Solder paste dispensing feedback system and circuit board printer using the same

A solder paste dispensing feedback system for a circuit board printer, characterized by comprising:

• a solder paste container (101), the solder paste container (101) being used to contain solder paste, and the solder paste container having an outlet (102);
• a solder paste extruding device (201), the solder paste extruding device (201) being used to extrude the solder paste from the outlet (102) of the solder paste container (101);
• a first sensor (301), the first sensor (301) being configured to detect solder paste in the solder paste container (101) and generate a first signal, the first signal being used to indicate whether the solder paste container (101) still contains solder paste;
• a second sensor (302), the second sensor (302) being configured to detect an operating state of the solder paste container (101) and generate a second signal, the second signal being used to indicate whether solder paste is extruded from the outlet (102) of the solder paste container (101);
• a control device (401), the control device (401) being configured to receive the first signal and the second signal, and control the operation of the circuit board printer according to the indications of the first signal and the second signal, characterized in that:
• the control device (401) is configured such that:
• when the first signal of the first sensor (301) indicates that there is solder paste in the solder paste container (101), and the second signal of the second sensor (302) indicates that solder paste is extruded from the outlet (102) of the solder paste container (101), the control device (401) controls the circuit board printer to continue operating;
• when the first signal of the first sensor (301) indicates that there is solder paste in the solder paste container (101), and the second signal of the second sensor (302) indicates that no solder paste is extruded from the outlet (102) of the solder paste container (101) within a predetermined period of time, the control device (401) controls the circuit board printer to issue a confirmation prompt, so as to prompt an operator to confirm by observation whether the solder paste in the solder paste container (101) has been used up;
• when the first signal of the first sensor (301) indicates that there is no solder paste in the solder paste container (101), and the second signal of the second sensor (302) indicates that solder paste is extruded from the outlet (102) of the solder paste container (101), the control device (401) controls the circuit board printer to continue operating;
• or
• when the first signal of the first sensor (301) indicates that there is no solder paste in the solder paste container (101), and the second signal of the second sensor (302) indicates that no solder paste is extruded from the outlet (102) of the solder paste container (101) within a predetermined period of time, the control device (401) controls the circuit board printer to issue a replacement prompt, to prompt the operator to replace the solder paste container (101).

A solder paste dispensing feedback system for a circuit board printer, characterized by comprising:

• a solder paste container (101), the solder paste container (101) being used to contain solder paste, and the solder paste container having an outlet (102);
• a solder paste extruding device (201), the solder paste extruding device (201) being used to extrude the solder paste from the outlet (102) of the solder paste container (101);
• a first sensor (301), the first sensor (301) being configured to detect solder paste in the solder paste container (101) and generate a first signal, the first signal being used to indicate whether the solder paste container (101) still contains solder paste;
• a second sensor (302), the second sensor (302) being configured to detect an operating state of the solder paste container (101) and generate a second signal, the second signal being used to indicate whether solder paste is extruded from the outlet (102) of the solder paste container (101);
• a control device (401), the control device (401) being configured to receive the first signal and the second signal, and control the operation of the circuit board printer according to the indications of the first signal and the second signal, characterized in that:
• the solder paste has an extrusion path from the outlet (102) of the solder paste container (101), and the second sensor (302) is located downstream of the outlet (102) of the solder paste container (101) in the direction of the extrusion path of the solder paste, and to the outlet (102) of the solder paste container (101);
• the second sensor (302) is a photoelectric sensor;
• and
• the photoelectric sensor defines an opening region (303a, 303b), and the extrusion path of the solder paste passes through the opening region (303a, 303b).