CN201264339Y - Mould core with superior cooling effect - Google Patents

Abstract

The utility model provides a mould core with good cooling effect, which comprises a fixed mould inserting element, wherein, a fixed core is arranged inside the fixed mould inserting element, and two side inserting elements that are connected with each other are arranged below the fixed mould inserting element, and a movable mould core is arranged inside the side inserting elements, and the movable mould core is fixed on a movable mould base plate, and a push pipe is arranged outside the movable mould core, and a needle pipe is arranged inside the movable mould core, and the push pipe is fixed on a needle fixed plate, and the needle fixed plate is connected with a needle plate; the utility model is characterized in that the inner upper end of the movable mould core is provided with a small inserting element that is provided with a cooling small hole, and the needle pipe is arranged inside the small inserting element. The mould core has the advantages of good cooling effect and short injection cycling time.

Description

A kind of mold cores of good cooling results

Technical field

The utility model relates to a kind of core of good cooling results, is used for the building core of injection mold, belongs to technical field of mold.

Background technology

In injecting products, some plastic product is than higher, its general mold insert structure is made up of plastic product 1, cover half mold insert 2, cover half core 3, dynamic mould core 4, side mold insert 5, ejector sleeve 6, thimble fixed head 7, ejector retainner plate 8, needle tubing 9, Bottom clamp plate 10 as shown in Figure 1.Because product wants ejector sleeve to eject, ejector sleeve 6 is fixed on the thimble fixed head 7, and dynamic mould core 4 is to be fixed on the Bottom clamp plate 10, and dynamic mould core 4 is very long, generally adopts the needle tube type cooling device.But because the product hole is long smaller, dynamic mould core 4 corresponding moulding sections are also just long thin, and this part cooling pipe can't be worked into.Cooling medium also just can not directly arrive this position, and this part core moulding zone cooling effect is still bad in the injection moulding process, and the injection cycle cycle is long, and this just need do a kind of good core that cools off, and reduces the injection cycle cycle.

Summary of the invention

The purpose of this utility model provides a kind of reinforcement core cooling effect, reduces the core of the good cooling results in injection cycle cycle.

In order to achieve the above object, the technical solution of the utility model has provided a kind of core of good cooling results, comprise the cover half mold insert, be provided with the cover half core in the cover half mold insert, cover half mold insert below is provided with two interconnective side mold inserts, be penetrated with dynamic mould core in the side mold insert, dynamic mould core is fixed on the Bottom clamp plate, dynamic mould core is provided with ejector sleeve outward, in dynamic mould core, be provided with needle tubing, ejector sleeve is fixed on the thimble fixed head, and the thimble fixed head is connected with ejector retainner plate, it is characterized in that, the upper end is provided with the little mold insert that has cooling water hole in dynamic mould core, in the sensible little mold insert of needle tubing.

The utility model is made independently little mold insert to the elongated part of dynamic mould core forming area, can conveniently get out cooling water hole on the little mold insert, it is contained in the dynamic mould core, they communicate with cooling water hole, needle tubing can put in the little mold insert always, cooling medium also just can arrive in the little mold insert, reach the effect of the little mold insert of quick cooling, and the little mold insert splendid beallon material of thermal conductivity, cooling effect is just better like this, because just local little mold insert beallon, the materials of beallon are also little, the cost increase is very little, but effect is obvious.

The utility model has the advantages that the core cooling effect is splendid, injection cycle time is short.

Description of drawings

Fig. 1 is a GENERAL TYPE cored structure schematic diagram;

Fig. 2 is a kind of core structure schematic diagram of good cooling results;

Fig. 3 is that little mold insert 11 and dynamic mould core 4 cooperate schematic diagram.

The specific embodiment

Specify the utility model below in conjunction with embodiment.

As shown in Figure 2, be a kind of core structure schematic diagram of good cooling results, the core rod of described a kind of good cooling results is made up of cover half mold insert 2, cover half core 3, side mold insert 5, dynamic mould core 4, ejector sleeve 6, thimble fixed head 7, ejector retainner plate 8, needle tubing 9, Bottom clamp plate 10 and little mold insert 11.

Cover half core 3 is installed in the cover half mold insert 2, two interconnective side mold inserts 5 are installed in cover half mold insert 2 belows, run through dynamic mould core 4 in the side mold insert 5, dynamic mould core 4 is fixed on the Bottom clamp plate 10, is provided with ejector sleeve 6 outside the dynamic mould core 4, and needle tubing 9 is installed in dynamic mould core 4, ejector sleeve 6 is fixed on the thimble fixed head 7, thimble fixed head 7 is connected with ejector retainner plate 8 successively, and the upper end is provided with the little mold insert 11 that has cooling water hole in dynamic mould core 4, in the needle tubing 9 sensible little mold inserts 11.

As shown in Figure 3, be little mold insert 11 and dynamic mould core 4 cooperation schematic diagrames, this core has two partly: the core main body is dynamic mould core 4, and with common material, its diameter is bigger, can beat a water pipe hole easily.At an end of its moulding, the A section is accurate with the reamer strand, and hole surface fineness will reach Ra0.8.Can bore a smaller cooling water hole on the little mold insert 11, the B section of little mold insert grinds surface smoothness with grinding machine and will reach the Ra0.4. diameter and want big 0.04-0.05MM, the principle that utilization is expanded with heat and contract with cold, dynamic mould core 4 is heated to about 150 degree, 11 of little mold inserts are down to zero, utilize anchor clamps that little mold insert 11 is pressed in the dynamic mould core 4 fast then, so little mold insert 11 is packed tightly by movable model core semi-finals power, plays effect fixing and sealing.

During work, cooling medium enters needle tubing 9 by water channel 12, cooling medium is arrived in the little mold insert 11 by needle tubing 9, take away heat, play the effect of the little mold insert 11 of quick cooling, the water pipe hole by dynamic mould core 4 is back to water channel 13, finish cool cycles, little mold insert 11 can be made with the beallon material, so that more heat-conducting effect to be provided, can reduce the injection cycle cycle of injecting products 1.

Claims (1)

1. the core of a good cooling results, comprise cover half mold insert (2), be provided with cover half core (3) in the cover half mold insert (2), cover half mold insert (2) below is provided with two interconnective side mold inserts (5), be penetrated with dynamic mould core (4) in the side mold insert (5), dynamic mould core (4) is fixed on the Bottom clamp plate (10), the outer ejector sleeve (6) that is provided with of dynamic mould core (4), in dynamic mould core (4), be provided with needle tubing (9), ejector sleeve (6) is fixed on the thimble fixed head (7), thimble fixed head (7) is connected with ejector retainner plate (8), it is characterized in that, the upper end is provided with and has the little mold insert (11) that cooling water hole is done by the beallon material in dynamic mould core (4), in the sensible little mold insert (11) of needle tubing (9).

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