CN204505711U - A kind of Split type die sprue bush - Google Patents

Abstract

A sprue bushing for a split mold, comprising a sprue bushing body and a positioning part fixed on the upper end of the sprue bushing body; a sprue is provided at the center of the sprue bushing body, and a gap between the inner wall of the sprue bushing body and the sprue The formed cavity is provided with two or more annular cooling channels around the main channel, and the sprue bushing body is provided with a water inlet and a water outlet communicating with the annular cooling channels. The utility model has a simple structure, mainly by improving the single circulation waterway of the existing sprue bushing into two ring-shaped waterways around the main channel to enhance the cooling effect, because the split structure of the positioning part and the sprue bushing body is adopted Moreover, a card slot is provided on the positioning part, which reduces the difficulty of the manufacturing process while positioning the sprue sleeve, and reduces the manufacturing cost by more than 1/3 compared with the prior art.

Description

A split mold sprue sleeve

technical field

The utility model relates to the field of mold pouring systems, in particular to a split mold sprue sleeve.

Background technique

The sprue sleeve is also called the sprue, the sprue, and the sprue. It is a part of the runner that allows the molten plastic material to be injected from the nozzle of the injection molding machine into the inside of the mold. It is used to connect the molding mold and the metal fittings of the injection molding machine. Existing sprue sleeves usually adopt single water circuit circulation, the cooling speed is relatively slow, and the effect is not ideal, and the positioning part of the existing sprue sleeve is integrated with the sprue sleeve body, and the manufacturing cost is relatively high.

Contents of the invention

The purpose of the utility model is to provide a split mold sprue sleeve with simple structure, good cooling effect and low manufacturing cost.

The technical scheme adopted by the utility model to solve the problems of the prior art: a split mold sprue bushing, including a sprue bushing body and a positioning part fixed on the upper end of the sprue bushing body; the center of the sprue bushing body is provided with The sprue, the cavity formed between the inner wall of the sprue bushing body and the sprue is provided with two or more annular cooling channels around the sprue, and the sprue bushing body is provided with inlets connected to the annular cooling channels. Water inlet and outlet.

The annular cooling water channel is formed by a plurality of straight pipes with one end closed and fixed on the inner wall of the sprue bushing body and the other end inserted into an adjacent straight pipe to form an interconnected annular water channel.

The upper end of the sprue sleeve body is provided with a flange, and the lower end of the positioning part is provided with a card slot matching the flange, so that the positioning part is clamped on the sprue sleeve body; The bodies of the sprue sleeves are tightly connected together by positioning pins and screws.

The beneficial effects of the utility model are: the utility model is simple in structure, mainly by improving the single circulation channel of the existing sprue bushing into two ring-shaped cooling channels around the main channel to enhance the cooling effect. The advantages of strong pressure resistance and long service life; in addition, due to the split structure of the positioning part and the sprue sleeve body, and the positioning part is equipped with a card slot, the difficulty of the manufacturing process is reduced while the sprue sleeve is positioned. , The split structure design reduces the production cost by more than 1/3 compared with the prior art.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a cross-sectional view along line A-A of Fig. 1 .

FIG. 3 is a top view of FIG. 1 .

In the figure: 1- sprue sleeve body, 2- positioning part, 3- main flow channel, 4- annular cooling water channel, 1a- water inlet, 1b- water outlet, 1c- flange, 2a- slot, 2b- positioning pin , 2c-screw, 4a-straight pipe, 4b-screw.

Detailed ways

The utility model is described below in conjunction with accompanying drawing and specific embodiment:

Fig. 1 is a schematic diagram of the overall structure of a sprue sleeve of a split mold of the present invention. A sprue bushing for a split mold, comprising a sprue bushing body 1 and a positioning part 2 fixed on the upper end of the sprue bushing body 1; Two annular cooling water channels 4 are arranged around the main channel 3 in the cavity formed between the main channel 3 , and the sprue bushing body 1 is provided with a water inlet 1 a and a water outlet 1 b communicating with the annular cooling water channels 4 . The water inlet 1a and the water outlet 1b are used to be connected with the water inlet and the water outlet in the mould. In this way, during the injection molding process of the mould, the two annular cooling water channels 4 in the sprue body 1 simultaneously cool the injection molding material passing through the main channel 3, which improves the cooling speed and cooling effect. At the same time, the annular cooling water channels The setting of 4 enhances the pressure resistance of the water channel and prolongs the service life.

Fig. 2 is a cross-sectional view along line A-A of Fig. 1 . The annular cooling water channel 4 is closed by a plurality of straight pipes 4a at one end and fixed to the inner wall of the sprue bushing body 1 with fasteners such as screws 4b, and the other end is inserted into the adjacent straight pipe 4a in the cavity to form an interconnected The annular water channel, and one end of the annular water channel is connected with the water inlet 1a, and the other end is connected with the water outlet 1b.

As shown in Figure 1, in order to better position the utility model in the mould, the upper end of the sprue bushing body is provided with a flange 1c, and the lower end of the positioning part 2 is provided with a card slot matching the flange 1c 2a, so that the positioning part 2 is clamped on the sprue bushing body 1. There is a positioning pin 2b between the positioning part 2 and the sprue bushing body 1, which is used to position the positioning part 2 on the sprue bushing body 1, and then the positioning part 2 and the sprue bushing body 1 are fastened to each other by screws 2c. together (as shown in Figure 3).

The above content is a further detailed description of the utility model in combination with specific preferred technical solutions, and it cannot be determined that the specific implementation of the utility model is only limited to these descriptions. For a person of ordinary skill in the technical field to which the utility model belongs, without departing from the concept of the utility model, some simple deduction or substitutions can also be made, which should be regarded as belonging to the protection scope of the utility model.

Claims (3)

1. a Split type die sprue bush, comprises sprue bush body (1) and is fixed on the location division (2) of sprue bush body (1) upper end; The center of described sprue bush body (1) is provided with sprue (3), it is characterized in that, be provided with two or more annular cooling water road (4) around sprue (3) in the cavity formed between the inwall of sprue bush body (1) and sprue (3), sprue bush body (1) is provided with the water inlet (1a) and delivery port (1b) that are connected with described annular cooling water road (4).

2. a kind of Split type die sprue bush according to claim 1, it is characterized in that, one end to be closed by multiple straight tube (4a) and is fixed on the inwall of sprue bush body (1) and the mode that the other end inserts in adjacent straight tube (4a) forms a water annulus be interconnected by described annular cooling water road (4).

3. a kind of Split type die sprue bush according to claim 1, it is characterized in that, the upper end of described sprue bush body (1) is provided with flange (1c), the lower end of location division (2) is provided with the draw-in groove (2a) matched with described flange (1c), is connected on sprue bush body (1) to make described location division (2); Be fastened together by alignment pin (2b) and screw (2c) between described location division (2) and sprue bush body (1).