Preheating furnace before forging

Abstract

The utility model discloses a pre-forging preheating furnace which comprises a chain plate, a furnace panel and a furnace shell, the chain plate penetrates through the furnace shell, a furnace lining and an inner lining plate are arranged in the furnace shell, an air duct is formed between the inner lining plate and the furnace lining, and heating elements which penetrate through the furnace lining and the inner lining plate and are located on the upper side and the lower side of the chain plate for cyclic heating are installed in the furnace shell. An infrared thermometer is installed at the position, close to the discharging end, of the furnace shell, a correlation switch, the infrared thermometer and an optical grating are installed at the discharging end of the furnace shell, and a furnace door is installed on a furnace panel at the discharging end of the furnace shell. The automatic preheating device is reasonable in structural design, capable of fully preheating workpieces, capable of achieving automation, improving production efficiency and product quality, simple in operation, capable of reducing operation difficulty and capable of enabling operators to be safer.

Description

Technical Field

[0001] The utility model relates to the technical field of preheating furnaces, in particular to a preheating furnace before forging. Background Art

[0002] Aluminum alloy is an alloy with aluminum as the base and a certain amount of other alloying elements added. It is one of the light metal materials. Aluminum alloy materials have good casting properties and plastic processing properties, good electrical and thermal conductivity, good corrosion resistance and weldability. They can be used as structural materials and are widely used in aerospace, aviation, transportation, construction, electromechanical, light chemicals and daily necessities. Aluminum alloy workpieces usually need to be preheated before forging.

[0003] At present, the existing equipment for preheating aluminum alloy workpieces before forging is usually a periodic heating furnace, which requires manual opening of the furnace door to put in and take out. The production efficiency is low, the product temperature cannot be accurately guaranteed, which in turn leads to the inability to guarantee product quality. In addition, the operation process is cumbersome, the safety of the operators is poor, and they are prone to burns, which poses a safety hazard. For this reason, we designed a preheating furnace before forging to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problems existing in the prior art, and to propose a preheating furnace before forging, which can fully preheat the workpiece, and the equipment is automated, so as to improve production efficiency and product quality, simplify the operation, reduce the difficulty of operation, and make the operator safer.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A preheating furnace before forging comprises a chain plate, a furnace panel and a furnace shell, wherein the chain plate passes through the furnace shell, a furnace lining and an inner lining plate are arranged in the furnace shell, an air duct is formed between the inner lining plate and the furnace lining, a heating element passing through the furnace lining and the inner lining plate and located on the upper and lower sides of the chain plate for circulating heating is installed in the furnace shell, an infrared thermometer is installed near the discharge end of the furnace shell, a furnace door is installed on the furnace panel at the discharge end of the furnace shell, and a through-beam switch, an infrared thermometer and a grating are installed at the discharge end of the furnace shell.

[0007] Preferably, large sprockets are installed at the feed end and the discharge end of the furnace shell, and multiple positioning sprockets are installed on the furnace shell. The chain plate is wound between the two large sprockets and the multiple positioning sprockets, one of the large sprockets is driven to rotate by a motor reducer, and a tensioning device for controlling the tension of the chain plate is installed on the furnace shell.

[0008] Preferably, the heating element comprises a plurality of electric heating tubes installed in the furnace shell and respectively located on the upper and lower sides of the chain plate and evenly distributed, a plurality of thermocouples passing through the furnace lining and the lining plate are installed in the furnace shell, and a plurality of fans whose air outlet ends are interconnected with the interior of the furnace shell are installed on the furnace shell.

[0009] Preferably, a plurality of air guide plates are installed on the inner side wall of the furnace shell.

[0010] Preferably, a cylinder is installed at the furnace panel at the discharge end of the furnace shell, and the cylinder drives the furnace door to open and close.

[0011] Preferably, protective covers are installed on both the front and rear sides of the furnace shell.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. In this preheating furnace before forging, the electric heating tube can evenly heat the air in the furnace shell. The fan rotates to make the air flow and circulate and heat it, so that the uniformity of the furnace temperature is guaranteed. The air guide plate can guide the hot air to flow to the workpiece to fully preheat the workpiece.

[0014] 2. In this preheating furnace before forging, the chain plate can drive the workpiece to move. The workpiece is heated inside the furnace body. The shooting switch controls the movement of the workpiece, the infrared thermometer measures the temperature of the workpiece, the grating senses the position of the workpiece, and the cylinder drives the furnace door to open and close. Workers can take out the workpieces in turn at the discharge end. The equipment is automated, which improves production efficiency and product quality. The operation is simplified, the operation difficulty is reduced, and the operator is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main cross-sectional structure of a pre-forging preheating furnace proposed by the utility model;

[0016] Figure 2 This is a schematic structural diagram of the feeding end of a preheating furnace before forging proposed by the utility model;

[0017] Figure 3 The utility model is a schematic structural diagram of a side view of a discharge end of a preheating furnace before forging.

[0018] In the figure: 1. chain plate; 2. furnace panel; 3. furnace shell; 4. thermocouple; 5. fan; 6. furnace lining; 7. infrared thermometer; 8. protective cover; 9. lining plate; 10. air guide plate; 11. furnace door; 12. cylinder; 13. electric heating tube; 14. through-beam switch; 15. grating; 16. motor reducer; 17. positioning sprocket; 18. tensioning device; 19. large sprocket. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 3 A preheating furnace before forging, comprising a chain plate 1, a furnace panel 2 and a furnace shell 3, a protective cover 8 is installed on both the front and rear sides of the furnace shell 3, the chain plate 1 passes through the furnace shell 3, a large sprocket 19 is installed at the feeding end and the discharging end of the furnace shell 3, a plurality of positioning sprockets 17 are installed on the furnace shell 3, the chain plate 1 is wound between two large sprockets 19 and a plurality of positioning sprockets 17, one of the large sprockets 19 is driven to rotate by a motor reducer 16, the motor reducer 16 is installed on the furnace shell 3, the output shaft of the motor reducer 16 is connected to the rotating shaft of the large sprocket 19 through a transmission belt, so that the large sprocket 19 can rotate synchronously with the output shaft of the motor reducer 16, and a tensioning device 18 for controlling the tensioning of the chain plate 1 is installed on the furnace shell 3;

[0021] A furnace lining 6 and an inner lining plate 9 are provided in the furnace shell 3, and an air duct is formed between the inner lining plate 9 and the furnace lining 6. A heating element passing through the furnace lining 6 and the inner lining plate 9 and located on the upper and lower sides of the chain plate 1 for cyclic heating is installed in the furnace shell 3. The heating element includes a plurality of electric heating tubes 13 installed in the furnace shell 3 and located on the upper and lower sides of the chain plate 1 and evenly distributed, so that the plurality of electric heating tubes 13 can evenly heat the air in the furnace shell 3. A plurality of thermocouples 4 passing through the furnace lining 6 and the inner lining plate 9 are installed in the furnace shell 3. The thermocouples 4 can measure the temperature in the furnace shell 3. A plurality of fans 5 whose air outlet ends are interconnected with the inside of the furnace shell 3 are installed on the furnace shell 3. The rotation of the fans 5 allows the air to flow for cyclic heating, so that the uniformity of the furnace temperature is further ensured. A plurality of air guide plates 10 are installed on the inner side wall of the furnace shell 3. The air guide plates 10 can guide the hot air to flow toward the workpiece to preheat the workpiece.

[0022] An infrared thermometer 7 is installed near the discharge end of the furnace shell 3, a furnace door 11 is installed on the furnace panel 2 at the discharge end of the furnace shell 3, a cylinder 12 is installed at the furnace panel 2 at the discharge end of the furnace shell 3, and the cylinder 12 drives the furnace door 11 to open and close. A beam switch 14, an infrared thermometer 7 and a grating 15 are installed at the discharge end of the furnace shell 3. The beam switch 14 can control the workpiece to stop moving, the infrared thermometer 7 can measure the temperature of the workpiece, and the grating 15 can sense the position of the workpiece.

[0023] The functional principle of the utility model can be explained through the following operation modes:

[0024] In the utility model, when the preheating furnace before forging is working, the electric heating tube 13 heats the air in the furnace body, the fan 5 rotates to make the air flow and circulate and heat, so that the uniformity of the furnace temperature is guaranteed, the motor reducer 16 drives the large sprocket 19 to rotate, which can move the chain plate 1, drive the workpiece into the furnace body, and the workpiece moves in the furnace body for heating. When the workpiece passes through the shooting switch 14 at the discharge end, it stops moving, and the infrared thermometer 7 measures the temperature of the workpiece. After the temperature of the workpiece reaches the set temperature, the workpiece continues to move toward the furnace door 11. When the workpiece enters the grating 15 area, the furnace door 11 is opened under the drive of the cylinder 12, and the operator takes the workpiece for forging. After the workpiece leaves the grating 15 area, the furnace door 11 is closed under the drive of the cylinder 12, and the workpiece will be taken out in turn in this way. The operation is simple and easy, and there is no need to manually open the furnace door 11 to put in and take out the workpiece, which simplifies the operation process and ensures the safety during the operation.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A preheating furnace before forging, comprising a chain plate (1), a furnace panel (2) and a furnace shell (3), characterized in that: The chain plate (1) passes through a furnace shell (3), a furnace lining (6) and an inner lining plate (9) are provided in the furnace shell (3), an air duct is formed between the inner lining plate (9) and the furnace lining (6), a heating element is installed in the furnace shell (3) and passes through the furnace lining (6) and the inner lining plate (9) and is located on the upper and lower sides of the chain plate (1) for cyclic heating, an infrared thermometer (7) is installed near the discharge end of the furnace shell (3), a beam switch (14), an infrared thermometer (7) and a grating (15) are installed at the discharge end of the furnace shell (3), and a furnace door (11) is installed on the furnace panel (2) at the discharge end of the furnace shell (3).

2. A preheating furnace before forging according to claim 1, characterized in that: Large sprockets (19) are installed at the feed end and the discharge end of the furnace shell (3), and a plurality of positioning sprockets (17) are installed on the furnace shell (3). The chain plate (1) is wound between the two large sprockets (19) and the plurality of positioning sprockets (17), one of the large sprockets (19) being driven to rotate by a motor reducer (16), and a tensioning device (18) for controlling the tensioning of the chain plate (1) is installed on the furnace shell (3).

3. A preheating furnace before forging according to claim 1, characterized in that: The heating element comprises a plurality of electric heating tubes (13) installed in the furnace shell (3) and respectively located on the upper and lower sides of the chain plate (1) and evenly distributed; a plurality of thermocouples (4) passing through the furnace lining (6) and the inner lining plate (9) are installed in the furnace shell (3); and a plurality of fans (5) whose air outlet ends are interconnected with the interior of the furnace shell (3) are installed on the furnace shell (3).

4. A preheating furnace before forging according to claim 3, characterized in that: A plurality of air guide plates (10) are installed on the inner side wall of the furnace shell (3).

5. A preheating furnace before forging according to claim 1, characterized in that: A cylinder (12) is installed on the furnace panel (2) at the discharge end of the furnace shell (3), and the cylinder (12) drives the furnace door (11) to open and close.

6. A preheating furnace before forging according to claim 1, characterized in that: Protective covers (8) are installed on both the front and rear sides of the furnace shell (3).

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