A pulse current assisted strip stamp forming apparatus

Abstract

This invention discloses a pulsed current-assisted strip stamping forming device, relating to the field of composite metal strip processing technology, to solve the problem of how to prepare reliably bonded composite strips under small deformation conditions. The pulsed current-assisted strip stamping forming device includes: a bearing device with a bearing surface, a first electrode disposed on the bearing surface, and at least two metal strips to be bonded stacked on the first electrode. A moving device is disposed on the bearing surface, and a pulsed current-assisted stamping device is disposed on the moving device, positioned above the first electrode. The moving device is used to move the pulsed current-assisted stamping device to or away from the metal strips, and a pulse power supply is electrically connected to the pulsed current-assisted stamping device and the first electrode. This invention achieves the preparation of reliably bonded composite strips under small deformation conditions by simultaneously applying pulsed current and stamping force to the area of ​​contact by the pulsed current-assisted stamping device.

Description

Technical Field

[0001] This invention relates to the field of composite metal strip processing technology, and in particular to a pulse current assisted strip stamping forming equipment. Background Technology

[0002] Metal layered composite materials have broad application prospects in aerospace, transportation, and electronic communications due to their ability to combine the performance advantages of each component material. Metal layered composite materials can be used to form composite strips.

[0003] In existing industrial manufacturing systems, rolling composite strip technology has always been the core process for preparing composite strips due to its high production efficiency and large-scale manufacturing advantages. Under large deformation rolling conditions, extremely high rolling forces are applied to achieve bonding between strips; while under small deformation rolling conditions, initial mechanical interlocking between strips is mainly achieved through reduction force, with appropriate post-processing steps used to regulate interface properties according to actual service requirements. To further improve process continuity while maintaining forming efficiency, exploring methods for preparing reliably bonded composite strips under small deformation conditions has become the core objective of current process optimization.

[0004] Therefore, the core objective of optimizing the current process is to find a reliable way to prepare composite strips under small deformation conditions. Summary of the Invention

[0005] The purpose of this invention is to provide a pulse current-assisted strip stamping forming device for preparing composite strips with reliable interfacial bonding under small deformation conditions.

[0006] To achieve the above objectives, the present invention provides a pulsed current-assisted strip stamping forming apparatus. This apparatus includes a carrier device, a first electrode, a moving device, a pulsed current-assisted stamping device, and a pulsed power supply. The carrier device has a carrier surface, and the first electrode is disposed on the carrier surface. At least two metal strips to be joined are stacked on the first electrode, which applies a pulsed current to the metal strips. The moving device is disposed on the carrier surface, and the pulsed current-assisted stamping device is disposed on the moving device. The pulsed current-assisted stamping device is located above the first electrode. The moving device is used to move the pulsed current-assisted stamping device to or away from the metal strips. The pulsed current-assisted stamping device applies a pulsed current to the contacting metal strip and stamps the metal strip. The pulsed power supply is electrically connected to the pulsed current-assisted stamping device and the first electrode.

[0007] In one implementation, the pulsed current assisted stamping device includes: A stamped structure is mounted on the moving device; The fixed structure has a first through groove that penetrates the fixed structure along its thickness direction; The second electrode is disposed on the fixed structure and located in the first through groove; the free end of the stamping structure is interference-fitted with the first groove of the second electrode; the pulse power supply is electrically connected to the second electrode through the stamping structure, and applies pulse current and stamping force to the abutting metal strip through the second electrode; A clamping structure, mounted on a fixed structure, is used to clamp metal strips.

[0008] In one implementation, the stamping structure includes: The first connector is disposed on the mobile device; The punch head has a first end fixedly connected to a first connector; the second end of the punch head is interference-fitted with a first groove on a second electrode. The first conductive element is located between the first connector and the stamping head; A first conductor is disposed within a first connector, and the first conductive element is electrically connected to a pulse power supply through the first conductor; the second electrode is electrically connected to the first conductive element through a stamping head.

[0009] In one implementation, an insulating element is wrapped around the side of the second end of the punch head; both the second end of the punch head and the insulating element are located in the first groove, and the end face of the punch head abuts against the second electrode. Both the fixing structure and the first connecting component are made of insulating material.

[0010] In one implementation, the second electrode includes a first substrate and a plurality of first protrusions; the plurality of first protrusions are disposed on a first surface of the first substrate, and the second surface of the first substrate faces the stamping structure; the plurality of first protrusions are continuously arranged in the same direction to form a strip-shaped corrugated structure. The pulse current assisted stamping device also includes a heating structure, which is disposed on the fixed structure and / or clamping structure.

[0011] In one implementation, the pulse current assisted strip stamping forming equipment further includes: a grinding device and a pressing device disposed on the bearing surface; the grinding device is used to grind the metal strip; the pressing device is disposed opposite to the grinding device along the length direction of the metal strip; the pressing device is used to press a portion of the metal strip located on the first electrode.

[0012] In one implementation, the pressing device includes: The first driving component is fixedly connected to the bearing surface; the first driving component has a telescopic driving end. The pressing component is connected to the telescopic drive end. The first drive component is used to drive the pressing component to press or move away from the metal strip. The first guide member is disposed on the bearing surface; the two first guide members are disposed opposite each other, and the metal strip is located between the two first guide members; the two ends of the pressing member are respectively guided and connected to the two first guide members; the first guide member has a receiving space, and the first driving member is located in the receiving space.

[0013] In one implementation, the pulse current-assisted strip stamping forming equipment further includes: a second driving component; The telescopic device and the grinding device are vertically and vertically mounted at one end of the telescopic device; the telescopic device is used to drive the grinding device to reciprocate along the length of the metal strip and to push the composite strip formed by at least two metal strips to move so that the composite strip is separated from the bearing surface. A connecting device is disposed on the bearing surface; a portion of the telescopic device is disposed within the connecting device; a second driving member is driven to connect with the connecting device, so that the connecting device drives the telescopic device to reciprocate along the length direction of the metal strip; A drive unit is mounted on the connecting device; the drive unit is connected to the telescopic device and is used to drive the telescopic device to move up and down along the height direction of the connecting device.

[0014] In one implementation, the telescopic device includes: The telescopic structure has a first guide hole that penetrates the telescopic structure along its length; the first connecting rod of the grinding device is disposed in the first guide hole; the third driving member is driven to connect with the first connecting rod so that the first connecting rod drives the grinding device to rise and fall along the height direction of the first guide hole. The push block is located on the side of the telescopic structure facing the grinding device, and the push block is close to the bearing surface; Two second connectors are disposed on the side of the telescopic structure opposite to the grinding device; the two second connectors are arranged opposite each other and spaced apart along the length of the telescopic structure; the second connectors are located inside the connecting device and connected to the connecting device. The drive unit is connected to the telescopic structure and / or two second connecting parts.

[0015] In one implementation, the connecting device includes: A connecting structure with a receiving space; two second connecting members are located in the receiving space; a telescopic structure is located at one end of the connecting structure; a driving device is disposed on the outer surface of the connecting structure. A rack is located between two second connectors; the length extension direction of the rack is consistent with the length extension direction of the second connectors. The second connecting rod passes through the through hole in the rack, and its two ends are respectively connected to two second connecting parts; The gear meshes with the rack; the output shaft of the second drive component is coaxially connected to the gear.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In the pulse current-assisted strip stamping forming equipment provided by this invention, at least two metal strips to be bonded are stacked on a first electrode. When the pulse current-assisted stamping device comes into contact with the uppermost metal strip, a pulse power supply is activated. At this time, the pulse power supply, the pulse current-assisted stamping device, the metal strips, and the first electrode form a conductive circuit. The first electrode applies a pulse current to its area, and the pulse current-assisted stamping device simultaneously applies a pulse current and a stamping force to the area it is in contact with, thereby metallurgically bonding the processed areas of the two stacked and contacting metal strips. It should be noted that the dimensions of the pulse current-assisted stamping device and the two metal strips can be set according to actual needs. For example, when the dimensions of the metal strips match the dimensions of the pulse current-assisted stamping device, the pulse current-assisted stamping device can metallurgically bond all areas of the two metal strips together at once to obtain the desired composite strip. In practical applications, when using the pulsed current-assisted stamping device of this invention to stamp metal strips, the applied stamping force is controlled to ensure that the stress on the metal strip does not exceed its allowable limit, thus preventing severe plastic deformation. This allows the invention to produce composite strips under small deformation conditions. Furthermore, this invention achieves selective heating at the interface through the local Joule heating and electroplastic effects of the pulsed current. Compared to traditional overall heat treatment, this invention reduces energy consumption during composite strip production. Moreover, the pulsed current enhances material plasticity, enabling reliable metallurgical bonding of the metal strip with a small reduction. This allows the invention to produce composite strips with reliable interfacial bonding under small deformation conditions. Additionally, compared to the prior art where composite strips are formed through two separate processes—rolling (e.g., small deformation rolling) followed by post-processing—the pulsed current-assisted stamping device of this invention simultaneously applies pulsed current and stamping force to the contact area. This results in a more continuous process, improving process continuity and shortening the production cycle. Furthermore, the present invention uses a combination of pulsed current and punching force to process and prepare composite strips, which enables the present invention to improve the bonding performance of the interface while realizing the forming of composite strips, thereby obtaining a reliable bonded composite strip.

[0017] In summary, this invention utilizes the aforementioned forming equipment to process composite strips, achieving a systematic integration of pulse current-assisted forming technology, stamping process, and additive manufacturing mode. This enables high-quality, layer-by-layer bonding of metal strips under small deformation conditions, thereby obtaining a reliably bonded composite strip. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the pulse current assisted strip stamping forming equipment in an embodiment of the present invention. Figure 1 ; Figure 2 As described in the embodiments of the present invention Figure 1 Enlarged structural diagram of a portion of the area Figure 1 ; Figure 3 This is a schematic diagram of the overall structure of the pulse current assisted strip stamping forming equipment in an embodiment of the present invention. Figure 2 ; Figure 4 This is a top view of the pulse current-assisted strip stamping forming equipment in an embodiment of the present invention; Figure 5 As described in the embodiments of the present invention Figure 4 Partial structural diagram; Figure 6 As described in the embodiments of the present invention Figure 5 A magnified schematic diagram of a portion of the structure of the first electrode. Figure 7 As described in the embodiments of the present invention Figure 5 PP cross-sectional view of the middle structure; Figure 8 As described in the embodiments of the present invention Figure 5 AA section view of the middle structure; Figure 9 This is a partial structural schematic diagram of the pulse current-assisted strip stamping forming equipment in an embodiment of the present invention; Figure 10 As described in the embodiments of the present invention Figure 9 Partial structural diagram; Figure 11 This is a side view of the pulse current-assisted strip stamping forming equipment in an embodiment of the present invention. Figure 1 ; Figure 12 As described in the embodiments of the present invention Figure 11 Enlarged schematic diagram of the R region; Figure 13 As described in the embodiments of the present invention Figure 1 Enlarged structural diagram of a portion of the area Figure 2 ; Figure 14 This is a schematic diagram of the structure of the pulse current assisted stamping device and the third connecting member combined in an embodiment of the present invention; Figure 15 As described in the embodiments of the present invention Figure 14 Side view of the middle structure; Figure 16 As described in the embodiments of the present invention Figure 15 CC section view of the middle structure; Figure 17 This is a partial structural schematic diagram of the pulse current assisted stamping device in an embodiment of the present invention; Figure 18 As described in the embodiments of the present invention Figure 17 Side view of the middle structure; Figure 19 As described in the embodiments of the present invention Figure 18 BB section view of the middle structure; Figure 20 As described in the embodiments of the present invention Figure 17 A bottom view of the middle structure; Figure 21 This is a schematic diagram of the structure of the first type of second electrode in an embodiment of the present invention; Figure 22 This is a side view of the first type of second electrode in an embodiment of the present invention; Figure 23 As described in the embodiments of the present invention Figure 22 DD cross-sectional view of the middle structure; Figure 24 This is an enlarged schematic diagram of a portion of the structure of the second electrode in the first embodiment of the present invention; Figure 25 This is a side view of the second type of second electrode in an embodiment of the present invention; Figure 26 This is a side view of the pulse current-assisted strip stamping forming equipment in an embodiment of the present invention. Figure 2 ; Figure 27 As described in the embodiments of the present invention Figure 26 Enlarged schematic diagram of region N in the middle; Figure 28 This is a partial structural schematic diagram of the pulse current-assisted strip stamping forming equipment in an embodiment of the present invention; Figure 29 As described in the embodiments of the present invention Figure 28 Side view of the middle structure; Figure 30 This is a schematic diagram of the structure of the telescopic device and the push block combined in an embodiment of the present invention; Figure 31 This is a cross-sectional view of the telescopic device and the connecting device combined in an embodiment of the present invention; Figure 32 As described in the embodiments of the present invention Figure 28 Top view of the structure; Figure 33 As described in the embodiments of the present invention Figure 28 A front view of the structure.

[0019] Figure label: 1-Bearing device, 10-Bearing surface, 11-Bearing plate, 12-Support column, 13-First sub-region, 14-Second sub-region, 15-Third sub-region; 2-First electrode, 20-Second substrate, 21-Third protrusion, 3-Moving device, 30-First linear motion structure, 300-Second guide, 301-First moving component; 31-Second linear motion structure, 310-Ball screw, 311-Fifth drive component, 312-Bracket; 32-Third linear motion structure 320-Third guide component, 321-Second moving component, 322-Connecting plate; 4-Pulse current assisted stamping device, 40-Stamping structure, 400-First connecting component, 401-Stamping head, 402-First conductive component, 403-First wire, 404-First connecting pin; 41-Fixing structure, 42-Second electrode, 420-First groove, 421-First base, 422-First protrusion; 43-Clamping structure, 430-First clamping component, 431-Second clamping component 432-Insulating ring, 433-Fixing component; 44-Heating structure, 440-Heating component, 441-Second wire; 45-Insulating component, 46-Third connecting component, 47-Second connecting pin; 5-Pulse power supply, 6-Control device, 7-Grinding device, 70-Grinding roller, 71-First connecting rod, 72-Third driving component, 73-Seventh driving component, 74-Third connecting rod, 75-Fourth connecting rod; 8-Pressing device, 80-First driving component, 800-Drive body, 81 - Pressing component, 82- First guide component; 90- Second driving component, 91- Telescopic device, 910- Telescopic structure, 911- Second connecting component, 912- First guide hole, 913- Guide groove, 914- Push block; 92- Connecting device, 920- Connecting structure, 921- Rack, 922- Gear, 923- Second guide hole, 924- Second connecting rod; 93- Driving device; 94- Conductive component, 940- Second conductive component, 941- Insulating sleeve, 95- Snap-fit ​​component. Detailed Implementation

[0020] To facilitate a clear description of the technical solutions in the embodiments of the present invention, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. For example, the first threshold and the second threshold are merely used to distinguish different thresholds and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" are not necessarily different.

[0021] It should be noted that in this invention, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0022] In this invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a combination of a and b, a combination of a and c, a combination of b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0023] In conjunction with the background technology section, the rolling composite method not only suffers from high energy consumption, but also from long production cycles and severe interface oxidation due to the need for enormous rolling forces and prolonged annealing. Furthermore, in addition to using the rolling composite method to produce composite strips, existing technologies also employ hot pressing composite methods or lamination consolidation techniques based on additive manufacturing concepts.

[0024] However, the hot-pressing composite method suffers from uneven pressure and temperature distribution, leading to large fluctuations in interfacial bonding strength and easy warping and deformation of the strip. For lamination consolidation technology based on additive manufacturing, existing technologies often require high-temperature heating and high-pressure application to the entire lamination component. Therefore, this technology still suffers from drawbacks such as high energy consumption, wide heat-affected zone, easy formation of brittle intermetallic compounds, and residual stress concentration.

[0025] To address at least one of the aforementioned technical problems, the present invention provides a pulse current-assisted strip stamping forming apparatus. See also... Figure 1 and Figure 2The pulse current-assisted strip stamping forming equipment includes a carrier device 1, a first electrode 2, a moving device 3, a pulse current-assisted stamping device 4, and a pulse power supply 5. The carrier device 1 has a carrier surface 10, and the first electrode 2 is disposed on the carrier surface 10. At least two metal strips to be joined are stacked on the first electrode 2, which is used to apply a pulse current to the metal strips. The moving device 3 is disposed on the carrier surface 10, and the pulse current-assisted stamping device 4 is disposed on the moving device 3. Along the height direction of the carrier device 1, the pulse current-assisted stamping device 4 is located above the first electrode 2. The moving device 3 is used to move the pulse current-assisted stamping device 4 to or away from the metal strips. The pulse current-assisted stamping device 4 applies a pulse current to the contacting metal strip and stamps the metal strip. The pulse power supply 5 is electrically connected to the pulse current-assisted stamping device 4 and the first electrode 2.

[0026] See Figure 1 and Figure 2Compared with the prior art, the beneficial effects of the present invention are as follows: In the pulse current assisted strip stamping forming equipment provided by the present invention, at least two metal strips to be bonded are stacked on the first electrode 2. When the pulse current assisted stamping device 4 abuts against the uppermost metal strip, the pulse power supply 5 is activated. At this time, the pulse power supply 5, the pulse current assisted stamping device 4, the metal strips, and the first electrode 2 form a conductive circuit. The first electrode 2 applies a pulse current to its area, and the pulse current assisted stamping device 4 simultaneously applies a pulse current and a stamping force to the area it abuts, thereby metallurgically bonding the processed areas of the two stacked and contacting metal strips. It should be noted that the dimensions of the pulse current assisted stamping device 4 and the dimensions of the two metal strips can be set according to actual needs. For example, when the dimensions of the metal strips match the dimensions of the pulse current assisted stamping device 4, the pulse current assisted stamping device 4 can metallurgically bond all areas of the two metal strips together at one time to obtain the required composite strip. In practical applications, when the pulsed current-assisted stamping device 4 of this invention is used to stamp the metal strip, the applied stamping force is controlled to ensure that the stress on the metal strip does not exceed its allowable limit, thus preventing severe plastic deformation. This allows the invention to produce composite strips under small deformation conditions. Furthermore, this invention achieves selective heating at the interface through the local Joule heating and electroplastic effects of the pulsed current. Compared to traditional overall heat treatment, this invention reduces energy consumption during composite strip production. Moreover, the pulsed current enhances the material's plasticity, enabling reliable metallurgical bonding of the metal strip with a small reduction. This allows the invention to produce composite strips with reliable interfacial bonding under small deformation conditions. Additionally, compared to the prior art where composite strips are formed through two separate processes—rolling (e.g., small deformation rolling) followed by post-processing—the pulsed current-assisted stamping device 4 of this invention simultaneously applies pulsed current and stamping force to the contact area. This makes the process more continuous, improving process continuity and shortening the production cycle. Furthermore, the present invention uses a combination of pulsed current and punching force to process and prepare composite strips, which enables the present invention to improve the bonding performance of the interface while realizing the forming of composite strips, thereby obtaining a reliable bonded composite strip.

[0027] In summary, this invention utilizes the aforementioned forming equipment to process composite strips, achieving a systematic integration of pulsed current-assisted forming technology, stamping process, and additive manufacturing mode. This enables high-quality, layer-by-layer bonding of metal strips, resulting in reliably bonded composite strips. Furthermore, the pulsed current-assisted forming technology leverages the skin effect, Joule heating effect, and electroplastic effect generated when high-density pulsed current passes through the material, thereby improving plasticity.

[0028] As one possible implementation, the materials of the two adjacent metal strips to be joined can be the same or different. The pulse current-assisted strip stamping forming equipment does not limit the materials of the two adjacent metal strips to be joined, and this pulse current-assisted strip stamping forming equipment can realize the composite manufacturing of dissimilar metals.

[0029] The dimensions of the first electrode 2 and the metal strip can be set according to the actual situation and are not specifically limited here. For example, along the height direction of the supporting device 1, the orthographic projection of the metal strip is completely located within the first electrode 2, and the area of ​​the orthographic projection of the metal strip is less than or equal to the area of ​​the side of the first electrode 2 facing the metal strip.

[0030] As one possible implementation, see Figure 1 The supporting device 1 includes a supporting plate 11 with a supporting surface 10 and four supporting columns 12 connected to the supporting plate 11, the four supporting columns 12 being spaced apart. At this time, the area below the supporting plate 11 is a hollow area, which can be used to place the pulse power supply 5, saving space.

[0031] Furthermore, each support column 12 is fixedly connected to the ground by bolts or other fasteners to ensure the stability of the pulse current assisted strip stamping forming equipment during actual operation, thereby ensuring the quality of the combination of multiple metal strips.

[0032] As one possible implementation, see Figure 1 The pulse current assisted strip stamping forming equipment also includes a control device 6, which is connected to the pulse power supply 5. The control device 6 is used to adjust the magnitude and frequency of the pulse current provided by the pulse power supply 5.

[0033] In some embodiments, the effective value of the pulse current output by the pulse power supply 5 is adjusted by the control device 6 to be from 20A to 75A, and the pulse frequency is set to from 50Hz to 1000Hz. For example, the effective value of the pulse current can be 20A, 25A, 30A, 35A, 40A, 45A, 50A, 55A, 60A, 65A, 70A, or 75A, etc. The pulse frequency can be 50Hz, 100Hz, 200Hz, 300Hz, 400Hz, 500Hz, 600Hz, 700Hz, 800Hz, 900Hz, or 1000Hz, etc.

[0034] See Figure 3 The specific correspondence between the positive and negative terminals of the aforementioned pulse power supply 5 and the pulse current-assisted stamping device 4 and the first electrode 2 is not specifically limited here, as long as it meets the actual working requirements. In some embodiments, the negative terminal of the pulse power supply 5 is electrically connected to the first electrode 2, and the positive terminal of the pulse power supply 5 is electrically connected to the pulse current-assisted stamping device 4.

[0035] See Figure 3 In some embodiments, the pulse current-assisted strip stamping forming equipment further includes a conductive component 94, which includes a second conductive element 940 and an insulating sleeve 941. The insulating sleeve 941 is wrapped around the second conductive element 940, and the pulse power supply 5 is electrically connected to the second conductive element 940 via a wire. The insulating sleeve 941 is used to prevent electric shock to workers and ensure their safety. For example, the second conductive element 940 can be a conductive sheet, and the insulating sleeve 941 can be made of ceramic.

[0036] Along the thickness direction of the support plate 11, a second through groove is formed on the support plate 11. The conductive component 94 is detachably mounted on the side of the support plate 11 opposite to the support surface 10 via a snap-fit ​​member 95. Specifically, the two snap-fit ​​members 95, which are arranged opposite to each other, are used to snap-fit ​​the insulating sleeve 941, and the snap-fit ​​members 95 are fixed on the support plate 11.

[0037] See Figures 3 to 10 In one alternative embodiment, the opening of the second through slot can be smaller than the area of ​​the side of the second conductive element 940 facing the support plate 11, and the second conductive element 940 is in contact with the surface of the support plate 11. The first electrode 2 is located in the second through slot and is disposed on the second conductive element 940, and the pulse power supply 5 is electrically connected to the first electrode 2 through the second conductive element 940. The dimensions of the first electrode 2 and the second conductive element 940 can be set according to actual conditions and are not specifically limited here. For example, the size of the first electrode 2 is less than or equal to the size of the second conductive element 940.

[0038] In one alternative embodiment, the thickness of the first electrode 2 may be greater than the depth of the second through groove, in which case the surface of the first electrode 2 used to support the metal strip protrudes from the bearing surface 10.

[0039] The aforementioned control device 6 can be a PLC (Programmable Logic Controller). The specific structure and corresponding functions of the control device 6 are not specifically limited here and can be set according to the actual situation.

[0040] As one possible implementation, see Figure 1The moving device 3 includes: two first linear motion structures 30 distributed opposite to each other along the width direction G of the bearing surface 10; two second linear motion structures 31 distributed opposite to each other along the width direction G of the bearing surface 10; and a third linear motion structure 32 located between the two second linear motion structures 31. Each second linear motion structure 31 is connected to a corresponding first linear motion structure 30. The first linear motion structures 30, second linear motion structures 31, and third linear motion structures 32 have different motion directions. A pulse current assisted stamping device 4 is disposed on the third linear motion structure 32.

[0041] The specific structures of the first linear motion structure 30, the second linear motion structure 31, and the third linear motion structure 32 are described below in one possible implementation. It should be noted that the following description is for understanding purposes only and is not intended to limit the specific implementation.

[0042] In one alternative approach, see Figure 1 The first linear motion structure 30 includes a second guide member 300, a first moving member 301, and a fourth driving member. The second guide member 300 is disposed on the bearing surface 10 and extends along the length direction E of the bearing surface 10. The first end face of the first moving member 301 is slidably connected to the second guide member 300, and the second end face of the first moving member 301 is connected to the second linear motion structure 31. The fourth driving member is connected to one end of the first moving member 301 and is used to drive the first moving member 301 to move.

[0043] For example, the fourth driving component can be a stepper motor, the first moving component 301 can be a slider or a moving wheel, and the second guiding component 300 can be a guide rail or a slide rail.

[0044] In one alternative approach, see Figure 1 The second linear motion structure 31 includes a ball screw 310, a screw nut, a fifth drive member 311, and a bracket 312. Along the height direction F of the bracket 312, the first end of the bracket 312 is disposed on the second end face of the first moving member 301, and the fifth drive member 311 is disposed on the second end of the bracket 312. One end of the ball screw 310 is poweredly connected to the fifth drive member 311, and the other end of the ball screw 310 is disposed on the bracket 312 via a bearing seat. The screw nut is disposed on the ball screw 310, and the third linear motion structure 32 is connected to the screw nut. The fifth drive member 311 drives the third linear motion structure 32 to reciprocate along the axial direction of the ball screw 310 via the ball screw 310, and the axial direction of the ball screw 310 is consistent with the height direction of the bracket 312. The aforementioned fifth drive member 311 can be a drive motor.

[0045] In one alternative approach, see Figure 1 , Figure 11 and Figure 12The third linear motion structure 32 includes a third guide member 320, a second moving member 321, a connecting plate 322, and a sixth driving member. Along the length of the connecting plate 322, both ends of the connecting plate 322 are connected to two lead screw nuts located on either side. The third guide member 320 is disposed on the connecting plate 322, and its length extension direction is consistent with the length direction of the connecting plate 322. The first end face of the second moving member 321 is slidably connected to the third guide member 320, and the second end face of the second moving member 321 is connected to the pulse current assisted stamping device 4. The sixth driving member is connected to one end of the second moving member 321 and is used to drive the second moving member 321 to move.

[0046] For example, the sixth driving component can be a stepper motor, the second moving component 321 can be a slider or a moving wheel, and the third guiding component 320 can be a guide rail or a slide rail.

[0047] In summary, see Figure 1 , Figure 11 and Figure 12 The moving device 3 allows the pulse current-assisted stamping device 4 to move in three different directions, enabling it to process most or all areas of the metal strip. In this case, the pulse current-assisted strip stamping equipment is no longer limited by the size of the metal strip, allowing for the production of large-size composite strips. Furthermore, the moving device 3 allows for more detailed regional division of the metal strip, further improving the processing quality of the pulse current-assisted stamping device 4, thereby enhancing the metallurgical bonding quality and ultimately improving the quality of the final composite strip.

[0048] See Figure 1 , Figure 11 and Figure 12 The length direction of the bearing surface 10, the axial direction of the ball screw 310, and the length extension direction of the third guide member 320 are different directions. In one optional embodiment, the three directions may or may not be perpendicular to each other. When the three directions are perpendicular to each other, they can be any three mutually perpendicular directions. For example, in a three-dimensional coordinate system O-XYZ, the length direction of the bearing surface 10 can be the X-axis direction, the axial direction of the ball screw 310 can be the Z-axis direction, and the length extension direction of the third guide member 320 can be the Y-axis direction.

[0049] As one possible implementation, see Figure 1 , Figures 12 to 20The pulse current assisted stamping device 4 includes a stamping structure 40, a fixing structure 41, a second electrode 42, and a clamping structure 43. The stamping structure 40 is mounted on the moving device 3. Along the thickness direction K of the fixing structure 41, the fixing structure 41 has a first through slot penetrating the fixing structure 41. The second electrode 42 is mounted on the fixing structure 41 and located within the first through slot. The free end of the stamping structure 40 is interference-fitted with the first groove 420 of the second electrode 42. The pulse power supply 5 is electrically connected to the second electrode 42 through the stamping structure 40, and applies pulse current and stamping force to the abutting metal strip through the second electrode 42. The clamping structure 43 is mounted on the fixing structure 41 and is used to clamp the metal strip.

[0050] As one possible implementation, see Figures 13 to 17 The stamping structure 40 includes: a first connector 400, a stamping head 401, a first conductive element 402, and a first wire 403. The first connector 400 is disposed on the moving device 3. The first end of the stamping head 401 is fixedly connected to the first connector 400, and the second end of the stamping head 401 is interference-fitted with the first groove 420 of the second electrode 42. The first conductive element 402 is located between the first connector 400 and the stamping head 401. The first wire 403 is disposed within the first connector 400. The first conductive element 402 is electrically connected to the pulse power supply 5 through the first wire 403. The second electrode 42 is electrically connected to the first conductive element 402 through the stamping head 401.

[0051] In actual use, when the pulse power supply 5 is turned on, the pulse power supply 5, the first wire 403, the first conductive element 402, the stamping head 401, the second electrode 42, the metal strip and the first electrode 2 form a conductive circuit.

[0052] In some embodiments, see Figure 16 The first end of the stamping head 401 is connected to the first connecting piece 400 via the first connecting pin 404.

[0053] See Figure 16 Along the height direction of the first connector 400, the first connector 400 has a second groove. One end of the stamping head 401 and the first conductive element 402 are both located in the second groove, and the first conductive element 402 is located between the first connector 400 and the stamping head 401. The first connecting pin 404 passes through both the first connector 400 and the stamping head 401, connecting the stamping head 401 and the first connector 400 together.

[0054] See Figures 12 to 16 As described above, the stamping structure 40 can be mounted on the moving device 3 via the third connector 46 and the second connecting pin 47. For example, the first connector 400 is mounted on the moving device 3 via the third connector 46 and the second connecting pin 47.

[0055] In actual use, when the stamping structure 40 needs to be replaced, the third connector 46 remains connected to the moving device 3. Simply separate the stamping structure 40 from the third connector 46. This makes the operation simpler, more convenient, and saves time.

[0056] In one alternative approach, see Figures 12 to 16 The third connector 46 has a third groove, and one end of the first connector 400 is located in the third groove. The second connecting pin 47 passes through both the third connector 46 and the first connector 400, connecting the third connector 46 and the first connector 400 together. The side of the third connector 46 facing away from the first connector 400 is connected to the second end face of the second moving member 321. At this time, the first connector 400 is disposed on the second end face of the second moving member 321 through the third connector 46.

[0057] In accordance with the foregoing description, in this invention, the ball screw 310 is driven to move by the fifth driving member 311 included in the second linear motion structure 31, thereby providing power for the stamping structure 40 to stamp the metal strip.

[0058] In one alternative approach, see Figure 16 The first connector 400, the first connecting pin 404, the third connector 46, and the second connecting pin 47 are all made of insulating materials. For example, the materials of the first connector 400, the first connecting pin 404, the third connector 46, and the second connecting pin 47 can be ceramic, glass, or mica, etc.

[0059] In one alternative approach, see Figure 16 An insulating member 45 is wrapped around the side of the second end of the punch head 401. Both the second end of the punch head 401 and the insulating member 45 are located in the groove. The end face of the second end of the punch head 401 abuts against the second electrode 42.

[0060] At this point, not only can the connection between the stamping head 401 and the second electrode 42 be made more secure, but also, since the side of the second end of the stamping head 401 is wrapped with an insulating member 45, the insulating member 45 restricts the flow of pulse current to the periphery of the stamping head 401, so that most or all of the pulse current flows downward along the axial direction of the stamping head 401, and then the pulse current flows to the second electrode 42 located below the stamping head 401. Based on this, the loss of pulse current can be reduced, the processing efficiency can be improved, and the processing cost can be reduced.

[0061] The structure and shape of the first electrode 2 and the second electrode 42 may be the same or different.

[0062] The following description of the specific structure of the second electrode 42 is based on the example of the second electrode 42. It should be noted that the following description is for understanding purposes only and is not intended to limit the specific application.

[0063] As one possible implementation, see Figures 21 to 24 The second electrode 42 includes a first substrate 421 and a plurality of first protrusions 422. The plurality of first protrusions 422 are disposed on a first surface of the first substrate 421, and the second surface of the first substrate 421 faces the stamping structure 40.

[0064] In one alternative approach, see Figure 24 Multiple first protrusions 422 are arranged continuously in the same direction to form a strip-shaped corrugated structure. That is, the side of the second electrode 42 that abuts against the metal strip is provided with a strip-shaped corrugated structure.

[0065] In some embodiments, see Figure 22 , Figure 24 and Figure 25 Along the height direction of the first protrusion 422, one of the boundary lines of the second electrode 42 is a wavy, zigzag, or pattern composed of arcs and straight lines. The second surface of the substrate is a plane.

[0066] See Figure 24 When one of the boundary lines of the second electrode 42 is a broken line along the height direction of the first protrusion 422, at least two metal strips between the first electrode 2 and the second electrode 42 can be stamped to obtain a composite strip with a corresponding broken line shape.

[0067] See Figure 25 When one of the boundary lines of the second electrode 42 is wavy along the height direction of the first protrusion 422, at least two metal strips between the first electrode 2 and the second electrode 42 can be stamped to obtain a composite strip with a corresponding wavy shape.

[0068] In some embodiments, the first electrode 2 and the second electrode 42 have the same structure and shape. In this case, the feature of the first protrusion 422 on the second electrode 42 cooperates with the corresponding feature on the first electrode 2 to achieve complete contact of at least two metal strips during the stamping process.

[0069] For example, see Figure 10 The first electrode 2 includes a second substrate 20 and third protrusions 21. Multiple third protrusions 21 are disposed on the first surface of the second substrate 20, facing the pulse current-assisted stamping device 4. The multiple third protrusions 21 are continuously arranged in the same direction, forming a strip-shaped corrugated structure.

[0070] In one alternative approach, see Figures 17 to 20The first through groove of the fixing structure 41 has a rectangular longitudinal section, and the second electrode 42 is embedded in the first through groove. Before the first through groove is opened, the shape of the fixing structure 41 can be a cuboid, a cylinder, etc., and there is no specific limitation here, as long as it can meet the actual needs.

[0071] The fixed structure 41 can be made of insulating material, which can prevent workers from getting electric shock and ensure their safety.

[0072] The hardness of the fixing structure 41 can range from 900 HV to 1500 HV. This ensures that the fixing structure 41 will not undergo plastic deformation, fracture, or fatigue failure during actual use, thereby ensuring the clamping capacity of the clamping structure 43 mounted on the fixing structure 41. For example, if the fixing structure 41 is made of rubber, external factors may cause the rubber to soften, leading to a reduction in the clamping force of the clamping structure 43 on the metal strip. This can cause the metal strip to detach from the clamping structure 43, resulting in contamination and damage to the metal strip. However, the fixing structure 41 with a hardness of 900 HV to 1500 HV in this invention can avoid the above situation.

[0073] For example, the hardness of the fixed structure 41 can be 900HV, 1000HV, 1100HV, 1200HV, 1300HV, 1400HV or 1500HV, etc.

[0074] In some embodiments, the stiffness of the fixing structure 41 is 1300 HV.

[0075] In summary, the material used to manufacture the aforementioned fixing structure 41 can be zirconia ceramic, silicon nitride ceramic, alumina ceramic, silicon carbide ceramic, or boron carbide ceramic, etc.

[0076] As one possible implementation, see Figure 13 and Figure 17 The clamping structure 43 includes a first clamping member 430, a second clamping member 431, insulating rings 432 respectively disposed at the clamping ends of the first clamping member 430 and the second clamping member 431, and fixing members 433 for fixing the first clamping member 430 and the second clamping member 431 to the fixing structure 41. The insulating rings 432 prevent electric shock to workers, ensuring their safety. For example, the insulating rings 432 can be made of ceramic, glass, or mica.

[0077] See Figure 13 and Figure 17Along the length of the fixing structure 41, the first clamping member 430 and the second clamping member 431 are arranged opposite to each other and spaced apart. Further, along the length of the fixing structure 41, the first clamping member 430 is opposite to and spaced apart from one side of the fixing structure 41, and the second clamping member 431 is opposite to and spaced apart from the other side of the fixing structure 41.

[0078] The distance between the clamping end of the first clamping member 430 and the side of the fixing structure 41 can be adjusted, and the distance between the clamping end of the second clamping member 431 and the side of the fixing structure 41 can be adjusted to facilitate clamping the metal strip. The method of adjusting these distances depends on the specific structure of the first clamping member 430 and the second clamping member 431. The specific structure of the first clamping member 430 and the second clamping member 431 is not specifically limited here, as long as it can achieve the clamping and release of the metal strip. For example, the first clamping member 430 and the second clamping member 431 can be mechanical grippers or similar devices as used in the prior art.

[0079] Combination Figure 13 and Figure 17 Along the length of the metal strip, the metal strip is sequentially divided into a first region, a second region, and a third region. In actual use, when the metal strip is clamped using the clamping structure 43, the first and third regions of the metal strip are first bent relative to the second region (at this time, the metal strip is roughly U-shaped). Then, the first clamping member 430 and the second clamping member 431 are activated, so that the first region of the metal strip is clamped between the first clamping member 430 and the fixed structure 41, and the third region of the metal strip is clamped between the second clamping member 431 and the fixed structure 41. At this time, the second region of the metal strip is located below the fixed structure 41 and the second electrode 42.

[0080] When the clamping structure 43 releases the metal strip, the clamping ends of the first clamping member 430 and the second clamping member 431 move away from the metal strip, so that the first clamping member 430 and the second clamping member 431 are separated from the first and third regions of the metal strip, at which point the metal strip is released.

[0081] As one possible implementation, see Figure 13 The pulse current assisted stamping device 4 also includes a heating structure 44, which is disposed on the fixing structure 41 and / or the clamping structure 43.

[0082] The heating structure 44 helps to further soften the metal strip, preparing it for the subsequent pulse current action, so as to facilitate the bonding of the two metal strips and improve the bonding force.

[0083] In one alternative approach, see Figure 13The heating structure 44 includes multiple heating elements 440 and multiple second wires 441. The heating elements 440 are respectively disposed on two sides of the fixed structure 41 for assisting in clamping the metal strip. The position of the second wires 441 relative to the heating elements 440 can be selected according to actual conditions, as long as it does not affect the normal operation of the pulse current-assisted strip stamping forming equipment. For example, the second wires 441 can be disposed inside or on the surface of the heating elements 440. Each heating element 440 is correspondingly provided with a second wire 441, and the heating element 440 is electrically connected to the pulse power supply 5 through the second wires 441. It should be noted that... Figure 13 This is merely a schematic diagram to illustrate the structure and connection relationship of the heating element 440 and the second wire 441, and the second wire 441 is not connected to the stamping head 401.

[0084] For example, the heating element 440 can be a copper sheet. When the copper sheet is energized by the pulse power supply 5, the copper sheet heats up, and the heat is transferred to the metal strip through the fixing structure 41 and / or the clamping structure 43. Alternatively, when the heating element 440 comes into contact with the metal strip, the heating element 440 directly transfers the heat to the metal strip, thereby heating the metal strip.

[0085] As one possible implementation, see Figure 1 and Figure 2 The pulse current assisted strip stamping forming equipment also includes: a grinding device 7 and a pressing device 8 disposed on the bearing surface 10.

[0086] The grinding device 7 is used to grind the metal strip, which can increase the surface area of ​​the metal strip and promote the mechanical interlocking and metallurgical bonding of the two metal strips.

[0087] For example, the above-mentioned grinding device 7 includes a grinding roller 70, the outer surface of which has a brush for grinding, and the length of the brush can be set according to the actual situation. For example, when the grinding device 7 only includes the grinding roller 70, the metal strip can be ground manually by holding the grinding roller 70.

[0088] As one possible implementation, see Figure 1 Along the length of the metal strip, the pressing device 8 and the grinding device 7 are arranged opposite each other, with the length direction of the metal strip aligned with the length direction of the first electrode 2. The pressing device 8 is used to press a portion of the metal strip located on the first electrode 2. For example, the pressing device 8 is used to press the end region of the metal strip located on the first electrode 2, or to press any intermediate region of the metal strip. Preferably, the pressing device 8 is used to press the end region of the metal strip located on the first electrode 2.

[0089] In practical use, the grinding device 7 starts grinding the metal strip from the end where the pressing device 8 is located, moving away from the pressing device 8. Under the pressure of the pressing device 8, the probability of the metal strip deviating or moving during grinding is reduced or eliminated, thus avoiding damage to the metal strip and improving grinding quality, facilitating the subsequent bonding of two metal strips. It should be noted that because a portion of the metal strip is pressed by the pressing device 8, this pressed portion does not need to undergo pulse current and pressing action later; this portion is subsequently cut off. Alternatively, the pressing device 8 can be removed after grinding, exposing all areas of the metal strip so that all areas undergo pulse current and pressing action. In this case, it is optional to choose not to cut off the portion of the metal strip corresponding to the pressing device 8; alternatively, this portion can be cut off later.

[0090] In one alternative approach, see Figure 2 The pressing device 8 includes a first driving member 80, a pressing member 81, and a first guide member 82. The first driving member 80 is fixedly connected to the bearing surface 10 and has a telescopic driving end. The pressing member 81 is connected to the telescopic driving end, and the first driving member 80 is used to drive the pressing member 81 to press or move away from the metal strip. The first guide member 82 is disposed on the bearing surface 10, with two first guide members 82 disposed opposite to each other, and the metal strip is located between the two first guide members 82. Both ends of the pressing member 81 are respectively guided and connected to the two first guide members 82, and the first guide member 82 has a receiving space, within which the first driving member 80 is located.

[0091] For example, the first drive element 80 may be a hydraulic cylinder or a pneumatic cylinder.

[0092] In one alternative embodiment, the first drive member 80 includes a drive body 800 and a telescopic rod, the free end of which is connected to the pressing member 81.

[0093] Example 1: The aforementioned drive body 800 can be disposed on the side of the bearing surface 10 facing the pulse current assisted stamping device 4. In this case, the pressing member 81 can press the metal strip by thickening the area corresponding to the metal strip in the pressing member 81.

[0094] Example 2: See Figure 2 and Figure 11 The drive body 800 is fixedly connected to the side of the bearing surface 10 that is away from the pulse current assisted stamping device 4. At this time, the telescopic rod passes through the bearing surface 10 so that the free end of the telescopic rod can be connected to the lower pressing member 81. Since the telescopic rod passes through the bearing surface 10, the free end of the telescopic rod can be flush with the bearing surface so that the lower pressing member 81 can press the metal strip.

[0095] The first guide member 82 can be a C-shaped guide member or a C-shaped guide member. In this case, the first guide member 82 can not only play a guiding role, but also protect the first drive member 80, reduce or avoid the entry of splashed impurities into the first drive member 80 during the grinding process of the grinding device 7 grinding the metal strip, so as to reduce or eliminate the probability of damage to the first drive member 80.

[0096] In one alternative approach, see Figure 2 Along the width direction of the bearing surface 10, at least a portion of the bearing surface 10 may include a first sub-region 13, a second sub-region 14, and a third sub-region 15, with the second sub-region 14 located between the first sub-region 13 and the third sub-region 15. The second sub-region 14 is a working area used to support the first electrode 2, the metal strip, and the composite strip.

[0097] In some embodiments, along the height direction of the support device 1, the thickness of the support surface 10 located in the first sub-region 13 and the thickness of the support surface 10 located in the third sub-region 15 are both greater than the thickness of the support surface 10 located in the second sub-region 14. The second sub-region 14 is recessed relative to the first sub-region 13 and the third sub-region 15. The second sub-region 14 can restrict the movement of the first metal strip along the width direction of the support surface 10 to ensure that the subsequently placed second metal strip is aligned with the first metal strip, thereby ensuring the quality of the final composite strip.

[0098] See Figures 7 to 10 In conjunction with the foregoing description, in some embodiments, the second through groove is formed on the second sub-region 14, and the thickness of the second substrate 20 is greater than or equal to the depth of the second through groove. Preferably, the thickness of the second substrate 20 is greater than the thickness of the second sub-region 14 in the support plate 11.

[0099] In some embodiments, the thickness difference between the bearing surface 10 located in the first sub-region 13 and the second sub-region 14 is greater than or equal to the thickness of the first electrode 2.

[0100] Based on the preceding description, the two first guide members 82 are located on the first sub-region 13 and the third sub-region 15, respectively.

[0101] Correspondingly, the portion of the pressing component 81 corresponding to the first sub-region 13 is defined as the first sub-pressing component, the portion of the pressing component 81 corresponding to the second sub-region 14 is defined as the second sub-pressing component, and the portion of the pressing component 81 corresponding to the third sub-region 15 is defined as the third sub-pressing component.

[0102] In some embodiments, the thickness of both the first and third sub-pressing members is less than the thickness of the second sub-pressing member. This saves material costs compared to situations where all areas of the pressing member 81 are thicker. Furthermore, it also prevents the second sub-pressing member from failing to press the metal strip when the first driving member 80 moves the pressing member 81 to its lowest position.

[0103] In some embodiments, at least one of the second sub-pressing members has a plurality of second protrusions on the side facing the bearing surface 10, and the cross-sectional shape of the second protrusions is a closed figure composed of triangles, rectangles, arcs and line segments.

[0104] Compared to the second sub-pressing member where the side facing the bearing surface 10 is a plane, the present invention increases the contact area between the second sub-pressing member and the metal strip, thereby increasing the clamping force of the second sub-pressing member on the metal strip.

[0105] Preferably, all areas of the side of the pressing member 81 facing the bearing surface 10 have multiple second protrusions, which are continuously arranged in the same direction, and the cross-sectional shape of the second protrusions is triangular.

[0106] It is worth noting that, see Figure 1 When grinding the metal strip using the grinding device 7 is required, the grinding device 7 is positioned on the bearing surface 10. When grinding the metal strip is not required, the grinding device 7 can be removed from the bearing surface 10, or a lifting structure can be installed to raise the grinding device 7 above the metal strip or the first electrode 2, ensuring that the grinding device 7 does not interfere with subsequent processing of the metal strip. For example, the lifting structure can be located on one side of the first electrode 2, and the lifting structure can be a cylinder. Furthermore, to ensure that all areas of the metal strip except those pressed by the pressing device 8 are ground, the size of the grinding device 7 can be adjusted to be the same as the size of the metal strip. Alternatively, a position adjustment device can be installed to continuously adjust the position of the grinding device 7 relative to the metal strip.

[0107] The following describes the structure of the present invention in conjunction with the polishing device 7 using one possible implementation as an example. It should be noted that the following description is for understanding purposes only and is not intended to limit the specific implementation.

[0108] As one possible implementation, see Figures 26 to 28The pulse current assisted strip stamping forming equipment also includes: a second drive member 90, a telescopic device 91, a connecting device 92, and a drive device 93. A grinding device 7 is vertically and flexibly mounted at one end of the telescopic device 91. The telescopic device 91 is used to drive the grinding device 7 to reciprocate along the length direction of the metal strip, and to push a composite strip formed by at least two metal strips to move, so that the composite strip detaches from the bearing surface 10. The connecting device 92 is mounted on the bearing surface 10, and a portion of the telescopic device 91 is located within the connecting device 92. The second drive member 90 is drivenly connected to the connecting device 92, so that the connecting device 92 drives the telescopic device 91 to reciprocate along the length direction of the metal strip. The drive device 93 is mounted on the connecting device 92 and is drivenly connected to the telescopic device 91. The drive device 93 is used to drive the telescopic device 91 to move vertically along the height direction of the connecting device 92.

[0109] Since the connecting device 92 can drive the telescopic device 91 to reciprocate along the length of the metal strip, and the grinding device 7 is located at one end of the telescopic device 91, the grinding device 7 connected to the telescopic device 91 can reciprocate along the length of the metal strip.

[0110] See Figure 27 and Figure 28 In actual grinding, the drive device 93 is first activated, causing the telescopic device 91 to rise along the height direction of the connecting device 92 until a gap exists between the telescopic device 91 and the metal strip to be ground in the height direction, thus avoiding mutual interference between the telescopic device 91 and the metal strip. Next, the second drive member 90 drives the connecting device 92, causing the connecting device 92 to move the telescopic device 91 towards the pressing device 8, until the grinding device 7 connected to the telescopic device 91 is closest to the pressing device 8. Then, the grinding device 7 is lowered until it can grind the metal strip normally. Then, the grinding device 7 and the second drive member 90 are activated, causing the grinding device 7 to grind the metal strip in a direction away from the pressing device 8. Under the combined action of the second drive member 90, the telescopic device 91, the connecting device 92, and the drive device 93, the grinding device 7 can grind most of the area of ​​the metal strip. It should be noted that while the drive device 93 drives the telescopic device 91 to rise along the height direction of the connecting device 92, it also drives the grinding device 7 to rise. However, since the length of the brushes included in the grinding device 7 can be set according to actual conditions, compensation can be made by adjusting the length of the brushes so that the grinding device 7 can smoothly grind the metal strip.

[0111] See Figures 27 to 29Since the connecting device 92 can drive the telescopic device 91 to reciprocate along the length of the metal strip, the telescopic device 91 is used to push the composite strip formed by at least two metal strips to move, so that the composite strip is separated from the bearing surface 10. Before actual use, the telescopic device 91 is located on one side of the composite strip, and the composite strip is located between the telescopic device 91 and the pressing device 8. In actual use, after the composite strip is formed, the grinding device 7 is raised to the preset position of the telescopic device 91 to avoid contact between the grinding device 7 and the composite strip. The pressing member 81 is raised to the preset position to avoid contact between the pressing member 81 and the composite strip. Then, the driving device 93 is activated, and the driving device 93 is used to lower the telescopic device 91 along the height direction of the connecting device 92 until the telescopic device 91 can be used to push the composite strip. Then, the second driving component 90 drives the connecting device 92, causing the connecting device 92 to move the telescopic device 91 along the length of the metal strip, pushing out the composite strip close to the telescopic device 91 until the composite strip detaches from the bearing surface 10, thus completing the discharge of the composite strip. Under the combined action of the second driving component 90, the telescopic device 91, the connecting device 92, and the driving device 93, the automatic discharge of the composite strip is completed. This process reduces manual intervention, ensuring worker safety, reducing labor intensity and labor costs, while also improving work efficiency and automation.

[0112] For example, the second driving element 90 may be a drive motor. The driving device 93 is a component in the prior art and will not be described in detail here.

[0113] In one alternative approach, see Figure 28 , Figure 30 and Figure 31 The telescopic device 91 includes a telescopic structure 910, a push block 914, and two second connecting members 911. The drive device 93 is connected to the telescopic structure 910 and / or the two second connecting members 911.

[0114] In some embodiments, see Figure 1 , Figure 28 and Figure 30 Along the height direction Q of the telescopic structure 910, the surfaces of the telescopic structure 910 near the bearing surface 10 are always spaced apart from the bearing surface 10. It should be noted that this does not affect the telescopic structure 910 from achieving its corresponding function. In this way, the surfaces of the telescopic structure 910 near the bearing surface 10 can be prevented from interfering with the bearing surface 10, thus ensuring the normal operation of the telescopic structure 910.

[0115] In one alternative approach, see Figure 28 and Figure 30Along the length M of the telescopic structure 910, a first guide hole 912 is provided through the telescopic structure 910. The first connecting rod 71 of the grinding device 7 is disposed in the first guide hole 912. The third driving member 72 is drivenly connected to the first connecting rod 71, so that the first connecting rod 71 drives the grinding device 7 to move up and down along the height direction of the first guide hole 912. The telescopic structure 910 is located on one side of the connecting device 92.

[0116] For example, the third drive element 72 is a component in the prior art and will not be described in detail here.

[0117] In one alternative approach, see Figures 28 to 30 Push block 914 is disposed on the side of telescopic structure 910 facing grinding device 7, and push block 914 is close to bearing surface 10. Push block 914 is used to push the composite strip formed by at least two metal strips to move so that the composite strip is disengaged from bearing surface 10.

[0118] In some embodiments, push block 914 corresponds to the second sub-region 14 of bearing surface 10.

[0119] For example, the push block 914 is integrally formed with the telescopic structure 910.

[0120] In one alternative approach, see Figure 1 , Figure 28 and Figure 29 The vertical distance between the surface of the pusher block 914 near the bearing surface 10 and the crest of the third protrusion 21 is greater than or equal to 0 and less than the thickness of the composite strip. In this case, it can be avoided that the composite strip gets stuck between the telescopic structure 910 and the bearing surface 10 when the telescopic structure 910 is used to push the composite strip.

[0121] In some embodiments, the vertical distance between the surface of the push block 914 near the bearing surface 10 and the crest of the third protrusion 21 is greater than or equal to 0 and less than the thickness of n-1 metal strips, where n is greater than or equal to 2.

[0122] In one alternative approach, see Figures 28 to 30 Two second connectors 911 are disposed on the side of the telescopic structure 910 facing away from the grinding device 7, along the length direction M of the telescopic structure 910, and the two second connectors 911 are arranged opposite to each other and spaced apart. The second connectors 911 are located inside the connecting device 92 and are connected to the connecting device 92.

[0123] The shape of the second connector 911 is not specifically limited here. For example, it can be a cuboid, or the longitudinal section of the second connector 911 can be convex.

[0124] In one alternative approach, see Figures 28 to 31The connecting device 92 includes a connecting structure 920, a rack 921, a second connecting rod 924, and a gear 922. The connecting structure 920 has a receiving space, in which two second connecting members 911 are located. A telescopic structure 910 is located at one end of the connecting structure 920, and a driving device 93 is disposed on the outer surface of the connecting structure 920, with the telescopic structure 910 located on one side of the connecting structure 920. The rack 921 is located between the two second connecting members 911, and the length extension direction of the rack 921 is consistent with the length extension direction of the second connecting members 911. The second connecting rod 924 passes through a through hole in the rack 921, and its two ends are respectively connected to the two second connecting members 911. The gear 922 meshes with the rack 921, and the output shaft of the second driving member 90 is coaxially connected to the gear 922. It should be noted that the end of the rack 921 can be connected to the telescopic structure 910, or they can be spaced apart. For example, the second connecting rod can be fastened to the rack 921. At least a portion of the rack 921 and at least a portion of the second connector 911 are located in the receiving space.

[0125] In actual use, the second driving member 90 drives the gear 922 to rotate, and the gear 922 drives the rack 921 to move closer to the pressing device 8. The rack 921, through the second connecting rod 924, drives the second connecting member 911 to move closer to the pressing device 8. Then, the second connecting member 911 drives the telescopic structure 910 to move closer to the pressing device 8. Then, the telescopic structure 910 drives the grinding device 7 to move closer to the pressing device 8, or the telescopic structure 910 pushes the composite strip to move away from the bearing surface 10.

[0126] In summary, as described above, in some embodiments, see [link to previous document]. Figure 28 and Figure 30 The grinding device 7 includes: a seventh driving member 73, a first connecting rod 71, a grinding roller 70, two third connecting rods 74, and two fourth connecting rods 75. Along the axial direction of the grinding roller 70, the two third connecting rods 74 are opposite to each other and spaced apart, and the axial direction of the grinding roller 70 is consistent with the length direction of the telescopic structure 910. Along the height direction of the telescopic structure 910, a guide groove 913 is provided on the telescopic structure 910. Each third connecting rod 74 is guided and connected to the corresponding guide groove 913, and one end of the third connecting rod 74 is connected to the first connecting rod 71. Along the length direction of the third connecting rod 74, multiple grinding rollers 70 are spaced apart on the third connecting rod 74, and both ends of each grinding roller 70 are rotatably connected to the two third connecting rods 74.

[0127] Each seventh drive component 73 is drivenly connected to the corresponding grinding roller 70. The seventh drive component 73 is used to drive the grinding roller 70 to rotate. The specific connection method between the seventh drive component 73 and the grinding roller 70, as well as the specific structure of the seventh drive component 73, will not be described in detail here, as long as it meets the actual needs. For example, the seventh drive component 73 can be a drive motor.

[0128] Along the height direction of the connecting structure 920, two second guide holes 923 are formed on the connecting structure 920. Along the length direction of the telescopic structure 910, the two second guide holes 923 are located on both sides of the telescopic structure 910. The first ends of the two fourth connecting rods 75 are fixedly connected to the first connecting rod 71, and along the length direction of the first connecting rod 71, the two fourth connecting rods 75 are located on both sides of the telescopic structure 910. The second ends of the two fourth connecting rods 75 are located within the connecting structure 920 through the corresponding second guide holes 923. A third driving member 72 is disposed on the connecting structure 920, with a portion of the third driving member 72 located within the receiving space of the connecting structure 920. The third driving member 72 is drivably connected to the second ends of the two fourth connecting rods 75 to drive the first connecting rod 71 to move up and down along the height direction of the first guide hole 912. The third driving member 72 is a component in the prior art and will not be described in detail here.

[0129] In some embodiments, the dimensions of the first guide hole 912 in terms of height are equal to those of the second guide hole 923 in terms of height, and the dimensions of the grinding roller 70 are matched with the dimensions of the metal strip.

[0130] It should be noted that the size and shape of the accommodating space of the connecting structure 920 are not specified here, as long as they can meet the actual needs.

[0131] In actual use, the third drive unit 72 is activated, which drives the fourth connecting rod 75 to move upward along the height direction of the second guide hole 923. The two fourth connecting rods 75 drive the first connecting rod 71 to move upward along the height direction of the first guide hole 912. The first connecting rod 71 drives the third connecting rod 74, the grinding roller 70 and the seventh drive unit 73 to move upward.

[0132] In summary, see Figures 1 to 33The pulse current-assisted strip stamping forming equipment provided by this invention integrates a pulse current-assisted stamping device 4, a pulse power supply 5, a control device 6, a grinding device 7, a telescopic device 91, a connecting device 92, and a driving device 93. By conveying and pre-treating the metal strip layer by layer (e.g., heating and grinding the metal strip), combined with the synergistic effect of local preheating, pulse current, and stamping, instantaneous metallurgical bonding of the interlayer interfaces is achieved. This solves the problems of long preparation cycles and high energy consumption in composite strip manufacturing, improving production efficiency. Furthermore, by utilizing the local instantaneous thermal effect and electroplasticity of pulse current, combined with precise mechanical stamping, rapid metallurgical bonding of the interlayer interfaces is achieved without overall heating, thereby achieving the goal of manufacturing high-performance metal layered composite strips with high efficiency, energy saving, and low residual stress.

[0133] Combination Figures 1 to 33 The following describes the use of a pulse current-assisted strip stamping forming equipment using one possible implementation method as an example. It should be noted that the following description is for understanding purposes only and is not intended to limit the specific application.

[0134] Step 101: Based on the width of the second sub-region 14 included in the bearing surface 10, select metal strips of initial specifications and place at least two selected metal strips at the raw material stack. Next, a worker or other mechanical structure places the first metal strip from the raw material stack to the clamping structure 43 for clamping. Then, the clamping structure 43 transports the first metal strip to the second sub-region 14 included in the bearing surface 10. Note that the first electrode 2 has already been pre-positioned in the second sub-region 14.

[0135] Step 102: First, activate the first drive unit 80 to press the lowering unit 81 against one end of the first metal strip. Next, activate the drive device 93 to raise the telescopic device 91 along the height direction of the connecting device 92 until a gap exists between the telescopic device 91 and the metal strip to be ground in the height direction. Then, use the second drive unit 90 to drive the connecting device 92, causing the connecting device 92 to move the telescopic device 91 closer to the lowering device 8, until the grinding device 7 connected to the telescopic device 91 is closest to the lowering device 8. Then, activate the third drive unit 72 to lower the grinding device 7 until it can grind the metal strip normally. Then, activate the second drive unit 90 and the seventh drive unit 73 of the grinding device 7 to grind the metal strip in a direction away from the lowering device 8, thereby achieving grinding of most areas of the first metal strip by the grinding roller 70. At this time, the surface of the first metal strip is clean and the roughness is suitable to promote interlayer bonding. After the grinding process of the first metal strip is completed, the pressing device 8, the grinding device 7, the connecting device 92 and the telescopic device 91 stop working and reset.

[0136] Step 103: Select a second metal strip according to the requirements of the final composite strip. Clamp the second metal strip using the clamping structure 43. Simultaneously, activate the heating structure 44 to heat the second metal strip until its temperature reaches the preset temperature. Next, activate the seventh drive unit 73 to drive the grinding roller 70 included in the grinding device 7 to rotate, grinding the side of the second metal strip facing the grinding roller 70. Note that at this time, the second metal strip is located on the clamping structure 43, and the side of the second metal strip facing the grinding roller 70 is also the side facing the first metal strip. After the grinding of the second metal strip is completed, the grinding device 7 stops working and resets. Then, using the second linear motion structure 31 and the clamping structure 43, place the processed second metal strip on the designated position of the first metal strip.

[0137] As one possible implementation, the preset temperature ranges from 300℃ to 700℃. This helps to further soften the metal strip, preparing it for subsequent pulse current application, thus facilitating the bonding of the two metal strips. For example, the preset temperature can be 300℃, 350℃, 400℃, 450℃, 500℃, 550℃, 600℃, 650℃, or 700℃, etc.

[0138] Step 104: The pulse current assisted stamping device 4 is brought to a suitable position in the X-axis direction by the first linear motion structure 30, the pulse current assisted stamping device 4 is brought to a suitable position in the Z-axis direction by the second linear motion structure 31, and the pulse current assisted stamping device 4 is brought to a suitable position in the Y-axis direction by the third linear motion structure 32.

[0139] Step 105: Start the pulse power supply 5. At this time, the pulse power supply 5, the first wire 403, the first conductive element 402, the stamping head 401, the second electrode 42, the metal strip, and the first electrode 2 form a conductive circuit. The first electrode 2 applies a pulse current to the second sub-region 14, and the second electrode 42 applies a pulse current to the second metal strip. At the same time, the ball screw 310 is adjusted so that the pulse current-assisted stamping device 4 applies stamping force to the upper surface of the second metal strip, thereby achieving metallurgical bonding of the processed areas in the two stacked and contacting metal strips. Based on the total thickness of the two placed metal strips, the magnitude of the pulse current provided by the pulse power supply 5 is controlled by the control device 6, and the magnitude of the applied stamping force is controlled by controlling the ball screw 310. The fifth drive element 311 is driven and connected to the ball screw 310. By controlling the magnitude of the output torque of the fifth drive element 311, the magnitude of the axial thrust output by the ball screw 310 can be adjusted, thereby achieving control of the stamping force. For example, the greater the torque output by the fifth drive unit 311, the greater the stamping force applied by the stamping head 401 to the upper surface of the second metal strip.

[0140] As one possible implementation, the effective value of the pulse current output by the pulse power supply 5 is adjusted by the control device 6 to be between 20A and 75A, and the pulse frequency is set to between 50Hz and 1000Hz. For example, the effective value of the pulse current can be 20A, 25A, 30A, 35A, 40A, 45A, 50A, 55A, 60A, 65A, 70A, or 75A, etc. The pulse frequency can be 50Hz, 100Hz, 200Hz, 300Hz, 400Hz, 500Hz, 600Hz, 700Hz, 800Hz, 900Hz, or 1000Hz, etc.

[0141] Step 106: If the number of metal strips is greater than two, repeat steps 101 to 105 above until all metal strips have been manufactured to form a composite strip.

[0142] Step 107: After completing the above manufacturing work, raise the grinding device 7 to the appropriate range of the first guide hole 912 (i.e., raise the grinding device 7 to the appropriate position of the telescopic device 91), making enough space for the telescopic device 91. Next, use the second driving member 90 to drive the connecting device 92, so that the connecting device 92 drives the telescopic device 91 to move along the length direction of the connecting device 92, so as to push out the composite strip close to the telescopic device 91 until the composite strip is separated from the bearing surface 10, thus completing the discharge of the composite strip.

[0143] As one possible implementation, when the grinding device 7 grinds the surfaces of the first and second metal strips to be bonded, the target surface roughness Ra of the surfaces to be bonded can range from 6.3 μm to 100 μm. This increases the surface area of ​​the surfaces to be bonded, promoting mechanical interlocking and metallurgical bonding. For example, the target surface roughness Ra can be 6.3 μm, 10 μm, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm, etc.

[0144] Although the invention has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made therein without departing from the spirit and scope of the invention. Accordingly, this specification and drawings are merely exemplary descriptions of the invention as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if such modifications and modifications of the invention fall within the scope of the claims and their equivalents, the invention is also intended to include such modifications and modifications.

Claims

1. A pulse current-assisted strip stamping forming device, characterized in that, include: The bearing device has a bearing surface; The first electrode is disposed on the bearing surface; At least two metal strips to be bonded are stacked on the first electrode, which is used to apply a pulsed current to the metal strips; The mobile device is mounted on the bearing surface; A pulse current-assisted stamping device is disposed on the moving device; the pulse current-assisted stamping device is located above the first electrode; the moving device is used to drive the pulse current-assisted stamping device to contact or move away from the metal strip, and the pulse current-assisted stamping device is used to apply a pulse current to the contacting metal strip and stamp the metal strip; A pulse power supply is electrically connected to the pulse current-assisted stamping device and the first electrode.

2. The pulse current-assisted strip stamping forming equipment according to claim 1, characterized in that, The pulse current assisted stamping device includes: A stamping structure is provided on the moving device; A fixing structure having a first through groove penetrating the fixing structure along its thickness direction; The second electrode is disposed on the fixed structure and located in the first through groove; the free end of the stamping structure is interference-fitted with the first groove of the second electrode; the pulse power supply is electrically connected to the second electrode through the stamping structure, and applies pulse current and stamping force to the metal strip abutting through the second electrode; A clamping structure is provided on the fixed structure for clamping the metal strip.

3. The pulse current-assisted strip stamping forming equipment according to claim 2, characterized in that, The stamping structure includes: A first connector is disposed on the mobile device; A punch head, the first end of which is fixedly connected to the first connector; the second end of which is interference-fitted with the first groove of the second electrode; A first conductive element is located between the first connector and the stamping head; A first conductor is disposed within the first connector; the first conductive element is electrically connected to the pulse power supply through the first conductor; the second electrode is electrically connected to the first conductive element through the stamping head.

4. The pulse current-assisted strip stamping forming equipment according to claim 3, characterized in that, An insulating element is wrapped around the side of the second end of the stamping head; both the second end of the stamping head and the insulating element are located in the first groove, and the end face of the stamping head abuts against the second electrode. Both the fixing structure and the first connector are made of insulating materials.

5. The pulse current-assisted strip stamping forming equipment according to claim 2, characterized in that, The second electrode includes a first substrate and a plurality of first protrusions; the plurality of first protrusions are disposed on a first surface of the first substrate, and the second surface of the first substrate faces the stamping structure; the plurality of first protrusions are continuously arranged in the same direction to form a strip-shaped corrugated structure; The pulse current assisted stamping device further includes a heating structure, which is disposed on the fixing structure and / or the clamping structure.

6. The pulse current-assisted strip stamping forming equipment according to claim 1, characterized in that, The pulse current assisted strip stamping forming equipment further includes: a grinding device and a pressing device disposed on the bearing surface; The grinding device is used to grind the metal strip; Along the length of the metal strip, the pressing device and the polishing device are arranged opposite to each other; the pressing device is used to press a portion of the metal strip located on the first electrode.

7. The pulse current-assisted strip stamping forming equipment according to claim 6, characterized in that, The pressing device includes: A first driving component is fixedly connected to the bearing surface; the first driving component has a telescopic driving end. A pressing member is connected to the telescopic drive end, and the first drive member is used to drive the pressing member to press against or move away from the metal strip. A first guide member is disposed on the bearing surface; two first guide members are disposed opposite to each other, and the metal strip is located between the two first guide members; both ends of the pressing member are respectively guided and connected to the two first guide members; the first guide member has a receiving space, and the first driving member is located in the receiving space.

8. The pulse current-assisted strip stamping forming equipment according to claim 6, characterized in that, The pulse current-assisted strip stamping forming equipment also includes: Second drive unit; A telescopic device is provided, wherein the grinding device is movably and vertically disposed at one end of the telescopic device; the telescopic device is used to drive the grinding device to reciprocate along the length direction of the metal strip, and to push a composite strip formed by at least two of the metal strips to move so that the composite strip is detached from the bearing surface; A connecting device is disposed on the bearing surface; a portion of the telescopic device is disposed within the connecting device; a second driving member is drivenly connected to the connecting device, so that the connecting device drives the telescopic device to reciprocate along the length direction of the metal strip; A driving device is disposed on the connecting device; the driving device is drivingly connected to the telescopic device, and the driving device is used to drive the telescopic device to move up and down along the height direction of the connecting device.

9. The pulse current-assisted strip stamping forming equipment according to claim 8, characterized in that, The telescopic device includes: A telescopic structure is provided, with a first guide hole penetrating the telescopic structure along its length; a first connecting rod of the grinding device is disposed in the first guide hole; a third driving member is drivenly connected to the first connecting rod, so that the first connecting rod drives the grinding device to move up and down along the height direction of the first guide hole; A push block is disposed in the telescopic structure on the side facing the grinding device, and the push block is close to the bearing surface; Two second connectors are disposed on the side of the telescopic structure opposite to the grinding device; the two second connectors are arranged opposite each other and spaced apart along the length of the telescopic structure; the second connectors are located inside the connecting device and connected to the connecting device; The drive device is connected to the telescopic structure and / or the two second connecting members.

10. The pulse current-assisted strip stamping forming equipment according to claim 9, characterized in that, The connecting device includes: A connecting structure having a receiving space; two second connecting members are both located in the receiving space; the telescopic structure is located at one end of the connecting structure; the driving device is disposed on the outer surface of the connecting structure; A rack is located between the two second connectors; the length extension direction of the rack is consistent with the length extension direction of the second connectors. The second connecting rod passes through the through hole in the rack, and its two ends are respectively connected to the two second connecting pieces; The gear meshes with the rack; the output shaft of the second drive member is coaxially connected to the gear.

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