A safety device for a hydraulic press contains: a bottom plate. The bottom plate includes a through orifice and a pull stud inserted through the through orifice. The pull stud includes a shank and at least one defining ring, and the bottom plate includes a clamper which has an abutting projection mounted above a top of the bottom plate. The abutting projection has two tilted swing arms rotatably connected on two sides thereof, and two extensions of the two tilted swing arms are located on two sides of the pull stud. A respective one tilted swing arm includes an elongated orifice extending thereon from a central section of the respective one tilted swing arm, and the elongated orifice slidably accommodates a guide rod. The bottom plate further includes a drive device mounted thereon and located behind the abutting projection, and the drive device includes a pushing element.

A mold locking mechanism for a hydraulic press contains: a bottom plate through which a pull stud is inserted. The pull stud includes a shank and multiple defining rings, and the bottom plate further includes a clamper and a drive device. The clamper includes a pair of rotatable arms. At least one resilient element is defined between the pair of rotatable arms. When the clamper is in a clamping state, the at least one resilient element forces the pair of rotatable arm to move close to each other, and a respective one defining ring does not pass across a gap of the pair of rotatable arms. The drive device drives the pair of rotatable arms to rotate to switch the clamper to be in an unclamping state. The respective one defining ring moves across the gap after the pair of rotatable arms move away from each other.

Embodiments are directed to a compression molding apparatus. The compression molding apparatus may include a female mold, a heated male mold, and a cooled male mold. The female mold may carry ultra-high-molecular-weight polyethylene (UHMW) material. The heated male mold may compress the UHMW material in the female mold during a first time period. The cooled male mold may compress the UHMW material in the female mold during a second time period.

A pouch molding apparatus and method involves deforming a pouch so that a larger amount of clearance is secured to increase the capacity of the pouch, thereby improving the pouch molding process to increase the depth and capacity of a pouch cup part. The pouch molding apparatus includes a die and a punch. The die has a die groove recessed therein in a shape configured to mold a pouch. The punch is disposed above the die groove, wherein the punch includes a body part configured to be inserted into the die groove together with a pouch film disposed between the die and the punch, and pressing parts are provided on opposite sides of the body part to press the pouch film toward an inner surface of the die groove.

Provided in the present disclosure are an integrated machine for sterilizing and pressing, an assembly line for sterilizing and pressing a combination lid and a method therefor. The integrated machine for sterilizing and pressing includes pressing devices and a sterilization case including an outer cylinder and an inner cylinder provided in the outer cylinder. A material mold is installed in the inner cylinder and provided with a plurality of material placing holes. Each of the pressing devices includes a driving member and a pressing plate, and the driving member drives the pressing plate to move. The material mold is divided into X*Y pressing areas, an area of each pressing area is equal to an area of the pressing plate, number of the pressing devices is X*Y, each pressing device corresponds to each pressing area, and a plurality of the material placing holes are distributed on the X*Y pressing areas.