Design considerations and mold design techniques for mesh die-cutting

9759彩票集团 The use of manual bonding in mesh diecutting can easily result in ghosting, where the upper and lower adhesive layers are not aligned properly. If the size requirements are strict, please refer to the additional process or use adhesive to widen and punch positioning holes to position and bond.

When cutting mesh, if there is hair due to the blade being not sharp or the adhesive layer being thick, it can be solved by replacing it with a more elastic foam or repairing the blade (ordinary corrosion molds do not have much feasibility for repair). If the order is large, it is recommended to use carving molds.

Considerations for mesh die-cutting design and mold design

9759彩票集团Due to the strict size requirements of this product, the first and second knife molds need to be designed as corrosion molds to ensure size. At the same time, in order to make the molds durable and reduce fuzz, we need to add an additional heat treatment process to harden them compared to general corrosion molds.

2. Due to the use of manual bonding of double-sided tape and foam on the upper and lower sides of the mesh, there may be some hand error in manual bonding, resulting in dimensional deviation. Therefore, the inner frame of the first knife is enlarged by 0   1 5 m m。

When cutting foam, there will be more or less oblique edges, which often leads to larger dimensions during measurement. When designing the outer frame, the size of the cutting die needs to be reduced by 0   1 5 m m。

9759彩票集团When designing positioning holes, they should be enlarged to 0   0 3 m m， Avoid squeezing the positioning column due to the positioning hole being too small.

5. Three blade molds are used for production. The first blade cuts the inner frame of the doublesided tape and foam on the upper and lower sides of the mesh, the second blade cuts the handle position, and the third blade cuts the overall outer frame.

Mesh die-cutting process flow

1. As the composite machine shaft is not sufficient, first composite TESA4972 and foam for winding.

9759彩票集团2. The PET release film is used as the base film to be straightened on the laminating machine, and then the TESA4974 double-sided tape is laminated in the center (with the backing paper left on the surface). Then, the foam is compounded with adhesive. During lamination, remove the release paper from the double-sided tape and laminate it onto the backing paper of the previous layer of adhesive. Finally, the TESA4972 double-sided tape is compounded again on the surface of the foam.

Due to the presence of three layers of double-sided tape, it is easy to encounter problems such as sticking back and difficulty in waste disposal. When die-cutting the outer frame, release agents, kerosene, soapy water, and other items can be added according to sufficient time.