CN212826613U

CN212826613U - Novel hot runner structure

Info

Publication number: CN212826613U
Application number: CN202021688523.7U
Authority: CN
Inventors: 刘鸿
Original assignee: Moshuo Industry Dongguan Co ltd
Current assignee: Moshuo Industry Dongguan Co ltd
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2021-03-30
Anticipated expiration: 2030-08-14

Abstract

The utility model discloses a novel hot runner structure, chew body, heater, temperature sensing line, heat mouth core and heat mouth head including heat, the body is chewed to heat and the heater cup joints, body outer wall is chewed to heat has seted up a spacing groove, the temperature sensing line sets up at the spacing inslot, and the temperature sensing line is located between body and the heater is chewed to heat, first runner has been seted up to the body is chewed to heat, the second runner has been seted up to heat mouth head, the one end coaxial of heat mouth core is chewed in the second runner, the other end of heat mouth core cup joints in first runner, the one end that the mouth head is chewed to heat is close to heat mouth core cup joints with the output of first runner, and the body is chewed with the hot mouth core of chewing of heat head cladding. The utility model provides an easy yellow problem of blackening in the coloured plastic material production process, have the effect that can trade the look fast simultaneously.

Description

Novel hot runner structure

Technical Field

The utility model relates to a hot runner structure technical field specifically is a novel hot runner structure.

Background

Hot runners are systems of heating assemblies used in injection molds to inject molten plastic pellets into the mold cavity. The hot runner mold is a new structure in which the runner and the runner of the conventional mold or the three-plate mold are heated, and the runner do not need to be taken out for each molding. The hot runner ensures that the plastic of the runner and the sprue is kept in a molten state by a heating method. Because the heating rod and the heating ring are arranged near or in the center of the runner, the whole runner from the nozzle outlet of the injection molding machine to the sprue is in a high-temperature state, so that plastics in the runner are kept molten, the runner does not need to be opened to take out the solidified materials after the machine is stopped, and the runner is heated to the required temperature when the machine is started again.

In the production process of colored plastic materials, the poor temperature control of the hot runner can cause the poured plastic to turn yellow and black, and the appearance of the product is influenced. In the prior art, the injection molding material needs to be changed in color, and a hot runner with a color changing cap structure needs to be arranged. The color changing cap is made of fragile materials, the color changing cap is easy to damage due to accumulated errors existing in a plurality of parts at the same time, and enough time and cost are needed for replacement after damage. The processing efficiency is reduced, and the processing cost is improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel hot runner structure possesses simple structure, high-efficient homothermal advantage, has solved easy yellowing blackened problem in the colored plastic material production process.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel hot runner structure, chews mouth core and hot mouth head including heat and chews body, heater, temperature sensing line, heat, the body is chewed to the heat cup joints with the heater, the body outer wall is chewed to the heat has seted up a spacing groove, the temperature sensing line sets up at the spacing inslot, and the temperature sensing line is located the heat and chews between body and the heater, the first runner has been seted up to the heat mouth body, the second runner has been seted up to the hot mouth head, the one end of hot mouth core is coaxial to be fixed in the second runner, the other end of hot mouth core cup joints in first runner, the one end that the hot mouth head is chewed near the heat cup joints with the output of first runner, and the hot mouth core is chewed to the body and the hot mouth head cladding hot mouth core is chewed to the.

Preferably, the hot nozzle core is a sharp nozzle-shaped shunt shuttle, the upper end of the hot nozzle core is provided with a glue flow channel communicated with the first flow channel, the lower end of the hot nozzle core shrinks to the axis direction to form a prismatic guide part, the lower end of the hot nozzle core is provided with a plurality of discharge holes communicated with the glue flow channel, and the plurality of discharge holes are uniformly distributed around the guide part.

Preferably, the guide portion is inserted into the second flow channel, and a branch channel is formed between the guide portion and the second flow channel.

Preferably, the hot nozzle core is made of a high-heat-conductivity metal material.

Preferably, the hot nozzle tip is made of heat-insulating alloy materials.

Preferably, the connecting parts of the hot nozzle body and the hot nozzle core are in gapless fit, the connecting parts of the hot nozzle body and the hot nozzle head are in gapless fit, and the connecting parts of the hot nozzle core and the hot nozzle head are in gapless fit.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a set up the temperature sensing line, detect the temperature of heater through the temperature sensing line, adjust the power of heater to temperature in the first runner of control avoids the high temperature to lead to the product of producing to turn yellow blacken.

2. The utility model discloses a setting up hot nozzle core and hot nozzle head, the injection molding material flows in from gluing the runner, shunts a plurality of discharge openings, flows to the subchannel at the flow, and the subchannel volume is less, and the heat preservation and insulation properties is better, and the velocity of flow of injection molding material is also big more to make at the whole in-process plastics that moulds plastics flow at the less subchannel of volume, can not produce long-pending material in the subchannel, the injection molding material of being convenient for trades the look.

3. The utility model discloses a mouth core is chewed to heat adopts the preparation of high heat conduction metal material, the heat mouth head is chewed to heat-proof alloy material preparation, and the heat mouth head is chewed to heat-proof to the outside, chews the mouth core through heat and guarantees inside temperature, reduces the time that the heater high power generates heat, reaches the effect that reduces the efficiency.

Drawings

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the hot nozzle body of the present invention;

FIG. 3 is a cross-sectional view of the hot nozzle core of the present invention;

fig. 4 is a cross-sectional view of the hot nozzle tip of the present invention.

The reference numerals and names in the figures are as follows:

1. a hot nozzle body; 2. a heater; 3. a temperature sensing line; 4. a hot nozzle core; 5. a hot nozzle tip; 6. a limiting groove; 7. a first flow passage; 8. a second flow passage; 9. a glue flow channel; 10. a guide portion; 11. a discharge hole; 12. and a branch channel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides an embodiment: the utility model provides a novel hot runner structure, includes that body 1, heater 2, temperature sensing line 3, hot nozzle core 4 and hot nozzle head 5 are chewed to the heat, body 1 and heater 2 cup joint are chewed to the heat, body 1 outer wall is chewed to the heat has been seted up a spacing groove 6, temperature sensing line 3 sets up in spacing groove 6, and temperature sensing line 3 is located between body 1 and the heater 2 is chewed to the heat, body 1 is chewed to the heat has been seted up first runner 7, second runner 8 has been seted up to hot nozzle head 5, the one end coaxial fixation of hot nozzle core 4 is in second runner 8, the other end of hot nozzle core 4 cup joints in first runner 7, the one end that hot nozzle head 5 was chewed to the heat is close to hot nozzle core 4 cup joints with the output of first runner 7, and body 1 is chewed with hot nozzle head 5 cladding hot nozzle core 4 to the heat. In this embodiment, the lower end of the hot nozzle tip 5 is in a sharp-horn shape and can be connected with a die, so that no dead angle is formed, and heat loss is reduced.

The temperature sensing line 3 can detect the temperature of the heater 2, feed back temperature information in time, and control the temperature in the first flow channel 7 by adjusting the power of the heater 2, so that the plastic processing process is kept at a constant temperature, and yellowing and blackening caused by overheating are prevented.

Specifically, the hot nozzle core 4 is a sharp nozzle-shaped shunt shuttle, the upper end of the hot nozzle core 4 is provided with a glue flow channel 9 communicated with the first flow channel 7, the lower end of the hot nozzle core 4 shrinks to the axis direction to form a prismatic guide part 10, the lower end of the hot nozzle core 4 is provided with a plurality of discharge holes 11 communicated with the glue flow channel 9, and the discharge holes 11 are uniformly distributed around the guide part 10.

Specifically, the guide portion 10 is inserted into the second flow channel 8, and a branch flow channel 12 is formed between the guide portion 10 and the second flow channel 8. The discharge hole 11 is not directly contacted with the injection opening of the cavity. The volume of the branch passage 12 is smaller

The plastic injection molding device has the advantages that the plastic injection molding device is small in size, better in heat insulation performance and larger in flow velocity of injection molding materials, so that the plastic flows in the runner 12 with the smaller size in the whole injection molding process, and material accumulation cannot occur in the runner. When changing the injection molding material, the user need not to clear up long-pending material, can realize the injection molding material of different colours of quick replacement.

Specifically, the hot nozzle core 4 is made of a high-heat-conductivity metal material. The high thermal conductivity metal in the embodiment is beryllium copper alloy with high hardness, and can also be made of other high thermal conductivity metal materials.

Specifically, the hot nozzle tip 5 is made of heat-insulating alloy materials. The heat-insulating alloy material in the embodiment is a non-heat-conducting titanium alloy, and other heat-insulating alloy materials can be selected for manufacturing.

Specifically, the connecting parts of the hot nozzle body 1 and the hot nozzle core 4 are in gapless fit, the connecting parts of the hot nozzle body 1 and the hot nozzle head 5 are in gapless fit, and the connecting parts of the hot nozzle core 4 and the hot nozzle head 5 are in gapless fit. The connection of the hot nozzle body 1, the hot nozzle core 4 and the hot nozzle head 5 is in stepless difference type connection, no dead angle exists in the interior, and the residual injection molding material is prevented from remaining in the cavity.

When moulding plastics, the injection molding material flows in from first runner 7 upper end, and heater 2 heats to temperature control in the wall through the temperature feedback information of temperature sensing line 3, injection molding glue flows in gluey runner 9, shunts to a plurality of discharge openings 11, and the injecting glue material splits the body along subchannel 12 and moulds plastics in the mould.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a novel hot runner structure, includes that body (1), heater (2), temperature sensing line (3), hot nozzle core (4) and hot nozzle head (5), its characterized in that are chewed to the heat: the hot nozzle body (1) is sleeved with the heater (2), a limiting groove (6) is formed in the outer wall of the hot nozzle body (1), the temperature sensing wire (3) is arranged in the limiting groove (6), the temperature sensing wire (3) is located between the hot nozzle body (1) and the heater (2), a first flow channel (7) is formed in the hot nozzle body (1), a second flow channel (8) is formed in the hot nozzle head (5), one end of the hot nozzle core (4) is coaxially fixed in the second flow channel (8), the other end of the hot nozzle core (4) is sleeved in the first flow channel (7), one end, close to the hot nozzle core (4), of the hot nozzle head (5) is sleeved with the output end of the first flow channel (7), and the hot nozzle body (1) and the hot nozzle head (5) are wrapped on the hot nozzle core (4).

2. The new hot runner structure of claim 1, wherein: the hot nozzle core (4) is a sharp nozzle-shaped shunt shuttle, a glue flow channel (9) communicated with the first flow channel (7) is arranged at the upper end of the hot nozzle core (4), the lower end of the hot nozzle core (4) shrinks to form a prismatic guide part (10) towards the axis direction, a plurality of discharge holes (11) communicated with the glue flow channel (9) are arranged at the lower end of the hot nozzle core (4), and the discharge holes (11) are uniformly distributed around the guide part (10).

3. The new hot runner structure of claim 2, wherein: the guide part (10) is inserted into the second flow channel (8), and a branch flow channel (12) is formed between the guide part (10) and the second flow channel (8).

4. The new hot runner structure as claimed in claim 1 or 2, wherein: the hot nozzle core (4) is made of a high-heat-conductivity metal material.

5. The new hot runner structure of claim 1, wherein: the hot nozzle tip (5) is made of heat-insulating alloy materials.

6. The new hot runner structure of claim 1, wherein: the connecting parts of the hot nozzle body (1) and the hot nozzle core (4) are in gapless fit, the connecting parts of the hot nozzle body (1) and the hot nozzle head (5) are in gapless fit, and the connecting parts of the hot nozzle core (4) and the hot nozzle head (5) are in gapless fit.