Plastic chairs are generally formed by one-time injection molding of plastic molds. They are called Plastic Chair Injection Moulds. They are characterized by fast processing speed, low cost, and recyclability. They are widely used in restaurants, tourist attractions, conference rooms, and homes. In the existing injection molds for plastic chairs, one set of molds can generally only produce one style of chair. To make the chair products diversified and rich in appearance to meet the needs of different customers, it is necessary to develop multiple sets of molds, so mold manufacturing costs High, high production input cost.
The purpose of the present invention is to overcome the shortcomings of the prior art and provide an interchangeable multi-purpose injection mold for processing plastic chairs with low mold investment cost, diversified chairs manufactured, and rich shapes. The technical scheme of the interchangeable multi-purpose injection mold for processing plastic chairs of the present invention includes: a fixed template and a movable template, the fixed mold is installed under the fixed template, the movable mold and guide posts are installed on the movable template, and fixed blocks are installed on both sides of the movable mold. A cavity is set on the movable mold. There is an injection molded plastic chair between the cavity and the fixed mold. Lifting cylinders are installed on both sides of the cavity. The piston rod of the lifting cylinder is connected with the fixed block. There is an ejector plate in front of the cavity. An ejector rod is installed on one side of the ejector plate, and an ejector bracket is installed on the other side of the ejector plate. An ejector cylinder is installed on the ejector support. The piston rod of the ejector cylinder is connected with the cavity, and the ejector rod is driven by the ejector cylinder. The head of the ejector rod is in contact with the injection-molded plastic chair, and is characterized in that the movable mold is located at the back of the chair to install the seat back inserts, and both sides of the movable mold are located at the armrest of the chair. The piston rod of the oil cylinder is driven, and the blocking block is matched with the glue inlet at the armrest of the movable mold. The invention discloses an interchangeable multi-purpose injection mold for processing plastic chairs. After the plastic chair is injection molded, the movable mold is driven by a movable template to move down, the movable mold drives the cavity to move down, and the mold is opened and then lifted The piston rod of the oil cylinder is pressed against the fixed block of the movable mold, and the lifting cylinder drives the cavity to move upward along the guide post. Finally, the ejector cylinder drives the ejector bracket and ejector plate, and the ejector plate drives the ejector rod. The rod ejects the injection molded plastic chair out of the cavity and demolds. The main feature of this solution is to install the seat back insert at the position where the movable mold is located on the back of the chair. The seat back insert can be manually removed. When a plastic chair with a different style of chair back is to be manufactured, only the seat back insert is required. Re-developing different molds to reduce mold development costs; and install block cylinders at the armrests of the chair on both sides of the movable mold. The piston rod of the block cylinder connects to the block, and the block is matched with the glue inlet at the armrest of the movable mold. When manufacturing a plastic chair without armrests, use the block cylinder to drive the block block to block the rubber inlet at the armrest, so that the plastic cannot flow in. The molded plastic chair does not have armrests. When manufacturing a plastic chair with armrests, just The block cylinder is driven to move the block to the outside, so that it does not block the rubber inlet at the armrest, and the rubber can flow into the cavity at the armrest, so that the injection molded plastic chair has an armrest, which is very convenient to manufacture. The interchangeable multi-purpose injection mold for processing plastic chairs of the present invention, wherein the upper surface of the seat back insert is a smooth surface or a horizontal convex surface or a grid convex surface or a vertical convex surface or a circular convex surface. The back inserts can be replaced according to customer needs to manufacture plastic chairs with different shapes of backs.
(1) Interchangeable multi-purpose injection mold for processing plastic chairs, including fixed template and movable template. The fixed mold is installed under the fixed template, the movable mold and guide post are installed on the movable template, and the fixed blocks are installed on both sides of the movable mold. Set the cavity, there is an injection molded plastic chair between the cavity and the fixed mold, install lifting cylinders on both sides of the cavity, the piston rod of the lifting cylinder is connected with the fixed block, there is an ejector plate in front of the cavity, one ejector plate Install the ejector rod on the side, install the ejector bracket on the other side of the ejector plate, install the ejector cylinder on the ejector bracket, the piston rod of the ejector cylinder is connected with the cavity, and the ejector rod is driven by the ejector cylinder to eject the rod. The head is in contact with the injection-molded plastic chair, characterized in that: the movable mold is located at the back of the chair to install the seat back inserts, and the two sides of the movable mold are located at the armrest of the chair. Blocking blocks are set up by the piston of the block cylinder. Driven by the rod, the blocking block is matched with the glue inlet at the armrest of the movable mold.
(2) An interchangeable multi-purpose injection mold for processing plastic chairs, characterized in that: the upper surface of the seat back insert is smooth or horizontal rib surface or grid rib surface or vertical rib surface or round Convex noodles.
The interchangeable multi-purpose injection mold for processing plastic chairs includes fixed and movable molds, a stable mold under the fixed mold, a movable mold and a guide post on the movable mold, fixed blocks on both sides of the movable mold, and a cavity on the movable mold. There is an injection molded plastic chair between the cavity and the fixed mold. Lifting cylinders are installed on both sides of the cavity. The piston rod of the lifting cylinder is connected with the fixed block. There is an ejector plate in front of the cavity, and an ejector rod is installed on one side of the ejector plate. The ejector bracket is installed on the other side of the ejector plate, the ejector cylinder is installed on the ejector support, the piston rod of the ejector cylinder is connected with the cavity, the ejector rod is driven by the ejector cylinder, and the head of the ejector rod is injection molded The plastic chair is in contact with each other, characterized in that the movable mold is located at the back of the chair to install the seat back inserts, and the two sides of the movable mold are located at the armrest of the chair. Blocking blocks are set up. The blocking blocks are driven by the piston rod of the blocking block cylinder. The rubber inlet of the mold armrest matches.