Coil and shaping device

Abstract

The utility model discloses a coil and a shaping device, and the coil comprises two bending parts which are symmetrically arranged, the cross section of each bending part is in an arc shape, and each bending part is used for inputting an electric signal; the main body part is arranged between the two bending parts, the cross section of the main body part is rectangular, the main body part is used for outputting electric signals, and the sectional area of each bending part is smaller than that of the main body part; the two connecting parts are in one-to-one correspondence with the two bent parts, each connecting part is connected between the main body part and the corresponding bent part, so that the bent parts are communicated with the main body part, and the two bent parts, the main body part and the two connecting parts are connected to form an integrated E-shaped structure. According to the coil, when an electric signal is input into the bent part, high current density is generated at the bent part and can effectively act on the bent part of the workpiece, the formability of the bent part of the workpiece is improved, the stress of the bent part of the workpiece is reduced, the situation that the bent part of the workpiece is cracked due to tension is avoided, and the machining yield is improved.

Description

Technical Field

[0001] The present application relates to the technical field of metal shaping, and in particular to a coil and a shaping device using the coil to remove stress. Background Art

[0002] In actual production and processing, it is usually necessary to process the workpiece, such as punching a flat workpiece into a U-shaped piece. However, when the workpiece is punched into a U-shaped piece, uneven stress will be generated at the bend of the workpiece, resulting in cracks at the bend of the workpiece, causing poor processing. Utility Model Content

[0003] In view of the above, it is necessary to propose a coil and a shaping device using the coil to remove stress, reduce the stress at the bending part of the workpiece and make the stress evenly distributed, avoid cracking at the bending part of the workpiece, and improve the processing yield.

[0004] An embodiment of the present application provides a coil, the coil comprising:

[0005] Two symmetrically arranged bending parts, each of which has an arc-shaped cross section, wherein each of the bending parts is used to input an electrical signal;

[0006] A main body portion disposed between the two bent portions, wherein the cross-section of the main body portion is rectangular, wherein the main body portion is used to output electrical signals, and the cross-sectional area of ​​each bent portion is smaller than the cross-sectional area of ​​the main body portion;

[0007] Two connecting parts corresponding to the two bending parts one by one, each connecting part is connected between the main body and the corresponding bending part to make the bending part conductive with the main body, wherein the two bending parts, the main body and the two connecting parts are connected into an integrated E-shaped structure.

[0008] In some embodiments, the coil further comprises:

[0009] Two supporting ends corresponding to the two bending portions one by one, each supporting end being connected to an end of the corresponding bending portion away from the corresponding connecting portion, and the supporting end being used to connect an electrical input body for inputting electrical signals;

[0010] A main body end connected to an end of the main body away from the connecting portion, the main body end being used to connect to an electrical output body that outputs electrical signals;

[0011] The cross-sectional area of ​​the main body end is equal to the cross-sectional area of ​​the main body portion, and the lower surface of the main body end and the lower surfaces of the two support ends are located in the same plane.

[0012] In some embodiments, each of the support ends is provided with an input jack for inserting the electrical input body; and the main body end is provided with an output jack for inserting the electrical output body.

[0013] In some embodiments, the ratio of the cross-sectional area of ​​each of the bent portions to the cross-sectional area of ​​the main body portion is in a range of 1:6 to 1:5.

[0014] In some embodiments, the thickness of each of the bent portions ranges from 1 mm to 3 mm, the thickness of the main body ranges from 10 mm to 14 mm, and the length of the main body ranges from 40 mm to 41 mm.

[0015] The embodiment of the present application further provides a shaping device for punching a workpiece into a bent structure, the shaping device comprising:

[0016] The die is provided with a shaping groove;

[0017] A male die is arranged opposite to the female die and is used to move toward the female die to punch the workpiece so that the workpiece is formed into the bent structure in the shaping groove;

[0018] The coil as described in the above technical solution is embedded in the die, and is used to introduce and extract electrical signals to remove stress at the two bending parts of the workpiece.

[0019] In some embodiments, the number of the coils is two, the two coils are symmetrically arranged in the concave mold, and the connecting parts in the two coils are arranged opposite to each other, and the gap between the two coils ranges from 1 mm to 3 mm.

[0020] In some embodiments, each of the coils further comprises:

[0021] Two supporting ends corresponding to the two bending portions one by one, each supporting end being connected to an end of the corresponding bending portion away from the corresponding connecting portion, and the supporting end being used to connect an electrical input body for inputting electrical signals;

[0022] A main body end connected to an end of the main body away from the connecting portion, the main body end being used to connect to an electrical output body that outputs electrical signals;

[0023] The cross-sectional area of ​​the main body end is equal to the cross-sectional area of ​​the main body portion, and the lower surface of the main body end and the lower surfaces of the two support ends are located in the same plane.

[0024] In some embodiments, a gap between a side of each of the bent portions close to the main body and a side of the main body close to the corresponding bent portion ranges from 8 mm to 12 mm.

[0025] In some embodiments, the gap between the upper surface of the coil and the bottom of the shaping groove ranges from 1 mm to 3 mm.

[0026] The coil and shaping device provided in the embodiment of the present application are designed to be an integrated E-shaped structure and limit the cross-sectional area of ​​the bending portion to be smaller than the cross-sectional area of ​​the main body. When an electrical signal is input to the bending portion, a high current density is generated at the bending portion, and the electromagnetic force generated by the bending portion can effectively act on the bending portion of the workpiece, thereby increasing the formability of the bending portion of the workpiece. Since the formability of the bending portion of the workpiece is increased, the stress at the bending portion of the workpiece is effectively reduced. Since the cross-section of the bending portion is arc-shaped to facilitate matching with the bending portion of the workpiece, the electromagnetic force generated at the bending portion is uniform, that is, uniform pressure is generated, so that the stress at the bending portion of the workpiece is evenly distributed, thereby avoiding cracking at the bending portion of the workpiece and improving the processing yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the shaping device provided in an embodiment of the present application.

[0028] Figure 2 yes Figure 1 Front view of the middle shaping device.

[0029] Figure 3 yes Figure 1 Schematic diagram of the three-dimensional structure of the double coil.

[0030] Figure 4 yes Figure 3 Top view of the double coil.

[0031] Figure 5 yes Figure 3 Cross-sectional view of a single coil along V-V.

[0032] Main component symbols

[0033] Shaping device 100

[0034] Coil 10

[0035] Bending portion 11

[0036] Main body 12

[0037] Connection part 13

[0038] Support end 14

[0039] Jack 141

[0040] Main body end 15

[0041] Jack 151

[0042] Die 20

[0043] Shaping slot 21

[0044] Card slot 22

[0045] Punch 30

[0046] Workpiece 200

[0047] First insert 201

[0048] Second insert 202 DETAILED DESCRIPTION

[0049] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0050] In the description of the present application, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, it should be noted that the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0051] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0053] See also Figure 1 and Figure 2The embodiment of the present application provides a shaping device 100, which is used to stamp and shape a workpiece 200 into a bent structure. The workpiece 200 may be a composite material, for example, the workpiece 200 is a titanium-aluminum alloy material, and the workpiece 200 includes a first insert 201 located on the outside and a second insert 202 located on the inside. The first insert 201 may be a titanium material, and the second insert 202 may be an aluminum material. The first insert 201 and the second insert 202 are connected together. It should be noted that Figure 1 and Figure 2 The die 20 shown in FIG. 1 is a perspective view.

[0054] The shaping device 100 includes a coil 10, a die 20 and a punch 30. The coil 10 is embedded in the die 20, and the die 20 cooperates with the punch 30 to stamp and shape the workpiece 200 into a bent structure. The coil 10 is used to remove stress from the bent portion of the workpiece 200 after stamping.

[0055] See also Figure 3 , Figure 4 and Figure 5 The coil 10 includes a bending portion 11 , a main body portion 12 and a connecting portion 13 .

[0056] There are two bending parts 11, and the two bending parts 11 are symmetrically arranged. The cross section of each bending part 11 is arc-shaped, for example, circular arc-shaped. The two bending parts 11 are adapted to the two bends of the workpiece 200. When the coil 10 is applied to the shaping device 100, each bending part 11 is used to input an electrical signal, which can be a pulse current. The main body 12 is arranged between the two bending parts 11. The cross section of the main body 12 is rectangular. When the coil 10 is applied to the shaping device 100, the main body 12 is used to output an electrical signal. The cross-sectional area of ​​each bending part 11 is smaller than the cross-sectional area of ​​the main body 12. There are two connecting parts 13, and the two connecting parts 13 are arranged in a one-to-one correspondence with the two bending parts 11. Each connecting part 13 is connected between the main body 12 and the corresponding bending part 11. Each connecting part 13 is specifically connected between the end of the main body 12 and the end of the corresponding bending part 11, so that the bending part 11 is conductively connected with the main body 12, wherein the two bending parts 11, the main body 12 and the two connecting parts 13 are connected into an integrated E-shaped structure, wherein one end of the connecting part 13 is set to be a concave arc.

[0057] In this way, the coil 10 is designed into an integrated E-type structure and the cross-sectional area of ​​the bending portion 11 is limited to be smaller than the cross-sectional area of ​​the main body 12. When an electrical signal is input into the bending portion 11, the cross-sectional area difference between the bending portion 11 and the main body 12 is utilized to make the electrical signal pass through the bending portion 11 and the main body 12 of different cross-sectional areas, and generate different electromagnetic forces at the bending portion 11, the connecting portion 13 and the main body 12 respectively. Since the cross-sectional area at the bending portion 11 is smaller, the electrical signal generates a larger current density at the bending portion 11, thereby generating a larger electromagnetic force, so that the electromagnetic force generated by the bending portion 11 can effectively act on the bending portion of the workpiece 200, thereby increasing the formability of the bending portion of the workpiece 200 and effectively reducing the stress at the bending portion of the workpiece 200. Since the curved portion 11 is arc-shaped and matches the bend of the workpiece 200, a uniform electromagnetic force is generated at the curved portion 11, so that the bend of the workpiece 200 can be uniformly acted upon by the electromagnetic force, so that the residual stress at the bend of the workpiece 200 is reduced and evenly distributed, thereby avoiding the occurrence of cracking at the bend of the workpiece 200 and improving the processing yield. In addition, when the workpiece 200 includes a first insert 201 and a second insert 202 combined, the electromagnetic force generated by the coil 10 can also avoid the separation of the bonding surfaces of the first insert 201 and the second insert 202, further improving the yield of stamping of composite materials.

[0058] In the embodiment of the present application, the number of coils 10 in the shaping device 100 can be two, the two coils 10 are symmetrically arranged and the connecting parts 13 in the two coils 10 are relatively arranged, and the gap range L1 between the two coils 10 is approximately 1mm to 3mm. In this way, by setting the shaping device 100 as a double coil 10 symmetrical structure, the shaping device 10 can generate the required uniform pressure (electromagnetic force) with a smaller current. In addition, by setting the shaping device 100 as a double coil 10 symmetrical structure, the uneven uniform pressure generated by the shaping device 100 can also be avoided, reducing energy loss. Among them, the gap range L1 between the two coils 10 can be 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, etc., which can be set according to actual conditions.

[0059] In the embodiment of the present application, each coil 10 further includes a support end 14 and a main body end 15. There are two support ends 14 and they correspond to the two bending portions 11 one by one. Each support end 14 is connected to the end of the corresponding bending portion 11 away from the corresponding connecting portion 13. The support end 14 is used to connect an electric input body for inputting electric signals; the main body end 15 is connected to the end of the main body 12 away from the connecting portion 13. The main body end 15 is used to connect an electric output body for outputting electric signals, wherein the electric input body and the electric output body can be wire connectors. In the embodiment of the present application, the cross-sectional area of ​​the main body end 15 is equal to the cross-sectional area of ​​the main body 12, and the lower surface of the main body end 15 and the lower surfaces of the two support ends 14 are located in the same plane. Thus, by setting the above-mentioned support end 14 and main body end 15, the coil 10 can input and output electrical signals; by setting the lower surface of the main body end 15 and the lower surfaces of the two support ends 14 to be located in the same plane, the upper surfaces of the curved portion 11, the main body portion 12 and the connecting portion 13 are smoothly connected, and the coil 10 can also be supported by the main body end 15, which is convenient for assembling the coil 10. It can be understood that when the coil 10 is embedded in the concave mold 20, the support end 14 and the main body end 15 are both located outside the concave mold 20, so as to facilitate connection with the electrical input body and the electrical output body.

[0060] In the embodiment of the present application, each support end 14 is provided with an input jack 141, and the input jack 141 is used to plug in an electrical input body. The main body end 15 is provided with an output jack 151, and the output jack 151 is used to plug in an electrical output body, wherein both the electrical input body and the electrical output body can be wire connectors. In this way, by providing the above-mentioned input jack 141 and output jack 151, it is convenient to connect the coil 10 with the wire connector, ensuring that the wire connector can be stably electrically connected to the coil 10, and avoiding the situation of virtual connection and short circuit.

[0061] In the embodiment of the present application, the ratio of the cross-sectional area of ​​each bend 11 to the cross-sectional area of ​​the main body 12 is approximately in the range of 1:6 to 1:5, for example, 1:6, 1:5.9, 1:5.8, 1:5.7, 1:5.6, 1:5.5, 1:5.4, 1:5.3, 1:5.2, 1:5.1, 1:5, etc. In this way, by limiting the above-mentioned ratio range, a cross-sectional area differentiation design is adopted between the bend 11 and the main body 12, so that the bend 11 with a small cross-sectional area generates a high current density, which is conducive to electromagnetic shaping of the bend of the workpiece 200. However, when the above-mentioned ratio range is less than 1:6, the cross-sectional area difference between the bend 11 and the main body 12 is large, and the high current density generated at the bend 11 is large, which easily causes electromagnetic phenomena in the workpiece 200, making the workpiece 200 magnetic, causing electromagnetic interference. When the above ratio range is greater than 1:5, the cross-sectional area difference between the bent portion 11 and the main body 12 is small, and it is difficult to generate a high current density at the bent portion 11 and remove stress from the workpiece 200 .

[0062] In addition, by limiting the above ratio range, the magnitude and area range of the electromagnetic force generated by the coil 10 can be adjusted by adjusting the above ratio, and the application range of the coil 10 is wide.

[0063] In the embodiment of the present application, the thickness range L2 of each curved portion 11 is approximately 1 mm to 3 mm, for example, 1 mm, 1.2 mm, 1.4 mm, 1.6 mm, 1.8 mm, 2 mm, 2.2 mm, 2.4 mm, 2.6 mm, 2.8 mm, 3 mm, etc. The thickness range L3 of the main body 12 is approximately 10 mm to 14 mm, for example, 10 mm, 10.5 mm, 11 mm, 11.5 mm, 12 mm, 12.5 mm, 13 mm, 13.5 mm, 14 mm, etc. The length range L4 of the main body 12 is approximately 40 mm to 41 mm, for example, 40 mm, 40.1 mm, 40.2 mm, 40.3 mm, 40.4 mm, 40.5 mm, 40.6 mm, 40.7 mm, 40.8 mm, 40.9 mm, 41 mm, etc. The length of the main body 12 is equal to the length of the curved portion 11. Thus, by limiting the above range, on the one hand, the cross-sectional area of ​​the bent portion 11 is made smaller than the cross-sectional area of ​​the main body 12, and on the other hand, the coil 10 is miniaturized, thereby performing electromagnetic shaping on the miniaturized parts.

[0064] In the embodiment of the present application, the upper surface of the connection portion 13 is connected between the curved portion 11 and the main body 12 and is substantially flat, and the lower surface of the connection portion 13 is an inwardly concave curved surface, so as to smoothly transition between the lower surface of the curved portion 11 and the lower surface of the main body 12. In this way, by defining the shape of the above-mentioned connection portion 13, the connection portion 13 can transitionally connect the curved portion 11 and the main body 12, so that the electrical signal can be smoothly transmitted between the curved portion 11 and the main body 12, and sparks or other electrical accidents caused by the large difference in current density between the curved portion 11 and the main body 12 are avoided, so that the coil 10 can be used safely.

[0065] In the embodiment of the present application, the gap range L5 between the side of each bend 11 close to the main body 12 and the side of the main body 12 close to the corresponding bend 11 is approximately 8mm to 12mm, for example, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, etc. In this way, by limiting the above-mentioned gap range, a reasonable gap range is maintained between the bend 11 and the main body 12 to avoid arcing between the bend 11 and the main body 12 and causing the coil 10 to short-circuit. However, when the above-mentioned gap is less than 8mm, the distance between the bend 11 and the main body 12 is small, and arcing is easily generated between the bend 11 and the main body 12, causing the coil 10 to short-circuit. When the above-mentioned gap is greater than 12mm, the distance between the bend 11 and the main body 12 is large, which is not conducive to the miniaturization design of the coil 10.

[0066] In the embodiment of the present application, the surface material of the coil 10 is copper, and epoxy resin is filled inside the coil 10. Thus, by setting the surface material of the coil 10 to be copper, the manufacturing cost of the coil 10 can be reduced, thereby saving costs.

[0067] The coil 10 provided in the embodiment of the present application is designed to be an integrated E-type structure and the cross-sectional area of ​​the bending portion 11 is limited to be smaller than the cross-sectional area of ​​the main body 12. When an electrical signal is input to the bending portion 11, a high current density is generated at the bending portion 11, and the electromagnetic force generated by the bending portion 11 can effectively act on the bending portion of the workpiece 200, thereby increasing the formability of the bending portion of the workpiece 200. Since the formability of the bending portion of the workpiece 200 is increased, the stress at the bending portion of the workpiece 200 is effectively reduced. Since the bending portion 11 is arc-shaped and matches the bending portion of the workpiece 200, the electromagnetic force generated at the bending portion 11 is uniform, that is, uniform pressure is generated, so that the residual stress at the bending portion of the workpiece 200 is evenly distributed, thereby avoiding cracking at the bending portion of the workpiece 200 and improving the processing yield.

[0068] In this application example, please participate again Figure 1 and Figure 2The die 20 is provided with a shaping groove 21 adapted to the bending structure, and the die 20 is also provided with a clamping groove 22, which is located below the shaping groove 21. The punch 30 is arranged opposite to the die 20, and the punch 30 is arranged above the die 20. The punch 30 is used to move toward the die 20 to punch the workpiece 200 placed on the die 20, so that the workpiece 200 is punched and formed into a bending structure in the shaping groove 21. The coil 10 is applied to the shaping device 100, and the coil 10 is embedded in the slot 22 of the die 20, and the slot 22 is adapted to the coil 10. In the embodiment of the present application, two symmetrically arranged coils 10 are provided in the shaping device 100, wherein the bending portion 11, the main body 12 and the connecting portion 13 of the coil 10 are all adapted to be arranged in the slot 22 of the die 20, and the supporting end 14 and the main body end 15 of the coil 10 are both located outside the die 20 and abut against the die 20, and the supporting end 14 and the main body end 15 of the coil 10 are respectively used to introduce and lead out electrical signals to generate electromagnetic force at the bending portion 11, the main body 12 and the connecting portion 13 of the coil 10, thereby performing electromagnetic shaping on the two bending portions of the workpiece 200.

[0069] When the shaping device 100 is in use, the workpiece 200 is placed on the die 20 and located above the shaping groove 21, and the punch 30 is moved toward the die 20 to punch the workpiece 200, so that the workpiece 200 is formed into a bent structure in the shaping groove 21, and the bent structure at this time approaches the ideal outer contour size. When the punch 30 completes the punching, an electrical signal is input to the coil 10, so that the coil 10 is instantly discharged, and the coil 10 generates a uniform pressure, pushing the workpiece 200 to deform so that the workpiece 200 approaches the ideal outer contour size, and reducing the residual stress of the first insert 201, and making the remaining residual stress uniformly distributed, wherein the discharge time range of the coil 10 is approximately 100 microseconds to 300 microseconds. When the coil 10 is energized, the punch 30 is moved away from the die 20 to open the mold, so as to remove the bent structure in the shaping groove 21.

[0070] In the embodiment of the present application, the gap range L6 between the upper surface of the coil 10 and the bottom of the shaping groove 21 is approximately 1mm to 3mm. For example, the gap range L6 between the upper surface of the coil 10 and the bottom of the shaping groove 21 can be 1mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, 3mm, etc. In this way, by limiting the above-mentioned gap range, the electromagnetic force generated by the coil 10 can effectively act on the bending part of the bending structure, thereby increasing the formability of the bending structure. However, when the gap between the upper surface of the coil 10 and the bottom of the shaping groove 21 is less than 1mm, the distance between the upper surface of the coil 10 and the bottom of the shaping groove 21 is small, and the electromagnetic force generated by the coil 10 is large, which easily causes the workpiece 200 to generate electromagnetic phenomena, making the workpiece 200 magnetic. When the gap between the upper surface of the coil 10 and the bottom of the shaping groove 21 is greater than 3 mm, the distance between the upper surface of the coil 10 and the bottom of the shaping groove 21 is large, and the electromagnetic force generated by the coil 10 cannot effectively act on the workpiece 200, which is not conducive to achieving electromagnetic shaping of the workpiece 200.

[0071] The shaping device 100 provided in the embodiment of the present application can generate the required uniform pressure with a smaller current by designing the shaping device 100 into a symmetrical structure of a double coil 10 and limiting the cross-sectional area of ​​the bending portion 11 to be smaller than the cross-sectional area of ​​the main body 12. When an electrical signal (pulse current) is input into the bending portion 11, a high current density is generated at the bending portion 11, and the electromagnetic force generated by the bending portion 11 can effectively act on the bending portion of the workpiece 200, thereby increasing the formability of the bending portion of the workpiece 200. Since the formability of the bending portion of the workpiece 200 is increased, the stress at the bending portion of the workpiece 200 is effectively reduced. Since the bending portion 11 is arc-shaped and matches the bending portion of the workpiece 200, the electromagnetic force generated at the bending portion 11 is uniform, that is, uniform pressure is generated, so that the stress at the bending portion of the workpiece 200 is evenly distributed, thereby avoiding cracking, rebound and separation of the bonding surface at the bending portion of the workpiece 200, thereby improving the processing yield. In addition, the coil 10 has a simple and reliable structure, is easy to manufacture, has good heat dissipation, is strong in rigidity, can withstand large currents and other electrical signals, increases the application range of the shaping device 100, and improves the service life of the shaping device 100.

[0072] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present application.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A coil, characterized in that: The coil comprises: Two symmetrically arranged bending parts, each of which has an arc-shaped cross section, wherein each of the bending parts is used to input an electrical signal; A main body portion disposed between the two bent portions, wherein the cross-section of the main body portion is rectangular, wherein the main body portion is used to output electrical signals, and the cross-sectional area of ​​each bent portion is smaller than the cross-sectional area of ​​the main body portion; Two connecting parts corresponding to the two bending parts one by one, each connecting part is connected between the main body and the corresponding bending part to make the bending part conductive with the main body, wherein the two bending parts, the main body and the two connecting parts are connected into an integrated E-shaped structure.

2. The coil according to claim 1, characterized in that The coil also includes: Two supporting ends corresponding to the two bending portions one by one, each supporting end being connected to an end of the corresponding bending portion away from the corresponding connecting portion, and the supporting end being used to connect an electrical input body for inputting electrical signals; A main body end connected to an end of the main body away from the connecting portion, the main body end being used to connect to an electrical output body that outputs electrical signals; The cross-sectional area of ​​the main body end is equal to the cross-sectional area of ​​the main body portion, and the lower surface of the main body end and the lower surfaces of the two support ends are located in the same plane.

3. The coil according to claim 2, characterized in that Each of the supporting ends is provided with an input jack for inserting the electrical input body; the main body end is provided with an output jack for inserting the electrical output body.

4. The coil according to claim 1, characterized in that The ratio of the cross-sectional area of ​​each of the bent portions to the cross-sectional area of ​​the main body portion is in the range of 1:6 to 1:

5.

5. The coil according to claim 1, characterized in that The thickness of each of the bent portions ranges from 1 mm to 3 mm, the thickness of the main body ranges from 10 mm to 14 mm, and the length of the main body ranges from 40 mm to 41 mm.

6. A shaping device for punching a workpiece into a bent structure, characterized in that: The shaping device comprises: The die is provided with a shaping groove; A male die is arranged opposite to the female die and is used to move toward the female die to punch the workpiece so that the workpiece is formed into the bent structure in the shaping groove; The coil as claimed in claim 1 is embedded in the die, and is used to introduce and extract electrical signals to remove stress at two bends of the workpiece.

7. The shaping device according to claim 6, characterized in that There are two coils, the two coils are symmetrically arranged in the concave mold, the connecting parts in the two coils are arranged opposite to each other, and the gap between the two coils ranges from 1 mm to 3 mm.

8. The shaping device according to claim 7, characterized in that Each of the coils further comprises: Two supporting ends corresponding to the two bending portions one by one, each supporting end being connected to an end of the corresponding bending portion away from the corresponding connecting portion, and the supporting end being used to connect an electrical input body for inputting electrical signals; A main body end connected to an end of the main body away from the connecting portion, the main body end being used to connect to an electrical output body that outputs electrical signals; The cross-sectional area of ​​the main body end is equal to the cross-sectional area of ​​the main body portion, and the lower surface of the main body end and the lower surfaces of the two support ends are located in the same plane.

9. The shaping device according to claim 6, characterized in that: A gap between a side of each of the bent portions close to the main body and a side of the main body close to the corresponding bent portion ranges from 8 mm to 12 mm.

10. The shaping device according to claim 6, characterized in that The gap between the upper surface of the coil and the bottom of the shaping slot ranges from 1 mm to 3 mm.

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