CN206357598U - A kind of cooling structure of automobile lamp injection mold - Google Patents

Abstract

The utility model discloses a kind of cooling structure of automobile lamp injection mold, its feature is, beryllium-bronze insert is embedded with the die cavity inwall of the injection mold of institute's formed automobile car light, the inside of the beryllium-bronze insert offers the cooling circuit of connection cooling recirculation system.Its good cooling results, can solve a series of cooling blind spot in mould.So that the effectively uniform outward appearance so as to for improvement product of the temperature of mould plays most important effect with injection quality.Improvement wedge angle, the cooling of deep chamber position can be effectively improved.

Description

A kind of cooling structure of automobile lamp injection mold

Technical field

The utility model is related to a kind of injection mold cooling structure, more particularly to a kind of injection mold of automobile lamp is cooled down Structure.

Background technology

In mechanization, automated production highly developed today, injection molding process is developed rapidly, is more asking economical The epoch of returns and efficiency, formed in mould quality requirement more and more higher.In order to develop the potentiality in Shooting Technique, in product product In matter, molding cycle and product cost, the Specialty Design of product, mould and technique is vital factor.Wherein, effectively make The mould type of cooling is used, can greatly shorten the formed product cycle, product cost is reduced, so as to reach the mesh for improving product quality 's.

The shaping of plastic is an integrated technology, and it substantially may include product design, the selection of plastics, material into Type, four key links of Mould design and manufacturing.Wherein, Tool and Die Technology is the important component of advanced manufacturing technology.In note During modeling, plastic mould is a heat exchanger, to keep the balance of mould self heat, and mould should typically set temperature control System.Because the performance of all types of plastic is different with moulding process requirement, the requirement of mold temperature is also not quite similar.Therefore, mould , should be according to the different situations such as plastics variety and die size size during design, it is considered to temperature is carried out to mould in different ways Degree regulation.

Type of cooling species has a lot, and cooling effect is also each has something to recommend him, each own different applicable situation, rational choosing The problems such as with a series of product deformation, excessively size mutation, overflow caused by charging, surface defect etc. can be solved.

And the development of Design of Plastic Mould and manufacturing technology and the development of plastics industry are closely bound up.It is molded in progress Mold design in, except the key skills among some structures, the heating of mould, insulation is with cooling down and clamping structure is compound Material molds design an indispensable part.Structure design directly influences the outward appearance and inherent quality of product, while going back shadow Ring the shaping efficiency of product.The product that the most often occurs it is unqualified including：Size mutation, excessively charging caused by overflow and Surface defect etc..They be mainly injection mold temperature it is unbalanced caused by.At least 60% product problem can be with attribution Design incorrect in mold cooling system.The incorrect processing that cooling medium, injection mould runner and conduit are coupled, often causes Injection cycle is lengthened and serious quality problems.Only realize that the calorifics of two primary condition-moulds balances uniform product When filling capacity is preferable, excellent product quality and most short cycle time could be realized.Therefore, to ensure plastic part quality, Mould temperature must be appropriate, stable, uniformly.It can be seen that, mould temperature all has significant effect to whole molding process.

In the prior art, it is main including following several for the cooling of injection mold：

First, jet flow is cooled down

This is a kind of relatively common universal type of cooling, simple in construction and process easily controllable, with the logical of cooling water Cross and take away mould temperature, reach the purpose of reduction mold temperature.But this structure is limited by product structure, some fine recesses More cannot reach relatively good cooling effect.

2nd, cooled down with elongated special radiating tube

Such a method is applied in the deep raised sharp corner of product, usually due to that can not arrange that jet pipe is cooled down herein So that the bad quality so as to have influence on product of cooling effect goes wrong.And just can solve this problem with such a method.

Radiating tube is that the pipe that there is a kind of inwall " capillary " to act on is constituted, and appropriate low pressure liquid is enclosed wherein. One end of radiating tube is heat absorbing side, as heat rises, and the application fluids in " capillary " are heated, and evaporation, air pressure rises, from And flow from the relatively low part of the air pressure of other end cold side, heat release is condensed into liquid.Liquid is acted on after condensation once again from " blood capillary Backflowed in pipe " to heat absorbing side.The circulation backflowed can be rapidly performed by for this evaporation → condensation →, be the speciality of radiating tube.Hold The species of equipment material mainly has：Copper, stainless steel, aluminium, steel etc..

The advantage of radiating tube：

1st, high cooling effect：200 times of heat transfer performance, and excellent heat reactivity energy can be played compared with copper rod；

2nd, stable cooling effect；

3rd, it is difficult to adhere to, therefore Maintenance free；

4th, ability deterioration is difficult.

3rd, compressed air is cooled down

Change method at the deep raised wedge angle muscle wall of product.Specific method is first used in raised wedge angle muscle wall EDM gets a double-row grooves, and then an insert is welded in the groove of upper strata, by making a call to two passages below insert To cool down.

Sometimes when mould inside is impossible in uneconomical or technique using effective internal cooling system, air cooling is one Plant more satisfactory cooling means.Air is cooled down with water cooling antithesis, and it does not need tight seal for pipe joints, in the absence of resource wave Take, 100 DEG C of mould can be higher than with chilling temperature, the speed of cooling, and letter of originating can be determined by the flow of gas Clean convenience, the workshop for having certain scale can obtain eaily source of the gas.

Utility model content

Technical problem to be solved in the utility model is to overcome the above-mentioned type of cooling present in prior art not There is provided a kind of cooling structure of automobile lamp injection mold for foot.

Its technical problem to be solved can be implemented by the following technical programs.

A kind of cooling structure of automobile lamp injection mold, its feature is, in the injection mold of institute's formed automobile car light Beryllium-bronze insert is embedded with die cavity inwall, the inside of the beryllium-bronze insert offers cooling back for connection cooling recirculation system Road.

As the further improvement of the technical program, beryllium-bronze edge described above at one is embedded with the die cavity inwall Block.

As one of preferred embodiment of the present utility model, wherein beryllium-bronze insert is provided close in the die cavity of cast gate at one On wall.

As another preferred embodiment of the present utility model, another place's beryllium-bronze insert is located at the point of institute's formed automobile car light On the corresponding die cavity inwall in angular position.

As the further improvement of the technical program, the cooling circuit include the horizontal cooling circuit that is mutually communicated and Longitudinal cooling circuit.

Using the cooling structure of the automobile lamp injection mold of above-mentioned technical proposal, by being set on the die cavity inwall of mould The form of beryllium-bronze insert is put, good cooling results can solve a series of cooling blind spot in mould.So that the temperature of mould has The uniform outward appearance so as to for improvement product of effect plays vital effect with injection quality.Be improve wedge angle, deep chamber it is effective Means.

Brief description of the drawings

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

Fig. 2 is the structural representation at another visual angle of part-structure in Fig. 1；

Fig. 3 is the attachment structure signal of beryllium-bronze insert and cooling circuit；

Fig. 4 illustrates for the perspective structure of beryllium-bronze insert, and wherein Fig. 4 a are front view, and Fig. 4 b are top view；

Fig. 5 is the simplified schematic diagram of beryllium-bronze insert site；

Fig. 6 is the simplified schematic diagram of the utility model part-structure；

In figure, 100 --- --- shaping workpiece product 310,320 --- the beryllium-bronze insert 400 --- heat of mould 200 --- --- cooling circuit 600 --- 700 at cast gate --- cooling is high for cooling circuit 321,322,323 for flow passage system 500 It is required that region

Embodiment

Specific embodiment of the utility model is described in further detail below in conjunction with the accompanying drawings.

The cooling structure of automobile lamp injection mold as shown in Figures 1 to 6, is certain double-colored lens of car model back light The cooling structure of injection mold, on the die cavity inwall of injection mold 100 be provided with two at beryllium-bronze insert 310 and 320 (wherein The die cavity of left and right two is used for being molded symmetrical two products in Fig. 1, and beryllium-bronze insert 310 and 320 is exactly that left and right is right The same place claimed), wherein beryllium-bronze insert 320 is arranged on the complicated the brim of a hat of shaping and close to the margin location pair of TOP-TIP On the die cavity inwall answered, i.e., TOP-TIP 400 is corresponding enters to pour place (reference can be made to cast gate position 600 in Fig. 5) corresponding die cavity Inwall, the position belongs to corresponding cooling high request region of Forming Workpiece 200 (see the guide of label in Fig. 6 700).

Cooling circuit is offered inside beryllium-bronze insert 320, as shown in figure 4, cooling circuit includes horizontal cooling circuit 323 are connected with longitudinal cooling circuit 321 and 322, its internal cooling circuit.With the phase of cooling circuit 500 of whole mould Connection.

Cooling structure of the present utility model employs the type of cooling of beryllium-bronze insert, is connected in the inside of beryllium-bronze insert Cooling water hole loop inside cooling water loop, wherein beryllium-bronze insert is used in combination with the material of beryllium-bronze, with traditional edge Block structure is compared, because of its good heat conductivity, it is to avoid the cooling dead angle of product formed thereby so that its cooling is more Uniformly, the cooling structure effectively solves the open defect of product so that in the prior art because cooling down generation not in place Buckling deformation is effectively improved, and substantially increases product appearance quality.

This beryllium-bronze insert being connected with cooling circuit can flexibly be set, such as at the cast gate, Or the complicated profile of shaping, it can effectively improve the product quality after the outward appearance raising injection of shaping.

And because beryllium-bronze is a kind of based alloy containing beryllium copper.Beryllium-bronze has good heat conductivity, corrosion resistance etc. excellent Good characteristic.When exactly its excellent characteristic make it that being used in automobile lamp needs the deeper product sharp corner of rapid heat dissipation, pass through edge Block can just obtain the cooling effect more much better than steel.

Meanwhile, this material proportion of beryllium-bronze is lighter than aluminium by 1/3rd；With steel almost, the ability of transmission heat is steel to intensity Three times, have the good reputation of " glassy metal ", and satisfactory mechanical property, excellent elasticity, ability against corrosion is very high.Using material in itself Feature is combined with cooling water, on the one hand due to its high intensity, the features such as wear-resisting, can shape complex product surface, in addition On the one hand its insert structure is connected with water circulation, direct cools to insert, greatly expands the cooling limitation of cooling water, Cooled region is expanded, so as to reach good cooling effect.

Claims (5)

1. a kind of cooling structure of automobile lamp injection mold, it is characterised in that in the injection mold of institute's formed automobile car light Beryllium-bronze insert is embedded with die cavity inwall, the inside of the beryllium-bronze insert offers cooling back for connection cooling recirculation system Road.

2. the cooling structure of automobile lamp injection mold according to claim 1, it is characterised in that on the die cavity inwall It is embedded with beryllium-bronze insert described above at one.

3. the cooling structure of automobile lamp injection mold according to claim 2, it is characterised in that beryllium-bronze at wherein one Insert is provided close on the die cavity inwall of cast gate.

4. the cooling structure of automobile lamp injection mold according to claim 3, it is characterised in that another place's beryllium-bronze edge Block is on the corresponding die cavity inwall in wedge angle position of institute's formed automobile car light.

5. the cooling structure of the automobile lamp injection mold according to claim 1-4 any claims, it is characterised in that The cooling circuit includes the horizontal cooling circuit being mutually communicated and longitudinal cooling circuit.