A forge heating furnace with an adjustable hearth

Abstract

The utility model provides a kind of adjustable furnace cavity of forging heating furnace, it is related to heating furnace technical field, including ultrasonic welding head body, including heating furnace body, the outer wall side of heating furnace body is fixedly installed with lift door assembly, the inner surface wall of heating furnace body is fixedly connected with four guide rods, four guide rods are movably sleeved with upper high-temperature heat insulation plate between outer surface wall, and the top of upper high-temperature heat insulation plate is fixedly connected with upper insulating layer.In the utility model, under the interaction of each component of the device, the volume of the forging heating furnace cavity can be adjusted flexibly, which precisely fits the blank shape specification, significantly enhances the temperature uniformity of the heating process, effectively reduces the invalid diffusion loss of heat, and thus greatly improves the heating efficiency and reduces energy consumption, providing reliable support for ensuring the forging heating quality and subsequent forging process stability.

Description

Technical Field

[0001] This utility model relates to the field of heating furnace technology, and in particular to an adjustable furnace cavity for a forging heating furnace. Background Technology

[0002] Forging heating furnaces are key equipment in the forging process. They heat metal billets to a suitable forging temperature through electric heating, fuel combustion, or other methods, providing the necessary hot microstructure and plasticity conditions for subsequent forging processing.

[0003] During the forging process, the billet needs to be sent into the furnace cavity, and then heated to the appropriate forging temperature by means of electric heating, gas combustion, or other heating methods with a reasonable heating rate and temperature curve, so as to ensure that the metal has good plasticity and meets the requirements of subsequent forging processes.

[0004] However, the existing forging heating furnace cavity has the following shortcomings:

[0005] Existing forging heating furnaces mostly adopt fixed-size furnace cavity structures, which are difficult to adapt to the diverse billet requirements. When the billet size is small, the excessively large furnace cavity space can easily cause heat diffusion, resulting in slow heating rate and reduced energy utilization. When facing large forgings, the limited furnace cavity volume not only restricts their complete clamping, but also causes uneven temperature field distribution, which in turn affects the microstructure and forming quality of the forgings.

[0006] Therefore, we propose an adjustable furnace cavity for forging heating furnace to solve the problems mentioned above. Utility Model Content

[0007] The purpose of this invention is to provide an adjustable furnace cavity for a forging heating furnace. By using a hydraulic cylinder to drive and combining it with the guiding and positioning function of a guide assembly, the upper high-temperature insulation plate can be moved smoothly upward in the vertical direction, releasing its contact constraint with the bottom of the inner wall of the heating furnace. Subsequently, through the transmission mechanism of the motor drive and the threaded assembly, the two side insulation plates can be moved horizontally synchronously, thereby solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable furnace cavity for a forging heating furnace, comprising a heating furnace body, a lifting door assembly fixedly installed on one side of the outer wall of the heating furnace body, four guide rods fixedly connected to the inner surface wall of the heating furnace body, an upper high-temperature heat insulation plate movably sleeved between the outer surfaces of the four guide rods, an upper heat insulation layer fixedly connected to the top of the upper high-temperature heat insulation plate, two sets of first sliding grooves opened at the bottom of the upper high-temperature heat insulation plate, a first slider slidably embedded in the inner surface wall of each of the two sets of first sliding grooves, and a side high-temperature heat insulation plate fixedly connected between the bottoms of the two sets of first sliders.

[0009] Preferably, a side insulation layer is fixedly connected to one side of the outer wall of each of the two side high-temperature insulation boards, and a second sliding groove is provided at the bottom of the upper high-temperature insulation board. Two second sliders are slidably embedded in the inner surface of the second sliding groove, and the tops of the two side high-temperature insulation boards are fixedly connected to the bottoms of the two second sliders.

[0010] Preferably, a bidirectional lead screw is threaded between the inner surfaces of the two second sliders, and a first motor is fixedly connected to one side of the outer wall of the bidirectional lead screw.

[0011] Preferably, the outer wall of the bidirectional lead screw is fixedly fitted with two bearings, and the outer walls of the two bearings are fixedly inserted into the interior of the upper high-temperature insulation plate. The top of the heating furnace body is fixedly connected to a hydraulic cylinder, and the top of the upper high-temperature insulation plate is fixedly connected to the telescopic end of the hydraulic cylinder.

[0012] Preferably, a heat insulation box is fixedly connected to the bottom of the inner wall of the heating furnace body, and a rotating rod is movably inserted into the inner surface of the heat insulation box.

[0013] Preferably, a first gear is fixedly sleeved on the outer wall of the two rotating rods, and a second gear is meshed with the outer wall of the first gear.

[0014] Preferably, a second motor is fixedly inserted into the inner wall of the two second gears, and the inner wall of the heat insulation box is fixedly connected to the outer wall of the second motor, and a placement plate is fixedly connected to the top of the rotating rod.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, through the interaction of the various components of the device, the upper high-temperature heat insulation plate can be moved smoothly upward in the vertical direction by means of hydraulic cylinder drive and guide positioning function of guide component, thereby releasing its contact constraint with the bottom of the inner wall of the heating furnace. Subsequently, through the transmission mechanism of motor drive and threaded component, the two side heat insulation plates can be moved horizontally synchronously. In this way, the volume of the forging heating furnace cavity can be flexibly adjusted to accurately match the shape and specifications of the billet, significantly enhancing the temperature uniformity of the heating process, effectively reducing the ineffective diffusion loss of heat, thereby greatly improving heating efficiency and reducing energy consumption, providing reliable support for ensuring the heating quality of forgings and the stability of subsequent forging processes.

[0017] 2. In this utility model, through the interaction of the various components of the device, the billet can be rotated at a uniform speed during the heating process by the transmission of the motor drive combined with the gear set. This mechanism significantly improves the uniformity of heat transfer by changing the heating surface of the billet in all directions, effectively avoiding local overheating or underheating, thereby improving the heating quality and consistency of the billet. Attached Figure Description

[0018] Figure 1 This utility model provides a perspective view of the adjustable furnace cavity structure of a forging heating furnace.

[0019] Figure 2 This utility model provides a three-dimensional exploded view of a portion of the structure in the adjustable furnace cavity of a forging heating furnace;

[0020] Figure 3 This utility model provides a bottom-view perspective sectional view of a portion of the structure in the adjustable furnace cavity of a forging heating furnace;

[0021] Figure 4 This utility model presents a side-view perspective exploded view of a portion of the structure in the adjustable furnace cavity of a forging heating furnace.

[0022] Legend: 1. Heating furnace body; 2. Lifting door assembly; 3. Guide rod; 4. Upper high-temperature insulation plate; 5. Upper insulation layer; 6. First slide rail; 7. First slider; 8. Side high-temperature insulation plate; 9. Side insulation layer; 10. Second slide rail; 11. Second slider; 12. Bidirectional lead screw; 13. First motor; 14. Bearing; 15. Hydraulic cylinder; 16. Insulation box; 17. Rotating rod; 18. First gear; 19. Second gear; 20. Second motor; 21. Placement plate. Detailed Implementation

[0023] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0025] Example 1, as shown in the attached document Figure 1 -Appendix Figure 4As shown, this utility model provides a technical solution: an adjustable furnace cavity for a forging heating furnace, including a heating furnace body 1. A lifting door assembly 2 is fixedly installed on one side of the outer wall of the heating furnace body 1. Four guide rods 3 are fixedly connected to the inner surface of the heating furnace body 1. An upper high-temperature heat insulation plate 4 is movably sleeved between the outer surfaces of the four guide rods 3. An upper insulation layer 5 is fixedly connected to the top of the upper high-temperature heat insulation plate 4. Two sets of first sliding grooves 6 are opened at the bottom of the upper high-temperature heat insulation plate 4. A first slider 7 is slidably embedded in the inner surface of each of the two sets of first sliding grooves 6. A side high-temperature heat insulation plate 8 is fixedly connected between the bottoms of the two sets of first sliders 7. A side insulation layer 5 is fixedly connected to one side of the outer wall of each of the two side high-temperature heat insulation plates 8. The bottom of the upper high-temperature insulation plate 4 in the temperature layer 9 is provided with a second sliding groove 10. Two second sliders 11 are slidably embedded in the inner wall of the second sliding groove 10. The top of the two side high-temperature insulation plates 8 is fixedly connected to the bottom of the two second sliders 11. A bidirectional lead screw 12 is threaded between the inner walls of the two second sliders 11. A first motor 13 is fixedly connected to one side of the outer wall of the bidirectional lead screw 12. Two bearings 14 are fixedly sleeved on the outer wall of the bidirectional lead screw 12. The outer walls of the two bearings 14 are fixedly inserted into the interior of the upper high-temperature insulation plate 4. A hydraulic cylinder 15 is fixedly connected to the top of the heating furnace body 1. The top of the upper high-temperature insulation plate 4 is fixedly connected to the telescopic end of the hydraulic cylinder 15.

[0026] The overall effect of Embodiment 1 is as follows: When it is necessary to adjust the volume of the furnace cavity inside the forging heating furnace to accommodate billets of different sizes, the hydraulic cylinder 15 is first activated. Under the precise guidance of the four guide rods 3, its telescopic end drives the upper high-temperature heat insulation plate 4 to move vertically upward, thereby linking the two side high-temperature heat insulation plates 8 and the side insulation layer 9 to lift synchronously, releasing the contact constraint between the side heat insulation plates and the inner wall of the heating furnace body 1. At this time, the first motor 13 is activated, which drives the bidirectional lead screw 12 to rotate. Based on the principle of screw transmission, the two second sliders 11 move in opposite directions, driving the side high-temperature heat insulation plates... The horizontal position is adjusted, and the sliding cooperation between the two sets of first sliding grooves 6 and the first slider 7 ensures that the side heat insulation plate moves stably without deviation. After the two side high-temperature heat insulation plates 8 are positioned, the hydraulic cylinder 15 drives the upper high-temperature heat insulation plate 4 to move down again, so that the bottom of the side high-temperature heat insulation plate 8 is tightly attached to the inner wall of the heating furnace, forming an efficient sealing structure to prevent heat loss. Through this dynamic adjustment mechanism, the furnace cavity volume can be accurately matched with the billet shape and size, significantly improving heating uniformity, reducing ineffective heat loss, thereby improving heating efficiency, reducing energy consumption, and ensuring the heating quality of forgings.

[0027] Example 2, as Figure 2-4As shown, a heat insulation box 16 is fixedly connected to the bottom of the inner wall of the heating furnace body 1. A rotating rod 17 is movably inserted into the inner surface of the heat insulation box 16. A first gear 18 is fixedly sleeved on the outer surface of the two rotating rods 17. A second gear 19 is meshed with the outer surface of the first gear 18. A second motor 20 is fixedly inserted into the inner surface of the two second gears 19. The inner surface of the heat insulation box 16 is fixedly connected to the outer surface of the second motor 20. A placement plate 21 is fixedly connected to the top of the rotating rod 17.

[0028] The effect achieved by the entire embodiment 2 is as follows: after the billet is placed on top of the placement plate 21, the second motor 20 is started at the beginning of heating. Its output end drives the second gear 19 to rotate. Through the gear set transmission, the rotating rod 17 rotates synchronously with the placement plate 21, so that the billet flips at a uniform speed during the heating process. This mechanism significantly improves the uniformity of heat transfer by changing the heating surface of the billet in all directions, effectively avoiding local overheating or underheating, thereby improving the heating quality and consistency of the billet, providing a billet base with uniform microstructure and properties for subsequent forging processes, and reducing the risk of forging defects caused by temperature differences.

[0029] The working principle of the entire equipment is as follows: During use, the distance between the two high-temperature insulation plates 8 on both sides needs to be adjusted according to the size of the billet to ensure that the furnace cavity volume is compatible with the billet. The operator first starts the hydraulic cylinder 15. Under the guidance and positioning of the four guide rods 3, its telescopic end drives the upper high-temperature insulation plate 4 to be lifted vertically, and simultaneously pulls the two high-temperature insulation plates 8 on both sides and the two side insulation layers 9 to move upward, releasing the contact restriction between the side insulation plates and the inner wall of the heating furnace body 1. Then, the first motor 13 is started, and its output end drives the bidirectional lead screw 12 to rotate. By utilizing the cooperation between the reverse threads on both sides of the lead screw and the second slider 11, the two second sliders 11 are moved in opposite directions, thereby driving the side high-temperature insulation plates 8 horizontally. Adjustment is made, and the sliding guide of the two sets of first sliding grooves 6 and first sliders 7 ensures the smooth movement of the side heat insulation plate. After the side high temperature heat insulation plate 8 is positioned, the hydraulic cylinder 15 drives the upper high temperature heat insulation plate 4 to move downward again, so that the bottom of the side high temperature heat insulation plate 8 is tightly attached to the inner wall of the heating furnace to form an efficient sealing structure and prevent heat loss. Before the heating process is started, the billet is placed on the top of the placement plate 21. During the heating process, the second motor 20 is started first, and its output end drives the second gear 19 to rotate. Through the gear set transmission, the first gear 18, the rotating rod 17 and the placement plate 21 are driven to rotate in sequence, so that the billet is turned over at a uniform speed in the furnace cavity, thereby improving the uniformity of heat transfer.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A forge heating furnace adjustable hearth, characterized by: The furnace includes a heating furnace body (1), a lifting door assembly (2) is fixedly installed on one side of the outer wall of the heating furnace body (1), four guide rods (3) are fixedly connected to the inner surface of the heating furnace body (1), an upper high temperature heat insulation plate (4) is movably sleeved between the outer surfaces of the four guide rods (3), an upper heat insulation layer (5) is fixedly connected to the top of the upper high temperature heat insulation plate (4), two sets of first sliding grooves (6) are opened at the bottom of the upper high temperature heat insulation plate (4), a first slider (7) is slidably embedded in the inner surface of the two sets of first sliding grooves (6), and a side high temperature heat insulation plate (8) is fixedly connected between the bottoms of the two sets of first sliders (7).

2. An adjustable furnace cavity for a forging furnace as claimed in claim 1, wherein: A side insulation layer (9) is fixedly connected to one side of the outer wall of each of the two side high-temperature insulation plates (8). A second sliding groove (10) is provided at the bottom of the upper high-temperature insulation plate (4). Two second sliders (11) are slidably embedded in the inner surface of the second sliding groove (10), and the top of the two side high-temperature insulation plates (8) is fixedly connected to the bottom of the two second sliders (11).

3. An adjustable furnace cavity for a forging furnace as claimed in claim 2, wherein: A bidirectional lead screw (12) is threaded between the inner surfaces of the two second sliders (11), and a first motor (13) is fixedly connected to one side of the outer wall of the bidirectional lead screw (12).

4. An adjustable furnace chamber for a forging furnace as claimed in claim 3, wherein: The outer wall of the bidirectional lead screw (12) is fixedly fitted with two bearings (14), and the outer wall of the two bearings (14) is fixedly inserted into the interior of the upper high temperature insulation plate (4). The top of the heating furnace body (1) is fixedly connected with a hydraulic cylinder (15), and the top of the upper high temperature insulation plate (4) is fixedly connected to the telescopic end of the hydraulic cylinder (15).

5. An adjustable furnace chamber for a forging furnace as claimed in claim 4, wherein: A heat insulation box (16) is fixedly connected to the bottom of the inner wall of the heating furnace body (1), and a rotating rod (17) is movably inserted into the inner surface of the heat insulation box (16).

6. An adjustable furnace chamber for a forging furnace as claimed in claim 5, wherein: The outer walls of the two rotating rods (17) are fixedly fitted with a first gear (18), and the outer walls of the first gear (18) are meshed with a second gear (19).

7. An adjustable furnace chamber for a forging furnace as claimed in claim 6, wherein: The inner walls of the two second gears (19) are fixedly inserted with a second motor (20), and the inner wall of the heat insulation box (16) is fixedly connected to the outer wall of the second motor (20). The top of the rotating rod (17) is fixedly connected with a placement plate (21).

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