JPH0740350A - Releasant spray device for tire vulcanizing machine - Google Patents

Abstract

PURPOSE:To uniformly apply a releasant to a releasant coating surface of an upper mold by providing a horizontally shaking arm mounted on an unloader for unloading a vulcanized tire and a spray mounted on the top of the horizontally shaking arm. CONSTITUTION:After completion of vulcanization, a mold is opened, and an unloader 2 is flung to the center of the mold by shaking a horizontally shaking arm 31. At this time, a spray equipment 3 is also flung to just under an upper mold. While a spray 47 mounted on the top of the horizontally shaking arm 31 is rotated, a releasant is sprayed from the spray 47 to a releasant coating surface of the upper mold to be applied to the releasant coating surface of the upper mold. In addition, for preventing an interference with an elongated bladder, the spray equipment 3 is flung when the unloader 2 is lowered to take a vulcanized tire after the bladder is peeled from the tire. In this manner, a releasant can be uniformly applied to a releasant coating surface of an upper mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a release agent spraying device for a tire vulcanizer.

[0002]

2. Description of the Related Art Conventionally, a vertical open / close type tire vulcanizer, especially a tire vulcanizing method called a standing post type in which a bladder is extended upward to peel the bladder from the inside of the vulcanized tire Although a fork-shaped unloader is often used in the machine, in a tire vulcanizer using the fork-shaped unloader, the release agent sprayer is attached to the tip of the fork or a bracket that moves in the same manner as the fork.

[0003]

In the above-mentioned conventional tire vulcanizer, since the release agent sprayer is attached to the tip of the fork or to the bracket that moves in the same manner as the fork, the release agent application surface of the upper die. It is difficult to evenly apply the release agent to the sprayer, and the sprayer is loosely attached due to the swinging of the fork when the tire is peeled from the lower mold.

Further, in a tire vulcanizer using a swing type unloader, the tire gripping portion of the unloader must have a donut shape in order to prevent interference with the expanded bladder when the vulcanized tire is carried out. It is also necessary to install a plurality of sprayers at positions where they do not interfere with the bladder, and there is a problem that jet flows of adjacent sprayers interfere with each other and the spray air flow is disturbed.

The present invention is proposed in view of the above problems, and the object thereof is to uniformly apply the release agent to the release agent application surface of the upper die. Even in a standing post type tire vulcanizer, the release agent can be applied to the release agent application surface of the upper mold while avoiding interference with the extended bladder. Another object of the present invention is to provide a mold release agent spraying device for a tire vulcanizer that can be easily applied to a twin tire vulcanizer having two large molds with limited installation space.

[0006]

In order to achieve the above object, the present invention provides a mold releasing agent spraying device for a tire vulcanizer, which sprays a mold releasing agent onto an upper mold attached to a tire vulcanizer. ,
An unloader for taking out a vulcanized tire is provided with a horizontal swing arm attached so as to be swingable in the horizontal direction, and a sprayer attached to a tip end portion of the horizontal swing arm.

The sprayer may be rotatably attached to the tip of the horizontal swing arm. The horizontal swing arm may be attached to the swing arm of the unloader so as to swing horizontally.

[0008]

The release agent spraying device for a tire vulcanizer of the present invention is constructed as described above, and when the vulcanization is completed, the mold is opened, and the unloader is swung into the center of the mold, the spraying device is also used. While swinging under the upper mold and rotating the sprayer,
Spray the release agent from the sprayer onto the release agent application surface of the upper mold,
The release agent is applied to the release agent application surface of the upper die. Also, after the bladder is peeled off from the vulcanized tire, when the unloader descends to pick up the tire, the spraying device is shaken out to prevent interference with the extended bladder.

[0009]

EXAMPLES Next, a release agent spraying device for a tire vulcanizer of the present invention will be described with reference to an example shown in FIGS. First, the unloader will be described with reference to FIGS. 1 and 2. 1 is a tire vulcanizer main body, 11 is the center of a mold 10, 2 is an unloader, and 22
Is a lifting table of the unloader 2, 21 is a linear bearing fixed to the lifting table 22, 20 is a rail fixed to the tire vulcanizer main body 1, 23 is a fluid pressure cylinder, and the linear bearing 21
Is engaged with the rail 20 and operates the fluid pressure cylinder 23 in the expansion / contraction direction to move the elevating table 22 up and down.

Reference numeral 25 denotes a swing arm which is horizontally swingable about a shaft 24 attached to the lifting table 22, and 26 denotes a fluid pressure cylinder interposed between the swing arm 25 and the lifting table 22. The cylinder 26 is operated in the extension / contraction direction to swing the swing arm 25 horizontally about the shaft 24. Reference numeral 27 is a vulcanized tire gripping device having a plurality of tire gripping claws 28 and a fluid pressure cylinder 29 for opening and closing the tire gripping claws 28. The vulcanized tire gripping device 27 is attached to the tip of the swing arm 25. Has been.

Next, the release agent spraying device will be described with reference to FIGS. 1 to 4. 3 is a release agent spraying device, and 31 is a swinging central axis 3.
A horizontal swing arm attached to the swing arm 25 via 0 to allow horizontal swing, and a fluid pressure cylinder 32 interposed between the horizontal swing arm 31 and the swing arm 25. The cylinder 32 is operated in the extension / contraction direction to horizontally swing the horizontal swing arm 31 about the shaft 30.

Reference numeral 40 denotes a boss fixed to the other end of the horizontal swing arm 31, 45 denotes a drip receiver of a release agent screwed to the upper end of the boss 40, and 41 denotes a shaft rotatably supported by the boss 40. 44 is a motor installed near the other end of the horizontal swing arm 31, 43 is a gear attached to the output shaft of the motor 44, 42 is a gear attached to the shaft 41 and meshed with the gear 43,
Reference numeral 46 is a bracket attached to the shaft 41, and 47 is a sprayer attached to the other end of the bracket 46.

Reference numeral 51 is a pipe extending from a release agent tank (not shown), 52 is a pipe connected to the pipe 51 via the solenoid valve 48 on the horizontal swing arm 31, and 53 is a throttle valve 49. The pipe connected to the pipe 52, 41b is the same pipe 5
3 is a passage in the shaft 41, 54 is a hose extending from the passage 41b to the sprayer 47, and the release agent is a release agent tank →
Piping 51 → Solenoid valve 48 → Piping 52 → Throttle valve 49 → Piping 5
3-> passage 41b in shaft 41-> hose 54 and then sprayer 4
Guided to 7.

55 is a pipe extending from a spraying air tank (not shown), and 56 is a solenoid valve 50 on the horizontal swing arm 31.
A pipe connected to the pipe 55 through the pipe 41, a passage 41a in the shaft 41 connected to the pipe 56, and a hose 57 extending from the passage 41a to the sprayer 47. The electromagnetic valve 50 → the pipe 56 → the passage 41a in the shaft 41 → the hose 57 is introduced to the atomizer 47.

In this embodiment, the swing center shaft 30 of the horizontal swing arm 31 is connected to the swing arm 25 of the unloader 2.
Although there is no restriction on the space between the swing arm 25 and the other members, the swing center shaft 30 is shared with the shaft 24, and the swing arm 25 and the horizontal swing arm 31 are connected to each other.
You may arrange in a step. Instead of rotating the atomizer 47, a plurality of atomizers may be attached, or an atomizer having a conical spray flow may be attached.

Next, the operation of the release agent spraying device for a tire vulcanizer shown in FIGS. 1 to 4 will be specifically described. When vulcanization is completed and the mold begins to open (when the upper mold starts to rise), the fluid pressure cylinder 23 is operated in the extension direction to raise the unloader 2 to a predetermined height and the mold finishes opening. And actuating the fluid pressure cylinders 26 and 32 to horizontally swing the horizontal swing arm 25 to swing the vulcanized tire gripping device 27 into the mold center 11 and swing the horizontal swing arm 31. Move the center of the shaft 41 to the mold center 1
Move to 1.

Then, the motor 44 is started, and its rotation is transmitted to the gear 43 → the gear 42 → the shaft 41 to rotate the bracket 46 and the sprayer 47 about the shaft 41, and the solenoid valves 48, 50 are opened and separated. Release the mold release agent tank → piping 5
1 → Solenoid valve 48 → Piping 52 → Throttle valve 49 → Piping 53 → Passage 41b in the shaft 41 → Hose 54 while guiding it to the sprayer 47, while spraying air tank → Spraying air tank → Piping 55 → Solenoid valve 50 → Piping 56 → passage 41a in the shaft 41 → hose 5
7 to the sprayer 47, and the release agent is sprayed from the sprayer 47 onto the release agent coating surface of the upper mold by spraying air to apply the release agent to the release agent coating surface of the upper mold.

When the release agent has been applied, the solenoid valve 4
8 and 50 are closed, and the fluid pressure cylinder 32 is operated in the opposite direction to swing the release agent spraying device 3. During this time, the bladder is extended to peel and remove the bladder from the inside of the vulcanized tire. Next, the fluid pressure cylinder 23 is operated in the contraction direction, and the unloader 2 is lowered to grip the vulcanized tire.

[0019]

The release agent spraying device for a tire vulcanizer of the present invention is constructed as described above, and sprays when vulcanization is completed, the mold is opened, and the unloader is swung into the center of the mold. The device is also swung right under the upper mold to rotate the sprayer, while spraying the release agent from the sprayer to the release agent application surface of the upper mold, and the release agent is applied to the release agent application surface of the upper mold. The release agent can be evenly applied to the release agent application surface of the upper die.

Further, the spraying device is attached to the unloader so as to be horizontally swingable, and even in the standing post type tire vulcanizer, the release agent is applied to the release agent coating surface of the upper mold while avoiding interference with the extended bladder. Can be applied to. In addition, the swing center axis of the spraying device is attached to the swing arm of the unloader,
It can be easily applied to twin tire vulcanizers that have two large molds with limited installation space.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a release agent spraying device for a tire vulcanizer of the present invention.

FIG. 2 is a plan view of the release agent spraying device for the tire vulcanizer.

FIG. 3 is a plan view showing details of the release agent spraying device for the tire vulcanizer.

4 is a vertical cross-sectional side view taken along the line AA of FIG.

[Explanation of symbols]

 2 Unloader 3 Release agent spraying device 25 Swing arm 31 Horizontal swing arm 32 Fluid cylinder for swinging arm 41 Rotating shaft 44 Rotating motor 47 Sprayer

Claims (3)

[Claims] 1. A release agent spraying device for a tire vulcanizer, which sprays a release agent onto an upper mold attached to a tire vulcanizer, and swings horizontally in an unloader for taking out a vulcanized tire. A releasing agent spraying device for a tire vulcanizer, which comprises a horizontal swing arm that is attached to the horizontal swing arm and a sprayer that is attached to the tip of the horizontal swing arm. 2. The mold release agent spraying device for a tire vulcanizer according to claim 1, wherein the sprayer is rotatably attached to a tip end portion of the horizontal swing arm. 3. The release agent spraying device for a tire vulcanizer according to claim 1, wherein the horizontal swing arm is attached to a swing arm of an unloader so as to swing horizontally.