CN221184667U - Liquid die forging die suitable for laminar filling of aluminum alloy connecting rod - Google Patents

Abstract

The utility model relates to the technical field of aluminum alloy connecting rod manufacturing, in particular to a liquid die forging die suitable for laminar flow filling of an aluminum alloy connecting rod, which comprises a lower die and a flow component, wherein the flow component comprises a transmission pipe, a pressing chamber, a material handle, a main runner, a flow dividing channel, an inner gate, a finished product cavity, a slag discharging bag, an exhaust channel and an exhaust plate, aluminum liquid is transmitted into an upper die from the transmission pipe, so that the aluminum liquid is positioned in the material handle, then flows into the finished product cavity through the material handle, the main runner, the flow dividing channel and the inner gate, the aluminum liquid is cast in the finished product cavity to form the required aluminum alloy connecting rod, and at the moment, gas in the finished product cavity can be discharged out of the lower die through the slag discharging bag, the exhaust channel and the exhaust plate to replace the wadding flow filling aluminum liquid by adopting the laminar flow filling aluminum liquid, thereby greatly improving the yield of production, improving the air rolling rate of the aluminum liquid in the filling process, improving the degree of internal tissues, and improving the physical properties, mechanical properties, metallographic microstructure microcosmic conditions and the like of the product.

Description

Liquid die forging die suitable for laminar filling of aluminum alloy connecting rod

Technical Field

The utility model relates to the technical field of manufacturing of aluminum alloy connecting rods, in particular to a liquid die forging die suitable for laminar filling of an aluminum alloy connecting rod.

Background

With the development of casting technology, a new casting process, namely liquid forging, also called extrusion casting, is developed, which is based on the processes of pressure casting, low-pressure casting and common gravity casting, and is characterized in that molten liquid aluminum alloy is directly poured into a metal model on a common hydraulic press instead of a die casting machine or other special casting equipment, and then is molded under the action of certain time and pressure to obtain a part blank.

The existing liquid die forging die structure has a good effect on a connecting rod prepared from a common aluminum alloy material, and for the aluminum alloy connecting rod prepared from a high-strength 51K material, the aluminum alloy connecting rod prepared from the multi-cavity runner structure by liquid die forging can not meet the process requirements, so that the discharge ports of 2 melt channels are respectively extended to a connecting forming part of a connecting rod body big end forming cavity and a connecting rod body small end forming cavity through a split block arranged in a melt channel, the width and the thickness of the double melt channels are controlled, so that the metal melt is simultaneously filled to all parts of the connecting rod body finished product cavity, internal air holes are reduced by about 15%, internal structure grains are thinned, the internal compactness is increased, and the strength, the hardness, the wear resistance and the casting qualification rate of the connecting rod are improved.

When the liquid die forging die is used for preparing the aluminum alloy connecting rod, aluminum liquid can circulate in the aluminum alloy connecting rod, but the existing liquid die forging die has the defects of lower whole die part yield, lower material utilization rate, larger burning loss, lower yield and the like in the process of preparing the aluminum alloy connecting rod, meanwhile, defects such as cold joint, air holes, sand holes and the like are easy to occur in the liquid forging process, in addition, air holes are formed in a product during liquid forging, and air bubbles can be generated in the product after T6 heat treatment, so that the aluminum alloy connecting rod cannot be produced in batches.

Disclosure of utility model

The utility model aims to provide a liquid die forging die suitable for laminar filling of an aluminum alloy connecting rod, and aims to solve the problems that the existing liquid die forging die has the defects of lower whole die part yield, lower material utilization rate, larger burning loss and lower yield in the process of preparing the aluminum alloy connecting rod, meanwhile, defects such as cold joint, air holes, sand holes and the like are easy to occur in the liquid forging process, in addition, air holes are formed in a product during liquid forging, and air bubbles are generated in the product after T6 heat treatment, so that the aluminum alloy connecting rod cannot be produced in batches.

In order to achieve the above purpose, the utility model provides a liquid die forging die suitable for laminar filling of an aluminum alloy connecting rod, which comprises a fixed die and a movable die, wherein the movable die is positioned at one side of the fixed die and further comprises a flow assembly; the flow assembly comprises a conveying pipe, a pressing chamber, a material handle, a main runner, a split runner, an inner sprue, a finished product cavity, a slag discharging bag, an exhaust passage and an exhaust plate, wherein the conveying pipe is communicated with the fixed die and is positioned at one side of the fixed die away from the movable die, the pressing chamber is communicated with the conveying pipe and is positioned at one side of the conveying pipe away from the fixed die, the material handle is positioned in the fixed die, the main runner is communicated with the material handle and is positioned in the fixed die and the movable die, the split runner is communicated with the main runner, the inner sprue is communicated with the split runner, the finished product cavity is communicated with the inner sprue, the slag discharging bag is communicated with the finished product cavity, the exhaust passage is communicated with the slag discharging bag, and the exhaust plate is communicated with the exhaust passage.

The flow assembly further comprises a punch, a first telescopic rod and a hydraulic cylinder, wherein the punch is in sliding connection with the pressure chamber and is positioned in the pressure chamber; the first telescopic rod is fixedly arranged on one side of the punch away from the fixed die and penetrates through the pressing chamber; the output end of the hydraulic cylinder is connected with the first telescopic rod, and the hydraulic cylinder is positioned at one end of the first telescopic rod, which is far away from the punch head

The flow assembly further comprises a liquid inlet pipe, wherein the liquid inlet pipe is communicated with the pressure chamber and is positioned on the upper surface of the pressure chamber.

Wherein the sectional area of the sub-runner is 20-30% larger than the sectional area of the main runner.

Wherein the cross section area of the inner gate is 5-15% larger than the cross section area of the shunt channel.

The liquid die forging die suitable for the laminar filling of the aluminum alloy connecting rod further comprises a driving assembly, and the driving assembly is used for driving the movable die to move.

The driving assembly comprises a connecting plate, a second telescopic rod, an electric cylinder and a supporting seat, and the connecting plate is fixedly arranged on the outer side of the movable die; the second telescopic rod is fixedly arranged on one side, away from the fixed die, of the connecting plate; the output end of the electric cylinder is connected with the second telescopic rod, and the electric cylinder is positioned at one end of the second telescopic rod, which is far away from the connecting plate; the supporting seat is fixedly arranged on one side, far away from the second telescopic rod, of the electric cylinder.

According to the liquid die forging die suitable for laminar filling of the aluminum alloy connecting rod, aluminum liquid is conveyed into the upper die from the conveying pipe, so that the aluminum liquid is located in the material handle, and then can flow into the finished product die cavity through the material handle, the main runner, the sub-runner and the inner gate, so that the aluminum liquid can be cast in the finished product die cavity to form a required aluminum alloy connecting rod, at the moment, gas in the finished product die cavity can be discharged out of the lower die through the slag discharging bag, the exhaust passage and the exhaust plate, and the mode of laminar filling the aluminum liquid is adopted to replace the flocculation filling of the aluminum liquid, so that the yield of production is greatly improved, the rolling rate of the aluminum liquid in the filling process is reduced, the compactness of internal tissues is improved, and meanwhile, the physical property, the mechanical property, the microstructure and the like of products are improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic overall structure of a liquid forging die suitable for laminar filling of an aluminum alloy connecting rod according to a first embodiment of the present utility model.

Fig. 2 is a schematic cross-sectional view of a first embodiment of the present utility model along a first telescoping rod.

Fig. 3 is a schematic structural view of a movable mold according to a first embodiment of the present utility model.

Fig. 4 is an aluminum flow state diagram of a liquid forging die suitable for use in laminar filling of an aluminum alloy connecting rod according to a first embodiment of the present utility model.

Fig. 5 is a schematic structural view of a driving assembly of a liquid forging die suitable for laminar filling of an aluminum alloy connecting rod according to a second embodiment of the present utility model.

In the figure: 101-fixed die, 102-movable die, 103-transmission pipe, 104-pressing chamber, 105-material handle, 106-main runner, 107-sub runner, 108-inner runner, 109-finished product die cavity, 110-slag ladle, 111-exhaust passage, 112-exhaust plate, 113-punch, 114-first telescopic rod, 115-hydraulic cylinder, 116-liquid inlet pipe, 201-connection plate, 202-second telescopic rod, 203-electric cylinder and 204-support seat.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements 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, in the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

First embodiment

Referring to fig. 1 to 4, fig. 1 is a schematic overall structure diagram of a liquid forging die suitable for laminar filling of an aluminum alloy connecting rod according to a first embodiment of the present utility model, fig. 2 is a schematic cross-sectional view of the first telescopic rod 114 according to the first embodiment of the present utility model, fig. 3 is a schematic structural diagram of a movable die 102 according to the first embodiment of the present utility model, and fig. 4 is a schematic flow state diagram of aluminum liquid of the liquid forging die suitable for laminar filling of an aluminum alloy connecting rod according to the first embodiment of the present utility model.

The utility model provides a liquid die forging die suitable for laminar filling of an aluminum alloy connecting rod, which comprises a die body and a die body, wherein the die body is provided with a die cavity, the die cavity is formed by a die body and a die cavity, the die cavity is formed by a die body, the: the device comprises a fixed die 101, a movable die 102 and a flow assembly, wherein the flow assembly comprises a conveying pipe 103, a pressing chamber 104, a material handle 105, a main runner 106, a diversion runner 107, an inner runner 108, a finished product cavity 109, a slag ladle 110, an exhaust passage 111, an exhaust plate 112, a punch 113, a first telescopic rod 114, a hydraulic cylinder 115 and a liquid inlet pipe 116.

In this embodiment, the movable mold 102 is located at one side of the fixed mold 101, the movable mold 102 has a protrusion, the fixed mold 101 has a groove, the protrusion of the movable mold 102 is matched with the groove of the fixed mold 101, so that the protrusion of the movable mold 102 can be inserted into the groove of the fixed mold 101, the movable mold 102 further has a limiting groove, the fixed mold 101 further has a limiting rod, the limiting rod of the fixed mold 101 is matched with the limiting groove of the movable mold 102, so that the limiting rod of the fixed mold 101 can be inserted into the limiting groove of the movable mold 102, so that the movable mold 102 and the fixed mold 101 together form a die casting mold, and further, aluminum liquid can flow in the movable mold 102 and the fixed mold 101, so as to obtain a required product.

Wherein the transfer pipe 103 is communicated with the fixed mold 101 and is positioned at one side of the fixed mold 101 far away from the movable mold 102, the pressure chamber 104 is communicated with the transfer pipe 103 and is positioned at one side of the transfer pipe 103 far away from the fixed mold 101, the material handle 105 is positioned in the fixed mold 101, the sprue 106 is communicated with the material handle 105 and is positioned in the fixed mold 101 and the movable mold 102, the shunt channel 107 is communicated with the sprue 106, the in-gate 108 is communicated with the shunt channel 107, the finished product cavity 109 is communicated with the finished product cavity 109, the exhaust plate 112 is communicated with the exhaust channel 111, the fixed mold 101, the transfer pipe 103 and the pressure chamber 104 are communicated, so that aluminum liquid in the pressure chamber 104 can be transferred from the transfer pipe 103 to the fixed mold 101, and can flow into the sprue 108 through the fixed mold 101, the shunt channel 106, the sprue 109 and the end product cavity 107, and the finished product cavity 107 can be further formed into the finished product cavity 109, and then flow into the finished product cavity 105, the finished product cavity 107, and the finished product cavity 107 can flow into the grooves 105, the finished product cavity 107 and the finished product cavity 107, and finally discharged from the channel of the exhaust plate 112 to the outside of the fixed die 101, so as to realize the antigravity natural exhaust of the aluminum liquid in the fixed die 101.

Secondly, the punch 113 is slidably connected with the pressing chamber 104 and is positioned in the pressing chamber 104; the first telescopic rod 114 is fixedly arranged on one side of the punch 113 away from the fixed die 101 and penetrates through the pressing chamber 104; the output end of the hydraulic cylinder 115 is connected with the first telescopic rod 114, the hydraulic cylinder 115 is positioned at one end of the first telescopic rod 114 far away from the punch 113, the liquid inlet pipe 116 is communicated with the pressure chamber 104 and positioned on the upper surface of the pressure chamber 104,

Again, the cross-sectional area of the shunt channel 107 is 20-30% greater than the cross-sectional area of the primary channel 106, for example: the sectional area of the diversion channel 107 is 2 x 4575 mm ², and the sectional area of the main channel 106 is 773mm ², so that the laminar filling of the aluminum liquid is realized, the aluminum liquid can stably enter the finished product cavity 109, and meanwhile, the purpose of reducing the speed and naturally discharging the gas at a constant speed can be achieved.

Meanwhile, the cross-sectional area of the in-gate 108 is 5-15% larger than the cross-sectional area of the shunt 107, for example: the in-gate 108 cross-sectional area is 3 x 160mm ² and the manifold 107 cross-sectional area is 450mm ².

In addition, the thickness of the diversion channel 107 is greater than 10-25% of the total thickness of the finished cavity 109, and the thickness of the main channel 106 is greater than 20-30% of the thickness of the diversion channel 107, for example: the thickness of the diversion channel 107 is 24mm, the total thickness of the finished product cavity 109 is 22mm, and the thickness of the main channel 106 is 30mm, so that the purposes of heat preservation and final pressurization and feeding in the filling process can be achieved.

Finally, the slag discharging bags 110 are distributed at the top, the end and the bottom of the finished cavity 109, and the slag discharging bags 110 at the top, the exhaust passage 111 and the exhaust plate 112 are communicated, so that the purposes of stable and exhaust can be achieved.

When the liquid die forging die suitable for laminar filling of the aluminum alloy connecting rod is used, heated aluminum liquid is poured into the liquid inlet pipe 116, so that the aluminum liquid can enter a left cavity in the pressing chamber 104 from the liquid inlet pipe 116, then the hydraulic cylinder 115 is started, the power output by the output end of the hydraulic cylinder 115 drives the first telescopic rod 114 to stretch, so that the punch 113 can be driven to transversely move in the pressing chamber 104, the punch 113 can move right to left in the pressing chamber 104 according to a preset speed and a certain pressure, the punch 113 can gradually push the aluminum liquid in the left cavity of the pressing chamber 104 into the conveying pipe 103 and finally convey the aluminum liquid into the material handle 105 from the conveying pipe 103, then the aluminum liquid in the material handle 105 can enter the main flow passage 106 from the material handle 105, and then flows into the diversion channel 107 through the main channel 106, finally flows into the finished product cavity 109 through the diversion channel 107 and the inner gate 108 to fill the finished product cavity 109, after the filling is finished, the punch 113 still keeps a certain pressure until the aluminum liquid is completely solidified into a die casting in the finished product cavity 109 to obtain a required finished product, at the moment, the metal liquid in the main channel 106, the diversion channel 107 and the inner gate 108 is also solidified simultaneously to form a residual cake, the gas in the finished product cavity 109 can be transmitted to the exhaust plate 112 through the slag discharging bag 110 and the exhaust passage 111 and finally discharged out of the fixed die 101 from the channel of the exhaust plate 112 to realize the exhaust of the aluminum liquid in the fixed die 101, and the liquid die forging die of the utility model improves the product yield and the material utilization rate of the die forging die, the burning loss is reduced, the yield of liquid forging is improved, the defects of cold joint, air holes, sand holes and the like in the liquid forging process are overcome, the internal air holes are reduced, the product can be subjected to T6 heat treatment in batches, the flocculation flow is replaced by adopting a mode of filling the aluminum liquid in a laminar flow manner, the yield of production is greatly improved, the gas rolling rate of the aluminum liquid in the filling process is reduced, the density of internal tissues is improved, and the physical property, the mechanical property, the microstructure microscopic condition of the metallographic structure and the like of the product are improved.

Second embodiment

Referring to fig. 5, fig. 5 is a schematic structural diagram of a driving assembly of a liquid forging die suitable for laminar filling of an aluminum alloy connecting rod according to a second embodiment of the present utility model. On the basis of the first embodiment, the liquid die forging die suitable for laminar filling of the aluminum alloy connecting rod further comprises a driving assembly, wherein the driving assembly comprises a connecting plate 201, a second telescopic rod 202, an electric cylinder 203 and a supporting seat 204.

In this embodiment, the driving assembly is located outside the movable mold 102, and by providing the driving assembly, the movable mold 102 can be driven to move, so that the movable mold 102 and the fixed mold 101 can be separated from each other, and a product finished product obtained by die casting can be taken out from the movable mold 102.

Wherein, the connecting plate 201 is fixedly arranged at the outer side of the movable mould 102; the second telescopic rod 202 is fixedly arranged on one side of the connecting plate 201 away from the fixed die 101; the output end of the electric cylinder 203 is connected with the second telescopic rod 202, and the electric cylinder 203 is positioned at one end of the second telescopic rod 202 far away from the connecting plate 201; the supporting seat 204 is fixedly arranged on one side, far away from the second telescopic rod 202, of the electric cylinder 203, the output end of the electric cylinder 203 is connected with the second telescopic rod 202, and drives the second telescopic rod 202 to stretch and retract, so that the connecting plate 201 can be driven to transversely move outside the supporting seat 204, and the movable die 102 can be driven to transversely move outside the fixed die 101.

When the liquid die forging die suitable for laminar filling of the aluminum alloy connecting rod is used, when aluminum liquid is completely solidified into a die casting in the finished die cavity 109 to obtain a required finished product, the punch 113 is returned to reset, so that the pressure on the finished product between the fixed die 101 and the movable die 102 disappears, the electric cylinder 203 is started at the moment, the power output by the output end of the electric cylinder 203 drives the second telescopic rod 202 to stretch and contract, the connecting plate 201 can be driven to transversely move outside the supporting seat 204, the movable die 102 can be driven to transversely move outside the fixed die 101, the movable die 102 can be driven to move in a direction away from the fixed die 101, the movable die 102 and the fixed die 101 can be separated, a finished product and a residual cake of the product are reserved in the movable die 102 at the moment, after the movable die 102 moves a certain distance, a certain distance exists between the movable die 102 and the fixed die 101, the finished product cannot be blocked by taking out of the finished product, and the residual cake of the product can be taken out from the fixed die 101, and the die casting process of the finished product is completed.

The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.

Claims (7)

1. The liquid die forging die suitable for laminar filling of the aluminum alloy connecting rod comprises a fixed die and a movable die, wherein the movable die is positioned at one side of the fixed die,

Also included is a flow assembly;

the flow assembly comprises a conveying pipe, a pressing chamber, a material handle, a main runner, a split runner, an inner sprue, a finished product cavity, a slag discharging bag, an exhaust passage and an exhaust plate, wherein the conveying pipe is communicated with the fixed die and is positioned at one side of the fixed die away from the movable die, the pressing chamber is communicated with the conveying pipe and is positioned at one side of the conveying pipe away from the fixed die, the material handle is positioned in the fixed die, the main runner is communicated with the material handle and is positioned in the fixed die and the movable die, the split runner is communicated with the main runner, the inner sprue is communicated with the split runner, the finished product cavity is communicated with the inner sprue, the slag discharging bag is communicated with the finished product cavity, the exhaust passage is communicated with the slag discharging bag, and the exhaust plate is communicated with the exhaust passage.

2. The liquid forging die for laminar filling of an aluminum alloy connecting rod according to claim 1, wherein,

The flow assembly further comprises a punch, a first telescopic rod and a hydraulic cylinder, wherein the punch is in sliding connection with the pressure chamber and is positioned in the pressure chamber; the first telescopic rod is fixedly arranged on one side of the punch away from the fixed die and penetrates through the pressing chamber; the output end of the hydraulic cylinder is connected with the first telescopic rod, and the hydraulic cylinder is positioned at one end of the first telescopic rod, which is far away from the punch.

3. The liquid forging die for laminar filling of an aluminum alloy connecting rod according to claim 1, wherein,

The flow assembly further comprises a liquid inlet pipe, wherein the liquid inlet pipe is communicated with the pressure chamber and is positioned on the upper surface of the pressure chamber.

4. The liquid forging die for laminar filling of an aluminum alloy connecting rod according to claim 1, wherein,

The sectional area of the diversion channel is 20-30% larger than that of the main channel.

5. The liquid forging die for laminar filling of an aluminum alloy connecting rod according to claim 1, wherein,

The cross section area of the inner gate is 5-15% larger than the cross section area of the flow dividing channel.

6. The liquid forging die for laminar filling of an aluminum alloy connecting rod according to claim 1, wherein,

The liquid die forging die suitable for the laminar filling of the aluminum alloy connecting rod further comprises a driving assembly, and the driving assembly is used for driving the movable die to move.

7. The liquid forging die for laminar filling of an aluminum alloy connecting rod according to claim 6, wherein,

The driving assembly comprises a connecting plate, a second telescopic rod, an electric cylinder and a supporting seat, and the connecting plate is fixedly arranged on the outer side of the movable die; the second telescopic rod is fixedly arranged on one side, away from the fixed die, of the connecting plate; the output end of the electric cylinder is connected with the second telescopic rod, and the electric cylinder is positioned at one end of the second telescopic rod, which is far away from the connecting plate; the supporting seat is fixedly arranged on one side, far away from the second telescopic rod, of the electric cylinder.