CN201253674Y

CN201253674Y - Injection molding tool

Info

Publication number: CN201253674Y
Application number: CNU2008200878035U
Authority: CN
Inventors: 蒋根良
Original assignee: Ningbo Ruiming Machinery Co Ltd
Current assignee: Ningbo Ruiming Machinery Co Ltd
Priority date: 2008-05-27
Filing date: 2008-05-27
Publication date: 2009-06-10
Anticipated expiration: 2018-05-27

Abstract

The utility model discloses a die casting mould which mainly comprises an upper cover plate, an upper die cavity plate, a lower die cavity plate, a lower holding plate, a guide pin, a positioning pin, a top rod, a top rod cover and a top plate, wherein the upper cover plate, the upper die cavity plate, the lower die cavity plate and the lower holding plate are sequentially in layer surface contact from top to bottom; the guide pin and the positioning pin play contraposition and fixing action; and the top rod, the top rod cover and the top plate transfer pressure action. The die casting mould is characterized in that a plurality of mould cavities which are transversely arranged in the upper die cavity plate and the lower die cavity plate; a main pouring channel is arranged in the middle of the double-line mould cavities; a transverse pouring channel is arranged in the middle of the double-row mould cavities; and a temperature testing hole and a cooling liquid flowing passage are arranged in the upper cover plate. Pouring liquid can not or basically can not generate disorder flow in the pouring channel because of the arrangement. Because the die casting mould is additionally provided with the temperature testing device and the cooling device, the chance that products have inclusion, air holes and cranks is reduced, and metal liquid can be evenly distributed, therefore, the passing percent of finished products is improved after forming, and the production cost is reduced.

Description

Die casting

Technical field:

The utility model relates to a kind of mould, specifically is a kind of die casting.

Background technology:

Existing common die casting, mainly comprise the upper cover plate that is followed successively by the aspect contact from top to bottom, the upper impression plate, the lower impressions plate, bottom plate, at upper cover plate, the upper impression plate, the lower impressions plate, be provided with contraposition between the bottom plate, the guide gip of fixation, pilot pin, also comprised the push rod that transmits the pressure effect, the push rod lid, top board, at upper cover plate, the upper impression plate, be provided with the main running channel and the cross gate that flow for casting metals liquid in the lower impressions plate, and existing die casting, its main running channel and cross gate and the alignment placement that is located at the model cavity in the cavity plate there is not unified layout format, just set up on their own according to the product size, width to its running channel, the molten metal of the degree of depth and casting usefulness arrives the not research of distance of model cavity, as long as waste material can separate with the model product, mould does not carry out temperature control yet, thereby the product existence is mingled with, pore, phenomenons such as crack, make the product qualified rate of the product after the moulding relatively low, production cost increases.Such as the present used aluminum alloy connecting rod die casting of applicant unit, its main running channel and product model chamber adopt stringer to arrange, see Fig. 1, main running channel and cross gate intersect vertically for twice, the time order and function that casting liquid in the running channel arrives in the model cavity differs, arriving earlier casting liquid in the model cavity of bottom runs into and cools off immediately behind the model cavity wall and backflow, and only remain after casting liquid in lower model chamber is full of, casting liquid injects toward the model cavity on top again, therefore, the direct current of casting liquid in running channel, crossing current, the mixing of returning stream can produce disorderly stream, also have temperature difference between the disorderly stream, there is product in the time order and function difference in the liquid injection model chamber of in addition casting and is mingled with, pore, the chance in crack increases, quality phenomenon pockety in the product also can occur, this just must reduce the product qualified rate of product after the moulding.

The utility model content:

The technical problems to be solved in the utility model is, provides a kind of main running channel and cross gate reasonable in design, makes casting liquid arrive and fill with model substantially simultaneously, can not produce in the running channel or few die casting that produces disorderly stream;

Technical solution of the present utility model is that a kind of die casting with following structure is provided.This die casting, mainly comprise the upper cover plate that is followed successively by the aspect contact from top to bottom, the upper impression plate, the lower impressions plate, bottom plate, at described upper cover plate, the upper impression plate, the lower impressions plate, be provided with contraposition between the bottom plate, the guide gip of fixation, pilot pin, also be provided with the push rod that extruding lower impressions plate carries out the transmission pressure effect of matched moulds, the push rod lid, top board, at the upper impression plate, also be provided with steam vent between the lower impressions plate, at described upper cover plate, the upper impression plate, be provided with in the lower impressions plate for casting liquid logical moving main running channel and cross gate, also include steam vent, be characterized in: be provided with a plurality of model cavities in the described lower impressions plate of described upper impression plate, described a plurality of model cavity is set to horizontally, described main running channel and described cross gate intersect vertically, and the end of described cross gate is connected with described model cavity.

The utility model also has following feature:

Described a plurality of model cavity is arranged to the determinant layout, and described main running channel is arranged in the middle of the row bit model chamber, and described cross gate setting is expert in the middle of the bit model chamber;

Described a plurality of model cavity is four model cavities, and described four model cavity symmetric arrays are in the both sides of main running channel, described four model cavities also be symmetrical in cross gate about;

In described upper cover plate, be provided with the temperature test hole;

In described upper cover plate and bottom plate, be provided with the coolant flow passage.

After adopting above structure, compared with prior art, the utility model die casting has the following advantages:

Owing to adopt model cavity to be set to transversely arranged, main running channel is arranged in the middle of the biserial model cavity, cross gate is arranged in the middle of the duplicate rows model cavity, main running channel and cross gate have only an alignment placement that intersects vertically a little, a plurality of model cavity symmetric arrays are in the both sides of main running channel, a plurality of model cavities also be symmetrical in cross gate about, model cavity from main running channel and from cross gate apart from basically identical, make the casting liquid in the running channel arrive and fill with the interior time basically identical of model cavity, make casting liquid in running channel, can or can not produce disorderly stream substantially, be provided with thermometric and cooling device in addition, reducing the product existence is mingled with, pore, the chance in crack also provides condition and guarantee for molten metal is evenly distributed in the model cavity.Thereby improved the product qualified rate of product after the moulding, reduced production cost.

Description of drawings:

Fig. 1 is model cavity in the prior art die casting and main running channel, cross gate layout arrangement floor map;

Fig. 2 is the utility model model cavity and main running channel, cross gate layout arrangement floor map;

Fig. 3 is the utility model schematic perspective view;

Fig. 4 is the utility model planar structure schematic diagram.

Shown in the figure: 1, main running channel, 2, cross gate, 3, upper cover plate, 4, upper impression plate, 5, the lower impressions plate, 6, bottom plate, 7, guide gip, 8, central pilot pin, 9, left and right sides pilot pin, 10, push rod, 11, push rod lid, 12, top board, 13, thermometer hole, 14, cooling duct, 15, steam vent, 16 guide gip covers, 17, positioning arm cover, 18, model cavity.

The specific embodiment:

The utility model is described in further detail below in conjunction with the drawings and specific embodiments:

This die casting, mainly comprise the upper cover plate 3, upper impression plate 4, lower impressions plate 5, the bottom plate 6 that are followed successively by the aspect contact from top to bottom, between described upper cover plate 3, upper impression plate 4, lower impressions plate 5, bottom plate 6, be provided with guide gip 7, the

pilot pin

8,9 of contraposition, fixation, also be provided with push rod 10, push rod lid 11, top board 12 that extruding lower impressions plate 5 carries out the transmission pressure effect of matched moulds.One section of guide gip 7 is fixed on bottom plate 6 and the lower impressions plate 5, upper cover plate 3 and upper impression plate 4 are provided with and guide gip 7 another sections guide gip that plays the role of positioning cover 16 of contraposition mutually, pilot pin is provided with central pilot pin 8 and left and right sides pilot pin 9, one end of central pilot pin 8 is connected the lower limb in the middle of the lower impressions plate 5, be provided with in push rod lid 11 and top board 12 centre positions and central pilot pin 8 other ends fairlead of contraposition mutually, one end of left and right sides pilot pin 9 is connected push rod and covers 11 both sides, be provided with in the bottom plate 6 and the both sides of lower impressions plate 5 and left and right sides pilot pin 9 another sections left and right sides positioning arm cover 17 that plays the role of positioning of contraposition mutually, push rod 10 is respectively through bottom plate 6 and lower impressions plate 5, another termination is fixed on the push rod lid 11, be provided with four model cavities 18 between upper impression plate 4 and the lower impressions plate 5, four model cavity 18 sides also are provided with four steam vents 15, it is transversely arranged that four model cavities 18 are set to the duplicate rows biserial, on, lower impressions plate 4, be provided with between 5 for casting liquid logical moving main running channel 1 and cross gate 2, main running channel 1 is arranged in the middle of the biserial model cavity, cross gate 2 is arranged in the middle of the duplicate rows model cavity, the end of cross gate 2 communicates with four model cavities 18 respectively, main running channel 1 and cross gate 2 are for intersecting vertically, four model cavity 18 symmetric arrays are in the both sides of main running channel 1, four model cavities 18 also be symmetrical in cross gate 2 about.

In upper cover plate 3, be provided with temperature test hole 13, in upper cover plate 3 and bottom plate 6, be provided with coolant flow passage 14.The temperature test probe can be installed in temperature test hole 13, test probe links to each other with temperature monitor, when mold temperature is higher, to inject in the coolant flow passage 14 by cold water, the temperature of mould is effectively controlled, for the guarantee product quality proposes to have supplied advantage, and then improve product qualified rate.

Claims

1, a kind of die casting, mainly comprise the upper cover plate (3) that is followed successively by the aspect contact from top to bottom, upper impression plate (4), lower impressions plate (5), bottom plate (6), in described upper cover plate (3), upper impression plate (4), lower impressions plate (5), bottom plate has been provided with contraposition between (6), the guide gip of fixation (7), pilot pin (8,9), also be provided with the push rod (10) that extruding lower impressions plate (5) carries out the transmission pressure effect of matched moulds, push rod lid (11), top board (12), in described upper cover plate (3), upper impression plate (4), be provided with in the lower impressions plate (5) for casting liquid logical moving main running channel (1) and cross gate (2), be characterized in: be provided with a plurality of model cavities (18) between described upper impression plate (4) and the described lower impressions plate (5), described a plurality of model cavity (18) is set to horizontally, described main running channel (1) intersects vertically with described cross gate (2), and the end of described cross gate (2) is connected with described model cavity (18).

2, a kind of die casting according to claim 1, it is characterized in that: described a plurality of model cavities (18) are arranged to the determinant layout, described main running channel (1) is arranged in the middle of the row bit model chamber, and described cross gate (2) setting is expert in the middle of the bit model chamber.

3, a kind of die casting according to claim 1 and 2, it is characterized in that: described a plurality of model cavities are four model cavities (18), described four model cavity symmetric arrays are in the both sides of main running channel (1), described four model cavities also be symmetrical in cross gate (2) about.

4, a kind of die casting according to claim 1 and 2 is characterized in that: be provided with temperature test hole (13) in described upper cover plate (3).

5, a kind of die casting according to claim 1 and 2 is characterized in that: be provided with coolant flow passage (14) in described upper cover plate and bottom plate.