CN2623437Y - Novel vacuum injection molding mechanism - Google Patents

Abstract

The utility model discloses a novel vacuum injection molding mechanism. It consists of a lifting and stirring mechanism, a pouring mechanism and a pressure injection mechanism. The lifting and stirring mechanism adopts a lifting stirrer and is installed above a container pouring cup A in a liftable manner; the pouring mechanism consists of a container pouring cup A and a container pouring cup B, and the container pouring cup A for pouring molding materials is located on one side of the lifting stirrer and above the container pouring cup B; the pressure injection mechanism consists of an injection box, a push piston and a molding mold. A funnel for receiving molding materials from the container pouring cup B is arranged above the injection box and below the container pouring cup B, and the push piston is installed in the injection box. The utility model can effectively press the molding material into the molding cavity and make the molding material fully fit the molding cavity, thereby obtaining molds and parts products with excellent quality, meeting the needs of rapid manufacturing of molds and parts.

Description

A New Vacuum Injection Mechanism

technical field

The utility model relates to a novel vacuum injection molding mechanism for rapidly manufacturing molds and parts.

Background technique

At present, in the vacuum casting equipment used in rapid mold manufacturing technology, its core mechanism is generally composed of a vacuum pump, a molding material container, an agitator, a funnel, and a molding cavity. During the molding process of this mechanism system, the molding material is first placed in the molding material container to evacuate and stir, and then the vacuum is used to form a negative pressure to inject the molding material into the molding cavity. This molding mechanism has the following disadvantages: Generally, the materials used for vacuum injection molding mostly use a mixture of resin, plastic and corresponding accelerators, catalysts, etc. Therefore, the fluidity of the material is poor and the curing speed is fast, which causes In addition, under the action of vacuum negative pressure, the material cannot be fully filled into the molding cavity, so the quality of the molding parts is poor. This disadvantage is particularly prominent in the manufacture of thin-walled or large-scale molds and parts.

Utility model content

In order to overcome the above-mentioned shortcomings of existing vacuum injection molding machines, the utility model provides a novel vacuum injection molding mechanism capable of fully filling the molding cavity with molding materials.

The technical scheme adopted by the utility model to solve the technical problems is: it is composed of a lifting and stirring mechanism, a pouring mechanism and a pressure pouring mechanism, and its characteristic is that: the lifting and stirring mechanism adopts a lifting stirrer, which can be lifted and installed on the container pouring cup A Above; the pouring mechanism is composed of a container pouring cup A and a container pouring cup B. The container pouring cup A for pouring molding materials is located on the side of the lifting agitator and above the container pouring cup B; the pressure filling mechanism is a piston push type pressure filling mechanism , consisting of a pouring box, a pusher piston and a molding die. A funnel that can receive the molding material from the pouring cup B of the container is arranged above the pouring box. Below the pouring cup B of the container, the pusher piston is installed in the pouring box. The pouring box The body communicates with the forming mold through the output pipeline.

The functions, interconnections and cooperative relations of each component part of the utility model are as follows:

The container pouring cup A is used to hold the molding material, and the molding material is poured into the container pouring cup B under the drive of the motor; the container pouring cup B receives the molding material from the container pouring cup A, and then uses the lifting and stirring mechanism to stir the molding material ; The pressure filling mechanism is used to receive the molding material sent by the container pouring cup B, and then press the molding material into the molding cavity through the output pipeline under the action of the advancing piston.

The beneficial effects of the utility model are:

1. It has the characteristics that the molding material fully fills the molding cavity. Compared with the prior art that uses the negative pressure formed by unloading the vacuum to press the molding material into the molding cavity, the vacuum injection mechanism of the utility model uses the pressure filling mechanism to effectively press the molding material into the molding cavity, so that the molding material It is the key technology to fully fit the molding cavity and realize the molding material fully filling the molding cavity, so as to obtain high-quality molds and parts.

2. The overall structure of the utility model is simple, easy to design and manufacture, and can be applied to places where molds and parts are rapidly manufactured.

Description of drawings

Fig. 1 is a structural diagram of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, structure of the utility model and working process thereof are described in further detail.

As shown in Figure 1, the utility model is composed of a lifting stirring mechanism, a pouring mechanism and a pressure pouring mechanism, wherein: the lifting stirrer 1 is installed above the container pouring cup B3 in a liftable manner, and the lifting stirring mechanism adopts the lifting stirrer 1, It can be lifted and installed above the container pouring cup A2, and the molding material in the container pouring cup B3 is stirred by the stirrer. The pouring mechanism is composed of the container pouring cup A2 and the container pouring cup B3. The top of the container pouring cup B3; the pressure filling mechanism 4 is a piston-propelled pressure filling mechanism, which can be divided into: filling box 41, pushing piston 42 and forming mold 44, and a top of the filling box 41 can receive the mold from the container pouring cup B3. The funnel of the material is placed on the side and below of the container pouring cup B3, and the propelling piston 42 is installed in the filling box 41, and the filling box 41 communicates with the molding die 44 through the output pipeline 43.

The container pouring cup A2 and the container pouring cup B3 are used to hold the molding materials, and can complete the pouring action under the drive of the motor; the lifting agitator 1 is used to stir the molding materials in the container pouring cup B3, and it will be lifted up automatically after the stirring is completed; the pressure The pouring mechanism 4 receives the molding material sent by the pouring cup B3 of the container;

The working process of the utility model is:

According to the curing requirements of the molding mold material or part material, mix the materials in a certain proportion and put them into the container pouring cup A2, vacuumize, and then slowly pour the molding material in the container pouring cup A2 into the container pouring cup B3, while Continue vacuuming while stirring until the materials are evenly mixed, then send them into the pressure pouring box 41, and finally inject them into the forming mold 44 or the mold frame through the output pipeline 43 under the action of the pushing piston 42.

The utility model adopts a piston push-type pressure filling mechanism. Because the push pressure of the piston can be adjusted well, it can obtain good mold-fitting properties of the molding material, so the molding precision of the workpiece is high, and it also solves the problem of the existing vacuum injection filling mechanism. problems with the organization.

Claims (2)

1. a novel evacuated forming machine structure is formed by promoting rabbling mechanism, tipping mechanism and pressure injection mechanism, and it is characterized in that: described lifting rabbling mechanism adopts lift agitator (1), liftably is installed in container and topples over a glass A (2) top; Tipping mechanism is toppled over a glass A (2), container by container and is toppled over a glass B (3) and constitute, and the container that is used to topple over moulding material is toppled over a glass A (2) and is positioned at lift agitator (1) one side, topples over a glass B (3) top in container; Pressure injection mechanism (4) is the pusher pressure injection of a piston mechanism, form by perfusion casing (41), propelling piston (42) and mould (44), perfusion casing (41) top establish one can receive from container topple over the moulding material of a glass B (3) funnel, topple over a glass B (3) below in container, propelling piston (42) is installed in perfusion casing (41) lining, and perfusion casing (41) communicates with mould (44) by output pipe (43).

2. according to the described novel evacuated forming machine structure of claim 1, it is characterized in that: described lift agitator (1) adopts the lodicule formula agitator of 5 grades of adjustable speeds, degree of heightening.