CN202293124U - A mold core of a light guide plate forming mold capable of rapid cooling - Google Patents

Abstract

The utility model relates to a but quick refrigerated light guide plate forming die's mould benevolence, including setting up the movable mould benevolence in the movable mould subassembly and setting up the cover half mould benevolence in the cover half subassembly respectively, wherein: the movable mould core and the fixed mould core are respectively formed by sequentially laminating a first steel layer, a middle beryllium copper layer and a second steel layer; and at least one group of cooling pipelines are respectively arranged in the beryllium copper layer between the movable mould core and the fixed mould core. The utility model discloses compare with current whole steel integral mould benevolence, because the heat conductivility of middle beryllium copper layer is splendid, can the heat on the steel layer of quick absorption and light guide plate sizing material contact to the cooling pipeline in the middle of the utilization of beryllium copper layer lets in the cooling water and leads away the heat fast, thereby reaches the effect that makes the light guide plate sizing material cool off rapidly, shortens the shaping cycle of light guide plate, improves production efficiency, reduce cost. Compare with traditional mould, adopt the utility model discloses mould benevolence structure, the shaping cycle can be shortened to 4 ~ 6 seconds by original 8 ~ 10 seconds.

Description

A mold core of a light guide plate forming mold capable of rapid cooling

Technical field:

The utility model relates to the technical field of light guide plate production molds, in particular to a mold core of a light guide plate forming mold that can be cooled rapidly.

Background technique:

In the injection molding process of the light guide plate, after the injection molding is completed, it takes a period of time to cool the light guide plate compound in the mold cavity, that is, the light guide plate is completely formed; in the mold, the cooling of the core that is in direct contact with the light guide plate compound is The key to the light guide plate molding cycle. The mold cores in the existing molds (including the movable mold core and the fixed mold core) are all designed with an all-steel integral design. The heat dissipation mainly depends on natural cooling, and the heat dissipation is relatively slow. Therefore, it takes a long time and causes light guide plate damage. The molding cycle is longer, the production efficiency is not high, and the cost is higher.

Utility model content:

The purpose of the utility model is to overcome the above-mentioned disadvantages of the prior art, and provide a mold core of a mold for forming a light guide plate that can be cooled rapidly.

The technical solution adopted by the utility model to achieve its purpose is: a mold core of a light guide plate forming mold that can be cooled rapidly, including a movable mold core set in the movable mold assembly and a fixed mold set in the fixed mold assembly Die cores, wherein: the movable mold cores and the fixed mold cores are all sequentially laminated by the first steel layer, the middle beryllium copper layer and the second steel layer; and the movable mold cores and the fixed mold cores At least one set of cooling pipelines are respectively arranged in the middle beryllium copper layer.

Between the first steel layer and the middle beryllium-copper layer, and between the middle beryllium-copper layer and the second steel layer, there are male-female matching structures respectively.

The cooling pipe is curved in the middle layer of beryllium copper.

The middle mold core of the utility model adopts the three-layer structure of the first steel layer, the middle beryllium copper layer and the second steel layer in sequence, and the steel materials used on both sides can meet the wear resistance requirements of the mold core; Compared with the steel integral mold core, due to the excellent thermal conductivity of the middle beryllium copper layer, it can quickly absorb the heat of the steel layer in contact with the light guide plate rubber, and use the cooling pipeline in the middle beryllium copper layer to feed cooling water to The heat is quickly led away, so as to achieve the effect of rapid cooling of the rubber material of the light guide plate, shorten the molding cycle of the light guide plate, improve production efficiency, and reduce costs.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a partial enlarged view of place A in Fig. 1;

Fig. 3 is a schematic plan view of the movable mold assembly in the mold opening state;

Fig. 4 is a schematic plan view of the fixed mold assembly in the mold opening state;

Detailed ways:

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figures 1 to 4, the mold core of the light guide plate forming mold that can be cooled rapidly according to the utility model includes the movable mold core 11 respectively arranged in the movable mold assembly 1 and the mold core 11 arranged in the fixed mold assembly. 2, the fixed mold core 21, the movable mold core 11 and the fixed mold core 21 are all sequentially laminated by the first steel layer 301, the middle beryllium copper layer 302 and the second steel layer 303; and the At least one set of cooling pipelines 304 are provided in the middle beryllium copper layer 302 of the movable mold core 11 and the fixed mold core 21 respectively.

The utility model utilizes the excellent thermal conductivity of beryllium copper, cooperates with the cooling pipeline in the beryllium copper layer, so that the heat dissipation efficiency of the entire mold core is greatly improved, and the steel on both sides can meet the wear resistance requirements of the mold core; The thickness of the second steel layer 303 in contact with the material is relatively thin, which can quickly conduct the heat of the light guide plate rubber material to the middle beryllium copper layer 302, and accelerate the cooling and forming of the rubber material.

In the utility model, between the first steel layer 301 and the middle beryllium-copper layer 302, and between the middle beryllium-copper layer 302 and the second steel layer 303, a male-female matching structure 300 is respectively provided. Groove-type male-female matching structure, which not only can make the direct positioning of the three more accurate, but also facilitates the installation of cooling pipelines, and can also increase the gap between the middle beryllium copper layer 302 and the first steel layer 301 and the second steel layer 303 contact area to improve heat transfer efficiency.

As shown in FIGS. 3 and 4 , the cooling pipeline 304 is curved in the middle beryllium copper layer 302 . The cooling pipeline 304 is designed in a curved shape in the middle beryllium copper layer 302, which can maximize the heat exchange area and heat exchange uniformity, improve the heat exchange efficiency, and further accelerate the cooling of the mold core. The water inlet and outlet of the cooling pipeline pass through the first steel layer 301 and extend out to the outside of the mould, so as to communicate with external pipelines.

In summary, compared with the existing all-steel integral mold core, the utility model can quickly absorb the heat of the steel layer in contact with the rubber material of the light guide plate due to the excellent thermal conductivity of the middle beryllium copper layer, and utilize the middle The cooling pipe in the beryllium copper layer is fed with cooling water to quickly conduct heat away, so as to achieve the effect of rapid cooling of the rubber material of the light guide plate, shorten the molding cycle of the light guide plate, improve production efficiency, and reduce costs. Compared with the traditional mould, the molding cycle can be shortened from the original 8-10 seconds to 4-6 seconds by adopting the mold core structure of the utility model.

Claims (3)

1. A mold core of a rapidly cooling light guide plate forming mold, comprising a movable mold core (11) respectively arranged in the movable mold assembly (1) and a fixed mold arranged in the fixed mold assembly (2) A mold core (21), characterized in that: the movable mold core (11) and the fixed mold core (21) are respectively made of the first steel layer (301), the middle beryllium copper layer (302) and the second steel layer (303) are stacked in sequence; and at least one set of cooling pipelines (304) are respectively provided in the middle beryllium copper layer (302) of the movable mold core (11) and the fixed mold core (21). 2. The mold core of a rapidly cooling light guide plate forming mold according to claim 1, characterized in that: between the first steel layer (301) and the middle beryllium copper layer (302), the middle beryllium copper layer (302) Male-female matching structures (300) are arranged between the copper layer (302) and the second steel layer (303). 3. The mold core of a rapidly cooling light guide plate forming mold according to claim 1, characterized in that: the cooling pipeline (304) is curved in the middle beryllium copper layer (302).

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