Section steel welding device

Abstract

A profile steel welding device is used for completing welding of a first plate and a second plate and comprises a first input roller way used for inputting the first plate and a second input roller way used for inputting the second plate. A first sheet metal is bent after penetrating through the first input roller way, makes contact with a second sheet metal penetrating through the second input roller way and is welded and formed through a high-frequency welding machine, the preheating device is arranged on the side of the first sheet metal and conducts preheating treatment on the first sheet metal before welding so that the first sheet metal can be softened, and the pressure welding roller is arranged on the side of the second sheet metal. The pressure welding roller is arranged at the bent position of the first plate to press the first plate and the second plate. According to the technical scheme, a preheating treatment device is additionally arranged in a specific structure, so that a steel plate needing to be bent is preheated and softened in advance before being welded, then a large welding entering angle is generated by the steel plate through a small pressure welding roller, and therefore the welding quality is improved. The technical scheme is simple and convenient, low in cost and beneficial to practice.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed steel welding in an automated steel section production line, and in particular to a steel section welding device. Background Art

[0002] In the field of modern fully automatic steel production lines, in order to meet the needs of the market, the production and processing of steel should gradually improve production efficiency and production quality. In the original production and processing technology, a larger pressure welding roller and a smaller entry angle are used, that is, a large-diameter pressure welding roller is used to press the two steel plates at the position where the two steel plates are spliced ​​together, so that the steel plates are directly sent to the high-frequency welding position for welding after a small bending angle is generated without being heated and softened. However, due to the hardness of the steel plates, the input speed of the incoming materials in this processing method will not be too high, and the internal stress after welding will cause the shape of the finished steel after welding to be unstable and easy to deform. In order to solve the above technical problems and improve the stability of steel forming and the efficiency of processing and production, technicians in this field preheat and soften the steel plates that need to be bent in advance, and then weld them. Such a preheated steel welding device has become a new popular trend. Summary of the invention

[0003] This embodiment provides a steel section welding device that can improve the stability of steel section forming and the efficiency of processing and production. By adding a preheating treatment device to the specific structure, the steel plate that needs to be bent is preheated and softened before welding, and then a smaller pressure welding roller is used to make it produce a larger welding entry angle, thereby improving the quality of welding. This technical solution is simple and convenient, low-cost, and conducive to practice.

[0004] Specifically, a steel section welding device is used to complete the welding of a first sheet material 1 and a second sheet material 2, including a first input roller 4 for inputting the first sheet material 1 and a second input roller 5 for inputting the second sheet material 2. The first sheet material 1 is bent after passing through the first input roller 4 and contacts with the second sheet material 2 passing through the second input roller 5 and is welded into shape by a high-frequency welding machine. A preheating device 6 and a pressure welding roller 7 are also provided. The preheating device 6 is arranged on the side of the first sheet material 1 to preheat the first sheet material 1 before welding to soften it. The pressure welding roller 7 is arranged at the bending part of the first sheet material 1 to press the first sheet material 1 and the second sheet material 2.

[0005] According to one aspect of the specific implementation of the first embodiment of the present invention, the pressure welding roller 7 is arranged on the opposite side where the first sheet material 1 and the second sheet material 2 contact each other, and a support roller 8 is also provided. The pressure welding roller 7 and the support roller 8 jointly complete the welding positioning of the first sheet material 1 and the second sheet material 2.

[0006] According to one aspect of a specific implementation of the first embodiment of the present invention, the bending angle of the first sheet material 1 is greater than or equal to 4°.

[0007] According to one aspect of the specific implementation of the first embodiment of the present invention, the first plate material 1 and the second plate material 2 after welding are perpendicular to each other to form a T shape.

[0008] According to one aspect of the specific implementation of the second embodiment of the present invention, a third input roller 9 is further provided for inputting a third sheet material 3. The third sheet material 3 is bent after passing through the third input roller 9 and comes into contact with the second sheet material 2 passing through the second input roller 5 and is welded into shape by a high-frequency welder. The same preheating device 6 is provided on the side of the third sheet material 3 to perform preheating treatment on it before welding to soften it and a pressure welding roller 7 is provided at the bending position to press the third sheet material 3 and the second sheet material 2.

[0009] According to one aspect of a specific implementation of the second embodiment of the present invention, the bending angle of the third sheet material 3 is greater than or equal to 4°.

[0010] According to one aspect of the specific implementation of the second embodiment of the present invention, the first plate 1, the second plate 2 and the third plate 3 after welding are perpendicular to each other to form an H shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Features, advantages, and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0012] Description of the serial numbers: first sheet material 1, second sheet material 2, first input roller table 4, second input roller table 5, preheating device 6, pressure welding roller 7, supporting roller 8, third sheet material 3, third input roller table 9, high-frequency probe 10.

[0013] Figure 1 It is a comparative technical solution in this field, a T-shaped steel processing process diagram.

[0014] Figure 2 It is a comparative technical solution in this field, and a process diagram of H-shaped steel processing.

[0015] Figure 3 It is a processing diagram of T-shaped steel according to a specific embodiment of the present invention.

[0016] Figure 4 It is a processing diagram of H-shaped steel according to a specific embodiment of the present invention.

[0017] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale. DETAILED DESCRIPTION

[0018] The following detailed description of the embodiments of the present invention is further described in detail in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present invention, but cannot be used to limit the scope of the present invention, that is, the present invention is not limited to the preferred embodiments described, and the scope of the present invention is defined by the claims.

[0019] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified, “vertical” and “parallel” do not just have absolute meanings in a mathematical sense, but can be understood as “approximately vertical” and “approximately parallel”.

[0020] It should be understood that the specific embodiments described are only used to explain the present invention, and are not used to limit the present invention. Terms such as first, second, etc. in the text are only used to distinguish one entity or operation from another entity or operation, and do not indicate any relationship or order between these entities or operations; in addition, terms such as up, down, left, right, front, back, etc. in the text that indicate direction or orientation only indicate relative direction or orientation, not absolute direction or orientation. In the absence of additional restrictions, the elements defined by the sentence "include" do not exclude the presence of other elements in the process, method, article or device that includes the elements.

[0021] Figure 1 It is a comparative technical solution in this field, a T-shaped steel processing process diagram.

[0022] Figure 3 It is a processing diagram of T-shaped steel according to a specific embodiment of the present invention.

[0023] like Figure 1 and Figure 3 As shown, this embodiment provides a steel section welding device that can improve the stability of steel section forming and the efficiency of processing and production. By adding a preheating treatment device to the specific structure, the steel plate that needs to be bent is preheated and softened before welding, and then a smaller pressure welding roller is used to make it produce a larger welding entry angle, thereby improving the quality of welding. This technical solution is simple and convenient, low-cost, and easy to practice. Compared with existing technical solutions, such as Figure 1The figure shows a first input roller 4 for inputting a first sheet material 1 and a second input roller 5 for inputting a second sheet material 2. When the first sheet material 1 contacts with the second sheet material 2 after passing through the first input roller 4, a pressure welding roller 7 is arranged on the outer side of one side of the first sheet material 1 and a supporting roller 8 is arranged on the outer side of one side of the second sheet material 2 to press and bend the first sheet material 1. A high-frequency probe 10 of a high-frequency welding machine is arranged at the contacting position to realize high-frequency welding and form a T-shaped steel perpendicular to each other. The first sheet material 1 is in a cold state before bending, that is, it has not been heated and softened, so it cannot produce a larger bending angle. In the original production and processing technology, a larger pressure welding roller 7 and a smaller entry angle are used, that is, a large-diameter pressure welding roller 7 is used to press the two steel plates at the position where the two steel plates are spliced ​​together, and the bending angle of the first sheet material 1 at the bending point is kept less than 4° to ensure that it can smoothly enter the welding station. In this way, the steel plate is directly sent to the high-frequency welding position for welding after a smaller bending angle is produced without being heated and softened. However, due to the hard steel plate, the input speed of the incoming material in this processing method will not be too high. The larger pressure welding roller 7 also makes it impossible for the high-frequency probe 10 of the high-frequency welding machine to get close to the contact point between the first sheet material 1 and the second sheet material 2, which makes the welding process of the high-frequency welding machine unable to reach the optimal level. In addition, after welding, the first sheet material 1 is bent and has internal stress, which will cause the shape of the finished steel section after welding to be unstable and easily deformed.

[0024] According to one aspect of a specific embodiment of the present invention, the detailed structure of the technical solution in the specific embodiment may include a first input roller 4 for inputting a first sheet material 1 and a second input roller 5 for inputting a second sheet material 2. When the first sheet material 1 contacts the second sheet material 2 after passing through the first input roller 4, a pressure welding roller 7 is arranged on the outer side of one side of the first sheet material 1 and a support roller 8 is arranged on the outer side of one side of the second sheet material 2 to press and bend the sheet material 1. A high-frequency probe 10 of a high-frequency welding machine is arranged at the contact position to achieve high-frequency welding and form a T-shaped steel perpendicular to each other. The first sheet 1 is also provided with a preheating device 6 at the position before bending. The preheating device 6 is preferably set as a medium frequency heating module in this embodiment. The first sheet 1 is preheated by the preheating device 6. The first sheet 1 has been preheated and softened before entering the high-frequency welding position, that is, it has been heated and softened, so it can produce a larger bending angle. This embodiment also uses a smaller pressure welding roller 7 and a larger entry angle, that is, a small-diameter pressure welding roller 7 is used to press the two steel plates at the position where the two steel plates are spliced ​​together, and the bending angle of the first sheet 1 at the bending position is kept greater than or equal to 4°. To ensure that it can smoothly enter the welding station, so that the steel plate can be sent to the high-frequency welding place for welding after being heated and softened through a larger bending angle. Since the steel plate is softer, the input speed of the incoming material can be greatly improved in this processing method. The smaller pressure welding roller 7 also allows the high-frequency probe 10 of the high-frequency welding machine to be closer to the contact point between the first sheet 1 and the second sheet 2. This makes the welding process of the high-frequency welding machine optimal. After welding, since the first sheet 1 has been pre-treated by heating and softening, it does not have internal stress after bending, so the shape of the finished steel section after welding is more stable and not easy to deform.

[0025] Figure 2 It is a comparative technical solution in this field, and a process diagram of H-shaped steel processing.

[0026] Figure 4 It is a processing diagram of H-shaped steel according to a specific embodiment of the present invention.

[0027] like Figure 2 and Figure 4 As shown, the specific technical feature that is different from the previous implementation is that the existing technical solution, such as Figure 2The first input roller 4 for inputting the first sheet material 1, the second input roller 5 for inputting the second sheet material 2, and the third input roller 9 for inputting the third sheet material 3 are shown. When the first sheet material 1 contacts the second sheet material 2 after passing through the first input roller 4, a pressure welding roller 7 is set on the outer side of one side of the first sheet material 1 to press and bend. When the third sheet material 3 contacts the second sheet material 2 after passing through the third input roller 9, a pressure welding roller 7 is set on the outer side of one side of the third sheet material 3 to press and bend. High-frequency welding is achieved by setting high-frequency probes 10 of a high-frequency welding machine at the contacting positions. The pressure welding roller 7 for pressing the first sheet material 1 to bend and the pressure welding roller 7 for pressing the third sheet material 3 to bend are staggered and not in the same position. After welding, the first sheet material 1, the second sheet material 2, and the third sheet material 3 are perpendicular to each other to form an H-shaped steel. The first sheet 1 and the third sheet 3 are in a cold state before bending, that is, they have not been heated and softened, so they cannot have a large bending angle. In the original production and processing technology, a larger pressure welding roller 7 and a smaller entry angle are used, that is, a large-diameter pressure welding roller 7 is used to press the two steel plates at the position where the two steel plates are spliced ​​together, and the bending angle of the first sheet 1 and the third sheet 3 at the bending position is kept less than 4° to ensure that they can enter the welding station smoothly, so that the steel plates can pass directly without being heated and softened. After a small bending angle is generated, it is sent to the high-frequency welding area for welding. However, due to the hardness of the steel plate, the input speed of the incoming material will not be too high in this processing method. The larger pressure welding roller 7 also makes it impossible for the high-frequency probe 10 of the high-frequency welding machine to get close to the contact points between the first sheet 1 and the second sheet 2 and the third sheet 3 and the second sheet 2. This makes it impossible for the welding process of the high-frequency welding machine to reach the optimal level. In addition, after welding, the first sheet 1 and the third sheet 3 are bent and have internal stress, which will cause the shape of the finished steel section after welding to be unstable and easily deformed.

[0028] According to one aspect of the specific embodiment of the present invention, the detailed structure of the technical solution in the specific embodiment may include a first input roller 4 for inputting the first sheet material 1, a second input roller 5 for inputting the second sheet material 2, and a third input roller 9 for inputting the third sheet material 3. When the first sheet material 1 contacts the second sheet material 2 after passing through the first input roller 4, a pressure welding roller 7 is set on the outer side of one side of the first sheet material 1 to press and bend. When the third sheet material 3 contacts the second sheet material 2 after passing through the third input roller 9, a pressure welding roller 7 is set on the outer side of one side of the third sheet material 3 to press and bend. High-frequency welding is achieved by setting a high-frequency probe 10 of a high-frequency welding machine at the contacting positions. Among them, the pressure welding roller 7 for pressing the first sheet material 1 to bend and the pressure welding roller 7 for pressing the third sheet material 3 to bend are staggered and not in the same position. After welding, the first sheet material 1, the second sheet material 2 and the third sheet material 3 are perpendicular to each other to form an H-shaped steel. The first sheet 1 and the third sheet 3 are also provided with a preheating device 6 at the position before bending, respectively. The preheating device 6 is preferably set as a medium frequency heating module in this embodiment. The first sheet 1 and the third sheet 3 are preheated by the preheating device 6. The first sheet 1 and the third sheet 3 have been preheated and softened before entering the high-frequency welding position, that is, they have been heated and softened, so they can produce a larger bending angle. This embodiment also uses a smaller pressure welding roller 7 and a larger entry angle, that is, a small-diameter pressure welding roller 7 is used to press the two steel plates at the position where the two steel plates are spliced ​​together, and the bending angle of the first sheet 1 and the third sheet 3 at the bending position is kept greater than or equal to 4° to ensure To ensure that it can smoothly enter the welding station, the steel plate is sent to the high-frequency welding position for welding after being heated and softened by generating a larger bending angle. Since the steel plate is softer, the input speed of the incoming material can be greatly improved in this processing method. The smaller pressure welding roller 7 also allows the high-frequency probe 10 of the high-frequency welding machine to be closer to the contact points between the first sheet 1 and the second sheet 2 and the contact points between the third sheet 3 and the second sheet 2. This makes the welding process of the high-frequency welding machine optimal. After welding, since the contact points between the first sheet 1 and the third sheet 3 are pre-treated by heating and softening, there is no internal stress after bending, so the shape of the finished steel section after welding is more stable and not easy to deform.

[0029] It should be understood that the description of the specific embodiments of the present invention is exemplary and should not be interpreted as an improper limitation on the scope of protection of the present invention. The scope of protection of the present invention is defined by its claims and covers all embodiments and obvious equivalent variations falling within its scope.

Claims

1. A steel section welding device, used for completing the welding of a first plate material (1) and a second plate material (2), comprising a first input roller (4) for inputting the first plate material (1) and a second input roller (5) for inputting the second plate material (2), wherein the first plate material (1) is bent after passing through the first input roller (4) and contacts with the second plate material (2) passing through the second input roller (5) and is welded into shape by a high-frequency welding machine, characterized in that A preheating device (6) and a pressure welding roller (7) are also provided. The preheating device (6) is arranged on the side of the first sheet material (1) to preheat the first sheet material (1) before welding to soften it so that the bending angle of the first sheet material (1) is greater than or equal to 4°. The pressure welding roller (7) is arranged at the bending part of the first sheet material (1) to press the first sheet material (1) and the second sheet material (2). The pressure welding roller (7) is arranged on the opposite side where the first sheet material (1) and the second sheet material (2) are in contact with each other and a supporting roller (8) is also provided. The pressure welding roller (7) and the supporting roller (8) jointly complete the welding positioning of the first sheet material (1) and the second sheet material (2).

2. A steel section welding device according to claim 1, characterized in that A third input roller (9) is also provided for inputting a third sheet material (3). After passing through the third input roller (9), the third sheet material (3) is bent and contacts the second sheet material (2) passing through the second input roller (5) and is welded into shape by a high-frequency welder. A similar preheating device (6) is provided on the side of the third sheet material (3) to preheat the third sheet material (3) before welding to soften the third sheet material (3) so that the bending angle of the third sheet material (3) is greater than or equal to 4°. The pressure welding roller (7) is provided at the bending position to press the third sheet material (3) and the second sheet material (2) together.

3. A steel section welding device according to claim 2, characterized in that After welding, the first plate (1), the second plate (2) and the third plate (3) are perpendicular to each other to form an H shape.

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