Mold design and manufacturing matters needing attention

Mold design and manufacturing matters needing attention

one Rubber check

Check whether the glue position is uniform, if not, it will cause shrinkage and affect the appearance.

two Determine parting surface and drawing die Angle

1. Select the maximum projection on the mold opening direction of the parting surface and simplify it as much as possible

2 touch penetration position: try to choose to touch the back mold, if you want to touch the front mold, easy to walk, affect the appearance, the use of plane contact.

3. Pillow position: Pillow 5-8 mm, and then flat with the large parting surface, glue part of 3 degrees, 3 degrees behind or to avoid air.

4. Plug-in bit: use the side work, pull 3 degrees, generally do inserts.

3. The principle of draft

1: glue reduction direction die drawing.

2: The maximum end of the shaft is the product size, and the minimum end of the hole is the product size.

Four. The 2 d image

2D must pay attention to mirroring and shrinkage, if you forget this step, most molds will be scrapped.

Five. shrink

Shrinkage rate of small products (below 5‰) can be put according to experience shrinkage, shrinkage rate of large products, such as a 18‰ can also put 20‰ or even put 22‰ products, we must first seek the opinions of the person in charge and then put, so as not to match with the size of supporting products.

Six. Eccentric KO of the jaw nozzle should be coaxial

Seven. Row a point

1. The inclined guide pillar is generally used as the power, and the relatively small core-pulling distance is T-shaped groove, which is greater than 30mm.

2. The Angle of the inclined guide pillar is 2-3 degrees smaller than the Angle of the shovel.

3. The row position of the back die is extended into more than half of the total height of the front die, which can save the shovel and use the processing surface of the front die as the pressing surface.

4. Row width is greater than 100mm, try to use 2 oblique guide posts, more than 150mm in the middle of the guide groove.

5. Position positioning: try not to use poppy marbles (the force is not large enough), and position with screws.

6. Spring must be put on the row position at the TOP position, otherwise the row position cannot return to the position after opening due to the effect of meme gravity, resulting in collision.

7. For the projection of die opening direction, if there is a inclined top or a thimble under the row position, the first reset mechanism should be set, otherwise there may be interference between the row position and the inclined top or the thimble.

8. Walk the line, walk the beer, wrap the glue position, straight out.

9. The running stroke should be greater than the buckle position 2 to 3mm, the cylinder stroke should be greater than the buckle position 10mm.

10. In order to increase the firmness of the shovel, try to do backhoe.

Eight. Key points of inclined top design

1. The inclined top is generally 3-8 °, not more than 15°.

2. The ejection stroke is generally greater than the buckle position 0.5-1mm.

3. Ejection direction: the glue position should be flat or upward, otherwise do delay inclined top.

Mold Manufacturing Information