CN219274392U

CN219274392U - Casting model structure of multi-flange exhaust pipe

Info

Publication number: CN219274392U
Application number: CN202223531793.9U
Authority: CN
Inventors: 周一
Original assignee: Cmw Tianjin Industry Co ltd
Current assignee: Cmw Tianjin Industry Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-30
Anticipated expiration: 2032-12-29

Abstract

The utility model provides a many flange formula blast pipe casting model structure, includes pouring basin, filter residue base, cross gate, goes into water piece, rising head, mouth of pipe and chilling piece, and the pouring basin links to each other with the filter residue base, and the filter residue base export links to each other with the cross gate, connects three water pieces of going into on the cross gate, and three water pieces of going into are connected with a rising head respectively, and three rising head passes through the sand core intercommunication of rising head neck and foundry goods, and the both ends of foundry goods are the mouth of pipe, and the side of every mouth of pipe all sets up the chilling piece. The utility model adopts the design of the hot riser, the double-hole air inlet flange is typeset at the upper part, a riser is arranged, meanwhile, the hot junction at the joint thickness of the pipe cavity is fed by molten iron at the upper part under the action of gravity, and meanwhile, chill is placed at the back of the hot junction or chilling paint is brushed on a sand core, so that the cooling speed is increased.

Description

Casting model structure of multi-flange exhaust pipe

Technical Field

The utility model relates to the field of casting models, in particular to a multi-flange type exhaust pipe casting model structure.

Background

The engine is the core of the automobile, and the working state of the engine determines the dynamic property, stability and efficiency of the automobile. The exhaust manifold is connected to cylinders of the engine, and exhaust gas from each cylinder is collected and introduced into the exhaust manifold. Its main function is to reduce exhaust resistance and to avoid interference between cylinders. The rotation angle of an exhaust manifold assembled by a diesel engine applied to an engineering vehicle is large, and all the exhaust manifolds are utilized to be rotary exhaust passages, so that the mixing degree of air and fuel in a cylinder is improved. The exhaust manifold of the diesel engine generally adopts independent pipe cavities and independent branches, so that exhaust gas collision in the exhaust process is avoided, and the efficiency is reduced. The traditional typesetting mode needs to arrange 8 riser heads in total at the flange positions of three air inlets, two pipe orifice two sides and the joint position of pipe cavities, typesetting is carried out to distribute one mould 4 riser heads in total, the joint position of the pipe cavities is thick in structure, high in temperature, long in cooling time, small in interval, large in riser head design difficulty, large in moulding depth and small in mould drawing gradient, and casting yield is influenced. In the traditional typesetting mode, the double-hole flange surface is arranged below, the needed sand core volume is larger, the used cold core sand is more, the manufacturing cost is higher, and the requirement of positioning precision between the core A and the core B is required to meet the dimensional precision of castings.

Disclosure of Invention

The utility model provides a multi-flange type exhaust pipe casting model structure for solving the problems.

The utility model adopts the technical scheme that:

the utility model provides a many flange formula blast pipe casting model structure, includes pouring basin, filter residue base, cross gate, goes into water piece, rising head, mouth of pipe and chilling piece, and the pouring basin links to each other with the filter residue base, and the filter residue base export links to each other with the cross gate, connects three water pieces of going into on the cross gate, and three water pieces of going into are connected with a rising head respectively, and three rising head passes through the sand core intercommunication of rising head neck and foundry goods, and the both ends of foundry goods are the mouth of pipe, and the side of every mouth of pipe all sets up the chilling piece.

The casting is a three-flange double-pipe exhaust pipe, the air inlet flanges of the single holes on two sides of the casting are respectively connected with the risers on two sides, the air inlet flanges of the two single holes are connected with the pipe orifice, and the air inlet flange of the double holes in the middle of the casting is connected with the riser in the middle.

The risers on both sides are formed by external molding.

Half of the riser in the middle is formed by a sand core, and the other half is formed by an outer mold.

The two sand cores are used for the casting, one sand core is used for forming an inner cavity and a flange air outlet, the other sand core covers the first sand core to form a part of external outline, and the two sand cores are matched with the first sand core to form a double-hole air inlet flange structure.

And a filter residue sheet is arranged in the transverse runner, and the end of the transverse runner is connected with a slag collecting bag.

The double-hole air inlet flange is typeset above the single-hole air inlet flange, and a chill is placed behind the hot junction point or a chilling coating is brushed on the sand core by the double-hole air inlet flange.

The utility model has the beneficial effects that: according to the utility model, a design of a hot riser is adopted, a double-hole air inlet flange is typeset above, a riser is arranged, meanwhile, a hot junction at a large joint thickness of a pipe cavity can be fed by molten iron above due to the action of gravity, a chill is placed behind the hot junction or a sand core is brushed with chilling paint, so that the cooling speed is increased, a riser is respectively arranged at two single-hole air inlet flanges, the two single-hole air inlet flanges are connected with a pipe orifice, and can be fed by the riser at the single-hole air inlet flange, and a chilling plate is arranged at the pipe orifice to accelerate cooling; the sand core is a combined sand core, two sand cores are matched, each sand core is positioned by three core nails, the lower core is firm, the two sand cores are positioned by taking the template as a positioning mode, the dimensional accuracy of castings is guaranteed, the double-hole flange air inlets above and the riser bases of the risers on the flange faces are formed by the sand cores, and the problem that the design of small riser with gaps is difficult is solved. The chilling coating and the chilling sheet are used for changing the solidification sequence of the exhaust pipe, and the chilling coating can accelerate the cooling speed of the position, so that the hot junction position is changed, and the solidification is smooth.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Wherein: 1-pouring cup; 2-filtering residue base; 3-a runner; 4, water entering tablets; 5-riser; 6, a pipe orifice; 7-chilling plates; 8-casting; 9-an air inlet flange; 10-riser neck; 11-slag ladle.

Detailed Description

The utility model provides a many flange formula blast pipe casting model structure, includes pouring basin 1, filter residue base 2, cross gate 3, income water sheet 4, riser 5, mouth of pipe 6 and chilling piece 7, pouring basin 1 links to each other with filter residue base 2, filter residue base 2 export links to each other with cross gate 3, connect three income water sheet 4 on the cross gate 3, three income water sheet 4 are connected with a riser 5 respectively, three riser 5 are through riser neck 10 and foundry goods 8's psammitolite intercommunication, foundry goods 8's both ends are mouth of pipe 6, every mouth of pipe 6's side all sets up chilling piece 7, foundry goods 8 be three flange double mouth of pipe blast pipe, the inlet flange 9 of the both sides single hole of foundry goods 8 are connected with riser 5 of both sides respectively, two single hole inlet flange 9 are connected with mouth of pipe 6, inlet flange 9 of the middle double hole of foundry goods 8 is connected with riser 5 in the centre to two mouth of pipe 9 tangent planes are the die joint face, the flange of double hole inlet flange 9 faces upwards.

The risers 5 on both sides are formed by an over-molding.

The middle riser 5 is formed by a sand core and an outer mold.

The two sand cores for the casting 8 are used, one sand core is used for forming an inner cavity and a flange air outlet, the other sand core covers the first sand core to form a part of external contour, and the two sand cores are matched with the first sand core to form a double-hole air inlet flange 9 structure.

The filter residue pieces are arranged in the transverse pouring gate 3, and the end of the transverse pouring gate 3 is connected with the slag collecting bag 11.

The double-hole air inlet flange 9 is typeset above the single-hole air inlet flange 9, and the double-hole air inlet flange 9 is provided with chill at the back of the hot junction or is coated with chilling paint on the sand core.

In the working process, a qualified sand mould is manufactured in a molding machine by a mould, a filter residue piece is placed, a first lower sand core is placed in the mould, another sand core is placed in the mould, the first lower sand core is covered on the mould, the first lower sand core and the second lower sand core are positioned by taking a template as a reference, quenched and tempered qualified molten iron enters from a pouring cup 1, a residual magazine of molten iron seeds is filtered out through the filter residue piece, clean molten iron enters a riser 5 through the water inlet piece and flows into a casting 8, a double-hole air inlet flange 9 is typeset above, a riser 5 is arranged, meanwhile, a hot junction at a large-thickness position of a pipe cavity is jointed by gravity can be fed by the molten iron above, a chill or a sand core is placed behind the hot junction, the cooling speed is accelerated, one riser 5 is respectively arranged at the positions of the two single-hole air inlet flanges 9, the two single-hole air inlet flanges 9 are connected with a pipe orifice 6, the hot riser can be fed for the casting 8, the casting 8 flows into a gap between the sand core and the mould, the molten iron is punched evenly, and the cooling quality of the casting 8 can be ensured by the position of the cooling riser 7.

Example 1

The utility model provides a many flange formula blast pipe casting model structure, includes pouring basin 1, filter residue base 2, cross gate 3, goes into water piece 4, riser 5, mouth of pipe 6 and chilling piece 7, and pouring basin 1 links to each other with filter residue base 2, and pouring basin 1 diameter 40mm, filter residue base 2 are 50 mm's square structure, and filter residue base 2 export links to each other with cross gate 3, and cross gate 3 sectional area is 500mm ² Three water inlet sheets 4 are connected to the runner 3, the three water inlet sheets 4 are respectively connected with one riser 5, the three risers 5 are communicated with sand cores of castings 8 through riser necks 10, two ends of the castings 8 are pipe openings 6, chilling sheets 7 are arranged on the side faces of each pipe opening 6, the castings 8 are three-flange double-pipe-opening exhaust pipes, single-hole air inlet flanges 9 on two sides of the castings 8 are respectively connected with the risers 5 on two sides, two single-hole air inlet flanges 9 are connected with the pipe openings 6, double-hole air inlet flanges 9 in the middle of the castings 8 are connected with the riser 5 in the middle, the sizes of the single-hole air inlet flanges 9 are 38 x 4mm, the cross sections of riser necks 10 are 12mm, 20mm = 240mm ² The size of the water inlet sheet 4 of the inlet flange 9 with double holes is 35 mm to 4mm, the sectional area of the riser neck 10 is 12mm to 9 mm=108 mm ² The chilling plate 7 at the pipe orifice 6 is 30 x 2mm ² The molten iron enters from the pouring cup 1 and the residue is filtered by the residue filtering sheetThe residual impurities enter the cross runner 3 and respectively enter three water inlet sheets 4, the water inlet sheets 4 are connected with a riser 5, molten iron enters the riser 5 and flows into the casting 8 through a riser neck 10, the pipe orifice 6 is cooled and solidified in advance due to the chilling sheet 7 during cooling, then the joint of the pipe cavity and the air inlet hole of the air inlet flange 9 are formed, and the riser 5 is cooled in sequence.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing describes the embodiments of the present utility model in detail, but the description is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. The utility model provides a many flange formula blast pipe casting model structure, a serial communication port, including pouring basin (1), filter residue base (2), cross gate (3), go into water sheet (4), riser (5), mouth of pipe (6) and chilling piece (7), pouring basin (1) link to each other with filter residue base (2), filter residue base (2) export links to each other with cross gate (3), connect three water sheet (4) on cross gate (3), three water sheet (4) are connected with a riser (5) respectively, three riser (5) are through riser neck (10) and foundry goods (8) psammitolite intercommunication, the both ends of foundry goods (8) are mouth of pipe (6), the side of every mouth of pipe (6) all sets up chilling piece (7).

2. The multi-flange type exhaust pipe casting model structure according to claim 1, wherein the casting (8) is a three-flange double-pipe orifice exhaust pipe, the air inlet flanges (9) of the single holes on two sides of the casting (8) are respectively connected with the risers (5) on two sides, the two air inlet flanges (9) of the single holes are connected with the pipe orifice (6), and the air inlet flange (9) of the double holes in the middle of the casting (8) is connected with the riser (5) in the middle.

3. A multi-flange exhaust pipe casting model structure according to claim 2, characterized in that the risers (5) on both sides are formed by an over-molding.

4. A multi-flange exhaust pipe casting mould structure according to claim 3, characterized in that the riser (5) in the middle is formed half by a sand core and half by an outer mould.

5. The multi-flange type exhaust pipe casting model structure according to claim 4, wherein the number of sand cores used for the casting (8) is two, one sand core is used for forming an inner cavity and a flange air outlet, the other sand core covers the first sand core to form a part of external contour, and the sand cores are matched with the first sand core to form a double-hole air inlet flange (9) structure.

6. The multi-flange type exhaust pipe casting model structure according to claim 1, wherein the filter residue pieces are arranged in the transverse pouring channel (3), and the end of the transverse pouring channel (3) is connected with the slag collecting bag (11).

7. The multi-flange type exhaust pipe casting model structure according to claim 5, wherein the double-hole air inlet flange (9) is laid over the single-hole air inlet flange (9), and the double-hole air inlet flange (9) is provided with chill behind a hot junction or is coated with chilled paint on a sand core.