Application of SOLIDOT I/O module series products in automated production line of shoe spraying treatment agent and spraying glue

The shoe bonding process is the most important step in shoemaking. Also known as the cold bonding process, it uses adhesive to join the upper, insole, and outsole together.

Since the bonding surface materials of the upper and sole differ, the type and properties of the adhesive used also vary. The bonding process offers advantages such as simple procedures, short production cycles, high production efficiency, low manufacturing costs, and ease of scaling up production. As a result, it is the most widely used assembly process in the shoemaking industry, accounting for over 80 % of total shoe production.

Introduction to shoemaking-related equipment

[1] Motion control card: Omron CK3E

[2] Servo: Inovance

[3] Sole spray treatment agent and spray adhesive equipment

[4] Upper coating treatment agent and coating adhesive equipment

[5] Automated production line

Description of the shoe spraying treatment agent and spray adhesive process

[1] Shoe upper roughening station: Raw materials are loaded into the specified location in the loading area, roughened and dedusted on the conveyor belt, and then picked up by the robotic arm to the shoe upper treatment agent spraying station.

[2] Shoe upper treatment agent spraying station: The treatment agent is sprayed onto the shoe upper, and the sprayed upper is transferred by the conveyor belt to the oven for baking, then picked up by the robotic arm to the shoe upper glue spraying station.

[3] Shoe sole treatment agent spraying station: 3D vision processing is performed on the conveyor belt to calculate the spraying path, then the sole treatment agent is sprayed, and the sole is picked up by the robotic arm to the shoe sole glue spraying station.

[4] Shoe upper glue spraying station: Glue is sprayed onto the shoe upper, then picked up by the robotic arm to the press-fit heat treatment station.

[5] Shoe sole glue spraying station: Glue is sprayed onto the shoe sole, then picked up by the robotic arm to the press-fit heat treatment station.

[6] Press-fit heat treatment station: 3D vision screens out soles and uppers with irregular glue spraying, then performs heat press-fit treatment.

Application of Real Point Technology remote I/O in shoe-making equipment

The sole, upper treatment agent spraying, and glue spraying stations use the Omron CK3E motion control card, Inovance 630 Servo Motor, and Real Point Technology XB6 Series Slice I/O modules for control and communication.

During equipment operation, all sensor detection signals are collected by the XB6-1616A module, actuator signals such as cylinders are controlled by the XB6-0008A module, analog signals are collected by the XB6-A40I, and the Servo Motor controls the conveyor belt to feed materials.

The shoe and bag treatment agent coating and glue coating equipment uses a set of XB6-EC series modules.

Configuration of Real Point Technology remote I/O in the standard shoe-making production line

The production line consists of numerous workstations connected by conveyor belts and robotic arms, with a large number of signals from cylinders, photoelectric switches, proximity switches, etc. It is characterized by a large number of signals, scattered installation locations, and high protection rating requirements.

The main control of the production line uses a Siemens 1500 PLC, and the Real Point Technology IP67 bus I/O series product — PN7 Series Integrated I/O Modules — is used to solve this.

B sensor detection signals are collected by the PN7-1600B module, and actuator signals such as cylinders are controlled by the PN7-0808B module.

The auxiliary electrical box uses PN4-1616B to achieve data exchange between the production line and workstations.