CN209812902U - A mold that can guarantee the appearance quality of optically transparent products - Google Patents

Abstract

The utility model discloses a can guarantee mould of optics transparent product outward appearance quality, its characterized in that: the die comprises an ejection insert (1), the ejection insert (1) is connected with a core (2), the mould also comprises an ejection fixing plate (3), an ejector rod (4) is connected on the ejection fixing plate (3), the ejector rod (4) is connected with the mould core (2), the mold core (2) is also connected with a limit bolt (5), the nut part of the limit bolt (5) is movably connected in a limit groove (7) arranged in the movable template (6), the mold core (2) is also connected with a guide sleeve (8), the guide sleeve (8) is sleeved on a guide post (9) fixed in the movable mold plate (6), the movable mould plate (6) is provided with a movable mould core frame (10), the ejection insert (1) is matched with a groove in the center of the movable mould core frame (10), and the ejection direction of the ejector rod (4) is the horizontal direction.

Description

A mold that can guarantee the appearance quality of optically transparent products

technical field

The utility model relates to the field of molds, in particular to a mold that can guarantee the appearance quality of optically transparent products.

Background technique

Due to the strict requirements on the surface of optical lens products, they are generally high-transmittance surfaces, and have extremely high requirements for appearance. Once a small scratch line appears on the product, the product will stop production, and no traces of ejector pins are allowed on the product surface , so direct use of the traditional ejection mechanism cannot meet the product requirements;

Therefore, for optical lens products, the ejection of the whole ejector block is now mostly used to realize the ejection of the product, but in the production process of optically transparent products, the gas impurities and mold metal movement generated during the melting and pouring of PC (CLEAR) resin materials Friction occurs between the surfaces. Due to the thermal expansion of the metal, metal strain will appear on the friction surface, and the mold surface is easily damaged. This not only causes production waste, but also shortens the service life of the mold and increases the maintenance cost of the mold.

Therefore need a kind of method or device that can solve above-mentioned problem now.

Contents of the invention

The utility model aims to solve the above-mentioned shortcomings in the prior art, and proposes a mold with simple structure, ingenious design, and effective guarantee of product quality.

The technical solution of the utility model is: a mold that can guarantee the appearance quality of optically transparent products. Said mold also includes ejector fixing plate 3, said ejector fixing plate 3 is connected with ejector rod 4, said ejector rod 4 is connected with core 2, and limit bolt 5 is also connected on core 2, said limiter The nut part of the positioning bolt 5 is movably connected in the limit groove 7 opened in the movable template 6, and the core 2 is also connected with a guide sleeve 8, and the guide sleeve 8 is sleeved and fixed in the movable template 6 On the guide post 9, the moving template 6 is provided with a moving mold core frame 10, the ejection insert 1 is matched with the groove at the center of the moving mold core frame 10, and the ejector rod 4 The ejection direction is the horizontal direction,

The ejection insert 1 is in the shape of a square platform as a whole, that is, the upper, lower, left, and right sides of the ejection insert 1 are inclined surfaces,

The longitudinal section of the ejecting insert 1 is in the shape of an isosceles trapezoid.

Compared with the prior art, the utility model has the following advantages:

Compared with the traditional mold, the mold with this structure can guarantee the appearance quality of optically transparent products. The biggest improvement is that the vertical surface on the side of the ejection insert is changed to an inclined surface, so that the entire ejection insert is square. In this way, during the ejection process, after the ejection insert is displaced, all its sides will be out of contact with the core frame of the moving model in an instant to prevent friction during the movement, thus completely avoiding the metal damage of the product. Strain problem. At the same time, the ejection insert is also equipped with a guide mechanism composed of guide sleeves and guide posts, which reduces the fit gap of the moving model core, improves the stability of the movement, and thus ensures the appearance quality of the optically transparent product.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of the utility model.

Fig. 2 is a schematic diagram of the three-dimensional structure of the ejected insert part in the embodiment of the utility model.

Detailed ways

The specific embodiment of the utility model will be described below in conjunction with the accompanying drawings. As shown in Figure 1 and Figure 2: a mold that can ensure the appearance quality of optically transparent products, it includes an ejection insert 1, the ejection insert 1 is connected to the core 2, and the mold also includes an ejection fixing plate 3, the ejector fixing plate 3 is connected with a ejector rod 4, the ejector rod 4 is connected with the core 2, and the limit bolt 5 is also connected with the core 2, and the nut part of the limit bolt 5 It is movably connected in the limit groove 7 opened in the movable template 6, and the core 2 is also connected with a guide sleeve 8, and the guide sleeve 8 is sleeved on the guide post 9 fixed in the movable template 6, so The moving template 6 is provided with a moving mold core frame 10, the ejection insert 1 is matched with the groove at the center of the moving mold core frame 10, and the ejection direction of the ejector rod 4 is horizontal ,

The ejection insert 1 is in the shape of a square platform as a whole, that is, the upper, lower, left, and right sides of the ejection insert 1 are inclined surfaces,

The longitudinal section of the ejecting insert 1 is in the shape of an isosceles trapezoid.

The working process of the mold that can guarantee the appearance quality of optically transparent products in the embodiment of the utility model is as follows: the mold opening direction and the ejection direction of the mold are both horizontal.

After the mold is closed, the molding machine pours the material into the cavity, and after the material fills the cavity, it is cooled and formed, and the mold is opened. After the mold is opened, the product needs to be ejected from the cavity.

When ejecting, the ejector fixing plate 3 moves under the action of the molding machine, and the ejector rod 4 drives the core 2 and the ejection insert 1 to eject outward. Since the moving model core frame 10 is fixed, the insert is ejected at this time 1. Move relative to the core frame 10 of the dynamic model, and push out the product;

After the product is formed, part of it is in contact with the ejection insert 1, and the other part is in contact with the core frame 10 of the dynamic model. Since the ejection insert 1 has a special shape, which is a square truss, it only needs to match the shape of the ejection insert 1. The relative movement of the groove of the ejection insert 1 will immediately break away from the contact between the movable mold core frame 10, and will not contact or rub against each other during the subsequent movement, thereby preventing the product from being ejected from the insert. There is a strain at the junction of the block 1 and the core frame 10 of the moving model;

However, the traditional cube-shaped ejection inserts with rectangular transverse and longitudinal sections always have dynamic friction between the ejection inserts and the core frame of the moving model during the movement process, which can easily lead to strain on the surface of the product.

At the same time, during the above-mentioned movement process, the horizontally distributed guide sleeve 8 and the guide post 9 move relatively to prevent the displacement of the ejection insert 1 in the longitudinal direction, and also prevent the surface of the product from being strained due to the movement of the ejection insert. The problem.

Claims (1)

1. The utility model provides a can guarantee mould of optically transparent goods outward appearance quality which characterized in that: the die comprises an ejection insert (1), the ejection insert (1) is connected with a core (2), the die further comprises an ejection fixing plate (3), an ejector rod (4) is connected onto the ejection fixing plate (3), the ejector rod (4) is connected with the core (2), a limiting bolt (5) is further connected onto the core (2), a nut part of the limiting bolt (5) is movably connected into a limiting groove (7) formed in a movable template (6), a guide sleeve (8) is further connected onto the core (2), the guide sleeve (8) is sleeved on a guide post (9) fixed in the movable template (6), a movable model core frame (10) is arranged on the movable template (6), grooves in the centers of the ejection insert (1) and the movable model core frame (10) are matched with each other, and the ejection direction of the ejector rod (4) is horizontal,

the whole ejection insert (1) is in a quadrangular frustum pyramid shape, namely, the upper, lower, left and right side surfaces of the ejection insert (1) are inclined surfaces,

the longitudinal section of the ejection insert (1) is in an isosceles trapezoid shape.