Patent Application
20060272565
The present invention relates generally to embroidery machinery and more specifically to an apparatus for securing patches (badges) in place in a machine without the need for adhesive chemicals or adhesive backings.
Though modem machinery has largely automated the process of embroidering clothing and patches, current embroidery methods still require a considerable amount of user input. This not only increases the time requirement for the embroidery process but also leaves opportunities for human error and increased equipment maintenance. In addition, current embroidery methods involve the use of adhesive chemicals, adding to the cost of production and exposing some users to potential harmful chemicals.
Some machines are capable of holding multiple hoops and embroidering several patches at once. In addition, the size and shape of the hoop may also vary. However, the operation of these different machines works along the same lines.
A pattern to be embroidered must first be created by a digitizer. A digitizer is a person who by means of a computer converts a design to stitches in a format that the embroidery machine can understand. The design to be digitized can be a computer image file of various formats, or it can be on printed paper or in the imagination of the digitizer. Once the digitized design is completed, the operator of the embroidery machine uploads the digitized design into the embroidery machine, in some cases the design is transferred to the embroidery machine little by little through a network cable during the stitching process.
The pattern to be embroidered onto the patch is stored electronically in a component of the embroidery machine. In preparation for embroidering on a blank patch, the first step after inserting the hoop into the machine is to have the machine make a “running stitch” outline in the shape of the patch on the backing material which is secured to the hoop, as shown in
After the embroidery machine makes the running stitch outline in the backing material, the embroidery machine must be stopped. The user then applies an adhesive spray 302 to the backing material or to the back of the blank patch and places the blank patch (not shown) within the outline of the running stitch 301. The embroidery machine is then restarted, and the automated embroidery process continues until the embroidered pattern in finished. After the embroidery design is finished, the patch is simply torn away from the backing material, often taking some of the material with it.
As an alternative to the tear away backing and spray-on adhesive, a self-adhesive, tear-away paper backing can be used in the hoop to secure the blank patch in place. However, the general process is virtually the same. In this case, the backing is removed to expose the adhesive, either before or after the running stitch has been made by the machine and the blank patch is placed onto the exposed adhesive paper within the running stitch outline.
The current approach described above has several disadvantages. Because the running stitch must be made in the backing material before the blank patch can be put into place, the machine has to be started and then stopped while the adhesive is applied (or backing pealed away to expose self-adhesive paper). These steps take up to a minute or two per patch, which can add up to significant time costs when producing large batches.
Though aligning the patch within the outline of the running stitch is fairly simple, there is the possibility of human error, resulting in misalignment of the embroidery design on the patch. The adhesive itself may also be insufficient to prevent the patch from shifting during the embroidery process.
The spray-on adhesive can also interfere with the operation of the embroidering machine as the adhesive has a tendency to build up on the sewing needles and can even cause threads to break, requiring the machine to be stopped and the needles rethreaded. The cumulative cost of the spray-on adhesive or self-adhesive paper also contributes considerably to the cost of production.
Therefore, it would be desirable to have a method for properly securing patches in the embroidering machine without the need for making a running stitch and then stopping the machine and without the need for applying adhesive chemicals or expensive self-adhesive backings to secure the patch and reduce the likelihood of human error in the placement of the patch.
The present invention provides a placement holder for embroidering patches. The placement holder fits inside an embroidery hoop for use in an automated embroidery machine and contains a cutout section in the shape of the patch. The patch is placed inside the cutout section of the holder, which aligns the patch with the needles of the embroidery machine. The placement holder allows the patch to be properly aligned without the need for making a running stitch and securing the patch within the bounds of the running stitch with adhesives.
The patch holder may include marking to indicate proper alignment within the embroidery hoop. Alternatively, the patch holder may have a locking mechanism to hold it in place within the hoop or be manufactured as part of the hoop.
Patches are held in place within the cutout section of the patch holder by locking stitches that secure the patch to a backing material placed within the embroidery hoop. These locking stitches are incorporated into the embroidery design and are made first before the rest of the design is stitched into the patch. The locking stitches can scale with the embroidery design, thus enabling the patch holder to be used with any embroidery manufacturer's digitizing software and design format.
The patch holder can be used with both industrial and home machines, and multiple patch holders can be used on multi-hoop embroidery machines, allowing embroidery on multiple patches simultaneously. In addition, multiple patches can be incorporated into a single embroidery patch holder allowing the embroidery machine to stitch out several patches within a single hoop.
The novel features believed characteristic of the invention are set forth in the appended claims. The invention itself, however, as well as a preferred mode of use, further objects and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying drawings, wherein:
The patch placement holder 400 also has line markings 410, which help the user properly align the holder with the raised grid on the embroidery hoop, as shown in
The digitized design has several “lock stitches” placed underneath the design that secure the patch to the backing material before the design is stitched out. These lock stitches do not require a “stop” command as traditional techniques require. Once the patch is placed in the holder and the embroidery starts, there is no need to stop until the embroidery designed is finished. There is no need to make a running stitch or apply adhesive, as the holder 400 provides the proper positioning and alignment of the patch.
In addition to securing the patch using locking stitches, the embroidery patch holder can incorporate a patch holding lock to further secure the patch to the embroidery patch holder. This might be necessary when stitching out several patches within a single hoop or when patches are warped or curled. The patch locks are simply pieces of metal or like material mounted to the embroidery patch holder. After the blank patch is placed in the embroidery patch holder, the locks are slid over the edge of the patch (approximately 1-10 mm of the patch edge), securing the blank patch against the backing material before the locking stitches are made.
Another securing mechanism for a warped or curled blank patch or multiple patches while embroidery takes place comprises a second layer of material (a securing plate) that is placed over the patch holder in the embroidery hoop. Similar to the patch holder, the securing plate has a cutout in the shape of the patch. However, the securing plate has a smaller cutout than the patch holder, so when it is placed on top of the patch and patch holder it overlaps the edge of the patch by 1 mm to 3 mm, securing the patch to the backing material. Very small powerful magnets are embedded within the patch holder and securing plate, thus sandwiching the patches and securing them so they do not move during the embroidery process. This is quick and easy and can increase production with fewer moving parts. This alternate method can even eliminate the need for the lock stitches. However, lock stitches provide additional stability that is preferred.
The patch holder can be made from a variety of inexpensive materials such as plastic, PVC, PVC foamboard, Styrene, Celtec®, Polycarve™, acrylic, pressed balsa wood, processed wood materials such as Formica® or Masonite®, plexiglass, Lexan®, rigid textile materials, metal, rubber or similar materials. In the preferred embodiment of the invention, the thickness of the holder is approximately equal to that of the patch (1 mm to 5 mm) to prevent snagging by the embroidery needles.
The present invention offers significant time savings, particularly in large batch production. It can be used with both industrial and home embroidery machines. Because the invention completely mechanizes the production process, operators do not have to take time to align each badge with the outline running stitch. The placement holder also takes the guess work out of badge placement, thus reducing the opportunity for human error in aligning the patch. Thus there are fewer defective badges due to improper badge placement.
Because of the quick and easy placement of patches using the placement holder, the present invention allows for the efficient use of multiple hoops per embroidery head. With multiple hoops, one hoop can be placed in the machine and run while the other is being set up, with no need to monitor the running hoop. When the embroidery design is complete the operator quickly removes one hoop and attaches the next hoop, thus simplifying the process.
The present invention also reduces the cost of digitizing the design. The design digitizing takes less time because the digitizer does not need to know the shape and size of the blank badge and does not need to program the outline running stitch into the design. Without these constraints, a single digitized design can easily be scaled to accommodate a wide range of size and shape of patches. The only thing that has to be incorporated into the digitized embroidery design is the placement of the lock stitches that initially secure the patch in place on the backing material. However, these lock stitches are incorporated under particular parts of the design, and as such, scale with the design according to the size of the patch in question. Therefore, the present invention can be used with any embroidery manufacturer's digitizing software or design format
Another advantage of the present invention is the elimination of adhesive chemicals for securing the patches in place. This significantly reduces the cost of embroidering patches. Currently, adhesive spray retails for about $15.00 per 18 oz. can and self-adhesive backings sell for about $0.30 per square foot, verses the cost of the traditional tear-away backing used with the present invention, which costs about $0.08 per square foot. In addition to this direct cost savings, the invention also reduces the time and cost associated with needle replacements due to needles being clogged with chemical adhesive. Along those same lines, there is additional time saving due to fewer interruptions from thread breaks because the needles run cooler and cleaner without chemicals.
Since most of the adhesive sprays are also highly flammable, users must comply with several federal, state and local regulations regarding the shipment, storage and handling of these chemicals. The present invention allows businesses and operators to completely avoid this inconvenience and expense.
In addition to significant cost reduction, there are potential health benefits from avoiding chemicals that could be a cause of health problems. The present invention does not leave a sticky residue on badge, needles, employees, or equipment. With the level of concern regarding environmental pollutants and spiraling health costs concerns, any elimination of unnecessary chemicals from the workplace is welcome.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention, the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated. It will be understood by one of ordinary skill in the art that numerous variations will be possible to the disclosed embodiments without going outside the scope of the invention as disclosed in the claims.
