CN214557180U

CN214557180U - Camshaft gating system

Info

Publication number: CN214557180U
Application number: CN202022786442.7U
Authority: CN
Inventors: 吴含; 徐伟; 曾山
Original assignee: Chengdu Jinding Precision Casting Co ltd
Current assignee: Chengdu Jinding Precision Casting Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-11-02
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a camshaft gating system, including the pouring subassembly, reposition of redundant personnel subassembly and model subassembly, pouring subassembly and reposition of redundant personnel subassembly fixed connection, reposition of redundant personnel subassembly and model subassembly fixed connection, the model subassembly includes the front end rising head, the ingate, model and tail end rising head, front end rising head one end and reposition of redundant personnel subassembly fixed connection, the front end rising head other end and ingate fixed connection, the ingate can be dismantled with the model and be connected, the model can be dismantled with the tail end rising head and be connected, the front end rising head is provided with the exhaust hole, the tail end rising head is provided with the exhaust hole, gating system's molding material is damp mould sand, it has effectively solved the not high problem of two high pouring production efficiency of mould and production quality of camshaft gating system.

Description

Camshaft gating system

Technical Field

The utility model belongs to the technical field of metal mold, concretely relates to camshaft gating system.

Background

The camshaft is a component in a piston engine and functions to control the opening and closing action of the valves. Although the rotational speed of the camshaft in a four-stroke engine is half of that of the crankshaft (in a two-stroke engine, the rotational speed of the camshaft is the same as that of the crankshaft), the rotational speed is still high, and the camshaft needs to bear large torque, so that the camshaft is high in strength and support in design, the camshaft is generally made of high-quality alloy steel or alloy steel, and the camshaft design occupies a very important position in the design process of the engine because the valve motion law relates to the power and the running characteristics of the engine.

Most of traditional camshaft blanks are produced by casting or forging and then are machined, and the quality of the camshaft blanks directly influences the final qualified rate and the production efficiency of products.

The gating system is a general term for the passage of liquid metal in the mold into the mold cavity. The typical structure of an iron casting gating system is generally composed of portions such as a sprue cup (an outsert), a sprue pit, a runner, and an ingate. Broadly speaking, ladles and casting equipment may also be considered to be part of the casting system; furthermore, the outlet opening can also be considered as an integral part of the runner system.

The existing camshaft gating system mainly comprises two side gating molds, the precoated sand shell molds are easy to shrink loose and shrink holes, the hardness of a matrix substrate is not high, and the like, so that the production efficiency of the two side gating systems is low, and the operation cost of an enterprise is greatly increased.

SUMMERY OF THE UTILITY MODEL

Not enough to the above-mentioned of prior art, the utility model provides a camshaft gating system, it has effectively solved the not high problem of two pouring production efficiency of camshaft gating system one mould and production quality.

In order to achieve the above object, the present invention provides a technical solution for solving the technical problem:

the camshaft pouring system comprises a pouring assembly, a flow distribution assembly and a model assembly, wherein the pouring assembly is fixedly connected with the flow distribution assembly;

the flow distribution assembly comprises a first cross gate, a second cross gate, a third cross gate, an inner gate and a ceramic filter screen, the middle of the first cross gate is fixedly connected with the pouring assembly, the ceramic filter screen is arranged at two ends of the first cross gate, one end of the first cross gate is fixedly connected with the second cross gate, the other end of the first cross gate is fixedly connected with the third cross gate, the third cross gate is fixedly connected with the inner gate, the second cross gate is fixedly connected with the two model assemblies, and the inner gate is fixedly connected with the two model assemblies;

the model subassembly includes front end rising head, ingate, model and tail end rising head, and front end rising head one end and reposition of redundant personnel subassembly fixed connection, the front end rising head other end and ingate fixed connection, and the ingate can be dismantled with the model and be connected, and the model can be dismantled with the tail end rising head and be connected.

According to the above technical scheme, the utility model has the advantages of it is following:

1. the middle of the first cross gate is fixedly connected with the pouring component, so that the first cross gate is quickly filled with molten metal to realize primary slag resistance, and two ends of the first cross gate are provided with ceramic filter screens for secondary filtering to remove impurities of the molten metal and prevent shrinkage cavity and shrinkage porosity when a casting is formed;

2. one end of the first cross gate is fixedly connected with the second cross gate, the other end of the first cross gate is fixedly connected with the third cross gate, the third cross gate is fixedly connected with the inner gate and is used for reasonably distributing the flow of the molten metal, and the inner gate is used for uniformly distributing the molten metal flowing into the cross gate, so that the flow rate of the molten metal is reduced, the molten metal is prevented from splashing in the cavity, and the product quality is improved;

3. the model assembly comprises a front end riser, an inner sprue, a model and a tail end riser, wherein the front end riser and the tail end riser are used for supplying metal when a casting is formed, shrinkage cavity, shrinkage porosity and slag collection are prevented, the casting is fed, and the product quality is improved;

4. the inner pouring gate is detachably connected with the model, the model is detachably connected with the tail end dead head, the model can be replaced, the service life of the product is prolonged, and the use range of the product is expanded;

5. the pouring of a plurality of products in one mould can be realized through the reasonable distribution of the flow of the molten metal, and the plurality of products start and finish the whole mould filling process at the same time.

Preferably, the pouring assembly comprises a pouring cup, a pouring cup positioning ring, a straight pouring gate pit and a straight pouring gate, the pouring cup is clamped on the pouring cup positioning ring, the straight pouring gate pit is fixedly connected with the pouring cup positioning ring, and the straight pouring gate is fixedly connected with the straight pouring gate pit;

according to above-mentioned preferred technical scheme, the utility model has the advantages of it is following:

the pouring assembly comprises a pouring cup, a pouring cup positioning ring, a direct pouring gate pit and a straight pouring gate, wherein the pouring cup is clamped on the pouring cup positioning ring, the direct pouring gate pit is fixedly connected with the pouring cup positioning ring, and the straight pouring gate is fixedly connected with the direct pouring gate pit and used for positioning the pouring cup with the direct pouring gate pit through a pouring cup positioning block so that metal liquid smoothly passes through the direct pouring gate pit to form stable metal flow.

Preferably, the pouring cup is funnel-shaped, and the positioning ring of the pouring cup is larger than a round outlet below the pouring cup and smaller than a round inlet above the pouring cup.

the pouring cup is of a funnel shape, the positioning ring of the pouring cup is larger than the round outlet below the pouring cup and smaller than the round inlet above the pouring cup, so that the pouring cup is clamped in the positioning ring of the pouring cup, and the metal liquid is prevented from overflowing during pouring.

Preferably, the front end riser is provided with an exhaust hole, and the tail end riser is provided with an exhaust hole.

the front end riser is provided with an exhaust hole, and the tail end riser is provided with an exhaust hole, so that bubbles mixed with the metal liquid can be timely exhausted, the proportion of shrinkage cavity and shrinkage porosity of the product is reduced, and the product percent of pass is improved.

Preferably, the material of the camshaft gating system is in particular green sand.

the camshaft gating system is made of green sand, so that the sand recovery rate is improved, and the production cost is reduced.

Preferably, the model is embodied as a casting master.

the model is a casting female die, so that the casting cost of the model is reduced, the production cost is reduced, and the application range of the camshaft gating system is enlarged.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a schematic perspective view of the present invention;

fig. 4 is a schematic plan view of the present invention.

Wherein, 1, casting the component; 11. a pouring cup; 12. a positioning ring for the pouring cup; 13. directly pouring a pit; 14. a sprue; 2. a flow diversion assembly; 21. a first horizontal runner; 22. a second horizontal runner; 23. a ceramic filter screen; 24. a third horizontal runner; 25. an inner pouring channel; 3. a model component; 31. a front end riser; 32. an inner gate; 33. a model; 34. and (4) a tail end riser.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

In an embodiment of the present invention, as shown in fig. 1 and 2, a camshaft gating system is provided, which includes a gating assembly 1, a shunt assembly 2 and a model assembly 3, wherein the gating assembly 1 is fixedly connected to the shunt assembly 2, the shunt assembly 2 is fixedly connected to the model assembly 3, and the camshaft gating system is made of wet sand;

the pouring assembly 1 comprises a pouring cup 11, a pouring cup positioning ring 12, a sprue pit 13 and a sprue 14, wherein the pouring cup 11 is clamped on the pouring cup positioning ring 12, the sprue pit 13 is fixedly connected with the pouring cup positioning ring 12, the sprue 14 is fixedly connected with the sprue pit 13, the pouring cup 11 is in a funnel shape, and the pouring cup positioning ring 12 is larger than a round outlet below the pouring cup 11 and smaller than a round inlet above the pouring cup 11;

the flow distribution component 2 comprises a first cross gate 21, a second cross gate 22, a third cross gate 24, an ingate 25 and a ceramic filter screen 23, the middle of the first cross gate 21 is fixedly connected with the pouring component 1, the ceramic filter screens 23 are arranged at two ends of the first cross gate 21, one end of the first cross gate 21 is fixedly connected with the second cross gate 22, the other end of the first cross gate is fixedly connected with the third cross gate 24, the third cross gate 24 is fixedly connected with the ingate 25, the second cross gate 22 is fixedly connected with the two model components 3, and the ingate 25 is fixedly connected with the two model components 3;

the model component 3 comprises a front end riser 31, an inner gate 32, a model 33 and a tail end riser 34, one end of the front end riser 31 is fixedly connected with the shunt component 2, the other end of the front end riser 31 is fixedly connected with the inner gate 32, the inner gate 32 is detachably connected with the model 33, the model 33 is detachably connected with the tail end riser 34, the front end riser 31 is provided with an exhaust hole, the tail end riser 34 is provided with an exhaust hole, and the model 33 is a casting female die.

The utility model provides a camshaft gating system's application method does: selecting a model 33 with a target size, zooming a front end riser 31 and a tail end riser 34 according to the size of the model 33, sequentially installing an inner sprue 32 on the model 33 and the tail end riser 34, fixing a sprue cup 11 on a sprue cup positioning ring 12, pouring liquid metal into the sprue cup 11, enabling the liquid metal to enter a first cross runner 21 through a sprue pit 13 and a sprue 14, filtering the liquid metal through a ceramic filter screen 23 to remove solid metal slag and other impurities, shunting the liquid metal to enter a second cross runner 22 and a third cross runner 24, shunting the liquid metal in the second cross runner 22 to enter two model components 3, and enabling the liquid metal in the third cross runner 23 to firstly enter an inner runner 25 and then enter the two model components 3; the liquid metal entering the mould component 3 enters the front end riser 31, then enters the ingate 32 and finally enters the mould 33, and the redundant liquid metal is remained in the front end riser 31 and the tail end riser 34; and finally, waiting for the liquid metal to be solidified to obtain the camshaft.

While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be considered as limited to the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.

Claims

1. The camshaft gating system is characterized by comprising a gating component (1), a shunt component (2) and a model component (3), wherein the gating component (1) is fixedly connected with the shunt component (2), and the shunt component (2) is fixedly connected with the model component (3);

the flow distribution component (2) comprises a first cross gate (21), a second cross gate (22), a third cross gate (24), an ingate (25) and ceramic filter screens (23), the middle of the first cross gate (21) is fixedly connected with the pouring component (1), the ceramic filter screens (23) are arranged at two ends of the first cross gate (21), one end of the first cross gate (21) is fixedly connected with the second cross gate (22), the other end of the first cross gate is fixedly connected with the third cross gate (24), the third cross gate (24) is fixedly connected with the ingate (25), the second cross gate (22) is fixedly connected with the two model components (3), and the ingate (25) is fixedly connected with the two model components (3);

the mold component (3) comprises a front end riser (31), an inner sprue (32), a mold (33) and a tail end riser (34), one end of the front end riser (31) is fixedly connected with the shunt component (2), the other end of the front end riser (31) is fixedly connected with the inner sprue (32), the inner sprue (32) is detachably connected with the mold (33), and the mold (33) is detachably connected with the tail end riser (34).

2. The camshaft gating system according to claim 1, wherein the gating assembly (1) comprises a pouring cup (11), a pouring cup positioning ring (12), a sprue pit (13) and a sprue (14), the pouring cup (11) is clamped on the pouring cup positioning ring (12), the sprue pit (13) is fixedly connected with the pouring cup positioning ring (12), and the sprue (14) is fixedly connected with the sprue pit (13).

3. Camshaft gating system according to claim 2, characterized in that the pouring cup (11) is funnel-shaped, the pouring cup positioning ring (12) being larger than the round outlet below the pouring cup (11) and smaller than the round inlet above the pouring cup (11).

4. Camshaft gating system according to claim 1, characterized in that the front-end riser (31) is provided with a vent and the rear-end riser (34) is provided with a vent.

5. The camshaft gating system of claim 1, wherein the material of the camshaft gating system is specifically green sand.

6. A camshaft gating system according to claim 1, characterized in that the model (33) is embodied as a casting master die.