U-shaped beam shaping tooling and shaping method

Abstract

The present invention discloses a U-shaped beam shaping tooling and a shaping method. The U-shaped beam shaping tooling includes a machine base, a lower die and an upper die. The lower die includes a lower die base installed on the machine base. The lower die base is provided with a limiting groove for limiting and installing the U-shaped beam so that the notch of the U-shaped beam faces upward. The upper die includes an upper die base movably installed on the machine base in the up-and-down direction and located above the lower die base, a pressing part arranged below the upper die base and movable in the up-and-down direction, and a shaping component arranged on the upper die base. The shaping component includes two shaping blocks separately arranged on both sides of the pressing part in the left-and-right direction. Both shaping blocks have shaping surfaces extending in the front-and-back direction and adjacent to the pressing part. Each shaping surface gradually deviates from the pressing part from top to bottom. The pressing part presses the U-shaped beam in the limiting groove. The upper die base moves downward, so that the two shaping surfaces are abutted against the two side arms of the U-shaped beam, and the two side arms of the U-shaped beam are close to each other to achieve shaping. The structure is simple, the input cost is low, the debugging period is short, and the production efficiency is high.

Description

Technical Field

[0001] The present invention relates to the technical field of U-shaped beam shaping, and particularly to a U-shaped beam shaping tooling and a shaping method. Background Art

[0002] The U-shaped beam is a common part in the automotive industry and the machinery industry. With the advancement of lightweighting, the strength grade of the part material is continuously improved, and the springback of the U-shaped beam is also increasing. For the U-shaped beam parts, they usually need to be shaped by shaping tooling after being manufactured. The existing shaping tooling has complex structure, high input cost, long debugging and rectification cycle, and low production efficiency. Summary of the Invention

[0003] The main object of the present invention is to propose a U-shaped beam shaping tooling and a shaping method, aiming to solve the problems of complex structure, high input cost, long debugging and rectification cycle, and low production efficiency of the existing shaping tooling.

[0004] To achieve the above object, the U-shaped beam shaping tooling proposed by the present invention includes:

[0005] A machine base;

[0006] A lower die, including a lower die base fixedly installed on the machine base, and a limiting groove extending in the front-rear direction is arranged on the upper end surface of the lower die base. The limiting groove is used for limiting and installing the U-shaped beam so that the notch of the U-shaped beam faces upward; and,

[0007] An upper die, including an upper die base movably installed on the machine base in the up-down direction and located above the lower die base, a pressing part arranged below the upper die base and movably installed on the upper die base in the up-down direction, and a shaping component arranged on the upper die base. The shaping component includes two shaping blocks respectively arranged on both sides of the pressing part in the left-right direction. Both shaping blocks have shaping surfaces extending in the front-rear direction and adjacent to the pressing part. Each shaping surface gradually deviates from the pressing part from top to bottom;

[0008] Wherein, the pressing part moves downward to extend into the groove of the U-shaped beam to press the U-shaped beam in the limiting groove, and the upper die base moves downward to drive the shaping component to move downward, so that the two shaping surfaces are abutted against the two side arms of the U-shaped beam.

[0009] Optionally, an included angle σ is formed between the shaping surface and the vertical plane, wherein, 5° ≤ σ ≤ 10°.

[0010] Optionally, it further includes a limiting abutting part. The limiting abutting part extends in the up-down direction. The lower end of the limiting abutting part is installed on the lower die base, and the upper end is used for abutting against the upper die base to limit the downward movement stroke of the upper die base.

[0011] Optionally, the distance between the upper end and the lower end of the limiting abutting portion is adjustable.

[0012] Optionally, the connection between the lower end surface of each shaping block and the shaping surface is provided with an arc transition.

[0013] Optionally, the pressing portion is connected to the upper die base through a linear driving assembly.

[0014] Optionally, the linear driving assembly includes a cylinder or an electric push rod.

[0015] Optionally, a guiding assembly is arranged between the lower die base and the upper template. The guiding assembly includes a guiding column extending in the up-and-down direction and a guiding cylinder adapted to the guiding column. Among the guiding column and the guiding cylinder, one is arranged on the upper template and the other is arranged on the lower die base; and / or,

[0016] The U-shaped beam shaping tooling further includes a lifting driving assembly. The lifting driving mechanism is installed between the upper die base and the lower die base to drive the upper die base to move in the up-and-down direction; and / or,

[0017] Both of the two shaping blocks are detachably connected to the upper die base.

[0018] To achieve the above object, the present invention provides a U-shaped beam shaping method based on the U-shaped beam shaping tooling as described above. The U-shaped beam shaping method includes the following steps:

[0019] Place the U-shaped beam in the limiting groove so that the notch of the U-shaped beam faces upward;

[0020] Make the pressing portion move downward to extend into the groove of the U-shaped beam and press the U-shaped beam in the limiting groove;

[0021] Make the upper die base move downward to drive the shaping assembly to move downward so that the two shaping surfaces abut against the two side arms of the U-shaped beam;

[0022] Make the upper die base move upward to drive the shaping assembly to move upward so that the two shaping surfaces are separated from the two side arms of the U-shaped beam;

[0023] Make the pressing portion move upward to separate from the U-shaped beam.

[0024] Optionally, the U-shaped beam shaping tooling further includes a limiting abutting portion, which extends in the up-down direction. The lower end of the limiting abutting portion is installed on the lower die base, and the upper end is used to abut against the upper die base to limit the downward movement stroke of the upper die base. The distance between the upper end and the lower end of the limiting abutting portion is adjustable. Before the step of "placing the U-shaped beam in the limiting groove with the notch of the U-shaped beam facing upward", the following steps are also included;

[0025] Adjust the distance between the upper end and the lower end of the limiting abutting portion.

[0026] In the technical solution provided by the present invention, when the U-shaped beam needs to be shaped, the U-shaped beam is placed in the limiting groove with the notch of the U-shaped beam facing upward, so that the pressing portion moves downward to extend into the groove of the U-shaped beam to press the U-shaped beam in the limiting groove, and the upper die base moves downward to drive the shaping assembly to move downward, so that the two shaping surfaces abut against the two side arms of the U-shaped beam. During the downward movement of the upper die base, the two shaping surfaces apply pressure to the two side arms of the U-shaped beam, so that the two side arms of the U-shaped beam approach each other to meet the theoretical tolerance requirements of the U-shaped beam. The structure is simple, the input cost is low, the debugging and rectification period is short, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0028] Figure 1 FIG. 15 is a schematic three-dimensional structure diagram of an embodiment of the U-shaped beam shaping tooling provided by the present invention;

[0029] Figure 2 FIG. Figure 1 16 is a left view schematic diagram of the U-shaped beam shaping tooling in FIG. 15;

[0030] Figure 3 FIG. Figure 1 17 is a front view structural schematic diagram of the U-shaped beam shaping tooling in FIG. 15;

[0031] Figure 4 FIG. Figure 1 18 is a structural schematic diagram of the U-shaped beam shaping tooling in FIG. 15 during the shaping work;

[0032] Figure 5 FIG. 19 is a structural schematic diagram of the U-shaped beam.

[0033] Explanation of the reference numerals in the drawings:

[0034]

[0035]

[0036] The realization, functional features and advantages of the present invention will be further described in conjunction with embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0037] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0040] The U-shaped beam is a common part in the automotive industry and the machinery industry. With the advancement of the lightweight level, the strength grade of the part material is continuously improved, and the springback of the U-shaped beam is also increasing. For the U-shaped beam parts, they usually need to be shaped by a shaping tooling after being manufactured. The existing shaping tooling has a complex structure, high input cost, long debugging and rectification cycle, and low production efficiency.

[0041] In view of this, the present invention provides a U-shaped beam shaping tooling and a shaping method, wherein, Figures 1 to 4 It is a schematic structural diagram of an embodiment of the U-shaped beam shaping tooling provided by the present invention.

[0042] Please refer toFigures 1 to 4 , the U-shaped beam shaping tooling 100 includes a machine base 1, a lower die 2 and an upper die 3. The lower die 2 includes a lower die base 21 fixedly installed on the machine base 1. A limiting groove 211 extending in the front-rear direction is provided on the upper end surface of the lower die base 21. The limiting groove 211 is used for the U-shaped beam 200 (refer to Figure 5 ) to be installed in a limited manner, so that the notch 201 of the U-shaped beam 200 faces upward. The upper die 3 includes an upper die base 31 movably installed on the machine base 1 in the up-down direction and located above the lower die base 21, a pressing part 32 arranged below the upper die base 31 and movably installed on the upper die base 31 in the up-down direction, and a shaping component 33 arranged on the upper die base 31. The shaping component 33 includes two shaping blocks 331 separately arranged on both sides of the pressing part 32 in the left-right direction. Both of the two shaping blocks 331 have a shaping surface a extending in the front-rear direction and adjacent to the pressing part 32. Each shaping surface a gradually deviates from the pressing part 32 from top to bottom. Wherein, the pressing part 32 moves downward to extend into the groove of the U-shaped beam 200 to press the U-shaped beam 200 in the limiting groove 211. The upper die base 31 moves downward, driving the shaping component 33 to move downward, so that the two shaping surfaces a are in contact with the two side arms 202 of the U-shaped beam 200.

[0043] In the technical solution provided by the present invention, when the U-shaped beam 200 needs to be shaped, the U-shaped beam 200 is placed in the limiting groove 211, so that the notch 201 of the U-shaped beam 200 faces upward, the pressing part 32 moves downward to extend into the groove of the U-shaped beam 200 to press the U-shaped beam 200 in the limiting groove 211, the upper die base 31 moves downward, driving the shaping component 33 to move downward, so that the two shaping surfaces a are in contact with the two side arms 202 of the U-shaped beam 200. During the downward movement of the upper die base 31, the two shaping surfaces a apply pressure to the two side arms 202 of the U-shaped beam 200, so that the two side arms 202 of the U-shaped beam 200 approach each other to meet the theoretical tolerance requirements of the U-shaped beam 200. The structure is simple, the input cost is low, the debugging and rectification cycle is short, and the production efficiency is high.

[0044] Specifically, refer to Figure 3 , an included angle σ is formed between the shaping surface a and the vertical surface, where 5°≤σ≤10°. With such a setting, it can not only guide the two side arms 202 of the U-shaped beam 200 to slide into the shaping space b formed between the two shaping blocks 331, and refer to Figure 1 , since the width of the shaping space b gradually decreases from top to bottom, when the upper die base 31 moves downward, the two shaping surfaces a apply pressure to the two side arms 202 of the U-shaped beam 200, so that the two side arms 202 of the U-shaped beam 200 approach each other to realize shaping.

[0045] It should be noted that the present application does not limit the range of the included angle formed between the shaping surface a and the vertical surface. In other embodiments, the range of the included angle formed between the shaping surface a and the vertical surface may also be 10° to 30°, etc., and the specific included angle can be selected according to needs.

[0046] To prevent the upper die base 31 from moving downward too far and damaging the side arm 202 of the U-shaped beam 200, referring to Figure 1 , the U-shaped beam shaping tooling 100 further includes a limit abutting portion 4. The limit abutting portion 4 extends in the up and down direction. The lower end of the limit abutting portion 4 is installed on the lower die base 21, and the upper end of the limit abutting portion 4 is used to abut against the upper die base 31 to limit the downward movement stroke of the upper die base 31, so that the upper die base 31 is not damaged during the downward movement stroke, and the effect is good.

[0047] Considering that U-shaped beams 200 of different sizes need to be shaped, the distances between the two side arms 202 of U-shaped beams 200 of different sizes are different. Referring to Figure 3 , since the width of the shaping space b formed between the two shaping blocks 331 gradually decreases from bottom to top, by making the distance between the upper end and the lower end of the limit abutting portion 4 adjustable, the length of the limit abutting portion 4 can be adjusted as needed, and the downward movement stroke of the upper die base 31 can be adjusted, so that the ends of the two side arms 202 of the U-shaped beam 200 abut against the inner walls of the shaping space b with corresponding widths, thereby realizing the springback shaping of the side walls, with a simple structure and good effect.

[0048] Specifically, there are various ways to make the distance between the upper end and the lower end of the limit abutting portion 4 adjustable. For example, in one embodiment, the limit abutting portion 4 includes a telescopic rod extending in the up and down direction. The lower end of the telescopic rod is connected to the lower die base 21, and the upper end abuts against the upper die base 31. In other embodiments, the limit abutting portion 4 may also include a cylinder or an electric push rod, etc. Specifically, the present application does not limit the type of the limit abutting portion 4.

[0049] To prevent the shaping block 331 from scratching the U-shaped beam 200 during shaping, the connection between the lower end surface of each shaping block 331 and the shaping surface a is provided with an arc transition. In this way, there is no sharp corner, which can prevent the shaping block 331 from being scratched during shaping, and the shaping effect is good.

[0050] Referring to Figure 3 , the pressing portion 32 and the upper die base 31 are connected by a linear driving assembly 5. In this way, the pressing portion 32 can be movably installed on the upper die base 31 in the up and down direction, and the structure is simple.

[0051] Further, the linear drive assembly 5 includes a cylinder or an electric push rod. Of course, in other embodiments, the linear drive assembly 5 may also include a linear motor, a ball screw, etc. Specifically, referring to Figure 1 , in the embodiment of the present application, the upper die base 31 is provided with a mounting hole 312 penetrating in the up-and-down direction, the upper end of the pressing part 32 is provided with a threaded hole 322, the linear drive assembly includes a bolt 51, and the threaded end of the bolt 51 passes through the mounting hole 312 and is threadedly connected to the threaded hole 322 of the pressing part 32. By rotating the bolt 51, on the one hand, the pressing part 32 can be driven to move in the up-and-down direction, and on the other hand, the moving stroke of the pressing part 32 in the up-and-down direction can be restricted. In addition, the present application does not limit the type of the linear drive assembly 5.

[0052] To ensure that the pressing part 32 is accurately and movably installed on the upper die base 31 in the up-and-down direction, the upper die base is provided with a through hole 311 penetrating in the up-and-down direction, the pressing part 32 is formed with an insertion column 321 extending in the up-and-down direction, the insertion column 321 corresponds to the through hole 311, and is movably inserted into the through hole 311 in the up-and-down direction. With such a setting, the pressing part 32 is accurately and movably installed on the upper die base 31 in the up-and-down direction, and the structure is simple and easy to process.

[0053] To ensure that the upper die base 31 accurately moves in the up-and-down direction, a guiding assembly 6 is arranged between the lower die base 21 and the upper die plate 3. The guiding assembly 6 includes a guiding column 61 extending in the up-and-down direction and a guiding cylinder 62 adapted to the guiding column 61. Among the guiding column 61 and the guiding cylinder 62, one of them is arranged on the upper die plate 3, and the other is arranged on the lower die base 21. Through the cooperation and installation of the guiding column 61 and the guiding cylinder 62, the upper die base 31 is accurately and movably installed on the lower die base 21 in the up-and-down direction, and the structure is simple and the effect is good.

[0054] Further, the U-shaped beam shaping tooling 100 further includes a lifting drive assembly. The lifting drive assembly is installed between the upper die base 31 and the lower die base 21, and the upper die base 31 is driven to move in the up-and-down direction through the lifting drive assembly, with a simple structure and improved efficiency.

[0055] Specifically, there are various types of the lifting drive assembly. For example, the lifting drive assembly includes at least one of a cylinder, a hydraulic cylinder, a linear motor, an electric push rod, etc. In this way, the movement of the upper die base 31 is stable and the effect is good.

[0056] Considering that long-term use will cause wear of the shaping block 331, by making both of the two shaping blocks 331 detachably connected to the upper die base 31, when the shaping block 331 is worn, it is convenient to replace the shaping block 331 in time, thereby improving the shaping accuracy with good effect.

[0057] It should be noted that there are various ways to achieve the detachable connection between the shaping block 331 and the upper die base 31. For example, in one embodiment, it is connected by a threaded structure, and in other embodiments, it is connected by a snap structure, etc. Specifically, this application does not limit this.

[0058] In addition, the features of providing the guiding component 6 between the lower die base 21 and the upper die plate 3, the feature of driving the upper die base 31 to move up and down by the lifting drive component, and the feature that both of the two shaping blocks 331 are detachably connected to the upper die base 31 can be set alternatively or simultaneously. When set simultaneously, the effect is good.

[0059] Specifically, this application also provides a method for shaping the U-shaped beam 200. The method for shaping the U-shaped beam 200 is based on the U-shaped beam shaping tooling 100 as described above. Please refer to Figure 1 and the method for shaping the U-shaped beam 200 includes the following steps:

[0060] Step S20: Place the U-shaped beam 200 in the limiting groove 211 so that the notch 201 of the U-shaped beam 200 faces upward.

[0061] Step S30: Make the pressing part 32 move downward to extend into the groove of the U-shaped beam 200 to press the U-shaped beam 200 in the limiting groove 211.

[0062] Step S40: Make the upper die base 31 move downward, driving the shaping component 33 to move downward, so that the two shaping surfaces a are in contact with the two side arms 202 of the U-shaped beam 200.

[0063] Step S50: Make the upper die base 31 move upward, driving the shaping component 33 to move upward, so that the two shaping surfaces a are separated from the two side arms 202 of the U-shaped beam 200.

[0064] Step S60: Make the pressing part 32 move upward to separate from the U-shaped beam 200.

[0065] In the U-shaped beam 200 shaping method provided by the present invention, the U-shaped beam 200 is placed in the limiting groove 211, such that the notch 201 of the U-shaped beam 200 faces upward, the pressing part 32 moves downward to extend into the groove of the U-shaped beam 200 to press the U-shaped beam 200 in the limiting groove 211, the upper die base 31 moves downward to drive the shaping assembly 33 to move downward, such that the two shaping surfaces a are in contact with the two side arms 202 of the U-shaped beam 200, the upper die base 31 moves upward to drive the shaping assembly 33 to move upward, such that the two shaping surfaces a are separated from the two side arms 202 of the U-shaped beam 200, the pressing part 32 moves upward to separate from the U-shaped beam 200. Thus, a shaping space b with a width gradually decreasing from bottom to top is formed between the two shaping blocks 331. When the upper die base 31 moves downward, the two shaping surfaces a apply pressure to the two side arms 202 of the U-shaped beam 200, such that the two side arms 202 of the U-shaped beam 200 approach each other to achieve shaping. The structure is simple, easy to operate, with low input cost, short debugging and rectification cycle, and high production efficiency.

[0066] Further, the U-shaped beam shaping tooling 100 further includes a limiting and abutting part 4. The limiting and abutting part 4 extends in the up and down direction. The lower end of the limiting and abutting part 4 is installed on the lower die base 21, and the upper end is used to abut against the upper die base 31 to limit the downward movement stroke of the upper die base 31. The distance between the upper end and the lower end of the limiting and abutting part 4 is adjustable. Before the step S20 "placing the U-shaped beam 200 in the limiting groove 211, such that the notch 201 of the U-shaped beam 200 faces upward", it further includes;

[0067] Step S10: Adjust the distance between the upper end and the lower end of the limiting and abutting part 4.

[0068] In this step, by making the distance between the upper end and the lower end of the limiting and abutting part 4 adjustable, the length of the limiting part can be adjusted as needed, and the downward movement stroke of the upper die base 31 can be adjusted, such that the ends of the two side arms 202 of the U-shaped beam 200 are in contact with the inner walls of the shaping space b with corresponding widths, thereby realizing side wall springback shaping. The structure is simple and the effect is good.

[0069] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A U-shaped beam shaping tooling, characterized in that, Comprising: A machine base; A lower die, including a lower die base fixedly installed on the machine base. The upper end surface of the lower die base is provided with a limiting groove extending in the front-back direction, and the limiting groove is used for the limiting installation of the U-shaped beam so that the notch of the U-shaped beam faces upward; and, An upper die, including an upper die base movably installed on the machine base in the up-down direction and located above the lower die base, a pressing part arranged below the upper die base and movably installed on the upper die base in the up-down direction, and a shaping component arranged on the upper die base. The shaping component includes two shaping blocks separately arranged on both sides of the pressing part in the left-right direction. Both shaping blocks have shaping surfaces extending in the front-back direction and adjacent to the pressing part. Each shaping surface gradually deviates from the pressing part from top to bottom; Wherein, the pressing part moves downward to extend into the groove of the U-shaped beam to press the U-shaped beam in the limiting groove. The upper die base moves downward, driving the shaping component to move downward, so that the two shaping surfaces are in contact with the two side arms of the U-shaped beam, and guiding the two side arms of the U-shaped beam to slide into the shaping space formed between the two shaping blocks; The U-shaped beam shaping tooling further includes a limiting abutting part. The limiting abutting part extends in the up-down direction. The lower end of the limiting abutting part is installed on the lower die base, and the upper end is used for abutting against the upper die base to limit the downward movement stroke of the upper die base; The distance between the upper end and the lower end of the limiting abutting part is adjustable, so that the ends of the two side arms of the U-shaped beam are in contact with the inner walls of the shaping space with corresponding widths.

2. The U-shaped beam shaping tooling according to claim 1, wherein, The shaping surface forms an angle σ with the vertical plane where the center line is located, wherein, 5° ≤ σ ≤ 10°.

3. The U-shaped beam shaping tooling according to claim 1, characterized in that, The connection between the lower end surface of each shaping block and the shaping surface is provided with an arc transition.

4. The U-shaped beam shaping tooling according to claim 1, characterized in that The pressing part is connected to the upper die base through a linear driving component.

5. The U-shaped beam shaping tooling according to claim 4, characterized in that, The linear driving component includes a cylinder or an electric push rod.

6. The U-shaped beam shaping tooling according to claim 1, characterized in that, A guiding component is arranged between the lower die base and the upper die base. The guiding component includes a guiding column extending in the up-down direction and a guiding cylinder adapted to the guiding column. Among the guiding column and the guiding cylinder, one of them is arranged on the upper die base and the other is arranged on the lower die base; and / or, The U-shaped beam shaping tooling further includes a lifting driving component. The lifting driving component is installed between the upper die base and the lower die base and is used for driving the upper die base to move in the up-down direction; and / or, Both shaping blocks are detachably connected to the upper die base.

7. A U-shaped beam shaping method, based on the U-shaped beam shaping tooling according to any one of claims 1 to 6, characterized in that, The method for shaping the U-shaped beam includes the following steps: Place the U-shaped beam in the limiting groove so that the notch of the U-shaped beam faces upward; Make the pressing part move downward to extend into the groove of the U-shaped beam to press the U-shaped beam in the limiting groove; Make the upper die base move downward, driving the shaping component to move downward, so that the two shaping surfaces are in contact with the two side arms of the U-shaped beam; Make the upper die base move upward, driving the shaping component to move upward, so that the two shaping surfaces are separated from the two side arms of the U-shaped beam; Make the pressing part move upward to separate from the U-shaped beam.

8. The U-shaped beam shaping method according to claim 7, wherein, The U-shaped beam shaping tooling further includes a limiting abutting portion, the limiting abutting portion is arranged to extend in the up-and-down direction, the lower end of the limiting abutting portion is installed on the lower die base, and the upper end is used for abutting against the upper die base to limit the downward movement stroke of the upper die base. The distance between the upper end and the lower end of the limiting abutting portion is adjustable. Before the step of "placing the U-shaped beam in the limiting groove with the notch of the U-shaped beam facing upward", there is also included; Adjusting the distance between the upper end and the lower end of the limiting abutting portion.

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