CN212498717U

CN212498717U - Automobile interior trim part mold

Info

Publication number: CN212498717U
Application number: CN202020375702.9U
Authority: CN
Inventors: 平增华; 徐杰
Original assignee: Yangzhou Huazhan Auto Parts Co ltd
Current assignee: Yangzhou Huazhan Auto Parts Co ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2021-02-09
Anticipated expiration: 2030-03-23

Abstract

The utility model discloses an automotive interior part mould, which relates to the field of automotive interior part manufacturing, and comprises an upper mould, a lower mould and an injection opening, wherein the lower end of the upper mould is provided with an upper mould cavity, the upper end of the lower mould is provided with a lower mould cavity, the upper mould is connected with the lower mould, the upper mould cavity and the lower mould cavity form an injection main cavity, the lower end center of the lower mould is provided with an injection channel, the upper end of the injection channel faces towards the injection main cavity, the lower end of the injection channel is connected with a melt injector, the melt injector is connected with a gas injector, a lower mould cooling pipe is laid inside the lower mould, an auxiliary cavity is arranged outside the center of the upper mould, the center of the auxiliary cavity is hollowed, the center of the lower end of the auxiliary cavity is provided with an opening, the center of the upper mould is provided with an auxiliary cavity channel, the lower end of the auxiliary cavity faces towards the injection, go up the inside mould cooling tube of having laid of mould, the utility model provides a mould the easy warp's of piece problem.

Description

Automobile interior trim part mold

Technical Field

The utility model relates to an automotive interior makes the field, concretely relates to is an automotive interior spare mould.

Background

The automobile interior mainly comprises functional parts such as front and rear protectors, rearview mirrors, spoilers, instrument boards, side walls, door panels and the like; however, most of the internal and external ornaments are produced by non-metal materials, the non-metal materials comprise plastics, rubber, fabrics and the like, wherein the plastic consumption is the largest, the plastics have the advantages of small density, easy modeling, corrosion resistance, good heat preservation, easy molding and the like, but the plastics also have the defects of large shrinkage rate, easy deformation and the like; to produce an acceptable plastic article, not only is the characteristics of the various materials known, but the methods of forming the various materials are also familiar. Traditional injection moulding is that the filling process of control fuse-element entry speed and control entry pressure carry out feed supplement pressurize process to plastics cooling shrinkage, and the finished piece of shaping like this has big internal stress, easily appears warpage and deformation after the drawing die, and cools off the inequality and be unfavorable for production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automotive interior spare mould, the problem of warping easily appears after solving the complicated working of plastics drawing die of traditional mould manufacturing.

The invention provides the following technical scheme:

the automotive interior part mold comprises an upper mold, a lower mold and an injection molding opening, wherein the lower end of the upper mold is provided with an upper mold cavity, the upper end of the lower die is provided with a lower die cavity, the upper die is connected with the lower die, the upper die cavity and the lower die cavity form an injection molding main cavity, the center of the lower end of the lower die is provided with an injection molding channel, the upper end of the injection molding channel faces towards the injection molding main cavity, the lower end of the injection molding channel is connected with a melt injector, the melt injector is connected with a gas injector, a lower die cooling pipe is laid in the lower die, an auxiliary cavity is arranged outside the center of the upper die, the center of the auxiliary cavity is hollowed to form an auxiliary cavity, the center of the lower end of the auxiliary cavity is provided with an opening, the center of the upper die is provided with an auxiliary cavity channel, the lower end of the auxiliary cavity channel faces the injection molding main cavity, the upper end of the auxiliary cavity channel is connected with an opening in the auxiliary cavity, and an upper mold cooling pipe is laid in the upper mold.

Furthermore, the upper die cooling pipe is arranged inside the upper die, the upper die cooling pipe is of a serpentine structure, a water inlet of the upper die cooling pipe is located between the auxiliary cavity and the upper die cavity, a water outlet of the upper die cooling pipe is located between the auxiliary cavity and the upper die cavity, the upper die cooling pipe comprises a first upper cooling pipe and a second upper cooling pipe, the first upper cooling pipe is located on one side of the auxiliary cavity channel, and the second upper cooling pipe is located on the other side of the auxiliary cavity channel.

Further, the lower die cooling pipe is arranged inside the lower die, the lower die cooling pipe is of a serpentine structure, a water inlet of the lower die cooling pipe is located between the melt injector and the lower die cavity, a water outlet of the lower die cooling pipe is located between the melt injector and the lower die cavity, the lower die cooling pipe comprises a first lower cooling pipe and a second lower cooling pipe, the first lower cooling pipe is located on one side of the injection molding channel, and the second lower cooling pipe is located on the other side of the injection molding channel.

Furthermore, there is a downward bulge in the center of the lower end of the auxiliary cavity, a melt channel is arranged in the center of the bulge, the melt channel penetrates through the upper end and the lower end of the bulge, the upper end of the melt channel is connected with the auxiliary cavity, and the lower end of the melt channel is connected with the auxiliary cavity channel.

Further, melt passageway one side is fluted, and the cross section of recess is the same with melt passageway's cross section, recess one end links to each other with melt passageway, the recess other end outwards extends to pass the arch and forms the jack, the flashboard is equipped with in the recess, the flashboard includes handle and baffle, handle one end is connected with the baffle, the jack is run through to the handle other end, and the cross section of baffle is the same with melt passageway's cross section.

Further, the gas auxiliary injector comprises a nitrogen container, a gas pipe and a piston, one end of the piston is arranged in the nitrogen container, the other end of the piston is arranged outside the nitrogen container, one end of the gas pipe is connected with the nitrogen container, and the other end of the gas pipe penetrates through the melt injector and is connected with the injection molding channel.

The invention has the beneficial effects that:

the utility model discloses simple structure, gaseous supplementary injection moulding can reduce the tonnage requirement to the fuse-element injection by a wide margin, because the die cavity internal pressure reduces, can also reduce the mould damage, and reduce and require to the mould wall thickness ground, thereby reduce the mould cost, and because injection pressure is little, the inside ground gas of plastics fuse-element is located isobaric respectively, consequently die cavity internal pressure distributes evenly than traditional injection moulding, the residual stress is less with producing among the pressurize cooling process, make goods warp tendency reduce after the demolding, and because all there is condenser tube in last mould and the bed die, can in time and even cool down the mould, reduce the shaping time, improve the finished product quality.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a vertical sectional view of the present invention;

FIG. 2 is a horizontal sectional view of the upper mold of the present invention;

FIG. 3 is a horizontal sectional view of the lower mold of the present invention;

FIG. 4 is a top view of the melt channel blocked by the baffle of the present invention;

FIG. 5 is a top view of the baffle of the present invention as it exits the melt channel;

fig. 6 is an enlarged view of a portion a of fig. 1 according to the present invention.

Reference numerals: 1. an upper die; 2. injecting a main cavity; 3. a lower die; 4. a secondary chamber; 5. A secondary cavity; 6. a shutter plate; 7. injection molding a channel; 8. a secondary lumen channel; 9. a melt injector; 10. a gas delivery pipe; 11. a nitrogen gas receiver; 12. a piston; 13. a first upper cooling pipe; 14. a second upper cooling pipe; 15. a first lower cooling tube; 16. and a second lower cooling pipe.

Detailed Description

As shown in fig. 1 to 5, an injection molding main cavity 2 is formed after an upper die 1 is connected with a lower die 3, an auxiliary cavity channel 8 is arranged at the center of the upper die 1, an auxiliary cavity 5 is arranged at the upper end of the center of the upper die 1, the center of the auxiliary cavity 5 is hollowed to form an auxiliary cavity 4, the lower end of the auxiliary cavity 5 is downwardly protruded, a melt channel for melt to pass through is formed by hollowing the center of the protrusion, the melt channel is connected with the auxiliary cavity channel 8, a groove is formed at one side of the melt channel, the cross section of the groove is the same as that of the melt channel, the groove extends outwards and narrows, the groove extends to the outer side of the protrusion, a jack is formed between the groove and the protrusion, a flashboard 6 is arranged in the groove, the flashboard 6 is divided into a handle and a baffle plate, the handle extends to the outer side of the protrusion through the jack, the cross section of, or pulling the handle to retract the flashboard 6 into the groove, wherein a first upper cold pipe 13 and a second upper cold pipe 14 are arranged in the upper die 1, the first upper cold pipe 13 and the second upper cold pipe 14 are respectively positioned at two sides of the auxiliary cavity channel 8, the first upper cold pipe 13 and the second upper cold pipe 14 both penetrate through the upper die 1, and the first upper cold pipe 13 and the second upper cold pipe 14 both have a serpentine structure in the upper die 1.

An injection molding channel 7 is arranged in the center of the lower mold 3, a first lower cold pipe 15 and a second lower cold pipe 16 are arranged in the lower mold 3, the first lower cold pipe 15 and the second lower cold pipe 16 are respectively positioned on two sides of the injection molding channel 7, the first lower cold pipe 15 and the second lower cold pipe 16 both penetrate through the lower mold 3, the first lower cold pipe 15 and the second lower cold pipe 16 are both in a snake-shaped structure in the lower mold 3, the injection molding channel 7 is connected with the melt injector 9, the melt injector 9 is connected with a gas injector, the gas injector comprises a gas pipe 10, a nitrogen container 11 and a piston 12, the gas pipe 10 is connected with the melt injector 9, the gas pipe 10 extends into the melt injector 9 and is connected with the injection molding channel 7, one end of the piston 12 extends into the nitrogen container 11, the other end of the piston 12 is outside the nitrogen container 11, and nitrogen is input into the gas pipe 10 by controlling the piston 12.

The working mode of the invention is as follows: the melt injector 9 injects the melt into the main injection molding cavity 2 through the injection molding channel 7, the injection is stopped after the main injection molding cavity 2 is filled, then the flashboard 6 is opened and the nitrogen gas is injected through the gas injector, so that the nitrogen gas enters the main injection molding cavity, part of the melt flows into the auxiliary cavity 4, the flashboard 6 is closed after the nitrogen gas is injected to a certain degree, the nitrogen gas is continuously injected to increase the pressure of the main injection molding cavity 2, then the upper mold 1 and the lower mold 3 start to cool through injecting the cold water into the first upper cooling pipe 13, the second upper cooling pipe 14, the first lower cooling pipe 15 and the second lower cooling pipe 16, the injection of the cold water is stopped after the cooling is continued for a period of time, and the mold is opened to take.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Automotive interior spare mould including last mould and bed die, the mouth of moulding plastics, its characterized in that: the lower extreme of going up the mould has the die cavity, the upper end of bed die has the bed cavity, it is connected with the bed die to go up the mould cavity, it forms the main chamber of moulding plastics with the bed cavity down to go up the mould cavity, the lower extreme center of bed die has the passageway of moulding plastics, the main chamber of moulding plastics of passageway upper end orientation, the passageway lower extreme of moulding plastics is connected with the fuse-element injector, be connected with gas injector on the fuse-element injector, the inside bed die cooling tube of having laid of bed die down, it is equipped with vice cavity to go up the mould center outside, vice cavity center fretwork forms vice cavity, vice cavity lower extreme center has the opening, it has vice cavity passageway to go up the mould center, vice cavity passageway lower extreme orientation main chamber of moulding plastics, vice cavity passageway upper end is connected with the opening on the vice cavity, it has the mould cooling tube to go up.

2. The automotive interior mold according to claim 1, wherein: the upper die cooling pipe is arranged inside the upper die and is of a serpentine structure, a water inlet of the upper die cooling pipe is located between the auxiliary cavity and the upper die cavity, a water outlet of the upper die cooling pipe is located between the auxiliary cavity and the upper die cavity, the upper die cooling pipe comprises a first upper cooling pipe and a second upper cooling pipe, the first upper cooling pipe is located on one side of the auxiliary cavity channel, and the second upper cooling pipe is located on the other side of the auxiliary cavity channel.

3. The automotive interior mold according to claim 1, wherein: the lower die cooling pipe is arranged inside the lower die, the lower die cooling pipe is of a serpentine structure, a water inlet of the lower die cooling pipe is located between the melt injector and the lower die cavity, a water outlet of the lower die cooling pipe is located between the melt injector and the lower die cavity, the lower die cooling pipe comprises a first lower cooling pipe and a second lower cooling pipe, the first lower cooling pipe is located on one side of the injection molding channel, and the second lower cooling pipe is located on the other side of the injection molding channel.

4. The automotive interior mold according to claim 1, wherein: the center of the lower end of the auxiliary cavity is provided with a downward bulge, the center of the bulge is provided with a melt channel, the melt channel penetrates through the upper end and the lower end of the bulge, the upper end of the melt channel is connected with the auxiliary cavity, and the lower end of the melt channel is connected with the auxiliary cavity channel.

5. The automotive interior mold according to claim 4, wherein: melt passageway one side is fluted, and the cross section of recess is the same with melt passageway's cross section, recess one end links to each other with melt passageway, the outside extension of recess other end is passed protrudingly and is formed the jack, the flashboard is equipped with in the recess, the flashboard includes handle and baffle, handle one end is connected with the baffle, the jack is run through to the handle other end, and the cross section of baffle is the same with melt passageway's cross section.

6. The automotive interior mold according to claim 1, wherein: the gas-assisted injector comprises a nitrogen container, a gas pipe and a piston, wherein one end of the piston is arranged in the nitrogen container, the other end of the piston is arranged outside the nitrogen container, one end of the gas pipe is connected with the nitrogen container, and the other end of the gas pipe penetrates through the melt injector to be connected with an injection molding channel.