CN209036882U - A kind of perseverance low temperature injection mold - Google Patents

Abstract

A kind of permanent low temperature injection mold for PCTG material, including mold rack, the multiple groups runner mould group of mold machine frame inside is set, mold mould group on the downside of runner mould group is set, it further include being laterally distributed in the runner mould group and mold mould group two sides, external condensation system for cooling down outside mould product, and it is disposed longitudinally on mold mould group two sides, internal condensation system for mould product internal cooling, the melten gel of high temperature fused state is flowed out from machine nozzle is projected, melten gel enters after the runner mould group after dual condensation cooling outwardly and inwardly, it flow to mold mould group and realizes injection molding.The utility model passes through the double action of internal condensation system and external condensation system, may be implemented in the range for keeping temperature injection molding suitable in injection moulding process.Temperature real-time detection can be realized by the instrument of setting temperature detection, dynamic adjusting can be realized to injection mould temperature by the temperature and flow velocity that control condensed water.

Description

A kind of perseverance low temperature injection mold

Technical field

The utility model relates to technical field of mold, and in particular to a kind of perseverance low temperature injection mold.

Background technique

Injection mold is a kind of tool for producing plasthetics；Also plasthetics complete structure and accurate dimension are to confer to Tool.Injection molding is a kind of processing method used when producing certain complex-shaped components in batches.It refers specifically to melt heated Plastics by injection molding machine high pressure inject die cavity obtain formed products after cooling and solidifying.

Injection mold divides into two kinds of thermosetting plastic mold, thermoplastic plastic's mold according to shaping characteristic；According to moulding process It distinguishes are as follows: pass mold, blow molding die, draw mould, thermoforming mould, hot-die (compression mould), injection mold etc., wherein hot-die is with flash Mode can be divided into excessive formula, semi-positive, three kinds of formula of not overflowing again, and injection mold can be divided into cold flowing mould channel, hot runner mould with running gate system again Two kinds；It can be divided into according to handling mode mobile, two kinds fixed.

PCTG is a kind of armorphous copolyester, product highly transparent, excellent shock resistance, particularly suitable molding heavy wall Transparent article, machine-shaping property is splendid, and the design of arbitrary shape can be carried out according to the intention of designer, can be using biography The forming methods such as extrusion, injection molding, blow molding and the plastic uptake of system, can be widely applied to sheet, high-performance shrink film, bottle use and it is different The markets such as profile, cosmetic package, while its suitability for secondary processing is excellent, can carry out conventional machining modification.

" freezing mould " is commonly called as the mold of PCTG material, in addition to normal mould structure, needs to give special heed to cooling circuit Design, guarantee that mould temperature is lower than 35 °C, be higher than this mould temperature and be very easy to glutinous mould, this be PCTG be different from other materials at Function is crucial.And in the prior art, permanent low temperature injection molding is difficult to realize for the cooling of mold, therefore product success rate is not high.

Utility model content

The purpose of the utility model is to provide a kind of permanent low temperature injection mold, solve film temperature in the prior art it is unstable, At the not high problem of mould rate.

To solve the above-mentioned problems, the utility model provides a kind of permanent low temperature injection mold, including mold rack, setting exist The multiple groups runner mould group of mold machine frame inside, is arranged in the mold mould group on the downside of runner mould group, is laterally distributed in the runner mould External condensation system with mold mould group two sides, for cooling down outside mould product is organized, and is disposed longitudinally on mold mould group The melten gel of two sides, internal condensation system for mould product internal cooling, high temperature fused state is flowed out from nozzle of injector, Melten gel enter the runner mould group after by outwardly and inwardly dual condensation cooling after, flow to mold mould group realization be molded into Type.

The mold rack is multi-level multi-module structure, plays the role of main support and firm complete machine.Inside it Equipped with a variety of mould groups.The runner mould group and mold mould group are vertically arranged, and the lower end of runner mould group is arranged in mold mould group.This Ejaculator described in utility model is mainly used for melting plastics by high temperature, can directly be commercially available.Passing through will The nozzle connecting passage mould group of ejaculator, so that the colloidal sol under molten condition has the injection of runner mould group to enter in mold mould group, it is real Existing injection molding.

Since PCTG material needs to be molded demoulding in the environment of permanent low temperature, the utility model is in mold rack Portion is provided with condenser system.The purpose of this utility model master is to solve permanent Low Temperature Problems, therefore, is provided with external condensation system System and internal cold awake system realize dual condensation, ensure that the permanent low temperature environment of injection molding.Since runner mould group is equipped with vertical elongated Runner, the cooling that a plurality of lateral condenser pipe realizes runner mould group is arranged in the utility model, so that under high temperature fused state Melten gel gradually cools down in flow process；And mold mould group is mainly used for the compacting of model, is equally also provided at mold mould group A plurality of lateral condenser pipe, so that mold, in pressing process, outside can be realized cooling.

Since mold has certain thickness, the utility model is also provided with internal condensation system, and the inside is cold Mainly vertical condensation pipe is arranged in solidifying system, and since product has cavity structure, the surface area of vertical direction is larger, because The condensation pipe of this internal condensation system is distributed along the inside of product, is realized in mold pressing process inside mould product Cooling.

Therefore, the utility model passes through the double action of internal condensation system and external condensation system, may be implemented infusing In the range for keeping temperature injection molding suitable during modeling.Temperature real-time detection can be realized by the instrument of setting temperature detection, Dynamic adjust can be realized to injection mould temperature by the temperature and flow velocity that control condensed water.

The PCTG material production mold used in the utility model controls cooling circuit temperature by dual-cooled system Glutinous mould is not easy lower than 35 °C, in knockout course, mould product surface smoothness obtained is high, the properties of product consistency of production It is good.

Further, the runner mould group includes the sequentially connected flow channel entry point flowed into for colloidal sol, for injection molding Valve needle of hot runner, colloidal sol flow to mold mould group by valve needle of hot runner, realize injection molding.

Hot flow path is the heating group that is injected into the plastic pellet of thawing in the type chamber of mold used in the injection mold Part system.The runner mould group is the injecting systems of injection mold machine, and main function is a circulation in injection mold machine In work, plastics after a certain number of heating plasticizings can be passed through into spiral shell under certain pressure and speed before the deadline Bar injects molten plastic in mold cavity.The flow channel entry point connects external nozzle of injector.Valve type hot flow path is also one Kind of each major heat flow road supplier in the world be provided which using very universal hot runner system.This system be by using Needle opens or closes cast gate in a manner of mechanical movement at the time of predetermined under the action of needle control device.It is this The hot runner system of type has the advantages that many thermal spike formula and pours shell type flow passage system can not have.It such as can artificially control and pour Mouth switch time, cast gate is smooth, can expand Hot runner Technology applied technical field etc..

Further, the mold mould group includes mould mold insert, rear mold mold insert and rear mold before mould mold insert, second before first Benevolence forms mold cavity between mould mold insert and rear mold mold insert before described second.

The mold mould group is mainly used for the compacting and molding of mold.Mould mold insert phase before mould mold insert and second before described first Mutually cooperation, may be implemented the compacting of mould product face layer.Mould mold insert and rear mold mold insert form casting die before described second Type chamber, using the needle mouth of valve needle of hot runner by injection moulding of melt into type chamber, before first before mould mold insert and second mould mold insert match combined pressure It makes, mould mold insert separates before mould mold insert and second before last first, and mould mold insert and rear mold mold insert separate before second, so that model demoulds It completes.

Therefore the cooperation before the utility model passes through first before mould mold insert, second between mould mold insert, rear mold mold insert is realized fast Speed demoulding, it is easy to operate, production efficiency can be effectively improved.

Further, the mold rack includes the thermal baffle layer, panel layer, hot runner manifold from top to bottom once connected Layer, the first supporting plate layer, the first plate layer further include the second plate layer, the second supporting plate layer and backplane level, the first plate layer and second Slide mechanism is equipped between plate layer.

Since to eject temperature higher for melten gel, by the way that thermal baffle layer is arranged, to can be avoided machine internal temperature excessively high, together When, the thermal baffle layer setting protects the panel layer of machine lower layer, forms thermal insulation layer in top layer, so that condenser system drops Warm is more efficient.The needle assembly of the needle is arranged in panel layer, and the needle upper semisection is arranged in hot runner manifold layer In, lower semisection setting is before first in mould mold insert, convenient for the cooperation of mould mold insert before mould mold insert and second before first.

For the ease of the movement and cooperation between mold rack internal mode group, the mold rack of the utility model is by multi-layer board Layer is constituted, and wherein external condensation system and internal condensation system are distributed in multi-layer board, Multilayer radiating structure is formed, to realize The compacting and demoulding of mold.

The Slide mechanism is equipped with power device, can be directed to the special compression moulding of mould product lower end boss, Such as screw thread mouth structure.

Further, the external condensation system is a plurality of horizontal pipeline, and the horizontal pipeline includes connection condensation water The first water inlet and connect return water pipe the first water outlet, the every horizontal pipeline is in runner mould group or mold mould group After side is branched off into, converge in the other side.

The external condensation system is realized by the way of being converged after branch and is fully cooled.Two pipeline packet shapes after branch Valve needle of hot runner is included at annulus, increases the contact area between condensate pipe and valve needle of hot runner, improves cooling effect Rate realizes the preliminary cooling of hot melt adhesive before shaping.Equally, the utility model is also provided with transverse branch on the outside of mold The condensation pipe of cyclization equally increases the contact area of condensate pipe and mold outer surface, realizes the abundant of the outside of mold Cooling.

Further, the external condensation system includes four lateral ducts, is from top to bottom followed successively by the first transverse tube, second Transverse tube, third transverse tube and the 4th transverse tube, wherein the first transverse tube and the second transverse tube are distributed in runner mould group two sides, wherein third is horizontal Pipe and the 4th transverse tube are distributed in mold mould group two sides.

Further, first transverse tube and the second transverse tube are arranged at runner mould group lower semisection；The third transverse tube with 4th transverse tube is arranged at the upper semisection of mold mould group.Due to lower semisection and then mold mould group, section cooling more With specific aim.

Further, the internal condensation system is a plurality of pipe tunnel, and the pipe tunnel includes connection condensation water The second water inlet and connection return water pipe the second water outlet, the pipe tunnel forms inside product model part and is condensed back to Road.

Further, second water inlet and the second water outlet are set to the same side of mold rack lower end.

For the ease of the management in water route, the ipsilateral of mold rack is arranged in second water inlet and the second water outlet.

The utility model has the beneficial effects that

(1) the utility model passes through the double action of internal condensation system and external condensation system, may be implemented be molded In the range for keeping temperature injection molding suitable in the process.It can realize temperature real-time detection by the instrument of setting temperature detection, lead to The temperature and flow velocity for crossing control condensed water can realize dynamic adjust to injection mould temperature.

(2) the PCTG material production mold used in the utility model controls cooling circuit temperature by dual-cooled system Degree is lower than 35 °C, glutinous mould is not easy in knockout course, mould product surface smoothness obtained is high, the properties of product consistency of production It is good.

(3) for the ease of the movement and cooperation between mold rack internal mode group, the mold rack of the utility model is by more Laminate layer is constituted, and wherein external condensation system and internal condensation system are distributed in multi-layer board, forms Multilayer radiating structure, thus Realize the compacting and demoulding of mold.

(4) the utility model increases cooling area using annular inclusion valve needle of hot runner and mould product, realizes more Adequately cooling.

Detailed description of the invention

Fig. 1 is the utility model mold stereoscopic schematic diagram.

Fig. 2 is the utility model mold longitudinal sectional view.

Fig. 3 is the schematic diagram of internal structure of the utility model mold decapsidate.

Fig. 4 is the utility model mold partial lengthwise sectional view.

Fig. 5 is the another partial lengthwise sectional view of the utility model mold.

Fig. 6 is the schematic diagram that converges after external condensation system lateral duct branch.

Specific embodiment

To keep the purposes, technical schemes and advantages of the utility model implementation clearer, below in conjunction with the utility model Attached drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the utility model.In the accompanying drawings, from beginning Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Described reality Applying example is the utility model a part of the embodiment, instead of all the embodiments.Below with reference to the embodiment of attached drawing description It is exemplary, it is intended to for explaining the utility model, and should not be understood as limiting the present invention.It is practical new based on this Embodiment in type, every other implementation obtained by those of ordinary skill in the art without making creative efforts Example, fall within the protection scope of the utility model.The embodiments of the present invention are described in detail with reference to the accompanying drawing.

Embodiment

A kind of perseverance low temperature injection mold, it is shown as shown in Figure 1 and 2, including mold rack 1, it is arranged inside mold rack 1 Multiple groups runner mould group 2, the mold mould group 3 of the downside of runner mould group 2 is set, as shown in figure 3, further include be laterally distributed in it is described 3 two sides of runner mould group 2 and mold mould group, external condensation system 4 for cooling down outside mould product, and be disposed longitudinally on 3 two sides of mold mould group, internal condensation system 5 for mould product internal cooling, the melten gel of high temperature fused state is from injection Machine nozzle outflow, melten gel enter the runner mould group 2 after by outwardly and inwardly dual condensation cooling after, flow to mold mould group 3 realize injection molding.

Further, as shown in figure 4, the runner mould group 2 includes the sequentially connected flow channel entry point flowed into for colloidal sol 21, for the valve needle of hot runner of injection molding 22, colloidal sol flow to mold mould group 3 by valve needle of hot runner 22, realizes injection molding.

Further, as shown in figure 5, the mold mould group 3 include mould mold insert 32 before mould mold insert 31, second before first, after Mould mold insert 33 and rear cavity 34 form mold cavity 35 before described second between mould mold insert 32 and rear mold mold insert 33.

Further, as shown in figure 5, the mold rack 1 includes thermal baffle layer 11, the panel from top to bottom once connected Layer 12, hot runner manifold layer 13, the first supporting plate layer 14, the first plate layer 15, further include the second plate layer 16, the second supporting plate layer 17 and bottom Plate layer 18 is equipped with Slide mechanism 19 between the first plate layer 15 and the second plate layer 16.

Further, as shown in figure 4, the external condensation system 4 is a plurality of horizontal pipeline, the horizontal pipeline includes connecting It connects the first water inlet 41 of condensation water and connects the first water outlet 42 of return water pipe, as shown in connection with fig. 6, the every cross To pipeline after runner mould group 2 or 3 side of mold mould group are branched off into, converge in the other side.

Further, in conjunction with shown in Fig. 4 ~ Fig. 5, the external condensation system 4 include four lateral ducts, from top to bottom according to Secondary is the first transverse tube 10, the second transverse tube 20, third transverse tube 30 and the 4th transverse tube 40, wherein the first transverse tube 10 and the second transverse tube 20 2 two sides of runner mould group are distributed in, wherein third transverse tube 30 and the 4th transverse tube 40 are distributed in 3 two sides of mold mould group.

Further, in conjunction with shown in Fig. 4 ~ Fig. 5, first transverse tube 10 and the second transverse tube 20 are arranged under runner mould group 2 At half section；The third transverse tube 30 and the 4th transverse tube 40 are arranged at the upper semisection of mold mould group 3.

Further, as shown in connection with fig. 4, the internal condensation system 5 is a plurality of pipe tunnel, and the pipe tunnel includes The second water inlet 51 of condensation water and the second water outlet 52 of connection return water pipe are connected, the pipe tunnel is in product model Condensing circuit is formed inside part.

Further, as shown in connection with fig. 4, second water inlet 51 and the second water outlet 52 are set to 1 lower end of mold rack The same side.

Embodiment of above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although referring to above preferably real Mode is applied the utility model is described in detail, those skilled in the art should understand that, it can be practical new to this The technical solution of type is modified or equivalent replacement should not all be detached from the spirit and scope of the technical scheme of the present invention.This field Technical staff can also do the design that other variations etc. are used in the utility model within the spirit of the present invention, without departing from this The technical effect of utility model.These changes made in accordance with the spirit of the present invention should all be included in the utility model Within the scope of claimed.

Claims (9)

1. a kind of perseverance low temperature injection mold, including mold rack, are arranged in the multiple groups runner mould group of mold machine frame inside, setting exists Mold mould group on the downside of runner mould group, which is characterized in that further include being laterally distributed in the runner mould group and mold mould group two sides , external condensation system for cooling down outside mould product, and be disposed longitudinally on mold mould group two sides, produce for mold The internal condensation system of product internal cooling, the melten gel of high temperature fused state enter the runner from machine nozzle outflow, melten gel is projected After mould group after dual condensation cooling outwardly and inwardly, it flow to mold mould group and realizes injection molding.

2. perseverance low temperature injection mold according to claim 1, which is characterized in that the runner mould group includes sequentially connected For colloidal sol flow into flow channel entry point, for the valve needle of hot runner of injection molding, colloidal sol flow to mold mould group by valve needle of hot runner, reality Now it is molded.

3. perseverance low temperature injection mold according to claim 2, which is characterized in that the mold mould group includes mould edge before first Mould mold insert, rear mold mold insert and rear cavity before part, second form mould type between mould mold insert and rear mold mold insert before described second Chamber.

4. perseverance low temperature injection mold according to claim 1, which is characterized in that the mold rack includes from top to bottom one Thermal baffle layer, panel layer, hot runner manifold layer, the first supporting plate layer, the first plate layer of secondary connection, further include the second plate layer, the second support Plate layer and backplane level are equipped with Slide mechanism between the first plate layer and the second plate layer.

5. perseverance low temperature injection mold according to claim 1, which is characterized in that the external condensation system is a plurality of transverse direction Pipeline, the horizontal pipeline includes the first water outlet for connecting the first water inlet and connection return water pipe of condensation water, described Every horizontal pipeline converges after runner mould group or mold mould group side are branched off into the other side.

6. perseverance low temperature injection mold according to claim 5, which is characterized in that the external condensation system includes four cross To pipeline, it is from top to bottom followed successively by the first transverse tube, the second transverse tube, third transverse tube and the 4th transverse tube, wherein the first transverse tube and Two transverse tubes are distributed in runner mould group two sides, and wherein third transverse tube and the 4th transverse tube are distributed in mold mould group two sides.

7. perseverance low temperature injection mold according to claim 6, which is characterized in that first transverse tube and the second transverse tube are arranged At runner mould group lower semisection；The third transverse tube and the 4th transverse tube are arranged at the upper semisection of mold mould group.

8. perseverance low temperature injection mold according to claim 3, which is characterized in that the internal condensation system is a plurality of longitudinal direction Pipeline, the pipe tunnel includes the second water outlet for connecting the second water inlet and connection return water pipe of condensation water, described Pipe tunnel forms condensing circuit inside product model part.

9. perseverance low temperature injection mold according to claim 8, which is characterized in that second water inlet and the second water outlet Set on the same side of mold rack lower end.