Wire forming die

Abstract

The utility model relates to the technical field of punch die provides a kind of wire forming die, including upper die part and the lower die part that can be opened and closed with upper die part, upper die part includes upper punch, lower die part includes the lower punch and at least one positioning rod that form forming cavity with upper punch when closing mould, at least one positioning rod can rotate to enter and exit forming cavity relative to lower punch;At least one operating rod is provided on upper punch, for driving positioning rod to rotate and pressing the flat wire head in forming cavity on lower punch when closing mould.Compared with prior art, the wire forming die provided by the utility model can ensure the positioning and fixing of the wire head, thereby improving the positioning effect and forming effect.In addition, the rotating structure is used, so that the upper punch has high structural strength, and the service life of the die is longer.The rotating structure can also facilitate the taking and placing of the flat wire, improving the forming efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of stamping dies, and in particular to a line forming die. Background Technology

[0002] Currently, motors using rectangular cross-section conductors in their stator windings are called flat-wire motors (also known as pin motors). Unlike ordinary wound-rotor motors, flat-wire motors do not first wind round conductors into specific coils and then embed them into the stator slots by machine. Instead, the flat wire (also known as copper wire or flat copper wire; for the sake of consistent technical terminology, we will refer to it as flat wire below) is pre-formed, inserted into the stator slots, and then re-formed and welded at one or both ends to form the entire stator winding. Flat wire is beneficial for improving the slot fill factor of the motor. Generally, the slot fill factor of round-wire motors is around 50%, while the slot fill factor of flat-wire motors can reach over 70%. Based on the winding form, flat-wire motors can be further divided into hairpin windings (also known as hair clip windings), I-Pin windings (also known as I-clamp windings), and wave windings, etc. Hairpin-type flat wire windings are named for their resemblance to hairpins. Their advantage is that only one end needs to be welded, but their manufacturing process is more complex. After the hairpins are formed, the hairpin wires are inserted into the stator core in groups. Through processes such as flaring, twisting, welding, and impregnation, they are finally assembled into a finished motor stator. The hairpin forming machine process mainly consists of unwinding, decoating, length cutting, and hairpin forming.

[0003] Traditional molds consist of an upper mold and a lower mold, which together form a mold cavity. The upper mold has a forming part that punches the flat wire ends in the mold cavity. The lower mold has a limiting component that is slidably mounted on it. The limiting component can fix the flat wire in the mold cavity when the mold is closed. The upper mold also has a slanted ejector to drive the limiting component to move when the mold is closed. Because it needs to avoid the limiting component, the forming part is generally designed to be thin. As a result, the structural strength of the forming part is relatively weak, and the upper mold is prone to cracking and damage after a period of use. In addition, the limiting component uses a sliding method, which can easily cause wear to the lower mold. Furthermore, if the sliding distance is too small, the flat wire will not be positioned well and will easily deviate. Utility Model Content

[0004] The purpose of this utility model is to provide a wire forming mold to solve the technical problems of easy mold damage and unsatisfactory flat wire positioning in the prior art, which affect the forming effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wire forming mold is provided, including an upper mold part and a lower mold part that can open and close with the upper mold part. The upper mold part includes an upper punch, and the lower mold part includes a lower punch that forms a forming cavity with the upper punch when the mold is closed, and at least one positioning rod. The at least one positioning rod can rotate relative to the lower punch to enter and exit the forming cavity. At least one operating rod is provided on the upper punch for driving the positioning rod to rotate when the mold is closed and pressing the flat wire end in the forming cavity against the lower punch.

[0006] In some embodiments, the upper punch includes a wire end pressing portion for abutting against the wire end of the flat wire and a wire leg pressing portion for abutting against and connecting with the wire end pressing portion of the flat wire; the lower punch includes a forming member and a limiting member connected to the forming member, a forming groove is formed on the side surface of the forming member facing the upper punch, the limiting member protrudes from the forming groove, and the limiting member has a wire end forming wall and a wire leg forming wall connected to the wire end forming wall; the bottom surface of the wire end pressing portion, the bottom surface of the wire leg pressing portion, the surface of the forming groove, the wire end forming wall and the wire leg forming wall form a forming cavity; at least one positioning rod passes through the forming member and is located on one side of the wire end forming wall.

[0007] In some embodiments, an upper mounting groove is provided on the side surface of the thread end pressing portion facing the downward punch, one end of the operating rod is fixed in the upper mounting groove, and the operating rod extends out of the upper mounting groove.

[0008] In some embodiments, the upper mounting slot includes a first upper slot body for mounting an operating rod and a second upper slot body that communicates with the first upper slot body and allows the positioning rod to slide in and out.

[0009] In some embodiments, the forming component has a mounting groove, and the limiting component is removably fixed in the mounting groove of the forming component by fasteners.

[0010] In some embodiments, a lower assembly groove is provided on the bottom surface of the forming groove of the forming component, and a positioning rod is installed in the lower assembly groove.

[0011] In some embodiments, a mounting base is provided in the lower punch, a positioning rod is rotatably mounted on the mounting base, and an elastic element is provided between the mounting base and the positioning rod.

[0012] In some embodiments, a pair of line leg guide blocks are provided on the lower punch, each line leg positioning block having a guide slope located at its top and in contact with the line leg when the mold is closed, and the guide slope of each line leg positioning block extends obliquely from the top of the line leg positioning block toward the direction away from the upper punch and toward the other line leg positioning block.

[0013] In some embodiments, the upper mold portion further includes an upper fixed plate, and the upper punch is mounted on the upper fixed plate. The lower mold portion further includes a lower fixed plate, and the lower punch is mounted on the lower fixed plate. A pair of positioning stops are provided on the lower fixed plate. The distance between the two positioning stops is greater than the distance between the two lead guide blocks, and the top of the positioning stops is higher than the top of the lead guide blocks.

[0014] In some embodiments, the upper punch is provided with an anti-warping structure, which includes an anti-outward-turning pressure block and an anti-inward-shrinking pressure block. The anti-outward-turning pressure block has an anti-outward-turning inclined surface for abutting against the outer edge of the top end of the flat wire leg, and the anti-inward-shrinking pressure block has an anti-inward-shrinking inclined surface for abutting against the inner edge of the top end of the flat wire leg.

[0015] Compared with existing technologies, the wire forming mold provided by this utility model includes an upper mold part and a lower mold part. The upper mold part includes an upper punch, and the lower mold part includes a lower punch and a positioning rod. The positioning rod can rotate relative to the lower punch to enter and exit the forming cavity. An operating rod is provided on the upper punch to drive the positioning rod to rotate when the mold is closed and press the flat wire end in the forming cavity against the lower punch. In this way, the positioning rod is installed on the lower mold part by rotation. Driven by the operating rod, it rotates and fixes the flat wire end to the lower punch, which can ensure the positioning and fixing of the wire end, thereby improving the positioning effect and forming effect. In addition, the rotating structure can make the upper punch mold have higher structural strength and longer mold service life. The rotating structure can also facilitate the loading and unloading of flat wire and improve forming efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the wire forming mold and the flat wire when they are closed according to the embodiment of this utility model; Figure 2 This is a cross-sectional view of the wire forming mold and the flat wire when they are joined together, according to an embodiment of this utility model. Figure 3 This is a three-dimensional schematic diagram of the wire forming mold and flat wire during the mold opening process provided in this embodiment of the utility model; Figure 4 This is a three-dimensional schematic diagram of the upper fixing plate and the upper punch provided in this embodiment of the utility model; Figure 5 This is a three-dimensional schematic diagram of the lower fixing plate and the lower punch provided in this embodiment of the utility model; Figure 6 This is a three-dimensional schematic diagram of the limiting component and the lower punch provided in this embodiment of the utility model when they are separated; Figure 7 This is a three-dimensional schematic diagram of the lower fixing plate and the lower punch when they are separated, according to an embodiment of the present invention.

[0017] Explanation of main component symbols 100 - Wire forming mold; 100a - Forming cavity; 1 - Upper mold part; 11 - Upper punch; 111 - Wire end pressing part; 112 - Wire leg pressing part; 113 - Clearance groove; 114 - Upper assembly groove; 1141 - First upper groove body; 1142 - Second upper groove body; 12 - Operating lever; 13 - Upper fixing plate; 2 - Lower mold part; 21 - Lower punch; 211 - Forming component; 2110 - Forming groove; 2111 - Mounting groove; 2112 - Lower assembly groove; 212 - Limiting part Components; 2121-Wire end forming wall; 2122-Wire leg forming wall; 21a-Wire end forming space; 21b-Wire leg forming space; 22-Positioning rod; 23-Lower fixing plate; 24-Wire leg guide block; 241-Guide slope; 25-Positioning stop; 26-Anti-outward flipping pressure block; 261-Anti-outward flipping slope; 27-Anti-inward shrinking pressure block; 271-Anti-inward shrinking slope; 3-Anti-collision post; 4-Mounting base; 5-Elastic element; 200-Flat wire; 201-Wire end; 202-Wire leg. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the implementation of this utility model will be described in detail below with reference to the specific accompanying drawings.

[0020] For ease of description, the terms "front," "rear," "left," "right," "up," and "down" used below are consistent with the front, rear, left, right, up, and down directions of the accompanying drawings, but do not limit the structure of this utility model.

[0021] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0022] like Figures 1 to 7As shown, the wire forming mold 100 provided in this embodiment includes an upper mold part 1 and a lower mold part 2 that can open and close with the upper mold part 1. The upper mold part 1 includes an upper punch 11, and the lower mold part 2 includes a lower punch 21 that forms a forming cavity 100a with the upper punch 11 when the mold is closed, and at least one positioning rod 22. The at least one positioning rod 22 can rotate relative to the lower punch 21 to enter and exit the forming cavity 100a. At least one operating rod 12 is provided on the upper punch 11 for driving the positioning rod 22 to rotate when the mold is closed and pressing the flat wire 200 wire end 201 in the forming cavity 100a against the lower punch 21.

[0023] The aforementioned wire forming mold 100 includes an upper mold portion 1 and a lower mold portion 2. The upper mold portion 1 includes an upper punch 11, and the lower mold portion 2 includes a lower punch 21 and a positioning rod 22. The positioning rod 22 can rotate relative to the lower punch 21 to enter and exit the forming cavity 100a. An operating rod 12 is provided on the upper punch 11 to drive the positioning rod 22 to rotate during mold closing and press the flat wire 200 end 201 in the forming cavity 100a against the lower punch 21. In this way, the positioning rod 22 is mounted on the lower mold portion 2 in a rotating manner. Driven by the operating rod 12, it rotates and fixes the flat wire 200 end 201 to the lower punch 21, which can ensure the positioning and fixing of the end 201, thereby improving the positioning effect and forming effect. In addition, the rotating structure can make the upper punch 11 have higher structural strength, extend the mold service life, and facilitate the loading and unloading of the flat wire 200, thus improving the forming efficiency.

[0024] See Figures 1 to 3 The wire forming mold 100 provided in this embodiment includes an upper mold part 1 and a lower mold part 2 that can move relative to each other to achieve mold opening and closing. The upper mold part 1 includes an upper punch 11 and a lower punch 21. When the upper punch 11 and the lower punch 21 are closed, they form a forming cavity 100a to stamp and form the flat wire 200 placed in the forming cavity 100a. It should be noted that after the previous bending process, the flat wire 200 (i.e., copper wire with a rectangular cross-section) will form a planar structure that is roughly "∩" (or "∪"), which includes two wire legs 202 and a head 201 connected to the two wire legs 202 respectively. The head 201 is roughly "triangular". When passing through the wire forming mold 100, the forming cavity 100a will cause the head 201 of the flat wire 200 to bend and deform relative to the wire legs 202, thereby obtaining the three-dimensional shape of the flat wire 200 after forming.

[0025] See Figures 1 to 3In this embodiment, the upper mold part 1 includes an upper fixed plate 13, and the lower mold part 2 includes a lower fixed plate 23. The upper punch 11 is mounted on the upper fixed plate 13, and the lower punch 21 is mounted on the lower fixed plate 23. Anti-collision posts 3 are provided on both the upper fixed plate 13 and the lower fixed plate 23. In this way, the mold is mounted on the stamping machine (not shown) through the upper fixed plate 13 and the lower fixed plate 23. When the mold is closed, the anti-collision posts 3 can restrict the mold closing movement of the upper fixed plate 13 and the lower fixed plate 23, and prevent the upper punch 11 and the lower punch 21 from colliding and being damaged.

[0026] See Figures 3 to 7 In this embodiment, a positioning rod 22 is provided on the lower punch 21. The positioning rod 22 can be installed on the lower punch 21 and can rotate relative to the lower punch 21. The positioning rod 22 can also be installed on the lower fixing plate 23 and can rotate relative to the lower punch 21. An operating rod 12 is provided on the upper punch 11, which is used to drive the positioning rod 22 to rotate relative to the lower punch 21 when the mold is closed and press the flat wire 200 wire end 201 in the forming cavity 100a against the lower punch 21.

[0027] In this embodiment, the number of positioning rods 22 is not limited to two. The two positioning rods 22 are symmetrically arranged approximately on the center line of the lower mold part 2. The positioning rods 22 rotate around a pivot axis (not shown in the figure), and the pivot axis is parallel to the bottom surface of the lower punch 21. The number of operating rods 12 is not limited to two. The two operating rods 12 are fixed on the upper punch 11 and extend to the lower punch 21 along the opening and closing direction. The two operating rods 12 correspond one-to-one with the two positioning rods 22. It should be noted that before the mold is closed, the positioning rods 22 are inclined outward (away from the forming cavity 100a) from the bottom surface of the lower punch 21. When the mold is closed, they are pushed by the operating rods 12. The positioning rod 22 rotates relative to the lower punch 21 toward the forming cavity 100a, pressing the end 201 of the flat wire 200 against the lower punch 21. After the mold is closed, the positioning rod 22 is basically perpendicular to the bottom surface of the lower punch 21. Thus, in the open state, the positioning rod 22 tilts outward, facilitating the insertion and removal of the flat wire 200. After the mold is closed, the position of the flat wire 200 is fixed by the contact between the positioning rod 22 and the end 201 of the flat wire 200, thereby improving the forming effect and ensuring the forming quality of the flat wire 200. In addition, the positioning rod 22 is set perpendicular to the bottom surface of the lower punch 21, which will not cause excessive compression to the flat wire 200 and avoid damage to the flat wire 200.

[0028] See Figures 3 to 7The upper punch 11 provided in this embodiment includes a thread end pressing part 111 for abutting against the thread end 201 of the flat wire 200 and a thread leg pressing part 112 for abutting against the thread leg 202 of the flat wire 200 and connecting to the thread end pressing part 111. The thread end pressing part 111 and the thread leg pressing part 112 can be integrally formed or separately formed and then assembled and fixed together. The lower punch 21 includes a forming part 211 and a limiting part 212 connected to the forming part 211. The forming part 211 and the limiting part 212 can be integrally formed or separately formed and then assembled and fixed together. Together, a forming groove 2110 is formed on one side surface of the forming component 211 facing the upward-facing punch 11, and a limiting component 212 protrudes from the forming groove 2110. The limiting component 212 has a wire end forming wall 2121 and a wire leg forming wall 2122 connected to the wire end forming wall 2121. The bottom surface of the wire end pressing part 111, the bottom surface of the wire leg pressing part 112, the surface of the forming groove 2110, the wire end forming wall 2121 and the wire leg forming wall 2122 form a forming cavity 100a. The positioning rod 22 passes through the forming component 211 and is located on one side of the wire end forming wall 2121.

[0029] In this embodiment, the upper punch 11 includes a wire end pressing part 111 for abutting against the wire end 201 of the flat wire 200 and a wire leg pressing part 112 for abutting against the wire leg 202 of the flat wire 200 and connecting with the wire end pressing part 111. The number of wire leg pressing parts 112 is not limited to two, and the two wire leg pressing parts 112 are arranged at intervals. A clearance groove 113 is formed between the two wire leg pressing parts 112 and the wire end pressing part 111. The clearance groove 113 can be inserted into the limiting member 212 when the mold is closed. A forming groove 2110 is recessed on one side surface of the forming member 211 facing the upper punch 11. A limiting member 212 protrudes from the forming groove 2110. The cross-sectional shape of the limiting member 212 matches the shape of the wire end 201 of the flat wire 200. After the flat wire 200 is placed into the lower punch 21, the limiting member 212 is embedded in the wire end 201 of the flat wire 200. The limiting member 212 has a wire end forming wall 2121 and a leg forming wall 2122 connected to the wire end forming wall 2121. A wire-end forming space 21a is formed between the positioning rod 22, the forming groove 2110 of the forming component 211, and the wire-end forming wall 2121 of the limiting component 212, for inserting the wire end 201 of the flat wire 200; a wire-leg forming space 21b is formed between the groove wall of the forming groove 2110 of the forming component and the wire-leg forming wall 2122 of the limiting component 212, for inserting the wire leg 202 of the flat wire 200. It can be understood that when the flat wire 200 is placed on the lower punch 21, this... The end 201 of the flat wire 200 is placed into the end forming space 21a, and the part of the leg 202 near the end 201 is placed into the leg forming space 21b. After the mold is closed, the operating lever 12 pushes the positioning lever 22 to rotate, so as to push the end 201 onto the end forming wall 2121. The end pressing part 111 and the leg pressing part 112 are pressed into the end forming space 21a and the leg forming space 21b respectively, so as to form the end 201 and the leg 202 of the flat wire 200.

[0030] from Figure 4 As can be seen, in this embodiment, the wire end pressing part 111 and the wire leg pressing part 112 can be integrally formed. The upper assembly groove 114 is provided on the side surface of the downward-facing punch 21 of the wire end pressing part 111. The upper assembly groove 114 is, but is not limited to, a blind groove. One end of the operating rod 12 is fixed in the upper assembly groove 114. The operating rod 12 extends out of the upper assembly groove 114 along the mold closing direction. It should be noted that the wire end pressing part 111 is an integral structure with better overall strength.

[0031] Specifically, the upper assembly groove 114 includes a first upper groove 1141 for mounting the operating rod 12 and a second upper groove 1142 connected to the first upper groove 1141 and for the positioning rod 22 to slide in and out. It is worth noting that, to ensure effective contact between the positioning rod 22 and the flat wire 200, the cross-sectional area of ​​the positioning rod 22 is larger than that of the operating rod 12, and the cross-sectional area of ​​the first upper groove 1141 is smaller than that of the second upper groove 1142. After mold closing, the portion of the positioning rod 22 extending out of the lower punch 21 will be inserted into the second upper groove 1142.

[0032] See Figure 6 In this embodiment, the forming component 211 and the limiting component 212 are manufactured separately and then assembled and fixed together. The forming component 211 has an installation groove 2111, and the limiting component 212 is detachably fixed in the installation groove 2111 of the forming component 211 by fasteners. In this way, by manufacturing the forming component 211 and the limiting component 212 separately, it is easier to process the surface shape of the forming component 211 and the limiting component 212, and the difficulty of mold manufacturing is reduced.

[0033] See Figures 5 to 7 In this embodiment, a lower assembly groove 2112 is provided on the bottom surface of the forming groove 2110 of the forming component 211. The positioning rod 22 is installed in the lower assembly groove 2112. The shape of the lower assembly groove 2112 matches the upper assembly groove 114, that is, it can simultaneously accommodate the positioning rod 22 and the part of the upper punch 11 in the operating rod 12 when the mold is closed. Therefore, the specific shape of the lower assembly groove 2112 will not be described again.

[0034] See Figure 7 In this embodiment, a mounting base 4 is provided in the lower punch 21, and the positioning rod 22 is rotatably mounted on the mounting base 4 via a pivot shaft (not shown). The mounting base 4 is installed between the lower fixed plate 23 and the lower punch 21, and an elastic element 5 is provided between the mounting base 4 and the positioning rod 22. Thus, in the mold opening state, the positioning rod 22 is positioned outwardly under the push of the elastic element 5. In the mold closing state, the operating rod 12 drives the positioning rod 22 to rotate inward and compress the elastic element 5.

[0035] See Figure 1 , Figure 2 , Figure 3 , Figures 5 to 7In this embodiment, a pair of line leg guide blocks 24 are provided on the lower punch 21. Each line leg 202 positioning block has a guide slope 241 located at its top and in contact with the line leg 202 when the mold is closed. The guide slope 241 of each line leg 202 positioning block extends obliquely from the top of the line leg 202 positioning block away from the upper punch 11 and towards the other line leg 202 positioning block. In this way, during molding, the line leg 202 can be supported by the line leg guide blocks 24 and the movement of the line leg 202 can be guided by the guide slope 241.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figures 5 to 7 In this embodiment, a pair of positioning stops 25 are provided on the lower fixed plate 23. The distance between the two positioning stops 25 is greater than the distance between the two line guide blocks 24. The top of the positioning stops 25 is higher than the top of the line guide block 24. It should be noted that after the flat wire 200 is placed in, the line leg 202 first abuts against the top of the positioning stops 25. As the upper punch 11 and the lower punch 21 close, the line leg 202 of the flat wire 200 gradually retracts inward and slides onto the line guide block 24. In this way, the line leg 202 can be initially positioned before molding, which improves the molding effect.

[0037] See Figures 1 to 4 In this embodiment, the upper punch 11 is provided with an anti-warping structure, which includes an anti-outward-turning pressure block 26 and an anti-inward-shrinking pressure block 27. The anti-outward-turning pressure block 26 has an anti-outward-turning inclined surface 261 for abutting against the outer edge of the top end of the flat wire 200 leg 202, and the anti-inward-shrinking pressure block 27 has an anti-inward-shrinking inclined surface 271 for abutting against the inner edge of the top end of the flat wire 200 leg 202. In this way, by adopting the anti-warping structure composed of the anti-outward-turning pressure block 26 and the anti-inward-shrinking pressure block 27, the leg 202 can be guaranteed to deform downward and inward during mold closing, so as to avoid the leg 202 from turning inward or outward, thereby improving the yield rate and ensuring the performance of the motor.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wire forming mold, characterized in that, The device includes an upper mold portion and a lower mold portion capable of opening and closing with the upper mold portion. The upper mold portion includes an upper punch, and the lower mold portion includes a lower punch that forms a molding cavity with the upper punch when the mold is closed, and at least one positioning rod. The at least one positioning rod is rotatable relative to the lower punch to enter and exit the molding cavity. The upper punch is provided with at least one operating rod for driving the positioning rod to rotate when the mold is closed and pressing the flat wire end in the molding cavity against the lower punch.

2. The wire forming mold according to claim 1, characterized in that, The upper punch includes a thread end pressing portion for abutting against the thread end of the flat wire and a thread leg pressing portion for abutting against and connecting with the thread end pressing portion of the flat wire; the lower punch includes a forming component and a limiting component connected to the forming component, a forming groove is formed on the side surface of the forming component facing the upper punch, the limiting component protrudes from the forming groove, the limiting component has a thread end forming wall and a thread leg forming wall connected to the thread end forming wall; the bottom surface of the thread end pressing portion, the bottom surface of the thread leg pressing portion, the surface of the forming groove, the thread end forming wall and the thread leg forming wall form the forming cavity; at least one of the positioning rods passes through the forming component and is located on one side of the thread end forming wall.

3. The wire forming mold according to claim 2, characterized in that, An upper assembly groove is provided on the side surface of the downward-facing punch of the thread end pressing part. One end of the operating rod is fixed in the upper assembly groove, and the operating rod extends out of the upper assembly groove.

4. The wire forming mold according to claim 3, characterized in that, The upper assembly slot includes a first upper slot body for mounting the operating rod and a second upper slot body that communicates with the first upper slot body and allows the positioning rod to slide in and out.

5. The wire forming mold according to claim 2, characterized in that, The forming component has a mounting groove, and the limiting component is detachably fixed in the mounting groove of the forming component by fasteners.

6. The wire forming die according to claim 2, characterized in that, A lower assembly groove is provided on the bottom surface of the forming groove of the forming component, and the positioning rod is installed in the lower assembly groove.

7. The wire forming die according to any one of claims 1 to 6, characterized in that, The lower punch is provided with a mounting base, the positioning rod is rotatably mounted on the mounting base, and an elastic element is provided between the mounting base and the positioning rod.

8. The wire forming die according to any one of claims 1 to 6, characterized in that, The lower punch is provided with a pair of line leg guide blocks. Each line leg positioning block has a guide slope located at its top and in contact with the line leg when the mold is closed. The guide slope of each line leg positioning block extends obliquely from the top of the line leg positioning block away from the upper punch and towards the other line leg positioning block.

9. The wire forming die according to claim 8, characterized in that, The upper mold portion further includes an upper fixing plate, and the upper punch is mounted on the upper fixing plate. The lower mold portion further includes a lower fixing plate, and the lower punch is mounted on the lower fixing plate. A pair of positioning stops are provided on the lower fixing plate. The distance between the two positioning stops is greater than the distance between the two line guide blocks, and the top of the positioning stops is higher than the top of the line guide blocks.

10. The wire forming die according to any one of claims 1 to 6, characterized in that, The upper punch is provided with an anti-warping structure, which includes an anti-outward-turning pressure block and an anti-inward-shrinking pressure block. The anti-outward-turning pressure block has an anti-outward-turning inclined surface for abutting against the outer edge of the top end of the flat wire leg, and the anti-inward-shrinking pressure block has an anti-inward-shrinking inclined surface for abutting against the inner edge of the top end of the flat wire leg.

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