Adjustable electric pulse auxiliary rolling forming device self-adaptive to plates with different widths and thicknesses

Abstract

The invention relates to the field of metal composite plate rolling forming, in particular to an adjustable electric pulse auxiliary rolling forming device self-adaptive to plates with different widths and thicknesses. The device comprises a rack module, a conveying roller shaft module, a roller shaft conductive triangular support module and a self-adaptive hydraulic rod telescopic assembly module, and all the modules are located on a working platform. Metal composite plate materials are conveyed to the triangular roller shafts through the front-end conveying rollers, the self-adaptive hydraulic rod pieces stretch out and draw back to the roller shafts to be attached to and clamped with the plates, then the roller shafts below the plates conduct electricity, and the transverse pulse current effect is achieved on the pre-combining faces of the plates. After electric conduction, the plate is rolled into the composite plate under the action of the rolling mill device, the condition of stress concentration of metal materials is reduced, the device adopts a mode of applying pulse current by a roller shaft, the electric conduction area is increased, and the forming quality and the bonding performance of the composite plate are optimized through an electroplastic effect and a Joule heating effect generated by current; the material formability is effectively improved by utilizing pulse current, the deformability of metal is reduced, and the plasticity is improved; and meanwhile, the residual stress generated in the rolling process can be effectively eliminated through the heat effect and the non-heat effect of the current, and the composite plate which is well formed can be obtained.

Description

Technical Field

[0001] This invention relates to the field of metal composite plate rolling forming, and in particular to an adaptive adjustable electrical pulse assisted rolling forming device for plates of different widths and thicknesses. Background Technology

[0002] With the increasing demand for lightweight and high-performance materials in aerospace, petrochemical, and rail transportation industries, layered metal composites, due to their combination of the excellent properties of each component metal, such as high strength, corrosion resistance, and high electrical and thermal conductivity, have broad application prospects in these fields. However, traditional rolling composite processes typically require hot rolling at high temperatures or cold rolling at room temperature with large deformation followed by diffusion annealing. These methods generally suffer from high energy consumption, long process flows, and the tendency for brittle intermetallic compounds to form at high temperatures, thus deteriorating the mechanical properties of the composite plate.

[0003] Pulsed current assisted rolling technology utilizes the electroplastic and Joule heating effects generated when pulsed current passes through metal to significantly reduce the material's deformation resistance and improve its plasticity. Simultaneously, the tip discharge effect of the current helps to break down and clean the oxide film on the surface to be composited, promoting interfacial metallurgical bonding. Studies have shown that introducing pulsed current into the rolling process can not only achieve effective composite of metals that are difficult or easy to deform at lower temperatures, but also inhibit the excessive formation of brittle interfacial compounds, improving the overall performance of the composite plate. Early technologies mostly used brushes clamped on the surface of the plate; however, in these methods, the current path is long and dispersed, with a large amount of current flowing disorderly within the plate surface, resulting in severe energy dissipation and a low effective current density at the composite interface, thus limiting the interfacial strengthening effect.

[0004] Therefore, how to construct a pulse current-assisted rolling device that can adapt to plates of varying specifications and maintain stable, efficient, and uniform current introduction during high-speed continuous rolling has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] The purpose of this invention is to provide an adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses, so as to solve the above-mentioned problems, improve the bonding interface of the plates, and adapt to the energization of plates of different specifications.

[0006] To achieve the above objectives, the present invention provides the following solution: an adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses, characterized in that: it includes a frame, a conveyor roller, a roller conductive triangular support, and an adaptive hydraulic rod telescopic assembly; in the mechanism, the plate is conveyed to the roller conductive triangular support via the conveyor roller, the adaptive hydraulic telescopic rod is tensioned, the plate is tightly fitted with the upper and lower rollers, and the lower roller is connected to a power source.

[0007] Preferably, the adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses is characterized in that: the metal plate is conveyed by a conveying roller shaft in front of the frame, and two sets of hydraulic telescopic rods are provided between the roller shafts to drive two baffles to move synchronously towards or away from each other. One end of the hydraulic telescopic rod is connected to the frame through a hinge seat, and the other end is fixed to the baffle through a connecting plate. The telescopic movement of the hydraulic telescopic rod drives the baffle to move back and forth in the horizontal direction, thereby adjusting the width of the conveying channel to accommodate the conveying of plates of different specifications.

[0008] Preferably, the adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses is characterized in that: when the metal plate is conveyed to the conductive triangular support of the roller shaft by the front conveyor roller, the upper insulating roller shaft is in contact with the upper surface of the plate, and the lower left and right energized roller shafts are in contact with the lower surface of the plate. The upper and lower roller shafts form a stable three-point support and clamping for the plate. The triangular support is provided with an adaptive hydraulic telescopic rod with a hinge joint on the hypotenuse. The active extension and retraction of the adaptive hydraulic telescopic rod realizes precise control of the size of the apex angle of the triangular support, enabling the device to actively adapt to plates of different thicknesses.

[0009] Preferably, the adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses is characterized in that: the present invention includes an upper energizing component and a lower energizing component, the upper energizing component and the lower energizing component are symmetrically arranged on the upper and lower sides of the plate conveying path, wherein the lower energizing component includes a first roller shaft conductive triangular bracket, a first hydraulic telescopic rod, a first upper insulating roller shaft and a first lower energizing roller shaft, the first adaptive hydraulic telescopic rod is arranged between the midpoints of the two inclined sides of the first roller shaft conductive triangular bracket, and is used to drive the apex angle of the triangular bracket to change, thereby adjusting the spacing of the first lower energizing roller shaft; The upper energized assembly includes a second roller shaft conductive triangular bracket, a second adaptive hydraulic telescopic rod, a second lower insulating roller shaft, and a second upper energized roller shaft. The second roller shaft conductive triangular bracket is installed upside down, and its second adaptive hydraulic telescopic rod is located between the midpoints of the two inclined sides to drive the apex angle of the upside-down triangular bracket to change, thereby adjusting the spacing of the second upper energized roller shaft. During operation, the upper and lower sets of adaptive hydraulic telescopic rods can be adjusted independently, so that the upper and lower sets of energized rollers are tightly attached to the upper and lower surfaces of the board, respectively. When the thickness of the board changes, the two sets of hydraulic telescopic rods move synchronously or separately, so that the distance between the upper and lower energized rollers matches the thickness of the board, realizing synchronous adaptive energization treatment of the pre-bonded surfaces of the board.

[0010] Preferably, the adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses is characterized by: a roller shaft conductive triangular support, which is an isosceles triangle structure and is horizontally arranged; an upper insulating roller shaft, rotatably connected to the apex of the roller shaft conductive triangular support, with an insulating sleeve covering its outer periphery for contacting the upper surface of the plate and providing clamping force; two lower energized roller shafts, respectively rotatably connected to the two base corners of the roller shaft conductive triangular support for contacting the lower surface of the plate; and a pulse current generating device, whose positive and negative poles are electrically connected to the two lower energized roller shafts, respectively; wherein, the insulating sleeve of the upper clamping roller shaft blocks the current from flowing in the vertical direction, forcing the pulse current to be conducted along the path of "lower left positive energized roller shaft - plate surface - lower right negative energized roller shaft", so that the pulse current is focused on the interlayer interface to generate Joule heat, achieving selective heating of the bonding surface and avoiding energy waste caused by current diversion along the entire plate cross section.

[0011] The present invention has the following technical effects: 1. It is designed with a front-end connection conveyor roller assembly for the rolling mill, which can easily adapt to plates of different specifications and ensure stable transmission; 2. The conductive roller shaft is divided into upper and lower groups to adapt to different thicknesses of materials. The upper and lower materials can be adjusted independently, which broadens the scope of application. 3. When the sheet material passes between the conductive rollers, the hydraulic rod extends and retracts to tension, and the rollers fit tightly against the surface of the sheet material. When the front roller contacts the sheet material, a closed circuit is formed, and a pulse current is applied, which strengthens the bonding strength of the interface and improves the yield. 4. The triangular roller support has an insulated upper roller and a closed circuit between the positive and negative terminals of the lower roller and the board material, effectively preventing current leakage and improving safety. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of the invention; Figure 2 A schematic diagram of the invention's conveyor roller shaft; Figure 3 Schematic diagram of the conductive triangular support for the invention roller; Figure 4 This is a schematic diagram of the action of pulsed current. Detailed Implementation Plan

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Reference Figure 1 This embodiment provides an adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses, characterized in that: it includes a frame (1), a conveyor roller (4), a roller conductive triangular support (6), and an adaptive hydraulic rod telescopic assembly (11); in the mechanism, the plate is conveyed to the roller conductive triangular support (6) through the conveyor roller (4), the adaptive hydraulic telescopic rod (11) is tensioned, the plate is tightly attached to the upper and lower rollers, and the lower roller is connected to the power supply.

[0017] Further optimization of the scheme, the adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses is characterized in that: the metal plate is conveyed by the conveying roller (4) in front of the frame (1), and two sets of hydraulic telescopic rods (8) are provided between the rollers to drive two baffles (7) to move synchronously towards or away from each other. One end of the hydraulic telescopic rod is connected to the frame through a hinge seat, and the other end is fixed to the baffle (7) through a connecting plate. The telescopic movement of the hydraulic telescopic rod (8) drives the baffle to move back and forth in the horizontal direction, thereby adjusting the width of the conveying channel to be suitable for conveying plates of different specifications.

[0018] Further optimization of the scheme, the adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses is characterized in that: when the metal plate is conveyed to the roller conductive triangular bracket (6) by the front conveyor roller (4), the upper insulating roller (9) is in contact with the upper surface of the plate, and the lower left and right energized rollers are in contact with the lower surface of the plate. The upper and lower rollers form a stable three-point support and clamping for the plate. The triangular bracket is provided with an adaptive hydraulic telescopic rod (11) with a hinge joint on the inclined side. The active extension and retraction of the adaptive hydraulic telescopic rod (11) realizes the precise control of the size of the apex angle of the triangular bracket, so that the device can actively adapt to plates of different thicknesses.

[0019] Further optimization scheme, the adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses is characterized in that: the present invention includes an upper energized component and a lower energized component, the upper energized component and the lower energized component are symmetrically arranged on the upper and lower sides of the plate conveying path, wherein the lower energized component includes a first roller shaft conductive triangular bracket (6), a first hydraulic telescopic rod (15), a first upper insulating roller shaft (9) and a first lower energized roller shaft (10)(12), the first adaptive hydraulic telescopic rod (15) is arranged between the midpoints of the two inclined sides of the first roller shaft conductive triangular bracket (6), and is used to drive the apex angle of the triangular bracket to change, thereby adjusting the spacing of the first lower energized roller shaft (10)(12); The upper energized assembly includes a second roller shaft conductive triangular bracket (6), a second adaptive hydraulic telescopic rod (11), a second lower insulating roller shaft (14), and a second upper energized roller shaft (13)(16). The second roller shaft conductive triangular bracket (6) is installed upside down, and its second adaptive hydraulic telescopic rod (11) is located between the midpoints of the two inclined sides to drive the apex angle of the upside-down triangular bracket to change, thereby adjusting the spacing of the second upper energized roller shaft (65)(68). During operation, the upper and lower sets of adaptive hydraulic telescopic rods can be adjusted independently, so that the upper and lower sets of energized rollers are tightly attached to the upper and lower surfaces of the board, respectively. When the thickness of the board changes, the two sets of hydraulic telescopic rods move synchronously or separately, so that the distance between the upper and lower energized rollers matches the thickness of the board, realizing synchronous adaptive energization treatment of the pre-bonded surfaces of the board.

[0020] Further optimization of the scheme, the adaptive adjustable electric pulse assisted rolling forming device for plates of different widths and thicknesses is characterized in that: the roller shaft conductive triangular support (6) is an isosceles triangle structure and is horizontally arranged; the upper insulated roller shaft (9) is rotatably connected to the apex of the roller shaft conductive triangular support (6), and its outer periphery is covered with an insulating sleeve for contacting the upper surface of the plate and providing clamping force; two lower energized roller shafts (10) (12) are respectively rotatably connected to the two base corners of the roller shaft conductive triangular support (6) for... It is in contact with the lower surface of the plate; and a pulse current generating device, the positive and negative poles of which are electrically connected to the two lower energized roller shafts respectively; wherein, the insulating sleeve of the upper clamping roller shaft blocks the current from flowing in the vertical direction, forcing the pulse current to be conducted along the path of "left lower positive energized roller shaft (10) - plate surface - right lower negative energized roller shaft (12)", so that the pulse current is focused on the interlayer interface to generate Joule heat, thereby achieving selective heating of the bonding surface and avoiding energy waste caused by the current being diverted along the entire plate cross section.

[0021] Compared to traditional conductive clamps, the core advantage and innovation of this invention lies in the design of an adaptive adjustable roller shaft conductive triangular support, which avoids problems such as scratches on the plate surface and unstable contact resistance that may be caused by sliding contact, thereby improving the yield. Furthermore, the design of a reasonable adaptive conductive structure effectively achieves the purpose of adapting to the energization of the joint surface of plates with different thicknesses, and ultimately enables uniform, stable, multi-specification adaptive and safe energization of metal plates of different thicknesses during the rolling process.

[0022] In the description of this invention, it should be understood that the terms "upper", "lower", "above", "below", "left lower", "right lower", "center", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0023] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. An adaptive adjustable electrical pulse-assisted rolling forming device for plates of different widths and thicknesses, characterized in that... The mechanism includes a frame (1), a conveyor roller (4), a roller conductive triangular bracket (6), and an adaptive hydraulic rod telescopic assembly (11). In the mechanism, the plate is conveyed to the roller conductive triangular bracket (6) via the conveyor roller (4), and the adaptive hydraulic telescopic rod (11) is tensioned. The plate is tightly attached to the upper and lower rollers, and the lower roller is connected to the power supply.

2. The adaptive adjustable electrical pulse assisted rolling forming device for plates of different widths and thicknesses according to claim 1, characterized in that... Metal sheets are conveyed by conveying rollers (4) in front of the frame (1). Two sets of hydraulic telescopic rods (8) are provided between the rollers to drive two baffles (7) to move synchronously towards or away from each other. One end of the hydraulic telescopic rod is connected to the frame through a hinge seat, and the other end is fixed to the baffle (7) through a connecting plate. The extension and retraction of the hydraulic telescopic rod (8) drives the baffle to move back and forth in the horizontal direction, thereby adjusting the width of the conveying channel to accommodate the conveying of sheets of different specifications.

3. The adaptive adjustable electrical pulse assisted rolling forming device for plates of different widths and thicknesses according to claim 1, characterized in that... When the metal sheet is conveyed to the conductive triangular bracket (6) by the front conveyor roller (4), the upper insulating roller (9) is in contact with the upper surface of the sheet, and the lower two energized rollers are in contact with the lower surface of the sheet. The upper and lower rollers form a stable three-point support and clamping for the sheet. The triangular bracket is provided with an adaptive hydraulic telescopic rod (11) with a hinge joint on the hypotenuse. The active extension and retraction of the adaptive hydraulic telescopic rod (11) realizes the precise control of the size of the apex angle of the triangular bracket, so that the device can actively adapt to sheets of different thicknesses.

4. The adaptive adjustable electrical pulse assisted rolling forming device for plates of different widths and thicknesses according to claims 2 and 3, characterized in that... The present invention includes an upper energized component and a lower energized component, which are symmetrically arranged on the upper and lower sides of the plate conveying path. The lower energized component includes a first roller shaft conductive triangular bracket (6), a first hydraulic telescopic rod (15), a first upper insulating roller shaft (9), and a first lower energized roller shaft (10)(12). The first adaptive hydraulic telescopic rod (15) is arranged between the midpoints of the two inclined sides of the first roller shaft conductive triangular bracket (6) and is used to drive the apex angle of the triangular bracket to change, thereby adjusting the spacing of the first lower energized roller shaft (10)(12). The upper energized assembly includes a second roller shaft conductive triangular bracket (6), a second adaptive hydraulic telescopic rod (11), a second lower insulating roller shaft (14), and a second upper energized roller shaft (13)(16). The second roller shaft conductive triangular bracket (6) is installed upside down, and its second adaptive hydraulic telescopic rod (11) is located between the midpoints of the two inclined sides to drive the apex angle of the inverted triangular bracket to change, thereby adjusting the spacing of the second upper energized roller shaft (13)(16). During operation, the upper and lower sets of adaptive hydraulic telescopic rods can be adjusted independently, so that the upper and lower sets of energized rollers are tightly attached to the upper and lower surfaces of the board, respectively. When the thickness of the board changes, the two sets of hydraulic telescopic rods move synchronously or separately, so that the distance between the upper and lower energized rollers matches the thickness of the board, realizing synchronous adaptive energization treatment of the pre-bonded surfaces of the board.

5. The adaptive adjustable electrical pulse assisted rolling forming device for plates of different widths and thicknesses according to claim 1, characterized in that... The roller shaft conductive triangular bracket (6) is an isosceles triangle structure and is horizontally set as a whole; the upper insulating roller shaft (9) is rotatably connected to the top corner of the roller shaft conductive triangular bracket (6), and its outer periphery is covered with an insulating sleeve for abutting against the upper surface of the plate and providing clamping force; the two lower energized roller shafts (10) (12) are rotatably connected to the two bottom corners of the roller shaft conductive triangular bracket (6) respectively for abutting against the lower surface of the plate; and the pulse current generating device, whose positive and negative poles are electrically connected to the two lower energized roller shafts respectively; wherein, the insulating sleeve of the upper clamping roller shaft blocks the current from flowing in the vertical direction, forcing the pulse current to be conducted along the path of "left lower positive energized roller shaft (10) - plate surface - right lower negative energized roller shaft (12)", so that the pulse current is focused on the interlayer interface to generate Joule heat, thereby achieving selective heating of the bonding surface and avoiding energy waste caused by current diversion along the entire plate cross section.

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