Automatic alloy casting machine

Abstract

The utility model provides an automatic alloy casting machine. The automatic alloy casting machine comprises a conveying frame, a chain type conveying belt, a flow dividing frame and a flow dividing barrel. A preheating box is further arranged at the bottom end of the conveying frame, and a lower-layer conveying belt of the chain type conveying belt penetrates through the preheating box. The top and / or the bottom of the preheating box are / is provided with at least one flame nozzle used for baking a mold, and the flame nozzle communicates with an external fuel gas source. The air suction end of the air pump communicates with the preheating box, the exhaust end of the air pump extends to the position above the conveying frame through a waste heat guide pipe, and a plurality of first air spraying holes with openings facing the upper-layer conveying belt are formed in the outer wall of the pipe section located above the conveying frame. According to the casting machine, before casting, a mold is preheated through the fuel gas type preheating box arranged at the bottom of the conveying frame, when the mold is overturned to the upper side of the conveying frame along with the chain type conveying belt, the waste heat guide pipe sucks hot air in the preheating box through the air pump and sprays the hot air to the mold, and secondary preheating of the mold is achieved; therefore, it is effectively guaranteed that the mold is kept at the proper temperature when reaching the casting position.

Description

TECHNICAL FIELD

[0001] The utility model relates to alloy ingot production technical field, concretely relates to an alloy automatic casting machine. BACKGROUND

[0002] The current alloy ingot casting process is generally to pour the molten alloy liquid in the mold, multiple molds form a closed loop circulation rotation on the chain type conveying frame, the mold is cooled and formed into an alloy ingot during the conveying process. Before the mold starts to receive the alloy liquid, the mold is generally preheated first to avoid the molten high-temperature alloy liquid directly contacting the cold mold, which will cause a cold film layer and pinhole bubbles on the surface of the alloy ingot during the pouring and heating process, affecting the product quality and appearance.

[0003] To maximize the use of space, the mold preheating device is generally arranged on the side of the lower conveying chain of the chain type conveying frame, such as the mold baking equipment disclosed in the utility model patent with publication number CN214349467U. Since the alloy liquid distribution cylinder (casting cylinder) is usually arranged above the front end of the chain type conveying frame, the casting process is completed on the upper conveying chain, and the mold baking process is completed on the lower conveying chain. The preheated mold needs to be transferred for a certain distance after passing through the connection place (i.e. the rotating position of the chain type conveying belt) of the upper and lower conveying chains before it can receive casting. Affected by the external environment temperature, the preheated mold inevitably loses temperature to different degrees, so it is difficult to control the temperature of the mold when it reaches the alloy liquid casting position, resulting in poor preheating effect. SUMMARY

[0004] In view of the above problems in the prior art, the utility model provides an alloy automatic casting machine, which solves the problem of poor preheating effect of the existing mold preheating device due to the spatial position relationship between the preheating device and the casting device.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An alloy automatic casting machine comprises a conveying frame and a distribution cylinder, the conveying frame is provided with a chain type conveying belt capable of rotating and circulating, a plurality of molds with cavities are installed on the chain type conveying belt, and a distribution frame for installing the distribution cylinder is arranged on the top surface of the front end of the conveying frame, so that the distribution cylinder can inject molten alloy liquid into the cavities of the molds.

[0007] The bottom end of the conveying frame is further provided with a preheating box, and the lower conveyor belt of the chain conveyor passes through the preheating box; the top and / or bottom of the preheating box is provided with at least one fire nozzle for baking the mold, and the fire nozzle is communicated with an external gas source; the casting machine further comprises an air pump, the air suction end of the air pump is communicated with the preheating box, the air exhaust end of the air pump extends to above the conveying frame through a waste heat pipe, and a plurality of first air injection holes are formed in the outer wall of the pipe section above the conveying frame and face the upper conveyor belt.

[0008] Optionally, the waste heat pipe comprises a heat exhaust pipe section horizontally arranged above the conveying frame, and a heat supply pipe section communicated with the air injection pipe section and the air pump, respectively; the first air injection hole is arranged on the outer wall of the heat exhaust pipe section.

[0009] Optionally, the heat insulation cover is arranged on the side of the flow distribution frame facing the heat exhaust pipe section, and the heat exhaust pipe section is accommodated in the heat insulation cover.

[0010] Optionally, the heat insulation cover comprises a chute plate extending obliquely towards the conveying frame, and side plates arranged on both sides of the chute plate.

[0011] Optionally, the outer wall of the heat exhaust pipe section is further provided with a plurality of second air injection holes opening towards the chute plate.

[0012] Optionally, the outer wall of the heat exhaust pipe section is further provided with a movable shutter for closing or opening the second air injection hole.

[0013] Optionally, the bottom surface of the chute plate is further provided with a heat reflecting layer.

[0014] Optionally, the preheating box comprises an upper box body and a lower box body spliced with each other.

[0015] The beneficial effects of the utility model include:

[0016] The utility model provides a kind of alloy automatic casting machine, including conveying frame, chain conveyer, shunt frame and shunt cylinder;The bottom end of conveying frame is also equipped with preheating box, and the lower conveyer of chain conveyer is through preheating box;The top and / or bottom of preheating box is equipped with at least one for baking mould's flame nozzle, and the flame nozzle is communicated with external gas source;The air pump is further included in the casting machine, and the air suction end of air pump is communicated with preheating box, and the air exhaust end of air pump is extended to the upper side of conveying frame by waste heat pipe, and the outer wall of pipe section located in the upper side of conveying frame is equipped with multiple openings first air jet hole towards upper conveyer.This automatic casting machine, mould is preheated and handled by gas type preheating box arranged in the bottom of conveying frame before casting, when mould is turned over to the upper side of conveying frame with chain conveyer, waste heat pipe is pumped into hot air in preheating box by air pump and sprayed to mould, to heat the mould losing temperature in conveying process, realize the secondary preheating of mould, to effectively ensure that mould maintains more appropriate temperature when reaching casting position. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a kind of alloy automatic casting machine's three-dimensional structure schematic diagram;

[0018] Figure 2 It is the structure schematic diagram of casting machine front end casting area described in the application;

[0019] Figure 3 It is Figure 2 Sectional view of

[0020] Figure 4 It is the explosion diagram of preheating box;

[0021] Figure 5 It is the structure schematic diagram of heat shield;

[0022] Figure 6 It is the schematic diagram when first air jet hole is used alone;

[0023] Figure 7 It is the working schematic diagram of first air jet hole and second air jet hole simultaneously;

[0024] Reference signs:

[0025] 1-conveying frame, 2-chain conveyer, 3-shunt frame, 4-shunt cylinder, 5-preheating box, 6-waste heat pipe, 7-heat shield;

[0026] 21-mould, 51-flame nozzle, 52-upper box body, 53-lower box body, 61-air pump, 71-plate, 72-side plate. DETAILED DESCRIPTION

[0027] The utility model will be further explained in detail in combination with specific embodiment and drawing.

[0028] The traditional casting machine at least comprises a conveying frame 1 and a distribution cylinder 4, the chain conveyor 2 capable of rotating and circulating is arranged on the conveying frame 1, and a plurality of molds 21 with cavities are arranged on the chain conveyor 2, and a distribution frame 3 for mounting the distribution cylinder 4 is arranged on the top surface of the front end of the conveying frame 1, so that the distribution cylinder 4 can inject molten alloy into the cavities of the molds 21. For the specific structure, please refer to CN117718448B.

[0029] The present application makes technical improvements on the above-mentioned casting machine, and the specific improvements are as follows: Figures 1-3 The bottom end of the conveying frame 1 is further provided with a gas-fired preheating box 5, and the lower conveyor of the chain conveyor 2 penetrates the preheating box 5; at least one flame nozzle 51 for baking the mold 21 is arranged on the top and / or bottom of the preheating box 5, and the flame nozzle 51 is in communication with an external gas source (such as a liquefied gas tank, a natural gas pipe, etc.); the casting machine further comprises an air pump 61, the suction end of the air pump 61 is in communication with the preheating box 5, the exhaust end of the air pump 61 extends to above the conveying frame 1 through a waste heat conduit 6, and a plurality of first air injection holes (not shown in the figure) are arranged on the outer wall of the pipe section above the conveying frame 1 and open towards the upper conveyor. Specifically, the waste heat conduit 6 comprises a heat exhaust pipe section horizontally arranged above the conveying frame 1, and a heat supply pipe section in communication with the air injection pipe section and the air pump 61, respectively, the first air injection holes are arranged on the outer wall of the heat exhaust pipe section, and a plurality of first air injection holes are arranged at intervals along the extension direction of the heat exhaust pipe section. In particular, for easy installation, please refer to Figure 4 The preheating box 5 is designed as an upper box body 52 and a lower box body 53 that can be spliced with each other, and the side walls of the upper and lower box bodies 53 are fixedly connected with the conveying frame 1.

[0030] Before casting, the mold 21 is first preheated by the gas-fired preheating box 5 arranged at the bottom of the conveying frame 1, when the mold 21 is turned over to the upper side of the conveying frame 1 with the chain conveyor 2, the waste heat conduit 6 sucks and sprays the hot air in the preheating box 5 to the mold 21 by means of the air pump 61, so as to heat the mold 21 which loses heat during conveying, and realize the secondary preheating of the mold 21. Obviously, the preheating box 5 is also provided with function modules such as automatic ignition, automatic flame detection, automatic alarm for abnormal flameout, and alarm for gas interruption.

[0031] As a further improvement on the above-mentioned scheme, please refer to Figure 3 and 5The heat insulation cover 7 is installed on the diversion frame 3 and covers the conveying frame 1 from above, and the heat exhausting pipe section is accommodated in the heat insulation cover 7. The heat insulation cover 7 prevents the heat contained in the hot air sucked from the preheating box 5 from dissipating in the external environment too fast and too much. Obviously, a heat insulation plate (not shown in the figure) can also be arranged at a position corresponding to the heat insulation cover 7 below the upper conveying belt, that is, the heat insulation cover 7 and the heat insulation plate are arranged on the upper conveying belt in a top-bottom manner, and the two form a relatively closed heat insulation box.

[0032] As a further improvement of the above-mentioned scheme, please refer to Figure 5 The heat insulation cover 7 at least comprises a chute plate 71 extending obliquely towards the conveying frame 1, and side plates 72 arranged on both sides of the chute plate 71. Since the heat insulation cover 7 is installed on the diversion frame 3, and the diversion frame 3 is located in the casting area, the molten alloy liquid will emit a large amount of heat during casting. Therefore, the side of the heat insulation cover 7 facing the diversion frame 3 can not be closed, and the heat dissipated in the casting area can also enter the heat insulation cover 7 to assist preheating.

[0033] As a further improvement of the above-mentioned scheme, since the mold 21 is conveyed at a constant speed, the first air injection hole has a limited heating time. When the temperature difference between the ambient temperature and the mold 21 after initial preheating is large, the mold 21 loses more heat, and only relying on the first air injection hole for heating alone is not ideal. Therefore, please refer to Figures 6-7 The outer wall of the heat exhausting pipe section is also provided with a plurality of second air injection holes opening towards the chute plate 71, and the bottom surface of the chute plate 71 is also provided with a heat reflecting layer. The hot air is sprayed towards the chute plate 71 through the second air injection holes and is guided and reflected downwards to the mold 21 by the chute plate 71, thereby prolonging the heating time and effectively ensuring that the mold 21 maintains a relatively appropriate temperature when reaching the casting position. Preferably, the outer wall of the heat exhausting pipe section is also provided with movable shutters for closing or opening the second air injection holes, so as to facilitate the operator to determine whether to open the second air injection holes according to the ambient temperature.

[0034] The above-mentioned technical scheme provided by the embodiments of the present application is described in detail. The principles and implementation modes of the embodiments of the present application are described by applying specific examples. The above-mentioned embodiment descriptions are only applicable to help understand the principles of the embodiments of the present application. Meanwhile, for those skilled in the art, the embodiments of the present application will have changes in specific implementation modes and application ranges. In conclusion, the content of the present description should not be understood as a limitation of the present application.

Claims

1. An automatic alloy casting machine, comprising a conveyor frame (1) and a diverter cylinder (4), wherein a chain conveyor belt (2) capable of rotatable and cyclical motion is mounted on the conveyor frame (1), and a plurality of molds (21) with concave cavities are further mounted on the chain conveyor belt (2), and a diverter frame (3) for mounting the diverter cylinder (4) is provided on the top surface of the front end of the conveyor frame (1), so that the diverter cylinder (4) can inject molten alloy liquid into the concave cavity of the mold (21); characterized in that The bottom end of the conveyor frame (1) is also provided with a preheating box (5), and the lower conveyor belt of the chain conveyor (2) passes through the preheating box (5); the top and / or bottom of the preheating box (5) are provided with at least one flame nozzle (51) for baking the mold (21), and the flame nozzle (51) is connected to an external fuel gas source; the casting machine also includes an air pump (61), the air intake end of the air pump (61) is connected to the preheating box (5), and the exhaust end of the air pump (61) extends to the top of the conveyor frame (1) through the waste heat pipe (6), and the outer wall of the pipe section located above the conveyor frame (1) is provided with a plurality of first jet holes opening toward the upper conveyor belt.

2. The automatic alloy casting machine according to claim 1, characterized in that: The waste heat conduit (6) comprises a heat exhaust pipe section placed horizontally above the conveying rack (1), and a heat delivery pipe section respectively connected to the air injection pipe section and the air pump (61), and the first air injection hole is arranged on the outer wall of the heat exhaust pipe section.

3. The automatic alloy casting machine according to claim 2, characterized in that: A heat insulation cover (7) with an opening facing downward and arranged above the conveying frame (1) is installed on the side of the diversion frame (3) facing the heat exhaust pipe section, and the heat exhaust pipe section is accommodated in the heat insulation cover (7).

4. The automatic alloy casting machine according to claim 3, characterized in that: The heat shield (7) at least comprises a slide (71) extending obliquely toward the conveying frame (1), and side plates (72) arranged on both sides of the slide (71).

5. The automatic alloy casting machine according to claim 4, characterized in that: The outer wall of the heat exhaust pipe section is also provided with a plurality of second air injection holes opening toward the slide plate (71).

6. The automatic alloy casting machine according to claim 5, characterized in that: The outer wall of the heat exhaust pipe section is further provided with a movable shutter for closing or opening the second air injection hole.

7. The automatic alloy casting machine according to claim 5, characterized in that: The bottom surface of the slide plate (71) is also provided with a heat reflection layer.

8. An automatic alloy casting machine according to any one of claims 1 to 7, characterized in that: The preheating box (5) comprises an upper box body (52) and a lower box body (53) which are spliced ​​together.

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