Fluid pressure-feed device

Patent metadata

Field	Value
Publication number	US-11377340-B2
Application number	US-201916377317-A
Country	US
Kind code	B2
Filing date	Apr 8, 2019
Priority date	Apr 11, 2018
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

A fluid pressure-feed device includes a main tank and a sub tank. The sub tank is connected integrally with an upper portion of a main follower plate that applies pressurizing force to a urethane adhesive inside the main tank. A drum pump is provided in an upper portion of a sub follower plate provided in the sub tank. While the urethane adhesive is flowing into the sub tank from the main tank, the urethane adhesive is fed under pressure from the sub tank to a fluid passage by actuation of the drum pump. While the main tank is being replaced, the urethane adhesive inside the sub tank is fed under pressure to the fluid passage by the drum pump.

First claim

What is claimed is:

1. A fluid pressure-feed device that feeds a fluid under pressure to a fluid passage, the device comprising:
a main tank configured to be filled with the fluid;
a main follower plate that applies a first pressurizing force to the fluid inside the main tank;
a sub tank into which the fluid forced out from the main tank flows, the sub tank being provided integrally with the main follower plate;
a pump that feeds the fluid inside the sub tank under pressure toward the fluid passage;
a sub follower plate configured to apply a second pressurizing force to the fluid inside the sub tank to force the fluid toward the pump during a replacement operation of the main tank;
a check valve disposed in the main follower plate comprising:
a check plate, and
a spring disposed between and contacting a joint plate attached to a lower surface of the sub tank and the check plate, the spring being configured to apply a biasing force to the check plate;

a body disposed above the pump;
at least one first cylinder comprising a piston rod, the at least one first cylinder having a lower end connected to a top end of the pump and further having an upper end connected to the body, the at least one first cylinder configured to, when actuated, vertically move the sub follower plate and the pump with respect to the sub tank, wherein
the check valve is configured to open when a pressure of the fluid inside the main tank becomes a given value or higher.

2. The fluid pressure-feed device according to claim 1 , wherein a capacity of the sub tank is set so as to be smaller than a capacity of the main tank and also larger than a required amount of the fluid by a given value, the required amount of the fluid being an amount of the fluid to be fed under pressure toward the fluid passage during the replacement operation of the main tank.

3. The fluid pressure-feed device according to claim 1 , wherein the joint plate comprises an opening in the center of the joint plate to allow fluid to pass from the main tank to the sub tank.

4. The fluid pressure-feed device according to claim 1 , further comprising:
at least one second cylinder comprising a piston rod, the at least one second cylinder having an upper end connected to the body and configured to, when actuated, vertically move the main follower plate, the sub tank, the sub follower plate, and the pump by vertically moving the body.

5. The fluid pressure-feed device according to claim 4 , further comprising:
at least one tie rod having a lower end connected to the main follower plate, and further having an upper end connected to the body,
wherein the at least one second cylinder is configured to move the main follower plate by vertically moving the at least one tie rod by vertically moving the body.

6. The fluid pressure-feed device according to claim 1 , wherein the main follower plate comprises a heater.

Assignees

• Toyota Motor Co Ltd
• Pyles Japan Co Ltd

Inventors

• Tasaka Masahiro
• Makino Rikiya
• Suzuki Takashi
• Urashi Takatoshi
• Suzuki Shouji

Classifications

• B05C11/101

  responsive to weight of a container for liquid or other fluent material; responsive to level of liquid or other fluent material in a container · CPC title

• B05C11/11

  Vats or other containers for liquids or other fluent materials · CPC title

• B05D7/14

  to metal, e.g. car bodies (involving a chemical reaction between the metal and the coating C23) · CPC title

• B05C11/1047 Primary

  Apparatus or installations for supplying liquid or other fluent material comprising a buffer container or an accumulator between the supply source and the applicator · CPC title

• B67D7/645

  Barrel pumps · CPC title