A melting furnace for a casting mold of a cast iron pot and its melting method

Abstract

The present invention relates to the technical field of smelting furnace equipment, and discloses a smelting furnace for casting iron pot molds, including a smelting furnace main body. Linkage shafts are fixedly installed on both sides of the smelting furnace main body. An elliptical transmission slider is fixedly sleeved on the outer surface of the right linkage shaft, and a connecting ear seat is movably sleeved on the outer surface of the transmission slider. Four groups of support balls arranged linearly and symmetrically are provided on the outer surface of the transmission slider, and two corresponding groups of support balls are fixedly connected by a limit connecting frame. For the smelting furnace for casting iron pot molds and its smelting method, with the arrangement of the transmission slider and support balls on the linkage shaft, under the influence of the self-weight of the smelting furnace main body, it can maintain a vertical state without being driven by the torque of the driving motor, and cooperate with the locking link and pressure spring on the locking frame to form a locking action, instead of relying on the self-locking of the driving motor to form a suspension fixing action for the smelting furnace.

Description

Technical Field

[0001] The present invention relates to the technical field of smelting furnace equipment, and particularly to a smelting furnace for casting iron pans and its smelting method. Background Art

[0002] As an important device for smelting metal alloys, the smelting furnace forces solid metal alloys to melt into a liquid state by heating, and injects the liquid metal alloy into a mold with a specific shape to cast products with a specific shape.

[0003] Among them, in order to facilitate pouring out the heated and melted metal alloy from the crucible, a tilting smelting furnace structure is provided in the prior art. The entire furnace body is suspended on a horizontal shaft frame, and the liquid metal alloy in the smelting furnace is poured out by means of motor drive, and the self-locking of the speed reducer on the drive motor is used to fix the smelting furnace in a suspended state. In order to prevent the smelting furnace from tilting during smelting, there are extremely high requirements for controlling the rotation angle of the drive motor. However, it is also extremely easy to cause a slight tilting phenomenon of the smelting furnace during rotation due to wear, and the wear of the gears in the speed reducer on it is aggravated under the influence of gravity, which greatly affects the service life of the speed reducer on the drive motor, and the stability and reliability are poor.

[0004] Therefore, there is an urgent need for a smelting furnace structure for casting molds to solve the defects existing in the existing tilting smelting furnace during actual use. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] The present invention provides a smelting furnace for casting iron pans and its smelting method, which has the advantages of being able to stably fix the smelting in a suspended state without being prone to tilting, having a low rotation control precision for the drive motor thereon, high controllability, optimizing the structural composition of the drive motor thereon, and having high stability and reliability. It solves the problem that the liquid metal alloy in the smelting furnace is poured out by means of motor drive, and the self-locking of the speed reducer on the drive motor is used to fix the smelting furnace in a suspended state. In order to prevent the smelting furnace from tilting during smelting, there are extremely high requirements for controlling the rotation angle of the drive motor. However, it is also extremely easy to cause a slight tilting phenomenon of the smelting furnace during rotation due to wear, and the wear of the gears in the speed reducer on it is aggravated under the influence of gravity, which greatly affects the service life of the speed reducer on the drive motor, and the stability and reliability are poor.

[0007] (II) Technical Solutions

[0008] The present invention provides the following technical solution: A melting furnace for a casting iron pot mold, including a melting furnace main body. On both sides of the melting furnace main body, linkage shafts are respectively and fixedly installed. On the outer surface of the right linkage shaft, a transmission slider with an elliptical structure is fixedly sleeved. And on the outer surface of the transmission slider, a connecting ear seat is movably sleeved. On the outer surface of the transmission slider, four groups of support balls are arranged in a linearly symmetrical manner. And between the corresponding two groups of support balls, they are fixedly connected by a limit connecting frame. A friction drive connection is formed between the transmission slider and the connecting ear seat through the support balls. On the outside of the right connecting ear seat, a driving motor is fixedly sleeved and forms a transmission connection with the linkage shaft.

[0009] Preferably, on the top of one side of the right connecting ear seat, a locking frame is fixedly installed. And inside the locking frame, a pressure spring is movably sleeved. And a transmission connection is formed between the pressure spring and a locking connecting rod movably sleeved inside it. On one side of the outer surface of the locking connecting rod and inside the cavity of the locking frame, a magnetic pressing block is fixedly sleeved. One end of the locking connecting rod penetrates through the locking frame and is mutually clamped with the inside of one of the support balls. Inside the locking frame and at the relative position of the magnetic pressing block, an electromagnetic coil is provided.

[0010] Preferably, on one side of the outer surface of the magnetic pressing block, a conductive coil I is fixedly sleeved. And on one side inside the locking frame, a conductive coil II is provided. At the same time, the conductive coil I, the conductive coil II and the starting current on the driving motor form a series circuit and form a parallel circuit with the electromagnetic coil.

[0011] Preferably, in the initial state, the center of gravity of the melting furnace main body is below the central axis of the driving motor. And under the influence of gravity, the connection line between the two foci of the transmission slider with an elliptical structure on the linkage shaft is horizontally arranged.

[0012] Preferably, inside the support ball corresponding to the central axis of the locking frame, a groove with an inner diameter the same as the outer diameter of the locking connecting rod is provided. And the distance between the conductive coil I and the conductive coil II is greater than the length of the locking connecting rod extending into the groove of the support ball.

[0013] A melting method for a melting furnace for a casting iron pot mold includes the following operation process:

[0014] S1. Put the raw materials and additives to be melted into the melting furnace main body, and turn on the melting furnace main body to perform high-temperature heating treatment on the raw materials and additives inside it to melt them into a liquid state;

[0015] S2. Connect the control power supplies of the electromagnetic coil and the drive motor, so that the electromagnetic coil is first energized and triggered, generating a magnetic field opposite to that of the magnetic pressure block, forcing the magnetic pressure block and the locking connecting rod thereon to move outward and compress the pressure spring, causing one end of the locking connecting rod to disengage from the groove in the corresponding support ball and unable to lock it;

[0016] S3. During the continuous outward movement of the magnetic pressure block and the locking connecting rod thereon, the conductive coil I thereon contacts the conductive coil II on the locking frame and closes the current circuit on the drive motor, causing it to rotate, driving the linkage shaft and the transmission slider and support ball thereon to rotate along the track of the inner wall of the connecting ear seat, and tilting the main body of the melting furnace to a certain angle so that the molten metal liquid therein is poured into the mold to form a product with a specific shape;

[0017] S4. Disconnect the control power supplies of the electromagnetic coil and the drive motor again. Under the influence of gravity, the main body of the melting furnace returns to the vertical state, forcing the transmission slider and support ball thereon to return to the initial state. Under the elastic force of the pressure spring, the locking connecting rod is forced to move inward and extend into the groove of the support ball at the corresponding position, locking it again. Then repeat the above steps to realize the casting operation of products with specific shapes.

[0018] (III) Beneficial effects

[0019] The present invention has the following beneficial effects:

[0020] 1. For the melting furnace for casting iron pans and its melting method, the arrangement of the transmission slider and support ball on the linkage shaft makes use of the influence of the self-gravity of the main body of the melting furnace to keep it in a vertical state when not driven by the torque of the drive motor, and cooperate with the locking connecting rod and pressure spring on the locking frame to lock it. Compared with the existing melting furnace, it no longer needs to use the self-locking of the drive motor to fix the melting furnace in suspension, nor does it require the drive motor to have a high rotational accuracy. At the same time, it will not cause the melting furnace to tilt due to the error of the rotational accuracy, and aggravate the wear of the gear meshing transmission thereon. Therefore, the service life of the speed reducer on the melting furnace is effectively improved, and the stability and reliability are relatively high.

[0021] 2. The melting furnace for the casting iron pot mold and its melting method. Regarding the settings of the magnetic pressing block, conductive coil I, and conductive coil II on the locking frame, the electromagnetic coil can be triggered first to disconnect the locking connecting rod from the supporting ball, and then the driving motor is triggered and driven by the linkage shaft to drive the main body of the melting furnace to tilt at a certain angle. The operation is simple and the control is convenient, making the controllability of the melting furnace relatively high. At the same time, the control of the pure mechanical structure makes the melting furnace highly adaptable to the environment and not prone to damage or mis-triggering phenomena. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the present invention;

[0023] Figure 2 It is a side view of the structure of the present invention;

[0024] Figure 3 It is the structure of the present invention Figure 1 Enlarged schematic view of part A.

[0025] In the figure: 1. Main body of the melting furnace; 2. Linkage shaft; 3. Transmission slider; 4. Supporting ball; 5. Limit connecting frame; 6. Connecting ear seat; 7. Driving motor; 8. Locking frame; 9. Pressure spring; 10. Locking connecting rod; 11. Magnetic pressing block; 12. Electromagnetic coil; 13. Conductive coil I; 14. Conductive coil II. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figure 1 - Figure 2 , a melting furnace for a casting iron pot mold, including a main body 1 of the melting furnace. Linkage shafts 2 are respectively fixedly installed on both sides of the main body 1 of the melting furnace. An ear seat structure fixedly connected to the support leg is movably sleeved on the outer surface of the left linkage shaft 2. A transmission slider 3 in an elliptical structure is fixedly sleeved on the outer surface of the right linkage shaft 2. A connecting ear seat 6 is movably sleeved on the outer surface of the transmission slider 3. A support leg is fixedly installed at the bottom of the connecting ear seat 6 to suspend the main body 1 of the melting furnace. Four groups of support balls 4 arranged linearly and symmetrically are provided on the outer surface of the transmission slider 3. And the corresponding two groups of support balls 4 are fixedly connected by a limit connecting frame 5. A friction transmission connection is formed between the transmission slider 3 and the connecting ear seat 6 through the support balls 4. A driving motor 7 is fixedly sleeved outside the right connecting ear seat 6 and forms a transmission connection with the linkage shaft 2.

[0028] In this technical solution, a locking framework 8 is fixedly installed at the top of one side of the right connecting ear seat 6. As Figure 3 shown, a pressure spring 9 is movably sleeved inside the locking framework 8, and a transmission connection is formed between the pressure spring 9 and a locking link 10 movably sleeved inside it. On one side of the outer surface of the locking link 10 and inside the cavity of the locking framework 8, a magnetic pressing block 11 is fixedly sleeved. One end of the locking link 10 penetrates through the locking framework 8 and is mutually clamped with the inside of one group of support balls 4. Inside the locking framework 8 and at a position opposite to the magnetic pressing block 11, an electromagnetic coil 12 is provided. The magnetic field generated after the electromagnetic coil 12 is energized is opposite to the magnetic pole of the magnetic pressing block 11, so as to drive the magnetic pressing block 11 to move outward and compress the pressure spring 9.

[0029] In this technical solution, a conductive coil I 13 is fixedly sleeved on one side of the outer surface of the magnetic pressing block 11, and a conductive coil II 14 is provided on one side inside the locking framework 8. At the same time, the conductive coil I 13, the conductive coil II 14 and the starting current on the drive motor 7 form a series circuit, and form a parallel circuit with the electromagnetic coil 12. So that when the current is switched on, the electromagnetic coil 12 is first triggered, and after driving the magnetic pressing block 11 to move outward by a corresponding displacement, when the conductive coil I 13 and the conductive coil II 14 come into contact, the drive motor 7 is started, and at the same time, the electromagnetic coil 12 can be kept in the state of being connected to the circuit.

[0030] In this technical solution, in the initial state, the center of gravity of the melting furnace body 1 is below the central axis of the drive motor 7, and under the influence of gravity, the connection line between the two foci of the transmission slider 3 with an elliptical structure on the linkage shaft 2 is horizontally arranged, so as to ensure that after the melting furnace body 1 stops rotating, under the action of gravity, the transmission slider 3 and the support balls 4 on it can automatically return to the initial position.

[0031] In this technical solution, a groove with an inner diameter the same as the outer diameter of the locking link 10 is provided inside the support ball 4 corresponding to the central axis of the locking framework 8, and the distance between the conductive coil I 13 and the conductive coil II 14 is greater than the length of the locking link 10 extending into the groove of the support ball 4. So that when the electromagnetic coil 12 is not energized, the support ball 4 and the transmission slider 3 with an elliptical structure can be locked under the elastic force of the pressure spring 9, and when the electromagnetic coil 12 is energized, the locking link 10 can completely disengage from the support ball 4, and when the drive motor 7 is triggered, the transmission slider 3 and the support ball 4 can be effectively driven to rotate accordingly.

[0032] A melting method for a melting furnace used for a casting iron pot mold includes the following operation processes:

[0033] S1. Put the raw materials and additives to be melted into the main body 1 of the melting furnace, and turn on the main body 1 of the melting furnace to perform high-temperature heating treatment on the raw materials and additives inside to melt them into a liquid state;

[0034] S2. Connect the control power supplies of the electromagnetic coil 12 and the drive motor 7, so that the electromagnetic coil 12 is first energized and triggered, and generates a magnetic field opposite to the magnetic pressure block 11, forcing the magnetic pressure block 11 and the locking connecting rod 10 thereon to move outward to compress the pressure spring 9, causing one end of the locking connecting rod 10 to disengage from the groove in the corresponding support ball 4 and unable to form a locking action on it;

[0035] S3. During the continuous outward movement of the magnetic pressure block 11 and the locking connecting rod 10 thereon, the conductive coil I 13 thereon contacts the conductive coil II 14 on the locking frame 8 to connect the current circuit on the drive motor 7, causing it to rotate, and driving the linkage shaft 2 and the transmission slider 3 and the support ball 4 thereon to rotate along the track of the inner wall of the connecting ear seat 6, and tilting the main body 1 of the melting furnace to a certain angle so that the molten metal liquid inside it is poured into the mold to form a product with a specific shape;

[0036] S4. Disconnect the control power supplies of the electromagnetic coil 12 and the drive motor 7 again. Under the influence of gravity, the main body 1 of the melting furnace returns to the vertical state, forcing the transmission slider 3 and the support ball 4 thereon to return to the initial state, and under the elastic force of the pressure spring 9, forcing the locking connecting rod 10 to move inward and extend into the groove of the corresponding support ball 4 to form a lock on it again, and then repeat the above steps to realize the casting operation of products with specific shapes.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A melting furnace for a casting iron pot mold, comprising a melting furnace main body (1), and linkage shafts (2) are fixedly installed on both sides of the melting furnace main body (1) respectively, characterized in that: A drive slider (3) with an elliptical structure is fixedly sleeved on the outer surface of the linkage shaft (2) on the right side. A connecting ear seat (6) is movably sleeved on the outer surface of the drive slider (3). Four groups of support balls (4) arranged linearly and symmetrically are provided on the outer surface of the drive slider (3). Two corresponding groups of support balls (4) are fixedly connected by a limit connecting frame (5). A friction drive connection is formed between the drive slider (3) and the connecting ear seat (6) through the support balls (4). A drive motor (7) is fixedly sleeved on the outside of the connecting ear seat (6) on the right side and forms a drive connection with the linkage shaft (2).

2. A melting furnace for a casting iron pot mold according to claim 1, characterized in that: A locking frame (8) is fixedly installed at the top of one side of the connecting ear seat (6) on the right side. A pressure spring (9) is movably sleeved inside the locking frame (8), and a drive connection is formed between the pressure spring (9) and a locking link (10) movably sleeved inside it. A magnetic pressure block (11) is fixedly sleeved on one side of the outer surface of the locking link (10) and inside the cavity of the locking frame (8). One end of the locking link (10) penetrates through the locking frame (8) and is engaged with the inside of one of the support balls (4). An electromagnetic coil (12) is provided inside the locking frame (8) at a position opposite to the magnetic pressure block (11).

3. A melting furnace for a casting iron pot mold according to claim 2, characterized in that: A conductive coil I (13) is fixedly sleeved on one side of the outer surface of the magnetic pressure block (11). A conductive coil II (14) is provided on one side inside the locking frame (8). At the same time, the conductive coil I (13), the conductive coil II (14), and the starting current on the drive motor (7) form a series circuit and form a parallel circuit with the electromagnetic coil (12).

4. A melting furnace for a casting iron pot mold according to claim 3, characterized in that: In the initial state, the center of gravity of the smelting furnace body (1) is below the central axis of the drive motor (7). Under the influence of gravity, the line connecting the two foci of the drive slider (3) with an elliptical structure on the linkage shaft (2) is horizontally arranged.

5. A melting furnace for a casting iron pot mold according to claim 4, characterized in that: A groove with an inner diameter equal to the outer diameter of the locking link (10) is provided inside the support ball (4) corresponding to the central axis of the locking frame (8). The distance between the conductive coil I (13) and the conductive coil II (14) is greater than the length of the locking link (10) extending into the groove of the support ball (4).

6. A melting method for a melting furnace used in a casting mold of a cast iron pot, characterized in that, It includes the following operation processes: S1. Put the raw materials and additives to be smelted into the smelting furnace body (1), and turn on the smelting furnace body (1) to perform high-temperature heating treatment on the raw materials and additives inside it to melt them into a liquid state; S2. Connect the control power supplies of the electromagnetic coil (12) and the drive motor (7) so that the electromagnetic coil (12) is first energized and triggered, generating a magnetic field opposite to the magnetism of the magnetic pressure block (11), forcing the magnetic pressure block (11) and the locking link (10) thereon to move outward to compress the pressure spring (9), causing one end of the locking link (10) to disengage from the groove in the support ball (4) at the corresponding position and unable to lock it; S3. During the continuous outward movement of the magnetic pressing block (11) and the locking connecting rod (10) thereon, the conductive coil I (13) thereon comes into contact with the conductive coil II (14) on the locking frame (8), thus closing the current circuit on the driving motor (7), causing it to rotate. The driving motor drives the linkage shaft (2), the transmission slider (3) and the supporting ball (4) thereon to rotate along the track on the inner wall of the connecting ear seat (6), and tilts the main body of the melting furnace (1) to a certain angle so that the molten metal liquid inside it is poured into the mold. S4. Disconnect the control power supply of the electromagnetic coil (12) and the driving motor (7) again. Under the influence of gravity, the main body of the melting furnace (1) returns to the vertical state, and the transmission slider (3) and the supporting ball (4) thereon return to the initial state. Under the elastic force of the compression spring (9), the locking connecting rod (10) is forced to move inward and extends into the groove of the supporting ball (4) at the corresponding position, locking it again. Then repeat the above steps to realize the casting operation of the product.

Images