Injection mold polishing serves two purposes; One is to increase the finish of the mold, so that the surface of the product produced by the mold is smooth, beautiful and beautiful, and the other is that the mold can be easily demolded, so that the plastic is not stuck to the mold and cannot be taken off.
The following matters should be paid attention to in injection mold polishing:
(1) When a new mold cavity starts processing, the surface of the workpiece should be checked first, and the surface should be cleaned with kerosene so that the oil stone surface will not be stuck with dirt and cause the loss of cutting function.
(2) When studying coarse lines, it should be carried out in the order of first difficulty and then easy, especially some difficult dead corners, and the deeper bottom should be studied first,
(3) Some workpieces may have multiple pieces put together to study light, first study the coarse grain or spark pattern of a single workpiece, and then put all the workpieces together until smooth.
(4) For workpieces with large planes or side planes, use oil stones to remove coarse lines and then use straight steel sheets for light transmission detection to check whether there are unevenness or inverted bad conditions, if there is an inverted buckle, it will lead to difficulty in demolding or strain of the parts.
(5) In order to prevent attention from being developed inverted by the mold workpiece or there are some bonding surfaces that need to be protected, you can use a saw blade to paste or stick it on the edge with sandpaper, so that the ideal protection effect can be obtained.
(6) Pull the mold plane back and forth, and drag the handle of the oil stone as flat as possible, do not exceed 25°; Because the slope is too large, the force is rushed from top to bottom, which can easily lead to a lot of coarse lines on the workpiece.
(7) If the plane of the workpiece is polished with copper or bamboo sheet pressed with sandpaper, the sandpaper should not be larger than the tool area, otherwise it will be studied where it should not be studied.
(8) The shape of the grinding tool should be close to the surface shape of the mold, so as to ensure that the workpiece is not deformed.
If you do the above points well, then the polished appearance of the injection mold will be very beautiful.
