Multi-stream metal casting production line and production process

Abstract

The invention provides a multi-stream metal casting production line. The multi-stream metal casting production line comprises a main melting furnace body, an extraction device, a transfer device, a guide-in device and a casting furnace body; the extraction device comprises a lifting rod and an extraction barrel, a liquid level height sensor is installed on the extraction barrel, and a heat preservation assembly is arranged on the outer wall of the extraction barrel; a first lifting mechanism is installed on the lifting rod, a material passing opening is formed in the bottom of the extraction barrel, and a plugging head is arranged corresponding to the material passing opening and driven by a second lifting mechanism; the transferring device comprises a support, a sliding rail is installed on the support, the extracting device is installed on the sliding rail in a sliding mode, and a pushing mechanism is arranged on the sliding rail. The guiding-in device comprises a material guiding groove, a liquid guiding nozzle is arranged at the bottom of the material guiding groove, and the lower end of the liquid guiding nozzle extends into the casting furnace body. The main melting furnace body is used for melting metal in a concentrated mode, the requirement that each furnace body needs molten metal melting and heat preservation in the past is effectively reduced, and due to the totally-closed furnace body design, heat loss is reduced, and pollution emission is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of metal casting, and in particular relates to a multi-stream metal casting production line and a production process. Background Art

[0002] Traditional metal casting processes, especially solid-liquid bimetallic composite casting, generally use cored power frequency induction heating furnaces to melt metal. However, this method has the problems of high energy consumption, low heating efficiency and potential safety hazards. The existing technology mainly uses electromagnetic induction to melt the metal at the bottom of the furnace body first, and then gradually melts the metal above, but this method is prone to burning out the melting groove, the furnace body is bulky, energy consumption is high, and efficiency is low. In addition, a single furnace body is equipped with a single power frequency induction device, and the furnace cavity design is large, resulting in a large amount of energy consumption for metal liquid insulation, resulting in energy waste. Therefore, it is necessary to improve the existing metal casting process. Summary of the invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a multi-stream metal casting production line and a production process.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] A multi-stream metal casting production line comprises a main melting furnace body, an extraction device, a transfer device, an introduction device and casting furnace bodies arranged on both sides of the main melting furnace body; the extraction device comprises a lifting rod and an extraction cylinder, a liquid level sensor is installed on the extraction cylinder, and an insulation component is provided on the outer wall of the extraction cylinder; a first lifting mechanism is installed on the lifting rod, a material passing port is provided at the bottom of the extraction cylinder, a sealing head is provided corresponding to the material passing port, and the sealing head is driven by a second lifting mechanism to achieve height position adjustment; the transfer device comprises a bracket, a slide rail is installed on the bracket, the extraction device is slidably installed on the slide rail, and a propulsion mechanism for driving the first lifting mechanism to move is provided on the slide rail or the lifting device; the introduction device comprises a material guide trough installed on both sides of the extraction device, a liquid guide nozzle is provided at the bottom of the material guide trough corresponding to each casting furnace body, the upper end of the material guide nozzle is communicated with the material guide trough, and the lower end extends to the casting furnace body.

[0006] Furthermore, the first lifting mechanism is slidably mounted on a slide rail.

[0007] Furthermore, the first lifting mechanism includes an electric push rod or a hydraulic push rod.

[0008] Furthermore, the second lifting mechanism includes an electric push rod or a hydraulic push rod.

[0009] Furthermore, the thermal insulation component includes a high-frequency heating induction coil or an infrared thermal sensor.

[0010] Furthermore, the cross section of the material guide trough is U-shaped.

[0011] Furthermore, each casting furnace body is provided with an immersion heating device.

[0012] A metal casting production process using the above multi-stream metal casting production line comprises the following steps:

[0013] A row of casting furnace bodies are arranged on both sides of the main melting furnace body;

[0014] The main melting furnace is used to centrally melt the metal materials to be poured into liquid form;

[0015] The extraction device is moved to the top of the main melting furnace by using the propulsion mechanism, and then the molten metal is extracted from the main melting furnace by using the extraction device;

[0016] The extraction device is moved to above the casting furnace body by using the propulsion mechanism;

[0017] The extraction cylinder is lowered by the first lifting mechanism so that the feeding port at the lower end of the extraction cylinder is aligned with the material guide nozzle above the casting furnace body, and then the sealing head is moved upward by the second lifting mechanism so that the molten metal in the extraction cylinder flows along the feeding port to the material guide nozzle, and then the molten metal is poured into the casting furnace body;

[0018] Repeat the above steps to complete the pouring of all casting furnace bodies.

[0019] Furthermore, the casting furnace bodies on both sides of the main melting furnace body are arranged at intervals along the length direction of the slide rail.

[0020] Furthermore, the method for extracting molten metal is: firstly lowering the extraction cylinder through the first lifting mechanism so that the extraction cylinder is immersed below the liquid surface of the main melting furnace body, and then moving the plugging head downward through the second lifting mechanism so that the plugging head blocks the feeding port on the extraction cylinder, and finally lifting the extraction cylinder upward through the first lifting mechanism.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The invention has a reasonable structural design. The first lifting mechanism can realize the lifting and lowering of the extraction cylinder, and the second lifting mechanism can realize the height adjustment of the plugging head. In the process of quantitative extraction of metal liquid, the extraction cylinder can be used to accurately measure the metal liquid, and the extraction device can be driven to move to the top of the casting furnace body through the propulsion mechanism to realize the feeding. This production line uses the main melting furnace body to concentrate on metal melting, which effectively reduces the previous requirements for each furnace body to melt and keep the metal liquid warm, reduces the equipment investment of the enterprise, and greatly improves the energy utilization rate of the equipment. In addition, the entire production line adopts a fully enclosed furnace body design, which reduces heat loss and reduces pollution emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0024] Figure 1 A schematic diagram of the structure created by the present invention;

[0025] Figure 2 A left view created for the present invention;

[0026] Figure 3 It is a schematic diagram of the propulsion mechanism part in the invention;

[0027] Figure 4 for Figure 1 A schematic diagram of the extraction device portion;

[0028] Figure 5 for Figure 4 Sectional view in the AA direction;

[0029] Figure 6 A schematic diagram of the three-dimensional structure created by the present invention;

[0030] Figure 7 A schematic diagram of the extraction device in the present invention;

[0031] Figure 8 for Figure 7 Cross-sectional view in the BB direction;

[0032] Fig. 9 It is a schematic diagram of the three-dimensional structure of the extraction device in the invention. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] A multi-stream metal casting production line, such as Figures 1 to 9 As shown, it includes a main melting furnace body 1, an extraction device 2, a transfer device 4, an introduction device 5, and a casting furnace body 6 arranged on both sides of the main melting furnace body. The casting furnace bodies are arranged in a line on both sides of the main melting furnace body; the extraction device includes a lifting rod 7 and an extraction cylinder 8. The upper end of the extraction cylinder is open, and a liquid level sensor is installed on the extraction cylinder. The outer wall of the extraction cylinder is provided with a heat preservation component; the liquid level sensor senses the height of the liquid in the barrel in real time and accurately calculates the volume of the liquid through a computer PLC. A first lifting mechanism 9 is installed on the lifting rod, and a feeding port 10 is provided at the bottom of the extraction cylinder. A plugging head 11 is provided corresponding to the feeding port. The plugging head is driven by a second lifting mechanism 12 to achieve its height position adjustment.

[0038] When the set extraction liquid capacity is reached, the PLC will control the plugging head to plug the bottom feed port to ensure that the amount of liquid extracted each time is accurately controllable. The feed port is eccentrically arranged on the bottom plate of the extraction cylinder, and the feed port is provided with an expansion portion 3 extending downward, which increases the length of the feed port, which is conducive to the feed port aligning with the liquid guide nozzle to achieve accurate unloading.

[0039] The transfer device includes a bracket 14, on which a slide rail 15 is installed, and the extraction device is slidably installed on the slide rail. A propulsion mechanism 16 for driving the first lifting mechanism to move is provided on the slide rail or the lifting device. A limit structure can be provided at both ends of the slide rail to prevent the propulsion mechanism from driving the extraction device to move too far. The introduction device includes a guide groove 17 installed on both sides of the corresponding extraction device, and a liquid guide nozzle 18 is provided at the bottom of the guide groove corresponding to each casting furnace body. The upper end of the liquid guide nozzle is connected to the guide groove, and the lower end extends to the casting furnace body. As an example, the cross-section of the guide groove is U-shaped, the guide groove is made of stainless steel, and the inner wall is protected by heat-insulating refractory mud. The guide groove is arranged below the extraction cylinder, and the lower part of the extraction cylinder is in the guide groove. Usually, more than 1 / 4 of the height of the extraction cylinder is immersed in the guide groove, so that the extraction cylinder can always be guaranteed to operate in the safe channel formed by the guide groove. Even if the metal liquid leaks, the metal liquid will only remain in the U-shaped guide groove and will not leak to the outside, reducing the operation risk.

[0040] As an example, the propulsion mechanism includes a driving motor 20 arranged on the lifting rod, a driving seat 19 is arranged on the lifting rod corresponding to the slide rail, and the driving motor is installed on the driving seat. The driving motor drives the roller 21 in the driving seat to rotate along the material guide trough, thereby moving the extraction device along the material guide trough. Of course, those skilled in the art can also design the propulsion mechanism by other conventional technical means, as long as the propulsion mechanism can drive the lifting device to move along the material guide trough.

[0041] In the invention, the lifting mechanism adopts a screw type or an electric push (pull) method to achieve the pressing and extraction action. As an example, the first lifting mechanism is slidably installed on the slide rail. The first lifting mechanism includes an electric push rod or a hydraulic push rod. The second lifting mechanism includes an electric push rod or a hydraulic push rod. It should be pointed out that the first lifting mechanism and the second lifting mechanism are both electrically connected to the PLC, and receive PLC instructions to extend or retract respectively. The PLC control method is adopted to improve the degree of automation and production efficiency. In addition, the PLC sets the depth of the extraction cylinder immersed in the zinc liquid to determine the quantitative extraction each time. The metal liquid enters the barrel through the feeding port at the bottom of the extraction cylinder. After reaching the required amount, the second lifting mechanism drives the sealing head to close the feeding port, and then the extraction device lifts the extraction cylinder upward to complete the liquid extraction.

[0042] Usually, the lifting rod is welded to the connecting claw, and the connecting claw is welded to the extraction cylinder. In an optional embodiment, the connecting claw includes a base frame 13, and a plurality of claw bodies 23 are provided at the lower part of the base frame, and each claw body is welded to the outer wall of the extraction cylinder. The lifting rod is arranged at the center of the base frame, and the second lifting mechanism and the plugging head are eccentrically arranged and misaligned with the lifting rod to avoid interference between the structural parts.

[0043] The heat preservation assembly includes a high-frequency heating induction coil or an infrared heat sensor, which can heat and keep the metal liquid and the extraction barrel in real time, ensuring that the temperature of the metal liquid is always kept within the required range during the extraction and transportation process. Usually, the lifting rod is welded and fixed to the connecting claw, and the connecting claw is welded and fixed to the extraction barrel.

[0044] The main melting furnace adopts a coreless induction furnace to achieve centralized melting of metal. The coreless induction furnace has the characteristics of high induction thermal efficiency and safety and environmental protection. In the normal operation of the main melting furnace, the metal liquid inlet and outlet adopts an automatic closing design, which can achieve the purpose of heat preservation and reduce pollution emissions. For example, there is an infrared sensor and a pneumatic slider at the opening of the furnace. When the metal extraction barrel or zinc block is approached, the pneumatic slider slides and opens the furnace cover horizontally. When the zinc extraction or zinc addition is completed, the pneumatic slider automatically closes the furnace opening.

[0045] The casting furnace body consists of an inner core, an intermediate layer and an outer shell. The inner core is cast from a heat-resistant conductive material, the intermediate layer is a ceramic fiber heat-resistant conductive material layer coated on the outside of the inner core, and the outer shell is a steel shell on the outside of the intermediate layer. An immersion heating device is provided in the furnace body to achieve heat preservation and heating of the metal liquid. For example, the immersion heating device includes an electric heating rod. The use of immersion heating can achieve high heating efficiency. At the same time, the casting furnace body is fully enclosed, which can effectively reduce heat loss and pollution emissions above the furnace mouth, achieving the purpose of high efficiency and environmental protection.

[0046] When the above multi-stream metal casting production line is used for casting production, the first lifting mechanism can realize the lifting and lowering of the extraction cylinder, and the second lifting mechanism can realize the height adjustment of the plugging head, thereby realizing the plugging or opening of the feed port. In the process of quantitative extraction of metal liquid, the extraction cylinder can be used to accurately measure the metal liquid. The insulation component set on the extraction cylinder can heat and insulate the metal liquid and the extraction barrel in real time, ensuring that the temperature of the metal liquid is always kept within the required range during the extraction and transportation process. A process step of using the above multi-stream metal casting production line for casting production is as follows:

[0047] S1. A row of casting furnace bodies are arranged on both sides of the main melting furnace body. Usually, the casting furnace bodies on both sides of the main melting furnace body are arranged at intervals along the length direction of the slide rail.

[0048] S2, using the main melting furnace to centrally melt the metal material to be cast into liquid;

[0049] S3, controlling the propulsion mechanism through PLC to move the extraction device to the top of the main melting furnace, and then using the extraction device to extract the molten metal in the main melting furnace; the method for extracting the molten metal is: firstly lowering the extraction cylinder through the first lifting mechanism so that the extraction cylinder is immersed below the liquid surface of the main melting furnace body, and when the molten metal entering the extraction cylinder reaches the required capacity, the plugging head is moved down through the second lifting mechanism so that the plugging head blocks the material passing port on the extraction cylinder, and finally the extraction cylinder is lifted up through the first lifting mechanism;

[0050] S4. The extraction device is moved to the top of the casting furnace body by controlling the propulsion mechanism through PLC; the propulsion mechanism is positioned by a position sensor installed above the casting furnace body to ensure that the extraction device can accurately hover above the casting furnace body;

[0051] S5, control the first lifting mechanism through PLC to lower the extraction cylinder, so that the feeding port at the lower end of the extraction cylinder is aligned with the liquid guide nozzle above the casting furnace body, and then control the second lifting mechanism through PLC to move the plugging head upward, so that the molten metal in the extraction cylinder flows along the feeding port to the liquid guide nozzle, and then the molten metal is poured into the casting furnace body;

[0052] S6. Repeat the above steps to complete the pouring of all casting furnace bodies.

[0053] The invention has a reasonable structural design. The first lifting mechanism can realize the lifting and lowering of the extraction tube, and the second lifting mechanism can realize the height adjustment of the plugging head. In the process of quantitative extraction of metal liquid, the extraction tube can be used to realize accurate measurement of the metal liquid, and the extraction device can be driven to move to the top of the casting furnace body through the propulsion mechanism to realize feeding. This production line adopts the main melting furnace body to centrally melt the metal, which effectively reduces the previous requirements for each furnace body to melt and keep the metal liquid warm, reduces the equipment investment of the enterprise, and greatly improves the energy utilization rate of the equipment. In addition, the entire production line adopts a fully enclosed furnace body design, which reduces heat loss and reduces pollution emissions. In the PLC control scheme, automated metal liquid extraction, transportation, and feeding are realized, with a high degree of automation, which effectively reduces the demand for manpower and starts to reduce costs and increase efficiency for operating enterprises.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stream metal casting production line, characterized in that: It includes a main melting furnace body, an extraction device, a transfer device, an introduction device and a casting furnace body arranged on both sides of the main melting furnace body; the extraction device includes a lifting rod and an extraction cylinder, a liquid level sensor is installed on the extraction cylinder, and an insulation component is provided on the outer wall of the extraction cylinder; a first lifting mechanism is installed on the lifting rod, a material passing port is provided at the bottom of the extraction cylinder, a sealing head is provided corresponding to the material passing port, and the sealing head is driven by a second lifting mechanism to achieve its height position adjustment; the transfer device includes a bracket, a slide rail is installed on the bracket, the extraction device is slidably installed on the slide rail, and a propulsion mechanism for driving the first lifting mechanism to move is provided on the slide rail or the lifting device; the introduction device includes a material guide trough installed on both sides of the extraction device, a liquid guide nozzle is provided at the bottom of the material guide trough corresponding to each casting furnace body, the upper end of the material guide nozzle is communicated with the material guide trough, and the lower end extends to the casting furnace body.

2. A multi-strand metal casting production line according to claim 1, characterized in that: The first lifting mechanism is slidably mounted on the slide rail.

3. A multi-strand metal casting production line according to claim 1, characterized in that: The first lifting mechanism includes an electric push rod or a hydraulic push rod.

4. A multi-stream metal casting production line according to claim 1, characterized in that: The second lifting mechanism includes an electric push rod or a hydraulic push rod.

5. A multi-strand metal casting production line according to claim 1, characterized in that: The heat preservation component includes a high-frequency heating induction coil or an infrared heat sensor.

6. A multi-strand metal casting production line according to claim 1, characterized in that: The cross section of the material guide trough is U-shaped.

7. A multi-strand metal casting production line according to claim 1, characterized in that: Each casting furnace body is provided with an immersion heating device.

8. A metal casting production process using the multi-strand metal casting production line according to any one of claims 1 to 7, characterized in that: The steps include: A row of casting furnace bodies are arranged on both sides of the main melting furnace body; The main melting furnace is used to centrally melt the metal materials to be poured into liquid form; The extraction device is moved to the top of the main melting furnace by using the propulsion mechanism, and then the molten metal is extracted from the main melting furnace by using the extraction device; The extraction device is moved to above the casting furnace body by using the propulsion mechanism; The extraction cylinder is lowered by the first lifting mechanism so that the feeding port at the lower end of the extraction cylinder is aligned with the material guide nozzle above the casting furnace body, and then the sealing head is moved upward by the second lifting mechanism so that the molten metal in the extraction cylinder flows along the feeding port to the material guide nozzle, and then the molten metal is poured into the casting furnace body; Repeat the above steps to complete the pouring of all casting furnace bodies.

9. A metal casting production process according to claim 8, characterized in that: The casting furnace bodies on both sides of the main melting furnace body are arranged at intervals along the length direction of the slide rail.

10. A metal casting production process according to claim 8, characterized in that: The method for extracting molten metal is as follows: firstly, the extraction cylinder is lowered by the first lifting mechanism so that the extraction cylinder is immersed below the liquid level of the main melting furnace body, and then the plugging head is moved down by the second lifting mechanism so that the plugging head blocks the feeding port on the extraction cylinder, and finally, the extraction cylinder is lifted up by the first lifting mechanism.

Images