Electronic component mounting machine

1. An electronic component mounting machine comprising:

a mounting head that mounts electronic components onto a circuit board;

a tape feeder which feeds a first tape material that accommodates a plurality of electronic components to the mounting head;

a counting device which counts the number of electronic components remaining in the first tape material by subtracting the number of consumed electronic components which corresponds to an operating amount of the electronic component mounting machine from an initial value of the number of the electronic components accommodated in the first tape material;

a detection device which detects a splice portion that joins a starting end of a second tape material to a tail end of the first tape material; and

a determining device which determines whether or not a count value of the number of electronic components remaining in the first tape material obtained by the counting device when the detection device detects the splice portion is within a normal range, the normal range being predetermined,

wherein the determining device determines that the detection device has malfunctioned when the count value obtained by the counting device when the detection device detects the splice portion is out of the normal range.

2. The electronic component mounting machine according to claim 1 ,

wherein the determining device changes the normal range in accordance with the initial value of the number of the electronic components accommodated in the first tape material.

3. The electronic component mounting machine according to claim 2 ,

wherein the determining device determines at least one of an upper limit of the normal range or a lower limit of the normal range by multiplying a coefficient by the initial value, the coefficient having a value between 0 and 1.

4. The electronic component mounting machine according to claim 2 ,

wherein the determining device determines at least one of an upper limit of the normal range or a lower limit of the normal range by subtracting a number from the initial value, the number having a value between 0 and the initial value.

5. The electronic component mounting machine according to claim 1 , further comprising:

a notifying device which performs a notification operation when the count value obtained by the counting device when the detection device detects the splice portion is out of the normal range.

6. The electronic component mounting machine according to claim 5 ,

wherein the notifying device generates at least one of a sound, light, vibration, an electric signal, or an electric wave as the notification operation.

7. The electronic component mounting machine according to claim 5 ,

wherein the notification operation is a notification that the detection device has malfunctioned.

8. The electronic component mounting machine according to claim 1 , further comprising:

a correction device which corrects the count value obtained by the counting device to a normal value when the count value obtained by the counting device when the detection device detects the splice portion is within the normal range.

9. The electronic component mounting machine according to claim 8 ,

wherein the normal value is the number of electronic components which is expected to remain in the first tape material when the detection device detects the splice portion.

10. The electronic component mounting machine according to claim 9 ,

wherein the normal value changes in accordance with the number of electronic components accommodated in the first tape material per unit length.