CN203209629U

CN203209629U - Multi-bit cap-free vertical type pouring stripping pattern forming module of valve guide pipe

Info

Publication number: CN203209629U
Application number: CN 201320223353
Authority: CN
Inventors: 罗忠平; 陈涛
Original assignee: FULING INTERNAL COMBUSTION ENGINE ACCESSORIES Co Ltd
Current assignee: FULING INTERNAL COMBUSTION ENGINE ACCESSORIES Co Ltd
Priority date: 2013-04-28
Filing date: 2013-04-28
Publication date: 2013-09-25
Anticipated expiration: 2023-04-28

Abstract

The utility model discloses a multi-bit cap-free vertical type pouring stripping pattern forming module of a valve guide pipe. The module is composed of guide pipe modules (1), a guide pipe module fixed plate (2) and a stripping pattern gate plate (3), wherein the shape and the size of the upper part of each guide pipe module are same with those of valve guide pipes; the lower parts of the guide pipe modules are of stepped shapes, and the end parts of the guide pipe modules are provided with threads; the lower parts of the multiple guide pipe modules pass through the guide pipe module fixed plate (2) and the stripping pattern gate plate (3), and the guide pipe modules, the guide pipe module fixed plate (2) and the stripping pattern gate plate (3) are fixed together. According to the multi-bit cap-free vertical type pouring stripping pattern forming module of the valve guide pipe provided by the utility model, an valve guide pipe horizontal type foundry technology is changed into a vertical type pouring technology, a die joint is not needed, and a trimming problem is avoided; a casting does not have a shrinkage cavity and slag inclusion, and casting quality is guaranteed; multi-bit guide pipe modules are arranged in each box in side by side, meanwhile, multiple guide pipe module castings are manufactured simultaneously, and the production efficiency is improved. The multi-bit cap-free vertical type pouring stripping pattern forming module provided by the utility model is suitable for pouring minitype long castings, and particularly foundry practice of the valve guide pipe.

Description

The non-cap vertical pouring stripping pattern of a kind of valve guide bushing multidigit mould

Technical field

The utility model relates to the non-cap vertical pouring stripping pattern of a kind of valve guide bushing multidigit mould, belongs to the small-sized accessory Casting Technology of automobile field.

Background technology

Valve guide bushing is the guider of automotive engine valves, valve is play the guiding role, and make the heat on the valve stem pass to cylinder through valve guide bushing.Valve guide bushing is a kind of small cylindrical auto-parts, usually adopt the casting alloy processing and fabricating to form, its traditional casting technique is one case a plurality of horizontal sand casting, this casting technique certainly will form die joint at all diametric middle parts of the flat valve guide bushing foundry goods that crouches, the shortcoming of this casting technique is that the casting fin that the die joint place produces is too many, causes deflashing, burr to influence production efficiency, and the necessary allowance that increases blank, cause casting cost to increase; Because die joint at the diametric middle part of foundry goods, causes the foundry goods on die joint top easily to produce shrinkage cavity and slag inclusion, influences the inherent quality of foundry goods, and mould shift, has reduced the foundry goods first-time qualification rate, also causes casting cost to increase.Foundry goods need be gone up the nowel somatotype, two casees matched moulds, and production efficiency is low.Increase riser feeding, the molten iron utilization rate is not high, the cost height.

Summary of the invention

The purpose of this utility model is the problem that exists according on the above traditional valve guide bushing casting technique, discloses the non-cap vertical pouring stripping pattern of a kind of valve guide bushing multidigit mould.

The technical solution of the utility model is that the non-cap vertical pouring stripping pattern of the utility model valve guide bushing multidigit mould is made up of conduit mould, conduit mould fixed head, stripping pattern gate plate and demoulding sandbox; The shape on conduit mould top, size be the same zero draft with valve guide bushing all, and the bottom is stairstepping, and there is screw thread the end; The stripping pattern gate plate is passed in the bottom of conduit mould, with nut the conduit mould is fixed on stripping pattern gate plate on the conduit mould fixed head, during moulding, only needs to put demoulding sandbox at the stripping pattern gate plate, can be toward feeding type sand molding in the demoulding sandbox.

The every case of mould can hold a plurality of conduit moulds, and the even vertical arrangement of a plurality of conduit moulds is fixed on the conduit mould fixed head.

The beneficial effects of the utility model are after the non-cap vertical pouring stripping pattern of the utility model valve guide bushing multidigit mould makes Qi door Dao Guan Lying formula casting technique into vertical pouring, owing to there is not die joint, then not have the overlap problem; Owing to be vertical pouring, top is to bottom feeding riser-free; And it is top to float to top in the slag that flows into and the quicksand meeting automatically, adds and can excise man-hour; Therefore foundry goods does not have shrinkage cavity and slag inclusion, has guaranteed the quality of foundry goods; Gas in the casting process runs outward, can not stay in the conduit; Owing to adopt vertical pouring, can be arranged side by side multidigit conduit mould in every case, produce a plurality of conduit foundry goods of cast simultaneously, improved the production efficiency of conduit casting greatly; Because no rising head, the stripping pattern drawing does not need draft, has improved the molten iron utilization rate greatly, effectively reduces cost.

The utility model is applicable to the Foundry Production of the cast of small-sized long foundry goods, particularly valve guide bushing.

Description of drawings

Fig. 1 is the non-cap vertical pouring stripping pattern of the utility model valve guide bushing multidigit forming die structure schematic diagram;

Fig. 2 is the non-cap vertical pouring stripping pattern of the utility model valve guide bushing multidigit mould cavity structure schematic diagram;

Picture in picture number: the 1st, the conduit mould; The 2nd, conduit mould fixed head; The 3rd, the stripping pattern gate plate; The 11st, cast gate; The 12nd, main running channel; The 13rd, the stripping pattern hole; The 14th, minute running channel.

The specific embodiment

The specific embodiment of the present utility model as shown in Figure 1.

The non-cap vertical pouring stripping pattern of present embodiment valve guide bushing multidigit mould is made up of conduit mould 1, conduit mould fixed head 2 and stripping pattern gate plate 3.Shape, the size on conduit mould top are all the same with valve guide bushing, and the bottom is stairstepping, and there is screw thread the end; 26 conduit moulds divide 4 row evenly distributed, conduit mould fixed head and stripping pattern gate plate are passed in its underpart, with the screw thread of nut sleeve upper conduit mould end and tighten, conduit mould and conduit mould fixed head, stripping pattern gate plate are fixed together, formed 26 non-cap vertical pouring moulds of valve guide bushing.

26 non-cap vertical pouring moulds of valve guide bushing are put into the casting sandbox, put into molding sand, can be made into 26 non-cap vertical pouring cavity structures of valve guide bushing as shown in Figure 2, wherein, the 11st, cast gate; The 12nd, main running channel; The 13rd, the stripping pattern hole; The 14th, minute running channel.During cast, molten iron enters from cast gate, to minute running channel 14, enters the conduit mould through main running channel 12, arrives stripping pattern hole 13 again.

Present embodiment once can be produced 26 valve guide bushing sprays, improved production efficiency greatly, and non-trimming, no shrinkage cavity and slag inclusion, the big raising of casting quality, and significantly reduced the auxiliary labor of deburring and rising head, reduce the scrappage of foundry goods, reduced the production cost of foundry goods, had good economic benefits.

Claims

1. the non-cap vertical pouring stripping pattern of a valve guide bushing multidigit mould comprises demoulding sandbox, it is characterized in that, described casting mold also comprises conduit mould (1), conduit mould fixed head (2) and stripping pattern gate plate (3); Shape, the size on conduit mould (1) top are all the same with valve guide bushing, and the bottom is stairstepping, and there is screw thread the end; Conduit mould fixed head (2) and stripping pattern gate plate (3) are passed in the bottom of conduit mould (1), and conduit mould (1) and conduit mould fixed head (2), stripping pattern gate plate (3) are fixed together.

2. the non-cap vertical pouring stripping pattern of a kind of valve guide bushing multidigit according to claim 1 mould is characterized in that, the every case of described conduit mould (1) can hold a plurality of, and the even vertical arrangement of a plurality of conduit moulds is fixed on the conduit mould fixed head (2).