CN221790969U - Double-channel exhaust manifold pouring system for solving pipe wall holes - Google Patents

Abstract

The utility model belongs to the technical field of exhaust manifold pouring, and particularly relates to a double-channel exhaust manifold pouring system for solving the problem of pipe wall holes. The novel pouring basin comprises a pouring basin body, a straight pouring gate, a horizontal pouring gate and an inner pouring gate, wherein a liquid outlet below the pouring basin body is connected to the straight pouring gate, an outlet of the straight pouring gate is connected to the horizontal pouring gate, four inner pouring gates are formed in the horizontal pouring gate and are arranged in a central symmetry mode, two inner pouring gates on the same side of the horizontal pouring gate are respectively connected with the inner pouring gate, the two inner pouring gates comprise a first inner pouring gate and a second inner pouring gate, the first inner pouring gate and the second inner pouring gate are respectively connected to a first branch pipe and a second branch pipe of an exhaust manifold die, the first branch pipe is located outside the second branch pipe, and the pipe length ratio between the first inner pouring gate and the second pouring gate is 1:1.28. The utility model can solve the problem of air holes on the pipe wall of the product, improve the yield and reduce the manufacturing cost.

Description

Double-channel exhaust manifold pouring system for solving pipe wall holes

Technical Field

The utility model belongs to the technical field of exhaust manifold pouring, and particularly relates to a double-channel exhaust manifold pouring system for solving the problem of pipe wall holes.

Background

The exhaust manifold casting system refers to a casting molding process for manufacturing an exhaust manifold. The exhaust manifold is one of the key components of an engine and is responsible for directing exhaust gases into the exhaust system to avoid polluting the environment and affecting human health. The traditional exhaust manifold manufacturing process has the problems of unsmooth exhaust emission, high noise, high vibration, uneven heat distribution and the like, and the problems can be effectively solved by the application of an exhaust manifold pouring system. The exhaust manifold pouring system adopts precise pouring and solidification technology, liquid metal or plastic and other materials are poured into a mould, and then the exhaust manifold with excellent performance is manufactured by precisely controlling the flow and solidification process of the materials. However, part of the exhaust manifold has serious pipe wall holes in the trial production process, and the maximum period of the defects of the product pouring holes reaches 10 percent. Therefore, whether an exhaust manifold pouring system capable of improving the hole problem in the product pouring process and improving the yield is provided is a technical problem to be solved urgently.

Disclosure of Invention

In order to solve the technical problems, the exhaust manifold pouring system can solve the problem of air holes on the pipe wall of a product, improve the yield and reduce the manufacturing cost.

The utility model discloses a double-runner exhaust manifold pouring system for solving the problem of pipe wall holes, which comprises a pouring basin, a straight runner, a cross runner and an inner runner, wherein a liquid outlet below the pouring basin is connected to the straight runner, an outlet of the straight runner is connected to the cross runner, a pair of inner runners are respectively arranged on the left side and the right side of the cross runner, the two pairs of inner runners are distributed in a central symmetry mode through the middle points of the cross runners, and the two pairs of inner runners are respectively connected to two exhaust manifold molds through the two pairs of inner runners.

Specifically, the two pairs of ingates comprise a first ingate and a second ingate, the first ingate and the second ingate are respectively connected to a first branch pipe and a second branch pipe of the exhaust manifold mold, the first branch pipe is positioned outside the second branch pipe, and the pipe length ratio of the first ingate to the second ingate is 1:1.28.

Further specifically, a filtering device is installed on the left side and the right side of the runner at a position between the two in-gates.

More specifically, a first feeding head is arranged at the position, close to the cavity inlet of the die, of each ingate; the die cavity inlets of the third branch pipe and the fourth branch pipe are respectively provided with a second feeding head; and a third feeding head is arranged between the second branch pipe and the third branch pipe on the die, and the side surface of the third feeding head is respectively connected to the inlets of the second branch pipe and the third branch pipe through two branch gates.

Further specifically, a fourth feeding head is arranged on the partition plate between the first branch pipe and the second branch pipe; and a fifth feeding head is arranged at the outlet flange of the exhaust manifold die.

The beneficial effects of the utility model are as follows:

Because the ratio of the length of the primary fire feeding first branch pipe to the length of the primary fire feeding second branch pipe is 1:1, the fire feeding speed of the second cylinder is slightly higher than that of the first cylinder, when molten iron in the first cylinder is converged at the pipe wall, the molten iron in the first cylinder can impact the molten iron in the second cylinder due to the slow casting process, the turbulent flow gas rolling phenomenon occurs, and holes are formed in products;

the modified structure adjusts the water feeding and fire feeding proportion of two strands, when the length proportion of the fire feeding pipes of the first branch pipe and the second branch pipe is 1:1.28, the two strands of molten iron have consistent filling speed, the adverse phenomena of temperature flow, gas rolling and the like of the assembly cannot be mutually impacted, after the length is modified, the problem of pipe wall air holes of a product is solved, the comprehensive yield is improved by about 5%, the delivery pressure is relieved, the manufacturing cost is reduced, and the quality of the inner cavity of the pipe wall is improved;

In the pouring system, in order to ensure smooth filling, molten steel turbulence and gas coiling caused by mutual impact of multiple strands of liquid inlets are avoided, the filling effect and the product quality are influenced, the improved pouring system only inlets liquid from the first branch pipe and the second branch pipe, the speeds of two liquid inlets are balanced, the two liquid inlets enter the cavity to avoid collision, the effect of head-on and head-on is achieved, and the whole filling process is stable and smooth;

The first feeding head, the second feeding head, the third feeding head, the fourth feeding head and the fifth feeding head are arranged, molten metal is fed into the die cavity to perform feeding, so that each part of the exhaust manifold is completely filled, and defects such as shrinkage cavity, material shortage and the like are avoided;

The fourth feeding riser is mainly used for feeding off cold molten iron in the early stage of pouring, preventing the casting from defects such as cold insulation air holes, and the like, and is mainly used for storing dirty and low-temperature front molten iron and also has a certain exhaust effect in the early stage of filling.

Drawings

FIG. 1 is an overall view of a dual channel exhaust manifold casting system of the present utility model that addresses wall holes.

FIG. 2 is a schematic top view of a dual channel exhaust manifold casting system according to the present utility model that addresses wall holes.

FIG. 3 is an overall view of a casting portion of a dual channel exhaust manifold casting system of the present utility model that addresses wall holes.

FIG. 4 is an enlarged schematic view of an ingate of a dual channel exhaust manifold casting system according to the present utility model that addresses wall holes.

Description of the embodiments

In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.

It is to be noted that the terms "first," "second," and the like in the description and the claims of the present application are used for distinguishing between similar objects and not for describing a particular sequential or chronological order, and it is to be understood that the terms so used may be interchanged where appropriate.

It should be noted that, in the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the directions shown in the drawings, or with respect to the components themselves in the vertical, vertical or gravitational directions; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

Examples

As shown in fig. 1-4, a dual-runner exhaust manifold pouring system for solving the problem of pipe wall holes comprises a pouring basin 1, a straight runner 2, a cross runner 3 and an inner runner.

The liquid outlet below the sprue basin 1 is connected to the sprue 2, and the outlet of the sprue 2 is connected to the runner 3. And a pair of inner pouring gates are respectively arranged on the left side and the right side of the cross gate, the two pairs of inner pouring gates are distributed in a central symmetry mode through the middle points of the cross gate, and the two pairs of inner pouring gates are respectively connected to the two exhaust manifold 4 dies. Molten metal is poured from the pouring basin 1, reaches the cross gate 3 through the sprue 2, is led out from the inner gates at two sides of the cross gate 3 respectively, and enters two different exhaust manifold 4 models through the inner gates to perform product pouring molding.

And the two inner pouring gates positioned on the same side of the cross pouring gate are respectively connected with the inner pouring gate. The two inner runners comprise a first inner runner 9 and a second inner runner 10, the first inner runner 9 and the second inner runner 10 are respectively connected to a first branch pipe 5 and a second branch pipe 6 of the exhaust manifold 4 die, the first branch pipe 5 is positioned on the outer side of the second branch pipe 6, and the pipe length ratio of the first inner runner 9 and the second inner runner 10 is 1:1.28, so that the filling speeds of two molten irons are consistent, and adverse phenomena such as assembly temperature flow and gas rolling can not be impacted mutually.

On the left and right sides of the runner 3, a filter device 11 is installed at a position between the two in-gates. The filtering device 11 can effectively filter impurities and oxides in the molten metal, improve the purity and quality of the molten metal, and further improve the forming efficiency and the product quality. The filter device 11 of the runner 3 may be a commercially available filter device 11 such as a metal filter, a ceramic filter, or a sintered filter.

A first feeding head 12 is arranged on each inner pouring channel near the cavity inlet of the die; the die cavity inlets of the third branch pipe 7 and the fourth branch pipe 8 on the die are respectively provided with a second feeding head 13; a third feeding head 14 is arranged between the second branch pipe 6 and the third branch pipe 7 on the die, and the side surface of the third feeding head 14 is connected to the inlets of the second branch pipe 6 and the third branch pipe 7 through two branch gates respectively. The first feeding head 12, the second feeding head 13, the third feeding head 14 and the fourth feeding head 15 play a feeding role on the basis of slag collection.

A fourth feeding head 15 is arranged on the partition plate between the first branch pipe 5 and the second branch pipe 6. A fifth feeding head 16 is arranged at an outlet flange of the exhaust manifold 4 die. The fourth feeding head 15 is an overflow head and mainly aims to overflow cold molten iron in the initial stage of pouring and prevent the defects of cold separation pores and the like of castings. The strain relief head is mainly used for storing dirty and low-temperature front molten iron and has a certain exhaust effect in the early stage of filling. The fifth feeding head 16 is used to solve the problem of shrinkage porosity of the small flange.

The present utility model is not limited in any way by the above-described preferred embodiments, but is not limited to the above-described preferred embodiments, and any person skilled in the art will appreciate that the present utility model can be embodied in the form of a program for carrying out the method of the present utility model, while the above disclosure is directed to equivalent embodiments capable of being modified or altered in some ways, it is apparent that any modifications, equivalent variations and alterations made to the above embodiments according to the technical principles of the present utility model fall within the scope of the present utility model.

Claims (5)

1. The utility model provides a solve double-runner exhaust manifold gating system of pipe wall hole, includes runner basin, sprue, cross gate, ingate, its characterized in that, runner basin below liquid outlet department is connected to on the sprue, the export of sprue is connected to on the cross gate, a pair of ingate has all been seted up to the cross gate left and right sides, two pairs of the ingate is with the cross gate midpoint is central symmetry and distributes, two pairs of the ingate is connected to two exhaust manifold moulds through two pairs of the ingate respectively.

2. A dual-runner exhaust manifold casting system for addressing pipe wall holes as described in claim 1, wherein two pairs of said runners comprise a first runner and a second runner, said first runner and said second runner are respectively connected to a first manifold and a second manifold of said exhaust manifold mold, said first manifold is located outside said second manifold, and a ratio of pipe lengths of said first runner and said second runner is 1:1.28.

3. A dual-runner exhaust manifold casting system for solving a pipe wall hole as described in claim 2 wherein a filter device is mounted on the left and right sides of said runner at a location between two of said in-gates.

4. A dual-channel exhaust manifold casting system for solving a pipe wall hole as claimed in claim 3, wherein a first feeding head is arranged on each of said ingates near the cavity entrance of said mold; the die cavity inlets of the third branch pipe and the fourth branch pipe are respectively provided with a second feeding head; and a third feeding head is arranged between the second branch pipe and the third branch pipe on the die, and the side surface of the third feeding head is respectively connected to the inlets of the second branch pipe and the third branch pipe through two branch gates.

5. The dual-channel exhaust manifold casting system for solving a pipe wall hole according to claim 4, wherein a fourth feeding head is arranged on a partition plate between the first branch pipe and the second branch pipe; and a fifth feeding head is arranged at the outlet flange of the exhaust manifold die.