The purchase and use of the die for the press machine

The purchase and use of the die for the press machine

Tablet is the most common form of pharmaceutical preparations because it is convenient to use, and mold is the most commonly used tablet tablet, which is an indispensable accessory on tablet press. How to choose the right mold is also a very important job after the tablet press is selected. In many daily tablets, the tablet press is not properly used due to improper selection of dies.

Classification of 1 dies

There are a wide variety of dies, but we can distinguish between the different materials used, the different materials, the different standards and the different shapes.

1.1 according to the different equipment used, there are single stamping die machine, rotary press die, flower basket type press die and press die.

1.2 according to the manufacture of different materials with die steel mold, die hard alloy, ceramic mold, chrome, titanium alloy steel material; the most common domestic mold is: GCr15, Crl2MoV, CrWuMn, 9Mn2V, 9CrSi; the most common imported mold material: A2, O1, S1, S7, PHG.S, PHG-P.

1.3 according to different standards, there are standard ZP (GB12253.90) IPT international standard mold, mold, EU mold standard and special non-standard machine mould pressing ring and battery mould; (standard JB/T20080.1-2006 high speed tablet press die (T Series) recently passed the trial);

1.4 according to the different shapes, there are circular, heteromorphic, shallow, deep, oblique, lettered, carved, and ring; see Figure 1, figure 2.

1.5 according to the different uses, there are tablets mold, effervescent tablet press die and battery ring mold.

Brief introduction of die

The die is a press mold pressing tablet, working face, the formation of the surface shape of the tablet punch, die is the diameter of the aperture.

The die is the main working parts of tabletting machine, usually a die includes three parts, mold, on the structure of the undershoot undershoot, similar to the punch diameter are equal, with up and down the punch diameter and in mould hole and can slide up and down freely in the die hole, but not there is a gap can leak powder.

According to the structure and shape of the die, it can be divided into circular and irregular shape (including polygon and Qu Xianxing). Punch the shape of the end surface of a plane shape, edge shape, shallow concave, deep concave and shaped, flat, cylindrical bevel shaped punch for tablet pressing flat, shallow concave for pressing double convex tablets, deep concave main press coated tablet chip, integrated form is mainly used to suppress special-shaped tablets. In order to facilitate the identification and use of drugs, in the face of die can also be carved with the name of the drug, dosage and vertical lines mark. In order to suppress different doses of tablets, the suitable punching die should be selected.