High-speed soft capsule forming machine

A high-speed soft capsule forming machine comprising:

• sheet forming units configured to coat a gelatin solution on cooling drums, which are rotating, to form two gelatin sheets;
• a pair of die rolls having cavities engraved into a one-half shape of the capsule provided on outer peripheries of the pair of die rolls so as to rotate in opposite directions while facing each other and approaching each other in a state in which the cavities are arranged to correspond to each other, in order to form the gelatin sheets into a capsule shape while heat-sealing the gelatin sheets;
• a wedge which is located above the pair of die rolls, in which one or more rows of nozzles for receiving liquid medicine from a liquid medicine feeding unit and injecting the liquid medicine between the gelatin sheets inserted into the cavities of the pair of die rolls are symmetrically formed, and in which heaters for heating the gelatin sheets to a predetermined temperature are embedded in the wedge;
• and
• a controller configured to control rotational speeds of the pair of die rolls and the cooling drums in proportion to a preset angle from the center of the pair of die rolls to the nozzles formed in the wedge, to control temperatures of the wedge and the cooling drums in inverse proportion to the preset angle, and to control an interval of operations of the nozzles for injection of the liquid medicine in proportion to a preset number of rows of the arranged nozzles to adjust forming speed,
• wherein the controller controls such that whenever an angle from a starting point, which is a section from the centers of the pair of die rolls 20 to a part in which the gelatin sheets S are joined and sealed, to the nozzles formed in the wedge increases by 30° from a reference angle (30°), the rotational speed of the pair of die rolls increases by 4 to 6 RPM/min from a reference rotational speed (4 to 6 RPM/min), a surface temperature of the wedge increases by 1 to 2° C. from a reference temperature (38 to 42° C.), the rotational speed of the cooling drums increases by 1.2 to 1.8 RPM/min from a reference rotational speed (1.2 to 1.8 RPM/min), a surface temperature of the cooling drums decreases by 1° C. from a reference temperature (20 to 18° C.), and the interval for the operations of the nozzles for one dose of liquid medicine further increases by 3 times per second from a reference number of times (3 times per second), and when the number of rows of the nozzles increases by 1 row from a reference row (1 row) formed in the reference angle, the number of times decreases by a value obtained by dividing the reference number of times for the reference angles by the increased number of rows.