A C-shaped steel end bevel shearing device with quick mold change capability

Abstract

This invention provides a C-shaped steel end bevel shearing device with quick mold change capability, belonging to the technical field of stamping and shearing equipment. The device includes a worktable, an operating table, a frame, a hydraulic station, a C-shaped steel end shearing assembly, and a hydraulic cylinder. The operating table is located on one side of the worktable, the hydraulic station is installed inside the worktable, and the C-shaped steel end shearing assembly is installed on the upper surface of the worktable, including a moving mold, a fixed mold, and a limiting block, for efficiently shearing the beveled end of the C-shaped steel. The frame is installed on the upper surface of the worktable, spanning above the C-shaped steel end shearing assembly. The hydraulic cylinder is fixedly installed on the upper surface of the frame via a flange, and the hydraulic cylinder is connected to the hydraulic station via an oil supply pipe. This device has a compact structure, is easy to integrate into existing production lines, and is simple to maintain. This device is suitable for processing the ends of various types of C-shaped steel, changing the previous situation where beveled C-shaped steel could only be cut using high-cost methods such as laser, gas, and water jet cutting, reducing production costs and having broad market application prospects.

Description

Technical Field

[0001] This invention relates to the field of stamping and shearing equipment technology, and in particular to a C-shaped steel end bevel shearing device with quick mold change capability. Background Technology

[0002] In the manufacturing process of integrated steel products, the beveled end design makes it easier to connect C-shaped steel, which can be fixed to other components by bolts, welding or riveting, thereby improving the integrity and stability of the structure.

[0003] Traditional cutting equipment uses a top-down shearing method, which has an excessively long shearing stroke and low processing efficiency. Especially when processing high-strength steel, it is difficult to guarantee the quality of the cut and it is easy to produce a lot of wrinkles and bends.

[0004] In addition, existing technologies include laser, gas, and water jet cutting methods, but they all face drawbacks such as high initial investment and operating costs, safety risks during operation, potential noise and pollution to the environment, limited effectiveness when cutting certain materials, the need for post-processing of the cut edges to improve quality, potential limitations in precision, cutting speed that may not be fast enough for certain materials, high energy consumption, and high technical requirements for operators. These factors can all affect production efficiency and economic benefits, while also increasing maintenance costs. Summary of the Invention

[0005] To address the aforementioned technical problems in the existing technology, this invention provides a C-shaped steel end bevel shearing device with a quickly changeable mold. The technical solution is as follows:

[0006] A C-shaped steel end bevel shearing device with quick mold change capability includes a worktable, an operating table, a frame, a hydraulic station, a C-shaped steel end shearing assembly, and a hydraulic cylinder.

[0007] The control panel is located on one side of the workbench, facilitating shearing operations and monitoring of equipment status by the operator. The hydraulic station is installed inside the workbench, and the C-shaped steel end shearing assembly is installed on the upper surface of the workbench for precise shearing of the C-shaped steel, ensuring shearing quality and efficiency. The frame is installed on the upper surface of the workbench, spanning above the C-shaped steel end shearing assembly. The hydraulic cylinder is fixedly installed on the upper surface of the frame via a flange, and the hydraulic cylinder is connected to the hydraulic station via an oil supply pipe.

[0008] The C-shaped steel end shearing assembly includes a lower die base, a moving die, a moving die frame, a fixed die and a fixed die frame, an upper die base, and a limiting block, and is used to efficiently shear the beveled ends of the C-shaped steel.

[0009] The square base plate of the lower mold base is fixed on the upper surface of the workbench. The square base plate is provided with a lower mold base guide post and a base. The lower mold base guide post is connected to the lower mold base by screws, and the base is welded to the lower mold base.

[0010] The lower mold base guide column is connected to the moving mold frame to limit all displacements of the moving mold frame except in the vertical direction and the maximum lifting displacement of the moving mold frame; the upper part of the base is fixedly connected to the fixed mold frame.

[0011] The upper mold base includes three upper mold base guide posts, one connecting post, and one keyway. The upper mold base guide posts and connecting post are fixed to the lower surface of the upper mold base by screws, and the keyway is welded to the upper surface of the upper mold base.

[0012] The three upper mold base guide pillars are connected to the fixed mold frame to limit all displacements of the upper mold base except in the vertical direction and the maximum lifting displacement of the upper mold base;

[0013] The connecting column is connected to the moving mold frame by bolts, so as to realize the synchronous lifting and lowering movement with the moving mold frame;

[0014] The keyway is connected to the oil cylinder via a key block at the bottom of the oil cylinder.

[0015] The moving mold is fixed to the moving mold frame by bolts, and the fixed mold is fixed to the fixed mold frame by bolts; the moving mold and the fixed mold move in relative offset motion, and the shearing stroke is slightly greater than the thickness of the C-shaped steel, so that the shearing of the C-shaped steel end can be achieved;

[0016] The moving mold and the fixed mold can be changed to accommodate C-shaped steel of different sizes, thicknesses and bevel angles.

[0017] The moving die features an angled design, with a triangular prism-shaped space cut out from the end face of a cube, forming an inclined surface. This allows the sheared waste to more easily detach from the shearing area after shearing, improving waste removal efficiency. Furthermore, this design helps reduce wear on the die from metal debris during the shearing process, extending the die's service life.

[0018] The limiting block is installed at the shearing end of the C-shaped steel shearing assembly to precisely control the feed rate of the C-shaped steel during the shearing process. Specifically, when the C-shaped steel is guided to the shearing position, the fixed position of the limiting block restricts its further advance, ensuring that the sheared portion of the C-shaped steel is aligned with the shearing blade, thereby guaranteeing the accuracy and consistency of the shearing. The design of the limiting block takes into account the dimensional tolerances of the C-shaped steel and the possible minute displacements during the shearing process. By precisely adjusting the position of the limiting block, it can accommodate C-shaped steel of different sizes, improving the versatility and adaptability of the mold. In addition, the structural design of the limiting block facilitates quick installation and disassembly, allowing for rapid adjustment and maintenance during production.

[0019] One end of the fixed mold is a C-groove shearing end, and the other end is a C-groove feeding end. The size of the C-groove feeding end is larger than that of the C-groove shearing end, and the C-groove feeding end and the C-groove shearing end are connected by a high-order curve of the C-groove cross section.

[0020] The higher-order curve of the C-groove section satisfies the Nth-order curve equation:

[0021] ,

[0022] Where t is the thickness of the C-shaped steel, and N is the degree of the polynomial. The polynomial coefficients for curve correction need to be solved by fitting according to specific conditions. In actual design, for a certain type of C-shaped steel, a curve is initially designed, key points on the curve are collected, and the specific equation of the curve is obtained by fitting with MATLAB, thus obtaining the correction coefficient K value.

[0023] The design of the high-order curve connection of the C-groove section significantly improves the feeding efficiency of C-shaped steel during the shearing process. By increasing the size of the feed end and introducing a high-order curve, the die can guide the C-shaped steel into the shearing position more stably and smoothly, thereby reducing the deviation and resistance of the C-shaped steel placement and making the feeding process smoother. This design not only improves the shearing accuracy and ensures the high quality of the sheared surface, but also reduces frictional wear on the die by reducing the resistance during the C-shaped steel feeding process, thus extending the service life of the die.

[0024] The flange is welded to the upper surface of the frame. The flange is a square flange, and the bottom of the hydraulic cylinder passes through the square flange to connect to the upper mold base.

[0025] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following:

[0026] The above design prioritizes compactness and aesthetics while ensuring performance stability. The equipment is characterized by its exquisite appearance and simple structure. The specially designed moving die features an angled profile, facilitating waste removal, reducing die wear, improving waste removal efficiency, and extending die life. The enlarged feed end slot of the fixed die facilitates the placement of C-shaped steel, and the high-order curve design of the C-slot cross-section guides the feeding process, reducing resistance and frictional wear on the die, thus extending its lifespan. A limiting block precisely positions the C-shaped steel; precise adjustment of the limiting block's position accommodates different sizes of C-shaped steel, ensuring accurate shearing. The relative movement between the fixed and moving dies achieves staggered shearing, significantly reducing the required shearing stroke. Compared with traditional mechanisms that can only perform long-distance shearing from top to bottom, the shearing mechanism of this invention not only improves production efficiency and shortens production time, but also improves the stress condition of the cross section due to the shorter shearing stroke, thereby improving the quality of the product cross section, increasing the pass rate of finished products, and effectively reducing production costs. For C-shaped steel of different sizes, bevel angles, and thicknesses, only the moving mold and the fixed mold need to be replaced, improving the versatility and flexibility of the shearing equipment. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of a C-shaped steel end bevel shearing device with quick mold change capability provided in an embodiment of the present invention;

[0029] Figure 2 This is a structural diagram of the C-shaped steel shearing end assembly in a C-shaped steel end bevel shearing device with quick mold change provided in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the connection between the upper mold frame and the machine frame in a C-shaped steel end bevel shearing device with quick mold change capability provided in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the shearing principle of a C-shaped steel end bevel shearing device with quick mold change capability provided in an embodiment of the present invention;

[0032] Figure 5 This is a cross-sectional view of the fixed mold in a C-shaped steel end bevel shearing device with quick mold change capability provided in an embodiment of the present invention;

[0033] Figure 6 yes Figure 5 Schematic diagram of the AA section;

[0034] Figure 7 This is a schematic diagram of the C-shaped steel before and after shearing, provided by an embodiment of the present invention, showing the application of a C-shaped steel end bevel shearing device with quick mold change capability.

[0035] Wherein: 1-Workbench; 2-Operating table; 3-Frame; 4-Hydraulic station; 5-C-shaped steel shearing end assembly; 6-Oil cylinder; 7-C-shaped steel before shearing; 8-C-shaped steel after shearing;

[0036] 31-Flange; 51-Lower mold base; 52-Moving mold; 53-Moving mold frame; 54-Limit block; 55-Fixed mold; 56-Fixed mold frame; 57-Upper mold base; 61-Key block;

[0037] 511-Lower mold base guide post; 512-Base; 521-Moving mold inclined surface; 551-C-slot shearing end; 552-C-slot feed end; 553-C-slot cross-section high-order curve; 571-Upper mold base guide post; 572-Connecting post; 573-Keyway. Detailed Implementation

[0038] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0039] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0040] In this embodiment of the invention, sometimes a subscript such as W1 may be written in a non-subscript form such as W1. When the difference is not emphasized, the meaning they express is the same.

[0041] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0042] This invention provides a C-shaped steel end bevel shearing device with a quick-change mold. For example... Figure 1 The C-shaped steel end bevel shearing device shown, which allows for quick mold changes, includes: a workbench 1, an operating table 2, a frame 3, a hydraulic station 4, a C-shaped steel end shearing assembly 5, and a hydraulic cylinder 6.

[0043] The operating platform 2 is placed on one side of the workbench 1. The hydraulic station 4 is installed inside the workbench 1. The C-shaped steel end shearing assembly 5 is installed on the upper surface of the workbench 1. The frame 3 is installed on the upper surface of the workbench 1. The frame spans above the C-shaped steel end shearing assembly 5. The oil cylinder 6 is fixedly installed on the upper surface of the frame 3 through a flange. The oil cylinder 6 is connected to the hydraulic station 4 through an oil supply pipe.

[0044] The C-shaped steel end shearing assembly 5 includes a lower die base 51, a moving die 52, a moving die frame 53, a fixed die 55, a fixed die frame 56, an upper die base 57, and a limiting block 54, and is used to efficiently shear the bevel of the C-shaped steel end.

[0045] like Figure 2 As shown, the square base plate of the lower mold base 51 is fixed on the upper surface of the workbench 1. The lower mold base guide post 511 and the base 512 are provided on the square base plate. The lower mold base guide post is connected to the lower mold base 51 by screws, and the base is welded to the lower mold base.

[0046] The lower mold base guide column 511 is connected to the moving mold frame 53 to limit all displacements of the moving mold frame except in the vertical direction and the maximum lifting displacement of the moving mold frame; the upper part of the base 512 is fixedly connected to the fixed mold frame 56.

[0047] The upper mold base 57 includes three upper mold base guide posts 571, one connecting post 572, and one keyway 573. The upper mold base guide posts 571 and connecting post 572 are fixed to the lower surface of the upper mold base 57 by screws, and the keyway 573 is welded to the upper surface of the upper mold base.

[0048] The three upper mold base guide pillars 571 are connected to the fixed mold frame 56 to limit all displacements of the upper mold base 57 except in the vertical direction and the maximum lifting displacement of the upper mold base 57.

[0049] The connecting column 572 is connected to the moving mold frame 53 by bolts, so as to realize synchronous lifting and lowering movement with the moving mold frame;

[0050] The keyway 573 is connected to the oil cylinder 6 via the key block 61 at the bottom of the oil cylinder, such as... Figure 3 As shown.

[0051] The movable mold 52 is fixed to the movable mold frame 53 by bolts, and the fixed mold 55 is fixed to the fixed mold frame 56 by bolts; the movable mold 52 and the fixed mold 55 perform relative misalignment movement;

[0052] The moving mold 52 and the fixed mold 55 can be replaced for C-shaped steel of different sizes, thicknesses and bevel angles.

[0053] like Figure 4 The moving mold 52 is designed with an angle, and a triangular prism-shaped space is cut off on the end face of a cube to form the moving mold inclined surface 521.

[0054] The limiting block 54 is set at the shearing end of the C-shaped steel shearing end assembly and is used to precisely control the feed amount of the C-shaped steel during the shearing process.

[0055] like Figure 5 and Figure 6 As shown, one end of the fixed mold 55 is a C-shaped groove shearing end 551, and the other end is a C-shaped groove feeding end 552. The size of the C-shaped groove feeding end 552 is larger than that of the C-shaped groove shearing end 551, and the C-shaped groove feeding end 552 and the C-shaped groove shearing end 551 are connected by a high-order curve 553 of the C-shaped groove cross section.

[0056] The higher-order curve of the C-groove section satisfies the Nth-order curve equation:

[0057] ,

[0058] Where t is the thickness of the C-shaped steel, and N is the degree of the polynomial. For the polynomial coefficients used in curve correction, in this embodiment, key points were collected for C-shaped steel with a thickness of 1 mm (i.e., t=1). MATLAB was used to fit the curves using polynomials of orders 2-5 respectively, obtaining the curve equations. Comparison showed that the 4th-order polynomial had a higher fitting degree and a smoother curve; therefore, the 4th-order polynomial was selected as the higher-order curve for the C-shaped groove section. The higher-order curve 553 for the C-shaped groove section is as follows:

[0059] y=-1.0965845×10^(-7)x^4+2.4551534225×10^(-5)x^3-5.0955548437 3×10^(-4)x^2+1.5087782420131×10^(-2)x-2.931870125796×10^(-3)

[0060] The flange is welded to the upper surface of the frame 3. The flange is a flange 31. The bottom of the oil cylinder passes through the flange 31 and connects to the upper mold base 57.

[0061] In the existing integrated steel product manufacturing process, the beveled design of the C-shaped steel ends makes it easier to connect, and it is suitable for various fields such as construction, bridges and photovoltaic brackets. However, the existing technology has problems of low efficiency and high cost in the shearing process.

[0062] To address the aforementioned problems, this invention provides a C-shaped steel end bevel shearing device with a quickly changeable mold.

[0063] The device operates as follows:

[0064] The operation process of this embodiment includes inserting the C-shaped steel piece parallel to the fixed mold 55, smoothly guiding the feed of the C-shaped steel piece through the design of the high-order curve 553 of the C-shaped groove section, and accurately positioning the final feed position of the C-shaped steel piece using the limit block 54. The operator inputs a shearing command through the operating table 2, activating the hydraulic cylinder 6, causing its internal piston rod (located at the bottom of the hydraulic cylinder) to push the upper mold base, thereby driving the mold frame 53 and the moving mold 52 to move vertically downward in coordination. During this process, the moving mold 52 and the fixed mold 55 cooperate with each other, applying shearing force to the C-shaped steel piece at a predetermined position through staggered shearing technology. After shearing, the beveled end of the C-shaped steel piece is precisely removed, forming the required shape and size. Subsequently, the piston rod of the hydraulic cylinder 6 retracts, driving the mold assembly back to the initial position, preparing for the next shearing, thus completing the entire automated shearing process. The C-shaped steel 7 before shearing and the C-shaped steel 8 after shearing are shown below. Figure 7 As shown.

[0065] Furthermore, another key innovation of this invention lies in its interchangeable mold design. This means that for C-shaped steel of different sizes, bevel angles, and thicknesses, diverse shearing requirements can be met simply by replacing the corresponding moving mold 52 and fixed mold 55. This modular design not only improves the versatility and flexibility of the shearing equipment but also simplifies the equipment adjustment and maintenance process, thereby increasing production efficiency and reducing maintenance costs. Through this design, the present invention can flexibly address various shearing requirements for C-shaped steel without requiring complex reconfiguration or adjustment of the equipment.

[0066] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A C-shaped steel end bevel shearing device with quick mold change capability, characterized in that, Includes a workbench, control panel, frame, hydraulic station, C-shaped steel end shearing assembly, and hydraulic cylinder. The operating platform is placed on one side of the workbench, the hydraulic station is installed inside the workbench, the C-shaped steel end shearing assembly is installed on the upper surface of the workbench, the frame is installed on the upper surface of the workbench, the frame spans above the C-shaped steel end shearing assembly, the oil cylinder is fixedly installed on the upper surface of the frame through a flange, and the oil cylinder is connected to the hydraulic station through an oil supply pipe. The C-shaped steel end shearing assembly includes a lower die base, a moving die, a moving die frame, a fixed die, a fixed die frame, an upper die base, and a limiting block, and is used to efficiently shear the beveled ends of the C-shaped steel. The movable mold is fixed to the movable mold frame by bolts, and the fixed mold is fixed to the fixed mold frame by bolts; the movable mold and the fixed mold perform relative misalignment movements; The moving mold and the fixed mold can be replaced for C-shaped steel of different sizes, thicknesses and bevel angles; The moving mold is designed with an angle, and a triangular prism-shaped space is cut off from the end face of a cube to form the inclined surface of the moving mold; The limiting block is set at the shearing end of the C-shaped steel shearing end assembly to precisely control the feed amount of the C-shaped steel during the shearing process. One end of the fixed mold is a C-groove shearing end, and the other end is a C-groove feeding end. The size of the C-groove feeding end is larger than that of the C-groove shearing end, and the C-groove feeding end and the C-groove shearing end are connected by a high-order curve of the C-groove cross section. The higher-order curve of the C-groove section satisfies the Nth-order curve equation: ， Where t is the thickness of the C-shaped steel, and N is the degree of the polynomial. The polynomial coefficients are used for curve correction, and the solution is obtained by fitting the curve according to the specific situation.

2. The C-shaped steel end bevel shearing device with quick mold change capability according to claim 1, characterized in that, The square base plate of the lower mold base is fixed on the upper surface of the workbench. The square base plate is provided with a lower mold base guide post and a base. The lower mold base guide post is connected to the lower mold base by screws, and the base is welded to the lower mold base.

3. The C-shaped steel end bevel shearing device with quick mold change capability according to claim 2, characterized in that, The lower mold base guide column is connected to the moving mold frame to limit all displacements of the moving mold frame except in the vertical direction and the maximum lifting displacement of the moving mold frame; the upper part of the base is fixedly connected to the fixed mold frame.

4. The C-shaped steel end bevel shearing device with quick mold change capability according to claim 1, characterized in that, The upper mold base includes three upper mold base guide posts, one connecting post, and one keyway. The upper mold base guide posts and connecting post are fixed to the lower surface of the upper mold base by screws, and the keyway is welded to the upper surface of the upper mold base.

5. The C-shaped steel end bevel shearing device with quick mold change capability according to claim 4, characterized in that, The three upper mold base guide pillars are connected to the fixed mold frame to limit all displacements of the upper mold base except in the vertical direction and the maximum lifting displacement of the upper mold base; The connecting column is connected to the moving mold frame by bolts, so as to realize the synchronous lifting and lowering movement with the moving mold frame; The keyway is connected to the oil cylinder via a key block at the bottom of the oil cylinder.

6. The C-shaped steel end bevel shearing device with quick mold change capability according to claim 1, characterized in that, The flange is welded to the upper surface of the frame. The flange is a square flange, and the bottom of the hydraulic cylinder passes through the square flange to connect to the upper mold base.

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