Shock absorber

A shock absorber comprising:

• stopper means for determining a stop position of a workpiece by directly or indirectly coming into contact with the workpiece which has reached a transfer end;
• an absorber main body means for absorbing and cushioning collision energy generated when the workpiece comes into contact with said stopper, wherein said stopper means has at a tip end thereof a contact portion with which the workpiece is engageable and is mounted to a workpiece transferring device such that said stop position of said workpiece is adjustable, and
• said absorber main body means having at a tip end thereof a shock-absorbing portion for absorbing the collision energy and is mounted to said stopper means such that said absorber main body means is coaxial with said stopper and that a relationship between positions of said contact portion at said tip end of said stopper means and said shock-absorbing portion with respect to each other is adjustable wherein said stopper means has a substantially cylindrical shape and has threads respectively formed on an inner periphery and an outer periphery of said stopper means, said absorber main body means has a substantially columnar shape, a thread is formed on an outer periphery of said absorber main body, said stopper means is screwed in a threaded hole of said workpiece transferring device such that said stopper means can move forward and rearward by rotation, said stopper is fixable in an arbitrary position by a locknut screwed on said thread on said outer periphery, said absorber main body means is screwed in said stopper such that a tip end portion and a rear end portion of said absorber main body means projects outside from said stopper, and said absorber main body means is fixable in an arbitrary position by a locknut screwed on said thread on said outer periphery at said rear end portion.