CN103223713B - The multiplex injection mold of interchangeable of processing plastic chair - Google Patents

Abstract

Interchangeable multi-purpose injection mold for processing plastic chairs, including fixed template and movable template, fixed mold under the fixed template, movable mold and guide pillars on the movable template, fixed blocks on both sides of the movable mold, cavity 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, and the piston rod of the lifting cylinder is connected to the fixed block. There is an ejector plate in front of the cavity, and an ejector rod is installed on the side of the ejector plate. The other side of the ejector plate is equipped with an ejector bracket, and an ejector cylinder is installed on the ejector bracket. 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 connected with the injection molding The plastic chair is in contact with each other, and it is characterized in that the movable mold is located at the back of the chair and the seat back insert is installed, and the two sides of the movable mold are located at the position of the armrest of the chair. Match the glue inlet at the handrail of the mold.

Description

Interchangeable multi-purpose injection mold for processing plastic chairs

technical field

The invention relates to an injection mold for processing plastic chairs, in particular to an interchangeable multi-purpose injection mold for processing plastic chairs.

Background technique

Plastic chairs are generally injection molded through plastic molds at one time. They have the characteristics of fast processing speed, low cost, and recyclability. They are widely used in restaurants, tourist attractions, meeting rooms, and homes. Existing injection molds for plastic chairs, one pair of molds can generally only produce one style of chairs. If you want to make chair products diversified, rich in shape, and meet the needs of different customers, you need to develop multiple sets of molds, so the mold manufacturing cost High, high production input costs.

Contents of the invention

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 and rich shapes.

The technical scheme of the interchangeable multi-purpose injection mold for processing plastic chairs of the present invention is: comprising a fixed template and a movable template, a fixed mold is installed under the fixed template, a movable mold and guide pillars 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, and 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 to the fixed block. There is an ejector plate in front of the cavity. The ejector rod is installed on one side of the ejector plate, and the ejector bracket is installed on the other side of the ejector plate. The ejector cylinder is installed 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. The head of the ejector rod is in contact with the injection-molded plastic chair, and it is characterized in that: the movable mold is positioned at the back of the chair to install the chair back insert, and the two sides of the movable mold are positioned at the position of the armrest of the chair to set blocking blocks, and the blocking blocks are made of Driven by the piston rod of the oil cylinder, the blocking block matches the glue inlet at the handrail of the moving mold.

The invention discloses an interchangeable multi-purpose injection mold for processing plastic chairs. After the plastic chair is injection molded, the movable template drives the movable mold to move downward, the movable mold drives the mold cavity to move downward, the mold is opened, and then the lifting The piston rod of the oil cylinder is pushed against the fixed block of the movable mold, and the cavity is moved upwards along the guide column through the lifting cylinder, and finally the ejector bracket and the ejector plate are driven by the ejector cylinder, and the ejector plate drives the ejector rod, and the ejector rod is driven by the ejector The ejector rod pushes the injection molded plastic chair out of the mold cavity for demoulding. The main feature of this solution is to install the seat back insert at the position of the movable mold at the back of the chair. The seat back insert can be removed manually. When it is necessary to manufacture plastic chairs with different styles of seat backs, it is only necessary to replace the seat back insert without Redevelop different molds to reduce the cost of mold development; and install block cylinders on both sides of the movable mold at the position of the armrest of the chair. When making plastic chairs without armrests, use the block cylinder to drive the block to block the glue inlet at the armrests, so that the rubber cannot flow in, and the molded plastic chairs will have no armrests. When you want to manufacture plastic chairs with armrests, just The blocking oil cylinder drives the blocking block to move to the outside, so that it does not block the rubber inlet at the armrest, and the rubber material can flow into the cavity at the armrest, so that the injection molded plastic chair has armrests, which is very convenient to manufacture.

According to the interchangeable multi-purpose injection mold for processing plastic chairs of the present invention, the upper surface of the chair back insert is a smooth surface or a horizontal rib surface or a grid convex surface or a vertical rib surface or a circular convex surface. The chair back inserts can be replaced according to customer needs, and plastic chairs with different shapes of backs can be manufactured.

Description of drawings

Fig. 1 is the three-dimensional schematic view of the interchangeable multi-purpose injection mold for processing plastic chairs;

Fig. 2 is another three-dimensional schematic diagram of an interchangeable multi-purpose injection mold for processing plastic chairs;

Fig. 3 is a three-dimensional schematic diagram of the mold cavity moving up and the plastic chair ejecting state;

Fig. 4 is a schematic side view of the mold cavity moving up and the plastic chair ejecting state;

Fig. 5 is a three-dimensional schematic view of short horizontal ribs formed on the chair back insert.

detailed description

The invention relates to an interchangeable multi-purpose injection mold for processing plastic chairs, as shown in Figures 1-5, comprising a fixed template and a movable template, a fixed mold is installed under the fixed template, and a movable mold 2 and a guide post 3 are installed on the movable template 1 , fixed blocks 4 are installed on both sides of the movable mold, a cavity 5 is set on the movable mold, an injection-molded plastic chair 6 is arranged between the cavity and the fixed mold, and a lifting cylinder 7 is installed on both sides of the cavity, the piston rod of the lifting cylinder and the The fixed blocks 4 are connected with each other, and there is an ejector plate 8 in front of the cavity, an ejector rod 9 is installed on one side of the ejector plate, an ejector bracket 10 is installed on the other side of the ejector plate, and an ejector oil cylinder 11 is installed on the ejector bracket to eject The piston rod of the oil cylinder is connected with the mold cavity 5, the ejector rod is driven by the ejector cylinder 11, and the head of the ejector rod 9 is in contact with the injection-molded plastic chair 6. It is characterized in that: the movable mold 2 is located on the chair back Seat back insert 12 is installed in the position, and block 14 is arranged at chair armrest position on both sides of movable mold, and block is driven by the piston rod of block oil cylinder 13, and block and movable mold 5 handrail places glue inlet match. After the plastic chair 6 is injection molded, the movable mold 1 drives the movable mold 2 to move downward, the movable mold drives the cavity 5 to move downward, the mold is opened, and then the piston rod of the lifting cylinder 7 pushes against the fixed block of the movable mold 2 4, the lifting cylinder 7 drives the cavity 5 to move upward along the guide column 3, and finally the ejector cylinder 7 drives the ejector bracket 10 and the ejector plate 8, and the ejector plate drives the ejector rod 9, and the ejector rod moves The injection-molded plastic chair 6 is ejected from the mold cavity 5 for demoulding. The main feature of this scheme is that the seat back insert 12 is installed at the seat back position of the movable mold 2, and the seat back insert can be removed manually. That is, there is no need to redevelop different molds, reducing the cost of mold development; and installing a block oil cylinder 13 at the position of the armrest of the chair on both sides of the movable mold 2, the piston rod of the block oil cylinder is connected to the block 14, and the block is connected to the armrest of the movable mold 2 Cooperate with the glue inlet at the handrail, when the plastic chair 6 without armrest is to be manufactured, the block 14 is driven by the block oil cylinder 13 to block the glue inlet at the handrail, so that the glue cannot flow in, and the formed plastic chair has no armrest. When the plastic chair 6 with armrest is to be manufactured, as long as the block cylinder 13 drives the block 14 to move to the outside so that it does not block the glue inlet at the armrest, the rubber material can flow into the cavity 5 at the armrest, so that the injection molded Plastic chair 6 just has armrest, makes very convenient. The upper surface of the chair back insert 12 is a smooth surface or a horizontal rib surface or a grid rib surface or a vertical rib surface or a circular rib surface. The chair back insert 12 can be replaced according to customer needs to manufacture plastic chairs with different shapes of chair backs.

Claims (1)

1. the multiplex injection mold of the interchangeable of processing plastic chair, comprise solid plate and moving platen, under solid plate, cover half is installed, moving platen (1) is installed dynamic model (2) and guide pillar (3), in dynamic model both sides, fixed block (4) is installed, dynamic model is arranged die cavity (5), the Plastic chair (6) of injection mo(u)lding is had between die cavity and cover half, in die cavity both sides, hoist cylinder (7) is installed, the piston rod of hoist cylinder is connected with fixed block (4), liftout plate (8) is had before die cavity, knock-pin (9) is installed in liftout plate side, liftout plate opposite side is installed and is ejected support (10), eject on support and ejection cylinder (11) is installed, the piston rod of ejection cylinder is connected with die cavity (5), knock-pin is driven by ejection cylinder (11), the head of knock-pin (9) contacts with the Plastic chair (6) of injection mo(u)lding, described dynamic model (2) is positioned at seat-back position and installs chair back insert (12), it is characterized in that: dynamic model both sides are positioned at armrests position and arrange sprue (14), sprue is driven by the piston rod of sprue oil cylinder (13), sprue matches with dynamic model (5) arm rest glue-feeder, when to manufacture do not have armed Plastic chair (6) time, sprue (14) is driven to block arm rest glue-feeder by sprue oil cylinder (13), sizing material cannot be flowed into, Plastic chair after shaping does not just have handrail, when armed Plastic chair (6) will be manufactured, as long as drive sprue (14) to move laterally by sprue oil cylinder (13), it is made not block arm rest glue-feeder, sizing material just can flow into arm rest die cavity (5), thus the Plastic chair of injection mo(u)lding (6) just has handrail, described chair back insert (12) be above light face or horizontal stripe convex tendon face or grid convex tendon face or vertical bar convex tendon face or circular rib face.