1. Care of convex and concave molds

When the convex and concave die is disassembled, please pay attention to the original condition of the die, in order to facilitate the restoration of the subsequent mold installation.Replace the punch, should see through the unloading plate is smooth.

(1) for the maintenance of the total length of the punch becomes shorter, need to add gasket to reach the required length, should check the effective length of the punch is sufficient.

(2) the use of a new punch or die insert, pay attention to the treatment of the clean corner.

Due to the wear of the grinding wheel in grinding, there will be a small R in the concave and clear Angle. Relative to the outer convex point, it is also necessary to manually fix R to make the matching gap reasonable.More attention should be paid to the formed small protrusions.Replace the broken punch, check the cause, at the same time, check the die whether it has caused the edge breakage, whether it is necessary to grind the edge.

Die assembly, should be incorporated into, and then use a flat iron on mold core lightly with copper bar in place, must not oblique and rely on strong type (if necessary, can be in the bottom of the mold core Angle pouring R in order to easily import), such as uneven when assembly, set up under the die gasket should level off, generally no more than two pieces (and as far as possible use GangDian), otherwise easy to cause the die dimension unstable fracture or forming (especially forming).

After the punch and core are assembled, necessary inspection should be made on the care belt to check whether the parts are installed wrong or upside down, check whether the concave core is inverted, and assemble the loading and unloading board or closing the mold after confirming the correctness.Pay attention to do the locking confirmation of unloading plate screw, so as to obtain sufficient locking force.

Note: when locking, cross lock should be carried out from inside to outside with balanced force. Do not lock one screw at a time and another screw at the same time, otherwise the punch will break or the precision of the mold will be reduced.Igniter metal tube manufacturer

2. Adjustment of mold clearance

Mold core positioning hole for frequent mold core and the combination of multiple and wear and tear, causing big clearance after assembly (loose after assembly produce) or uneven clearance (positioning deviation), all can cause after cutting cross section shape, punch break easily, produce burr, etc., can be through the hedge cutting section status after inspection, make the appropriate clearance adjustment.When the clearance is small, the section is small; when the clearance is large, the section is large and the burr edge is large; when the clearance is large, the section is large and the burr edge is large.Precision stamping parts of cigarette lighter

In daily production, attention should be paid to collecting and preserving the material strip when the original mold is in good condition. If the subsequent production is not smooth or the mold has variation, it can be used as a reference for progressive mold maintenance.In addition, the auxiliary system, such as whether the ejector pin wear, whether the ejector pin can, guide pin and bushing wear, should pay attention to check and maintenance.