Page 68 - 《橡塑技术与装备》英文版2026年2期

HINA R&P TECHNOLOGY AND EQUIPMENT

curing press is achieved by matching different mold heights a finished tire. Depending on the molds installed in the
through a mold adjustment device. During mold adjustment, curing chamber, the raw tire forms finished tires of different
the mold is opened and closed reciprocally to observe the specifications; different molds have different heights, and
downward movement distance of the mold and check the value the curing chamber is equipped with a mold adjustment
on the tonnage gauge of the force measurement mechanism mechanism designed to accommodate different mold heights.
to determine whether the mold adjustment is in place. This Traditional mold adjustment mechanisms use adjustable
mold adjustment method is time-consuming, laborious, wrenches to rotate pinions. With the development of electrical
and difficult to operate. In addition, the force measurement automation and objective factors such as reducing labor
mechanism mainly displays the mold clamping force through intensity, almost all mechanical curing press mold adjustment
a tonnage gauge installed on the connecting rod. Each time the mechanisms have now achieved electric mold adjustment
mold clamping force is read, it requires a distant observation functionality. Figure 1 shows the mechanical curing press mold
of the tonnage gauge, making it difficult to read. To solve adjustment mechanism, which consists of a mold adjustment
these problems, Xia Houhui et al. proposed adding a sensing motor, an upper coupling, a connecting rod, a lower coupling,
mechanism for precise control of mold adjustment height to the a shaft, a flange seat, and a pinion. The upper and lower
mold adjustment device of the curing press, but did not provide couplings transmit the rotation of the mold adjustment motor to
a specific implementation plan for the sensing mechanism; You the pinion. The use of upper and lower couplings here mainly
Lican proposed an automatic mold adjustment control system facilitates the disassembly and maintenance of the pinion and
and method for the curing press, installing a mold adjustment seals.
encoder on the mold adjustment motor for real-time detection
of mold height; Cao Shiliang et al. used a laser ranging sensor
to measure the actual height after changing molds for automatic
mold adjustment; this paper proposes a different, simpler, and
more economical implementation plan, by equipping a hollow 1-Die-adjusting motor; 2-Upper coupling; 3-Connecting rod; 4-Lower
shaft rotary displacement encoder in the connecting shaft of coupling; 5-Shaft; 6-Flange seat; 7-Pinion gear
the mold adjustment device and upgrading the PLC code, to Figure 1 Mechanical curing press mold adjustment
mechanism
achieve one-time data calibration and adjustment for the same
mold, followed by display of cold mold clamping force values The overall mold adjustment mechanism is installed on
on the industrial control screen and one-click automatic mold the crossbeam web plate through the mold adjustment motor
adjustment function. This device has a simple structure, easy bracket, and is mounted to the crossbeam panel or steam
operation, low labor intensity, good versatility, and low cost for chamber head via a flange base. The small gear of the mold
intelligent transformation of existing curing presses, making it adjustment mechanism is designed with a large thickness to
easy to implement. ensure that during mold adjustment, the large gear can move
up and down while still meshing with the gears. Figure 2
1 Brief description of the mold adjustment shows the vulcanization chamber of a mechanical curing
mechanism press. The inside and outside of the mold adjustment nut are
The curing chamber is an important component of the designed with trapezoidal teeth, and the end face forms a
curing press and a functional part for curing tires. After the combination with the large gear thread. The mold adjustment
raw tire is loaded into the lower curing chamber through the motor transmits motion to the small gear, which meshes with
tire loading device, the upper curing chamber performs the the large gear on the end face of the mold adjustment nut.
mold closing action driven by the main drive, and the thermal The trapezoidal teeth inside the mold adjustment nut drive the
pipeline starts to work. The raw tire undergoes temperature trapezoidal teeth on the flange stud, and the trapezoidal teeth
and pressure effects in the curing chamber, ultimately forming outside the mold adjustment nut drive the trapezoidal teeth

·24· Vol.52，No.2