Current-assisted difficult-to-deform alloy cellular board preparation device and current-assisted difficult-to-deform alloy cellular board preparation method

Abstract

The invention discloses a current-assisted difficult-to-deform alloy cellular board preparation device and method, and relates to the technical field of strip precision machining, the current-assisted difficult-to-deform alloy cellular board preparation device comprises a feeding mechanism, an inlet end rolling electrode group, a discharging mechanism and an outlet end rolling electrode group, and the inlet end rolling electrode group, a strip and the outlet end rolling electrode group form an electric pulse loop. Compared with a traditional manufacturing device and manufacturing technology for the honeycomb plate made of the hard-to-deform alloy, the pulse current is introduced into the manufacturing process of the honeycomb plate made of the hard-to-deform alloy, the plastic deformation capacity of the hard-to-deform alloy is improved through the pulse current, the counter-acting force (stamping force) in the roll bending forming process of the plate is reduced, and the ductility is improved; and aging and recrystallization are accelerated, rebounding can be reduced or even eliminated by eliminating residual stress, the shape correcting procedure is simplified, and the high-quality cellular board is obtained while the technology is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of strip precision processing, and in particular to a device and method for preparing a honeycomb plate of a current-assisted hard-to-deform alloy. Background Art

[0002] As a special composite structural material, the honeycomb sandwich structure has high specific strength, specific stiffness and good fatigue resistance, heat insulation and sound insulation properties. The honeycomb core material itself also has the functions of flow guidance, heat dissipation, electromagnetic shielding (stealth), buffering and energy absorption. Therefore, it is widely used in the core buffer components of aircraft, spacecraft cabin walls and soft landing mechanisms, and the front shock absorber of high-speed trains.

[0003] With the development of aerospace technology, the performance requirements of honeycomb structures are becoming higher and higher in more stringent use environments. The use of difficult-to-deform alloys such as Ti2AlNb intermetallic compounds and nickel-based high-temperature alloys to prepare honeycomb cores has become the development direction for the replacement and upgrading of high-end aerospace equipment. However, these difficult-to-deform alloys have high strength, poor plasticity, and significant elastic deformation. The high-quality preparation of their honeycomb cores is an important factor restricting the application of such honeycomb structures.

[0004] At present, most of the honeycomb core preparation methods that meet the needs of aerospace vehicles are forming methods. This method is subject to the influence of the material forming properties, resulting in the prepared honeycomb panels having problems such as large springback, low forming accuracy, and complicated processes. As a new process, electric pulse assisted forming technology can significantly improve the forming performance of parts, regulate the microstructure of alloys, and bridge damage cracks. Therefore, it is considered to have great development potential. The electric pulse assisted forming process uses self-resistance heating technology to enable metal sheets to reach the forming temperature required for processing within a few minutes or even seconds, greatly improving heating efficiency and saving costs. When the pulse current flows through the metal blank, it can not only keep the workpiece at a relatively stable hot forming temperature, but also generate electronic wind force, thereby improving the plastic deformation ability of the metal. While current-assisted forming efficiently heats and improves forming performance, it also avoids the shortcomings of workpiece surface oxidation affecting subsequent processing and requiring additional processes to improve the surface.

[0005] In view of this, how to provide a device and method for using pulse current as an energy field to assist in the preparation of difficult-to-deform alloy honeycomb panels is an issue that technical personnel in this field urgently need to solve. Summary of the invention

[0006] The purpose of the present invention is to provide a current-assisted honeycomb panel preparation device and method for difficult-to-deform alloys, so as to solve the problems existing in the prior art and perform electric pulse treatment during the preparation process of the difficult-to-deform alloy honeycomb panel.

[0007] To achieve the above object, the present invention provides the following solution: The present invention provides a current-assisted honeycomb panel preparation device for a difficult-to-deform alloy, wherein the roll bending device has a roll pressing mechanism, comprising:

[0008] Feeding mechanism;

[0009] An inlet end rolling electrode group, the inlet end rolling electrode group is connected with the feeding mechanism, the strip enters the feeding end of the rolling mechanism through the feeding mechanism and the inlet end rolling electrode group, and the strip is rollingly connected with the inlet end rolling electrode group;

[0010] A discharging mechanism, the discharging mechanism being connected to a discharging end of the rolling mechanism;

[0011] An outlet rolling electrode group, the outlet rolling electrode group is connected with the discharge mechanism, the strip is output from the discharge end of the rolling mechanism, discharged through the discharge mechanism and the outlet rolling electrode group, and the strip is rollingly connected with the outlet rolling electrode group;

[0012] The inlet end rolling electrode group, the strip material and the outlet end rolling electrode group form an electric pulse circuit.

[0013] Furthermore, it also includes a material receiving mechanism, and the material receiving mechanism includes:

[0014] A receiving conveyor belt, the receiving conveyor belt is connected to the rolling electrode group at the outlet end;

[0015] A receiving strip limiting frame, wherein the receiving strip limiting frame is fixedly arranged on the first frame and close to the upper surface of the receiving conveyor belt, the first frame is fixedly connected to the roller bending device, and the receiving strip limiting frame defines a first strip channel;

[0016] The receiving rubber roller, the receiving strip limiting frame expands outwardly at one end away from the discharging mechanism to form a first expansion portion, and the receiving rubber roller is arranged on the inner side surface of the first expansion portion.

[0017] Furthermore, it also includes a material collection limit auxiliary plate, which is covered on the first strip channel, and the material collection limit auxiliary plate is bent upward at one end away from the discharge mechanism.

[0018] Furthermore, the outlet rolling electrode group includes:

[0019] An outlet rolling electrode, wherein there are two outlet rolling electrodes, the two outlet rolling electrodes are vertically arranged and spaced apart to form a longitudinal strip channel, the longitudinal strip channel is respectively connected to the discharging mechanism and the receiving conveyor belt, and the longitudinal strip channel corresponds to the first strip channel;

[0020] A support frame, the support frame is horizontally arranged and fixedly connected to the first frame, the support frame is provided with two sets of hinges, each set of hinges includes two first connecting rods arranged in parallel; the outlet end rolling electrode is hinged to one end of the two first connecting rods of the same set of hinges through a bottom plate;

[0021] A roller connecting rod, the roller connecting rod is slidably connected to the support frame along the strip conveying direction, and the roller connecting rod is respectively hinged to the bottom plates corresponding to the two rolling electrodes at the outlet end through a second connecting rod;

[0022] The first torsion spring is fixedly connected to the other end of the first connecting rod through a first threaded screw, the first connecting rod is hinged to the support frame through the first threaded screw and the first torsion spring, and the first torsion spring has an elastic tendency to bring the two rolling electrodes at the outlet end closer to each other.

[0023] Furthermore, the discharging mechanism comprises:

[0024] A discharging conveyor belt, one end of which is connected to the discharging end of the roller pressing mechanism, and the other end of which is connected to the longitudinal strip channel;

[0025] A discharging strip limiting frame, wherein the discharging strip limiting frame is fixedly arranged on the first frame and close to the upper surface of the discharging conveyor belt, and the discharging strip limiting frame defines a second strip channel, and the second strip channel corresponds to the longitudinal strip channel;

[0026] The discharging rubber roller is configured such that one end of the discharging strip limiting frame away from the rolling mechanism expands outward to form a second expansion portion, and the discharging rubber roller is arranged on the inner side of the second expansion portion.

[0027] Furthermore, the discharging mechanism further comprises:

[0028] A mounting seat is arranged between the discharge conveyor belt and the discharge end of the roller pressing mechanism. A booster wheel is arranged inside the mounting seat. The booster wheel is driven by an auxiliary material receiving motor. The booster wheel can drive the strip to move from the discharge end of the roller pressing mechanism to the discharge conveyor belt.

[0029] Furthermore, the feeding mechanism comprises:

[0030] A feeding conveyor belt, one end of which is connected to the inlet end rolling electrode group;

[0031] A feed strip limiting frame, the feed strip limiting frame is fixedly arranged on the second frame and close to the upper surface of the feed conveyor belt, the second frame is fixedly connected to the roller bending device, and the feed strip limiting frame defines a third strip channel;

[0032] A feeding rubber roller, wherein one end of the feeding strip limiting frame close to the inlet end fixing electrode group expands outward to form a third expansion portion, and the feeding rubber roller is arranged on the inner side surface of the third expansion portion.

[0033] Furthermore, the feeding mechanism further comprises:

[0034] The belt-pressing wheel is rotatably arranged on a mounting frame, and the mounting frame is fixedly connected to a feed belt limiting frame through a tension spring, and the tension spring has an elastic tendency to bring the belt-pressing wheel closer to the feed conveyor belt.

[0035] Furthermore, the inlet end rolling electrode group includes:

[0036] An inlet end rolling electrode, wherein two inlet end rolling electrodes are arranged on the second frame, the two inlet end rolling electrodes are arranged horizontally and spaced to form a transverse strip channel, the transverse strip channel is respectively connected to the feed end of the rolling mechanism and the feed conveyor belt, and the transverse strip channel corresponds to the third strip channel;

[0037] The rolling electrode at the entrance end includes a fixed rolling electrode and a movable rolling electrode. The fixed rolling electrode is fixedly arranged on the second frame through a stepped shaft, a bearing and a bearing seat. Two third connecting rods are arranged in parallel on the second frame. One end of the third connecting rod is hinged to the second frame through a second threaded screw and a second torsion spring. The other ends of the two third connecting rods are hinged to the cross plate. The cross plate is provided with a first limiting groove along its length direction. The second frame is provided with two second limiting grooves along the longitudinal direction. The movable rolling electrode is fixedly connected to a tripod connecting roller. The three bottom feet of the tripod connecting roller are respectively slidably connected to the first limiting groove and the two second limiting grooves. The second torsion spring has an elastic tendency to bring the movable rolling electrode closer to the fixed rolling motor.

[0038] The present invention also provides a method for preparing a honeycomb plate of a current-assisted hard-to-deform alloy, comprising the following steps:

[0039] An inlet rolling electrode group and an outlet rolling electrode group are respectively arranged at the feed end and the discharge end of the rolling mechanism, and the strip is rollingly connected to the inlet rolling electrode group and the outlet rolling electrode group respectively. The inlet rolling electrode group, the strip and the outlet rolling electrode group form an electric pulse circuit, and the roll bending equipment outputs electric pulses to the strip when rolling the strip through the rolling mechanism.

[0040] The technical effects of the present invention are as follows:

[0041] (1) Compared with the traditional honeycomb panel preparation device and preparation process of the difficult-to-deform alloy, the present invention introduces pulse current into the preparation process of the honeycomb panel of the difficult-to-deform alloy, and uses the pulse current to enhance the plastic deformation ability of the difficult-to-deform alloy. The pulse current assisted forming technology can generate Joule heat in a short time, quickly heat the material, and soften the material. In addition, it can generate a large number of drift electrons inside the material, which can promote the movement of dislocations, open dislocation entanglements, and cause dislocations to slip or even climb under the action of external forming forces, thereby improving the forming limit of the material. The application of current also helps to reduce the reaction force (punch force) during the sheet roll forming process, improve ductility, accelerate aging and recrystallization, and reduce or even eliminate springback by eliminating residual stress. The correction process is simplified, and high-quality honeycomb panels are obtained while simplifying the process.

[0042] (2) The pulse current-assisted honeycomb panel preparation process of the difficult-to-deform alloy proposed in the present invention has many advantages, such as shorter panel heating time and lower surface oxidation degree. The application of pulse current will also cause high-speed drift electrons to collide with dislocations and promote dislocation movement, which will further reduce the dislocation density and improve the forming performance of the panel.

[0043] (3) The present invention designs a forming device that is suitable for the pulse current-assisted honeycomb panel preparation process of difficult-to-deform alloys. The device is suitable for preparing honeycomb panels by energizing foils of various thicknesses, and can also accommodate differences in panel widths. It has compensation and countermeasures for defects such as warping and inconsistent width of the original panel.

[0044] (4) In the process of preparing honeycomb panels by electrified roller bending, the strip moves smoothly and each structure adopts movable connection and soft connection to reduce the friction resistance in the strip forming process and eliminate problems such as tip discharge, thereby effectively protecting the surface quality of the finished product.

[0045] (5) The present invention supplies electricity to the strip at both ends of the roll bending device, which can ensure the stable application of current during the roll bending process and improve the stability of sheet forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0047] Figure 1 The overall assembly diagram of the current-assisted honeycomb panel manufacturing device for difficult-to-deform alloys;

[0048] Figure 2 The overall structure diagram of the current-assisted honeycomb panel preparation device for difficult-to-deform alloys;

[0049] Figure 3 The overall structural assembly drawing of the discharge end of the roller pressing mechanism;

[0050] Figure 4 The overall structural assembly diagram of the feeding end of the roller pressing mechanism;

[0051] Figure 5 Structural diagram of the receiving mechanism;

[0052] Figure 6 The structure diagram of the rolling electrode group at the outlet end;

[0053] Figure 7 Cross-sectional view of the rolling electrode group structure at the outlet end;

[0054] Figure 8 Discharging mechanism structure diagram;

[0055] Fig. 9 Feeding mechanism structure diagram;

[0056] Fig.10 The structure diagram of the rolling electrode group at the inlet end;

[0057] Fig.11 Cross-sectional view of the rolling electrode group structure at the inlet end;

[0058] Fig.12 Schematic diagram of the movement principle of the rolling electrode group at the inlet end;

[0059] Fig.13 Schematic diagram of the movement principle of the rolling electrode group at the outlet end;

[0060] Fig.14 A cross-sectional view of the structure of a fixed rolling electrode;

[0061] Fig.15 TC4 corrugated board formed by pulse current;

[0062] Fig.16 TC4 corrugated board without energy field assisted forming;

[0063] Fig.17 Schematic diagram of the profiler selection area of ​​TC4 corrugated board formed by pulse current assisting forming;

[0064] Fig.18 Schematic diagram of the profiler selection area of ​​TC4 corrugated board without energy field assisted forming;

[0065] Fig.19 Comparison of forming angles of TC4 corrugated board of Example 1 and Comparative Example;

[0066] Among them, 1. material receiving mechanism; 101. material receiving limit auxiliary plate; 102. material receiving strip limit frame; 103. material receiving rubber roller; 104. material receiving conveyor belt;

[0067] 2. Rolling electrode group at the outlet end; 201. Rolling electrode at the outlet end; 202. First connecting rod; 2021. First threaded screw; 2022. First torsion spring; 203. Support frame; 204. Second connecting rod; 205. Roller connecting rod;

[0068] 3. Discharging mechanism; 301. Discharging strip limiting frame; 302. Discharging rubber roller; 303. Discharging conveyor belt; 304. Mounting seat; 305. Boosting wheel; 306. Auxiliary receiving motor;

[0069] 4. Feeding mechanism; 401. Feeding conveyor belt; 402. Feeding rubber roller; 403. Tension spring; 404. Feeding belt limiting frame; 405. Belt pressing wheel; 406. Feeding motor;

[0070] 5. Rolling electrode group at the inlet end; 501. The third connecting rod; 5011. The second torsion spring; 5012. The second parent-child screw; 502. The tripod connecting roller; 503. The movable rolling electrode; 504. The fixed rolling electrode; 5041. The stepped shaft; 5042. The bearing; 5043. The bearing seat; 505. The second frame. DETAILED DESCRIPTION

[0071] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0072] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0073] Example

[0074] like Figure 1-Figure 14The embodiment of the present invention provides a current-assisted honeycomb panel preparation device for a difficult-to-deform alloy, wherein the roll bending device has a rolling mechanism, including: a feeding mechanism 4; an inlet rolling electrode group 5, the inlet rolling electrode group 5 is connected to the feeding mechanism 4, the strip enters the feeding end of the rolling mechanism through the feeding mechanism 4 and the inlet rolling electrode group 5, and the strip is rollingly connected to the inlet rolling electrode group 5; a discharging mechanism 3, the discharging mechanism 3 is connected to the discharging end of the rolling mechanism; an outlet rolling electrode group 2, the outlet rolling electrode group 2 is connected to the discharging mechanism 3, the strip is output from the discharging end of the rolling mechanism, discharged through the discharging mechanism 3 and the outlet rolling electrode group 2, and the strip is rollingly connected to the outlet rolling electrode group 2; the inlet rolling electrode group 5, the strip and the outlet rolling electrode group 2 form an electric pulse circuit.

[0075] In this embodiment, a receiving mechanism 1 is also included, which includes: a receiving conveyor belt 104, which is connected to the rolling electrode group 2 at the outlet end; a receiving strip limiting frame 102, which is fixedly arranged on the first frame and close to the upper surface of the receiving conveyor belt 104, and the first frame is fixedly connected to the roller bending device, and the receiving strip limiting frame 102 defines a first strip channel; a receiving rubber roller 103, the receiving strip limiting frame 102 is expanded outwardly at one end away from the discharging mechanism 3 to form a first expansion part, and the receiving rubber roller 103 is arranged on the inner side of the first expansion part. The combination of the receiving strip limiting frame 102 and the receiving rubber roller 103 can correct the output state of the strip when it is output from the rolling mechanism, and prevent the formed corrugated board from piling up, which affects the subsequent strip forming. The receiving conveyor belt 104 collects and lifts the formed corrugated board to prevent the corrugated board from sagging due to its own weight, which affects the stability of subsequent strip forming. The receiving limit auxiliary plate 101 is covered on the first strip channel. The end of the receiving limit auxiliary plate 101 away from the discharging mechanism 3 is bent upward, which can guide the formed sheet from the warped state to the range of the receiving conveyor belt 104 to assist in the collection of the formed corrugated board.

[0076] In this embodiment, the outlet rolling electrode group 2 includes: an outlet rolling electrode 201, there are two outlet rolling electrodes 201, the two outlet rolling electrodes 201 are vertically arranged and spaced to form a longitudinal strip channel, the longitudinal strip channel is connected to the discharge mechanism 3 and the receiving conveyor belt 104 respectively, and the longitudinal strip channel corresponds to the first strip channel; a support frame 203, the support frame 203 is horizontally arranged and fixedly connected to the first frame, and two groups of hinges are arranged on the support frame 203, each group of hinges includes two parallel first connecting rods 202; the outlet rolling electrode 201 is connected to the same group of hinges through the bottom plate. One end of the first connecting rod 202 is hinged; the roller connecting rod 205, the roller connecting rod 205 is slidingly connected to the support frame 203 along the strip conveying direction, and the roller connecting rod 205 is hinged to the bottom plates corresponding to the two outlet rolling electrodes 201 through the second connecting rod 204; the first torsion spring 2022, the first torsion spring 2022 is fixedly connected to the other end of the first connecting rod 202 through the first mother-and-child screw 2021, the first connecting rod 202 is hinged to the support frame 203 through the first mother-and-child screw 2021 and the first torsion spring 2022, and the first torsion spring 2022 has an elastic tendency to bring the two outlet rolling electrodes 201 closer to each other.

[0077] like Fig.13 As shown in the figure, when the first torsion spring 2022 generates a torque in the N direction, the first connecting rod 202 and the base plate rotate in the N direction, the second connecting rod 204 generates a movement tendency to move inwards, and the roller connecting rod 205 generates a movement tendency to move inwards. Fig.13 The two rolling electrodes 201 at the outlet end tend to move downward, and at this time, the two rolling electrodes 201 at the outlet end tend to move closer to each other. The two rolling electrodes 201 at the outlet end can always be close to each other, so that the distance between the two electrodes is usually slightly smaller than the width of the corrugated board after the strip is formed when no force is applied. During the processing, the formed corrugated board will continue to move forward with the subsequent processing of the strip.

[0078] In this embodiment, the discharging mechanism 3 includes: a discharging conveyor belt 303, one end of which is connected to the discharging end of the rolling mechanism, and the other end is connected to the longitudinal strip channel; a discharging strip limiting frame 301, which is fixedly arranged on the first frame and close to the upper surface of the discharging conveyor belt 303, and the discharging strip limiting frame 301 defines a second strip channel, and the second strip channel corresponds to the longitudinal strip channel; a discharging rubber roller 302, which expands outward from one end of the discharging strip limiting frame 301 away from the rolling mechanism to form a second expansion portion, and the discharging rubber roller 302 is arranged on the inner side of the second expansion portion.

[0079] In this embodiment, the discharging mechanism 3 further includes: a mounting seat 304, the mounting seat 304 is arranged between the discharging conveyor belt 303 and the discharging end of the rolling mechanism, and a booster wheel 305 is arranged in the mounting seat 304. The booster wheel 305 is driven by the auxiliary receiving motor 306, and the booster wheel 305 can drive the strip to move from the discharging end of the rolling mechanism to the discharging conveyor belt 303. The motor speed can be controlled by controlling the magnitude of the applied current, so as to achieve a feeding speed coordinated with the roller bending device. This feeding method will serve as a supplement to the roller bending device to push the strip feeding method. The auxiliary receiving motor 306 cooperates with the pulling of the booster wheel 305 to assist the movement of the strip. The formed corrugated board will not be subject to too much friction resistance, but will move along the inner tangent direction of the two outlet end rolling electrodes 201, thereby opening the distance between the two outlet end rolling electrodes 201, and the two outlet end rolling electrodes 201 can apply current by being close to the side of the formed foil. The movable bonding of the two rolling electrodes 201 at the outlet ends can also be used to compensate for possible width processing errors of the strip raw material itself, thereby achieving stable application of current and widening the width limit of the strip raw material.

[0080] In this embodiment, the feeding mechanism 4 includes: a feeding conveyor belt 401, which is driven by a feeding motor 406, and one end of the feeding conveyor belt 401 is connected to the rolling electrode group 5 at the entrance end; a feeding strip limiting frame 404, which is fixedly arranged on the second frame 505 and close to the upper surface of the feeding conveyor belt 401, and the second frame 505 is fixedly connected to the roller bending device, and the feeding strip limiting frame 404 defines a third strip channel; a feeding rubber roller 402, which is close to the end of the fixed electrode group at the entrance end and expands outward to form a third expansion part, and the feeding rubber roller 402 is arranged on the inner side of the third expansion part; a pressing wheel 405, which is rotatably arranged on the mounting frame, and the mounting frame is fixedly connected to the feeding strip limiting frame 404 through a tension spring 403, and the tension spring 403 has an elastic tendency to bring the pressing wheel 405 close to the feeding conveyor belt 401. The strip to be processed can be corrected in its entry state by the feeding strip limiting frame 404, so that the strip can be processed in an initial state perpendicular to the roll bending device and parallel to the rolling direction.

[0081] In this embodiment, the inlet end rolling electrode group 5 includes: an inlet end rolling electrode, two inlet end rolling electrodes are arranged on the second frame 505, the two inlet end rolling electrodes are arranged horizontally and spaced to form a transverse strip channel, the transverse strip channel is connected with the feed end of the rolling mechanism and the feed conveyor 401 respectively, the transverse strip channel corresponds to the third strip channel, the feed conveyor 401 and the transverse strip channel are located at the same horizontal height, which serves as a limit reference for the initial processing height of the strip; the inlet end rolling electrode includes a fixed rolling electrode 504 and a movable rolling electrode 503, the fixed rolling electrode 504 is fixedly arranged on the second frame 505 through a stepped shaft 5041, a bearing 5042 and a bearing seat 5043, and the stepped shaft 5041, the bearing 5042 and the bearing seat 5043 are all made of copper. Copper is an excellent conductor material with high conductivity, which can effectively reduce energy loss and stably apply a current field to the strip. The fixed rolling electrode 504 can realize self-rotation with the help of its bearing 5042 structure, thereby avoiding the negative impact on the surface quality of the foil caused by the sliding friction between the fixed rolling electrode 504 and the movable rolling electrode 503 and the foil surface; for the outlet rolling electrode group 2, the tip discharge generated by the sliding friction between the formed corrugated board corners and the outlet rolling electrode 201 will reduce the forming quality of the corrugated board, and the self-rotation of the outlet rolling electrode 201 can effectively reduce friction, which can not only prevent blockage during the strip collection process, but also improve the surface quality of the corrugated board by reducing tip discharge. Two third connecting rods 501 are arranged in parallel on the second frame 505, one end of the third connecting rod 501 is hinged to the second frame 505 by a second threaded screw 5012 and a second torsion spring 5011, the other ends of the two third connecting rods 501 are hinged to the cross plate, the cross plate is provided with a first limiting groove along its length direction, the second frame 505 is provided with two second limiting grooves along the longitudinal direction, the movable rolling electrode 503 is fixedly connected to the tripod connecting roller 502, the three bottom feet of the tripod connecting roller 502 are respectively slidably connected to the first limiting groove and the two second limiting grooves, and the second torsion spring 5011 has an elastic tendency to bring the movable rolling electrode 503 closer to the fixed rolling motor.

[0082] like Fig.12As shown, when the second torsion spring 5011 generates torque in the M direction, the tripod connecting roller 502 is limited by the first limiting groove and the second limiting groove, and moves downward along the second limiting groove. At the same time, the cross plate moves rightward relative to the tripod connecting roller 502, generating an elastic tendency to drive the movable rolling electrode 503 to move in the direction of the fixed rolling electrode 504. Therefore, the second torsion spring 5011 can make the fixed rolling electrode 504 and the movable rolling electrode 503 close to each other. This soft connection method can make the strip fit closely with the two electrodes, so that the distance between the two electrodes can be dynamically maintained at a strip thickness, which is conducive to achieving stable current transmission. This connection method can maintain a certain clamping pressure between the fixed rolling electrode 504 and the movable rolling electrode 503, thereby achieving the correction of the vertical warping of the plate, so that the strip always enters the roller bending device in a straight state.

[0083] The present invention also provides a current-assisted 0.1 mm thick TC4 strip roll-bending honeycomb panel processing method, comprising the following steps:

[0084] Step 1, equipment installation. Adjust the contact state of the roll bending equipment to 0 value, and adjust the distance between the two rolls of the rolling mechanism to be able to operate stably with strip: Z=t0+Z r =t0+(1.0~1.1)t0=(2.0~2.1) t0=(2.0~2.1)ⅹ0.1=0.205mm, where Z is the roller gap, Z r The gap during roll bending, t0 is the original plate thickness. The motor frequency (f) of the roll bending equipment is adjusted to 0.65Hz, so that the angular velocity of the two rollers (ω=2πf) is 4.082rad / s, and the linear velocity (V=ωr) of the 0.1mm TC4 strip passing through is 4.082ⅹ0.082=0.3347m / s. The electrical frequency of the feed motor 406 is set to f=3.33Hz to match the feed speed of the strip and assist the input of the TC4 strip. The frequency of the auxiliary receiving motor 306 is set to f=3.802Hz to match the feed speed of the strip and assist the output of the TC4 strip.

[0085] Step 2: Use #400, #800, #1000, #1500, and #2000 sandpaper to polish the surface and sides of the TC4 strip to be processed, clean the surface cutting fluid stains caused by wire cutting, ensure the surface is clean, and make the friction coefficient of the strip consistent during the processing.

[0086] Step 3: Since the strip forming process has high requirements for equipment accuracy, it is necessary to use alcohol for cleaning and wipe the roller surface with non-woven cloth to ensure that there is no oil or dust on the roller surface to avoid affecting the processing accuracy.

[0087] Step 4, electrically connect the pulse power supply to the rolling electrode group 2 at the outlet and the rolling electrode group 5 at the inlet. The positive electrode of the pulse power supply is connected to the bearing seat 5043 of the fixed rolling electrode 504 of the rolling electrode group 5 at the inlet and connected by M3 bolts; the negative electrode of the pulse power supply is connected to the rolling electrode group 2 at the outlet and connected by M3 bolts. Connect a current probe to the rubber of the positive electrode wire of the pulse power supply and connect it to the oscilloscope, and parameters such as the current waveform and current density are displayed in real time. Set up a thermal imager at the discharge port to monitor the temperature changes of the TC4 strip in real time. Set the square wave current parameters of the pulse power supply output to: voltage 15V, current 8A, frequency 100Hz, duty cycle 20%; set the emissivity of the thermal imager to 0.89, which is obtained by the thermocouple temperature measurement calibration.

[0088] Step 5, sequentially turn on the feed motor 406, the roll bending device, the auxiliary receiving motor 306 and the pulse power supply. The roll bending device processes the TC4 strip, and the processed corrugated board enters the outlet rolling electrode group 2 and the inlet rolling electrode group 5 under the feeding of the feed motor 406, the delivery of the roll bending device and the traction of the auxiliary receiving motor 306 to form an electric pulse circuit. This process method ensures the stability of the electric field assistance during the forming process of the TC4 strip, thereby obtaining the TC4 corrugated board (such as Fig.15 ), it can be clearly seen that the structure of the corrugated board is complete, without rebound and warping, and the product quality is good. The forming angle of the corrugated board after forming is counted by using a three-dimensional profiler, as shown in Table 1.

[0089] Table 1:

[0090] Location <![CDATA[A1]]> <![CDATA[B1]]> <![CDATA[C1]]> <![CDATA[D1]]> <![CDATA[E1]]> <![CDATA[F1]]> <![CDATA[G1]]> <![CDATA[H1]]> <![CDATA[I1 <!-- 7 -->]]> Angle / ° 140.547 154.329 140.761 147.352 138.139 157.507 146.719 152.536 142.271

[0091] Comparative Example

[0092] The processing method of TC4 strip roll bending honeycomb panel without applying energy field assistance, the processing steps are the same as those in Example 1, the only difference is that no electric pulse energy field is applied to assist in the TC4 strip roll bending process. The roll bending equipment receives the TC4 sheet material transmitted by the electrode fixture at the outlet for processing, and then transmits it to the electrode fixture at the outlet for collection. The corrugated board formed by roll bending under this process fails to improve the problem of large angle rebound existing in the traditional process of processing corrugated board (such as Fig.16 ), and the formed quality of the produced sheet is poor, there is a lot of warping, which makes it impossible to directly complete the subsequent welding, and a lot of correction is required before it can be used. The forming angle of the corrugated board after forming is counted by using a three-dimensional profiler, as shown in Table 2.

[0093] Table 2:

[0094] Location <![CDATA[A2]]> <![CDATA[B2]]> <![CDATA[C2]]> <![CDATA[D2]]> <![CDATA[E2]]> <![CDATA[F2]]> <![CDATA[G2]]> <![CDATA[H2]]> <![CDATA[I2]]> Angle / ° 134.173 133.373 126.065 129.017 135.583 135.469 129.717 124.502 141.778

[0095] Fig.19From the comparative bar charts made according to Table 1 and Table 2, it can be clearly seen that adding the electric pulse energy field can intuitively reduce the forming angle, reduce springback and warping, and reduce the correction process.

[0096] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0097] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A current-assisted honeycomb panel manufacturing device for a hard-to-deform alloy, wherein the roll bending device has a roll pressing mechanism, characterized in that: include: Feed mechanism (4); An inlet end rolling electrode group (5), the inlet end rolling electrode group (5) being connected to the feeding mechanism (4), the strip material entering the feeding end of the rolling mechanism through the feeding mechanism (4) and the inlet end rolling electrode group (5), and the strip material being rollingly connected to the inlet end rolling electrode group (5); A discharging mechanism (3), the discharging mechanism (3) being connected to a discharging end of the roller pressing mechanism; An outlet rolling electrode group (2), the outlet rolling electrode group (2) being connected to the discharge mechanism (3), the strip being output from the discharge end of the rolling mechanism, and being discharged through the discharge mechanism (3) and the outlet rolling electrode group (2), and the strip being rollingly connected to the outlet rolling electrode group (2); The inlet-end rolling electrode group (5), the strip material and the outlet-end rolling electrode group (2) form an electric pulse circuit.

2. The current-assisted honeycomb panel manufacturing device of difficult-to-deform alloy according to claim 1, characterized in that: It also includes a material receiving mechanism (1), wherein the material receiving mechanism (1) includes: A receiving conveyor belt (104), the receiving conveyor belt (104) being connected to the rolling electrode group (2) at the outlet end; A receiving strip limiting frame (102), the receiving strip limiting frame (102) is fixedly arranged on the first frame and close to the upper surface of the receiving conveyor belt (104), the first frame is fixedly connected to the roller bending device, and the receiving strip limiting frame (102) defines a first strip channel; A material receiving rubber roller (103), wherein one end of the material receiving strip limiting frame (102) away from the material discharging mechanism (3) expands outwards to form a first expansion portion, and the material receiving rubber roller (103) is arranged on the inner side surface of the first expansion portion.

3. The current-assisted honeycomb panel manufacturing device of difficult-to-deform alloy according to claim 2, characterized in that: It also comprises a material collection position limiting auxiliary plate (101), the material collection position limiting auxiliary plate (101) is arranged to cover the first strip channel, and one end of the material collection position limiting auxiliary plate (101) away from the discharge mechanism (3) is bent upward.

4. The current-assisted honeycomb panel manufacturing device of difficult-to-deform alloy according to claim 2, characterized in that: The outlet end rolling electrode group (2) comprises: An outlet rolling electrode (201), wherein there are two outlet rolling electrodes (201), and the two outlet rolling electrodes (201) are vertically arranged and spaced apart to form a longitudinal strip channel, wherein the longitudinal strip channel is respectively connected to the discharging mechanism (3) and the receiving conveyor belt (104), and the longitudinal strip channel corresponds to the first strip channel; A support frame (203), the support frame (203) being arranged horizontally and fixedly connected to the first frame, the support frame (203) being provided with two groups of hinged parts, each group of hinged parts comprising two first connecting rods (202) arranged in parallel; the outlet end rolling electrode (201) being hingedly connected to one end of two first connecting rods (202) of the same group of hinged parts via a bottom plate; A roller connecting rod (205), the roller connecting rod (205) being slidably connected to the support frame (203) along the strip conveying direction, the roller connecting rod (205) being hinged to the bottom plates corresponding to the two outlet-end rolling electrodes (201) respectively via a second connecting rod (204); A first torsion spring (2022), wherein the first torsion spring (2022) is fixedly connected to the other end of the first connecting rod (202) via a first threaded screw (2021), the first connecting rod (202) is hinged to the support frame (203) via the first threaded screw (2021) and the first torsion spring (2022), and the first torsion spring (2022) has an elastic tendency to bring the two outlet end rolling electrodes (201) closer to each other.

5. The current-assisted honeycomb panel manufacturing device of difficult-to-deform alloy according to claim 4, characterized in that: The discharging mechanism (3) comprises: a discharge conveyor belt (303), one end of the discharge conveyor belt (303) being connected to the discharge end of the roller pressing mechanism, and the other end of the discharge conveyor belt (303) being connected to the longitudinal strip channel; an outgoing strip limiting frame (301), the outgoing strip limiting frame (301) being fixedly arranged on the first frame and close to the upper surface of the outgoing conveyor belt (303), the outgoing strip limiting frame (301) defining a second strip channel, the second strip channel corresponding to the longitudinal strip channel; A discharge rubber roller (302), wherein one end of the discharge strip limiting frame (301) away from the rolling mechanism expands outward to form a second expansion portion, and the discharge rubber roller (302) is arranged on the inner side surface of the second expansion portion.

6. The current-assisted honeycomb panel manufacturing device of difficult-to-deform alloy according to claim 5, characterized in that: The discharging mechanism (3) further comprises: A mounting seat (304) is arranged between the discharge conveyor belt (303) and the discharge end of the roller pressing mechanism. A booster wheel (305) is arranged inside the mounting seat (304). The booster wheel (305) is driven by an auxiliary material receiving motor (306). The booster wheel (305) can drive the strip material to move from the discharge end of the roller pressing mechanism to the discharge conveyor belt (303).

7. The current-assisted honeycomb panel manufacturing device of difficult-to-deform alloy according to claim 1, characterized in that: The feeding mechanism (4) comprises: A feeding conveyor belt (401), one end of the feeding conveyor belt (401) being connected to the inlet end rolling electrode group (5); a feed strip limiting frame (404), the feed strip limiting frame (404) being fixedly arranged on the second frame (505) and close to the upper surface of the feed conveyor belt (401), the second frame (505) being fixedly connected to the roller bending device, and the feed strip limiting frame (404) defining a third strip channel; A feeding rubber roller (402), wherein one end of the feeding strip limiting frame (404) close to the inlet end fixed electrode group expands outward to form a third expansion portion, and the feeding rubber roller (402) is arranged on the inner side surface of the third expansion portion.

8. The current-assisted honeycomb panel manufacturing device of difficult-to-deform alloy according to claim 7, characterized in that: The feeding mechanism (4) further comprises: A belt-pressing wheel (405) is rotatably mounted on a mounting frame, wherein the mounting frame is fixedly connected to a feed belt limiting frame (404) via a tension spring (403), wherein the tension spring (403) has an elastic tendency to move the belt-pressing wheel (405) closer to the feed conveyor belt (401).

9. The current-assisted honeycomb panel manufacturing device of difficult-to-deform alloy according to claim 7, characterized in that: The inlet end rolling electrode group (5) comprises: An inlet end rolling electrode, wherein two of the inlet end rolling electrodes are arranged on the second frame (505), the two inlet end rolling electrodes are arranged horizontally and spaced apart to form a transverse strip channel, the transverse strip channel is respectively connected to the feed end of the rolling mechanism and the feed conveyor belt (401), and the transverse strip channel corresponds to the third strip channel; The inlet-end rolling electrode comprises a fixed rolling electrode (504) and a movable rolling electrode (503); the fixed rolling electrode (504) is fixedly arranged on the second frame (505) via a stepped shaft (5041), a bearing (5042) and a bearing seat (5043); two third connecting rods (501) are arranged in parallel on the second frame (505); one end of the third connecting rod (501) is hinged to the second frame (505) via a second threaded screw (5012) and a second torsion spring (5011); The other ends of the two third connecting rods (501) are hinged to the transverse plate, the transverse plate is provided with a first limiting groove along its length direction, the second frame (505) is provided with two second limiting grooves along the longitudinal direction, the movable rolling electrode (503) is fixedly connected to the tripod connecting roller (502), the three bottom feet of the tripod connecting roller (502) are respectively slidably connected to the first limiting groove and the two second limiting grooves, and the second torsion spring (5011) has an elastic tendency to bring the movable rolling electrode (503) closer to the fixed rolling motor.

10. A method for preparing a honeycomb panel of a difficult-to-deform alloy by current-assisted heating, characterized in that: The following steps are involved: An inlet rolling electrode group (5) and an outlet rolling electrode group (2) are respectively arranged at the feed end and the discharge end of the rolling mechanism, and the strip is rollingly connected to the inlet rolling electrode group (5) and the outlet rolling electrode group (2), respectively. The inlet rolling electrode group (5), the strip and the outlet rolling electrode group (2) form an electric pulse circuit, and when the roll bending device rolls the strip through the rolling mechanism, an electric pulse is output to the strip.

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