Channel steel double-splicing rapid automatic riveting die and process

Abstract

The invention discloses a channel steel double-splicing rapid automatic riveting die and process. The channel steel double-splicing rapid automatic riveting die comprises an upper die base and a lower die base. The upper die base is provided with a stamping mechanism. A quick release module is arranged between the upper die holder and the lower die holder; the lower die base is provided with an elastic mechanism, and a riveting punch in the punching mechanism penetrates through the first die core and then is matched with an inner top convex die of the elastic mechanism to press the upper channel steel and the lower channel steel. The quick disassembly module can be quickly disassembled and replaced to adapt to channel steel of different sizes, so that the riveting die meets the riveting and stamping requirements of channel steel of various specifications, multiple purposes are achieved through one die, the number of the dies is reduced, the die cost is saved, and the production efficiency and flexibility can be greatly improved; the elastic mechanism moves between the initial position and the stamping position, and after stamping is completed, the elastic mechanism drives the upper channel steel and the lower channel steel to move upwards through the elasticity of the elastic mechanism, so that the riveted convex hull is smoothly separated from the second die core, automatic stripping is achieved, and preparation is made for riveting operation of the next station.

Description

Technical Field

[0001] The invention relates to the field of channel steel double-jointed riveting and stamping technology in the earthquake-resistant, finished product and photovoltaic industries, and more specifically, to a channel steel double-jointed rapid automatic riveting die and process. Background Art

[0002] Channel steel is a long steel strip with a groove-shaped cross section. It is a carbon structural steel for construction and machinery. It is a steel section with a complex cross section. Its cross section shape is a groove. Channel steel is mainly used in building structures, curtain wall engineering, mechanical equipment and vehicle manufacturing. Channel steel is usually required to have good welding, riveting performance and comprehensive mechanical properties during use.

[0003] At present, the traditionally used double-jointed channel steel is mostly welded, which has many disadvantages such as poor welding, easy desoldering, blackening of the weld appearance, and low production efficiency.

[0004] The above problems are worth solving. Summary of the invention

[0005] In order to overcome the problems of poor welding, easy desoldering, blackening of weld spots and low production efficiency in existing double-joined channel steels, the present invention provides a rapid automatic riveting die and process for double-joined channel steels.

[0006] The technical solution of the present invention is as follows:

[0007] A channel steel double-jointed rapid automatic riveting die, comprising an operating table, wherein an upper die base and a lower die base are arranged on the operating table;

[0008] The upper die base is provided with a stamping mechanism;

[0009] A quick-release module is provided between the upper die base and the lower die base, and the quick-release module includes a first die core and a second die core, the first die core is used to support the upper channel steel, and the second die core is used to support the lower channel steel, and the upper channel steel corresponds vertically to the lower channel steel;

[0010] An elastic mechanism is provided on the lower die base, and the elastic mechanism moves between an initial position and a stamping position. The elastic mechanism includes an inner top convex membrane, and the inner top convex membrane passes through the second die core. The riveting punch in the stamping mechanism passes through the first die core and cooperates with the inner top convex membrane to press the upper channel steel and the lower channel steel.

[0011] According to the above-mentioned scheme of the present invention, the first mold core includes a first stripper plate and a second stripper plate, the first stripper plate is connected to the upper mold base, and the second stripper plate is movably connected to the first stripper plate.

[0012] According to the above scheme of the present invention, the second mold core includes a lower mold core and a lifting plate, the cross section of the lower mold core is "T"-shaped, and the lifting plate is arranged on both sides of the lower mold core for clamping the lower mold core.

[0013] According to the above scheme of the present invention, the elastic mechanism includes the inner top convex film, the inner top block and an elastic member arranged in the lower mold base, the inner top convex film is connected to the inner top block, and the inner top block is connected to the elastic member.

[0014] The present invention according to the above scheme also includes a pressing mechanism, which includes a nitrogen spring, an upper push rod and a lower push rod. The nitrogen spring is arranged on the upper mold base, and the output end of the nitrogen spring is connected to the upper push rod. The lower push rod is movably arranged on the lower mold plate on the lower mold base.

[0015] According to the above-mentioned solution of the present invention, the diameter of the head of the riveting punch gradually increases from the bottom end to the top end.

[0016] According to the above-mentioned solution of the present invention, the end of the inner top convex film extends upward to form a convex portion, and the cross-section of the convex portion is an isosceles trapezoid.

[0017] A channel steel double-jointed rapid automatic riveting process, the specific manufacturing process is as follows:

[0018] S1. According to the specifications of the channel steel to be processed, a suitable quick-release module is selected, and the selected quick-release module is installed in the automatic riveting mold;

[0019] S2. Install the automatic riveting die with the quick-release module installed on the production equipment, and adjust the production equipment to ensure that the automatic riveting die is on the same horizontal line as the servo feeder;

[0020] S3. Adjust the production equipment parameters, push the channel steel into the automatic riveting die to prepare for riveting production, and ensure that the upper channel steel and the lower channel steel correspond vertically.

[0021] According to the present invention of the above scheme, the riveting production steps in S3 are:

[0022] S31, the punching mechanism moves downward, and the pressing mechanism is started to exert downward pressure on the elastic mechanism, so that the elastic mechanism moves downward from the initial position to the punching position, and the riveting punch enters the lower die core and cooperates with the inner top convex film to jointly complete the punching and riveting actions of the upper channel steel and the lower channel steel;

[0023] S32, the punching mechanism moves upward, and at the same time eliminates the force applied by the pressing mechanism to the elastic mechanism, and the elastic mechanism moves from the punching position to the initial position, driving the riveted convex hull to separate from the second mold core;

[0024] S33, the servo feeder moves the upper channel steel and the lower channel steel at the same time, preparing for the riveting work of the next station, and repeating steps S31 and S32 until the riveting of this channel steel is completed.

[0025] According to the present invention of the above scheme, in step S31, the step of applying downward pressure to the elastic mechanism by the pressing mechanism is:

[0026] S311. When the nitrogen spring is compressed and releases energy, it pushes the upper push rod downward.

[0027] S312, the upper ejector rod transmits the downward force to the lower ejector rod on the lower template, causing the lower ejector rod to also move downward.

[0028] S313, the lower ejector rod drives the lifting plate on the lower template to move downward together, thereby applying downward pressure to the inner ejector block.

[0029] S314, after the inner top block is subjected to pressure, the elastic member is compressed, and at the same time, the inner top convex membrane is driven to move downward together, thereby completing the downward pressing action on the entire elastic mechanism.

[0030] According to the present invention of the above scheme, its beneficial effects are as follows:

[0031] The quick-release module of the present invention can be quickly disassembled and replaced to flexibly adapt to channel steels of different sizes, so that the riveting mold can adapt to the riveting and stamping requirements of channel steels of various specifications, realize multiple uses of one mold, reduce the number of molds, save mold costs, and greatly improve production efficiency and flexibility;

[0032] The elastic mechanism of the present invention moves between the initial position and the stamping position. After the stamping is completed, the elastic mechanism automatically drives the upper channel steel and the lower channel steel to move upward by using its own elastic force, so that the riveted convex hull can be smoothly separated from the second mold core, realizing automatic material removal and preparing for the riveting operation of the next station.

[0033] Compared with traditional welding, the present invention has more stable riveting adhesion, more reliable quality, and effectively avoids quality problems such as desoldering;

[0034] Compared with traditional welding, the appearance of the riveted product of the present invention maintains its original color, does not require additional processing, is easier to inspect, and has better overall quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a cross-sectional view of the present invention;

[0036] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0037] Figure 3 It is a cross-sectional view from another perspective of the present invention.

[0038] In the drawings, the reference numerals are as follows:

[0039] 10. Upper die base; 20. Lower die base; 21. Lower die plate; 30. Riveting punch; 40. Quick-release die set; 41. First die core; 411. First stripper plate; 412. Second stripper plate; 42. Second die core; 421. Lower die core; 422. Lifting plate; 50. Elastic mechanism; 51. Inner top convex membrane; 52. Inner top block; 53. Elastic part; 60. Pressing mechanism; 61. Nitrogen spring; 62. Upper ejector rod; 63. Lower ejector rod; 70. Upper channel steel; 80. Lower channel steel. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0041] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices. Terms such as "disposed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "bottom", etc. are based on the directions or positions shown in the drawings, which are only for the convenience of description and cannot be understood as limitations on the present technical solution.

[0042] It should be noted that channel steel is a long steel strip with a groove-shaped cross section. It is a carbon structural steel for construction and machinery. It is a steel section with a complex cross section. Its cross section shape is a groove. Channel steel is mainly used in building structures, curtain wall engineering, mechanical equipment and vehicle manufacturing. Channel steel is usually required to have good welding, riveting performance and comprehensive mechanical properties during use.

[0043] At present, the traditionally used double-jointed channel steel is mostly welded, which has many disadvantages such as poor welding, easy desoldering, blackening of the weld appearance, and low production efficiency.

[0044] like Figure 1-Figure 3As shown, this embodiment provides a channel steel double-jointed rapid automatic riveting die, and the quick-release module 40 can be quickly disassembled and replaced to flexibly adapt to channel steels of different sizes, so that the riveting die can adapt to the riveting and stamping requirements of channel steels of various specifications, such as 41 / 52 / 62 high channel steel sizes, to achieve one die for multiple uses, reduce the number of dies, save die costs, and greatly improve production efficiency and flexibility;

[0045] The elastic mechanism 50 moves between the initial position and the punching position. After the punching is completed, the elastic mechanism 50 automatically drives the upper channel steel 70 and the lower channel steel 80 to move upward by using its own elastic force, so that the riveted convex bump is smoothly separated from the second mold core 42, realizing automatic material removal and preparing for the riveting operation of the next station;

[0046] Compared with traditional welding, the riveting bonding force is more stable, the quality is more reliable, and quality problems such as desoldering are effectively avoided;

[0047] Compared with traditional welding, the appearance of the riveted product remains original, no additional processing is required, inspection is easier, and the overall quality is better.

[0048] Specifically, it includes an operating table, which serves as the supporting base of the entire mold and stably carries other components to ensure stability during operation. The operating table is provided with an upper die base 10 and a lower die base 20; a stamping mechanism is provided on the upper die base 10, and the stamping mechanism is provided with a riveting punch 30, which is the main power source for performing the riveting operation. When the riveting punch 30 is driven, it can accurately align with and penetrate the upper die base 10 and the first die core 41 in the quick-release module 40 to achieve the stamping of the upper channel steel 70 and the lower channel steel 80.

[0049] A quick-release module 40 is provided between the upper die base 10 and the lower die base 20. The quick-release module 40 includes a first die core 41 and a second die core 42. The first die core 41 is used to support the upper channel steel 70, and the second die core 42 is used to support the lower channel steel 80. The upper channel steel 70 corresponds vertically to the lower channel steel 80. The first die core 41 and the second die core 42 can be quickly disassembled and replaced to adapt to channel steels of different sizes, so that the automatic riveting mold can quickly adapt to the riveting requirements of channel steels of different specifications, greatly improving production efficiency and flexibility.

[0050] The lower die base 20 is provided with an elastic mechanism 50, which moves between the initial position and the stamping position. The elastic mechanism 50 includes an inner top convex film 51, which penetrates the second die core 42 and cooperates with the riveting punch 30 in the stamping mechanism during the stamping process to jointly complete the pressing of the upper channel steel 70 and the lower channel steel 80. After the stamping is completed, the elastic mechanism 50 uses its own elastic force to automatically drive the upper channel steel 70 and the lower channel steel 80 to move upward, so that the riveted convex hull is smoothly separated from the second die core 42, realizing automatic material removal, and preparing for the riveting operation of the subsequent workstation.

[0051] In one embodiment, the first mold core 41 includes a first stripper plate 411 and a second stripper plate 412, the first stripper plate 411 is connected to the upper mold base 10, and the second stripper plate 412 is movably connected to the first stripper plate 411. The second stripper plate 412 is suspended on the upper mold base 10 through the first stripper plate 411, the second stripper plate 412 supports the upper channel steel 70 to keep the upper channel steel 70 in a vertical state, the second stripper plate 412 is movably connected to the first stripper plate 411, and the second stripper plate 412 can move between an initial position and a stripping position along the vertical direction relative to the first stripper plate 411. After the punching mechanism completes the riveting punching of the upper channel steel 70 and the lower channel steel 80, the elastic mechanism 50 automatically drives the upper channel steel 70 and the lower channel steel 80 to move upward by using its own elastic force. At this time, the second stripping plate 412 moves up to the stripping position along the first stripping plate 411, providing sufficient upward movement space for the upper channel steel 70 and the lower channel steel 80, so that the riveted convex hull can be smoothly separated from the second mold core 42, and prepare for the riveting operation of the next station (specifically, it is convenient for the upper channel steel 70 and the lower channel steel 80 to move to the next station). Before the riveting operation of the next station is carried out, the second stripping plate 412 moves down to the initial position, stably supporting the upper channel steel 70, ensuring that the upper channel steel 70 can be accurately positioned and supported at the beginning of each riveting operation, thereby ensuring the stability and consistency of the riveting quality.

[0052] The second mold core 42 includes a lower mold core 421 and a lifting plate 422. The cross section of the lower mold core 421 is "T"-shaped. The lower mold core 421 is used to support the lower channel steel 80. The "T"-shaped lower mold core 421 can support the lower channel steel 80 more stably to prevent it from shifting or shaking during the riveting process. The lifting plate 422 is arranged on both sides of the lower mold core 421 to clamp the lower mold core 421 so that the lower mold core 421 can be stably placed between the lower mold plates 21 on the lower mold base 20. This design not only improves the stability of the lower mold core 421, but also facilitates the disassembly and replacement of the second mold core 42, further improving production efficiency.

[0053] In one embodiment, the elastic mechanism 50 includes an inner top convex film 51, an inner top block 52 and an elastic member 53 disposed in the lower die seat 20, wherein the inner top convex film 51 is connected to the inner top block 52, and the inner top block 52 is connected to the elastic member 53. The inner top block 52 is disposed between the inner top convex film 51 and the elastic member 53, which not only increases the force-bearing area of ​​the inner top convex film 51 and the elastic member 53, but also ensures that the displacement of the elastic member 53 during compression and rebound can be stably and accurately transmitted to the inner top convex film 51 through the inner top block 52, thereby ensuring that the stamping process and the stripping process are carried out stably and the produced double-jointed channel steel is not deformed.

[0054] Preferably, the automatic riveting die also includes a pressing mechanism 60, which includes a nitrogen spring 61, an upper push rod 62 and a lower push rod 63. The nitrogen spring 61 is arranged on the upper die base 10, and the output end of the nitrogen spring 61 is connected to the upper push rod 62. The lower push rod 63 is movably arranged on the lower mold plate 21 on the lower die base 20.

[0055] When the riveting punch 30 of the stamping mechanism starts to move downward, the pressing mechanism 60 acts synchronously to apply downward pressure to the elastic mechanism 50, so that the inner top convex membrane 51 in the elastic mechanism 50 first moves downward to a predetermined stamping position, and then cooperates with the riveting punch 30 in the stamping mechanism to complete the stamping action together, effectively reducing the errors that may occur during the riveting process of the upper channel steel 70 and the lower channel steel 80, and reducing the damage to the elastic mechanism 50 caused by direct stamping.

[0056] The action flow of the pressing mechanism 60 is as follows: when the nitrogen spring 61 is compressed and releases energy, it pushes the upper push rod 62 to move downward. The upper push rod 62 transmits this downward force to the lower push rod 63 on the lower mold plate 21, so that the lower push rod 63 also moves downward. As the lower push rod 63 moves downward, the lifting plate 422 on the lower mold plate 21 moves downward together, thereby applying downward pressure to the inner top block 52. After the inner top block 52 is subjected to pressure, it compresses the elastic member 53 and drives the inner top convex membrane 51 to move downward together, thereby completing the pressing action of the entire elastic mechanism 50.

[0057] In one embodiment, the diameter of the head of the riveting punch 30 gradually increases from the bottom to the top. During the stamping process, when the upper channel steel 70 is subjected to the pressure of the riveting punch 30, a groove with an opening facing upward is formed at the force point. The diameter of the groove gradually increases from the bottom to the top.

[0058] The end of the inner top convex film 51 extends upward to form a convex portion, and the cross section of the convex portion is an isosceles trapezoid. During the stamping process, the isosceles trapezoidal convex portion of the inner top convex film 51 directly acts on the lower channel steel 80. A groove with an opening facing downward is formed on the convex bulge of the lower channel steel 80. The diameter of the groove gradually increases from the top to the bottom.

[0059] The riveting punch 30 and the inner top convex membrane 51 cooperate to form a buckling structure between the upper channel steel 70 and the lower channel steel 80. The buckling structure is achieved by the mutual engagement between the upper channel steel 70 and the lower channel steel 80, thereby enhancing the connection strength between the upper channel steel 70 and the lower channel steel 80 and effectively preventing the upper channel steel 70 from detaching from the lower channel steel 80.

[0060] This embodiment provides a channel steel double-jointed rapid automatic riveting process, and the specific manufacturing process is as follows:

[0061] S1. Select a suitable quick-release module 40 according to the specifications of the channel steel to be processed, and install the selected quick-release module 40 into the automatic riveting mold;

[0062] S2, installing the automatic riveting die with the quick-release module 40 installed on the production equipment, adjusting the production equipment, ensuring that the automatic riveting die and the servo feeder are on the same horizontal line to ensure the accuracy of feeding and riveting;

[0063] S3. Adjust the parameters of the production equipment to ensure that the production requirements are met. Push the channel steel into the automatic riveting die and prepare for riveting production. Ensure that the upper channel steel 70 and the lower channel steel 80 correspond vertically.

[0064] The steps of riveting production in S3 are:

[0065] S31, the punching mechanism moves downward, and the pressing mechanism 60 is started to apply downward pressure to the elastic mechanism 50, so that the elastic mechanism 50 moves downward from the initial position to the punching position, and the riveting punch 30 enters the lower die core 421 and cooperates with the inner top convex film 51 to jointly complete the punching and riveting actions of the upper channel steel 70 and the lower channel steel 80;

[0066] There are four riveting punches 30, which can rivet four stations at one time. The servo feeder feeds the materials to achieve rapid riveting, improve production efficiency by more than 500%, and effectively save manufacturing costs.

[0067] S32, the punching mechanism moves upward, and at the same time eliminates the force applied by the pressing mechanism 60 to the elastic mechanism 50, and the elastic mechanism 50 moves from the punching position to the initial position, driving the riveted convex bulge to separate from the second mold core 42;

[0068] S33, the servo feeder simultaneously moves the upper channel steel 70 and the lower channel steel 80 to prepare for the riveting work of the next station, and repeats steps S31 and S32 until the riveting of this channel steel is completed.

[0069] Among them, in step S31, the step of the pressing mechanism 60 applying downward pressure to the elastic mechanism 50 is:

[0070] S311, when the nitrogen spring 61 is compressed and releases energy, it pushes the upper push rod 62 to move downward.

[0071] S312, the upper push rod 62 transmits the downward force to the lower push rod 63 on the lower template 21, so that the lower push rod 63 also moves downward.

[0072] S313 , the lower ejector rod 63 drives the lifting plate 422 on the lower template 21 to move downward together, thereby applying downward pressure to the inner ejector block 52 .

[0073] S314 , after the inner top block 52 is subjected to pressure, the elastic member 53 is compressed, and at the same time, the inner top convex membrane 51 is driven to move downward together, thereby completing the downward pressing action of the entire elastic mechanism 50 .

[0074] Specifically, S31 is the downward movement of the pressing mechanism, and at the same time, the nitrogen spring 61 is used to press the lower push rod 63 through the upper push rod 62, and the lower push rod 63 presses the lifting plate 422, the inner top convex film 51, the inner top block 52 and the elastic member 53 on the lower die seat 20 from the initial position to the punching position, and the riveting punch 30 enters the lower die core 421 and cooperates with the inner top convex film 51 to rivet the channel steel;

[0075] S32 is the upward movement of the stamping mechanism, the riveting punch 30 leaves the lower die core 421, and at the same time the nitrogen spring 61 drives the upper ejector rod 62 to move upward, the elastic member 53 in the lower die base 20 automatically rebounds, driving the lifting plate 422, the inner top convex membrane 51, and the inner top block 52 on the lower die base 20 to move from the stamping position to the initial position, and driving the lower ejector rod 63 to move upward, and the riveting structure of the channel steel separates from the lower die core 421 as the inner top convex membrane 51 moves upward.

[0076] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

[0077] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A channel steel double-jointed rapid automatic riveting die, characterized in that: It includes an upper die base and a lower die base; The upper die base is provided with a stamping mechanism; A quick-release module is provided between the upper die base and the lower die base, and the quick-release module includes a first die core and a second die core, the first die core is used to support the upper channel steel, and the second die core is used to support the lower channel steel, and the upper channel steel corresponds vertically to the lower channel steel; An elastic mechanism is provided on the lower die base, and the elastic mechanism moves between an initial position and a stamping position. The elastic mechanism includes an inner top convex membrane, and the inner top convex membrane passes through the second die core. The riveting punch in the stamping mechanism passes through the first die core and cooperates with the inner top convex membrane to press the upper channel steel and the lower channel steel.

2. A channel steel double-jointed rapid automatic riveting die according to claim 1, characterized in that: The first mold core includes a first stripper plate and a second stripper plate, the first stripper plate is connected to the upper mold base, and the second stripper plate is movably connected to the first stripper plate.

3. A channel steel double-jointed rapid automatic riveting die according to claim 2, characterized in that: The second mold core includes a lower mold core and a lifting plate. The cross section of the lower mold core is "T"-shaped. The lifting plates are arranged on both sides of the lower mold core for clamping the lower mold core.

4. A channel steel double-jointed rapid automatic riveting die according to claim 1, characterized in that: The elastic mechanism comprises the inner top convex film, an inner top block and an elastic member arranged in the lower die seat, the inner top convex film is connected to the inner top block, and the inner top block is connected to the elastic member.

5. A channel steel double-jointed rapid automatic riveting die according to claim 4, characterized in that: It also includes a pressing mechanism, which includes a nitrogen spring, an upper push rod and a lower push rod. The nitrogen spring is arranged on the upper mold base, and the output end of the nitrogen spring is connected to the upper push rod. The lower push rod is movably arranged on the lower mold plate on the lower mold base.

6. A channel steel double-jointed rapid automatic riveting die according to claim 1, characterized in that: The diameter of the head of the riveting punch gradually increases from the bottom end to the top end.

7. A channel steel double-jointed rapid automatic riveting die according to claim 6, characterized in that: The end of the inner top convex film extends upward to form a convex portion, and the cross section of the convex portion is an isosceles trapezoid.

8. A rapid automatic riveting process for double-jointed channel steels, characterized in that: The specific manufacturing process is as follows: S1. According to the specifications of the channel steel to be processed, a suitable quick-release module is selected, and the selected quick-release module is installed in the automatic riveting mold; S2. Install the automatic riveting die with the quick-release module installed on the production equipment, and adjust the production equipment to ensure that the automatic riveting die is on the same horizontal line as the servo feeder; S3. Adjust the production equipment parameters, push the channel steel into the automatic riveting die to prepare for riveting production, and ensure that the upper channel steel and the lower channel steel correspond vertically.

9. A channel steel double-jointed rapid automatic riveting process according to claim 8, characterized in that: The steps of riveting production in S3 are: S31, the punching mechanism moves downward, and the pressing mechanism is started to exert downward pressure on the elastic mechanism, so that the elastic mechanism moves downward from the initial position to the punching position, and the riveting punch enters the lower die core and cooperates with the inner top convex film to jointly complete the punching and riveting actions of the upper channel steel and the lower channel steel; S32, the punching mechanism moves upward, and at the same time eliminates the force applied by the pressing mechanism to the elastic mechanism, and the elastic mechanism moves from the punching position to the initial position, driving the riveted convex hull to separate from the second mold core; S33, the servo feeder moves the upper channel steel and the lower channel steel at the same time, preparing for the riveting work of the next station, and repeating steps S31 and S32 until the riveting of this channel steel is completed.

10. A channel steel double-jointed rapid automatic riveting process according to claim 9, characterized in that: In step S31, the step of applying downward pressure to the elastic mechanism by the pressing mechanism is as follows: S311, when the nitrogen spring is compressed and releases energy, it pushes the upper push rod to move downward; S312, the upper ejector rod transmits the downward force to the lower ejector rod on the lower template, so that the lower ejector rod also moves downward; S313, the lower ejector rod drives the lifting plate on the lower template to move downward together, thereby exerting downward pressure on the inner ejector block; S314, after the inner top block is subjected to pressure, the elastic member is compressed, and at the same time, the inner top convex membrane is driven to move downward together, thereby completing the downward pressing action on the entire elastic mechanism.

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