Tungsten Carbide Die Thimble

Tungsten carbide die thimble is also known as putter, insert needle, holder needle, which plays an important role in separating the product from mold and conducting the light hole. And is an important component in mold and has been widely used in lathe, grinder and other mechanical equipments. There are some applications of tungsten carbide die thimble:
1. Generally used in separating the product from plastic mold;
2. Tungsten carbide die thimble can be also used in conducting light hole;
3. Mounted on a lathe or grinder, used to support the workpiece and the workpiece is rotated around its head conical metal rod;
4. Support the mold, such as insert needle (includes vaulted needle, standard needle and non-standard thimble).

Lathes, grinders thimble standard model: Fixed thimble standard is GB / T9204.1-1988, standard rotary thimble is JB / T3580-1998. Thimble and matching plastic mold design standards:
1. Less than 3mm should use two thimbles;
2. With the mast out of the top block, requiring top plate insert block 8 mm. Top block must have a fixed guide bushing;
3. Small top block can not be fixed with screw, design the pin for positioning;
4. Sheet R angle must be designed, and the thimble is the priority when the top sheet either thimble can be used;
5. In the mold can be used with the top piece can also be ejected with a thimble circumstances, give priority to thimble;
6 thimble through the knife left 20-25 mm;
7. Thimble plate gap between the left and right through the knife 0.5 mm;
8. The ejector pin must have a lower guide pin and a trash pin;
9. Thimble plate reset as much as possible to give priority to the top of the accessories;
10. To maximize the use of the top of the thimble;
11. Can be used to automatically lift off the premise of the product under the roof, try to avoid gas cap;
12. Core, cavity valve to design concentric (especially transparent products);
13. Mold design Carefully calculate the top of the distance, to avoid the lack of lead to the top of the trip;
14. Not the same product to carefully consider the top position and the top out of the way;
15. Cylinder top out of the mold cylinder to put the top of the needle board. 

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