| 摘要 |
<p>The present invention relates to a parting lock for an injection mold. The parting lock temporarily fixing a movement mold to a fixation mold in order to extract an injection molded body comprises: a locking bolt which includes a first taper section slopingly extended at circumference towards an upper part from a screw part coupled to the fixation mold and a compression part in which a line section is sequentially formed; and a resin sleeve which includes a taper surface corresponding to the compression part at the inner circumference by being penetrated in a short pipe shape and is bonded and penetrated to the locking bolt. The parting lock for an injection mold couples the locking bolt to the fixation mold and gradually compresses the taper surface of the resin sleeve by the compression part as the locking bolt is tightened up so that the central circumference of the resin sleeve is expanded towards the outside. The present invention allows the circumference of the resin sleeve to be gradually expanded by applying uniform pressure in a vertical direction through the compression part according to the joint combination of the locking bolt and is able to minimize the protrusion of a head part of the locking bolt from a mold. Accordingly, the present invention increases binding force on a locking socket by the increase of a contact area, increases replacement life expectancy according to the clear expansion of the resin sleeve with relatively small clamping force as compared with an existing parting lock, allows the length of the resin sleeve to be formed to be short and is able to reduce manufacture costs.</p> |
