CN107414064B - Automatic quantitative weighing device and quantitative weighing method for molten metal - Google Patents
Automatic quantitative weighing device and quantitative weighing method for molten metal Download PDFInfo
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- CN107414064B CN107414064B CN201710584276.2A CN201710584276A CN107414064B CN 107414064 B CN107414064 B CN 107414064B CN 201710584276 A CN201710584276 A CN 201710584276A CN 107414064 B CN107414064 B CN 107414064B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
- B22D39/04—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by weight
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D2/00—Arrangement of indicating or measuring devices, e.g. for temperature or viscosity of the fused mass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides an automatic quantitative weighing device and a quantitative weighing method for molten metal, wherein the device comprises a bracket, a balance plate movably arranged on the bracket through a rotating shaft, a pouring barrel movably arranged at one end of the balance plate, a weight containing box arranged at the other end of the balance plate and a pouring barrel driving mechanism connected with the pouring barrel; the pouring ladle is eccentrically arranged on the balance plate through the rotating shaft, and the gravity center of the pouring ladle is positioned outside the balance plate; the casting ladle driving mechanism comprises a positioning assembly used for limiting the turnover of the casting ladle, a triggering assembly used for releasing the limiting assembly and a metal ball circulating mechanism used by matching with the triggering assembly. The invention has the beneficial effects that: the invention can accurately weigh the molten metal quantitatively, improve the working efficiency, improve the casting quality and save materials.
Description
Technical Field
The invention relates to the technical field of metallurgical equipment manufacturing, in particular to an automatic quantitative weighing device and a quantitative weighing method for molten metal.
Background
In the metallurgical industry, after the ores are mined, the ores are smelted in a high-temperature furnace to obtain required alloy liquid, then the alloy liquid is poured into a mold, when the amount of the poured alloy liquid is low, the solution cannot be fed in the mold cavity, shrinkage cavities and shrinkage cavities are easily formed, and casting defects are easily formed. In addition, when many metallurgy factories and scientific research institutes are smelting alloy, the material preparation calculation is often carried out, for example, the material preparation of the aluminum alloy is carried out, firstly, the aluminum ingot is cut and processed, then, the blanking is carried out by taking the weight of the aluminum ingot as the calculation basis, the time and the labor are wasted, and in addition, when the alloy liquid is subjected to degassing and deslagging, the amount of partial alloy is lost.
Therefore, accurate quantitative weighing in the metallurgical industry is an urgent problem to be solved in the alloy liquid pouring process, and has important practical significance for improving the working efficiency, improving the casting quality and saving materials.
Disclosure of Invention
The invention aims to provide an automatic quantitative weighing device and method for molten metal, which can realize instant pouring and instant quantitative weighing of molten metal when the molten metal is poured, improve the working efficiency, improve the casting quality and save materials.
The invention adopts the following technical scheme: an automatic quantitative weighing device for molten metal is characterized by comprising a bracket, a balance plate movably arranged on the bracket through a rotating shaft, a pouring basket movably arranged at one end of the balance plate, a weight containing box arranged at the other end of the balance plate and a pouring basket driving mechanism connected with the pouring basket; the pouring ladle is eccentrically arranged on the balance plate through a rotating shaft, and the gravity center of the pouring ladle is positioned outside the balance plate; the casting ladle driving mechanism comprises a positioning component used for limiting the casting ladle to turn over and a trigger component used for releasing the limiting component.
And the metal ball circulating mechanism is matched with the trigger assembly for use.
The positioning assembly comprises a positioning gear arranged on the balance plate, a fixed rod and a sliding rod, wherein the two sides of the positioning gear are meshed with each other, the fixed rod is provided with an arc-shaped rack meshed with the positioning gear, one end of the sliding rod is fixedly connected with the pouring barrel, a limiting sliding groove matched with the sliding rod is formed in the balance plate, a stop rod is arranged on the upper end face of the other end of the sliding rod and is located at one end of the stop rod, and an extension spring is arranged between the sliding rod and the limiting sliding groove.
The trigger assembly comprises a rotating rod, the middle of the rotating rod is movably arranged on the balance plate, one end of the rotating rod is abutted to the outer side of the blocking rod, the other end of the rotating rod is provided with a bearing box, the rotating rod is close to one end of the weight bearing box, the balance plate is provided with a metal ball release groove through a supporting rod, an outlet of the metal ball release groove is located right above the bearing box, and a metal ball is placed in the metal ball release groove.
The limiting component is used for limiting the rotation angle of the balance plate; the limiting assembly comprises a gear and a U-shaped limiting rod fixedly connected with the gear, and the other end of the U-shaped limiting rod can abut against the lower end face of the balance plate; and the bracket is provided with a gear groove meshed with the gear.
The both sides of balance plate all are provided with the balancing weight and hold the box.
The pouring ladle is arranged on the balance plate through a support frame, and a torsion spring is further arranged between the pouring ladle and the support frame.
The metal ball circulating mechanism comprises a bearing assembly used for bearing the metal balls which complete the triggering action.
A cross arm is arranged on the bracket below the balance plate and positioned on one side of the metal ball release groove; the bearing assembly comprises a guide groove arranged on the upper end surface of the balance plate and a bearing groove arranged on the cross arm; the receiving box is opened at one side far away from the casting barrel, and the bottom of the receiving box inclines downwards towards the opened side of the receiving box; the terminal end of the guide groove can be butted with the starting end of the bearing groove.
The receiving groove is gradually inclined downwards from an open starting end to a closed terminal, a circular through hole is formed in the bottom surface of the receiving groove, which is close to one side of the terminal, the diameter of the circular through hole is slightly larger than that of the metal ball, and the central line of the circular through hole of the receiving groove is consistent with that of the ejector rod.
The metal ball circulation mechanism further comprises a playback assembly for playing back the metal ball to the metal ball release slot; the bottom of the tail end of the bearing groove is provided with a circular through hole, and the diameter of the circular through hole is smaller than that of the metal ball.
The playback assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a top rod which are sequentially hinged; the other end of the first connecting rod is hinged with the lower end face of the balance plate, and the middle part of the second connecting rod is hinged with the cross arm; the upper end of the ejector rod can sequentially penetrate through the cross arm and the circular through hole of the bearing groove, and an arc-shaped groove is formed in the upper end of the ejector rod.
The playback assembly further comprises a playback groove which is arranged on the cross arm, the starting end of the playback groove is closed, the terminal of the playback groove is open, a circular through hole is formed in the bottom surface of the playback groove, which is close to the starting end of the playback groove, the diameter of the circular through hole is slightly larger than that of the metal ball, and the center line of the circular through hole of the playback groove deviates towards the terminal direction of the playback groove relative to the center line of the ejector rod; the bottom surface of the playback groove is gradually inclined downwards from the initial end to the terminal end; and the initial end of the metal ball release groove is provided with a ball inlet which is butted with the terminal of the playback groove. The bottom of the metal ball release groove starting end is provided with an arc-shaped groove, so that the metal ball is prevented from rolling off due to external force.
The invention also discloses a method for quantitatively weighing the molten metal liquid, which comprises the following steps:
step S1: the method comprises the following steps of obtaining the weight of a prefabricated casting, placing equivalent balancing weights in balancing weight containing boxes of balancing plates according to the weight of the prefabricated casting, enabling the balancing plates to incline, and enabling a pouring bucket to be hinged to the balancing plates and to be kept horizontal;
step S2: pouring the molten metal into the positioned pouring ladle, when the weight of the molten metal is gradually increased to the balance plate and the balance plate is reversely inclined, releasing the pouring ladle eccentrically arranged at the edge of the balance plate and rotating under the action of self gravity, and pouring the molten metal in the pouring ladle into a mold; meanwhile, the metal ball returns to the initial end of the metal ball release groove under the action of the metal ball circulating mechanism;
and step S3: when the molten metal in the pouring ladle is emptied, the torsional spring below the pouring ladle overcomes the dead weight of the pouring ladle to drive the pouring ladle to reset.
Wherein, the S2 specifically comprises:
step S201, when the weight of the molten metal is increased to the point before the balance plate is inclined reversely, the sliding rod is propped by one end of the rotating rod and cannot move, so that the arc gear at the other end of the sliding rod is meshed with the positioning gear, and the fixed rod meshed with the other side of the positioning gear overcomes the torque force generated by the casting barrel to keep balance;
step S202: when the weight of the molten metal is gradually increased to the balance plate and the balance plate is inclined reversely, the metal balls in the release grooves on the balance plate roll from the initial end to the terminal end of the release grooves along with the reverse inclination of the balance plate and fall into a bearing box at one end of the rotating rod;
step S203: the receiving box moves downwards under the gravity of the metal ball, the other end of the rotating rod moves upwards under the action of the lever and releases the sliding rod, the sliding rod is driven by the extension spring to move and is far away from the positioning gear meshed with the arc-shaped gear, and the fixed rod meshed with the positioning gear is released; the casting barrel fixedly connected with the fixed rod rotates under the action of self gravity;
step S204: the metal balls enter the guide groove of the balance plate after pressing the bearing box downwards, when molten metal in the pouring ladle is poured into the mould, the balance plate resets again and inclines, and the metal balls roll into the inclined bearing groove from the guide groove and fall into the round through hole of the bearing groove;
step S205: the balance plate continuously inclines downwards under the condition that molten metal is gradually reduced, the first connecting rod, the second connecting rod and the third connecting rod are sequentially driven to move, the ejector rod is finally driven to move upwards to penetrate through the circular through hole of the receiving groove to jack the metal ball into the playback groove, in the process that the metal ball enters the circular through hole of the playback groove and continuously moves upwards, the side wall of the initial end of the playback groove extrudes the metal ball, the metal ball is separated from the ejector rod and smoothly enters the inclined playback groove, and at the moment, the balance plate is inclined to the lowest end; the metal ball moves from the starting end to the terminal end of the playback groove and smoothly enters the release groove.
The invention has the beneficial effects that: the invention can quantitatively weigh molten metal, realize instant quantitative weighing and instant pouring, save time, avoid alloy cutting before smelting, prevent excessive pouring of molten metal and insufficient filling in a mould, and achieve the accuracy and saving of alloy liquid pouring. Finally, the device has simple and light mechanism, easy disassembly and assembly and simple and convenient operation, and can be used for quantitative weighing and pouring of molten metal under different conditions; wherein, this device still is provided with metal ball circulation mechanism, can send the initial end of metal ball release groove back with the metal ball is automatic, reduces manual operation.
Drawings
Fig. 1 is a schematic structural diagram of patent embodiment 1 and embodiment 2 of the present invention.
Fig. 2 is a rear view of patent example 1 and example 2 of the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 1.
Fig. 4 is a partially enlarged view of a portion B in fig. 1.
Fig. 5 is a partially enlarged view of a portion C in fig. 1.
Fig. 6 is a schematic structural view of a slide bar in embodiment 1 of the present invention.
Wherein the reference numerals are: 1. a support; 2. a balance plate; 3. pouring a barrel; 4. a metal ball relief groove; 5. a weight containing box; 6. a counterweight block containing box; 7. a fixing rod; 8. positioning a gear; 9. a slide bar; 10. a stop lever; 11. a receiving box; 12. a rotating rod; 13. an extension spring; 14. a gear; 15. a U-shaped limiting rod; 16. a playback slot; 17. a receiving groove; 18. a top rod; 19. a third link; 20. a second link; 21. a cross arm; 22. a first link; 23. a guide groove.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is described below by way of specific embodiments.
Example 1
The embodiment of the invention provides an automatic quantitative weighing device for molten metal, which comprises a bracket 1, a balance plate 2 movably arranged on the bracket 1 through a rotating shaft, a pouring ladle 3 movably arranged at one end of the balance plate 2, a weight containing box 5 arranged at the other end of the balance plate 2 and a pouring ladle driving mechanism connected with the pouring ladle 3, wherein the balance plate 2 is movably arranged on the bracket 1 through a rotating shaft; the casting ladle 3 is used for receiving molten metal liquid in an external casting ladle or a crucible, is eccentrically arranged on the balance plate 2 through a rotating shaft, and the center of gravity of the casting ladle is positioned outside the balance plate 2. The casting ladle driving mechanism comprises a positioning component for limiting the casting ladle 3 to turn over and a trigger component for releasing the limiting component.
And the metal ball circulating mechanism is matched with the trigger assembly for use.
Referring to fig. 3 and 4, the positioning assembly includes a positioning gear 8 vertically arranged on the balance plate 2, a fixing rod 7 and a sliding rod 9 engaged with two sides of the positioning gear 8, one ends of the fixing rod 7 and the sliding rod 9 are both provided with an arc-shaped rack engaged with the positioning gear 8, the other end of the fixing rod 7 is fixedly connected with the casting barrel 3, a limiting sliding groove used in cooperation with the sliding rod 9 is formed in the balance plate 2, a stop rod 10 is arranged on the upper end face of the other end of the sliding rod 9, and an extension spring 13 is arranged between the sliding rod 9 and the limiting sliding groove and located at one end of the stop rod 10.
The trigger assembly comprises a rotating rod 12 movably arranged on the balance plate at the middle part, one end of the rotating rod 12 is supported to the outer side of a stop rod 10, the other end of the rotating rod 12 is provided with a bearing box 11, the balance plate is close to a weight bearing box 5, one end of the balance plate is provided with a metal ball release groove 4 through a supporting rod, an outlet of the metal ball release groove 4 is located right above the bearing box 11, and a metal ball is placed in the metal ball release groove 4. The stop lever 10 and the rotating lever 12 are both cylindrical, so that the stop lever 10 and the rotating lever 12 are both in point contact, and friction force is reduced; the initiating terminal of metal ball release groove 4 is provided with the arc recess, guarantees that the metal ball just can begin to roll when the balance plate inclines to certain angle, reduces because the possibility that leads to the metal ball mistake to fall when adjusting balance or other operations before the use.
Referring to fig. 5, the device further comprises a limiting component for limiting the rotation angle of the balance plate 2; the limiting assembly comprises a gear 14 and a U-shaped limiting rod 15 fixedly connected with the gear 14 (or a square groove matched with the end part of the U-shaped limiting rod 15 is formed in the circular surface of the gear 14, the U-shaped limiting rod 15 is inserted into the square groove of the gear 14), and the other end of the U-shaped limiting rod 15 can abut against the lower end surface of the balance plate 2; the support 1 is provided with a gear groove (visible but not labeled in fig. 4) which is engaged with the gear 14. When the balance plate 2 rotates for a certain angle, the balance plate touches the U-shaped limiting rod 15, the U-shaped limiting rod 15 stops rotating, and liquid splashing caused by the fact that the balance plate 2 rotates for an overlarge angle is prevented; in addition, the position of the U-shaped limiting rod 15 can be adjusted through the rotating gear 14, and the rotating angle of the balance plate 2 can be indirectly adjusted.
The two sides of the balance plate 2 are provided with balancing weight containing boxes 6 for containing balancing weights; the balance plate is adjusted to be balanced through the balancing weight, then weights are placed, and the weight of the molten metal liquid is measured according to the lever principle.
The casting bucket 3 is arranged on the balance plate 2 through a support frame, a torsional spring is arranged between the casting bucket 3 and the support frame, and the purpose of the torsional spring is to ensure that the casting bucket can be timely reset only by self gravity after casting; the setting height of the pouring ladle 3 is higher than the height of the molten metal liquid, so that the molten metal liquid is prevented from being sprinkled in advance when the metal ball does not fall into the front balance plate 2 of the receiving box 11 and inclines.
The metal ball circulating mechanism comprises a receiving assembly used for receiving the metal balls which complete the triggering action.
A cross arm 21 is arranged on the bracket below the balance plate 2 and positioned at one side of the metal ball release groove; the bearing component comprises a guide groove 23 arranged on the upper end surface of the balance plate and a bearing groove 17 arranged on the cross arm 21; the side, far away from the casting barrel 3, of the receiving box 11 is open, and the bottom surface of the receiving box 11 inclines downwards towards the open side of the receiving box; the terminal end of the guide groove 23 can be butted against the starting end of the receiving groove 17.
The bearing groove 17 is gradually inclined downwards from the open starting end to the closed terminal, a circular through hole is arranged on the bottom surface of the bearing groove 17 close to the terminal, the diameter of the circular through hole is slightly larger than that of the metal ball, and the central line of the circular through hole of the bearing groove 17 is consistent with that of the ejector rod 18.
The metal ball circulation mechanism further comprises a playback assembly for playing back the metal ball to the metal ball release groove 4; the bottom of the tail end of the bearing groove 17 is provided with a circular through hole, and the diameter of the circular through hole is smaller than that of the metal ball.
The playback component comprises a first connecting rod 22, a second connecting rod 20, a third connecting rod 19 and a top rod 18 which are hinged in sequence; the other end of the first connecting rod 22 is hinged with the lower end face of the balance plate 2, and the middle part of the second connecting rod 20 is hinged with the cross arm 21; the upper end of the ejector rod 18 can sequentially penetrate through the cross arm 21 and the circular through hole of the bearing groove 17, and an arc-shaped groove is formed in the upper end of the ejector rod 18.
The playback assembly also comprises a playback groove 16 which is arranged on the cross arm, the starting end of the playback groove is closed, the terminal of the playback groove is open, a circular through hole is formed in the bottom surface of the playback groove 16, which is close to the starting end of the playback groove, the diameter of the circular through hole is slightly larger than that of the metal ball, and the central line of the circular through hole of the playback groove 16 deviates towards the terminal direction of the playback groove relative to the central line of the ejector rod; the bottom surface of the playback slot 16 is gradually inclined downwards from the initial end to the terminal end; the initial end of the metal ball release slot 4 is provided with a ball inlet that interfaces with the terminal end of the playback slot 16. The bottom of the starting end of the metal ball release groove 4 is provided with an arc-shaped groove, so that the metal ball is prevented from rolling off due to external force.
The working process of the automatic quantitative weighing device for molten metal liquid comprises the following steps:
the counterweight blocks are placed in the counterweight block containing boxes 6 at the two ends of the balance plate 2, so that the balance plate 2 is in a horizontal position; the weight of the prefabricated casting is obtained, equivalent weights are placed in a weight containing box 5 at one end of a balance plate 2 according to the weight of the prefabricated casting, the balance plate 2 is inclined, and a pouring barrel 3 is hinged and positioned on the balance plate 2;
pouring molten metal into a positioned pouring ladle 3, wherein when the weight of the molten metal is increased to a level that the balance plate 2 is inclined reversely, a stop rod 10 at one end of a sliding rod 9 is propped against one end of a rotating rod 12 and cannot move, so that an arc-shaped gear at the other end of the sliding rod 9 is meshed with a positioning gear 8, and a fixed rod 7 meshed with the other side of the positioning gear 8 overcomes torque force generated by the pouring ladle to keep balance;
when the weight of the molten metal gradually increases to the counter-tilting of the balance plate 2, the metal ball release groove 4 tilts, the metal balls in the groove are naturally released, roll from the initial end to the terminal end of the release groove 4 along with the counter-tilting of the balance plate 2 and fall into the receiving box 11 at one end of the rotating rod 12;
the receiving box 11 moves downwards under the gravity of the metal ball, the other end of the rotating rod 12 moves upwards under the action of a lever and releases the sliding rod 9, the sliding rod 9 is driven by the extension spring 13 to move and separate from the positioning gear 8 meshed with the arc-shaped gear, and the fixing rod 7 meshed with the positioning gear 8 is released; the casting barrel 3 fixedly connected with the fixed rod 7 rotates under the action of self gravity, and molten metal in the casting barrel 3 is cast into a mold; when the molten metal in the pouring ladle 3 is emptied, the torsion spring below the pouring ladle 3 overcomes the dead weight of the pouring ladle to drive the pouring ladle 3 to reset.
After the metal balls press the receiving box 11, the metal balls enter the guide groove 23 of the balance plate 2, when the molten metal liquid in the pouring bucket 3 is poured into the mould, the balance plate 2 resets again and inclines, and the metal balls roll into the inclined receiving groove 23 from the guide groove 23 and fall into the circular through hole of the receiving groove 23.
The balance plate 2 continuously inclines downwards under the condition that molten metal is gradually reduced, the first connecting rod 22, the second connecting rod 20 and the third connecting rod 19 are sequentially driven to move, finally the ejector rod 18 is driven to move upwards to penetrate through the circular through hole of the bearing groove 17 to jack the metal ball up into the playback groove 16, in the process that the metal ball enters the circular through hole of the playback groove 16 and continuously moves upwards, the side wall of the initial end of the playback groove 16 extrudes the metal ball, the metal ball is separated from the ejector rod 18 and smoothly enters the inclined playback groove 16, and at the moment, the balance plate 2 is inclined to the lowest end; the metal ball moves from the start end to the end of the playback groove 16 and smoothly enters the metal ball release groove 4.
After the pouring is finished, cleaning equipment pulls the stop lever 10 manually and supports the stop lever 10 by using a rotating lever 12; placing the metal ball at the initial end of the metal ball release groove again; and (4) finishing the flow of the one-time quantitative weighing of the molten metal liquid, completely resetting the device, and repeating the operations to finish the next pouring.
Example 2
The embodiment of the invention provides an automatic quantitative weighing method for molten metal, which comprises the following steps:
step S1: acquiring the weight of a prefabricated casting, placing equivalent balancing weights in a balancing weight containing box 6 of a balancing plate according to the weight of the prefabricated casting, enabling the balancing plate 2 to incline, and enabling a pouring bucket 3 to be hinged to the balancing plate 2 and keep horizontal;
step S2: pouring molten metal into the positioned pouring ladle 3, when the weight of the molten metal gradually increases to the reverse inclination of the balance plate 2, releasing the pouring ladle 3 eccentrically arranged at the edge of the balance plate 2 and rotating under the action of self gravity, and pouring the molten metal in the pouring ladle 3 into a mold; meanwhile, the metal ball returns to the initial end of the metal ball release groove under the action of the metal ball circulating mechanism;
and step S3: when the molten metal in the casting ladle 3 is emptied, the torsional spring below the casting ladle 3 overcomes the self weight of the casting ladle to drive the casting ladle 3 to reset.
Wherein, the S2 specifically comprises:
step S201, when the weight of the molten metal is increased to the point that the balance plate 2 is reversely inclined, the sliding rod 9 is propped against one end of the rotating rod 12 and cannot move, so that the arc gear at the other end of the sliding rod 9 is meshed with the positioning gear 8, and the fixed rod 7 meshed with the other side of the positioning gear 8 overcomes the torque force generated by the casting barrel to keep balance;
step S202: when the weight of the molten metal gradually increases to the counter balance plate 2 and the counter balance plate is inclined, the metal balls in the release grooves on the counter balance plate roll from the initial end to the final end of the release grooves along with the counter balance plate and fall into the receiving box 11 at one end of the rotating rod 12;
step S203: the receiving box 11 moves downwards under the gravity of the metal ball, the other end of the rotating rod 12 moves upwards under the action of the lever and releases the sliding rod 9, the sliding rod 9 moves away from the positioning gear 8 meshed with the arc-shaped gear under the driving of the extension spring 13, and the fixing rod 7 meshed with the positioning gear 8 is released; the casting barrel 3 fixedly connected with the fixed rod 7 rotates under the action of self gravity;
step S204: after pressing the bearing box 11, the metal balls enter the guide groove 23 of the balance plate 2, when the molten metal liquid in the casting barrel is poured into the mould, the balance plate 2 resets again and inclines, and the metal balls roll into the inclined bearing groove 17 from the guide groove and fall into the round through hole of the bearing groove 17;
step S205: the balance plate 2 continuously inclines downwards under the condition that molten metal is gradually reduced, the first connecting rod 22, the second connecting rod 20 and the third connecting rod 19 are sequentially driven to move, the ejector rod 18 is finally driven to move upwards to penetrate through the circular through hole of the bearing groove 17 to jack the metal ball into the playback groove 16, in the process that the metal ball enters the circular through hole of the playback groove 16 and continuously moves upwards, the side wall of the initial end of the playback groove 16 extrudes the metal ball, the metal ball is separated from the ejector rod 18 and smoothly enters the inclined playback groove 16, and at the moment, the balance plate 2 is inclined to the lowest end; the metal ball moves from the start end to the end of the playback slot 16 and smoothly enters the release slot 4.
After pouring, the pouring bucket returns to the original position under the action of the torsion spring, the equipment is cleaned, the blocking rod 10 is pulled manually and is abutted against the blocking rod 10 by the rotating rod 12, and the metal ball is placed at the initial end of the metal ball release groove again; at this time, the flow of the quantitative weighing of the molten metal is completed, the apparatus is completely reset, and the next pouring is waited.
To facilitate an understanding of the method of the present embodiment, reference is made to FIGS. 1-6.
The automatic quantitative weighing device and the method for the molten metal can quantitatively weigh the molten metal, realize instant quantitative weighing and instant pouring, save time, avoid complicated alloy cutting and processing operations before smelting, prevent excessive pouring of the molten metal or insufficient filling in a mould, and achieve the accuracy and the saving of alloy liquid pouring. Finally, the device has the advantages of simple and light mechanism, easy assembly and disassembly and simple and convenient operation, and can be used for quantitative weighing and pouring of molten metal under different conditions.
Features of the invention which are not described in the present patent application can be implemented by or using the prior art, and are not described herein again, it is to be understood that the above description is not intended to limit the invention, and the invention is not limited to the above examples, and those skilled in the art can make changes, modifications, additions or substitutions within the spirit and scope of the invention.
Claims (6)
1. An automatic quantitative weighing device for molten metal is characterized by comprising a bracket, a balance plate movably arranged on the bracket through a rotating shaft, a pouring basket movably arranged at one end of the balance plate, a weight containing box arranged at the other end of the balance plate and a pouring basket driving mechanism connected with the pouring basket; the pouring ladle is eccentrically arranged on the balance plate through a rotating shaft, and the gravity center of the pouring ladle is positioned outside the balance plate; the casting ladle driving mechanism comprises a positioning component for limiting the casting ladle to turn over and a trigger component for releasing the positioning component;
the metal ball circulating mechanism is matched with the trigger assembly;
the positioning assembly comprises a positioning gear vertically arranged on the balance plate, a fixed rod and a sliding rod, wherein the fixed rod and the sliding rod are meshed with two sides of the positioning gear;
the trigger assembly comprises a rotating rod, the middle part of the rotating rod is movably arranged on the balance plate, one end of the rotating rod abuts against the outer side of the stop rod, the other end of the rotating rod is provided with a bearing box, one end of the balance plate, which is close to the weight containing box, is provided with a metal ball release groove through a supporting rod, the outlet of the metal ball release groove is positioned right above the bearing box, and a metal ball is placed in the metal ball release groove;
the limiting component is used for limiting the rotation angle of the balance plate; the limiting assembly comprises a gear and a U-shaped limiting rod fixedly connected with the gear, and the other end of the U-shaped limiting rod can abut against the lower end face of the balance plate; a gear groove meshed with the gear is formed in the bracket;
the metal ball circulating mechanism comprises a bearing assembly for bearing the metal balls which finish the triggering action;
a cross arm is arranged on the bracket below the balance plate and positioned on one side of the metal ball release groove;
the bearing assembly comprises a guide groove arranged on the upper end surface of the balance plate and a bearing groove arranged on the cross arm; the receiving box is opened at one side far away from the casting barrel, and the bottom of the receiving box inclines downwards towards the opened side of the receiving box; the terminal end of the guide groove can be butted with the starting end of the bearing groove;
the receiving groove is gradually inclined downwards from an open starting end to a closed terminal, a round through hole is formed in the bottom surface of the receiving groove, which is close to one side of the terminal, the diameter of the round through hole is slightly smaller than that of the metal ball, and the central line of the round through hole of the receiving groove is consistent with that of the ejector rod.
2. The apparatus according to claim 1, wherein a weight block container is provided on each of both sides of the balance plate.
3. An automatic molten metal weighing apparatus according to claim 1, wherein the ladle is disposed on the balance plate via a support frame, and a torsion spring is further provided between the ladle and the support frame.
4. An automatic quantitative weighing apparatus for a molten metal according to claim 1, wherein said metal ball circulation mechanism further comprises a replay assembly for replaying said metal ball to said metal ball discharge slot;
a circular through hole is formed in the bottom of the tail end of the bearing groove, and the diameter of the circular through hole is smaller than that of the metal ball;
the playback assembly comprises a first connecting rod, a second connecting rod, a third connecting rod and a top rod which are sequentially hinged; the other end of the first connecting rod is hinged with the lower end face of the balance plate, and the middle part of the second connecting rod is hinged with the cross arm; the upper end of the ejector rod can sequentially penetrate through the circular through holes of the cross arm and the bearing groove, and an arc-shaped groove is formed in the upper end of the ejector rod;
the playback assembly also comprises a playback groove which is arranged on the cross arm, the starting end of the playback groove is closed, the terminal end of the playback groove is open, a circular through hole is arranged on the bottom surface of one side of the playback groove close to the starting end, the diameter of the circular through hole is slightly larger than that of the metal ball, and the central line of the circular through hole of the playback groove is deviated towards the terminal direction of the playback groove relative to the central line of the ejector rod;
the bottom surface of the playback slot is gradually inclined downwards from the initial end to the terminal; and the initial end of the metal ball release groove is provided with a ball inlet which is butted with the terminal of the playback groove.
5. A method for using an apparatus for automatic weighing of molten metal according to any one of claims 1 to 4, wherein the method comprises:
step S1: the method comprises the following steps of obtaining the weight of a prefabricated casting, placing equivalent balancing weights in balancing weight containing boxes of balancing plates according to the weight of the prefabricated casting, enabling the balancing plates to incline, and enabling a pouring bucket to be hinged to the balancing plates and to be kept horizontal;
step S2: pouring the molten metal into the positioned pouring ladle, when the weight of the molten metal is gradually increased to the balance plate and the balance plate is reversely inclined, releasing the pouring ladle eccentrically arranged at the edge of the balance plate and rotating under the action of self gravity, and pouring the molten metal in the pouring ladle into a mold; meanwhile, the metal ball returns to the initial end of the metal ball release groove under the action of the metal ball circulating mechanism;
and step S3: when the molten metal in the pouring ladle is emptied, the torsional spring below the pouring ladle overcomes the dead weight of the pouring ladle to drive the pouring ladle to reset.
6. A method for quantitative weighing of molten metal according to claim 5, wherein S2 is selected from the group consisting of:
step S201, when the weight of the molten metal is increased to the point before the balance plate is inclined reversely, the sliding rod is propped by one end of the rotating rod and cannot move, so that the arc-shaped rack at the other end of the sliding rod is meshed with the positioning gear, and the fixed rod meshed with the other side of the positioning gear overcomes the torque force generated by the pouring barrel to keep balance;
step S202: when the weight of the molten metal is gradually increased to the balance plate and the balance plate is inclined reversely, the metal balls in the release grooves on the balance plate roll from the initial end to the terminal end of the release grooves along with the reverse inclination of the balance plate and fall into a bearing box at one end of the rotating rod;
step S203: the receiving box moves downwards under the gravity of the metal ball, the other end of the rotating rod moves upwards under the action of the lever and releases the sliding rod, the sliding rod moves under the driving of the extension spring and is far away from the positioning gear meshed with the arc-shaped rack, and the fixed rod meshed with the positioning gear is released; the casting barrel fixedly connected with the fixed rod rotates under the action of self gravity;
step S204: the metal balls enter the guide groove of the balance plate after pressing the bearing box downwards, when molten metal in the pouring ladle is poured into the mould, the balance plate resets again and inclines, and the metal balls roll into the inclined bearing groove from the guide groove and fall into the round through hole of the bearing groove;
step S205: the balance plate continuously inclines downwards under the condition that molten metal is gradually reduced, the first connecting rod, the second connecting rod and the third connecting rod are sequentially driven to move, the ejector rod is finally driven to move upwards to penetrate through the circular through hole of the receiving groove to jack the metal ball into the playback groove, in the process that the metal ball enters the circular through hole of the playback groove and continuously moves upwards, the side wall of the initial end of the playback groove extrudes the metal ball, the metal ball is separated from the ejector rod and smoothly enters the inclined playback groove, and at the moment, the balance plate is inclined to the lowest end; the metal ball moves from the starting end to the terminal end of the playback groove and smoothly enters the release groove.
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| CN108225508A (en) * | 2018-04-11 | 2018-06-29 | 南华大学 | A kind of sampling weighing device for being used to control fused ceramic fiber flow |
| CN109506754B (en) * | 2018-12-11 | 2020-09-01 | 比尔信息技术(北京)有限公司 | Multipurpose electronic weighing device |
| CN111421110B (en) * | 2020-04-08 | 2021-06-29 | 湖北忠和冶金机械制造股份有限公司 | Casting method and equipment for investment casting precision casting |
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| TWI466740B (en) * | 2007-02-15 | 2015-01-01 | Sintokogio Ltd | Automatic pouring method and device |
| CN201040592Y (en) * | 2007-06-03 | 2008-03-26 | 殷秋强 | Quantitative feeding weighing device for packaging machine |
| CN104439222B (en) * | 2014-12-22 | 2016-09-07 | 山东时风（集团）有限责任公司 | A kind of high-precision full-automatic casting machine |
| CN207154770U (en) * | 2017-07-18 | 2018-03-30 | 烟台工程职业技术学院 | A kind of automatic ration weighing device of molten metal bath |
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