Hairpin coil staggered-layer bending forming device and equipment

Abstract

The utility model provides a hairpin coil staggered layer bending forming device and equipment, the device comprises a forming frame, a first extrusion assembly and a second extrusion assembly, and the forming frame is provided with a top seat; the first extrusion assembly comprises a first extrusion block and a second extrusion block, the first extrusion block and the second extrusion block are located on the two opposite sides in the thickness direction of the card issuing coil respectively, and at least one of the first extrusion block and the second extrusion block can move relative to the top base in the thickness direction of the card issuing coil; the second extrusion assembly comprises a plurality of third extrusion blocks and a plurality of fourth extrusion blocks, the plurality of third extrusion blocks are stacked on the first extrusion block, and the plurality of third extrusion blocks can move relative to the first extrusion block in the thickness direction of the card issuing coil; the multiple fourth extrusion blocks are stacked on the second extrusion block and can move relative to the second extrusion block in the thickness direction of the hairpin coil. According to the utility model, the forming precision and the production efficiency of the hairpin coil can be improved, and the overall quality and the yield of products are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor manufacturing technical field, concretely relates to a hairpin coil staggered layer pressure bending forming device and a hairpin coil staggered layer pressure bending forming equipment. BACKGROUND

[0002] With the development of motor products to miniaturization, the motor adopting hairpin coil winding often reduces the size of stator to improve performance and reduce cost. But this will easily reduce the winding height and cause the interference between the shoulder part (the bending part for electrical connection) of hairpin coil and the structure of stator core.

[0003] In the related art, although it is proposed to form an outward expansion area at the shoulder part to avoid interference, most of the hairpin coil forming devices on the market are difficult to accurately form the outward expansion area in limited space, especially there are problems such as poor forming precision, low efficiency, and difficult shape control, which leads to coil deformation, large size deviation, and low yield, hindering the miniaturization and high efficiency of the motor. SUMMARY

[0004] The utility model is made based on the discovery and understanding of the inventor on the following facts and problems:

[0005] In the optimization of the size of the stator of the motor, reducing the size of the stator is an effective way to improve the power density of the motor, reduce the weight, and reduce the cost. However, this design adjustment directly leads to the reduction of the winding height, especially in the motor using hairpin coil as the winding form, the problem is particularly prominent. Specifically, when the size of the stator is reduced and the winding height is reduced, the shoulder part of the hairpin coil (i.e. the part of the coil that bends outward at both ends to achieve electrical connection) is prone to interfere with the stator core or other adjacent structures, which not only increases the difficulty of motor assembly, but also may affect the running stability and electrical performance of the motor.

[0006] In the related art, although it is proposed to form an outward expansion area at the shoulder part to avoid interference, however, although there are various hairpin coil forming devices on the market at present, most of them are difficult to accurately form the outward expansion area at the shoulder part in limited space. The existing devices have obvious deficiencies in forming precision, production efficiency, and shape control of the outward expansion area, which leads to frequent problems such as coil deformation, large size deviation, and low yield in the production process, and seriously restricts the development process of motor products to miniaturization and high efficiency.

[0007] Therefore, the embodiments of the utility model propose a hairpin coil staggered layer pressure bending forming device and a hairpin coil staggered layer pressure bending forming equipment, which can improve the forming precision and production efficiency of the hairpin coil, and further improve the overall quality and yield of the product.

[0008] The hairpin coil staggered layer press bending forming device provided by the utility model has the advantages that the forming precision and production efficiency of the hairpin coil are improved, and the overall quality and yield of the product are improved.

[0009] The forming frame has a top seat.

[0010] The first extrusion assembly includes a first extrusion block and a second extrusion block, the first extrusion block and the second extrusion block are arranged on the top seat, the first extrusion block and the second extrusion block are respectively located on opposite sides in the thickness direction of the hairpin coil, and at least one of the first extrusion block and the second extrusion block is movable relative to the top seat in the thickness direction of the hairpin coil.

[0011] The second extrusion assembly includes a plurality of third extrusion blocks and a plurality of fourth extrusion blocks, the third extrusion blocks and the fourth extrusion blocks correspond to each other, the plurality of third extrusion blocks are arranged in layers on the first extrusion block, the plurality of third extrusion blocks are movable relative to the first extrusion block in the thickness direction of the hairpin coil, so as to protrude or contract relative to the first extrusion block in the thickness direction of the hairpin coil, the plurality of fourth extrusion blocks are arranged in layers on the second extrusion block, and the plurality of fourth extrusion blocks are movable relative to the second extrusion block in the thickness direction of the hairpin coil, so as to protrude or contract relative to the second extrusion block in the thickness direction of the hairpin coil.

[0012] In conclusion, the hairpin coil staggered layer press bending forming device provided by the utility model can improve the forming precision and production efficiency of the hairpin coil, and further improve the overall quality and yield of the product.

[0013] In some embodiments, the third extrusion block and the fourth extrusion block are each provided with at least two, the thickness of the first extrusion block is consistent with the thickness of the second extrusion block, the thickness of the third extrusion block is the same as the thickness of the fourth extrusion block in a one-to-one correspondence, and the thickness of the third extrusion block is smaller than the thickness of the first extrusion block.

[0014] In some embodiments, the hairpin coil has a width direction, the first extrusion assembly and the second extrusion assembly are each provided with a plurality of, the first extrusion assembly and the second extrusion assembly are arranged in a one-to-one correspondence, and the plurality of first extrusion assemblies and the plurality of second extrusion assemblies are arranged side by side along the width direction of the hairpin coil.

[0015] In some embodiments, the first extrusion block and the second extrusion block are each provided with a positioning column, the third extrusion block and the fourth extrusion block are each provided with a guide groove, and the guide groove is movably sleeved on the positioning column.

[0016] In some embodiments, the hairpin coil staggered lamination bending forming device further comprises a driving assembly, the driving assembly comprises a plurality of drivers, and the outputs of the plurality of drivers are connected to the first extrusion block, the second extrusion block, the third extrusion block and the fourth extrusion block one by one to drive the movement of the first extrusion block, the second extrusion block, the third extrusion block and the fourth extrusion block in the thickness direction of the hairpin coil.

[0017] In some embodiments, the driving assembly further comprises a plurality of transmission lead screws and a plurality of nuts, the transmission lead screws and the nuts are correspondingly screwed, the transmission lead screws are arranged at the outputs of the drivers, and the plurality of nuts are correspondingly arranged at the first extrusion block, the second extrusion block, the third extrusion block and the fourth extrusion block.

[0018] In some embodiments, the forming frame further comprises a base, the base is arranged opposite to the top seat, the base comprises a vertical support rod and a clamping jaw, the clamping jaw is arranged on the vertical support rod, and the clamping jaw is used for clamping the hairpin coil.

[0019] In some embodiments, a plurality of clamping jaws are arranged, and the plurality of clamping jaws are arranged at intervals along the length direction of the hairpin coil.

[0020] In some embodiments, the clamping jaw comprises a first clamping arm and a second clamping arm arranged oppositely, the first clamping arm has a first clamping groove, the second clamping arm has a second clamping groove, the first clamping groove and the second clamping groove are arranged oppositely, the first clamping groove and the second clamping groove define a receiving cavity, and the receiving cavity is used for inserting the pin of the hairpin coil.

[0021] In addition, the utility model provides a kind of hairpin coil staggered lamination bending forming equipment, including processing platform and the hairpin coil staggered lamination bending forming device provided by any one of the above embodiments, and the forming frame is arranged on the processing platform. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the three-dimensional schematic view of the hairpin coil staggered lamination bending forming device provided by an embodiment of the utility model.

[0023] Figure 2 It is the front view schematic view of the hairpin coil staggered lamination bending forming device provided by an embodiment of the utility model.

[0024] Figure 3 It is the sectional view schematic view of the hairpin coil staggered lamination bending forming device provided by an embodiment of the utility model.

[0025] Figure 4 It is the structure schematic view of the clamping jaw in the hairpin coil staggered lamination bending forming device provided by an embodiment of the utility model.

[0026] Reference numerals: 100, hairpin coil; 110, U-shaped part; 120, pin;

[0027] 10. Forming frame; 11. Top seat; 12. Base; 121. Vertical support rod; 122. Gripper; 1221. First gripping arm; 1222. Second gripping arm; 1223. Receiving cavity; 1224. Gripping surface;

[0028] 20. First extrusion assembly; 21. First extrusion block; 22. Second extrusion block; 23. Extrusion surface; 24. First extrusion space;

[0029] 30. Second extrusion assembly; 31. Third extrusion block; 32. Fourth extrusion block; 33. Second extrusion space; 34. Guide groove;

[0030] 40. Drive assembly; 41. Driver; 42. Lead screw. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] like Figures 1 to 4 As shown, the hairpin coil 100 has a thickness direction. An embodiment of this utility model provides a hairpin coil staggered bending forming device, which includes a forming frame 10, a first extrusion assembly 20, and a second extrusion assembly 30. The forming frame 10 has a top seat 11. The first extrusion assembly 20 includes a first extrusion block 21 and a second extrusion block 22, which are disposed on the top seat 11. The first extrusion block 21 and the second extrusion block 22 are respectively located on opposite sides in the thickness direction of the hairpin coil 100, and at least one of the first extrusion block 21 and the second extrusion block 22 is movable relative to the top seat 11 in the thickness direction of the hairpin coil 100. The second extrusion assembly 30 includes a plurality of third extrusion blocks 31 and a plurality of fourth extrusion blocks 32, with each third extrusion block 31 and fourth extrusion block 32 corresponding to the previous one. Multiple third extrusion blocks 31 are stacked on top of the first extrusion block 21. Each of the third extrusion blocks 31 is movable relative to the first extrusion block 21 in the thickness direction of the hairpin coil 100, allowing it to protrude or retract relative to the first extrusion block 21 in the thickness direction of the hairpin coil 100. Multiple fourth extrusion blocks 32 are stacked on top of the second extrusion block 22. Each of the fourth extrusion blocks 32 is movable relative to the second extrusion block 22 in the thickness direction of the hairpin coil 100, allowing it to protrude or retract relative to the second extrusion block 22 in the thickness direction of the hairpin coil 100.

[0033] Specifically, a first extrusion space 24 is formed between the first extrusion block 21 and the second extrusion block 22 in the first extrusion assembly 20, while a second extrusion space 33 can be formed between the third extrusion block 31 and the fourth extrusion block 32 in the second extrusion assembly 30. These two extrusion spaces together constitute the forming environment of the hairpin coil 100, which is used to place the hairpin coil 100.

[0034] The hairpin coil 100 has a U-shaped portion 110 and two pins 120, with the two pins 120 respectively located at both ends of the U-shaped portion 110. The connection point between the U-shaped portion 110 and the pins 120 can be referred to as the shoulder of the hairpin coil 100. Figure 1 The middle arrow indicates that the hairpin coil 100 has a length direction, a thickness direction, and a width direction. In the hairpin coil staggered bending forming apparatus provided by this utility model, the first extrusion component 20 is closer to the top seat 11 than the second extrusion component 30. That is, in the length direction of the hairpin coil 100, the part of the first extrusion component 20 that extrudes the hairpin coil 100 is closer to the U-shaped part 110 than the part of the second extrusion component 30 that extrudes the hairpin coil 100. This layout design makes the forming process more efficient and allows for better control of the deformation of the shoulder area of ​​the hairpin coil 100.

[0035] The second extrusion assembly 30 includes multiple third extrusion blocks 31 and a corresponding number of fourth extrusion blocks 32. These extrusion blocks are one-to-one, ensuring the precision and consistency of the forming process. These extrusion blocks are stacked on the first extrusion block 21 and the second extrusion block 22, forming a multi-level extrusion structure, providing more possibilities for the staggered bending of the hairpin coil 100. Specifically, the multiple third extrusion blocks 31 can move independently relative to the first extrusion block 21 in the thickness direction of the hairpin coil 100. They can protrude or contract relative to the first extrusion block 21 in the thickness direction of the hairpin coil 100 according to preset forming parameters, thereby forming the desired bending or staggered effect at a specific position. Similarly, the multiple fourth extrusion blocks 32 are also stacked in the same way and movably arranged on the second extrusion block 22. They work together with the third extrusion blocks 31 to complete the staggered bending forming task of the hairpin coil 100.

[0036] During the forming process of the hairpin coil 100, the third extrusion block 31 and the fourth extrusion block 32 in the second extrusion assembly 30 move according to the forming requirements. Specifically, one of the third extrusion block 31 and the fourth extrusion block 32 can move towards the second extrusion space 33, while the other can move away from the second extrusion space 33, and the two move the same distance, so that the second extrusion space 33 is misaligned relative to the first extrusion space 24. This misalignment design provides the necessary conditions for the staggered bending of the hairpin coil 100.

[0037] Subsequently, the first extrusion block 21 drives the third extrusion block 31 to move towards the first extrusion space 24, and the second extrusion block 22 also drives the fourth extrusion block 32 to move towards the first extrusion space 24. This synchronous movement ensures that the hairpin coil 100 receives uniform and stable pressure during the forming process, so that the shoulder area of the hairpin coil 100 forms an outward expansion deformation, meeting the use requirements of the hairpin coil 100 in electronic equipment.

[0038] In conclusion, the hairpin coil staggered layer pressure bending forming device provided by the utility model can improve the forming precision and production efficiency of the hairpin coil 100, thereby improving the overall quality and yield of the product.

[0039] In the embodiment, the first extrusion block 21, the second extrusion block 22, the third extrusion block 31 and the fourth extrusion block 32 all have an extrusion surface 23, which is designed as a smooth surface to ensure the smoothness of the outward expansion area of the hairpin coil 100.

[0040] In some embodiments, the third extrusion block 31 and the fourth extrusion block 32 are each provided with at least two, the thickness of the first extrusion block 21 and the thickness of the second extrusion block 22 are consistent, the thickness of the third extrusion block 31 and the thickness of the fourth extrusion block 32 are one-to-one corresponding and same, and the thickness of the third extrusion block 31 is smaller than the thickness of the first extrusion block 21. Not only does it embody the ingenuity and ingenuity of the hairpin coil staggered layer pressure bending forming device in structural design, but also highlights its efficiency and precision in the forming process.

[0041] Specifically, the number of the third extrusion block 31 and the fourth extrusion block 32 is set to at least two, which not only enhances the flexibility and controllability in the forming process, but also makes the device can adapt to more kinds of hairpin coil 100 forming requirements. Each third extrusion block 31 and a corresponding fourth extrusion block 32 are structurally matched to each other and jointly act on different parts of the hairpin coil 100 to achieve complex and precise forming effect.

[0042] Moreover, the thickness of the third extrusion block 31 and the thickness of the fourth extrusion block 32 are designed to be one-to-one corresponding and same. This means that in each pair of corresponding third extrusion block 31 and fourth extrusion block 32, their thicknesses are equal. This design ensures that the hairpin coil 100 is uniformly stressed on both sides during extrusion, avoiding forming deviation or damage caused by thickness difference.

[0043] The thickness of all the third extrusion blocks 31 is carefully designed to be smaller than that of the first extrusion block 21. The smaller thickness of the third extrusion blocks 31 makes them more flexible in adjusting the position and force during the extrusion process, thereby achieving fine control of the key parts such as the shoulder of the hairpin coil 100. At the same time, since the third extrusion blocks 31 and the fourth extrusion blocks 32 are stacked on the first extrusion block 21 and the second extrusion block 22, the smaller thickness also reduces the mutual interference and friction between them, improving the smoothness and accuracy of the molding process.

[0044] As shown in Figure 1 , Figure 3 In some embodiments, the first extrusion assembly 20 and the second extrusion assembly 30 are each provided with a plurality of, and the first extrusion assembly 20 and the second extrusion assembly 30 are arranged one-to-one. The plurality of first extrusion assemblies 20 and the plurality of second extrusion assemblies 30 are arranged side by side along the width direction of the hairpin coil 100, ensuring that each pair of extrusion blocks can accurately act on the corresponding part of the hairpin coil 100 during the molding process. In this embodiment, the first extrusion assembly 20 and the second extrusion assembly 30 are each provided with two.

[0045] Specifically, when the hairpin coil 100 needs to be press-bent in the width direction, the plurality of first extrusion assemblies 20 and the plurality of second extrusion assemblies 30 can be started simultaneously, and each independently and cooperatively acts on different width positions of the hairpin coil 100, thereby achieving efficient and uniform molding in the width direction of the hairpin coil 100.

[0046] In actual operation, this side-by-side design improves the molding efficiency, so that the molding task that originally needs to be completed in multiple steps can be completed efficiently at one time. On the other hand, it also ensures the consistency of the molding quality, because each extrusion assembly moves accurately according to the preset parameters and path, avoiding molding deviations caused by human operation or mechanical errors.

[0047] In some embodiments, the first extrusion block 21 and the second extrusion block 22 are each provided with a positioning column, and the third extrusion block 31 and the fourth extrusion block 32 are each provided with a guide groove 34, which is movably sleeved on the positioning column to guide and limit the movement direction of the third extrusion block 31 and the fourth extrusion block 32, preventing molding errors caused by deviation, and also making the relative position relationship between the extrusion blocks more stable and reliable.

[0048] As shown in Figure 1 , Figure 2 and Figure 3As shown, in some embodiments, the hairpin coil staggered laminated bending forming device further comprises a driving assembly 40, the driving assembly 40 comprises a plurality of drivers 41, the output ends of the plurality of drivers 41 are connected with the first extrusion block 21, the second extrusion block 22, the third extrusion block 31 and the fourth extrusion block 32 one by one, so as to correspondingly drive them to move in the thickness direction of the hairpin coil 100, not only ensuring the accuracy of power transmission, but also enabling each extrusion block to independently and coordinately move in the thickness direction of the hairpin coil 100 under the precise control of the driver 41.

[0049] Specifically, when it is necessary to adjust the position of a certain extrusion block, the corresponding driver 41 can be instructed by the control system to immediately respond and drive the extrusion block to move according to the preset parameters and path, so as to realize the precise bending forming of the hairpin coil 100, improve the forming efficiency, and ensure the consistency of the forming quality.

[0050] That is, each extrusion block can quickly and accurately move under the independent control of the driver 41, so that the entire forming process becomes more smooth and efficient, and the production cycle is greatly shortened. Secondly, the precise control of the driver 41 enables each extrusion block to maintain stable force and speed during movement, thereby avoiding forming deviations caused by human operation or mechanical errors, and ensuring that each hairpin coil 100 can reach the same forming standard.

[0051] Moreover, the screw rod, the nut and the guide groove 34 and the positioning column constitute a set of precise cooperative system. When it is necessary to adjust the position of the extrusion block, the extrusion block connected with the nut is driven to move by rotating the screw rod. At the same time, the cooperative action of the guide groove 34 and the positioning column ensures the directionality of the movement of the extrusion block, so that the extrusion block can accurately reach the predetermined position. This cooperation mode of the screw rod, the nut, the guide groove 34 and the positioning column not only improves the accuracy of the movement of the extrusion block, but also enhances the stability and reliability of the entire forming system.

[0052] Further, the driving assembly 40 further comprises a plurality of transmission screw rods 42 and a plurality of nuts, the transmission screw rod 42 and the nut are correspondingly screwed, the transmission screw rod 42 is arranged at the output end of the driver 41, and the plurality of nuts are correspondingly arranged on the first extrusion block 21, the second extrusion block 22, the third extrusion block 31 and the fourth extrusion block 32. That is, each nut is independently mounted on the first extrusion block 21, the second extrusion block 22, the third extrusion block 31 and the fourth extrusion block 32, forming an independent transmission unit. When the transmission screw rod 42 is rotated under the driving of the driver 41, the nut will move linearly along the axial direction of the transmission screw rod 42, so as to convert the rotary motion into linear motion, realizing the accurate transmission of the power of the driver 41 to the extrusion block.

[0053] Optionally, the driver 41 can be provided as a motor or a component such as a motor. In the embodiment, nuts can be respectively integrated in the first extrusion block 21, the second extrusion block 22, the third extrusion block 31 and the fourth extrusion block 32, which are not marked in the drawings.

[0054] As shown in Figure 1 , Figure 2 In some embodiments, the forming frame 10 further includes a base 12, which is arranged opposite to the top base 11. The base 12 includes a vertical support rod 121 and a clamping jaw 122 arranged on the vertical support rod 121. The clamping jaw 122 is used to clamp the hairpin coil 100 to achieve the fixation of the hairpin coil 100, so as to facilitate the extrusion of the hairpin coil 100 by the first extrusion assembly 20 and the second extrusion assembly 30 and ensure the stability of the hairpin coil 100 during the extrusion process.

[0055] Further, a plurality of clamping jaws 122 are arranged along the length direction of the hairpin coil 100, which achieves the multi-point clamping of the hairpin coil 100 and helps to improve the stability during the extrusion process.

[0056] Further, the vertical support rod 121 is provided with a sliding groove, and the clamping jaw 122 has a sliding part which is slidably arranged in the sliding groove, so as to be movable in the length direction of the vertical support rod 121. Thus, the position of the clamping jaw 122 can be adjusted according to the size of the hairpin coil 100, so as to ensure the stability during the extrusion process.

[0057] As shown in Figure 1 , Figure 4 In some embodiments, the clamping jaw 122 includes oppositely arranged first and second clamping arms 1221 and 1222. The first clamping arm 1221 has a first clamping groove, and the second clamping arm 1222 has a second clamping groove. The first and second clamping grooves are oppositely arranged and define a receiving cavity 1223. The receiving cavity 1223 is used to insert the pin 120 of the hairpin coil 100, which effectively prevents the pin 120 from shaking or shifting during the forming process and ensures the forming quality of the hairpin coil 100.

[0058] Further, the first and second clamping arms 1221 and 1222 can be made of elastic material, which can be self-adaptively adjusted according to the actual size and shape of the pin 120 of the hairpin coil 100 during the clamping process, so as to ensure the tightness and stability of the clamping. At the same time, the elastic material can also absorb the impact force and vibration generated during the clamping process to a certain extent, thereby reducing the damage to the hairpin coil 100 and the clamping jaw 122 itself.

[0059] Further, the first clamping arm 1221 and the second clamping arm 1222 each have a clamping surface 1224, and the clamping surface 1224 is provided with anti-skid texture or a material with high friction coefficient, such as a rubber or silicone gasket, to increase the friction with the hairpin coil 100 and ensure that the hairpin coil 100 does not slip or fall off due to external force or its own gravity during the forming process.

[0060] In addition, the utility model discloses an embodiment further provides a kind of hairpin coil staggered layer press bending forming equipment, it includes processing platform and the hairpin coil staggered layer press bending forming device provided by any one of the above embodiment, forming frame 10 is located on processing platform.

[0061] It should be noted that the hairpin coil staggered layer press bending forming device provided by the embodiment of the present application can be applied to the hairpin coil staggered layer press bending forming equipment, so the implementation principle and the technical effects generated in the hairpin coil staggered layer press bending forming equipment embodiment that are not mentioned can be referred to the corresponding contents in the foregoing hairpin coil staggered layer press bending forming device embodiment.

[0062] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0063] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0064] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0065] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or it only means that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or it only means that the horizontal height of the first feature is less than that of the second feature.

[0066] In the present application, the terms "one embodiment", "some embodiments", and the like are intended to mean that the specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0067] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A hairpin coil staggered bending forming device, characterized in that, The hairpin coil has a thickness direction, and the hairpin coil staggered bending forming device includes: A forming frame having a top seat; A first extrusion assembly, comprising a first extrusion block and a second extrusion block, wherein the first extrusion block and the second extrusion block are disposed on the top seat, and the first extrusion block and the second extrusion block are respectively located on opposite sides in the thickness direction of the hairpin coil, and at least one of the first extrusion block and the second extrusion block is movable relative to the top seat in the thickness direction of the hairpin coil; The second extrusion assembly includes a plurality of third extrusion blocks and a plurality of fourth extrusion blocks, each corresponding to a third extrusion block. The plurality of third extrusion blocks are stacked on top of the first extrusion block, and each of the plurality of third extrusion blocks is movable relative to the first extrusion block in the thickness direction of the hairpin coil to protrude or contract relative to the first extrusion block in the thickness direction of the hairpin coil. The plurality of fourth extrusion blocks are stacked on top of the second extrusion block, and each of the plurality of fourth extrusion blocks is movable relative to the second extrusion block in the thickness direction of the hairpin coil to protrude or contract relative to the second extrusion block in the thickness direction of the hairpin coil.

2. The hairpin coil staggered bending forming device according to claim 1, characterized in that, There are at least two of the third extrusion block and the fourth extrusion block. The thickness of the first extrusion block is the same as the thickness of the second extrusion block. The thickness of the third extrusion block corresponds one-to-one with the thickness of the fourth extrusion block, and the thickness of the third extrusion block is less than the thickness of the first extrusion block.

3. The hairpin coil staggered bending forming device according to claim 1, characterized in that, The hairpin coil has a width direction, and multiple first extrusion components and multiple second extrusion components are provided. The first extrusion components and the second extrusion components are arranged in a one-to-one correspondence, and multiple first extrusion components and multiple second extrusion components are arranged side by side along the width direction of the hairpin coil.

4. The hairpin coil staggered bending forming device according to claim 1, characterized in that, The first extrusion block and the second extrusion block are each provided with a positioning post, and the third extrusion block and the fourth extrusion block are each provided with a guide groove, which is movably fitted onto the positioning post.

5. The hairpin coil staggered bending forming device according to claim 1, characterized in that, It also includes a drive assembly, which includes multiple drivers. The outputs of the multiple drivers are connected to the first extrusion block, the second extrusion block, the third extrusion block and the fourth extrusion block in a one-to-one correspondence to drive them to move in the thickness direction of the hairpin coil.

6. The hairpin coil staggered bending forming device according to claim 5, characterized in that, The drive assembly also includes multiple lead screws and multiple nuts, which are screwed together. The lead screws are located at the output end of the driver, and the multiple nuts are located at the first pressing block, the second pressing block, the third pressing block, and the fourth pressing block.

7. The hairpin coil staggered bending forming device according to claim 1, characterized in that, The forming frame also includes a base, which is disposed opposite to the top seat. The base includes a vertical support rod and a clamp, which is disposed on the vertical support rod and is used to clamp the hairpin coil.

8. The hairpin coil staggered bending forming device according to claim 7, characterized in that, The clamps are provided in multiple manner, and the multiple clamps are arranged at intervals along the length direction of the hairpin coil.

9. The hairpin coil staggered bending forming device according to claim 7, characterized in that, The gripper includes a first gripping arm and a second gripping arm disposed opposite to each other. The first gripping arm has a first slot, and the second gripping arm has a second slot. The first slot and the second slot are disposed opposite to each other and define a receiving cavity for inserting the pin of the hairpin coil.

10. A hairpin coil staggered bending forming equipment, characterized in that, The device includes a processing platform and a hairpin coil staggered bending forming apparatus as described in any one of claims 1 to 9, wherein the forming frame is mounted on the processing platform.

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