While a mold for plastic injection molding is used by installing it in an injection molding machine, at present the specifications for installing the mold in the molding machine are different for different molding machines. On the other hand, in JIS, the recommended standard specifications have been stipulated regarding the "Mold related dimensions of plastic injection molding machines" (JIS B 6701-1992). From now on, these standards are considered to be referred to for the general injection molding machines manufactured in Japan. These standards will be discussed for several courses beginning with this course.

There is only one point that has to be paid attention to and that is, in the actual design of a mold, as the final information for judgment, giving first priority to the mold installation specifications of the injection molding machine that is scheduled to be used. Since JIS standards are only recommended standards, depending on the individual features of the injection molding machine, it is possible that the contents of the standards have been changed, and hence it is necessary to keep this point in mind.

＜JIS B 6701-1992＞
"Mold related dimensions of plastic injection molding machines"

(1) Scope

These specifications stipulate the mold installation dimensions, etc. of plastic injection molding machines with a mold clamping force of 196 to 7845 kN (20 to 800 tf).

Explanation:

The names of the different parts of the injection molding machine are as shown in the figure below. (These names are merely the names used in the explanation of this standard, and do not indicate the shape or the structure of the different parts.)

In specific terms, the following items have been stipulated.

	1.	Spacing of the tie bar
	2.	Mold mounting bolt
	3.	Placement of the holes for mold mounting
	4.	Placement of the hole for the push rod (ejector rod)
	5.	Shape of the tip of the injection nozzle
	6.	Shape of the hole for the locate ring