CN201313362Y

CN201313362Y - Electric-heating die

Info

Publication number: CN201313362Y
Application number: CNU2008202355573U
Authority: CN
Inventors: 王学敏
Original assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Current assignee: Shenzhen Skyworth RGB Electronics Co Ltd
Priority date: 2008-12-24
Filing date: 2008-12-24
Publication date: 2009-09-23
Anticipated expiration: 2018-12-24

Abstract

The utility model relates to an electric-heating die which comprises a front die holder, a front die core and a rear die. An electric heater is arranged inside the front die holder. The electric heater comprises a main heating plate and auxiliary heating plates respectively movably connected with the periphery of the main heating plate. The main heating plate is matched with the main surface of the front die core, and the auxiliary heating plates are matched with the lateral surfaces of the front die core. The electric-heating die adopts a combined heating mode of the main and the auxiliary heating plates, wherein the main and the auxiliary heating plates are connected on a same electric box, and the start time or the stop time of the main and the auxiliary heating plates during the die heating are controlled by the same signal of the electric box. Compared with the prior steam heating, the temperature rise is more rapid during the die cavity heating, and an electric-box control system is simpler than a steam control system but can achieve the same effect. The electric-heating die is applied to all injection-molding dies.

Description

A kind of electrical heating mould

Technical field

The utility model is applicable to LCD, CRT mould structure field, relates in particular to a kind of electrical heating mould.

Background technology

Prior art generally adopts steam, deep fat, hot water to heat to injection mold, to eliminate the surface defects of products of high luminescent material, but these heating means have following shortcoming: mould is when injecting products, investment heating subsystem cost height, as adopt Steam Heating, need investment heating boiler, transit steam pipeline, control steam to enter system etc., cost really high (about 1,000,000); Adopt heating system for oil cost also high (about 160,000); And the hot water heating only is applicable to little mould, is not suitable for big mould.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of low cost, simple in structure, electrical heating mould that the efficiency of heating surface is high.

The utility model is achieved in that a kind of electrical heating mould, comprises a preceding mould bases, a preceding core rod and a back mould, also is provided with an electric heater in the described preceding mould bases.

Described electric heater comprise a main heating plate and respectively with described main heating plate around the secondary heating plate that flexibly connects, described main heating plate with described before the first type surface of core rod cooperate, described secondary heating plate cooperates with the lateral wall of described preceding core rod.

Be connected by hinge spring between described main heating plate and the secondary heating plate.

Described main heating plate and secondary heating plate are connected on same the electronic box.

Be provided with at least 2～4 limited posts in the mould bases before described.

The corresponding locating hole that cooperates with described limited post that offers on the described main heating plate.

Be installed with in the groove of mould bases before described and can make described secondary heating plate paste spring into core rod lateral wall before described, an end of described spring and described secondary heating plate are slidingly connected.

Offer the chute that comes and goes for described spring on the described secondary heating plate.

The core rod lateral wall is provided with the tube head of some groups of turnover cooling waters before described.

The corresponding groove that to avoid described tube head that offers on the described secondary heating plate.

Electrical heating mould provided by the utility model adopts the method for major and minor heating plate combined heated, and major and minor heating plate is connected on same the electronic box, when giving mold heated, and the same signal controlling that it begins, dwell time is subjected to electronic box.Compare with present Steam Heating, temperature rises soon when not only heating to mold cavity than steam, and the electronic box control system is also simple than steam control system, and can reach different song with the bow effect; The utility model is applicable to all injection molds.

Description of drawings

Fig. 1 is the decomposing schematic representation of the electrical heating mould that provides of the utility model embodiment;

Fig. 2 is the decomposing schematic representation that main heating plate that the utility model embodiment provides is installed on the electrical heating mould on the front mould;

The specific embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Consult Fig. 1～shown in Figure 2, a kind of electrical heating mould that the utility model embodiment provides, mould bases 1 before comprising one, a core rod 2 and a back mould 4 before one, also be provided with an electric heater in the mould bases 1 before described, described electric heater comprise a main heating plate 3 and respectively with described main heating plate 3 around four secondary heating plates 31 flexibly connecting, described main heating plate 3 cooperates with the first type surface of described preceding core rod 2, described secondary heating plate 31 cooperates with the lateral wall of described preceding core rod 2, the concrete hinge spring 32 that adopts is connected between main heating plate 3 described in the present embodiment and the secondary heating plate 31, this hinge spring 32 has resistance to compression, high temperature resistant, the advantage of bounce-back property (bending when promptly pressing returns to nature when unclamping); Described main heating plate 3 is connected on same the electronic box (not shown) with secondary heating plate 31, controlled by the same electronic signal of this electronic box for beginning, the dwell time of mold heated.

In addition, be fixedly held to rare 2～4 limited posts 13 in the groove 11 of mould bases 1 before described, specifically set firmly four limited posts 13 in the present embodiment further groove 11, and correspondence offers four locating holes 33 that cooperate with described limited post 13 on the described main heating plate 3, before described limited post 13 can prevent mould bases 1 and preceding core rod 2 when cooperating owing to the main heating plate 3 of the excessive and crowded evil idea of clamp force, described limited post 13 cooperates with locating hole 33 not only can carry out the installation direction location to main heating plate 3, also plays fixedly primary heater; Current core rod 2 enters in the main heating plate 3, it is dark more that preceding core rod 2 enters, it is just tight more that secondary heating plate 31 combines with the sidewall of preceding core rod 2, because limited post 13 is custom-designed locating parts, even so neither can influence heating, also can not squeeze preceding core rod 2 bad because secondary heating plate 31 cooperates tension with preceding core rod 2 because secondary heating plate 31 cooperated pine with preceding core rod 2; This main heating plate 3 can heat core rod 2 before whole simultaneously with the mode of secondary heating plate 31 combined heated, and core rod 2 is heated evenly before making, and can eliminate the phenomenon that the injecting products surface produces clamp effectively; During mould bases 1, hinge spring 32 can be upspring secondary heating plate 31 before current core rod 2 broke away from.

Be installed with in the groove 11 of mould bases 1 before described and guarantee that described secondary heating plate 31 pastes the spring 14 of described preceding core rod 2 lateral walls, one end of described spring 14 and described secondary heating plate 31 are slidingly connected, present embodiment specifically respectively is provided with two springs 14 at the corresponding secondary heating plate 31 in the left and right sides of groove 11, offers the chute (not shown) that comes and goes for described spring 14 on the described secondary heating plate 31; When the mould matched moulds, spring 14 heads on the sidewall that secondary heating plate 31 slowly is attached to preceding core rod 2, and behind the sidewall of core rod 2, spring 14 just arrives secondary heating plate 31 outward flanges and stops before secondary heating plate 31 is adjacent to; After the die sinking, because the effect of the hinge elastic force of spring 14 self, this spring 14 turns back to the hinge place along described chute.

Further, mould bases 1 center offers a main glue-feeder 12 before described, and this main glue-feeder 12 directly is complementary with the nozzle (not shown) of injection machine, and the sizing material in the injection moulding gun barrel is entered in the cavity of preceding core rod 2 by this main glue-feeder 12; Also be installed with four symmetrically arranged guide pillars 15 on the mould bases 1 before described, four preceding core rod guide pillar holes 22 that core rod 2 is offered by correspondence on it before described are slidedly arranged on the described guide pillar 15, mould guide pillar hole 41 after equally also correspondence offers four that cooperate with described guide pillar 15 on the mould 4 of described back.

Core rod 2 lateral walls are provided with the tube head 21 of some groups of turnover cooling waters before described, after the mold heated injection mo(u)lding, need the product in the mould be cooled off, at this moment, cooling water enters the cooling water channel (not shown)s that are opened in the preceding core rod 2 from the tube head 21 that advances cooling water and cools off, behind the product cooling forming, just can product be taken out die sinking; In addition, when matched moulds in order to avoid tube head 21, tube head 21 correspondences offer the groove 34 that can avoid this tube head 21 on two secondary heating plates 31 up and down, can not produce interference when these grooves 34 have guaranteed the mould matched moulds.

The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1, a kind of electrical heating mould comprises a preceding mould bases, a preceding core rod and a back mould, it is characterized in that: also be provided with an electric heater in the mould bases before described.

2, a kind of electrical heating mould as claimed in claim 1, it is characterized in that: described electric heater comprise a main heating plate and respectively with described main heating plate around the secondary heating plate that flexibly connects, described main heating plate cooperates with the first type surface of described preceding core rod, and described secondary heating plate cooperates with the lateral wall of described preceding core rod.

3, a kind of electrical heating mould as claimed in claim 2 is characterized in that: be connected by hinge spring between described main heating plate and the secondary heating plate.

4, a kind of electrical heating mould as claimed in claim 3, it is characterized in that: described main heating plate and secondary heating plate are connected on same the electronic box.

5, a kind of electrical heating mould as claimed in claim 1 is characterized in that: be provided with at least 2～4 limited posts in the mould bases before described.

6, a kind of electrical heating mould as claimed in claim 5 is characterized in that: the corresponding locating hole that cooperates with described limited post that offers on the described main heating plate.

7, a kind of electrical heating mould as claimed in claim 1 is characterized in that: be installed with in the groove of mould bases before described and can make described secondary heating plate paste spring into core rod lateral wall before described, an end of described spring and described secondary heating plate are slidingly connected.

8, a kind of electrical heating mould as claimed in claim 7 is characterized in that: offer the chute that comes and goes for described spring on the described secondary heating plate.

9, a kind of electrical heating mould as claimed in claim 1 is characterized in that: the core rod lateral wall is provided with the tube head of some groups of turnover cooling waters before described.

10, a kind of electrical heating mould as claimed in claim 9 is characterized in that: the corresponding groove that can avoid described tube head that offers on the described secondary heating plate.