| 摘要 |
PURPOSE:To enable total automation of an operation for pushing a foamed body into a tube and prevent the foamed body from being torn off, pierced or drawn out upon completion of the operation, by pneumatically pushing the foamed body through a funnel-like conical surface of a jig into a hole provided at a lower part of the jig, and pushing the foamed body through the hole into the tube of a ball-point pen by a small-diameter rod. CONSTITUTION:A jig 4 used for pushing a sponge 5 into a tube 6 is provided with a hole 7 having a small diameter not more than the inside diameter of the tube 6, and with a funnel-like conical surface 8 in continuation with an upper part of the hole 7. An end face of the tube 6 is brought into contact with the lower surface of the jig 4, concentrically with the hole 7, and the sponge 8 is placed in the conical surface 8. The sponge 5 is located directly above the boundary between the hole 7 and the conical surface 8, under its own weight. Then, compressed air is blown downward into the conical surface 8, whereby the sponge 5 is pneumatically pushed into the hole 7. The sponge 5 is pushed downward by a pin 9 having a diameter approximate to the inside diameter of the hole 7, whereby the small piece of sponge 5 is smoothly pushed into the tube 6. |
