Commitment to “seam quality”is poised to enter a new era with JUKI’s next-generation sewing system. The change is driven by digitalization. Until recently, sewing machines have been adjusted by human operators based on personal hunches and experience.
Now, with JUKI’s digital sewing system DDL-9000C, sewing machine adjustments are fully digitalized. The settings can be reproduced with total accuracy to perfectly suit the materials being sewn.
Vertically- and horizontally-driven digital feed mechanism
Thanks to the world’s first vertically-driven digital feed mechanism, the feed dog height can be adjusted with ease according to the material fabric of product to be sewn, thereby improving seam quality. Thanks to this digital feed mechanism, thread trimming is carried out with the feed dog lowered in the case the shorter-thread remaining thread trimming function is enabled.
As a result, the clearance provided between the throat plate and the material is eliminated, thereby stabilizing the length of thread remaining after thread trimming.
The feed dog does not protrude the top surface of throat plate when the sewing machine stops with its needle bar up, thereby facilitating placement/removal of the material on/from the top surface of throat plate and preventing the material from being damaged by the feed dog.
Various kinds of feed locus can be selected.
Digitalized vertically- and horizontally-driven feed mechanism allows easy adjustment of settings such as the feed locus only on the operation panel according to the material to be sewn.
Digital functions which accentuate excellent “seam” quality
Ⅰ. Adoption of the needle-thread active tension – Needle tension is digitally controlled
Needle thread tension which matches sewing conditions given can be set on the operation panel and stored in memory. The needle thread tension adjustment needs experience. However, for this the DDL-900C, thread tension data stored in memory is reproducible, thereby reducing the setup time when the product to be sewn is changed. Example: Needle-thread active tension demonstrates its effectiveness in the topstitching process. For welting shoulders of a difficult-to-sew material, uniform stitches can be produced continuously by appropriately changing the sewing conditions even if the right and left material fabric differ in texture grain.
Ⅱ. Active presser foot pressure mechanism – The presser foot pressure is digitally controlled
The DDL-9000C has a digital control system that controls the presser foot pressure. Under the automatic mode, the multi-layered section detection function detects changes in material thickness to increase/decrease the presser foot pressure accordingly. Under the manual mode, the presser foot pressure control function is assigned to the hand switch to enable operation with the hand switch.
Ⅲ. Needle thread clamp
The device clamps the needle thread and draws it under the material at the beginning of sewing. The needle thread clamp device works to reduce the size of thread tangling in on the wrong side of the material. This expands the area around the needle entry, thereby allowing the use of various gauge components.
Management of sewing performance and the DDL-9000C sewing machine by the utilization of IoT (Internet of Things)
Management, browsing and editing of data can be carried out on the application software
Data on the DDL-9000C sewing machine adjustments made according to the product to be sewn can be transferred to a commercially-available Android tablet in contactless mode. This enables quick check for uniform settings as well as confirmation of conditions of sewing machines in a sewing line, thereby facilitating setup changes.
The operation panel is also provided as standard with a USB port. Data management and software update can be carried out with ease using a USB thumb drive. Data items of sewing can be numerically managed to ensure “stable quality” and “reduction in time required for setup changes”. Quantified sewing data can be externally taken from the sewing machine using an Android tablet or USB thumb drive.
LED Light on the DDL-9000C
The LED light illuminates the needle entry area in the just-under direction from the right and left sides of the needle bar. In comparison with the single-direction illumination, this LED light helps the operator carry out sewing more easily. Illuminance of the LED light is adjustable in five levels. It can also be used as an auxiliary lamp for working.
|Type||Full Digital Type||Digital Type|
|Lubrication||Semi-dry||Minute-quantity lubrication||Semi-dry||Minute-quantity lubrication|
|Max. sewing speed||5,000sti/min*1||4,500sti/min*2||5,000sti/min*1||4,500sti/min*2|
|Hand switch||Provided as standard (At the time of shipment: Hand switches are assigned respectively with the touch-back switch function and the one-touch changeover switch function.)|
|Max. stitch length||5mm|
|Thread trimming method||Double-edge rotary system|
|Needle bar stroke||30.7mm||35.0mm||30.7mm||35.0mm|
|Feed dog height||0.8mm||1.2mm||0.8mm||1.2mm|
|Needle thread tension||Active tension||Spring type|
|Presser foot pressure||Electronic control||Spring type|
|Lift of the presser foot||By hand: 5.5mm, By knee: 15mm Auto: 1st stage 5.0 mm （*0.1～8.5mm）, 2nd stage 8.5 mm （*8.5mm～13.5mm） * Adjustable on the operation panel|
|Bobbin thread winder||Built in the top of machine head (provided with the bobbin thread retaining plate)|
|Lubricating oil||JUKI New Defrix Oil No. 1 or JUKI CORPORATION GENUINE OIL 7 (equivalent to ISO VG7)|
|Size of bed||517×178mm（distance from needle to machine arm：303mm）|
|Machine head drive||Compact AC servomotor (400W) that is directly connected to the main shaft (direct-drive system)|
|Net weight||Machine head： 40.5kg（with AK-154）|
＊”sti/min” stands for “Stitches per Minute.”
＊1 Stitch length of 4.00 mm or less: 5,000 sti/min; Stitch length of 4,05 – 5.00 mm: 4,000 sti/min
＊2 Stitch length of 4.00 or less: 4,500sti/min; Stitch length of 4.05 – 5.00mm: 4,000sti/min
＊3 Diﬀers on a destination-by-destination basis