CN217968154U

CN217968154U - Injection mold for automobile instrument board

Info

Publication number: CN217968154U
Application number: CN202222042495.7U
Authority: CN
Inventors: 肖烈熙; 胡小东; 张红星; 楚明星
Original assignee: Suzhou Zhenye Mold Co ltd
Current assignee: Suzhou Zhenye Mold Co ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-12-06
Anticipated expiration: 2032-08-04

Abstract

The utility model relates to an injection mold for automobile instrument boards, which comprises an upper mold part and a lower mold part which are arranged in a matching way, wherein a hot nozzle is arranged on a hot runner plate of the upper mold part and is communicated with an injection port arranged on an upper fixing plate through a hot channel inside the hot runner, the outlet of the hot nozzle is communicated with a cavity formed between an upper mold and a lower mold, and the hot nozzle is connected with a sequence controller; the upper die and the lower die are both internally provided with a straight-through cooling water channel and a water well cooling water channel which are used for cooling the die cavity and are communicated with each other, a partition plate is arranged in the water well cooling water channel, and the top of the partition plate is provided with a water passing notch. The utility model discloses instrument board finished product weld mark of moulding plastics is of high quality, the cooling time of moulding plastics is short, the cooling effect is good, production efficiency is high.

Description

Injection mold for automobile instrument board

Technical Field

The utility model relates to an automobile instrument board injection mold belongs to automotive production injection mold technical field.

Background

In the automobile production process, the automobile instrument panel is complex in structure, and is mainly produced by using an injection mold in the prior art, and because the automobile instrument panel is large in area, large in size and complex in shape, when a mold cavity is not filled with the automobile instrument panel during injection molding, the molten plastic injected firstly is easy to solidify, so that the surface of a product is not smooth. In the traditional synchronous multi-point feeding, although the whole cavity can be filled with the melt, a plurality of welding marks exist on the surface A of the finished product of the instrument board, the quality of the finished product is poor, and the subsequent further polishing treatment is needed; meanwhile, the mounting structure of the instrument panel is more, the thickness difference of different positions of the plastic part is large, the cooling rate difference of the upper die and the lower die is large, the cooling time of injection molding is long, the demolding time needs to be estimated according to the cooling condition during demolding, and the injection molding production efficiency is low.

Disclosure of Invention

An object of the utility model is to overcome the aforesaid not enough, provide a finished product weld mark position controllable, the cooling time of moulding plastics is short, the cooling effect is good, the header board injection mold that production efficiency is high.

The purpose of the utility model is realized like this:

an injection mold for automobile instrument panels comprises an upper mold part and a lower mold part which are arranged in a matched mode, wherein the upper mold part comprises an upper fixing plate, a hot runner plate and an upper mold which are arranged in sequence; the upper die and the lower die are both internally provided with a straight-through cooling water channel and a water well cooling water channel which are used for cooling the die cavity and are communicated with each other, a partition plate is arranged in the water well cooling water channel, and the top of the partition plate is provided with a water passing notch.

Furthermore, six hot nozzles with temperature control functions are mounted on the hot runner plate, the hot nozzles are needle valve type nozzles, the opening and closing of the hot nozzles are controlled through an air cylinder arranged on the upper fixing plate, and the air cylinder is controlled by the sequence controller to perform actions.

Furthermore, a heat insulation gasket is arranged between the hot runner plate and the fixing plate, and a heat insulation gasket and a positioning pin are arranged between the hot runner plate and the upper die.

Furthermore, all the straight-through cooling water channels are communicated in parallel, and all the well-type cooling water channels are communicated in series.

Furthermore, the shape of the water passing notch is arc-shaped or V-shaped.

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

the utility model can transfer the welding line of the finished product from the A surface to the grid with lower attention by arranging the position and time of the hot nozzle to feed glue by the sequence controller according to the time sequence at the upper mould part, thereby improving the surface quality of the finished product and avoiding the subsequent polishing processing; the straight-through cooling water channels communicated in parallel and the water well cooling water channels communicated in series are arranged in the upper die and the lower die, so that the cooling rate difference of different positions of the die cavity is small and uniform, the integral cooling time of the injection molding of the instrument panel is reduced, and the injection molding production efficiency is improved.

Drawings

Fig. 1 is the utility model relates to an header board injection mold's schematic structure diagram.

Fig. 2 is the utility model relates to an header board injection mold's baffle structure sketch map.

Wherein:

the device comprises a fixing plate 1, a hot runner plate 2, an upper die 3, a lower die 4, a stripper plate 5, a lower fixing plate 6, a hot nozzle 7, an injection molding opening 8, a straight-through cooling water channel 9, a water well cooling water channel 10, a partition plate 11, a water passing notch 12, a cylinder 13, a heat insulation gasket 14 and a positioning pin 15.

Detailed Description

Referring to fig. 1-2, the utility model relates to an injection mold for automobile instrument panels, which comprises an upper mold part and a lower mold part which are arranged in a matching way, wherein the upper mold part comprises an upper fixed plate 1, a hot runner plate 2 and an upper mold 3 which are arranged in sequence, and the lower mold part comprises a lower mold 4, a stripper plate 5 and a lower fixed plate 6 which are arranged in sequence; a heat insulation gasket 14 is arranged between the hot runner plate 2 and the fixing plate 1, and a heat insulation gasket 14 and a positioning pin 15 are arranged between the hot runner plate 2 and the upper die 3; six hot nozzles 7 with temperature control functions are mounted on the hot runner plate 2, the hot nozzles 7 are needle valve type nozzles, the opening and closing of the hot nozzles 7 are controlled through an air cylinder 13 arranged on the upper fixing plate 1, the air cylinder 13 is controlled by a sequence controller to perform actions according to set time sequences, the hot nozzles are communicated with an injection molding port 8 arranged on the upper fixing plate 1 through a hot channel in the hot runner 2, and an outlet of the hot nozzles 7 is communicated with a cavity formed between the upper mold 3 and the lower mold 4; straight-through cooling water channels 9 and well cooling water channels 10 which are used for cooling the cavity and are communicated with each other are arranged in the upper die 3 and the lower die 4, the straight-through cooling water channels 9 are communicated in parallel, the well cooling water channels 10 are communicated in series, a partition plate 11 is arranged in the well cooling water channels 10, and a circular arc-shaped or V-shaped water passing notch 12 is formed in the top of the partition plate 11 and used for passing cooling water.

When the instrument board is produced by injection molding, the injection molding machine injects molten plastic material into the injection molding opening 8 of the fixed plate 1, and the material flows through the injection molding opening 8, the hot runner in the hot runner plate 2 and the hot nozzle 7 to enter the cavity for molding. When the material flows to a proper position, the cylinder 13 of the needle valve type nozzle is started through the sequence controller, the hot nozzle 7 front end hot runner valve needle is opened, the hot nozzle 7 is made to participate in glue feeding, because the hot runner valve needle can control the time of the front end sprue entering the cavity through the opening time, the product welding line can be adjusted to the grid with lower attention, meanwhile, the welding line length is also shortened, and the welding line quality at the defrosting air port in front of the instrument panel is improved. The six hot nozzles 7 are controlled to be opened or closed by driving the air cylinder 13, so that the effect that the surface A of the plastic part is free from welding marks is achieved.

At the positions of cavities with slower cooling rates, such as the mounting structure position, the thicker part and the like of the instrument panel, a water well type cooling water channel 10 communicated in series and a straight-through type cooling water channel 9 communicated in parallel are respectively arranged in the upper die and the lower die, so that the cooling rates of the complex structure position and the thicker position of the rubber material of the cavity are balanced, the cooling rate is uniform, the injection molding cooling time of the instrument panel is reduced, and the production efficiency is improved.

In addition: it should be noted that the above-mentioned embodiment is only a preferred embodiment of the present patent, and any modification or improvement made by those skilled in the art based on the above-mentioned conception is within the protection scope of the present patent.

Claims

1. The utility model provides an injection mold for automobile instrument boards, contains the last mould portion and the lower mould portion that the cooperation set up, it contains upper fixed plate (1), hot runner plate (2) and last mould (3) that set gradually to go up mould portion, lower mould portion contains lower mould (4) that set gradually, takes off flitch (5) and bottom plate (6), its characterized in that: the hot runner plate (2) is provided with a hot nozzle (7) which is communicated with an injection molding port (8) arranged on the upper fixing plate (1) through a hot channel in the hot runner plate (2), the outlet of the hot nozzle (7) is communicated with a cavity formed between the upper die (3) and the lower die (4), and the hot nozzle (7) is connected with a sequence controller; the mold is characterized in that a through type cooling water channel (9) and a well type cooling water channel (10) which are used for cooling the cavity and are mutually communicated are arranged in the upper mold (3) and the lower mold (4), a partition plate (11) is arranged in the well type cooling water channel (10), and a water passing notch (12) is formed in the top of the partition plate (11).

2. The injection mold for automobile instrument panels as claimed in claim 1, wherein: six hot nozzles (7) with temperature control functions are installed on the hot runner plate (2), the hot nozzles (7) are needle valve type nozzles, the opening and closing of the hot nozzles (7) are controlled through an air cylinder (13) arranged on the upper fixing plate (1), and the air cylinder (13) is controlled by a sequence controller to execute actions.

3. The injection mold for automobile instrument panels as claimed in claim 1, wherein: and a heat insulation gasket (14) is arranged between the hot runner plate (2) and the fixing plate (1).

4. The injection mold for automobile instrument panels as claimed in claim 3, wherein: and a heat insulation gasket (14) and a positioning pin (15) are arranged between the hot runner plate (2) and the upper die (3).

5. The injection mold for automobile instrument panels as claimed in claim 1, wherein: the straight-through cooling water channels (9) are communicated in parallel, and the well cooling water channels (10) are communicated in series.

6. The injection mold for automobile instrument panels as claimed in claim 1, wherein: the shape of the water passing notch (12) is arc-shaped or V-shaped.