Rear limit detection position mistaken collision prevention stop block of packer sword penetrating device

The utility model provides a rear limit detection position mistaken collision prevention check block of a packer sword penetrating device. The rear limit detection position mistaken collision prevention check block comprises a mistaken collision prevention check block and a sword groove. The sword groove is provided with a sword groove hole, a sword groove side face hole a and a sword groove side face hole b which are integrally communicated with one another. A stop block clamping pin, a stop block clamping handle, a stop block panel and a stop block convex edge which are integrally processed are arranged on the mistaken collision prevention stop block; the width of the baffle plate is greater than the diameter of the sword groove hole; the length of the baffle plate is equal to the width of the sword groove; the using method of the mistaken-collision-preventing check block comprises the steps that the check block protruding edges at the two ends are aligned with a sword groove side face hole a and a sword gr