| CPC B25C 1/06 (2013.01) [B25F 5/00 (2013.01)] | 3 Claims |
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1. A method for intelligently identifying a nail gun punch pin, comprising the following processes under four working conditions respectively:
Working condition 1: normal operation, including the following processes:
S1, setting a punch needle (11) to be in an initial position, wherein a motor (3) stops, the punch needle (11) rests against a cam pin (15) of a punch needle drive cam (7), and the punch needle drive cam (7) does not rotate under the action of a unidirectional bearing (5), and an energy accumulator body (12) maintains the energy storage;
S2, pulling a trigger (16) to start the motor (3) to drive the punch drive cam (7) to rotate counterclockwise, instantly disengaging punch teeth (11-3), and releasing an accumulator (12) and the punch needle (11) pushing the nail downward at high speed;
S3, moving the punch needle (11) downward until an inductive photocoupler (8) passes through a photocoupler sensing notch (11-10) and then enters an inductive photocoupler masking edge (11-4), sending, by the inductive photocoupler (8) a masking signal to a control circuit, stopping the motor (3) to stop the punch needle drive cam (7);
S4, a clutch pawl (10) crossing a mating notch (11-5) on the punch needle (11) and the punch needle (11) continuing to move downward;
S5, the piston (14) holding the punch needle (11) beginning to contact a cushion (17), to align identification holes (11-9) on the punch (11) with the inductive photocoupler (8), causing the inductive photocoupler (8) to send a first in-place signal to the control circuit;
S6, the piston (14) contacting and compressing the cushion (17) and continuing to move downward for a distance and then stopping moving downward, wherein the punch (11) is in a fully released position, and the identification holes (11-9) crosses over the inductive optocoupler (8), and the inductive optocoupler (8) continues to be covered by the inductive optocoupler blocking along the inductive photocoupler masking edge (11-4), and sends out a second in-place signal to the control circuit;
S7, the cushion (17) springing back and reset to a state in which the piston (14) is in contact with the cushion (17) only, at which time the identification holes (11-9) are again aligned with the inductive photocoupler (8) to cause the inductive photocoupler (8) to send a third in-place signal to the control circuit;
S8, after the control circuit receives said third in-place signal, the control motor (3) is started and thereupon begins to drive the punch drive cam (7) to rotate counterclockwise and the cam pin (15) begins to engage the punch teeth (11-3);
S9, the punch drive cam (7) rotating counterclockwise for one week and then disengaging from the punch teeth (11-3), at which time the clutch detent (10) snapping into a mating notch (11-5) to lock the punch (11) from downward movement;
S10, the punch needle drive cam (7) continuing to rotate counterclockwise, engaging the punch needle teeth (11-3) again, driving the punch needle (11) upward until the inductive photocoupler (8) passes through the photocoupler sensing notch (11-10) and then leaves the inductive photocoupler blocking edge (11-4), sending a signal of non-blocking to the control circuit, and the motor (3) beginning to brake and stopping to stop the punch needle drive cam (7) to its initial position;
Working condition 2: Assembly failure, including the following processes:
After assembly of the nail gun is complete, turning on a power supply, starting the normal operation under the processes of S8, S9, S10, to set the punching needle (11) back to the initial position, wherein. in response to assembly problem or parts problem, the assembly problem or parts problem exhibiting in that the identification of holes (11-9) will not be able failing to align with the induction photocoupler (8), in that the control circuit failing to receive the third in place signal, and in that the motor (3) failing to rotate, the nail gun sends out a message indicating need for maintenance;
Working condition 3: Nail stuck punch needle, including the following processes:
In response to a first interruption of process S3 or process S4 in the normal operation, the first interruption exhibiting in that the punch needle drive cam (7) stopping rotating and becoming completely disengaged from the punch needle teeth (11-3), in that the inductive photocoupler (8) failing to send signals through the identification holes (11-9) to the control circuit, to the signals including first in place signals, second in place signals, and third in place signals, and in that the motor (3) failing to work and the punch needle drive cam (7) failing to rotate, the nail gun sends nail jam signal is sent out to indicate nail jam;
Working condition 4: Rebound failure, including the following processes:
In response to a second interruption of process S6 in the normal operation, the second interruption exhibiting in that the needle drive cam (7) stopping and becoming completely disengaged from the needle teeth (11-3), in that the piston (14) failing to rebound despite the inductive photocoupler (8) issuing the first in place signal and the second in place signal, in that the photocoupler (8) failing to send the third in place signal to the control circuit, in that the motor (3) failing to work, and in that the needle drive cam (7) failing to rotate, the nail gun sends an alarm, indicating need for maintenance.
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