MOL-254

Automatic 2-needle Belt-loop Attaching Machine

The number of stitches and size of bartacking

The number of stitches to sew a belt-loop can be switched between; 28-, 36- and 42-stitches and the bartacking size can be easily changed through the operating panel. What's more, the user can create his/her own original sewing patterns in addition to the standard ones using JUKI's PGM-20 programming software developed for computer-controlled sewing machines.

The changeover of cutting method between cross-cutting and straight cutting

The applicable loop width for the cross-cutting device is increased. In this model, both the cross-cutting device and the straight-cutting device can now cut the loop up to 20mm in width.

The machine time is 1.2 seconds per belt loop (with 28 stitches)

The new machine head specifically developed for belt-loop attaching machines runs at a maximum sewing speed of 2,500rpm and is equipped with a direct-drive system that improves start-up performance and shortens sewing time. The belt-loop feeding device is now provided with a halfway standby capability for subsequent belt-loops, and its faster belt-loop supply action shortens the time required for supplying belt-loops and helps speed up the machine time to 1.2 seconds per belt-loop (with 28 stitches).

With the improved consistency in belt-loop supply action and re-try capability, the machine downtime is substantially reduced

Belt-loops are fed out by the conventional gear-roller feeding mechanism and also drawn out by the new drawing mechanism on the clamp device. Supported by these two mechanisms, the folding fork catches “curled” or “creased” belt loops every time and supplies them to the head. In addition, the sensor of the clamp device detects the presence/absence of belt loops. If it detects a faulty belt-loop feed, the clamp device automatically repeats the clamping action. Since the operator doesn't have to operate the set-back switch, less time is lost

The machine quickly and reliably disposes of splices without any delays in cycle time

The machine preliminarily detects each splice in the belt loops and efficiently disposes of them. This means that even when the machine carries out the splice-disposal procedure, the belt-loop feeding device can complete its belt-loop supply action and supply the next belt loop well before the machine starts to sew. As a result, the operator can perform rhythmical and efficient sewing work with no delay in cycle time. By detecting changes in the material thickness, the machine's potentiometer finds splice in belt loops and disposes of them perfectly.

When changing the material to be sewn, the change in the material thickness recognized by the potentiometer as a splice can be easily adjusted and programmed through the machines' teaching function.

An electric sliding mechanism is installed in the front hook (near the operator)

The newly incorporated electric sliding mechanism is used to electrically shift the front hook when replacing the bobbin or conducting maintenance on nearby components in order to widen the space between the hooks and facilitate the job. In addition, when changing the needle gauge, the front hook can be finely positioned in increments of 0.01mm through the operating panel, thereby allowing the operator to easily adjust the distance between the blade points of the two shuttle hooks. Since the machine no longer requires any adjustment in the hook timing (phase), needle gauge adjustment is much simpler than ever before.

Belt loop supply function

The belt-loop feeding position is automatically adjusted to the belt-loop width. With this capability, the belt-loop width can be easily changed without mechanical adjustment. In addition, when feeding the belt-loop under the presser foot, the widthwise position of the belt loop can be offset through simple manipulation of the operating panel.

The machine is equipped as standard with an adjustable stand

The height of the working table can be easily adjusted to match the operator's height.
The operator can carry out sewing works in a comfortable posture with less physical strain and fatigue.