CN116060598A - Ferrous metal liquid critical compression molding line and critical compression molding process - Google Patents

Abstract

The invention discloses a ferrous metal liquid critical compression molding line and a critical compression molding process, wherein the molding line comprises: the area of prepareeing material, pressurization area, cooling area and the area of unloading that sets gradually still include: the conveying equipment is arranged at the pressurizing area, the pressurizing equipment is arranged at the pressurizing area, the lower half type is matched with the conveying equipment, the upper half type is matched with the pressurizing equipment, the lower half type is provided with a die cavity matched with the appearance of a product, the die cavity is communicated with the outside, the die cavity is used for accommodating molten metal, the conveying equipment drives the lower half type to move among the material preparation area, the pressurizing area, the cooling area and the unloading area, when the lower half type moves to the preset position of the pressurizing area, the pressurizing equipment drives the upper half type to be pressed down into the die cavity to pressurize the molten metal in the die cavity, the lower half type and the product are cooled in the cooling area, and the lower half type and the product are unloaded and separated in the unloading area. The invention solves the problems of low production efficiency of the black metal molding and high production and maintenance cost of the mold in the prior art.

Description

Ferrous metal liquid critical compression molding line and critical compression molding process

Technical Field

The invention belongs to the technical field of metallurgy, and particularly relates to a ferrous metal liquid critical compression molding line and a critical compression molding process.

Background

The existing wear-resistant cast iron, wear-resistant steel and other ferrous metal ball mill lining plates or rectangular strips or plate-shaped parts with a plurality of mounting holes and other large-sized easily damaged parts are usually subjected to a sand casting process, the sand casting process has the problem of great environmental pollution due to binder volatilization and sand discharge, and the casting of each sand casting mould needs 35-40% of feeding heads, so that the problem of low economic benefit exists.

In order to solve the above problems, the prior patent application No. 201610349507.7 discloses a liquid die forging method disclosed by a compression casting method of a lining plate of a ball mill, and the technical scheme has the following problems: 1. the die is fixed with the press, the cooling speed is low, the die can be cleaned after a long waiting period, and the press can be put into production after the coating process, so that the problem of low production efficiency is caused;

2. the press pressurizes the molten metal enclosed in the mould, because the molten metal of ferrous metal is more than one thousand degrees, there is the inner wall of mould to bear higher fluid temperature and pressure simultaneously, leads to even better mould material H13 steel's mould damage rate also higher, needs frequent maintenance for shaping line production efficiency is low and the problem that mould maintenance cost is high.

Disclosure of Invention

The invention aims to: the liquid state critical pressurizing forming line for the ferrous metal can improve the production efficiency of ferrous metal forming and reduce the production and maintenance cost of a die.

The technical scheme of the invention is as follows: in a first aspect, a ferrous metal liquid critical press forming line includes at least: the device comprises a material preparation area, a pressurizing area, a cooling area and a discharging area which are sequentially arranged.

Further comprises: the conveying device, the pressurization device that sets up in the pressurization region, the second half type that cooperates with conveying device, and the first half type that cooperates with the pressurization device.

The lower half is provided with a die cavity matched with the shape of the product, the die cavity is communicated with the outside, and the die cavity is used for accommodating molten metal.

The conveying equipment drives the lower half mould to move among the material preparation area, the pressurizing area, the cooling area and the unloading area, and when the lower half mould moves to a preset position of the pressurizing area, the pressurizing equipment drives the upper half mould to be pressed down into the mould cavity so as to pressurize molten metal in the mould cavity.

In a further embodiment of the first aspect, the conveying apparatus comprises: the conveying platform, the conveying gyro wheel that sets up in conveying platform below to and set up a plurality of locating piece in conveying platform top.

And a plurality of positioning blocks are encircled on the conveying platform to form a positioning area.

When the lower half-type is arranged on the conveying platform, the bottom end of the lower half-type is propped against the positioning area of the conveying platform.

When the lower half mould moves to the preset position of the pressurizing area, the pressurizing equipment is propped against the conveying platform to lift the pressurizing equipment, so that the conveying rollers are spaced from the ground by a preset distance, and the difficulty in placing the lower half mould on the conveying platform can be greatly reduced.

In a further embodiment of the first aspect, the transport platform is a concave shaped platform.

When the lower half mould moves to a preset position of the pressurizing area, the lower ejection cylinder of the pressurizing equipment passes through the conveying platform to prop against the lower half mould, so that the lower half mould is separated from the conveying platform, the lower half mould can be placed on a pressurizing lower machine table of a press, the supporting area of the bottom end of the lower half mould is increased, and the stability of the mould when the upper ejection cylinder is pressed down into the mould cavity to pressurize the mould cavity is further improved.

In a further embodiment of the first aspect, the pressurizing device further comprises a lower ejector cylinder, and a positioning device connected to the lower ejector cylinder.

The positioning device comprises a positioning plate connected with the lower ejection cylinder and a plurality of positioning columns connected with the positioning plate.

And the bottom end of the conveying equipment or the lower half-shaped part is provided with a positioning hole matched with the positioning column.

When the upper half mould is pressed down to the inside of the mould cavity to pressurize the inside of the mould cavity, the positioning plate is propped against the conveying equipment or the lower half mould, the positioning column is inserted into the positioning hole, the positioning of the lower half mould and the press can be ensured, and the upper half mould can be pressed down to the inside of the mould cavity smoothly to pressurize the inside of the mould cavity.

In a further embodiment of the first aspect, the conveying apparatus further comprises: and a conveying track matched with the conveying roller.

The conveying track is communicated with the material preparation area, the pressurizing area, the cooling area and the unloading area, so that the positioning precision of the conveying equipment is improved, and the bearing capacity and the service life of the conveying equipment are improved.

In a further embodiment of the first aspect, a ferrous metal liquid state critical compression forming line further comprises: the discharging press is arranged in the discharging area, and the lower core head is arranged in the lower half type.

The discharge press comprises: the device comprises a discharging lower machine table, a discharging support column connected with the discharging lower machine table, a discharging upper machine table connected with the discharging support column and a discharging ejection cylinder connected with the discharging upper machine table.

And a discharging hole is formed in the lower half-type, one end of the discharging hole is communicated with the die cavity, and the other end of the discharging hole penetrates through the lower half-type to be communicated with the outside.

The lower core head is accommodated in the unloading hole, and one end of the unloading hole, which is close to the die cavity, is matched with the appearance of the product.

When the lower half type is placed between the lower unloading machine table of the unloading press and the ejection cylinder of unloading, the ejection cylinder of unloading drives the lower core head to move towards the direction of the die cavity of the lower half type, so that products are separated from the lower half type, the lower core head is pressurized by the unloading press, the lower core head moves towards the direction of the die cavity relative to the lower half type, the labor cost can be reduced, the manual participation rate is reduced, the safety coefficient is improved, and the work injury rate is reduced.

In a further embodiment of the first aspect, a ferrous metal liquid state critical compression forming line further comprises: the manipulator is arranged in the material preparation area and/or the pressurizing area and/or the cooling area and/or the unloading area, the manipulator is matched with the lower half type, and the manipulator is used for moving the position or the angle of the lower half type, so that automatic production can be realized, labor cost can be reduced, manual participation rate can be reduced, safety coefficient can be improved, and work injury rate can be reduced.

In a second aspect, a critical press forming process based on the liquid state critical press forming line of ferrous metal of the first aspect includes:

s1, mounting the lower half mould on conveying equipment in a material preparation area, and pouring molten metal into a mould cavity of the lower half mould.

S2, conveying the lower half mould poured with the molten metal to a pressurizing area by conveying equipment.

And S3, when the mold moves to a preset position of the pressurizing area, the pressurizing equipment presses down into the mold cavity to pressurize the molten metal in the mold cavity.

S4, after the pressurizing work is completed, the upper half mold is separated from the lower half mold, and the conveying equipment conveys the lower half mold to a cooling area for cooling.

S5, after the cooling work is completed, the lower half mold is separated from the product, so that the product and the lower half mold can be cooled together, the utilization rate of the pressurizing equipment is improved, and the production efficiency of the forming line is improved.

In a further embodiment of the second aspect, the critical press forming process further comprises: s3.1, in S3, when the molten metal in the die cavity is in a critical range of solid-liquid intersection, the pressurizing equipment pressurizes the die cavity again, so that the matching precision of an upper ejection cylinder and an upper half type of the pressurizing equipment is reduced, the damage rate of the die is reduced, the maintenance frequency is further reduced, and the problems of low production efficiency of a molding line and high maintenance cost of the die in the prior art are solved.

In a further embodiment of the second aspect, the critical press forming process further comprises: s5.1, in the process of separating the lower half mould from the product, the lower half mould is turned over to enable the product in the mould cavity to face the ground direction, then the lower half mould is separated from the product, and the product in the mould cavity can be used for assisting in demoulding of the product by utilizing the gravity of the product to face the ground direction.

The beneficial effects of the invention are as follows: 1. through setting up the lower half type on conveying equipment, but not be connected with the press, can directly send the cooling zone through conveying equipment after the compression molding of product in the lower half type to cool off, when last lower half type cools off, unload, clean and coating work, make the pressurizing equipment pressurize next lower half type, improved the utilization ratio of pressurizing equipment, improved ferrous metal fashioned production efficiency, solved the long problem that leads to of production efficiency that leads to of the long time that prior art mould cooling occupied the press.

2. Through making die cavity and external intercommunication, can make the die cavity internal pressure release a part in the in-process of lower half form from the area of prepareeing material to the pressurization region, lower half form and the reduction certain temperature of interior molten metal in addition, reduced the molten metal when the upper half form pressurizes lower half form and lower half form temperature compared with prior art, reduced the damage rate of mould, and then reduced maintenance frequency, solved the problem that prior art molded line production efficiency is low and the mould maintenance cost is high.

Drawings

FIG. 1 is a top view of a forming line of an embodiment of the conveyor apparatus of the present invention including a conveyor track.

Fig. 2 is a schematic side cross-sectional view of the press of the present invention pressurizing the interior of a mold cavity.

Fig. 3 is a schematic view of the conveying apparatus and the lower half of the conveying platform of the present invention in the form of a concave platform.

Fig. 4 is a schematic view of a pressing apparatus provided with a positioning device and a lower half type embodiment of the present invention.

Fig. 5 is an isometric schematic of an embodiment of the discharge press of the present invention.

Figure 6 is a schematic side cross-sectional view of an embodiment of the invention provided with a discharge press.

The reference numerals shown in the figures are: A. a material preparation area; B. a pressurized region; C. a cooling zone; D. a discharge region; 1. a conveying device; 11. a conveying platform; 12. conveying rollers; 13. a positioning block; 2. a mold; 21. a lower half; 22. an upper half; 23. a core setting head; 24. lifting lugs; 3. a pressurizing device; 31. pressing the machine table; 32. a lower ejection cylinder; 33. a positioning device; 34. a pressurizing prop; 35. pressing a loading machine; 36. an upper ejection cylinder; 331. a positioning plate; 332. positioning columns; 4. a discharge press; 41. discharging and discharging the materials from the machine table; 42. a discharge pillar; 43. unloading and loading the materials on a machine table; 44. a discharging ejection cylinder; 5. and a manipulator.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the invention.

The application discloses a ferrous metal liquid state critical compression molding line and a critical compression molding process, which can improve ferrous metal molding production efficiency and reduce mold production and maintenance cost.

In the first aspect

The ferrous metal forming line as shown in fig. 1 includes: the material preparation area A, the pressurizing area B, the cooling area C and the discharging area D are sequentially arranged.

The ferrous metal forming line further includes: a conveying device 1, a mould 2 and a pressurizing device 3.

The conveyor apparatus 1 may comprise a freely steerable conveyor trolley or a trailer or an electric hoist crane that moves in a fixed direction.

The die 2 comprises a lower half-form 21 matched with the conveying equipment 1 and an upper half-form 22 matched with the pressurizing equipment 3, a die cavity matched with the appearance of a product is arranged on the lower half-form 21, the die cavity is communicated with the outside and is used for containing molten metal, as shown in fig. 3, a placing flat plate is further arranged at the bottom end of the lower half-form 21 of the die 2 for the stability of transportation of the die 2, the lower half-form 21 in the embodiment is arranged on the conveying equipment 1, the lower half-form 21 of the die 2 can be directly placed on the conveying equipment 1 without adopting a fixing mechanism, the position fixing of the lower half-form 21 of the die 2 and the conveying equipment 1 can be realized by means of the dead weight of the lower half-form 21 of the die 2, or the die 2 can be positioned by means of a positioning block 13 or a guide column in a positioning area of the lower half-form 21 of the die 2, and the shape of a ball mill lining plate or a plate-shaped piece provided with a plurality of mounting holes.

The two ends of the lower half-mould 21 are respectively provided with at least two lifting lugs 24, the two ends of the lower half-mould 21 are respectively provided with two lifting lugs 24 in fig. 3, the two ends of the lower half-mould 21 are respectively provided with four lifting lugs 24 in fig. 5, the lifting lugs 24 comprise extension rods extending from the mould 2 to the outside as shown in fig. 2, and stop parts arranged at one ends of the extension rods far away from the mould 2, the stop parts can be circular plate structures as shown in fig. 2 or lifting rings, chains are connected with the extension rods or the stop parts, the stop parts limit the chains to avoid chain slipping, and when lifting and overturning of the lower half-mould can be assisted through the lifting lugs 24, workers can be prevented from directly contacting the mould 2 with higher temperature through the extension rods, so that the safety is improved, and the work injury rate is reduced.

The pressurizing device 3 shown in fig. 2 comprises a pressurizing lower machine table 31, a lower ejection cylinder 32 connected with the pressurizing lower machine table 31, pressurizing support columns 34 connected with the pressurizing lower machine table 31, a pressurizing upper machine table 35 connected with the pressurizing support columns 34, an upper ejection cylinder 36 connected with the pressurizing upper machine table 35 and a pressure system connected with the lower ejection cylinder 32 and the upper ejection cylinder 36, in the embodiment, the upper ejection cylinder 36 is connected with the upper half 22, the upper ejection cylinder 36 drives the upper half 22 to be pressed down into a mold cavity, and the molten metal in the mold cavity is pressurized, in the embodiment, a master cylinder of a pressing machine can be directly used as the upper ejection cylinder 36, so that the upper ejection cylinder 36 is distributed at four corners of the pressurizing upper machine table 35, and the bottom end of the upper ejection cylinder 36 is also provided with the pressurizing upper press table, so that the upper half 22 of the mold 2 is directly connected with the pressurizing upper press table, compared with the prior art, the structure of the pressurizing device 3 is simplified, and the stability in pressurizing is improved.

The material preparation area a may be further provided with a high-pressure air blowing device, a mold release agent spraying device and a metal heating device, wherein the high-pressure air blowing device and the mold release agent spraying device are used for slag cleaning and mold release agent coating work on the mold 2 before casting molten metal, and the metal heating device is used for preparing metal into molten metal and the like, the high-pressure air blowing device, the mold release agent spraying device and the metal heating device are arranged at the position of the material preparation area a close to the unloading area D, namely the bottom end of the material preparation area a in fig. 1, and the metal heating device is arranged at the position of the material preparation area a close to the pressurizing area B, namely the top end of the material preparation area a in fig. 1.

The pressurizing area B may be further provided with a sensor such as a stopper electrically connected to the conveying apparatus 1, the sensor and the conveying apparatus 1 may be electrically connected to a control apparatus such as a PLC, the control apparatus may send a control command to the conveying apparatus 1 according to detection data of the sensor, and when the conveying apparatus 1 moves into a detection area of the sensor, the sensor sends a detection signal to the control apparatus, and then the control apparatus sends a stop signal to the conveying apparatus 1, so as to control the conveying apparatus 1 to stop moving, or a worker sends a movement or stop signal to the control apparatus, so as to control the conveying apparatus 1 to move or stop.

The cooling area C may be further provided with a cooling device such as a cooling tank, a cooling spray gun or a cooling fan, etc. to accelerate the cooling speed of the product and the mold 2, and the product and the lower half 21 are moved to the cooling area C to be cooled, and since the mold 2 is a wearing part, the longer the service time of the production line is, the more the processing cost loss of the cooling runner is, so compared with the technical scheme that the cooling runner is processed in the mold 2, the processing cost of the cooling runner can be saved, the cooling efficiency can be improved, the production efficiency of the mold 2 can also be improved, the conveying device may further comprise an electric hoist arranged above the cooling area C, the cooling area C in fig. 1 shows an installation beam of the electric hoist, the lifting of the lower half 21 is realized by connecting the chain of the electric hoist with the lifting lug 24, and the lower half 21 and the molten metal are put into the cooling area together to be cooled.

The conveying device 1 drives the lower half-mould 21 to move among the material preparation area A, the pressurizing area B, the cooling area C and the unloading area D, when the lower half-mould 21 moves to a preset position of the pressurizing area B, the pressurizing device 3 drives the upper half-mould 22 to be pressed down into the mould cavity to pressurize molten metal in the mould cavity, the lower half-mould 21 and a product are cooled in the cooling area C, and the lower half-mould 21 and the product are unloaded and separated in the unloading area D.

1. By arranging the lower half-mould 21 on the conveying equipment 1 instead of being connected with a press, products in the lower half-mould 21 can be directly conveyed to the cooling area C for cooling through the conveying equipment 1 after being subjected to compression moulding, and when the upper half-mould 21 is subjected to cooling, unloading, cleaning and coating operation, the compression equipment 3 is used for compressing the next lower half-mould 21, so that the utilization rate of the compression equipment 3 is improved, and the production efficiency of ferrous metal moulding is improved.

2. Through making die cavity and external intercommunication, can make the lower half type 21 and the certain temperature of reduction of interior molten metal in the lower half type 21 in the in-process that lower half type 21 was transported from material preparation region A to pressurization region B, reduced the molten metal and lower half type 21 temperature when upper half type 22 was pressurized lower half type 21 compared with prior art, reduced the damage rate of mould 2, and then reduced maintenance frequency.

In a further embodiment of the conveying apparatus 1 as shown in fig. 3, the conveying apparatus 1 comprises: the conveying platform 11, the conveying roller 12 that sets up in conveying platform 11 below, and set up a plurality of locating pieces 13 above conveying platform 11.

A plurality of positioning blocks 13 are surrounded on the conveying platform 11 to form a positioning area.

When the lower half-mold 21 is disposed on the conveying platform 11, the bottom end of the lower half-mold 21 abuts against the positioning area of the conveying platform 11.

When the lower mold half 21 moves to a predetermined position of the pressing area B, the pressing device 3 lifts up against the conveying platform 11 with the conveying roller 12 spaced apart from the ground by a predetermined distance.

In this embodiment, the lower ejection cylinder 32 of the pressurizing device 3 can jack up the whole of the conveying platform 11 and the lower half-form 21, so that the conveying roller 12 is spaced a predetermined distance from the ground, then the upper half-form 22 is pressed down into the mold cavity, and the molten metal in the mold cavity is pressurized, so that the pressure applied to the conveying roller 12 can be reduced, and the service life of the conveying device 1 can be prolonged.

The conveying equipment 1 can be driven to move by arranging a moving motor on the conveying equipment 1, and connecting the moving motor with the conveying roller 12.

Or hanging rings are arranged at two ends of the conveying equipment 1, so that a winch is connected with the hanging rings, the winch is used for driving the conveying equipment 1 to move, and the embodiment can also enable a motor to be far away from the high-temperature die 2, so that the service life of the high-temperature die is prolonged.

In the production of small-sized workpieces, the mould 2 and the molten metal can be dragged manually by the conveying device 1.

In this embodiment, a guiding slope is provided on one side of the positioning block 13 near the positioning area, or a guiding slope is provided on the side wall of the mold 2 near the positioning block 13.

The positioning efficiency can be improved, the position adjustment time of the die 2 is reduced, and the production efficiency of the whole forming line is further improved.

Through locating piece 13 and set up the direction slope in its one side, can be at the mould 2 under the circumstances of the big weight of two, three hundred kilograms more, place mould 2 on delivery platform 11, very big reduction mould 2 place the degree of difficulty on delivery platform 11.

In a further embodiment of the conveyor apparatus 1 as shown in fig. 3, the conveyor deck 11 is a concave deck.

When the lower half 21 moves to the predetermined position of the pressing area B, the lower ejector cylinder 32 of the pressing apparatus 3 passes through the conveying table 11 to abut against the lower half 21, separating the lower half 21 from the conveying table 11.

In this embodiment, one or at least two conveying apparatuses 1 may be provided, and when at least two conveying apparatuses 1 are provided, as shown in fig. 1, the conveying apparatuses 1 may be provided in both the stock area a and the pressurizing area B, and after the stock conveying apparatus 1 of the stock area a places the mold 2 at the pressurizing apparatus 3, it moves to a position close to the cooling area C in a direction away from the open end of the conveying platform 11, assembles the mold 2 having been cleaned and painted on the stock conveying apparatus 1, and then performs the molten metal pouring work.

After the pressurizing device 3 pressurizes the mold 2, the pressurizing and conveying device 1 conveys the pressurized mold 2 and the product to the cooling area C, and then the material preparation and conveying device 1 places the mold 2 and the molten metal on the material preparation and conveying device at the pressurizing device 3, so that the production efficiency can be improved by circulating.

Through making delivery platform 11 be the concave shape platform, can offset at lower ejection jar 32 mould 2, when making mould 2 and delivery platform 11 separation, make delivery equipment 1 to the direction of keeping away from delivery platform 11 open end remove, and then make delivery equipment 1 leave the region that mould 2 is located, then make lower ejection jar 32 drop with mould 2, can make mould 2 place under the pressurization of press on board 31, increase the holding area of mould 2 bottom, and then improve the stability of mould 2 when last ejection jar 36 pushes down to the pouring passageway in to the die cavity.

It is also possible to reduce the material strength of the conveying platform 11 and the production cost of the conveying apparatus 1.

By pressing the lower ejector cylinder 32 against the mold 2 to separate the mold 2 from the conveying platform 11 and then pressing the upper ejector cylinder 36 down into the cavity to pressurize the molten metal in the cavity, the pressure applied to the conveying apparatus 1 can be reduced, and the service life of the conveying apparatus 1 can be prolonged.

When at least two conveying apparatuses 1 are provided, it is also possible to return the conveying apparatus 1 near the pouring area to the stock area a for the installation of the mold 2 and the pouring of the molten metal during the pressurization, and wait for or move the conveying apparatus 1 near the cooling area C toward the pressurizing apparatus 3 during the pressurization.

In a further embodiment of the pressing device 3, the pressing device 3 further comprises a lower ejector cylinder 32, and a positioning means 33 connected to the lower ejector cylinder 32.

The positioning device 33 includes a positioning plate 331 connected to the lower ejector cylinder 32, and a plurality of positioning posts 332 connected to the positioning plate 331.

The bottom end of the lower half 21 of the conveying device 1 or the die 2 is provided with a positioning hole matched with the positioning column 332.

In this embodiment, the top end of the positioning post 332 is provided with a guiding angle, or the bottom end of the positioning hole is provided with a guiding angle.

The positioning efficiency can be improved, the position adjustment time of the die 2 is reduced, and the production efficiency of the whole forming line is further improved.

When the pressurizing device 3 is pressed down into the pouring channel to pressurize the die cavity, the positioning plate 331 is propped against the conveying device 1 or the lower half 21, and the positioning column 332 is inserted into the positioning hole.

The contact area between the pressurizing device 3 and the conveying device 1 or the die 2 can be increased through the positioning plate 331, the stability of the lifting process of the conveying device 1 or the die 2 is improved, the positioning of the die 2 and the pressurizing device 3 can be ensured before pressurizing through the positioning column 332, and the upper ejection cylinder 36 of the pressurizing device 3 can be smoothly pressed down to the die cavity to pressurize molten metal in the die cavity.

The mold 2 can be placed on the pressing lower stage 31 of the pressing device 3 by the lower ejector cylinder 32, and the stability of the mold 2 at the time of pressing can be further improved.

In a further embodiment of the conveying device 1, the finished product transporting vehicle of the prior art needs to perform the functions of advancing, steering and the like, has a complex structure, can be only suitable for transporting low-weight product molds 2, and cannot meet the requirement of transporting high-temperature and high-weight molds 2.

In order to solve the above-described problem, the conveying apparatus 1 further includes: and a conveying rail engaged with the conveying roller 12.

The conveying track is sequentially communicated with a material preparation area A, a pressurizing area B, a cooling area C and a discharging area D.

In the embodiment shown in fig. 4, the pressing table of the pressing apparatus 3 is further provided with a conveying groove which is matched with the conveying rail and the conveying roller 12, and both ends of the conveying groove are matched with the conveying rail, and the size and the shape of the conveying groove are matched with the conveying roller 12.

The direction of the roller can be fixed through the conveying track, the structural complexity of the conveying roller 12 is reduced, the conveying roller can work under a high-temperature production environment, the positioning accuracy of the conveying equipment 1 is improved, the bearing capacity and the service life of the conveying equipment 1 are improved, and the problems of low production efficiency, high production cost of a forming line and high use cost caused by the fact that the finished product carrier vehicle in the prior art is complex in structure, low in positioning accuracy, poor in bearing capacity and low in service life under the high-temperature environment are solved.

The solid line of the conveying track in fig. 1 shows that the conveying track comprises a first group of conveying tracks which are sequentially communicated with a material preparation area a, a pressurizing area B, a cooling area C and a discharging area D, and a second group of conveying tracks which are arranged in the material preparation area a, and the bottom end of the material preparation area a in fig. 1 can be conveyed to the top end of the material preparation area a to perform pouring of the next round of molten metal through the lower half type 21 of cooling, discharging, cleaning and coating by arranging the second group of conveying tracks in the material preparation area a, and then the next round of molten metal pressurizing and forming work is performed, so that the forming line forms a closed loop to facilitate the dispatching and management of the conveying platform 11.

In fig. 1, the conveying rail is an endless rail which communicates with the stock area a, the pressurizing area B, the cooling area C, and the discharging area D in this order, as indicated by a broken line of the conveying rail.

The conveying platform 11 can circularly move among the material preparation area A, the pressurizing area B, the cooling area C and the unloading area D through the annular track, and the forming line forms a closed loop, so that the dispatching and the management of the conveying platform 11 are facilitated.

In a further embodiment of the discharge zone D, the ferrous metal liquid critical press forming line as shown in fig. 6 further comprises: a discharge press 4 arranged in the discharge area D, and a lower core print 23 arranged in the lower half 21.

The discharge press 4 includes: the device comprises a lower unloading machine table 41, an unloading support column 42 connected with the lower unloading machine table 41, an upper unloading machine table 43 connected with the unloading support column 42 and an ejection cylinder 44 connected with the upper unloading machine table 43.

A discharging hole is formed in the lower half-mold 21, one end of the discharging hole is communicated with the mold cavity, and the other end of the discharging hole penetrates through the lower half-mold 21 to be communicated with the outside.

The lower core heads 23 are accommodated in the unloading holes, one end of the unloading holes close to the die cavity is matched with the appearance of the product, the number and the positions of the lower core heads 23 can be adjusted according to the size and the shape of the die cavity, two lower core heads 23 are arranged in the embodiment shown in fig. 3, and an ejector rod is arranged at the bottom end of the unloading ejection cylinder 44 of the unloading press 4 shown in fig. 6.

When the lower half-mould 21 is placed between the lower unloading machine table 41 and the unloading ejection cylinder 44 of the unloading press 4, the unloading ejection cylinder 44 is pressed down to enable the ejection rod to prop against the lower core head 23 in the unloading hole, and the unloading ejection cylinder 44 drives the lower core head 23 to move towards the mould cavity direction of the lower half-mould 21, so that a product is separated from the lower half-mould 21.

After the lower half 21 is turned over to a position where the product is located below the lower half 21 as shown in fig. 6, the end of the lower half 21 provided with the die cavity is abutted against the conveying device 1, then the unloading ejection cylinder 44 is abutted against the end of the lower core print 23 away from the die cavity, and then the unloading ejection cylinder 44 drives the lower core print 23 to move in the direction of the die cavity of the lower half 21, so that the product is separated from the lower half 21.

In this embodiment, at least two conveying apparatuses 1 may be provided, wherein the conveying apparatus 1 moving between the cooling area C and the discharge area D is a discharge conveying apparatus including a discharge conveying platform, which may be a closed flat-plate-shaped platform, and a discharge conveying roller provided below the discharge conveying platform, the conveying apparatus moving between the pressurizing area B and the cooling area C is a pressurizing conveying apparatus including a pressurizing conveying platform, and a pressurizing conveying roller provided below the discharge conveying platform, which requires the lower half-form 21 to be taken out from the pressurizing apparatus 3, so that the pressurizing conveying platform is a concave-shaped platform, wherein positioning blocks may be selectively provided or not provided on the discharge conveying platform and the pressurizing conveying platform according to positioning requirements.

Can automize the unloading through the unloading press 4, reduce the human cost, reduce artifical participation rate, improve factor of safety, reduce the industrial injury rate, the lower core head 23 of this application only need guarantee before the cooling in addition sealed, to its pressurization make product and lower half type 21 separation can when unloading, still need guarantee this high-accuracy cooperation precision of sealed effect when the displacement of lower core head 23 in lower half type 21 is unnecessary, the problem that the shaping line production and the maintenance cost is high that the core head 23 is high at lower half type 21 cooperation precision leads to under the prior art has been solved.

In another embodiment, the unloading lower machine 41 may not be provided, only the lower core print 23 provided in the lower half 21 may be added, after the lower half 21 is cooled, the lower half 21 may be turned over to a position where the product is located below the lower half 21, and then the lower core print 23 may be moved in the direction of the cavity of the lower half 21 by applying pressure to the lower core print 23 by means of manual knocking, so as to separate the product from the lower half 21.

The production and use costs of the formed wire can be reduced by manual unloading.

In a further embodiment shown in fig. 1, the ferrous metal liquid critical press forming line further comprises: and the manipulators 5 are arranged in the material preparation area A and/or the pressurizing area B and/or the cooling area C and/or the unloading area D, the manipulators 5 are matched with the lower half-mould 21, and the manipulators 5 are used for moving the position or angle of the lower half-mould 21.

The automatic cleaning, coating, moving and overturning of the die 2 can be realized by controlling the action cooperation of the manipulator 5 through control equipment such as a PLC, so that the manpower is reduced, and the accident rate is reduced.

In the second aspect

A critical press forming process of a ferrous metal liquid critical press forming line based on the first aspect includes:

s1, mounting the lower half-mould 21 on the conveying equipment 1 in the material preparation area A, and pouring molten metal into a mould cavity of the lower half-mould 21.

S2, the conveying equipment 1 conveys the lower half-mould 21 poured with the molten metal to the pressurizing area B.

And S3, when the mold 2 moves to a preset position of the pressurizing area B, the pressurizing device 3 is pressed down into the mold cavity to pressurize the molten metal in the mold cavity.

S4, after the pressurizing work is completed, the upper half mold 22 is separated from the lower half mold 21, and the conveying equipment 1 conveys the lower half mold 21 to the cooling area C for cooling.

S5, after the cooling work is completed, the lower half mold 21 is separated from the product, so that the product and the lower half mold 21 can be cooled together, the utilization rate of the pressurizing equipment 3 is improved, and the production efficiency of the formed wire is improved.

The product and the die 2 can be cooled together, the utilization rate of the pressurizing equipment 3 is improved, and the production efficiency of the forming line is improved.

By moving the product and the lower mold half 21 to the cooling area C for cooling, since the mold 2 is a wearing part, the longer the line service time is, the more the processing cost of the cooling runner is lost, and therefore, compared with the technical scheme of processing the cooling runner in the mold 2, the processing cost of the cooling runner can be saved, the cooling efficiency can be improved, and the production efficiency of the mold 2 can also be improved.

In a further embodiment of the critical press forming process, the critical press forming process further comprises: s3.1, in S3, when the molten metal in the die cavity is in the critical range of solid-liquid intersection, the pressurizing device 3 pressurizes the die cavity again.

By pressurizing the mold cavity by the pressurizing device 3 when the molten metal in the mold cavity is in the critical range of solid-liquid intersection, compared with the prior art when the pressurizing device directly pressurizes the liquid metal, the matching precision of the upper half mold 22 and the lower half mold 21 can be reduced, the molten metal can be prevented from flowing out of the matching position of the upper half mold 22 and the lower half mold 21 when the matching precision is low, the difficulty of entering the mold cavity by the upper half mold 22 is low, the production and maintenance cost of a forming line is reduced, the temperature of the molten metal and the mold 2 when the pressurizing device 3 pressurizes the mold 2 is further reduced, the damage rate of the mold 2 is reduced, and the maintenance frequency is further reduced.

In addition, the upper half 22 is in contact with the molten metal in the critical range of the solid-liquid intersection, so that the adhesion rate between the molten metal and the upper half 22 can be reduced, and after the pressurizing operation is completed, the upper half 22 can be pressurized to the next lower half 21 by only cleaning or not cleaning the upper half 22, so that the preparation time of the upper half 22 is reduced.

In a further embodiment of the second aspect, the critical press forming process further comprises: s5.1, in the process of separating the lower half-mould 21 from the product, the lower half-mould 21 is turned over to enable the product in the mould cavity to face the ground direction, and then the lower half-mould 21 is separated from the product.

The overturning process can be that two electric hoist are connected in an exchanging way to the lifting lug 24, one group of electric hoist is firstly used for lifting one end of the lower half-mould 21 by the upper chain, then the other group of electric hoist is used for lifting the other end of the lower half-mould 21 by the lower chain to realize the overturning of the lower half-mould 21, and then the lower half-mould 21 is lifted and then placed on the conveying platform 11 of the conveying equipment.

The product in the die cavity can be used for assisting in demolding of the product by utilizing the gravity of the product towards the ground, and the lower half 21 and the product are cooled together in the cooling area, so that the product is high in cooling speed and high in strength, the probability of impact damage is low, and the technical scheme of quickly separating the lower half 21 from the product by enabling the lower half 21 to be overturned to enable the product in the die cavity to face the ground can be realized.

Examples

The lower half-mould 21 subjected to cleaning and coating is placed on the conveying equipment 1 in a material preparation area A, then the conveying equipment 1 moves the lower half-mould 21 to the position of a metal heating device to perform the work of pouring metal liquid, then the conveying equipment 1 moves the lower half-mould 21 containing the metal liquid to a pressurizing area B, the pressurizing equipment 3 performs the liquid critical pressurizing work on the metal liquid in the lower half-mould 21 in the pressurizing area B, then the conveying equipment 1 moves the lower half-mould 21 subjected to the pressurizing work to a cooling area C, an electric hoist or a mechanical arm is used for cooling the lower half-mould 21 in a cooling pool of the cooling area C, then the electric hoist or the mechanical arm is used for overturning the cooled lower half-mould 21 and then placing the cooled lower half-mould 21 on the conveying equipment 1 on the other side of the cooling area C, then the conveying equipment 1 moves the lower half-mould 21 to the position of a discharging press of a discharging area D, then the lower half-mould 21 and products are separated by using a discharging press 4, finally the conveying equipment 1 sends the lower half-mould 21 and the products to the position of the material preparation device and the demoulding device, the products and the lower half-mould 21 subjected to the completion of the discharging operation are sprayed and the predetermined position, and the lower half-mould 21 is subjected to rapid repeated purging and the cleaning steps are performed after the lower half-mould 21 is completed. The lower half 21 in the molten metal preparation area A can be turned or moved by a manual or mechanical arm or an electric hoist.

As described above, although the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limiting the invention itself. Various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A ferrous metal liquid state critical compression forming line, comprising at least: the material preparation area, the pressurizing area, the cooling area and the unloading area are sequentially arranged;

further comprises: a conveying device, a pressurizing device arranged in the pressurizing area, a lower half-type matched with the conveying device, and an upper half-type matched with the pressurizing device;

the lower half is provided with a die cavity matched with the shape of the product, the die cavity is communicated with the outside, and the die cavity is used for accommodating molten metal;

the conveying equipment drives the lower half mould to move among the material preparation area, the pressurizing area, the cooling area and the unloading area, and when the lower half mould moves to a preset position of the pressurizing area, the pressurizing equipment drives the upper half mould to be pressed down into the mould cavity so as to pressurize molten metal in the mould cavity.

2. A ferrous metal liquid state critical compression forming line as claimed in claim 1 wherein the conveying apparatus comprises: the conveying platform is provided with a conveying roller below the conveying platform and a plurality of positioning blocks above the conveying platform;

a plurality of positioning blocks are encircled on the conveying platform to form a positioning area;

when the lower half-shape is arranged on the conveying platform, the bottom end of the lower half-shape is propped against the positioning area of the conveying platform;

when the lower half mould moves to a preset position of the pressurizing area, the pressurizing equipment is propped against the conveying platform to lift the pressurizing equipment, so that the conveying roller is spaced from the ground by a preset distance.

3. A ferrous metal liquid state critical compression forming line as claimed in claim 2 wherein the conveying platform is a concave shaped platform;

when the lower half mould moves to a preset position of the pressurizing area, the lower ejection cylinder of the pressurizing equipment passes through the conveying platform to prop against the lower half mould, so that the lower half mould is separated from the conveying platform.

4. A ferrous metal liquid state critical compression forming line as claimed in claim 1 wherein the compression apparatus further comprises a lower ejector cylinder and a positioning device connected to the lower ejector cylinder;

the positioning device comprises a positioning plate connected with the lower ejection cylinder and a plurality of positioning columns connected with the positioning plate;

the bottom end of the conveying equipment or the lower half-shaped conveying equipment is provided with a positioning hole matched with the positioning column;

in the process of pressing the upper half-type downwards to the die cavity for pressurizing, the positioning plate is propped against the conveying equipment or the lower half-type, and the positioning column is inserted into the positioning hole.

5. A ferrous metal liquid state critical compression forming line as claimed in claim 2 wherein the conveying apparatus further comprises: a conveying rail matched with the conveying roller;

the conveying track is communicated with the material preparation area, the pressurizing area, the cooling area and the unloading area.

6. A ferrous metal liquid state critical compression forming line as claimed in claim 1 further comprising: the discharging press is arranged in the discharging area, and the lower core head is arranged in the lower half type;

the discharge press comprises: the device comprises a discharging lower machine, a discharging pillar connected with the discharging lower machine, a discharging upper machine connected with the discharging pillar and a discharging ejection cylinder connected with the discharging upper machine;

a discharging hole is formed in the lower half, one end of the discharging hole is communicated with the die cavity, and the other end of the discharging hole penetrates through the lower half to be communicated with the outside;

the lower core head is accommodated in the unloading hole, and one end of the unloading hole, which is close to the die cavity, is matched with the appearance of the product;

when the lower half mould is placed between the lower unloading machine table and the ejection cylinder of the unloading press, the ejection cylinder drives the lower core head to move towards the mould cavity direction of the lower half mould, so that the product is separated from the lower half mould.

7. A ferrous metal liquid state critical compression forming line as claimed in claim 1 further comprising: the mechanical arms are arranged in the material preparation area and/or the pressurizing area and/or the cooling area and/or the unloading area, are matched with the lower half mould, and are used for moving the position or angle of the lower half mould.

8. A critical press forming process based on a ferrous metal liquid critical press forming line as claimed in claim 1, comprising:

s1, mounting a lower half mould on conveying equipment in a material preparation area, and pouring molten metal into a mould cavity of the lower half mould;

s2, conveying the lower half with the molten metal poured into a pressurizing area by conveying equipment;

s3, when the lower half mould moves to a preset position of the pressurizing area, the pressurizing equipment drives the upper half mould to be pressed down into the mould cavity, and the molten metal in the mould cavity is pressurized;

s4, after the pressurization work is completed, separating the upper half mold from the lower half mold, and conveying the lower half mold to a cooling area by conveying equipment for cooling;

s5, separating the lower half form from the product after the cooling work is completed.

9. The critical press forming process of a ferrous metal liquid state critical press forming line of claim 8, further comprising:

s3.1, in S3, when the molten metal in the die cavity is in a critical range of solid-liquid intersection, the upper half type is used for pressurizing the die cavity.

10. The critical press forming process of a ferrous metal liquid state critical press forming line of claim 8, further comprising:

s5.1, in the process of separating the lower half mould from the product, the lower half mould is turned over to enable the product in the mould cavity to face the ground direction, and then the lower half mould is separated from the product.

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