On-line preheating device for round forging dies

Abstract

The utility model belongs to a kind of circular forging die on-line preheating device, including gas supply conveying component, combustion component, support adjusting component.Gas supply conveying component is connected two kinds of gas source and control on-off respectively by compressed air pipe, liquefied gas pipe, tee, right-angle elbow and three control valves.Burner component is disc-like heat-resistant pipe, and the pipe wall is uniformly distributed with air injection hole, for spraying flame even preheating die, support adjusting component includes support column and base, support column is installed on stable base, and the height and position of combustion component can be flexibly adjusted to adapt to different die cavity.The utility model not only can realize die fast on-line preheating, improve forging production efficiency and die life, but also be applicable to a variety of specifications of circular forging die, and base provides stable support and can be moved, after preheating, it can be conveniently removed and stored, quickly reset for next use, adapt to production line intermittent rhythm.

Description

Technical Field

[0001] This utility model belongs to the field of forging die preheating technology, specifically relating to an online preheating device for circular forging dies. Background Technology

[0002] In forging, die preheating is crucial for ensuring continuous production, extending die life, and guaranteeing forging quality. Especially in low temperatures during winter, if die preheating is inadequate, the high-temperature billet will cause thermal shock to the die, leading to cracking, chipping, and other problems, resulting in die scrap, increased replacement costs, and production interruption.

[0003] According to forging process standards, the preheating temperature of round forging dies must be strictly controlled between 250 and 400℃. Currently, the industry commonly uses the traditional preheating method, which involves piling heated scrap material on the die surface for baking. This method has significant drawbacks: firstly, heat is transferred through localized contact, resulting in large temperature differences within the die and overheating and softening in some areas, thus reducing die performance; secondly, heat penetration is weak, making it difficult to heat the die thoroughly, especially the upper die, which often fails to reach the preset temperature, affecting forging quality and creating safety hazards.

[0004] In the prior art, patent CN221890820U discloses a forging die preheating device, which, through the cooperation of a box, heating pipe, moving device and pushing device, realizes the convenient transfer of the preheated die to the processing step, thereby improving work efficiency to a certain extent.

[0005] However, existing preheating devices are only suitable for block-shaped integral molds and require offline preheating before installation. In actual production, circular forging molds often adopt an interlocking structure. If offline preheating is used, the mold temperature will be too high, causing burns to the hands and significantly increasing the installation difficulty. Therefore, online preheating after the mold is assembled on the press is more suitable. In addition, production is often interrupted for a long time due to reasons such as machine failure, lunch break, or shift change. After the mold temperature drops, it needs to be reheated. Existing technology often requires removing the mold from the press, preheating, and reinstalling it, which is cumbersome, time-consuming, and labor-intensive, further restricting production efficiency. Utility Model Content

[0006] This invention addresses the problem that existing preheating devices are difficult to apply to forging dies with interlocking structures for circular forgings and cannot achieve rapid and real-time preheating during production. It provides an online preheating device for circular forging dies that can achieve efficient, uniform, and convenient preheating of interlocking structures for circular forging dies on the production line.

[0007] The above-mentioned technical problem of this utility model is solved by the following technical solution: an online preheating device for a circular forging die, comprising a gas source delivery component, a combustion component, and a support adjustment component. The gas source delivery component includes a compressed air pipe and a liquefied gas pipe, both of which are connected to the combustion component. The compressed air pipe and the liquefied gas pipe are interconnected and used to deliver compressed air and combustible gas. The combustion component includes a heat-resistant pipe with a plurality of jet holes. The support adjustment component includes a support member, which is fixedly connected to the compressed air pipe.

[0008] Preferably, the gas supply assembly further includes a tee, a right-angle elbow, and several control valves for controlling the on / off state. The tee or right-angle elbow is connected to the combustion assembly. A tee is provided between the compressed air pipe and the liquefied gas pipe to connect the two. Control valves are provided at the initial end of the compressed air pipe and the end of the compressed air pipe near the heat-resistant pipe. A control valve is also provided at the initial end of the liquefied gas pipe. The control valve 5 is adaptable and adjustable, and can adjust the air intake of the corresponding pipe according to the mold preheating temperature requirement, thereby controlling the total amount and ratio of the mixed gas.

[0009] Preferably, the gas supply assembly includes a galvanized compressed air pipe and a galvanized liquefied gas pipe, both with an outer diameter of 20-22 mm and an inner diameter of 8-10 mm; when the outer diameter of the compressed air pipe and the liquefied gas pipe are both 22 mm and the inner diameter is both 10 mm, the ventilation effect is better.

[0010] Preferably, the heat-resistant tube is disc-shaped, with 8 to 10 jet holes evenly distributed on its circumferential wall, so that the flame is sprayed evenly. When the number of jet holes is 8, the preheating effect is optimal.

[0011] Preferably, the diameter of the heat-resistant tube is matched with the diameter of the upper cavity and the lower cavity of the circular forging mold, so as to accurately heat and preheat the mold cavity of the circular forging.

[0012] Preferably, the support adjustment assembly further includes a base, the lower end of the support member is threadedly connected to the base, and the top end of the support member is connected to the compressed air pipe. The base provides stable support for the entire device, ensuring that the preheating process proceeds stably.

[0013] Preferably, the position adjustment range of the support member covers the heating areas of the upper cavity and the lower cavity of the mold, ensuring that the flame can accurately cover the heating area of ​​the mold cavity.

[0014] In summary, compared with the prior art, this utility model has the following advantages: This utility model is not only suitable for online preheating of forging dies with inlaid structures for circular forgings, but also achieves uniform heating of the mold cavity and seams through disc-shaped heat-resistant pipes and evenly distributed air jet holes, avoiding forging defects and mold damage; it can also perform online real-time preheating of the mold on the production line without disassembly and transfer, saving disassembly and assembly time, and can precisely control the temperature according to the production rhythm, avoiding heat loss and ensuring that the mold is always in the best preheating state; the rectangular base of the device provides stable support and is movable, and can be easily moved and stored after preheating, and quickly reset for the next use, adapting to the intermittent rhythm of the production line, improving the convenience of use and scenario adaptability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram illustrating the use of this utility model; The numbers in the diagram are: 1. Compressed air pipe; 2. Liquefied gas pipe; 3. Tee; 4. Right angle elbow; 5. Control valve; 6. Heat-resistant pipe; 61. Jet nozzle; 7. Support component; 8. Base; 9. Upper cavity of mold; 10. Lower cavity of mold. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figures 1 to 3 The above describes an online preheating device for a circular forging die, which includes a gas supply assembly, a combustion assembly, and a support adjustment assembly.

[0018] The gas supply assembly includes a compressed air pipe 1, a liquefied gas pipe 2, a tee 3, a right-angle elbow 4, and several control valves 5 for controlling the on / off state. The gas supply assembly includes a galvanized compressed air pipe and a galvanized liquefied gas pipe. The inlet end of the compressed air pipe 1 is connected to a compressed air source, and its outlet end is connected to the combustion assembly via the tee 3. The inlet end of the liquefied gas pipe 2 is connected to a liquefied gas source or a piped gas source, and its outlet end is connected to the combustion assembly via the right-angle elbow 4 and the tee 3. The compressed air pipe 1 and the liquefied gas pipe 2 are interconnected. The outer diameter of both the compressed air pipe 1 and the liquefied gas pipe 2 is 22mm, and the inner diameter is 10mm. Control valves are provided at the initial end of the compressed air pipe and at the end of the compressed air pipe near the heat-resistant pipe. A control valve is also provided at the initial end of the liquefied gas pipe. These valves are used to precisely control the air intake according to the mold preheating temperature requirements, thereby adjusting the flame size.

[0019] The combustion component is a heat-resistant tube 6, which is disc-shaped and has eight jet holes 61 evenly distributed on its circumferential wall. The jet holes 61 are used to spray out the mixed compressed air and liquefied gas and ignite them. The flame is used to precisely heat and preheat the mold cavity of the circular forging. The diameter of the disc of the heat-resistant tube 6 is adapted to the diameter of the upper cavity 9 and the lower cavity 10 of the circular forging mold.

[0020] The support adjustment assembly includes a support member 7 and a base 8. The lower end of the support member 7 is threadedly connected to the base 8, and the top end of the support member 7 is connected to the compressed air pipe 1. The position adjustment range of the support member 7 covers the heating areas of the upper cavity 9 and the lower cavity 10 of the mold. The base 8 is used to support the entire preheating device.

[0021] The working process of this utility model: Compressed air and liquefied gas are introduced through compressed air pipe 1 and liquefied gas pipe 2, respectively. The liquefied gas first changes its delivery direction through a right-angle bend 4 and then merges with the compressed air at a tee 3 to form a mixed gas. The mixed gas is then delivered to a disc-shaped heat-resistant pipe 6. Control valves 5 are provided at the initial end of compressed air pipe 1 and the end near the heat-resistant pipe 6, and control valves 5 are also provided at the initial end of liquefied gas pipe 2. The control valves 5 can be adjusted to regulate the air intake of the corresponding pipe according to the mold preheating temperature requirements, thereby controlling the total amount and ratio of the mixed gas. The mixed gas is ejected from the jet holes 61 evenly opened on the circumferential wall of the heat-resistant pipe 6 and ignited to form a uniform flame beam, which precisely heats and preheats the mold cavity of the circular forging. The support 7 is threadedly connected to the base 8, and the two can be adjusted to adjust the horizontal height of the heat-resistant pipe 6 to ensure that the flame can accurately cover the heating area of ​​the mold cavity. The base 8 provides stable support for the entire device to ensure the stable operation of the preheating process.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An online preheating device for a circular forging die, comprising a gas source delivery assembly, a combustion assembly, and a support adjustment assembly, characterized in that, The gas supply assembly includes a compressed air pipe (1) and a liquefied gas pipe (2), both of which are connected to the combustion assembly and are interconnected. The combustion assembly includes a heat-resistant pipe (6) with several jet holes (61) on it. The support and adjustment assembly includes a support member (7) which is fixedly connected to the compressed air pipe (1).

2. The online preheating device for circular forging dies according to claim 1, characterized in that, The gas supply assembly also includes a tee (3), a right-angle elbow (4) and several control valves (5) for controlling the on / off state. The tee (3) or the right-angle elbow (4) is connected to the combustion assembly. A tee (3) is provided between the compressed air pipe (1) and the liquefied gas pipe (2) for connecting the two. Control valves (5) are provided at the initial end of the compressed air pipe (1) and at the end of the compressed air pipe (1) near the heat-resistant pipe (6). Control valves (5) are also provided at the initial end of the liquefied gas pipe (2).

3. The online preheating device for circular forging dies according to claim 1, characterized in that, The gas supply assembly includes a galvanized compressed air pipe (1) and a galvanized liquefied gas pipe (2), both with an outer diameter of 20-22 mm and an inner diameter of 8-10 mm.

4. The online preheating device for circular forging dies according to claim 1, characterized in that, The heat-resistant tube (6) is disc-shaped, and 8 to 10 jet holes (61) are evenly provided on its circumferential wall.

5. The online preheating device for circular forging dies according to claim 4, characterized in that, The diameter of the heat-resistant tube (6) is adapted to the diameter of the upper cavity (9) and lower cavity (10) of the circular forging mold.

6. The online preheating device for circular forging dies according to claim 1, characterized in that, The support adjustment assembly also includes a base (8), the lower end of the support member (7) is threaded to the base (8), and the top end of the support member (7) is connected to the compressed air pipe (1).

7. The online preheating device for circular forging dies according to claim 6, characterized in that, The position adjustment range of the support (7) covers the heating areas of the upper cavity (9) and lower cavity (10) of the mold.

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