JPS6248514A - Mold supporting device for tire vulcanizing machine - Google Patents

Abstract

PURPOSE:To eliminate the reduction of actual production time and prevent a cleaned mold from getting dirt by a method wherein an inner cylinder is descended to fix a lower mold to a lower pressure plate during using the mold while the inner cylinder is ascended to lift up a mold upon replacing the mold. CONSTITUTION:When a mold replacing device is released and a mold fixing and lifting device 5 is operated to pull down an inner cylinder 4, locked to a lower mold 7, upon operating the mold, the bottom force 7 is centered correctly at the center of the machine by a mold centering mechanism 6 while descending. The mold fixing and lifting device 5 outputs a force in a direction of descending the bottom force 7 and fixes it regidly to the lower pressure plate 1. In case the mold is removed, fixing of an upper pressure plate and top force 10 is released and the bottom force 7 is put on the top force 10. The mold fixing and lifting device 5 is operated upwardly whereby the fixing of the bottom force 7 and the lower pressure plate 1 is released and the forces 7, 10, which are held by the inner cylinder 4, are ascended. According to this method, a time necessary for replacing the mold may be shortened and an operator will never enter into the inside of the machine.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in a tire mold attachment/detachment mechanism used in a tire vulcanizer.

[Conventional technology]

A tire vulcanizer for manufacturing tires uses a pair of upper and lower tire molds, with the upper mold being fixed to the upper pressure plate of the press and the lower mold being fixed to the lower pressure plate of the press with multiple bolts. There is.

[Problem that the invention seeks to solve]

There are many types of tires these days, and therefore the molds used must be removed and reinstalled frequently.The conventional fixing method using multiple bolts takes a lot of setup time and reduces actual production time. A problem has arisen in which the

In addition, in the conventional method, workers have to be inside the press to remove and install bolts, so working near hot metal is not a bad idea for workers, but it also contaminates the cleaned mold. There is a problem with putting it away.

[Failure to solve the problem]

The bladder operating mechanism is provided with an inner cylinder for mold operation, and a bead ring constituting a part of the tire mold is inserted into the upper end of the inner cylinder,
After the mold is inserted and lowered, the mold is fixed at the center of the lower mold by constantly pulling the inner cylinder downward.

[Effect]

The mold operating cylinder is extended to lift the mold, the cylinder and the lower mold are unlocked, and the mold is replaced.

〔Example〕

In FIGS. 1 to 4, an outer cylinder 3, an inner cylinder 4. The mold fixing/lifting device 5 (illustrated is a fluid pressure cylinder) and the mold centering mechanism 6 are comprised. The outer cylinder 3 is supported by the lower pressure plate 1 and guides the inner cylinder 4.

Further, a mold centering machine s6 is provided at the upper part of the outer cylinder 3, and a mold fixing/lifting device fkL5 is attached at the lower part (FIG. 1).

The output end of the mold fixing/lifting device [5] is connected to the lower part of the inner cylinder 4, and the inner cylinder 4 slides up and down along the outer cylinder 3.

A locking mechanism as shown in FIGS. 2 and 3 is provided at the upper part of the inner cylinder 4, and the inner cylinder 4 is fixed to the lower mold 7 via the locking mechanism. In FIGS. 2 and 3, a plurality of claws 4α provided on the upper outer periphery of the inner cylinder 4 and the same number of claws 7α provided inside the lower mold 7 are activated by the action of the lock/unlock device 8. The attachment and detachment are performed by turning the inner cylinder side or the mold side.

FIG. 4 shows an example of operation on the mold side. For mold side operation,
The lock/unlock device 8 is attached to the mold changing device 11. In the case of operation on the inner cylinder side, the lock/unlock group f8 is attached to the vulcanizer main body 9 or the bladder operating device 2. For example, a mold exchange bag [11] as described in Japanese Patent Application No. 57-179771 is used to connect the molds 7 and 10 carried into the center of the machine to the mold fixing/lifting device 5. The inner cylinder 4 is inserted upward, and the lower metal part 7 and the inner cylinder 4 are locked by the locking device 8 (right hand side in FIG. 1). Release the mold changing device 11, activate the mold fixing/lifting device [5,
When the lower mold 7 and the locked inner cylinder 4 are pulled down, the lower mold 7 is accurately centered at the center of the machine by the mold centering mechanism 6 while the lower mold 7 is tilted downward.

The mold fixing/lifting device 5 generates a tensile force even after the lower mold 7 is set on the lower pressure plate 1, that is, it generates a force in the direction of lowering the lower mold, thereby moving the lower mold 7 onto the lower pressure plate 1. Fixed only to 1. after that.

The vulcanizer is closed and the upper mold 10 is fixed to the upper jaw pressure plate to complete the installation.

When removing the mold, the press is closed, the maxillary pressure plate and the upper mold 10 are unfixed, and the upper mold "0" is placed on the lower mold 7.

By operating the mold fixing/lifting device 5 in the upward direction, the fixation between the lower mold 7 and the mandibular pressure plate 1 is released, and the molds 7 and 10 held in the inner cylinder 4 are raised.

After the molds 7 and 10 have been raised, the mold exchange device 11 is placed on the lower surface thereof, and the lower mold 7 and the inner cylinder 4 are unlocked by the unlocking device 8.

After unlocking, the inner cylinder 4 is lowered or the mold changing device 11 is raised, and the molds 7 and 10 are carried out together with the mold changing device 11.

〔Effect of the invention〕

Not only does it reduce the mold change time, there is no need for workers to enter the machine, and remote control is possible, eliminating the risk of accidents.In addition, when combined with an automatic mold changer, it can be unmanned and save labor. It can also be measured. By incorporating the mold fixing and lifting device into the Pujdar operation device, it can be compactly integrated near the center of the machine.

[Brief explanation of the drawing]

FIG. 1 shows, in cross-section, an embodiment of a mold support device for a tire vulcanizer according to the present invention, with the right half in a lifted state and the left half in a fixed state. FIG. 2 is a sectional view showing a joint between the inner cylinder, the outer cylinder, and the lower mold. FIG. 3 is a sectional view taken along the line A-A in FIG. 2, and FIG. 4 shows an example in which a locking/unlocking device for a mold and an inner cylinder is installed in a mold changing device. 1... Lower Calo pressure plate, 2... Bladder operating device, 3
... Outer cylinder, 4 ... Inner cylinder, 5 ... Mold fixing and lifting device, 4α, 7α ... Claw, 8 ... Locking and unlocking device 2 people

Claims (1)

[Claims] It has an outer cylinder supported by a lower pressure plate around the bladder operating device, and an inner cylinder that is removably connected to the lower mold at the upper part and can be raised and lowered by being guided by the outer cylinder. A mold support device for a tire vulcanizer, characterized in that the lower mold is fixed to a lower pressure plate by lowering the cylinder, and when replacing the mold, the inner cylinder is raised to lift the mold.