Wire stitching apparatus with missing staple pin detection mechanism

A wire stitching apparatus with missing staple pin detection mechanism comprising:

• a wire spool (1) loaded with a wire (22);
• a stitching clincher having an upper clincher (15) and a lower clincher (16) attached to the upper clincher (15);
• a stitching head (7) arranged oppositely to the upper clincher (15) for reciprocal vertical movement between a stand by position in which it is upwardly separated from the clincher and a stitching position in which it abuts the upper clincher (15);
• a power supply box having a positive terminal and negative terminal;
• said power supply is configured to provide an electrical signal to a relay;
• said relay having a positive terminal and a negative terminal;
• the relay is in electrical communication with a PLC (Programmable Logic Controller);
• the stitching head (7) is configured to receive required length of wire (22) from the spool (1) and applied the wire (2) into a set of sheets (13) to form a staple;
• Characterized in that,
• the negative terminal of the power supply box is electrically connected to the stitching head (7) and the positive terminal of the power supply box is connected to the positive terminal of the relay;
• the negative terminal of the relay is connected to the lower clincher (16);
• the power supply box provides the electrical signal to the relay when the upper clincher (15) and the stitching head (7) being brought in contact through the staple wire (22) inserted into the set of sheets (13) to determine the successful stapling;
• the power supply doesn't provide the electrical signal to the relay if the upper clincher (15) and the stitching head (7) not brought in contact to determine the missing of stapling.