CN201872313U

CN201872313U - Injection molding mold

Info

Publication number: CN201872313U
Application number: CN2010205853421U
Authority: CN
Inventors: 黄燚坤
Original assignee: HUIZHOU XUANGUI MOULD INJECTION CO Ltd
Current assignee: Huizhou shubad Precision Technology Co., Ltd.
Priority date: 2010-10-28
Filing date: 2010-10-28
Publication date: 2011-06-22
Anticipated expiration: 2020-10-28

Abstract

The utility model relates to an injection molding mold, which comprises a front template, a front mold core, a back template and a back mold core, wherein the front mold core is arranged on the front template, the back mold core is arranged on the back template, and a heat conductor is arranged in a part corresponding to a product forming position of the front mold core between the front template and the front mold core. Through the addition of the heat conductor arranged in the part corresponding to the product forming position of the front mold core between the front template and the front mold core, the local temperature of the front mold core can be raised through heating the heat conductor in the injection molding processing process, and sizing materials arranged in a mold cavity of the front mold core can not be easily condensed, so the generation of welding marks of forming products is avoided, an expensive mold temperature controller is not needed to be used, and in addition, products with a high smooth degree and no pray finishing can be made. Through the adoption of the arrangement of the heat conductor in the injection molding mold, the mold damage caused by interference fit among mold accessories can be prevented, in addition, the product burr is also reduced, and the product deformation is prevented, so the product size is more stable, the production period of the products is shortened, and the rejection rate is reduced.

Description

A kind of injection mold

Technical field

The utility model relates to technical field of mold, specifically a kind of injection mold that is used for plastic cement products processing.

Background technology

The plastic cement products of injection moulding processing is widely used, and especially in the electronic digital product scope, as product casings such as digital camera, mobile phone, MP3 and MP4, the outer casing member quality requirements of these electronic digital products is higher.

In the prior art, production has two or more to advance cast gate or when the plastic cement products of island structure is arranged, especially water the thin plastic cement products of bit comparison, some plume material are shunted in mould and are converged when injecting or extruding, and incomplete fusion can not welding be an one to the plastic cement melt each other in that junction, interface meeting Yin Wendu is not enough, cause the fusion trace, promptly form weld mark, shown in A portion in the accompanying drawing 1, weld mark has a strong impact on the presentation quality of plastic cement products.

At present, traditional method of improving weld mark is by die temperature before mold temperature controller water or the oily large tracts of land heating mould, the mold temperature controller causes the mold integral temperature too high, not only can not remove weld mark fully, and preceding die temperature large tracts of land raising back also can produce following defective to mould: cause mould accessory interference fit, mold damage is as guide pillar, insert and to wear part or to bump the cooperation of wearing part; The product burr increase, product easy deformation, product size instability; Life cycle of the product is long, percent defective is high.

The utility model content

The utility model provides a kind of injection mold at the deficiencies in the prior art, has solved product casing and weld mark occurred, causes the problem that product appearance is of poor quality, production efficiency is low.

For achieving the above object, the technical scheme taked of the utility model is:

Design a kind of injection mold, comprise front template, preceding die, rear pattern plate and back die, preceding die is arranged on the front template, and back die is arranged on the rear pattern plate, and the formed product position of corresponding preceding die is equipped with heat carrier between described front template and the preceding die.

The prioritization scheme of such scheme is as follows:

Above-mentioned heat carrier is the inner aluminium box that is provided with heating bar or heating sheet.

Die top before above-mentioned heat carrier bottom is close to.

Excessive in order to prevent the heat diffusion area that heat carrier sends, also thermal insulation board can be installed between above-mentioned heat carrier and the front template.

The utility model has following remarkable result compared to existing technology:

The utility model between front template and preceding die corresponding before the formed product position increase heat carrier of die, in the injection moulding process, heighten the local temperature of preceding die by adding thermal conductor, sizing material before making in the die die cavity is difficult for condensing in the junction, thereby has avoided shaped article to produce weld mark;

2. injection mold of the present utility model not only need not to use expensive mold temperature controller, and can make high luminosity, do not have the product of spraying, and in addition, heat carrier itself also has heat and imitates height, stable performance, low-carbon environment-friendly, and advantage such as safe in utilization;

3. in the utility model, the setting of heat carrier has prevented that the mould that causes because of interference fit between the mould accessory from damaging, as guide pillar, insert and to wear part or to bump the cooperation of wearing part, and, heat carrier has also reduced the product burr, prevent the product distortion, make product size more stable, and shortened life cycle of the product, minimizing percent defective.

Description of drawings

Accompanying drawing 1 is the product schematic diagram after injection mould processing in the prior art;

Accompanying drawing 2 is the product schematic diagrames after the utility model injection mould processing;

Accompanying drawing 3 is the utility model perspective view;

Accompanying drawing 4 is schematic perspective views that the utility model heat carrier is connected with preceding die;

Accompanying drawing 5 is front schematic view that the utility model heat carrier is connected with preceding die;

Accompanying drawing 6 is front schematic view that the utility model thermal insulation board, heat carrier and preceding die are connected.

The specific embodiment

For the ease of those skilled in the art's understanding, the utility model structural principle is further described in detail below in conjunction with specific embodiment and accompanying drawing:

As accompanying drawing 1-6, a kind of injection mold comprises front template 1, preceding die 2, rear pattern plate 3 and back die 4, and preceding die 2 is arranged on the front template 1, and back die 4 is arranged on the rear pattern plate 3.Wherein, between front template 1 and preceding die 2, heat carrier 5 is installed, the position, formed product position of die 2 before the position correspondence of heat carrier 5, preceding die 2 tops are close in heat carrier 5 bottoms; Above-mentioned heat carrier 5 is the aluminium box, be provided with in aluminium box inside several heating bars or the heating sheet, heating bar or the heating sheet by electric wire be electrically connected, heating bar or the heating sheet in the aluminium box, be parallel or vertical arrangement.Die 2 temperatures at localized regions were heightened before heat carrier 5 heatings made, make cast gate weld sizing material temperature keep higher state, when die 2 and the back die 4 before advancing sizing material that cast gate comes out and entering during the moulding injecting products, sizing material is difficult for condensing in the junction, thereby reach desirable welding effect, avoid shaped article to produce weld mark, improve the product appearance quality.

When the mould mould bases size of using hour, excessive in order to prevent the heat diffusion that heat carrier 5 sends to the area of preceding die 2, can not remove weld mark fully, perhaps influencing the mould external member cooperates, between heat carrier 5 and front template 1, thermal insulation board 6 is installed, thermal insulation board 6 is close on the heat carrier 5, the heat absorption some that thermal insulation board 6 sends heat carrier 5, thereby the temperature appropriateness that conducts to preceding die 2 regional areas is heightened, make cast gate weld sizing material temperature keep moderate condition, make sizing material be difficult for condensing in the junction, can the too high quality that influences shaped article of Yin Wendu yet, thereby reach desirable welding effect, avoid shaped article to produce weld mark.

The utility model between front template 1 and preceding die 2 corresponding before the formed product position increase heat carrier 5 of die 2, thereby in the injection moulding process, heighten the local temperature of preceding die 2 by adding thermal conductor 5, sizing material before making in die 2 die cavitys is difficult for condensing in the junction, thereby avoided shaped article to produce weld mark, not only need not to use expensive mold temperature controller, and can do the product of high luminosity, nothing spraying, heat carrier 5 heat are imitated high, stable performance, low-carbon environment-friendly, safety.The setting of heat carrier 5 has also prevented interference fit between the mould accessory, causes mold damage, as guide pillar, insert and to wear part or to bump the cooperation of wearing part; In addition, heat carrier 5 has also reduced the product burr, prevents the product distortion, makes product size more stable, and has shortened life cycle of the product, minimizing percent defective.

In order better to control the temperature of heat carrier 5 and to satisfy the different specification size mould and use, heat carrier 5 can be connected with the temperature control electronic box by temperature probe.

The foregoing description only is a preferred implementation of the present utility model, and in addition, the utility model can also have other implementations.That is to say that under the prerequisite that does not break away from the present utility model design, any conspicuous replacement all should fall within the protection domain of the present utility model.

Claims

1. injection mold, comprise front template (1), preceding die (2), rear pattern plate (3) and back die (4), preceding die is arranged on the front template, back die is arranged on the rear pattern plate, it is characterized in that: the formed product position of corresponding preceding die is equipped with heat carrier (5) between described front template and the preceding die.

2. injection mold according to claim 1 is characterized in that: described heat carrier is the inner aluminium box that is provided with heating bar or heating sheet.

3. injection mold according to claim 2 is characterized in that: described aluminium box internal heat generation rod or heating sheet are parallel or vertical arrangement.

4. injection mold according to claim 1 is characterized in that: die top before described heat carrier bottom is close to.

5. injection mold according to claim 1 is characterized in that: described heat carrier is connected with the temperature control electronic box by temperature probe.

6. injection mold according to claim 1 is characterized in that: thermal insulation board (6) is installed between described heat carrier and the front template.