piezoelectric material, electroactive polymer, shape-memory alloy, and so forth. The one or more actuators 116 can include, be coupled to, or in communication with a controller 128. The controller 128 can be used to provide a signal or other input that operates the one or more actuators 116 to produce movement of a movable component. For example, the actuator 116A can be configured to rotate the second section 104B toward the first section 104A to stretch the second portion of the fabric item onto the first portion of the fabric item. This action can also press the first portion of the fabric item and the second portion of the fabric item together to stretch the first and second portions of the fabric item.

[0054] The controller 128 can be configured to monitor and control the operations of the fabric stretching device 102 and the individual components of the fabric stretching device 102. For example, the controller 128 can be configured to send control signals to the one or more actuators 116 during manufacturing of the fabric item that includes the first portion and the second portion. In other examples, the controller 128 can be configured to direct the placement apparatus 120. The controller 128 can include one or more software applications stored in memory and executed using one or more processors in a computing system. The controller 128 can receive data from one or more sensors, such as an alignment sensor, camera, a barcode reader, a quick response (QR) code reader, a radioAttorney Docket No.: CRME-0080WOfrequency identification (RFID) tag reader, a proximity sensor, or the like. The one or more sensors are associated with the individual apparatuses of the fabric stretching device 102. The controller 128 can be configured to process the data and direct the operation of one or more components of the fabric stretching device 102.

[0055] The system 100 or the fabric stretching device 102 can also include a cutter. The cutter can be configured to cut fabric into a shape that is associated with the fabric article being manufactured. For example, the cutter can cut the fabric into the shape of a t-shirt sleeve or into the shape associated with an undergarment, and so forth. The cutter can also be configured to make one or more intermediate cuts. For example, an intermediate cut can be associated with an eventual seam, neckline, armhole, or hemline of the fabric item. In some implementations, the one or more intermediate cuts can be omitted. In another implementation, the cutter can include a blade on a carrier that is movable with respect to the fabric while cutting the fabric.

[0056] In some implementations, a fabric item to be stretched can be sized at one or more dimensions less than one or more target dimensions prior to stretching. For example, a fabric item that is part of a shirt sleeve, undergarment, etc. can be cut to be slightly smaller than a target size so that the fabric item can be stretched to fit the target size. The target size can include, for example, a length along one or more dimensions. This can allow the fabric to settle prior to stretching, allowing the stretched fabric item to better fit the bonding process for the manufactured fabric article. In some aspects, the target dimensions can be determined by, for example, a machine vision system configured to image a second fabric item to determine the target dimension(s).

[0057] In yet another implementation, the cutter is controlled by the controller 128. The cutter can have a sensor that can detect a feature associated with the fabric item. For example, a printed design or a fiducial can be on or in the fabric associated with the fabric item. The controller 128 can use information of the detected feature to direct or control the cutter to cut the fabric in a shape associated with the fabric item. For example, the controller 128 can direct the cutter to cut at specific locations, cut predetermined lengths, shapes, and so forth.

[0058] The system 100 or the fabric stretching device 102 can include an adhesive applicator 130. The adhesive applicator 130 can include an articulated arm 132 attachedAttorney Docket No.: CRME-0080WOto a dispensing nozzle 134. The dispensing nozzle 134 can be manipulated by the articulated arm 132 to perform dispensing of adhesive at one or more locations on the fabric item. The adhesive applicator 130 can also include a sensor 136. The sensor 136 can be configured to generate sensor data indicating location of where the adhesive was dispensed, particular pattern associated with the dispensing of the adhesive, amount of adhesive dispensed, and so forth.

[0059] The adhesive can be applied in the form of a liquid deposited onto the fabric item. The adhesive can permeate at least partially into the fabric of the fabric item. In other implementations, the adhesive can at least partially remain on a surface of the fabric of the fabric item. The adhesive can be configured to be cured by a curing system 138. The curing system 138 can be included in the fabric stretching device 102 or can be a standalone device or part of another device. The curing system 138 can be configured to cure the adhesive by applying pressure, applying heat, applying moisture, exposing the adhesive to ambient conditions, or waiting for a predetermined duration of time. The application of heat can include a hot press (hot surface), heating paddles, hot air, infra-red (IR) radiation, microwave, and so forth. The curing of the adhesive can result in an additional stretch being formed. For example, the stretch can be an overlap stretch, a lap stretch, a butterfly stretch, a seam associated with a hem, and so forth.

[0060] In some implementations, the adhesive can be deposited onto the fabric item in one or more of a continuous line, a non-continuous line, one or more droplets, a single line, or multiple lines. In some implementations, lines or droplets can be deposited onto the fabric item according to one or more of uniform shape, uniform size, uniform separation between adjacent droplets, varying shape, varying size, or varying separation between adjacent droplets. The adhesive can also be deposited onto the fabric item in a pattern tailored according to any one or more of a hem, a desired seam size, a desired seam strength, or a desired accommodation of stretch of at least a portion of the fabric item.

[0061] In some implementations, the system 100 or the fabric stretching device 102 can include a robot. The robot can include or correspond to the placement apparatus 120, the adhesive applicator 130, or a combination thereof. The robot can also be a standalone device or part of another device. The robot can be configured to move fabric items onto,Attorney Docket No.: CRME-0080WOand remove fabric items from, the one or more sections 104. In some implementations, the robot can be mounted on a gantry above the one or more sections 104. In other implementations, the robot can be freestanding. The robot can include an articulated arm attached to a head that can selectively hold and release the fabric item. In some implementations, the head can include clamps or other grippers that can selectively hold or release the fabric item. In other implementations, the head can include an electrostatic plate to selectively hold or release the fabric item. In some implementations, the head can include a vacuum assembly, such as a perforated plate coupled to a vacuum pump, to selectively hold or release the fabric item.

[0062] The robot can also include a sensor that can be used to assist with positioning of the head with respect to a fabric item on the one or more sections 104. For example, the sensor can include a camera. For instance, the camera can capture an image of the fabric item and relay the image to the controller. The controller 128 can determine the position, orientation, and / or extent of the fabric item on the one or more sections 104 with respect to the alignment indicia 112. The controller 128 can also determine the position, orientation, and / or extent of the fabric item on the one or more sections 104 with respect to a second fabric item on one or more other sections 104.

[0063] The controller 128 can direct the head to the fabric item according to the determined position, orientation, and / or extent of the fabric item on the one or more sections 104 with respect to the alignment indicia 112, the second fabric item, or both. In some implementations, the controller 128 can use images captured by the one or more cameras in controlling operation of any one or more sections 104, the fabric stretching element(s) 108, the one or more actuators 116, the vacuum assembly, the adhesive applicator 130, the cutter, the robot, or any combination thereof. For example, the controller 128 can direct one or more of the fabric stretching element(s) 108 to move, relative to one or more sections 104, a certain amount along one or more stretching directions to stretch the fabric of the fabric item along one or more dimensions.

[0064] In some implementations, one or more other finishing operations can be performed at the location of the fabric stretching device 102 or at another workstation or another device. For example, one or more portions of the fabric item can be trimmed or hemmed. The system 100 or the fabric stretching device 102 can include a printer. TheAttorney Docket No.: CRME-0080WOprinter can be configured to print a design onto the fabric item. The printer can include a printhead that is movable with respect to the fabric item while printing the design. The printer can include at least one of: a Direct To Garment (DTG) printer, a sublimation printer, or a screen-printing printer, or a combination thereof. In some implementations, the fabric item on which the printing is performed can be a single-color fabric, such as white color fabric, and the printer can print on part of or on the entire fabric to dye, colorize, or create a customized color and design pattern. In another implementation, the printing by the printer can be performed as an on-demand process, based on the requirements of the particular job. For example, the color(s) and / or pattem(s) applied by the printer can be tailored for the manufacture of each individual fabric item.

[0065] In some implementations, the fabric item can be transported to a packaging station at which the fabric item is packaged for further transportation.

[0066] In operation, as illustrated in more detail below with reference to FIGs. 2-5, a first fabric item is placed onto a particular section 104 of the fabric stretching device 102. For example, as illustrated in FIG. 5, a fabric item that will form a shirt sleeve can be placed onto a first section 104 (e.g., section 104D). As another example, as illustrated in FIG. 3, a part of a larger fabric item that will form an undergarment can be placed on a first section 104 (e.g., section 104A of FIG. 3). The section 104 on which the first fabric item is placed is configured to releasably hold the first fabric item on a surface of the section 104 (e.g., via negative pressure provided by a vacuum table).

[0067] A fabric stretching element 108 is configured to releasably hold a portion of the first fabric item. For example, the fabric stretching elements 108D, 108E of FIG. 3 are configured to releasably hold a portion of a fabric item that will form an undergarment (e.g., via negative pressure provided by a vacuum table). The fabric stretching elements 108 will stretch the first fabric item by movement of the fabric stretching elements 108 relative to the section 104 on which the fabric item is placed. For example, the fabric stretching elements 108D, 108E of FIG. 3 can stretch the fabric item by movement of the fabric stretching elements 108D, 108E relative to the section 104A and relative to one another.

[0068] A heating element can then heat the stretched first fabric item during a bonding process to a second fabric item. In an example, a PCB heater heats the stretched fabricAttorney Docket No.: CRME-0080WOitem that will form an undergarment during a bonding process to another portion of a fabric item that will form an undergarment, as illustrated in FIG. 3.

[0069] Although FIG. 1 illustrates an example fabric stretching device 102, one of ordinary skill in the art will recognize certain modifications to the fabric stretching device 102 without departing from the scope of the subject disclosure. For example, other implementations of the fabric stretching device 102 are described in more detail below with reference to FIGs. 2-9. Additionally, for the purposes of the subject disclosure, a “fabric item” can include fabric that will form a part of a manufactured fabric article. A fabric item can be separate from, coupled to, or integrated with, another fabric item. For example, a fabric item that will form part of a shirt sleeve can be separate from another fabric item that will form another part of the shirt sleeve, and the two fabric items can be bonded together, as illustrated in FIG. 5. As another example, the first and second fabric items can be portions of a larger fabric item, as illustrated in FIG. 3, which shows a fabric item that will form an undergarment.

[0070] By using the techniques and systems described herein, the manufacturing efficiency for manufacturing the fabric article can increase because fabric stretching steps for manufacturing the fabric article can be performed in a repeatable, automated fashion at the fabric stretching device 102. The manufacturing efficiency can also increase based on not having to perform the steps of removing the unnecessary creases. The variation between individual manufactured fabric articles can also be reduced based on the fabric stretching device 102 or the system 100 applying the correct pressure at each of the stretch regions and stretching the fabric item correctly each time.

[0071] FIG. 2 depicts a diagram that illustrates another particular implementation of a system 200 that can include the fabric stretching device 102. The fabric stretching device 102 can include the one or more sections 104, as described above. The one or more sections 104 can include the perforations 106 as described above. The perforations 106 can be coupled to the vacuum assembly. The vacuum assembly can be coupled underneath the one or more sections 104 to apply a suction to hold a fabric item 202 in place on the one or more sections 104. For example, the vacuum can be applied through the perforations 106 of each of the one or more sections 104 to hold the fabric item 202 in place. Although one (1) fabric item 202 is illustrated in FIG. 2, in other examples theAttorney Docket No.: CRME-0080WOfabric item 202 can include multiple fabric items 202, such as two (2), three (3) and the like, that are stretched and stretched together.

[0072] The fabric stretching elements 108A, 108B, 108C, as described above with reference to FIG. 1, can stretch the fabric item 202 in one or more dimensions. The fabric stretching elements 108A, 108B, 108C can be configured to stretch one at a time, simultaneously, or a combination thereof. For example, the fabric stretching elements 108A, 108C can be configured to stretch the fabric item 202 at the same time, followed by stretching by the fabric stretching element 108B. Although the fabric stretching elements 108A, 108B, 108C are illustrated above the fabric item 202 for ease of reference, in some implementations the fabric stretching elements 108A, 108B, 108C are positioned between the fabric item 202 and the sections 104 of the fabric stretching device 102.

[0073] In some implementations, the combination of the sections 104 and the fabric stretching elements 108 can support an entirety of the fabric item 202 during the stretching process, the bonding process, or both. By supporting the entirety of the fabric item 202 during the bonding process, for example, the fabric stretching device 102 can improve the manufacture of fabric articles by allowing even pressure along the portions of the fabric item 202 that will be bonded to another fabric item.

[0074] Although the fabric item 202 in FIG. 2 is illustrated as a sleeve to a shirt, the fabric item 202 can be different in different implementations. For example, the fabric item 202 can be a shirt, pants, shorts, undergarment, collar, waistband, another garment or wearable accessory, or a portion or component thereof. In an example, where the fabric item 202 is a pair of shorts, a ribbon or drawstring can be placed on the fabric item 202 by the placement apparatus 120. As described herein, adhesive can be placed on one or more portions of the fabric item 202. For example, the adhesive can be placed at locations on either side of the ribbon or drawstring. The one or more actuators 116 can rotate one or more of the sections 104 to stretch a portion of the fabric item 202 onto the portions of the fabric item 202 that have adhesive and press those portions of the fabric item 202 together. The stretching of these portions of the fabric item 202 can encapsulate or enclose the ribbon or drawstring that was placed on the fabric item 202.Attorney Docket No.: CRME-0080WO

[0075] In some implementations, once the stretching, bonding, or both is complete, the vacuum assembly can be configured to stop applying a vacuum to one or more of the sections 104 to release corresponding portions of the fabric item 202.

[0076] The fabric stretching device 102 can include the masking template 110, as described above. The masking template 110 can be configured to be complementary to a shape of the first portion of the fabric item 202, the second portion of the fabric item 202, or both. For example, the masking template 110 can have a shape that corresponds to an outline of the shape of the sleeve for the t-shirt which creates an outline that is associated with the fabric item.

[0077] FIG. 3 depicts a diagram that illustrates another particular implementation of a system 300 that can include the fabric stretching device 102. The fabric stretching device 102 can include one or more sections 104. The one or more sections 104 can be configured to releasably hold at least a first portion of a first fabric item 302 onto a surface of the one or more sections 104. For example, the one or more sections 104 can include the first section 104A. The one or more sections 104 can also be configured to releasably hold at least a first portion of a second fabric item 304 onto a surface of the one or more sections. For example, the one or more sections 104 can include the second section 104B and the third section 104C. Although one (1) fabric item 302, 304 is illustrated in FIG. 3, in other examples the fabric item 302, 304 can include multiple fabric items 302, 304, such as two (2), three (3) and the like, that are stretched and bonded together.

[0078] The one or more sections 104 can include the perforations 106 as described above. The perforations 106 can be coupled to the vacuum assembly. The vacuum assembly can be coupled underneath the one or more sections 104 to use airflow to hold a fabric item 302, 304 in place on the one or more sections 104. For example, the vacuum can be applied through the perforations 106 of each of the one or more sections 104 to hold the fabric item 302, 304 in place.

[0079] The fabric stretching device 102 can include one or more spacers disposed within the one or more sections 104. The one or more spacers can be configured to support one or more non-stretch regions of the fabric item 302, 304. The support of the one or moreAttorney Docket No.: CRME-0080WOnon-stretch regions can result in the avoidance of the formation of one or more creases in the fabric item 302, 304.

[0080] The fabric stretching elements 108D, 108E, as described above with reference to FIG. 1, can stretch the fabric item 302 in one or more dimensions. The fabric stretching elements 108D, 108E can be configured to stretch one at a time or simultaneously.Although the fabric stretching elements 108D, 108E are illustrated above the fabric item 302 for ease of reference, in some implementations the fabric stretching elements 108D, 108E are positioned between the fabric item 302 and the sections 104 of the fabric stretching device 102.

[0081] In some implementations, the combination of the sections 104 and the fabric stretching elements 108 can support and entirety of the fabric item 302 during the stretching process, the bonding process, or both. By supporting the entirety of the fabric item 302 during the bonding process, for example, the fabric stretching device 102 can improve the manufacture of fabric articles by allowing even pressure along the portions of the fabric item 302 that will be bonded to respective portions of the second fabric item 304.

[0082] Although the fabric item 302, 304 in FIG. 3 is illustrated as a part of an undergarment, the fabric item 302, 304 can be different in different implementations. For example, the fabric item 302, 304 can be a shirt, pants, shorts, sleeve, collar, waistband, another garment or wearable accessory, or a portion or component thereof. In an example, where the fabric item 302, 304 is a pair of shorts, a ribbon or drawstring can be placed on the fabric item 302, 304 by the placement apparatus 120. As described herein, adhesive can be placed on one or more portions of the fabric item 302, 304. For example, the adhesive can be placed at locations on either side of the ribbon or drawstring. The one or more actuators 116 can rotate one or more of the sections 104 to stretch a portion of the fabric item 302, 304 onto the portions of the fabric item 302, 304 that have adhesive and press those portions of the fabric item 302, 304 together. The stretching of these portions of the fabric item 302, 304 can encapsulate or enclose the ribbon or drawstring that was placed on the fabric item 302, 304.Attorney Docket No.: CRME-0080WO

[0083] In some implementations, once the stretching, bonding, or both is complete, the vacuum assembly can be configured to stop applying a vacuum to one or more of the sections 104 to release corresponding portions of the fabric item 302, 304.

[0084] FIG. 4 is a diagram that illustrates an example 400 of using the fabric stretching device 102. At time 402, the fabric item 202 is placed and held on the fabric stretching device 102, as described in more detail above with reference to FIGs. 1-3. Although one (1) fabric item 202 is illustrated in FIG. 4, in other examples the fabric item 202 can include multiple fabric items 202, such as two (2), three (3) and the like, that are stretched as a group.

[0085] The example 400 also illustrates the fabric stretching elements 108A, 108B, 108C, as described in more detail above with reference to FIGs. 1 and 2. Although the fabric stretching elements 108A, 108B, 108C are illustrated above the fabric item 202 for ease of reference, in some implementations the fabric stretching elements 108A, 108B, 108C are positioned between the fabric item 202 and the sections 104 of the fabric stretching device 102. The fabric stretching elements 108A, 108B, 108C can be configured to stretch the fabric item 202 along one or more stretching directions 140, 142. At time 402, prior to stretching, the fabric item 202 can have a size 408 along the first stretching direction 140 and a size 406 along the second stretching direction 142.

[0086] The fabric stretching elements 108A, 108B, 108C are configured to stretch the fabric item 202 by movement of each fabric stretching element 108A, 108B, 108C relative to the sections 104A, 104B on which the fabric item 202 is placed. After that movement, which results in stretching the fabric item 202, at time 404, the fabric item 202 has a second size 412 along the first stretching direction 140, a second size 410 along the second stretching direction 142, or both.

[0087] FIG. 5 is a diagram that illustrates an example 500 of stretching the first fabric item 202 and bonding the first fabric item 202 to a second fabric item 501. At 502, the first fabric item 202 and second fabric item 501 are placed and held on the fabric stretching device 102, as described above. At 504, a vision system can be configured to image both fabric items 202, 501 to determine respective sizes of the fabric items 202, 501. Although the first fabric item 202 and the second fabric item 501 are illustrated as one fabric item, in other examples the first fabric item 202 and / or the second fabric itemAttorney Docket No.: CRME-0080WO501 can include multiple fabric items, such as two (2), three (3) and the like, that are stretched as a group.

[0088] At 506, one or more fabric stretching elements can be configured to stretch the first fabric item 202 to match the size of the second fabric item 501 along one or more stretching directions, as described above. At 508, the sections of the fabric stretching device 102 holding the first fabric item 202 and the second fabric item 501 can be moved together for the bonding process. As described above, the fabric stretching device 102 can be configured to heat the stretched first fabric item 202 during the bonding process to the second fabric item 501. In some implementations, the entirety of the first fabric item 202 and the second fabric item 501 can be supported by the fabric stretching device 102 during bonding to improve the bonding process.

[0089] At 510, the section that was previously holding the second fabric item 501 can return to its previous position, leaving behind the second fabric item 501, now bonded to the first fabric item 202. In some implementations, the sections of the fabric stretching device 102 can be configured to move separately. Thus, at 512, the section holding the bonded fabric items can be moved to another manufacturing process interface at the same machine, a different machine at the same station, a different machine at a different station, etc. As another example, the section holding the bonded fabric items can be moved so that the bonded fabric items can be picked up (e.g., by a robot) and placed onto a stack or moved to another manufacturing process.

[0090] FIG. 6 illustrates a particular implementation 600 of the fabric stretching device 102 described above. The implementation 600 illustrates a first section 104E configured to releasably hold a first fabric item 202 and a second section 104F configured to releasably hold a second fabric item 501. Each section 104E, 104F includes a vacuum table interface configured to allow the negative pressure provided by the vacuum table to hold the respective fabric item 202, 501. Each section 104E, 104F also includes a heating element such as a PCB heater configured to heat the respective fabric item 202, 501 during a bonding process.

[0091] The implementation 600 also illustrates two fabric stretching elements 108A, 108C positioned between the first fabric item 202 and the first section 104E. In the implementation 600, the fabric stretching element 108A can be fixed, while the fabricAttorney Docket No.: CRME-0080WOstretching element 108C is moveable relative to the first section 104E and the fabric stretching element 108A. The fabric stretching element 108A can be fixed in order to, for example, provided increased friction between the fabric stretching element 108A and the first fabric item 202 when compared to the friction between the first fabric item 202 and the first section 104E. In other implementations, the fabric stretching element 108A can also be moveable relative to the first section 104E.

[0092] The implementation 600 also illustrates a bonding adhesive 602 disposed on a surface of the first fabric item 202. When the first section 104E and the second section 104F are brought together, the first fabric item 202 can be bonded to the second fabric item 501 via the adhesive 602.

[0093] The implementation 600 illustrates two areas of interest 604. The areas of interest 604 can include the stack of the fabric stretching element 108A, 108C, the first fabric item 202, and the adhesive 602. The dimensions of that stack can be monitored (e.g., by the vision system, one or more sensors, etc.) to ensure improved quality of the manufactured fabric article. For example, a vertical dimension of the stack may need to be maintained below a particular threshold to ensure that there is no embossing, folding, creasing, etc. of the first fabric item 202, the second fabric item 501, or both during the bonding process. In an illustrative example, the fabric stretching elements 108A, 108C may have a thickness (vertical height) of 10 thousandths of an inch or less, or another thickness that is determined to be sufficiently small to avoid embossing, creasing, etc., at the areas of interest 604 for the particular fabric items 202, 501 being bonded.

[0094] FIG. 7 illustrates another particular implementation 700 of the fabric stretching device 102 described above. The implementation 700 illustrates a section 104G configured to releasably hold a first fabric item 202. The section 104G includes, for example, a vacuum table interface configured to allow the negative pressure provided by the vacuum table to hold the fabric item 202, as well as a heating element such as a PCB heater configured to heat the fabric item 202 during a bonding process.

[0095] FIG. 7 illustrates the section 104G in a first wedge section 702 and a second wedge section 704. Between the two wedge sections 702, 704 is the fabric stretching element 108G. The fabric stretching element 108G is configured to move between a first state 706 and a second state 708. In the first state 706, the fabric stretching element 108GAttorney Docket No.: CRME-0080WOis situated between the first wedge section 702 and the second wedge section 704. In the second state 708, a portion 710 of the fabric stretching element 108G is situated outside a common edge 712 of the first wedge section 702 and the second wedge section 704.

[0096] As the fabric stretching element 108G moves from the first state 706 to the second state 708, the fabric stretching element 108G translates in a y-axis relative to the section 104G. As the fabric item 202 is held in place at the section 104G, the fabric is stretched in an x-axis by the translation of the fabric stretching element 108G pushing the wedge sections 704, 706 away from each other. The geometry of the first wedge section 702, the second wedge section 704, and the fabric stretching element 108G provided a solid bonding surface for the fabric item 202 after stretching and during a bonding process.

[0097] FIG. 8 illustrates another particular implementation 800 of the fabric stretching device 102 described above. The implementation 800 illustrates a fabric stretching element 108H that is substantially cylindrical. The fabric stretching element 108H is configured to move (e.g., rotate) along a rotational axis 802 and also to move along a translational axis 804. The translational axis 804, in some implementations, is relative to a section 104 of the fabric stretching device 102 of FIG. 1. The fabric stretching element 108H is configured to stretch the first fabric item 806 according to a ratio between a first movement along the rotational axis 802 and a second movement along the translational axis 804. For example, the fabric stretching element 108H may control movement of a spool or roll of fabric including the first fabric item 806, and may control the amount of stretching of the first fabric item 806 as it is unrolled by restricting an amount of rotation of the spool per unit of distance travelled along the translational axis 804, such as onto a section 104 of a fabric stretching device 102.

[0098] FIG. 9 is a diagram that illustrates a flow chart of an example of a method 900 for manufacturing a fabric article. The method 900 can be performed by a fabric stretching device, such as the fabric stretching device 102 of FIGs. 1-8.

[0099] The method 900 includes, at block 902, stretching a first fabric item, that is mounted to and supported by a surface of a first section of a fabric stretching device, by movement of a fabric stretching element relative to the first section, wherein a first portion of the first fabric item is mounted on a surface of the fabric stretching element. For example, the fabric stretching element(s) 108 of FIG. 1 can stretch a first fabric itemAttorney Docket No.: CRME-0080WO(e.g., the first fabric item 202 of FIG. 2, the first fabric item 302 of FIG. 3, etc.) that is mounted to and supported by a surface of a first section 104A of the fabric stretching device 102. The stretching occurs by movement of the fabric stretching element(s) 108 relative to the first section 104A. A first portion of the first fabric item is mounted on a surface of the fabric stretching element(s) 108.

[0100] The method 900 also includes, at block 904, bonding the stretched first fabric item to a second fabric item via a heating element configured to heat the stretched first fabric item during bonding. For example, the fabric stretching device 102 can be configured to bond the stretched first fabric item to a second fabric item (e.g., the second fabric item 304 of FIG. 3, the second fabric item 501 of FIG. 5, etc.) via a PCB heater configured to heat the stretched first fabric item during bonding.

[0101] In some aspects, the method 900 can optionally include, at block 906, determining a first size of the first fabric item along a first plurality of dimensions and a second size of the second fabric item along a second plurality of dimensions. For example, a vision system of the fabric stretching device 102 of FIG. 1 can be configured to determine a first size of the first fabric item and a second size of the second fabric item, as described in more detail above with reference to FIG. 5.

[0102] By using the techniques and systems described herein, the manufacturing efficiency for manufacturing the fabric item can increase because multiple operating steps for manufacturing the fabric item can be performed at one location, such as at the fabric stretching device 102. The variation between individual fabric items can be reduced based on the fabric stretching device 102 applying the correct pressure and heat at each of the stretch regions and stretching the fabric item correctly each time.

[0103] FIG. 10 is a diagram that illustrates a particular implementation of a placement apparatus 1002. The placement apparatus 1002 can be the placement apparatus 120 as described in FIG. 1.

[0104] The placement apparatus 1002 includes an articulated arm 1006 attached to a gripper 1004. The gripper 1004 includes one or more sectors 1008. Each of the sectors includes perforations 1006 coupled to a vacuum assembly. The vacuum assembly can be coupled underneath the one or more sectors 1008 to apply a suction to hold the portionsAttorney Docket No.: CRME-0080WOof the fabric item in place. The one or more sectors 1008 and the vacuum assembly can be configured such that a vacuum applied through the perforations 1006 of an individual one of the one or more sectors 1008, such as a first sector 1008A, can be controlled independently of a vacuum applied through the perforations 1006 of another one of the one or more sectors 1008, such as the second sector 1008B. For example, a vacuum can be applied through the perforations 1006 of the first sector 1008A while no vacuum is applied through the perforations 1006 of a tenth sector 1008J. In another example, a vacuum can be applied through the perforations 1006 of any one or more of the first sector 1008A, the second sector 1008B, the third sector 1008C, the fourth sector 1008D, the fifth sector 1008E. the sixth sector 1008F, the seventh sector 1008G, the eight sector 1008H, the ninth sector 10081, or the tenth sector 1008J while no vacuum is applied through the perforations 1006 of any one or more of the other sectors 1008. Additionally, a vacuum can apply through the perforations 1006 of at least one of the one or more sectors 1008 at a first strength, while the vacuum applied through the perforations 1006 of one or more other sectors 1008 is at a second strength, where the first strength and the second strength are different.

[0105] In some embodiments, the individual sectors 1008 can selectively apply pressure, heat, or both to specific areas of the fabric item. Each sector 1008 can include an actuator to ensure even pressure distribution when stretching the first and second fabric portions together. Additionally, the heating element for each sector 1008 includes a Printed Circuit Board (PCB), enabling uniform heat distribution.

[0106] For example, the gripper 1004 positions the first fabric item (e.g., pocket, collar, sleeve, gusset) on the second fabric item (e.g., shirt, garment). The gripper 1004 can then activate specific sectors 1008 to apply both pressure and heat to that first fabric item, thereby stretching it securely to the second fabric item. To illustrate, the gripper 1004 can activate sectors 1008C, 1008D, 1008E, and 1008F to deliver both pressure and heat, while the remaining sectors 1008A, 1008B, 1008G, 1008H, 10081, and 1008J remain inactive.

[0107] The gripper 1004 can be manipulated by the articulated arm 1006 to perform operations on the fabric item. For example, the gripper 1004 can be configured to retrieve and place the first portion of the fabric item on the fabric stretching device. ContinuingAttorney Docket No.: CRME-0080WOthis example, the placement apparatus 1002 can further include an alignment sensor, as described in FIG. 10. The alignment sensor can be configured to generate sensor data indicating a position of the fabric item on the fabric stretching device. The placement apparatus 1002 can be further configured to, based on the sensor data, reposition, using the gripper 1004, the fabric item on the fabric stretching device.

[0108] By using the techniques and systems described herein, the placement apparatus 1002 leverages the described techniques and systems to deliver several key advantages for precise fabric stretching applications. These advantages work in concert to create a highly effective and versatile system. The gripper 1004 employs a modular design with individual sectors 1008. Each sector 1008 integrates dedicated actuators and PCB heating elements. This modularity allows for the selective activation of specific sectors 1008, enabling targeted pressure and heat application to precise areas of the fabric. This approach optimizes the stretching process by focusing pressure and heat where needed, while minimizing potential damage to the fabric. Integrated actuators within each sector 1008 ensure consistent pressure distribution across the entire stretching area. This uniformity minimizes the risk of fabric deformation or inconsistencies in seam quality, leading to reliable and robust stretch formation. Further enhancing the capabilities of the placement apparatus 1002, PCB heating elements offer precise temperature control within each sector 1008. This level of control allows for tailoring the heat application to the specific requirements of different fabric types and stretching techniques. By precisely controlling the heat, the placement apparatus 1002 ensures optimal results without compromising material integrity. This combination of modularity, precise pressure control, and targeted heating enhances the versatility of the placement apparatus 1002. This versatility allows the system 1000 to handle a wider range of fabric types and applications. By adapting to various garment construction needs, the system 1000 becomes a valuable tool for a broader range of manufacturing processes.

[0109] Particular aspects of the disclosure are described below in sets of interrelated Examples:

[0110] According to Example 1, a fabric stretching device includes a first section configured to releasably hold a first fabric item on a surface of the first section. The fabric stretching device also includes a fabric stretching element configured to releasably hold aAttorney Docket No.: CRME-0080WOfirst portion of the first fabric item and configured to stretch the first fabric item by movement of the fabric stretching element relative to the first section. The fabric stretching device also includes a heating element configured to heat the stretched first fabric item during a bonding process to a second fabric item.

[0111] Example 2 includes the fabric stretching device of Example 1, wherein the fabric stretching element is configured to move along an X-Y -Theta planar space relative to the first section.

[0112] Example 3 includes the fabric stretching device of Example 2, wherein the fabric stretching element is configured to stretch the first fabric item in a first dimension in the X-Y-Theta planar space.

[0113] Example 4 includes the fabric stretching device of Example 3, wherein the fabric stretching element is configured to stretch the first fabric item in a second dimension in the X-Y-Theta planar space.

[0114] Example 5 includes the fabric stretching device of any of Examples 1 to 4, wherein the fabric stretching element comprises a plate moveably coupled between the first portion of the first fabric item and the first section.

[0115] Example 6 includes the fabric stretching device of Example 5, wherein the plate includes a plurality of holes in the plate, the plurality of holes configured to allow a vacuum to pass through the plate.

[0116] Example 7 includes the fabric stretching device of Example 5 or Example 6, wherein the plate is formed with dimensions configured to avoid embossing during the bonding process.

[0117] Example 8 includes the fabric stretching device of any of Examples 5 to 7, wherein the plate comprises a substantially flat plate.

[0118] Example 9 includes the fabric stretching device of any of Examples 5 to 8, wherein the plate is substantially rectangular.

[0119] Example 10 includes the fabric stretching device of any of Examples 5 to 8, wherein the first section comprises a first wedge section and a second wedge section. TheAttorney Docket No.: CRME-0080WOplate is configured to move between a first state and a second state. In the first state, the plate is situated between the first wedge section and the second wedge section. In the second state, a portion of the plate is situated outside a common edge of the first wedge section and the second wedge section.

[0120] Example 11 includes the fabric stretching device of any of Examples 1 to 4, wherein the fabric stretching element is substantially cylindrical.

[0121] Example 12 includes the fabric stretching device of Example 11, wherein the fabric stretching element is configured to move along a rotational axis and a translational axis relative to the first section.

[0122] Example 13 includes the fabric stretching device of Example 12, wherein the fabric stretching element is configured to stretch the first fabric item according to a ratio between a first movement along the rotational axis and a second movement along the translational axis.

[0123] Example 14 includes the fabric stretching device of any of Examples 1 to 13, wherein the fabric stretching element comprises a plurality of fabric stretching elements configured to stretch the first fabric item by movement of the plurality of fabric stretching elements relative to one another.

[0124] Example 15 includes the fabric stretching device of any of Examples 1 to 14 and further includes a vacuum table coupled to the first section, and wherein the first section is configured to releasably hold the first fabric item via negative pressure provided by the vacuum table.

[0125] Example 16 includes the fabric stretching device of any of Examples 1 to 15, wherein the first section comprises a mechanical coupling mechanism configured to releasably hold the first fabric item.

[0126] Example 17 includes the fabric stretching device of any of Examples 1 to 16, wherein the first fabric item is sized at one or more dimensions less than one or more target dimensions prior to stretching.Attorney Docket No.: CRME-0080WO

[0127] Example 18 includes the fabric stretching device of any of Examples 1 to 17, wherein the heating element comprises a printed circuit board (PCB) heater.

[0128] Example 19 includes the fabric stretching device of any of Examples 1 to 18 and further includes a vision system configured to determine a first size of the first fabric item along a first plurality of dimensions and a second size of the second fabric item along a second plurality of dimensions.

[0129] Example 20 includes the fabric stretching device of Example 19, wherein the fabric stretching element is configured to stretch the first fabric item along one or more of the first plurality of dimensions so that the first size substantially matches the second size prior to the bonding process.

[0130] According to Example 21, a method of manufacturing a fabric article includes stretching a first fabric item, that is mounted to and supported by a surface of a first section of a fabric stretching device, by movement of a fabric stretching element relative to the first section. A first portion of the first fabric item is mounted on a surface of the fabric stretching element. The method also includes bonding the stretched first fabric item to a second fabric item via a heating element configured to heat the stretched first fabric item during bonding.

[0131] Example 22 includes the method of Example 21, wherein stretching the first fabric item by movement of the fabric stretching element relative to the first section comprises moving the fabric stretching element along an X-Y -Theta planar space relative to the first section.

[0132] Example 23 includes the method of Example 21 or Example 22, wherein stretching the first fabric item by movement of the fabric stretching element relative to the first section comprises moving the fabric stretching element along a rotational axis and a translational axis relative to the first section.

[0133] Example 24 includes the method of any of Examples 21 to 23 and further includes determining a first size of the first fabric item along a first plurality of dimensions and a second size of the second fabric item along a second plurality of dimensions.Attorney Docket No.: CRME-0080WO

[0134] Example 25 includes the method of Example 24, wherein stretching the first fabric item by movement of the fabric stretching element relative to the first section comprises stretching the first fabric item along one or more of the first plurality of dimensions so that the first size substantially matches the second size prior to bonding.

[0135] According to Example 26, a system includes a fabric stretching device and a placement apparatus. The fabric stretching device includes a first section configured to releasably hold a first fabric item on a surface of the first section. The fabric stretching device also includes a fabric stretching element configured to releasably hold a first portion of the first fabric item and configured to stretch the first fabric item by movement of the fabric stretching element relative to the first section. The fabric stretching device also includes a heating element configured to heat the stretched first fabric item during a bonding process to a second fabric item. The placement apparatus includes one or more sections configured to releasably hold and place the first fabric item, the second fabric item, or both onto the fabric stretching device.

[0136] Example 27 includes the system of Example 26, wherein the fabric stretching element is configured to move along an X-Y -Theta planar space relative to the first section and stretch the first fabric item in one or more dimensions in the X-Y -Theta planar space.

[0137] Example 28 includes the system of Example 26 or Example 27, wherein the fabric stretching element comprises a plate moveably coupled between the first fabric item and the first section.

[0138] Example 29 includes the system of any of Examples 26 to 28 and further includes a vacuum table coupled to the first section, and wherein the first section is configured to releasably hold the first fabric item via negative pressure provided by the vacuum table.

[0139] Example 30 includes the system of any of Examples 26 to 29, wherein the fabric stretching element is substantially cylindrical. The fabric stretching element is configured to move along a rotational axis and a translational axis relative to the first section. The fabric stretching element is configured to stretch the first fabric item according to a ratio between a first movement along the rotational axis and a second movement along the translational axis.Attorney Docket No.: CRME-0080WO

[0140] The illustrations of the examples described herein are intended to provide a general understanding of the structure of the various implementations. The illustrations are not intended to serve as a complete description of all of the elements and features of apparatus and systems that utilize the structures or methods described herein. Many other implementations can be apparent to those of skill in the art upon reviewing the disclosure. Other implementations can be utilized and derived from the disclosure, such that structural and logical substitutions and changes can be made without departing from the scope of the disclosure. For example, method operations can be performed in a different order than shown in the figures or one or more method operations can be omitted.Accordingly, the disclosure and the figures are to be regarded as illustrative rather than restrictive.

[0141] Moreover, although specific examples have been illustrated and described herein, it should be appreciated that any subsequent arrangement designed to achieve the same or similar results can be substituted for the specific implementations shown. This disclosure is intended to cover any and all subsequent adaptations or variations of various implementations. Combinations of the above implementations, and other implementations not specifically described herein, will be apparent to those of skill in the art upon reviewing the description.

[0142] The Abstract of the Disclosure is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims. In addition, in the foregoing Detailed Description, various features can be grouped together or described in a single implementation for the purpose of streamlining the disclosure. Examples described above illustrate but do not limit the disclosure. It should also be understood that numerous modifications and variations are possible in accordance with the principles of the present disclosure. As the following claims reflect, the claimed subject matter can be directed to less than all of the features of any of the disclosed examples. Accordingly, the scope of the disclosure is defined by the following claims and their equivalents.

Claims

Attorney Docket No.: CRME-0080WOWHAT IS CLAIMED IS:

1. A fabric stretching device comprising:a first section configured to releasably hold a first fabric item on a surface of the first section;a fabric stretching element configured to releasably hold a first portion of the first fabric item and configured to stretch the first fabric item by movement of the fabric stretching element relative to the first section; and a heating element configured to heat the stretched first fabric item during a bonding process to a second fabric item.

2. The fabric stretching device of claim 1, wherein the fabric stretching element is configured to move along an X-Y -Theta planar space relative to the first section.

3. The fabric stretching device of claim 2, wherein the fabric stretching element is configured to stretch the first fabric item in a first dimension in the X-Y-Theta planar space.

4. The fabric stretching device of claim 3, wherein the fabric stretching element is configured to stretch the first fabric item in a second dimension in the X-Y-Theta planar space.

5. The fabric stretching device of claim 1, wherein the fabric stretching element comprises a plate moveably coupled between the first portion of the first fabric item and the first section.

6. The fabric stretching device of claim 5, wherein the plate includes a plurality of holes in the plate, the plurality of holes configured to allow a vacuum to pass through the plate.

7. The fabric stretching device of claim 5, wherein the plate is formed with dimensions configured to avoid embossing during the bonding process.Attorney Docket No.: CRME-0080WO8. The fabric stretching device of claim 5, wherein the plate comprises a substantially flat plate.

9. The fabric stretching device of claim 5, wherein the plate is substantially rectangular.

10. The fabric stretching device of claim 5, wherein:the first section comprises a first wedge section and a second wedge section; andthe plate is configured to move between a first state and a second state, wherein:in the first state, the plate is situated between the first wedge section and the second wedge section; andin the second state, a portion of the plate is situated outside a common edge of the first wedge section and the second wedge section.

11. The fabric stretching device of claim 1, wherein the fabric stretching element comprises a plurality of fabric stretching elements configured to stretch the first fabric item by movement of the plurality of fabric stretching elements relative to one another.

12. The fabric stretching device of claim 1, further comprising a vacuum table coupled to the first section, and wherein the first section is configured to releasably hold the first fabric item via negative pressure provided by the vacuum table.

13. The fabric stretching device of claim 1, wherein the first section comprises a mechanical coupling mechanism configured to releasably hold the first fabric item.Attorney Docket No.: CRME-0080WO14. The fabric stretching device of claim 1, wherein the first fabric item is sized at one or more dimensions less than one or more target dimensions prior to stretching.

15. The fabric stretching device of claim 1, wherein the heating element comprises a printed circuit board (PCB) heater.

16. The fabric stretching device of claim 1, wherein the fabric stretching element is substantially cylindrical.

17. The fabric stretching device of claim 16, wherein the fabric stretching element is configured to move along a rotational axis and a translational axis relative to the first section.

18. The fabric stretching device of claim 17, wherein the fabric stretching element is configured to stretch the first fabric item according to a ratio between a first movement along the rotational axis and a second movement along the translational axis.

19. The fabric stretching device of claim 1, further comprising a vision system configured to determine a first size of the first fabric item along a first plurality of dimensions and a second size of the second fabric item along a second plurality of dimensions.

20. The fabric stretching device of claim 19, wherein the fabric stretching element is configured to stretch the first fabric item along one or more of the first plurality of dimensions so that the first size substantially matches the second size prior to the bonding process.

21. A method of manufacturing a fabric article, the method comprising: stretching a first fabric item, that is mounted to and supported by a surface of a first section of a fabric stretching device, by movement of a fabric stretching element relative to the first section, wherein a first portion of theAttorney Docket No.: CRME-0080WOfirst fabric item is mounted on a surface of the fabric stretching element; andbonding the stretched first fabric item to a second fabric item via a heating element configured to heat the stretched first fabric item during bonding.

22. The method of claim 21, wherein stretching the first fabric item by movement of the fabric stretching element relative to the first section comprises moving the fabric stretching element along an X-Y -Theta planar space relative to the first section.

23. The method of claim 21, wherein stretching the first fabric item by movement of the fabric stretching element relative to the first section comprises moving the fabric stretching element along a rotational axis and a translational axis relative to the first section.

24. The method of claim 21, further comprising determining a first size of the first fabric item along a first plurality of dimensions and a second size of the second fabric item along a second plurality of dimensions.

25. The method of claim 24, wherein stretching the first fabric item by movement of the fabric stretching element relative to the first section comprises stretching the first fabric item along one or more of the first plurality of dimensions so that the first size substantially matches the second size prior to bonding.Attorney Docket No.: CRME-0080WO26. A system comprising:a fabric stretching device comprising:a first section configured to releasably hold a first fabric item on a surface of the first section;a fabric stretching element configured to releasably hold a first portion of the first fabric item and configured to stretch the first fabric item by movement of the fabric stretching element relative to the first section; anda heating element configured to heat the stretched first fabric item during a bonding process to a second fabric item; anda placement apparatus comprising one or more sections configured to releasably hold and place the first fabric item, the second fabric item, or both onto the fabric stretching device.

27. The system of claim 26, wherein the fabric stretching element is configured to move along an X-Y -Theta planar space relative to the first section and stretch the first fabric item in one or more dimensions in the X- Y -Theta planar space.

28. The system of claim 26, wherein the fabric stretching element comprises a plate moveably coupled between the first fabric item and the first section.

29. The system of claim 26, further comprising a vacuum table coupled to the first section, and wherein the first section is configured to releasably hold the first fabric item via negative pressure provided by the vacuum table.

30. The system of claim 26, wherein:the fabric stretching element is substantially cylindrical;the fabric stretching element is configured to move along a rotational axis and a translational axis relative to the first section; andthe fabric stretching element is configured to stretch the first fabric item according to a ratio between a first movement along the rotational axis and a second movement along the translational axis.

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