Semi-automatic sewing machine for sewing accessories and manufacturing tacks automatically perform labor-intensive manufacturing operations.In carrying out these and other tissue movement operations performed predetermined and specially designed mechanism, which clamps the fabric and holds accessories.
Working in step sits in front of the front part of the machine.For lifting clamp or pugovitsederzhatelya he pushes the pedal to the left, and to enable the car - on the right.The new semi-automatic control odnopedalnoe, t. E. When the pedal is depressed or lowered clamp pugovitsederzhatel simultaneously switched on the machine.
The use of semi-automatic sewing machines in production processes can significantly increase productivity, improve the quality of treatment and reduce fatigue working.
Button sewing machine
Button sewing machine designed for sewing flat buttons with four holes and two two-thread rack without lock-stitch.Main shaft rotational speed of 1500 rev / min, buttons with four holes are sewn in 21 puncture needle and buttons with two holes - 14 punctures.Sew on buttons diameter 15-35 mm, the distance between the holes of buttons 3-5 mm.Applicable thread:
cotton linear density of 7.5 tex HZH2;8.5 tex HZH2;11 tex HZH2 (GOST 6309-73);11 A needle № 100-120 (GOST 7322-55).
machine has a crank mechanism of the needle, the needle, except for variations in the vertical, has a deviation across the platform of the machine, thread take-up mechanism for hinged-rod, hook Central bobbin spinning, fabric and buttons can only move along the platform of the machine.
Processes button sewing .Pressing the left pedal raises pugovitsederzhatel thrust under his stack product and inserted between the legs pugovitsederzhatelya button.When you press the damper pedal through a chain is switched on the machine.Needle gets deviation across the platform of the machine and sew on buttons on the first two holes.After 10th puncture needle is deflected to the right, and the fabric together with the button moves toward the operator.Then again he gets the needle deflection across platforms and sew on buttons during the second two holes.After the 19th puncture needle stops stray across the platform and the machine makes two fixing a puncture.Button sewing machine will automatically shut down at the top position of the needle.
sewing on buttons with two holes is carried out only when the transverse displacement of the needle, after the two fixing needle punctures the machine automatically turns off.
the front part of the machine is set to an active and has a semi-cylindrical platform raised above the industry table.
Threading the upper thread . thread from the spool encircle between washers additional regulator tension between the washers of the main regulator of the tension, refineries loop niteprityagivatelnoy spring, right, is charged with the eye of take-up, top-down is carried out through a loop of wire thread guide mounted on the front board is introduced into the slot at the end of the needle barand in the direction from the working run by the needle eye.
needle is inserted into a hole of the needle bar up to the stop and fasten the screw.When installing the needle its long groove must face the operator.
Technique and major adjustments. Pressing the left pedal rises pugovitsederzhatel and moved to an active transparent screen, the axis of which is held in the lower front part of the machine.The transparent screen is used in order to eliminate safety lesions person working from fragments buttons and needles at incorrect orientation with respect to the needle hole buttons.Button is inserted between the two legs and a focus that is. E., It gets three points of support.When installing the buttons of her right front hole must be aligned to the line of motion of the needle.The machine is switched on after podkladyvaniem products under foot.
The machine programmer, controlled by the movement of the needle and the fabric (or other materials), along with a button, a copier, to the left of working.Its outer groove of the control deviation of the needle, and the inner - the fabric.Note that when sewing on buttons with two holes copier must be replaced by another, the outer groove which makes it possible to sew a button.The mechanism of movement of the materials in this case should be turned off.In this case, the adjustment of the value of the longitudinal movement of the fabric by moving muff with loose screws along the rod.If the muff and the screw up and move closer to the fulcrum of the lever longitudinal movements, the fabric and the button will be in place, ie. E. Will not get movement.Generally, the adjustment value of longitudinal movement and fabric buttons is executed when the distance between the parallel holes buttons, when the fabric moves along the platform between the 10th and 11th needle punctures.
By changing the distance between the holes buttons adjust the amount of deflection of the needle across the platform of the machine.This adjustment is performed by moving the screw stud along the slot of the horizontal arm.If after loosening nut screw pin to move from the working trifling deviations decrease needle.If the deviation of the needle is adjusted correctly, t. E. The needle is in contact with the edges of the holes in the button, adjust the position of the needle relative to the holes.For example, if the needle regard right wall openings buttons, the needle deflection feasible to left;To do this, loosen the screw and increase the length of the rod.
If you change the diameter of the buttons adjust the distance between the legs and stop.To do this, loosen the screws and move the fence along the platform.If it is moved from the working distance between the legs and increase focus.The pressure paws on the cloth adjusting bolt.If it is screwed, the pressure of the leaf spring and, accordingly, increase the tabs.
winder for winding the lower thread is mounted on the rack tide machine arm.Threads before winding the bobbin encircle washers between the tension adjuster.
machine has two pulleys: working rigidly mounted on the main shaft of the machine, and single, freely rotating on the main shaft.Both of the pulley and drive belt in order to ensure safety requirements closed hinged cover.
cleaned and lubricated machines .Clean the working bodies of machines perform the same way in all grind machines;To do this, remove the front-line pre-board and flip-down panel that covers the shuttle set.Grease interfaces mechanisms performed manually using an oil can.For industrial oil lubrication is recommended.
