Die mounting system and die mounting method
A die mounting system in which die supply device is set on component mounter and dies supplied from die supply device are mounted on circuit board by mounting head of component mounter, determines the next die transfer position is determined such that the longer of time required for die transfer preparation operation (die imaging and image processing, die pickup operation, and movement and vertical inverting operation of a supply head) of die supply device and time required for die mounting operation (movement and vertical motion at the mounting position of mounting head) of component mounter is made shorter, and the difference (which corresponds to the waiting time at the die transfer position) between the two times decreased, such that the cycle time is shortened.
1. A die mounting system comprising:
a die supply device that supplies dies formed from a single diced wafer affixed to a dicing sheet and that is set on a component mounter, the die supply device including:
a supply head that picks up a die from the dicing sheet and is then vertically inverted, and
a supply head moving mechanism that moves the supply head;
a mounting head of the component mounter that picks up a die supplied from the die supply device and mounts the die on a circuit board; and
a control system configured to control movement of both the supply head and the mounting head in a controls operation where the supply head is moved above the die which is to be a pickup target by the supply head moving mechanism, the die is picked up by the supply head, the supply head is vertically inverted, the supply head is moved to a die transfer position by the supply head moving mechanism, and the die held by the supply head is picked up by the mounting head of the component mounter at the die transfer position and mounted on a circuit board,
wherein the control system is configured to set a next die transfer position and to move both the supply head and the mounting head to the next die transfer position to shorten a cycle time by shortening the longer of two times and reducing the time difference of the two times, the two times being:
the time required, after the completion of die transfer operation of picking up a die held by the supply head of the die supply device with the mounting head of the component mounter at the die transfer position, for die transfer preparation operation of inverting the supply head of the die supply device to its original state and moving the supply head above a die which is to be the pickup target, picking up the die, vertically inverting again, and moving to the next die transfer position, and
the time required, after the completion of die transfer operation, for die mounting operation of moving the mounting head of the component mounter above the die mounting position on the circuit board, mounting the die on the circuit board, and moving the mounting head to the next die transfer position.
2. The die mounting system according to claim 1 , wherein
the control system uses the movement time of the supply head as representative information of the time required for die transfer preparation operation of the die supply device, and the movement time of the mounting head as representative information of the time required for die mounting operation of the component mounter.
3. The die mounting system according to claim 1 , wherein
the control system prepares multiple provisional die transfer positions that are candidates for the next die transfer position, calculates, under each of the provisional die transfer positions, the time required for die transfer preparation operation of the die supply device or information equivalent to that, and the time required for die mounting operation of the component mounter or information equivalent to that, and decides the next die transfer position as the provisional die transfer position that results in the shortest cycle time.
4. A die mounting method including
a die supply device that supplies dies formed from a single diced wafer affixed to a dicing sheet and that is set on a component mounter, the die supply device including:
a supply head that picks up a die from the dicing sheet and is then vertically inverted, and
a supply head moving mechanism that moves the supply head; and
a mounting head of the component mounter that picks up a die supplied from the die supply device and mounts the die on a circuit board, the die mounting method comprising:
controlling movement of both the supply head and the mounting head in an operation where the supply head is moved above the die which is to be a pickup target by the supply head moving mechanism, the die is picked up by the supply head, the supply head is vertically inverted, the supply head is moved to a die transfer position by the supply head moving mechanism, and the die held by the supply head is picked up by the mounting head of the component mounter at the transfer position and mounted on a circuit board, and
setting a next die transfer position and moving both the supply head and the mounting head to the next die transfer position to shorten a cycle time by shortening the longer of two times and reducing the time difference of the two times, the two times being:
the time required, after the completion of die transfer operation of picking up a die held by the supply head of the die supply device with the mounting head of the component mounter at the die transfer position, for die transfer preparation operation of inverting the supply head of the die supply device to its original state and moving the supply head above a die which is to be the pickup target, picking up the die, vertically inverting again, and moving to the next die transfer position, and
the time required, after the completion of die transfer operation, for die mounting operation of moving the mounting head of the component mounter above the die mounting position on the circuit board, mounting the die on the circuit board, and moving the mounting head to the next die transfer position.
5. The die mounting method according to claim 4 , wherein
the movement time of the supply head is used as representative information of the time required for die transfer preparation operation of the die supply device, and the movement time of the mounting head is used as representative information of the time required for die mounting operation of the component mounter.