Plate fire bending device

Abstract

The invention provides a plate fire bending device which comprises a high-temperature-resistant automatic conveying mechanism, and the high-temperature-resistant automatic conveying mechanism comprises a high-temperature-resistant rack and a plurality of conveying rollers rotationally arranged on the high-temperature-resistant rack. A fire bending mechanism is arranged on the high-temperature-resistant rack, and a forming module is arranged under the fire bending mechanism. The fire bending mechanism comprises mounting frames arranged on the two sides of the high-temperature-resistant rack correspondingly, each mounting frame is provided with a first telescopic push rod, the end of an output rod of each first telescopic push rod is connected with a pressing plate through a mounting base, and a forming pressing strip is fixedly arranged on the lower portion of each pressing plate. Automatic conveying of high-temperature plates is achieved through the high-temperature-resistant conveying mechanism, uniform pressing forming is achieved through the symmetrically-arranged fire bending mechanisms, the adjustable forming module adapts to plates of different specifications, the automation degree, the forming precision and the production efficiency of fire bending operation are effectively improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This invention relates to the field of fire-curing equipment technology, and specifically to a fire-curing device for sheet metal. Background Technology

[0002] In fields such as power transmission towers, steel structure bridges, and heavy machinery, sheet metal components of various shapes are widely used. Among them, the bending and forming of profiles such as angle steel and channel steel typically employs a flame bending process. Flame bending involves locally heating the sheet metal to a plastic state, then applying external force to bend and deform it, and finally cooling it to obtain the desired angle or shape. Traditional flame bending operations rely heavily on manual labor. Workers heat the sheet metal with a flame and then use simple molds and hammers or jacks to shape it. This process is not only labor-intensive and inefficient, but also makes it difficult to guarantee forming accuracy. Especially for mass-produced components of the same specifications, poor angle consistency severely affects the quality of subsequent assembly.

[0003] With the development of automation technology, some enterprises have begun to adopt semi-mechanized blasting equipment. However, these devices often have the following drawbacks: First, the conveying mechanism is mostly a common roller conveyor, which cannot withstand the continuous baking of high-temperature boards and is prone to deformation and damage. Second, the forming mechanism is mostly single-point pressure, resulting in uneven force and board distortion. Third, there is a lack of automatic unloading and flipping mechanisms matched with the conveyor line, requiring manual handling of the formed boards, which is not only inefficient but also poses a risk of burns. Therefore, how to achieve automatic conveying, precise positioning, uniform pressure forming, and automatic unloading of high-temperature boards has become a pressing technical problem to be solved in this field. Summary of the Invention

[0004] In view of this, the present invention provides a board fire-curing device to solve the problems of low automation, poor forming accuracy and poor high-temperature adaptability in the fire-curing operation of the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a plate bending device, including a high-temperature resistant automatic conveying mechanism for conveying high-temperature plates. The high-temperature resistant automatic conveying mechanism includes a high-temperature resistant frame and multiple conveying rollers rotatably arranged on the high-temperature resistant frame. A bending mechanism is also arranged on the high-temperature resistant frame, and a forming module adapted to the bending mechanism is arranged directly below the bending mechanism. The bending mechanism includes mounting frames respectively arranged on both sides of the high-temperature resistant frame. Each mounting frame is provided with a first telescopic push rod. The output rod end of the first telescopic push rod is fixedly connected to a mounting seat. A pressure plate is fixedly arranged on the mounting seat. A forming pressure strip is fixedly arranged at the lower part of the pressure plate. The forming pressure strip can bend and shape the high-temperature plates on the forming module by moving downward.

[0006] Furthermore, the molding module includes a lower mold base fixedly mounted on a high-temperature resistant frame. The lower mold base has a U-shaped structure, and lower templates are respectively provided between the two vertical parts of the lower mold base. The area between the two lower templates constitutes a molding chamber, and the molding pressure strip is located directly above the molding chamber.

[0007] Furthermore, a second telescopic push rod is provided below the high-temperature resistant frame and at the lower part of the lower mold base. The output rod of the second telescopic push rod faces upward and can contact the bottom of the lower mold base, which is used to lift the lower mold base after molding to assist in demolding.

[0008] Furthermore, a flipping mechanism is provided at the end of the conveying roller along the material conveying direction. The flipping mechanism includes a flipping frame provided at the end of the conveying roller, on which multiple flipping rollers are rotatably arranged. A receiving and conveying mechanism is hinged to the end of the flipping frame. The receiving and conveying mechanism includes a support frame hinged to the end of the flipping frame, on which multiple guide rollers are rotatably arranged. A third telescopic push rod is hinged to the end of the support frame. The output rod end of the third telescopic push rod is hinged to the end of the support frame. The tilt angle of the support frame can be adjusted by the extension and retraction of the third telescopic push rod to receive the molded sheet material sliding off the flipping frame.

[0009] Furthermore, the first telescopic push rod, the second telescopic push rod, and the third telescopic push rod are all high-temperature resistant hydraulic push rods. Their cylinder bodies are made of heat-resistant steel, their internal seals are made of high-temperature resistant fluororubber, and their hydraulic medium is high-temperature resistant and fire-resistant hydraulic oil.

[0010] Furthermore, the high-temperature resistant automatic conveying mechanism also includes a drive unit mounted on a high-temperature resistant frame. The ends of two adjacent conveying rollers are respectively fixed with meshing transmission gears. The output shaft end of the drive unit is connected to the gear at the end of one of the conveying rollers to achieve synchronous rotation of all conveying rollers.

[0011] Furthermore, the driving component is a servo motor, which is selected from Siemens 1FK7 series or Mitsubishi HG-KR series, and is equipped with a reducer. Precise speed adjustment and positioning are achieved through a PLC controller.

[0012] Furthermore, the high-temperature resistant frame and conveyor rollers are made of heat-resistant alloy steel (such as 310S stainless steel) and coated with a high-temperature resistant and anti-oxidation coating, enabling them to work stably in high-temperature environments above 800℃ for a long time.

[0013] Furthermore, the mounting bracket and the high-temperature resistant frame are detachably connected, making it easy to adjust the position of the flame-curing mechanism according to the width of the sheet metal.

[0014] Furthermore, multiple adjustment holes are provided on the two vertical parts of the lower mold base. The lower template is fixed to the adjustment holes by bolts. The width of the forming chamber can be adjusted by changing the installation position of the lower template to accommodate different specifications of sheet metal.

[0015] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects: 1. By setting up a high-temperature resistant automatic conveying mechanism, it can directly convey the heated plates without waiting for cooling, avoiding the problem of deformation and damage of traditional conveying rollers due to high temperature, and improving the durability and continuous operation capability of the equipment.

[0016] 2. The fire-curing mechanism uses symmetrically arranged first telescopic push rods on both sides to synchronously drive the forming pressure strip downward, so that the plate is subjected to uniform force and the forming angle is accurate, effectively preventing the torsion and deformation caused by unilateral pressure and significantly improving the forming quality.

[0017] 3. The molding module adopts a U-shaped lower mold base and an adjustable lower mold plate structure. The width of the molding chamber is adjustable, which can adapt to different specifications of sheet metal, expand the application range of the equipment, and reduce the mold replacement cost.

[0018] 4. The second telescopic push rod is set to assist in demolding, which effectively solves the problem of high-temperature sheet metal sticking to the mold, ensures that the molded parts can be released smoothly, avoids manual prying, and improves production efficiency and operational safety.

[0019] 5. The combined design of the flipping mechanism and the receiving and conveying mechanism realizes the automatic unloading and conveying of the formed sheet, reducing manual intervention and labor intensity. At the same time, the guide roller angle can be adjusted by the third telescopic push rod, which can flexibly connect to subsequent equipment of different heights.

[0020] 6. Key components are manufactured using high-temperature resistant hydraulic push rods and heat-resistant alloy materials, ensuring long-term stable operation of the equipment in harsh high-temperature environments, reducing maintenance frequency, and extending equipment life.

[0021] 7. The servo motor, in conjunction with gear transmission, enables synchronous and precise control of the conveyor rollers, ensuring both the smoothness of the sheet material conveying and accurate stopping according to process requirements, providing reliable positioning for subsequent precise forming. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the plate flame-curing device of the present invention; Figure 2 This is an isometric view of the plate bending device of the present invention; Figure 3 This is a front view of the plate bending device of the present invention; Figure 4 This is a side view of the plate bending device of the present invention.

[0023] Explanation of reference numerals in the attached drawings: 100, High-temperature resistant automatic conveying mechanism; 110, High-temperature resistant frame; 120, Conveying roller; 200, Flaming mechanism; 210, Forming strip; 220, Mounting frame; 230, First telescopic push rod; 240, Mounting base; 250, Pressure plate; 300, Forming module; 310, Lower mold base; 320, Lower template; 400, Second telescopic push rod; 500, Tilting mechanism; 510, Tilting frame; 520, Tilting roller; 530, Third telescopic push rod; 600, Receiving and conveying mechanism; 610, Support frame; 620, Guide roller. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of the present invention. Figure 1-4 The technical solutions of the embodiments of the present invention will be clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention are within the scope of protection of the present invention.

[0025] Example Reference Figures 1 to 4 A sheet metal bending device includes a high-temperature resistant automatic conveying mechanism 100, a bending mechanism 200, a forming module 300, and a flipping mechanism 500.

[0026] The high-temperature resistant automatic conveying mechanism 100 includes a high-temperature resistant frame 110 and multiple conveying rollers 120 rotatably mounted on the frame 110. The high-temperature resistant frame 110 is welded from 310S stainless steel plate, providing excellent high-temperature strength. The conveying rollers 120 are hollow rollers, also made of 310S stainless steel, with a high-temperature resistant, anti-oxidation ceramic coating on their surface. A drive unit is mounted on one side of the high-temperature resistant frame 110. In this embodiment, a Siemens 1FK7060-5AF71-1EH0 servo motor is used. Its output shaft is connected to a drive gear via a coupling. The drive gear meshes with the driven gear at the end of the outermost conveying roller 120. The driven gears of adjacent conveying rollers 120 mesh with each other sequentially, thereby achieving synchronous rotation of all conveying rollers 120. The servo motor is equipped with a Siemens S7-1200 PLC controller for precise position control.

[0027] like Figure 1 and Figure 2As shown, a bending mechanism 200 is installed in the middle of the high-temperature resistant frame 110. The bending mechanism 200 includes mounting brackets 220 fixed on both sides of the high-temperature resistant frame 110. The mounting brackets 220 are bent parts of heat-resistant steel plates and are fixed to the high-temperature resistant frame 110 by bolts. Their left and right positions can be adjusted according to the width of the plate. Each mounting bracket 220 is fixed with a first telescopic push rod 230. The first telescopic push rod 230 is a high-temperature resistant hydraulic push rod, model HSG·L-01-80 / 45-200. The cylinder body is made of heat-resistant steel, the piston rod surface is hard chrome plated, the seal is fluororubber, and the hydraulic medium is phosphate ester fire-resistant hydraulic oil. The output rod end of the first telescopic push rod 230 is fixedly connected to a mounting base 240. The lower end of the mounting base 240 is fixed with a pressure plate 250 by bolts. A forming pressure strip 210 is welded and fixed to the lower part of the pressure plate 250. The cross-sectional shape of the forming pressure strip 210 matches the bending angle of the plate to be formed.

[0028] like Figure 1 and Figure 3 As shown, a forming module 300 is fixedly mounted on a high-temperature resistant frame 110 directly below the flame forming mechanism 200. The forming module 300 includes a lower mold base 310, which has a U-shaped structure and is integrally cast from heat-resistant cast iron. Lower templates 320 are symmetrically arranged between the two vertical sections of the lower mold base 310. The lower templates 320 are fixed to the inner side of the vertical sections of the lower mold base 310 by bolts. The area between the two lower templates 320 constitutes a forming chamber, and the forming pressure strip 210 is located directly above the forming chamber. Multiple vertically arranged adjustment holes are provided on the two vertical sections of the lower mold base 310. By changing the fixed position of the lower templates 320, the width of the forming chamber can be adjusted to accommodate plates of different thicknesses.

[0029] like Figure 1 and Figure 4 As shown, a second telescopic push rod 400 is installed below the high-temperature resistant frame 110 and at the bottom of the lower mold base 310. The second telescopic push rod 400 is the same model as the first telescopic push rod 230, with its output rod facing upward and a top block fixed to its end. After molding is completed, the second telescopic push rod 400 extends, and the top block pushes the lower mold base 310 upward, separating the lower mold base 310 and the lower template 320 from the molded sheet to prevent adhesion.

[0030] A tilting mechanism 500 is provided at the end of the conveying roller 120 along the material conveying direction. The tilting mechanism 500 includes a tilting frame 510, which is hinged to the end of the high-temperature resistant frame 110 via a rotating shaft. Multiple tilting rollers 520 are rotatably mounted on the tilting frame 510 via bearings. A receiving and conveying mechanism 600 is hinged to the end of the tilting frame 510. The receiving and conveying mechanism 600 includes a support frame 610, on which multiple guide rollers 620 are rotatably mounted. A third telescopic push rod 530 is hinged to the end of the support frame 610. The third telescopic push rod 530 is of the same type as the previous two, with its cylinder hinged to a support fixed to the ground, and its output rod end hinged to the end of the support frame 610. By controlling the extension and retraction of the third telescopic push rod 530, the tilt angle of the support frame 610 can be adjusted, so that the guide rollers 620 form a smooth conveying ramp, guiding the formed sheet to the next station.

[0031] In this embodiment, all hydraulic push rods are connected to the same hydraulic station, which is equipped with a solenoid directional valve and a pressure relay, and is controlled by a PLC.

[0032] Angle steel billets heated to 850℃ are placed on conveyor rollers 120. The PLC-controlled servo motor starts, and the conveyor rollers 120 transport the angle steel directly above the forming module 300. When the angle steel reaches the predetermined position, the PLC sends a signal to stop the servo motor, and the conveyor rollers 120 stop rotating. Subsequently, the PLC controls the hydraulic valves to simultaneously extend the two first telescopic push rods 230, pushing the forming pressure strip 210 downwards. The forming pressure strip 210 presses into the forming cavity, working together with the lower template 320 to bend the angle steel legs to 90°. After holding the pressure for 5 seconds, the first telescopic push rods 230 retract, while the second telescopic push rod 400 extends, and the top block lifts the lower mold base 310, causing the formed part to separate from the lower template 320. Then, the second telescopic push rod 400 retracts, and the lower mold base 310 retracts using a self-resetting mechanism. The PLC restarts the servo motor, and the conveyor roller 120 transports the formed angle steel forward to the tilting frame 510. Under the action of gravity, the angle steel slides down the tilting roller 520 onto the guide roller 620. By adjusting the length of the third telescopic push rod 530, the angle steel is smoothly dropped onto the collection rack. At this point, one work cycle is completed.

[0033] Working principle and usage: During operation, the sheet material to be processed is preheated to the required temperature (e.g., the leg of an angle steel is heated to 800℃~1000℃), and then the high-temperature sheet material is conveyed to the top of the forming module 300 along the conveying direction by the conveying roller 120. When the sheet material reaches the predetermined position, the conveying roller 120 stops rotating, and the bending mechanism 200 is activated: the first telescopic push rod 230 pushes the pressure plate 250 and the forming pressure strip 210 downward, and the forming pressure strip 210 enters the forming cavity of the lower mold base 310, cooperating with the lower mold plate 320 to squeeze and bend the high-temperature sheet material to the required angle (e.g., 90°). After holding the pressure for an appropriate time, the first telescopic push rod 230 returns to its original position, and the forming pressure strip 210 rises; if the sheet material is stuck to the lower mold base 310, the second telescopic push rod 400 can be activated, and its output rod pushes the bottom of the lower mold base 310 upward, so that the forming cavity is separated from the sheet material, and demolding is achieved.

[0034] Subsequently, the conveyor roller 120 restarts, continuing to transport the formed sheet forward to the flipping mechanism 500. The flipping roller 520 on the flipping frame 510 receives the sheet, and under gravity, the sheet slides down the flipping roller 520 onto the guide roller 620 of the receiving conveyor mechanism 600. According to the requirements of subsequent processes, the tilt angle of the support frame 610 can be adjusted via the third telescopic push rod 530, allowing the sheet to smoothly slide to the next station or collection frame. Throughout the process, the servo motor precisely controls the start, stop, and speed of the conveyor roller 120 according to PLC instructions, and the movement of each telescopic push rod is uniformly controlled by the hydraulic system, ensuring coordinated and orderly operation of each process.

[0035] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A device for heat-curing sheet metal, comprising a high-temperature resistant automatic conveying mechanism (100) for conveying high-temperature sheet metal, characterized in that: A fire-curing mechanism (200) is provided above the high-temperature resistant automatic conveying mechanism (100), and a forming module (300) adapted to the fire-curing mechanism (200) is provided below the fire-curing mechanism (200); the fire-curing mechanism (200) includes a forming pressure strip (210) that can be raised and lowered relative to the forming module (300).

2. The plate flame-curing device as described in claim 1, characterized in that: The high-temperature resistant automatic conveying mechanism (100) includes a high-temperature resistant frame (110) and multiple conveying rollers (120) rotatably mounted on the high-temperature resistant frame (110); the fire-curing mechanism (200) also includes mounting frames (220) respectively mounted on both sides of the high-temperature resistant frame (110), each mounting frame (220) is provided with a first telescopic push rod (230), the output rod end of the first telescopic push rod (230) is fixedly connected to a pressure plate (250) through a mounting seat (240), and the forming pressure strip (210) is fixedly mounted on the lower part of the pressure plate (250).

3. The plate flame-curing device as described in claim 2, characterized in that: The molding module (300) includes a lower mold base (310) fixedly mounted on a high-temperature resistant frame (110). The lower mold base (310) has a U-shaped structure. Lower templates (320) are respectively provided between the two vertical parts of the lower mold base (310). The area between the two lower templates (320) constitutes a molding chamber. The molding strip (210) is located directly above the molding chamber.

4. The plate flame-curing device as described in claim 3, characterized in that: A second telescopic push rod (400) is provided below the high-temperature resistant frame (110) and at the lower part of the lower mold base (310). The output rod of the second telescopic push rod (400) faces upward and can contact the bottom of the lower mold base (310).

5. The plate burning device as described in claim 4, characterized in that: A flipping mechanism (500) is provided at the end of the conveying roller (120) along the material conveying direction. The flipping mechanism (500) includes a flipping frame (510) provided at the end of the conveying roller (120). Multiple flipping rollers (520) are rotatably provided on the flipping frame (510). A receiving and conveying mechanism (600) is hinged to the end of the flipping frame (510). The receiving and conveying mechanism (600) includes a support frame (610) hinged to the end of the flipping frame (510). Multiple guide rollers (620) are rotatably provided on the support frame (610). A third telescopic push rod (530) is hinged to the end of the support frame (610).

6. The plate flame-curing device as described in claim 5, characterized in that: The first telescopic push rod (230), the second telescopic push rod (400) and the third telescopic push rod (530) are all high-temperature resistant hydraulic push rods.

7. The plate flame-curing device as described in claim 2, characterized in that: The high-temperature resistant automatic conveying mechanism (100) also includes a drive unit mounted on a high-temperature resistant frame (110). The ends of two adjacent conveying rollers (120) are meshed by gears, and the output shaft end of the drive unit is connected to the gear at the end of one of the conveying rollers (120).

8. The plate flame-curing device as described in claim 7, characterized in that: The driving component is a servo motor.

9. The plate flame-curing device as described in claim 3, characterized in that: The lower mold base (310) has multiple adjustment holes on its two vertical parts, and the lower template (320) is fixed to the adjustment holes by bolts.

10. The plate burning apparatus according to any one of claims 2 to 9, characterized in that: The high-temperature resistant frame (110), conveyor roller (120), lower mold base (310), and lower template (320) are all made of heat-resistant alloy steel and coated with a high-temperature resistant and anti-oxidation coating.

Images