I-beam assembly equipment and I-beam manufacturing method

Abstract

This invention provides an I-beam assembly device and an I-beam manufacturing method. The I-beam assembly device includes: an assembly platform with a web support surface, an upper flange positioning groove, and a lower flange placement groove, for correspondingly and completely supporting the web, upper flange, and lower flange respectively along the length of the I-beam; a conveying mechanism with a conveying roller conveyor that can be raised and lowered relative to the assembly platform; a positioning mechanism for positioning the web, upper flange, and lower flange along the length of the assembly platform; an upper flange pressing mechanism for positioning and fixing the upper flange in the upper flange support groove; a straight section pressing mechanism for pushing the lower flange towards the upper flange direction to splice and form a fixed cross-section segment of the I-beam; and a variable cross-section forming mechanism for pushing the lower flange towards the upper flange direction at multiple positions along the length of the lower flange, bending the lower flange to conform to the edge shape of the web to splice and form a variable cross-section segment of the I-beam.

Description

Technical Field

[0001] The invention relates to the field of I-beam manufacturing, and in particular to an I-beam assembling device and an I-beam manufacturing method. Background Art

[0002] The longitudinal beam of a semi-trailer is a very important load-bearing component in the entire semi-trailer structure. It needs to bear the weight of the vehicle body and the loaded cargo. Its welding quality directly determines the quality of the entire semi-trailer. Due to the structural requirements for use with a tractor, the longitudinal beam of a semi-trailer is generally a variable-section I-beam structure, that is, the shape of its web is not a regular rectangle, but a variable-section section with a varying width. Accordingly, in order to fit the web, the lower wing plate will have a bent section.

[0003] In the prior art, there are generally the following methods for forming such variable cross-section I-beams:

[0004] 1. Use automated welding and forming equipment for one-time welding and forming. Specifically, the upper wing plate, the web plate and the lower wing plate are synchronously moved through the welding and forming equipment, and the lower wing plate is pressed online by the bending device on the welding and forming equipment to make the lower wing plate fit the web plate, and the welding is completed at the same time to form an I-beam. This method has a high degree of automation, but the I-beam is in a moving state during the welding and forming process, and the I-beam needs to be supported and guided by a roller, and a large pressing force is maintained (according to the structural requirements of the frame, the pressing force is at least 10 tons), which is very unfavorable for the long-term use of the equipment. At the same time, under the premise of maintaining sufficient pressing force, the driving force required for the longitudinal movement of the workpiece is large, which will lead to large overall energy consumption of the equipment and large wear of the transmission components. In addition, due to the large length of the semi-trailer frame, the I-beam is prone to flexible deformation and precision deviation during the assembly and forming welding process, and this method can only weld the weld on one side of the I-beam first, and the weld on the other side of the I-beam needs to be subsequently repaired, which is still prone to welding deformation, affecting product quality.

[0005] Second, assemble the upper wing plate, web plate, and lower wing plate into an I-beam on the assembly table and spot weld them, and then enter the welding station for welding and forming. This forming method has more advantages in maintaining the production rhythm, and the I-beam is assembled and fixed before welding, which can better ensure the assembly size accuracy of the I-beam and control welding deformation. However, for variable-section I-beams, the lower wing plate needs to be pre-bent before assembly. It is difficult to realize automated loading and assembly on the assembly table. It is necessary to rely on manual handling of parts and assembly and positioning. It is highly dependent on the quality of personnel, and the product quality is greatly affected by manual labor. The product consistency is poor, and it consumes time, affecting production efficiency. Summary of the invention

[0006] The purpose of the present invention is to provide an I-beam assembly device and an I-beam manufacturing method, which are particularly suitable for the splicing of variable-section I-beams and improve the production efficiency and assembly accuracy of variable-section I-beams.

[0007] To solve the above technical problems, the present invention adopts the following technical solutions: an I-beam assembly device, used for assembling an upper wing plate, a web plate and a lower wing plate into an I-beam, wherein the I-beam has a fixed cross-section section and a variable cross-section section; the I-beam assembly device comprises: an assembly table, on which a web plate support surface and upper wing plate positioning grooves and lower wing plate placement grooves are arranged on both sides of the web plate support surface, for respectively and completely supporting the web plate, the upper wing plate and the lower wing plate in the length direction of the I-beam; a conveying mechanism, comprising a conveying roller that can be raised and lowered relative to the assembly table, for converting the web plate, the upper wing plate and the lower wing plate between being supported by the conveying roller and being supported by the assembly table; a positioning mechanism, arranged at the end of the length direction of the assembly table, for The web, upper wing and lower wing are positioned upward; the upper wing clamping mechanism is arranged corresponding to the upper wing support groove, and is used to position and fix the upper wing in the upper wing support groove; the straight section clamping mechanism is located on the outside of the lower wing placement groove, and is used to push the lower wing to move toward the upper wing, so that the lower wing, web and upper wing are spliced ​​to form a fixed section of the I-beam; the variable section pressing mechanism is located on the outside of the lower wing placement groove, and is arranged at intervals with the straight section pressing mechanism along the length direction of the assembly table; the variable section pressing mechanism can push the lower wing to move toward the upper wing at multiple positions along the length direction of the lower wing, and bend the lower wing to be consistent with the edge shape of the web, so that the lower wing, web and upper wing are spliced ​​to form a variable section of the I-beam.

[0008] Preferably, the assembly table is provided with a plurality of support plates spaced apart along its length direction, a support seat arranged on the support plate and close to one end of the support plate, and a stopper arranged on the outside of the support seat and opposite to the support seat; the upper surface of each support seat forms the web support surface, the space enclosed by the stopper, the support seat and the support plate constitutes the upper wing plate positioning groove, and the open space between the other side of the support seat and the support plate constitutes the lower wing plate placement groove.

[0009] Preferably, the stopper is detachably mounted.

[0010] Preferably, the conveying roller comprises a plurality of spaced conveying rollers; along the length direction of the assembling table, the plurality of conveying rollers and the plurality of support plates are arranged alternately.

[0011] Preferably, the conveying roller also includes a plurality of auxiliary rollers, each of which can be raised and lowered relative to the conveying roller; along the width direction of the assembly table, each of the auxiliary rollers is arranged corresponding to the support seat.

[0012] Preferably, the positioning mechanism includes an upper wing plate positioning block, a web plate positioning block and a lower wing plate positioning block, which are used to respectively stop one end of the upper wing plate, the web plate and the lower wing plate; the upper wing plate positioning block, the web plate positioning block and the lower wing plate positioning block are arranged in sequence from the inside to the outside along the length of the assembly table.

[0013] Preferably, the upper wing plate clamping mechanism includes: an upper wing plate Y-direction clamping member, including an upper wing plate Y-direction clamping block and an upper wing plate Y-direction clamping block driving member driving the upper wing plate Y-direction clamping block to move along the width direction of the assembly table; the upper wing plate Y-direction clamping block is opposite to a side wall of the upper wing plate positioning groove, and can clamp the upper wing plate between the upper wing plate Y-direction clamping block and the side wall of the upper wing plate positioning groove; an upper wing plate Z-direction clamping member, including an upper wing plate Z-direction clamping block and an upper wing plate Z-direction clamping block driving member driving the upper wing plate Z-direction clamping block to rise and fall; the upper wing plate Z-direction clamping block is located above the upper wing plate positioning groove, and can clamp the upper wing plate in the height direction.

[0014] Preferably, the upper wing plate Y-direction pressing members and the upper wing plate Z-direction pressing members are provided in multiple groups, which are arranged at intervals along the length direction of the assembly table.

[0015] Preferably, the straight segment pressing mechanism includes: a straight segment Y-direction pressing member, including a straight segment pressing block seat, a plurality of straight segment Y-direction pressing blocks arranged at intervals on the straight segment pressing block seat, and a straight segment Y-direction driving member driving the straight segment pressing block seat to move along the width direction of the assembly table; the straight segment pressing block seat extends along the length direction of the assembly table, and the straight segment Y-direction pressing block faces the lower wing plate placement groove.

[0016] Preferably, the straight segment clamping mechanism further comprises: a straight segment Z-direction clamping member, which is installed on the straight segment clamping block seat and can abut the lower wing plate from above the lower wing plate placement groove to clamp the lower wing plate in the height direction.

[0017] Preferably, the straight segment Z-direction clamping member includes: a straight segment Z-direction mounting seat, fixedly mounted on the straight segment pressure block seat; a straight segment Z-direction pressure block, rotatably mounted on the straight segment Z-direction mounting seat, and capable of approaching or moving away from the lower wing plate placement groove; a straight segment Z-direction pressure block driving member, mounted on the straight segment Z-direction mounting seat, connected to and driving the straight segment Z-direction pressure block to rotate.

[0018] Preferably, the variable-section segment profiling mechanism includes: a rolling member, including a roller seat and a roller rotatably mounted on the roller seat around a vertical axis, the roller facing the lower wing plate placement groove; a rolling member Y-axis driving member, connected to and driving the rolling member to move along the width direction of the assembly table so that the roller is in contact with and applies pressure to the lower wing plate; a rolling member X-axis driving member, connected to and driving the rolling member Y-axis driving member, for adjusting the position of the rolling member along the assembly length direction.

[0019] Preferably, there are two rollers, which are spaced apart on the roller seat; the roller seat is rotatably mounted on the output end of the Y-axis driving member of the rolling member; and the rotation axis of the roller seat is parallel to the rotation axis of the roller.

[0020] Preferably, the rotation axis of the roller seat and the rotation axes of the two rollers are arranged in an isosceles triangle, wherein the rotation axes of the two rollers correspond to two vertices of the base of the isosceles triangle.

[0021] Preferably, the variable cross-section profiled structure further comprises: a variable cross-section Z-direction pressing member, which is mounted on the roller seat and can abut the lower wing plate from above the lower wing plate placement groove to press the lower wing plate in the height direction.

[0022] Preferably, the I-beam assembly equipment further comprises: a web pressing mechanism, a plurality of which are spaced apart along the length direction of the assembly table, are arranged corresponding to the web supporting surface, and are capable of pressing the web in the height direction.

[0023] Preferably, the web pressing mechanism includes: a fixed seat, mounted on the assembly table and located on the outside of the upper wing plate positioning groove; a connecting rod, rotatably mounted on the fixed seat; a connecting rod driving member, mounted on the fixed seat, connected to and driving the connecting rod to rotate; a web pressing block, rotatably mounted on the connecting rod and located above the web supporting surface, and able to move downward to press the web as the connecting rod rotates.

[0024] According to another aspect of the present invention, the present invention further provides an I-beam manufacturing method, wherein the I-beam has a constant cross-section section and a variable cross-section section, and the I-beam manufacturing method comprises the steps of:

[0025] The upper wing plate in a formed state and the lower wing plate in a flat state are stacked on the horizontally placed web and conveyed to the assembly table together;

[0026] Adjust the position of the upper wing plate so that it is vertically located on one side of the web plate, and position and fix the upper wing plate on the assembly table;

[0027] The lower wing plate is adjusted to be located in a vertical position on the other side of the web plate, and starting from one end of the lower wing plate corresponding to the variable cross-section section, the lower wing plate is pushed to move toward the upper wing plate at multiple positions along the length direction of the lower wing plate, and the lower wing plate is bent to be consistent with the edge shape of the web plate, so that the lower wing plate, the web plate and the upper wing plate are spliced ​​to form the variable cross-section section of the I-beam, and the joints between the lower wing plate and the web plate and the joints between the web plate and the upper wing plate are spot welded;

[0028] Pushing the portion of the lower wing plate corresponding to the fixed cross-section segment toward the upper wing plate, so that the lower wing plate, the web plate and the upper wing plate are spliced ​​to form the fixed cross-section segment of the I-beam, and spot welding the joint between the lower wing plate and the web plate and the joint between the web plate and the upper wing plate;

[0029] The assembled I-beam is transferred from the assembly table to the welding station for welding.

[0030] Preferably, when the assembled I-beam is transported outward, the upper wing plate, the web plate and the lower wing plate of the I-beam are all supported and transported.

[0031] Preferably, before spot welding the joints between the lower wing plate and the web plate and the joints between the web plate and the upper wing plate, the lower wing plate is pressed simultaneously in the width direction and the height direction of the assembly table.

[0032] Preferably, in the step of forming the variable cross-section section of the I-beam, two rollers spaced apart along the length direction of the lower wing plate are used to contact and apply pressure to the surface of the lower wing plate to bend the lower wing plate to be consistent with the edge shape of the web plate.

[0033] It can be seen from the above technical scheme that the advantages and positive effects of the present invention are: in the I-beam assembly equipment of the present invention, the upper wing plate, the web plate and the lower wing plate are fully supported in the length direction, and are positioned and clamped by means of a positioning mechanism and a clamping mechanism to ensure the accuracy of the assembly of the upper wing plate, the web plate and the lower wing plate, and to ensure the subsequent welding quality; the conveying mechanism cooperates with the assembly table to realize automatic loading and unloading, and utilizes the straight section clamping mechanism and the variable section profiling mechanism to automatically complete the assembly of the fixed section section and the variable section section of the I-beam, thereby reducing the labor intensity of workers, reducing the degree of dependence on people, and improving production efficiency.

[0034] In the I-beam manufacturing method of the present invention, the upper wing plate, the web plate and the lower wing plate are first assembled and spot welded using an assembly table, and then transferred to a welding station to complete welding. During assembly, the lower wing plate in a flat state is stacked with the web plate and transferred to the assembly table, and then the lower wing plate is pressed online during assembly, which can better control the production rhythm and improve production efficiency, and ensure the assembly size accuracy of the I-beam and facilitate control of welding deformation. During assembly, the variable cross-section segment is assembled first, and then the straight segment is assembled, which is conducive to better controlling the overall assembly accuracy of the I-beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the assembling device of the present invention.

[0036] Figure 2 It is a schematic diagram of the top structure of a preferred embodiment of the assembling device of the present invention.

[0037] Figure 3 The present invention Figure 2 A partial enlarged schematic diagram in the middle.

[0038] Figure 4 It is a structural schematic diagram of the transmission mechanism in the preferred embodiment of the assembling equipment of the present invention.

[0039] Figure 5 The present invention Figure 4 A partial enlarged schematic diagram of point B in the middle.

[0040] Figure 6 It is a structural schematic diagram of the positioning mechanism in the preferred embodiment of the assembling equipment of the present invention.

[0041] Figure 7 It is a schematic diagram of the structure of the Y-direction pressing member of the upper wing plate in the preferred embodiment of the assembling equipment of the present invention.

[0042] Figure 8 It is a schematic diagram of the state when the upper wing plate is pressed by the Z-direction pressing member of the upper wing plate in the preferred embodiment of the assembling equipment of the present invention.

[0043] Fig. 9 It is a schematic structural diagram of the Z-direction pressing member of the upper wing plate in the preferred embodiment of the assembling equipment of the present invention.

[0044] Fig.10 It is a structural schematic diagram of the straight segment clamping mechanism in the preferred embodiment of the assembling equipment of the present invention.

[0045] Fig.11 The present invention Fig.10 A partial enlarged schematic diagram of point C in the middle.

[0046] Fig.12 It is a structural schematic diagram of the variable cross-section segment pressing mechanism in the preferred embodiment of the assembling equipment of the present invention.

[0047] Fig.13 It is a schematic diagram of the structure of the rolling parts in the preferred embodiment of the assembling equipment of the present invention.

[0048] Fig.14 It is a structural schematic diagram of the web pressing mechanism in the preferred embodiment of the assembling equipment of the present invention.

[0049] Fig.15 It is a schematic flow chart of a preferred embodiment of the method for manufacturing an I-beam of the present invention.

[0050] The following are the descriptions of the reference numerals:

[0051] 1. Assembly table; 11. Support plate; 12. Support seat; 13. Stopper;

[0052] 2. Conveying mechanism; 21. Roller seat; 22. Conveying roller; 221. Conveying roller; 222. Auxiliary roller; 223. Roller driving member; 23. Power driving member;

[0053] 3. Positioning mechanism; 31. Upper wing plate positioning block; 32. Web plate positioning block; 33. Lower wing plate positioning block;

[0054] 4. Upper wing plate clamping mechanism; 41. Upper wing plate Y-direction clamping member; 411. Upper wing plate Y-direction clamping block; 412. Upper wing plate Y-direction clamping block driving member; 42. Upper wing plate Z-direction clamping member; 421. Upper wing plate Z-direction clamping block; 422. Upper wing plate Z-direction clamping block driving member;

[0055] 5. Straight segment clamping mechanism; 51. Straight segment Y-direction clamping member; 511. Straight segment pressure block seat; 512. Straight segment Y-direction pressure block; 513. Straight segment Y-direction driving member; 52. Straight segment Z-direction clamping member; 521. Straight segment Z-direction pressure block; 522. Straight segment Z-direction pressure block driving member; 523. Straight segment Z-direction mounting seat;

[0056] 6. Variable cross-section profiling mechanism; 61. rolling element; 611. roller seat; 612. roller; 613. variable cross-section Z-direction mounting seat; 62. rolling element Y-direction driving element; 63. rolling element X-direction driving element; 64. variable cross-section Z-direction pressing element;

[0057] 7. Web plate clamping mechanism; 71. Fixed seat; 72. Connecting rod; 73. Web plate pressing block; 74. Connecting rod driving member;

[0058] 901, upper wing plate; 902, belly plate; 903, lower wing plate. DETAILED DESCRIPTION

[0059] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially used for illustration purposes rather than for limiting the present invention.

[0060] The present invention relates to an I-beam assembly device (hereinafter referred to as the assembly device), which is used to assemble an upper wing plate, a web plate and a lower wing plate in a steel plate state into a variable-section I-beam. The variable-section I-beam has a fixed-section section and a variable-section section, and is particularly suitable for being used as a longitudinal beam of a semitrailer frame of a straight-back frame vehicle, a small gooseneck frame vehicle, a straight-back flat-bar warehouse and a gooseneck flat-bar warehouse.

[0061] See also Figure 1 and Figure 2 In a preferred embodiment, the assembly equipment mainly includes an assembly table 1, a conveying mechanism 2, a positioning mechanism 3, an upper wing plate clamping mechanism 4, a straight section clamping mechanism 5, a variable cross-section section pressing mechanism 6 and a web clamping mechanism 7.

[0062] See also Figure 2 For ease of description, this paper sets the vertical direction as the Z direction, the direction in the horizontal plane parallel to the length direction of the I-beam (also the length direction of the assembly table 1) as the X direction, and the direction in the horizontal plane perpendicular to the X direction as the Y direction.

[0063] The assembly table 1 provides a support surface and can fully support the upper wing plate 901, the web plate 902, and the lower wing plate 903 in the X direction to facilitate the assembly of the three. During assembly, the web plate 902 is supported on the assembly table 1 in a horizontal state, and the upper wing plate 901 and the lower wing plate 903 are supported on the assembly table 1 in a vertical state.

[0064] Specifically, see Figure 2 and Figure 3 The base of the assembly table 1 (not numbered in the figure) can be assembled from profiles. The assembly table 1 has a plurality of support plates 11 arranged at intervals along the X direction, a support seat 12 arranged on the support plate 11 and close to one end of the support plate 11, and a stopper 13 arranged on the outside of the support seat 12 and opposite to the support seat 12.

[0065] The support plate 11 and the support seat 12 both extend in the Y direction. The length of the support seat 12 is less than the length of the support plate 11. The upper surface of each support seat 12 forms a web support surface for supporting the web 902. The length of each support seat 12 is adapted to the width of the web 902, that is, corresponding to the fixed cross-sectional section of the web 902 (as shown in FIG. Figure 2 The lengths of the support seats 12 are substantially the same; corresponding to the variable cross-section section of the web 902 (such as Figure 2 The supporting seats 12 have different lengths accordingly.

[0066] The space enclosed by the stopper 13, the support seat 12 and the support plate 11 constitutes an upper wing plate positioning groove for supporting the upper wing plate 901, and the interval between the stopper 13 and the support seat 12 is greater than the thickness of the upper wing plate 901. The open space between the outer side of the other end of the support seat 12 and the support plate 11 forms a lower wing plate placement groove for placing the lower wing plate 903. The lower ends of the upper wing plate 901 and the lower wing plate 903 are both supported by the support plate 11, ensuring the consistency of the Z-direction positions of the upper wing plate 901, the lower wing plate 903 and the web 902 when assembled.

[0067] Each stopper 13 is used as a Y-axis positioning reference when assembling the I-beam. Preferably, each stopper 13 is detachably mounted on the assembly platform 1. For example, the stopper 13 is mounted on the base of the assembly platform 1 by bolts. When the upper wing plate 901 is a straight plate (i.e., the I-beam is suitable for a straight-back semi-trailer frame), each stopper 13 is arranged in a straight line. When the end of the upper wing plate 901 has a bent section (i.e., the I-beam is suitable for a gooseneck semi-trailer frame), the position of the stopper 13 corresponding to the bent section can be adjusted to adapt to the shape of the upper wing plate 901.

[0068] See also Figure 4 and Figure 5 The conveying mechanism 2 includes a roller seat 21 and a conveying roller 22 mounted on the roller seat 21. The roller seat 21 can be raised and lowered by a power driving member 23 such as a cylinder, and the conveying roller 22 includes a plurality of conveying rollers 221 and a plurality of auxiliary rollers 222 arranged at intervals along the X direction.

[0069] The length of the transmission roller 221 is roughly equivalent to the width of the roller seat 21, and the height of the transmission roller 221 relative to the roller seat 21 is not adjustable. The auxiliary roller 222 is a single small wheel structure, and the auxiliary roller 222 is driven by the roller driving member 223 to be raised and lowered relative to the roller seat 21. The installation position of each auxiliary roller 222 on the roller seat 21 is close to one side of the roller seat 21.

[0070] See also Figures 1 to 5 , the conveying mechanism 2 and the assembly platform 1 are arranged correspondingly, the conveying mechanism 2 is roughly located within the range of the assembly platform 1, the roller seat 21 is located below the support plate 11 of the assembly platform 1, and in the X direction, the conveying rollers 221 and the support plates 11 are arranged alternately, and each conveying roller 221 is located in the interval between the two support plates 11. The roller seat 21 is driven by the power drive 23 to rise and fall, and the conveying roller 221 can rise to a height exceeding the support seat 12, or fall to a height below the support plate 11, so that the web 902, the upper wing plate 901 and the lower wing plate 903 can be switched between being supported by the conveying roller 221 or being supported by the assembly platform 1. In the Y direction, the position of the auxiliary roller 222 corresponds to the support seat 12. After the I-beam is assembled, the upper wing plate 901 and the lower wing plate 903 are supported by the conveying roller 221, and the auxiliary roller 222 rises a distance relative to the conveying roller 221 to support the web 902, so that the conveying is more stable.

[0071] See also Figure 1 and Figure 6The positioning mechanism 3 positions the upper wing plate 901, the web plate 902 and the lower wing plate 903 in the X direction, and positioning blocks are respectively arranged at both ends of the X direction to position and fix the upper wing plate 901, the web plate 902 and the lower wing plate 903. Among them, at one end corresponding to the variable cross-section section of the I-beam, the positioning mechanism 3 includes an upper wing plate positioning block 31, a web plate positioning block 32 and a lower wing plate positioning block 33, so as to respectively stop the end portions of the upper wing plate 901, the web plate 902 and the lower wing plate 903; the upper wing plate positioning block 31, the web plate positioning block 32 and the lower wing plate positioning block 33 are arranged in sequence from the inside to the outside along the X direction, so that the spliced ​​I-beam has a Z-shaped fracture shape at this end, which can facilitate the positioning of the I-beam when it is spliced ​​with another I-beam in sections, and there will be no stress concentration phenomenon at the splicing point, thereby improving the strength of the splicing point.

[0072] See also Figure 3 , Figures 7 to 9 The upper wing plate clamping mechanism 4 is arranged corresponding to the upper wing plate support groove, and is used to position and fix the upper wing plate 901 in the upper wing plate support groove. When the I-beam is assembled, the upper wing plate 901 constitutes the positioning reference in the Y direction. The upper wing plate clamping mechanism 4 includes an upper wing plate Y-direction clamping member 41 and an upper wing plate Z-direction clamping member 42, which respectively clamp the upper wing plate 901 in the Y direction and the Z direction.

[0073] The upper wing plate Y-direction pressing member 41 includes an upper wing plate Y-direction pressing block 411 and an upper wing plate Y-direction pressing block driving member 412 for driving the upper wing plate Y-direction pressing block 411 to move along the Y-direction. The upper wing plate Y-direction pressing member 41 has multiple groups, which are spaced apart along the X-direction and are located between two adjacent support plates 11 of the assembly table 1. In the Z-direction, the upper wing plate Y-direction pressing block 411 extends upward beyond the support plate 11 but is lower than the support seat 12. When the upper wing plate 901 is placed in the upper wing plate positioning groove, the upper wing plate Y-direction pressing block 411 moves along the Y-direction toward the stopper 13, and can press the upper wing plate 901 between the end face of the upper wing plate Y-direction pressing block 411 and the surface of the stopper 13.

[0074] The upper wing plate Z-direction pressing member 42 includes an upper wing plate Z-direction pressing block 421 and an upper wing plate Z-direction pressing block driving member 422 for driving the upper wing plate Z-direction pressing block 421 to rise and fall. The upper wing plate Z-direction pressing member 42 also has multiple groups, which are spaced apart along the X direction and are located outside the upper wing plate positioning groove, and can be roughly installed between two adjacent stoppers 13 on the assembly table 1. The upper wing plate Z-direction pressing block 421 protrudes upward in the Y direction to the upper part of the upper wing plate positioning groove, and under the drive of the upper wing plate Z-direction pressing block driving member 422, it can move from top to bottom to abut against the upper edge of the upper wing plate 901, and press the upper wing plate 901 in the Z direction.

[0075] See also Figure 2 , Fig.10 and Fig.11The straight section clamping mechanism 5 is located on the outer side of the lower wing plate placement groove of the assembly table 1, corresponding to the fixed cross-section section of the I-beam, and is used to push the lower wing plate 903 to move toward the upper wing plate 901, so that the lower wing plate 903, the web plate 902 and the upper wing plate 901 are spliced ​​to form the fixed cross-section section of the I-beam.

[0076] The straight segment pressing mechanism 5 includes a straight segment Y-direction pressing member 51, which is used to push the fixed cross-section segment of the lower wing plate 903 to move along the Y direction as a whole. Further, the straight segment pressing mechanism 5 also includes a plurality of straight segment Z-direction pressing members 52 arranged on the straight segment Y-direction pressing member 51, so as to simultaneously realize the pressing of the lower wing plate 903 in the Z direction.

[0077] The straight segment Y-direction pressing member 51 includes a straight segment pressing block seat 511, a plurality of straight segment Y-direction pressing blocks 512 arranged at intervals on the straight segment pressing block seat 511, and a straight segment Y-direction driving member 513 driving the straight segment pressing block seat 511 to move along the Y-direction. The straight segment pressing block seat 511 has a certain length and extends along the X-direction. In the structure shown in the figure, the straight segment pressing block seat 511 is driven by two straight segment Y-direction driving members 513 and can move along the Y-direction. The straight segment Y-direction pressing blocks 512 face the lower wing plate placement groove, and the plurality of straight segment Y-direction pressing blocks 512 move synchronously with the straight segment pressing block seat 511, and push the straight segment of the lower wing plate 903 as a whole to move toward the upper wing plate 901 to complete the splicing, thereby ensuring the straightness of the straight segment of the I-beam.

[0078] The straight segment Z-direction pressing member 52 includes a straight segment Z-direction mounting seat 523, a straight segment Z-direction pressing block 521 rotatably mounted on the straight segment Z-direction mounting seat 523, and a straight segment Z-direction pressing block driving member 522 connected to and driving the straight segment Z-direction pressing block 521 to rotate. The straight segment Z-direction pressing block driving member 522 is mounted on the straight segment Z-direction mounting seat 523, and the straight segment Z-direction mounting seat 523 is mounted on the straight segment pressing block seat 511. The straight segment Z-direction pressing block 521 exceeds the straight segment pressing block seat 511 in the Y direction and is located above the lower wing plate placement slot. Fig.11 As a reference to the viewing direction, when the straight segment Z direction pressing block 521 rotates counterclockwise, it approaches the lower wing plate placement groove, and can abut the lower wing plate 903 from above the lower wing plate placement groove, and press the lower wing plate 903 in the Z direction. When the straight segment Z direction pressing block 521 rotates clockwise, it moves away from the lower wing plate placement groove, and the pressing of the lower wing plate 903 is released.

[0079] See also Figure 2 , Fig.12 and Fig.13The variable-section pressing mechanism 6 is also located on the outside of the lower wing plate placement groove of the assembly table 1, and is spaced apart from the straight section pressing mechanism 5 in the X direction; the variable-section pressing mechanism 6 can push the lower wing plate 903 to move toward the upper wing plate 901 at multiple positions along the length direction of the lower wing plate 903, and bend the lower wing plate 903 to be consistent with the edge shape of the web 902, so that the lower wing plate 903, the web 902 and the upper wing plate 901 are spliced ​​to form a variable-section section of the I-beam.

[0080] The variable cross-section profiling mechanism 6 includes a rolling member 61, a rolling member Y-direction driving member 62 connected to and driving the rolling member 61 to move along the Y direction, and a rolling member X-direction driving member 63 connected to and driving the rolling member Y-direction driving member 62 to move along the X direction.

[0081] The rolling member X-direction driving member 63 is arranged along the X-direction, and drives the rolling member Y-direction driving member 62 to drive the rolling member 61 to move along the X-direction, thereby adjusting the position of the rolling member 61 in the X-direction.

[0082] The rolling member Y-direction driving member 62 is arranged along the Y direction, and drives the rolling member 61 to move along the Y direction, so that the rolling member 61 is attached to and pressurized on the lower wing plate 903 .

[0083] The rolling member 61 includes a roller seat 611 and two rollers 612 rotatably mounted on the roller seat 611 and arranged at intervals. The roller seat 611 is rotatably mounted on the output end of the rolling member Y-direction driving member 62, and the rotation axis L1 of the roller seat 611 is parallel to the rotation axis L2 of the roller 612, and both extend along the Z direction. The rotation axes L2 of the two rollers 612 plus the rotation axis L1 of the roller seat 611 are arranged in an isosceles triangle, wherein the rotation axes L2 of the two rollers 612 correspond to the two vertices of the base of the isosceles triangle.

[0084] The two rollers 612 face the lower wing plate placement groove, contact the lower wing plate 903 and apply pressure to the lower wing plate 903. The two rollers 612 contact the lower wing plate 903 over a larger area, so that the lower wing plate 903 is evenly stressed and pressed to better fit the shape of the web 902, and the stress condition of the rolling member Y-direction driving member 62 can be improved. At the same time, since the roller seat 611 is rotatable, the roller seat 611 can rotate to adapt to the shape of the lower wing plate 903, so that the two rollers 612 are always in contact with the lower wing plate 903, and the excellent pressing effect is always maintained.

[0085] The variable section pressing mechanism 6 further includes a variable section Z-direction pressing member 64 to press the lower wing plate 903 from the Z direction. The variable section Z-direction pressing member 64 is mounted on the roller seat 611 and extends beyond the roller 612 in the Y direction, and can abut and press the lower wing plate 903 from above the lower wing plate placement groove. In this embodiment, the variable section Z-direction pressing member 64 is a cylinder push rod, and the end of the push rod can abut and press the lower wing plate 903 when it moves downward. The upper surface of the roller seat 611 is provided with a variable section Z-direction mounting seat 613 for mounting the variable section Z-direction pressing member 64.

[0086] The above-mentioned upper wing plate Y-direction pressure block driving member 412, upper wing plate Z-direction pressure block driving member 422, straight segment Y-direction driving member 513, straight segment Z-direction pressure block driving member 522, rolling member X-direction driving member 63 and rolling member Y-direction driving member 62 all provide driving force for linear motion, and can be respectively composed of structural members such as cylinders and hydraulic cylinders.

[0087] The movements of the upper wing plate Y-direction pressing block 411, the straight section pressing block seat 511, and the rolling member Y-direction driving member 62 are all linear movements, and their respective movements can be guided by corresponding guide rails to make the movement more stable.

[0088] See also Figure 1 and Fig.14 The web pressing mechanism 7 is used to press the web 902 in the Z direction. In the X direction, multiple groups of web pressing mechanisms 7 are arranged at intervals.

[0089] Each web pressing mechanism 7 includes a fixed seat 71, a connecting rod 72 rotatably mounted on the fixed seat 71, a web pressing block 73 rotatably connected to the connecting rod 72, and a connecting rod driving member 74 connected to and driving the connecting rod 72 to rotate. The fixed seat 71 is mounted on the assembly table 1 and is located on the outside of the stopper 13 in the Y direction. The connecting rod 72 is arranged at an angle so that the web pressing block 73 protrudes above the support seat 12 (i.e., corresponding to the web supporting surface). When the connecting rod driving member 74 drives the connecting rod 72 to rotate, the web pressing block 73 can be moved downward to the web 902 and pressed against the web 902 in the Z direction. Since the web pressing block 73 is rotatable relative to the connecting rod 72, the web pressing block 73 can be kept in a horizontal state to fit against the web 902 for pressing, thereby maintaining the horizontality of the web 902.

[0090] Based on the above structure, the working process of the I-beam assembly equipment is roughly as follows:

[0091] The upper wing plate 901 and the lower wing plate 903 are horizontally stacked on the web plate 902 and received by the conveying roller 22 of the conveying mechanism 2 to the assembly device. Then the conveying roller 22 descends, so that the three parts are supported by the assembly table 1.

[0092] By manually adjusting the positions of the upper wing plate 901 and the lower wing plate 903, the two are placed in an upright state and enter the upper wing plate positioning groove and the lower wing plate placement groove respectively. They can be roughly put in place without manually adjusting the position accuracy.

[0093] The three parts are positioned and tightened in the X direction by the positioning mechanism 3.

[0094] The upper wing plate clamping mechanism 4 is actuated to position and fix the upper wing plate 901 in the upper wing plate supporting groove in the Y direction and the Z direction.

[0095] The variable-section profiling mechanism 6 is actuated to push the lower wing plate 903 from the end toward the upper wing plate 901, so that the lower wing plate 903 is pressed against the web 902, and the web 902 is driven to be pressed against the upper wing plate 901, and the pressed parts are fixed by spot welding by a welding machine; and then, at intervals in the X direction, the lower wing plate 903 is pushed again toward the upper wing plate 901, and the lower wing plate 903 is profiling to be consistent with the edge shape of the web 902, and after being fixed by spot welding, it is moved to the next position until the entire variable-section segment is spliced.

[0096] The straight section clamping mechanism 5 is actuated to push the lower wing plate 903 as a whole to move toward the upper wing plate 901, so that the straight section of the lower wing plate 903 is spliced ​​with the web plate 902 and the upper wing plate 901 to form a fixed cross-section section of the I-beam, which is also fixed by spot welding.

[0097] After the above assembly is completed, the positioning and clamping mechanisms are released, and the conveying roller 22 is raised to support the assembled I-beam, and then transported outward for subsequent processes.

[0098] Based on the above structure, the I-beam assembly equipment of this embodiment has at least the following advantages:

[0099] 1. The upper wing plate 901, the web plate 902 and the lower wing plate 903 are fully supported in the length direction by the assembly table 1, and the positioning mechanism and the clamping mechanisms are used for positioning and clamping to ensure the assembly accuracy of the I-beam; at the same time, the automatic loading and unloading of the conveying mechanism 2, the straight section clamping mechanism 5 and the variable section pressing mechanism 6 are used to realize the online forming of the lower wing plate 903, the equipment has a high degree of automation, and the production efficiency is improved.

[0100] 2. The assembly platform 1 uses the support plate 11, the support seat 12 and the stopper 13 as the Z-direction positioning reference and the Y-direction positioning reference for the assembly of the I-beam, thereby ensuring the accuracy of the I-beam in important dimensions and further ensuring the assembly accuracy of the I-beam. In addition, the stopper 13 adopts a detachable installation method, which can adapt to the positioning of different types of I-beams and improve the application range of the assembly equipment.

[0101] 3. The conveying mechanism 2 is equipped with an auxiliary roller 222 that can be raised and lowered independently. For the assembled I-beam, the auxiliary roller 222 is used to support and convey the web 902 of the I-beam, making the conveying more stable and effectively avoiding deformation of the assembled I-beam during the conveying process.

[0102] 4. The straight section pressing mechanism 5 and the variable cross-section section pressing mechanism 6 press the lower wing plate 903 in the Y direction and the Z direction simultaneously to ensure that the pressed shape of the lower wing plate 903 fits the web 902 more closely.

[0103] 5. The variable-section profiling mechanism 6 adopts a rolling member 61 with double rollers 612, and the rolling member 61 as a whole can rotate relative to the driving member. During the profiling process of the lower wing plate 903, the double rollers 612 can always fit the lower wing plate 903 and apply pressure, so that the lower wing plate 903 is evenly stressed, maintaining an excellent profiling effect and improving assembly accuracy.

[0104] The present invention also provides an I-beam manufacturing method, based on which the upper wing plate, the web plate and the lower wing plate are assembled on an assembly table to form a variable-section I-beam, and then transferred to a welding station for welding and forming. The assembly process can be achieved by the I-beam assembly equipment described above.

[0105] See also Figures 1 to 15 The manufacturing method of the present invention is specifically introduced below in combination with the structure of the I-beam assembly equipment. The manufacturing method mainly includes the following steps:

[0106] S10: Loading; specifically, stacking the upper wing plate in a formed state and the lower wing plate in a flat state on a horizontally placed web and transferring them to an assembly table together.

[0107] The upper wing plate in the formed state can be a flat plate as a whole, that is, when the I-beam is used as the longitudinal beam of the straight-back frame vehicle frame; or it can have a small bending section at the end, that is, when the I-beam is used as the longitudinal beam of the gooseneck semi-trailer frame.

[0108] Specifically, the upper wing plate 901, the lower wing plate 903 and the web plate 902 are transported from the loading station to the assembly equipment, received by the conveying roller 22 and conveyed to the appropriate position of the assembly table 1, and then the conveying roller 22 descends, and the upper wing plate 901, the lower wing plate 903 and the web plate 902 are fully supported by the assembly table 1 in the length direction.

[0109] S20: Positioning the upper wing plate; specifically, adjusting the position of the upper wing plate so that it is in a vertical state and located on one side of the web, and positioning and fixing the upper wing plate on the assembly table.

[0110] The upper wing plate 901 can be completely positioned and fixed in the X, Y, and Z directions by the positioning mechanism 3 and the upper wing plate clamping mechanism 4, and the upper wing plate 901 serves as the Y-direction reference when assembling the I-beam. In addition, the positioning mechanism 3 also positions the web plate 902 and the lower wing plate 903 in the X direction.

[0111] S30: Assembling the variable-section segment; specifically, adjusting the position of the lower wing plate so that it is in a vertical state and located on the other side of the web plate, and starting from one end of the lower wing plate corresponding to the variable-section segment, pushing the lower wing plate toward the upper wing plate at multiple positions along the length direction of the lower wing plate in sequence, and bending the lower wing plate to be consistent with the edge shape of the web plate, so that the lower wing plate, the web plate and the upper wing plate are spliced ​​to form the variable-section segment of the I-beam, and spot welding the seams between the lower wing plate and the web plate, and the seams between the web plate and the upper wing plate.

[0112] In step S30, the rolling member 61 with double rollers 612 applies pressure to the surface of the lower wing plate 903 to bend the lower wing plate. Starting from one end of the lower wing plate 903, the rolling member 61 applies pressure to make the lower wing plate 903 contact with the web 902, and further makes the web 902 abut against the upper wing plate 901, and spot welds the joints between the lower wing plate 903 and the web 902, and the joints between the web 902 and the upper wing plate 901. Then, along the length direction of the lower wing plate 903, the process of applying pressure and spot welding is repeated at intervals until the assembly of the variable cross-section section is completed.

[0113] S40: Assembling the fixed-section section; specifically, pushing the portion of the lower wing plate corresponding to the fixed-section section toward the upper wing plate, so that the lower wing plate, the web plate and the upper wing plate are spliced ​​to form the fixed-section section of the I-beam, and spot welding is performed on the joints between the lower wing plate and the web plate, and on the joints between the web plate and the upper wing plate.

[0114] Preferably, in the above steps S30 and S40, before spot welding, the lower wing plate is simultaneously pressed in the Y direction and the Z direction. In addition, the web is also preferably pressed in the Z direction.

[0115] S50: welding; specifically, the assembled I-beam is transferred from the assembly table to the welding station for welding.

[0116] The transmission of the I-beam is still completed by the transmission roller 22. Preferably, the auxiliary roller 222 of the transmission roller 22 is raised a certain distance relative to the transmission roller 221, so that while the transmission roller 221 supports the upper wing plate 901 and the lower wing plate 903, the auxiliary roller 222 just supports the web 902, making the transmission smoother.

[0117] Finally, when the I-beam is transferred to the welding station, the welding robot can be used to weld the seams on both sides of the I-beam.

[0118] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in a variety of forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An I-beam assembly device, used to assemble an upper wing plate, a web plate and a lower wing plate into an I-beam, wherein: The I-beam has a fixed cross-section section and a variable cross-section section; it is characterized in that the I-beam assembly equipment comprises: An assembly table is provided with a web support surface and upper wing plate positioning grooves and lower wing plate placement grooves arranged on both sides of the web support surface, and is used to fully support the web, upper wing plate and lower wing plate respectively and correspondingly in the length direction of the I-beam; A conveying mechanism, having a conveying roller that can be raised and lowered relative to the assembly table, and used to switch between the web plate, the upper wing plate and the lower wing plate being supported by the conveying roller or by the assembly table; A positioning mechanism, arranged at the end of the assembly table in the length direction, for positioning the web plate, the upper wing plate and the lower wing plate along the length direction of the assembly table; An upper wing plate pressing mechanism is provided corresponding to the upper wing plate positioning groove and is used to position and fix the upper wing plate in the upper wing plate positioning groove; A straight section pressing mechanism is located outside the lower wing plate placement groove and is used to push the lower wing plate to move toward the upper wing plate, so that the lower wing plate, the web plate and the upper wing plate are spliced ​​to form a fixed cross-section section of the I-beam; The variable-section profiling mechanism is located outside the lower wing plate placement groove and is arranged at intervals with the straight section pressing mechanism along the length direction of the assembly table; the variable-section profiling mechanism can push the lower wing plate to move toward the upper wing plate at multiple positions along the length direction of the lower wing plate, and bend the lower wing plate to be consistent with the edge shape of the web plate, so that the lower wing plate, the web plate and the upper wing plate are spliced ​​to form a variable-section section of the I-beam; The upper wing plate pressing mechanism comprises: The upper wing plate Y-direction pressing member comprises an upper wing plate Y-direction pressing block and an upper wing plate Y-direction pressing block driving member driving the upper wing plate Y-direction pressing block to move along the width direction of the assembly table; the upper wing plate Y-direction pressing block is opposite to a side wall of the upper wing plate positioning groove, and can press the upper wing plate between the upper wing plate Y-direction pressing block and the side wall of the upper wing plate positioning groove; The upper wing plate Z-direction pressing member comprises an upper wing plate Z-direction pressing block and an upper wing plate Z-direction pressing block driving member for driving the upper wing plate Z-direction pressing block to rise and fall; the upper wing plate Z-direction pressing block is located above the upper wing plate positioning groove and can press the upper wing plate in the height direction; The I-beam assembly equipment also includes: A web pressing mechanism, which is arranged in multiple groups at intervals along the length direction of the assembly platform, is set corresponding to the web supporting surface, and can press the web in the height direction; The web pressing mechanism comprises: A fixing seat, installed on the assembly platform and located outside the positioning groove of the upper wing plate; A connecting rod rotatably mounted on the fixing seat; A connecting rod driving member, mounted on the fixing seat, connected to and driving the connecting rod to rotate; The web pressing block is rotatably mounted on the connecting rod and is located above the web supporting surface. With the rotation of the connecting rod, the web pressing block can move downward to press the web.

2. The I-beam assembly equipment according to claim 1, characterized in that: The assembly table is provided with a plurality of support plates spaced apart along the length direction thereof, a support seat arranged on the support plate and close to one end of the support plate, and a stopper arranged on the outside of the support seat and opposite to the support seat; The upper surface of each support seat forms the web support surface, the space enclosed by the stopper, the support seat and the support plate constitutes the upper wing plate positioning groove, and the open space between the other side of the support seat and the support plate constitutes the lower wing plate placement groove.

3. The I-beam assembly equipment according to claim 2, characterized in that: The stopper is detachably mounted.

4. The I-beam assembly equipment according to claim 2, characterized in that: The conveying roller comprises a plurality of spaced conveying rollers; along the length direction of the assembling platform, the plurality of conveying rollers and the plurality of supporting plates are arranged alternately.

5. The I-beam assembly equipment according to claim 4, characterized in that: The conveying roller also includes a plurality of auxiliary rollers, each of which can be raised and lowered relative to the conveying roller; along the width direction of the assembly table, each of the auxiliary rollers is arranged corresponding to the support seat.

6. The I-beam assembly equipment according to claim 1, characterized in that: The positioning mechanism includes an upper wing plate positioning block, a web plate positioning block and a lower wing plate positioning block, which are used to respectively stop one end of the upper wing plate, the web plate and the lower wing plate; the upper wing plate positioning block, the web plate positioning block and the lower wing plate positioning block are arranged in sequence from the inside to the outside along the length of the assembly table.

7. The I-beam assembly equipment according to claim 1, characterized in that: The upper wing plate Y-direction pressing parts and the upper wing plate Z-direction pressing parts are provided with a plurality of groups, which are arranged at intervals along the length direction of the assembly platform.

8. The I-beam assembly equipment according to claim 1, characterized in that: The straight segment pressing mechanism comprises: The straight segment Y-direction clamping member includes a straight segment pressure block seat, a plurality of straight segment Y-direction pressure blocks arranged at intervals on the straight segment pressure block seat, and a straight segment Y-direction driving member driving the straight segment pressure block seat to move along the width direction of the assembly table; the straight segment pressure block seat extends along the length direction of the assembly table, and the straight segment Y-direction pressure block faces the lower wing plate placement groove.

9. The I-beam assembly equipment according to claim 8, characterized in that: The straight segment pressing mechanism also includes: The straight segment Z-direction pressing piece is installed on the straight segment pressing block seat and can abut the lower wing plate from above the lower wing plate placement groove to press the lower wing plate in the height direction.

10. The I-beam assembly equipment according to claim 9, characterized in that: The straight segment Z-direction pressing member comprises: A straight segment Z-direction mounting seat, fixedly mounted on the straight segment pressing block seat; A straight segment Z-direction pressing block is rotatably mounted on the straight segment Z-direction mounting seat and can be close to or away from the lower wing plate placement slot; The straight segment Z-direction pressing block driving component is installed on the straight segment Z-direction mounting seat, and is connected to and drives the straight segment Z-direction pressing block to rotate.

11. The I-beam assembly equipment according to claim 1, characterized in that: The variable cross-section segment pressing mechanism comprises: A rolling member, comprising a roller seat and a roller rotatably mounted on the roller seat around a vertical axis, wherein the roller faces the lower wing plate placement groove; A Y-direction driving member of the rolling member, connected to and driving the rolling member to move along the width direction of the assembly table, so that the roller is attached to and pressurized on the lower wing plate; The rolling member X-direction driving member is connected to and drives the rolling member Y-direction driving member to adjust the position of the rolling member along the assembly length direction.

12. The I-beam assembly equipment according to claim 11, characterized in that: There are two rollers, which are arranged at intervals on the roller seat; the roller seat is rotatably mounted on the output end of the Y-axis driving member of the rolling member; the rotation axis of the roller seat is parallel to the rotation axis of the roller.

13. The I-beam assembly equipment according to claim 12, characterized in that: The rotation axis of the roller seat and the rotation axes of the two rollers are arranged in an isosceles triangle, wherein the rotation axes of the two rollers correspond to the two vertices of the base of the isosceles triangle.

14. The I-beam assembly equipment according to claim 11, characterized in that: The variable cross-section profile structure also includes: The variable cross-section Z-direction pressing member is installed on the roller seat and can abut the lower wing plate from above the lower wing plate placement groove to press the lower wing plate in the height direction.

15. A method for manufacturing an I-beam, wherein: The I-beam has a fixed cross-section section and a variable cross-section section, and is characterized in that the I-beam manufacturing method comprises the steps of: The upper wing plate in a formed state and the lower wing plate in a flat state are stacked on the horizontally placed web and conveyed to the assembly table together; Adjust the position of the upper wing plate so that it is vertically located on one side of the web, and position and fix the upper wing plate on the assembly table; The lower wing plate is adjusted to be located in a vertical position on the other side of the web plate, and starting from one end of the lower wing plate corresponding to the variable cross-section section, the lower wing plate is pushed to move toward the upper wing plate at multiple positions along the length direction of the lower wing plate, and the lower wing plate is bent to be consistent with the edge shape of the web plate, so that the lower wing plate, the web plate and the upper wing plate are spliced ​​to form the variable cross-section section of the I-beam, and the joints between the lower wing plate and the web plate and the joints between the web plate and the upper wing plate are spot welded; Pushing the portion of the lower wing plate corresponding to the fixed cross-section segment toward the upper wing plate, so that the lower wing plate, the web plate and the upper wing plate are spliced ​​to form the fixed cross-section segment of the I-beam, and spot welding the joint between the lower wing plate and the web plate and the joint between the web plate and the upper wing plate; The assembled I-beam is transferred from the assembly table to the welding station for welding.

16. The method for manufacturing an I-beam according to claim 15, characterized in that: When the assembled I-beam is transported outward, the upper wing plate, the web plate and the lower wing plate of the I-beam are supported and transported.

17. The method for manufacturing an I-beam according to claim 15, characterized in that: Before spot welding the joints between the lower wing plate and the web plate and the joints between the web plate and the upper wing plate, the lower wing plate is pressed simultaneously in the width direction and the height direction of the assembly table.

18. The method for manufacturing an I-beam according to claim 15, characterized in that: In the step of forming the variable cross-section section of the I-beam, two rollers spaced apart along the length direction of the lower wing plate are used to contact and apply pressure to the surface of the lower wing plate, so as to bend the lower wing plate to be consistent with the edge shape of the web plate.

Images