CN205009512U

CN205009512U - Hot mouth of hot runner

Info

Publication number: CN205009512U
Application number: CN201520743102.2U
Authority: CN
Inventors: 彭日标
Original assignee: Zhuhai Gree Daikin Precision Mold Co Ltd
Current assignee: Zhuhai Gree Daikin Precision Mold Co Ltd
Priority date: 2015-09-23
Filing date: 2015-09-23
Publication date: 2016-02-03
Anticipated expiration: 2025-09-23

Abstract

The utility model discloses a hot mouth of hot runner, including hot mouth core and hot muzzle, hot mouth in -core is equipped with the runner that supplies the plastic to pass through, the front end of hot mouth core is provided with the first jiao kou who feeds through with the runner, the outer wall of hot mouth core has and encircles first jiao kou's first sealed face, the complete cladding of hot muzzle the front end of hot mouth core, the inner wall of hot muzzle with gapped formation air heat insulation layer between the outer wall of hot mouth core, hot muzzle with the position that first jiao kou is relative is provided with second jiaokou, just the inner wall of hot muzzle has and encircles second jiao kou and with the sealed face of second of first sealed face seal. The utility model provides a hot mouth of hot runner, the first sealed face of hot mouth core and the second of hot muzzle seal the face seal, have stopped the production at plastic dead angle to can realize trading the look not less than the machine, and it is totally strong not less than the machine, do not influence the product appearance face, practiced thrift material cost and human cost.

Description

Hot runner hot mouth

Technical field

The utility model relates to technical field of mold, particularly relates to a kind of hot runner hot mouth.

Background technology

As shown in Figure 1, hot mouth comprises hot mouth core 1 and hot muzzle 2 to the hot mouth structure used in existing mold, is provided with runner 1a in hot mouth core 1, and mouth core retainer plate 2 is set in hot mouth core 1 front end, does not contact between mouth core retainer plate 2 with hot mouth core 1, takes plastic cement thermal insulation layer heat insulation.There is dead angle in this hot mouth, needs hot mouth to take off the plastic cement removed in dead angle when colour changing, there is lathe and shut down wait phenomenon, have a strong impact on production production capacity; And plastics not easy-clear are clean, often occur the black line phenomenon of hot flow path in process of production, have a strong impact on product percent of pass.

Summary of the invention

For above-mentioned prior art present situation, technical problem to be solved in the utility model is, provides a kind of hot runner hot mouth, solves the problem of black line phenomenon that existing hot mouth causes because there is dead angle and colour changing difficulty.

In order to solve the problems of the technologies described above, a kind of hot runner hot mouth provided by the utility model, comprises hot mouth core and hot muzzle, and described hot mouth in-core is provided with the runner passed through for plastic cement, and the front end of described hot mouth core is provided with the first Jiao Kou with flow passage; The outer wall of described hot mouth core has the primary sealing area around described first Jiao Kou; The front end of the complete coated described hot mouth core of described hot muzzle, gap is had to form air heat-insulation layer between the inwall of described hot muzzle and the outer wall of described hot mouth core, the position that described hot muzzle is relative with described first Jiao Kou is provided with the second Jiao Kou, and the inwall of described hot muzzle has around described second Jiao Kou and the secondary sealing area sealed with described primary sealing area.

Wherein in an embodiment, described primary sealing area is positioned on the front end face of described hot mouth core.

Wherein in an embodiment, the front end of described hot mouth core is taper.

Wherein in an embodiment, the outer wall of described hot muzzle has the transmission of heat by contact face contacted with mould inner wall.

Wherein in an embodiment, the area in the contact area between described primary sealing area and described secondary sealing area and described transmission of heat by contact face is arranged so that the temperature T1 of described first Jiao Kou and described second glue mouth inwall meets the following conditions: T2 < T1, wherein, T2 is the fusing point of plastic cement.

Wherein in an embodiment, described transmission of heat by contact face is ring-type.

The hot runner hot mouth that the utility model provides, the primary sealing area of hot mouth core and the secondary sealing area of hot muzzle seal, and have stopped the generation at plastic cement dead angle, thus machine colour changing can not realized any more, and do not descend machine to rinse, do not affect Surface Appearance, save material cost and human cost.

The beneficial effect that the utility model additional technical feature has will be described in this description detailed description of the invention part.

Accompanying drawing explanation

Fig. 1 is the sectional structure schematic diagram of hot runner hot mouth of the prior art;

Fig. 2 is the explosive view of the hot runner hot mouth in the utility model embodiment;

Fig. 3 is the installation diagram of the hot runner hot mouth in the utility model embodiment;

Fig. 4 is the A-A sectional view of Fig. 3;

Fig. 5 is the close-up schematic view at I place in Fig. 4;

Fig. 6 is the using state figure of the hot runner hot mouth in the utility model embodiment.

The hot mouth core of description of reference numerals: 1-, 1a-runner, 1b-first Jiao Kou, 1c-primary sealing area, the hot muzzle of 2-, 2a-second Jiao Kou, 2b-secondary sealing area, 2c-transmission of heat by contact face, 2d-product contact surface, 3-air heat-insulation layer, 4-plastic cement, 5-plastic cement products, 6-mould.

Detailed description of the invention

And the utility model is described in detail below with reference to the accompanying drawings in conjunction with the embodiments.It should be noted that, when not conflicting, the feature in following embodiment and embodiment can combine mutually.

Fig. 2 is the explosive view of the hot runner hot mouth in the utility model embodiment, and Fig. 3 is the installation diagram of this hot runner hot mouth, and Fig. 4 is the A-A sectional view of Fig. 3.As in Figure 2-4, hot runner hot mouth in the utility model embodiment forms primarily of hot mouth core 1 and hot muzzle 2, wherein, hot mouth core 1 is provided with the runner 1a passed through for plastic cement extended vertically, the front end face of described hot mouth core 1 is provided with the first glue mouth 1b be communicated with runner 1a, the outer wall of described hot mouth core 1 has the primary sealing area 1c around described first glue mouth 1b.The front end of the complete coated described hot mouth core 1 of described hot muzzle 2, gap is had to be formed for heat insulation air heat-insulation layer 3 between the inwall of described hot muzzle 2 and the outer wall of described hot mouth core 1, the position that described hot muzzle 2 is relative with described first glue mouth 1b is provided with the second glue mouth 2a, and the inwall of described hot muzzle 2 comprises the secondary sealing area 2b around described second glue mouth 2a.As shown in Figure 5, described primary sealing area 1c and described secondary sealing area 2b contacts with each other to be formed and seals, and has stopped the generation at plastic cement dead angle, thus machine colour changing can not realized any more, and do not descend machine to rinse, do not affect Surface Appearance, save material cost and human cost.

More preferably, the front end of described hot mouth core 1 is taper, and described primary sealing area 1c is positioned on the front end face of described hot mouth core 1, can reduce hot mouth core 1 and hot muzzle 2 contact area like this, prevents the temperature of hot muzzle 2 too high.

Because hot muzzle 2 has small size to contact with hot mouth core 1, the high temperature of hot mouth core 1 can be passed to hot muzzle 2, and hot muzzle 2 directly contacts with product, if hot muzzle 2 temperature is too high, contact that region can scald product cause defect with product, therefore need to dispel the heat to hot muzzle 2.Due to the temperature of mould lower (about 60 degrees Celsius), therefore the present embodiment utilizes mould 9 to dispel the heat to hot muzzle 2, the outer wall of described hot muzzle 2 has the transmission of heat by contact face 2c with mould 9 contact internal walls, during use, the contact internal walls (see Fig. 6) of transmission of heat by contact face 2c and mould 9, the heat on hot muzzle 2 is passed to mould 9 by transmission of heat by contact face 2c.More preferably, described transmission of heat by contact face 2c is ring-type, and like this, transmission of heat by contact face 2c can also play position and function.

But, if primary sealing area 1c and secondary sealing area 2b contact area little, and transmission of heat by contact face 2c area is too large, then dispel the heat too fast, can affect the plastic cement flowing inside hot mouth core 1; But if primary sealing area 1c and secondary sealing area 2b contact area are large, and transmission of heat by contact face 2c area is too little, then radiating effect is not good, and hot muzzle 2 temperature is too high, contacts that region with product and can scald product and cause defect.Therefore, the area of the contact area between described primary sealing area 1c and described secondary sealing area 2b and described transmission of heat by contact face 2c is arranged so that the temperature T1 of described first glue mouth 1b and described second glue mouth 2a inwall meets the following conditions: T2 < T1, wherein, T2 is the fusing point of plastic cement.The area of the contact area between described primary sealing area 1c and described secondary sealing area 2b and described transmission of heat by contact face 2c can be calculated by heat simulation to be determined.

Fig. 6 is the using state figure of the hot runner hot mouth in the utility model embodiment.See Fig. 6, plastic cement 4 flows through the runner 1a of hot mouth core 1, and the transmission of heat by contact face 2c of hot muzzle 2 contacts with mould 6, and hot muzzle 2 has the product contact surface 2d contacted with plastic cement products 5.

To sum up, the hot runner hot mouth of the utility model embodiment, has small size to contact by hot muzzle 2 with hot mouth core 1 and avoids dead angle to produce, thus machine colour changing can not realized any more, and do not descend machine to rinse, do not affect Surface Appearance, save material cost and human cost.Meanwhile, in order to prevent hot muzzle 2 temperature too high, cause contacting with product that region and can scald product and cause defect, hot muzzle 2 is provided with the transmission of heat by contact face 2c with mould 9 contact internal walls, is dispelled the heat to hot muzzle 2 by mould.

The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims

1. a hot runner hot mouth, comprise hot mouth core (1) and hot muzzle (2), be provided with the runner (1a) passed through for plastic cement in described hot mouth core (1), the front end of described hot mouth core (1) is provided with the first Jiao Kou (1b) be communicated with runner (1a); It is characterized in that, the outer wall of described hot mouth core (1) has the primary sealing area (1c) around described first Jiao Kou (1b); The front end of the complete coated described hot mouth core (1) of described hot muzzle (2), gap is had to form air heat-insulation layer (3) between the inwall of described hot muzzle (2) and the outer wall of described hot mouth core (1), described hot muzzle (2) position relative with described first Jiao Kou (1b) is provided with the second Jiao Kou (2a), and the inwall of described hot muzzle (2) has around described second Jiao Kou (2a) and the secondary sealing area (2b) sealed with described primary sealing area (1c).

2. hot runner hot mouth according to claim 1, is characterized in that, described primary sealing area (1c) is positioned on the front end face of described hot mouth core (1).

3. hot runner hot mouth according to claim 2, is characterized in that, the front end of described hot mouth core (1) is taper.

4. according to the hot runner hot mouth in claim 1-3 described in any one, it is characterized in that, the outer wall of described hot muzzle (2) has the transmission of heat by contact face (2c) with mould (9) contact internal walls.

5. hot runner hot mouth according to claim 4, it is characterized in that, the area in the contact area between described primary sealing area (1c) and described secondary sealing area (2b) and described transmission of heat by contact face (2c) is arranged so that the temperature T1 of described first Jiao Kou (1b) and described second Jiao Kou (2a) inwall meets the following conditions: T2 < T1, wherein, T2 is the fusing point of plastic cement.

6. hot runner hot mouth according to claim 4, is characterized in that, described transmission of heat by contact face (2c) is ring-type.