Flat wire motor Hair-pin forming equipment

Abstract

The utility model discloses flat wire motor Hair-pin forming equipment, and belongs to the technical field of motor manufacturing. The two adjusting assemblies matched with the forming assembly are arranged in the forming equipment, and when an upper forming die in the forming assembly moves towards a lower forming die in the first direction, driving pieces in the adjusting assemblies are synchronously driven to move in the first direction to make contact with adjusting sliding pieces; and then the adjusting sliding piece is driven to move along the strip-shaped part (namely the wire leg) close to the U-shaped wire-shaped body so as to abut against the strip-shaped part. Thus, when the upper forming die and the lower forming die are combined to conduct 3D forming on a flat wire motor Hair-pin (namely, a U-shaped linear body), the wire foot part of the U-shaped linear body can be limited and cannot expand outwards through cooperation of the driving part and the adjusting sliding part in the adjusting assembly, and it is guaranteed that the size precision and the shape preserving capacity of the U-shaped linear body are good during 3D forming; and the structure is simple and easy to control, and the stability and accuracy of flat wire motor Hair-pin production are improved.

Description

Technical Field

[0001] This application relates to the field of motor manufacturing technology, and in particular to a hairpin forming device for flat wire motors. Background Technology

[0002] Currently, flat wire motors are being used more and more widely in existing motor applications. Because they use hairpin copper wire, the copper wire filling rate (commonly known as slot fill factor) inside the motor is higher, resulting in a larger magnetic flux of the entire motor. Ultimately, its energy conversion capability is superior to that of traditional motors.

[0003] However, the current process of using stamping to achieve three-dimensional forming of hair pins lacks necessary constraints on the hair pins, which leads to deformation problems during the three-dimensional forming of hair pins. Utility Model Content

[0004] This application provides a flat wire motor hairpin forming device. It solves the problem of deformation easily occurring during the three-dimensional forming of hairpins in the prior art. The technical solution is as follows:

[0005] On one hand, a flat wire motor hair-pin forming device is provided, the flat wire motor hair-pin forming device comprising:

[0006] Molding components and two sets of adjustment components;

[0007] The molding assembly includes: an upper molding die and a lower molding die arranged opposite each other along a first direction; the lower molding die has a first mounting area and a second mounting area arranged side by side on the side facing the upper molding die; the upper molding die is distributed in the first mounting area; a U-shaped linear body is located between the molding surfaces of the upper molding die and the lower molding die, and the two strip-shaped portions of the U-shaped linear body extend to the second mounting area;

[0008] The adjustment assembly includes: a driving component, an adjusting sliding component, and an elastic element. The driving component is connected to the side of the upper forming mold. The two adjusting sliding components are respectively located on both sides of the two strip-shaped portions and are slidably connected to the second mounting area. The two ends of the elastic element are respectively connected to the adjusting sliding component and the lower forming mold.

[0009] The driving member is configured to: move along the first direction and contact the adjusting slider, thereby driving the adjusting slider to move and abut against the strip-shaped portion; the elastic element is configured to generate elastic deformation under the driving of the adjusting slider, and to drive the adjusting slider to separate from the strip-shaped portion after the driving member separates from the adjusting slider.

[0010] Optionally, the end of the driving member facing the adjusting slider has a first wedge-shaped surface, and the end of the adjusting slider facing the driving member has an arcuate convex surface that mates with the first wedge-shaped surface, or a second wedge-shaped surface.

[0011] Optionally, the adjusting slider includes a slider and an adjusting block, wherein the slider is slidably connected to the second mounting area, and the adjusting block is fastened to the top of the slider;

[0012] The driving component is configured such that, after moving along the first direction and contacting the slider, it drives the adjusting block to abut against the strip-shaped portion via the slider.

[0013] Optionally, the adjusting block has an oblong hole, and the slider has a connecting hole communicating with the oblong hole; the adjusting slider further includes a fastener, one end of which passes through the oblong hole and connects to the connecting hole.

[0014] Optionally, the lower molding die has grooves distributed in the second mounting area, the extending direction of the grooves is parallel to the sliding direction of the slider, and a portion of the slider is located in the grooves and slidably connected to the grooves;

[0015] The elastic element is located within the groove, and both ends of the elastic element are connected to the lower forming mold and the portion of the slider located within the groove, respectively.

[0016] Optionally, the slider includes: a slider body and a protrusion, the slider body being located inside the slide groove and slidably connected to the slide groove, and the protrusion being located outside the slide groove and fixedly connected to the top of the slider body and used to cooperate with the driving component;

[0017] The elastic element is distributed between the side of the slider body facing the strip-shaped portion and the bottom wall of the groove.

[0018] Optionally, the adjusting slider further includes a pressure plate, which is fixed to the opening edge of the slide groove, and the orthographic projection of the pressure plate on the plane where the opening of the slide groove is located overlaps with the orthographic projection of the edge portion of the slider body on the plane where the opening of the slide groove is located.

[0019] Optionally, the adjustment assembly further includes: a side baffle, the side baffle being located on the side of the adjustment slider opposite to the strip-shaped portion and being fastened to the lower forming mold;

[0020] There is a gap between the side baffle and the adjusting slider, and the driving member is located in the gap after it comes into contact with the adjusting slider.

[0021] Optionally, the lower forming die has a first protrusion that matches the shape of the U-shaped linear body on the side facing the upper forming die, and a first forming surface on the first protrusion; the upper forming die has a second protrusion that matches the shape of the U-shaped linear body on the side facing the lower forming die, and a second forming surface on the second protrusion.

[0022] The molding assembly further includes: two limiting blocks and a positioning post fixed in the first installation area. The two limiting blocks are distributed outside the area enclosed by the U-shaped linear body and are respectively disposed corresponding to the two ends of the bent portion of the U-shaped linear body. The positioning post is distributed within the area enclosed by the U-shaped linear body and corresponds to the central area of ​​the bent portion of the U-shaped linear body.

[0023] The beneficial effects of the technical solutions provided in this application include at least the following:

[0024] A flat wire motor hairpin forming device includes two sets of adjusting components that cooperate with the forming assembly within the forming device. When the upper forming mold in the forming assembly moves towards the lower forming mold in a first direction, it simultaneously drives the driving component in the adjusting assembly to move in the first direction and contact the adjusting sliding component. This, in turn, drives the adjusting sliding component to move along the strip-shaped portion (i.e., the lead) of the U-shaped wire to abut against the strip-shaped portion. Thus, during the 3D forming of the flat wire motor hairpin (i.e., the U-shaped wire) by the combination of the upper and lower forming molds, the cooperation of the driving component and the adjusting sliding component in the adjusting assembly limits the lead portion of the U-shaped wire to prevent outward expansion, ensuring good dimensional accuracy and shape retention during 3D forming. Furthermore, the device has a simple structure and is easy to operate, improving the stability and precision of flat wire motor hairpin production. Additionally, after 3D forming is complete, the upper forming mold moves upward, causing the driving component to move upward. At this time, the adjusting sliding component resets under the action of an elastic element, ensuring that the formed U-shaped wire is smoothly removed from the forming assembly. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a flat wire motor hairpin forming device provided in an embodiment of this application;

[0027] Figure 2 yes Figure 1An exploded view of a flat wire motor hairpin forming device is shown.

[0028] Figure 3 yes Figure 1 The image shows a front view of a flat wire motor hairpin forming device;

[0029] Figure 4 yes Figure 1 The diagram shows a partial structural cross-sectional view of the flat wire motor hairpin forming equipment;

[0030] Figure 5 This is a partial structural schematic diagram of a flat wire motor hairpin forming device provided in an embodiment of this application;

[0031] Figure 6 yes Figure 5 An exploded view of part of the structure of the flat wire motor hairpin forming equipment is shown;

[0032] Figure 7 yes Figure 5 The diagram shows a partial structural cross-sectional view of the flat wire motor hairpin forming equipment;

[0033] Figure 8 This is a partially exploded schematic diagram of another flat wire motor hairpin forming device provided in the embodiments of this application;

[0034] Figure 9 This is a partially exploded schematic diagram of another flat wire motor hairpin forming device provided in the embodiments of this application;

[0035] Figure 10 This is a schematic diagram of the structure of a molding upper mold provided in an embodiment of this application;

[0036] Figure 11 This is a partial structural cross-sectional view of a flat wire motor hairpin forming device provided in an embodiment of this application.

[0037] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0040] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0041] This application provides a flat wire motor hairpin forming device. By incorporating two sets of adjusting components 200 that cooperate with a forming assembly 100 within the forming device, when the upper forming mold 101 in the forming assembly 100 moves along a first direction f1 towards the lower forming mold 102, it simultaneously drives the driving component 201 in the adjusting components 200 to move along the first direction f1 and contact the adjusting sliding component 202. This, in turn, drives the adjusting sliding component 202 to move along the strip-shaped portion A1 (i.e., the lead) near the U-shaped wire A to abut against the strip-shaped portion A1. Thus, when the upper forming mold 101 and the lower forming mold 102 combine to 3D form the flat wire motor hairpin (i.e., the U-shaped wire), the cooperation of the driving component 201 and the adjusting sliding component 202 in the adjusting components 200 can limit the lead portion of the U-shaped wire A, preventing it from expanding outwards. This ensures good dimensional accuracy and shape retention during 3D forming of the U-shaped wire, and the simple structure and easy operation improve the stability and precision of flat wire motor hairpin production. In addition, after the 3D molding is completed, the upper molding mold 101 moves upward, driving the drive component 201 to move upward. At this time, the adjusting sliding component 202 is reset under the action of the elastic element 203, ensuring that the molded U-shaped linear body can be smoothly removed from the molding component 100.

[0042] The following examples illustrate the specific implementation of the hairpin forming equipment for flat wire motors:

[0043] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , Figure 1 This is a schematic diagram of the structure of a flat wire motor hairpin forming device provided in an embodiment of this application. Figure 2 yes Figure 1The diagram shown is an exploded view of a flat wire motor hairpin forming device. Figure 3 yes Figure 1 The image shown is a front view of a flat wire motor hairpin forming device. Figure 4 yes Figure 1 The diagram shows a partial structural cross-sectional view of a flat wire motor hairpin forming device. The flat wire motor hairpin forming device may include: a forming assembly 100, two sets of adjustment assemblies 200, a mold frame 300, and an upper mold slider 400.

[0044] The forming component 100 in the flat wire motor hairpin forming equipment may include: a forming upper mold 101 and a forming lower mold 102 arranged opposite each other along a first direction f1. The forming lower mold 102 may have a first mounting area a1 and a second mounting area a2 arranged side by side on the side facing the forming upper mold 101. The forming upper mold 101 may be distributed in the first mounting area a1 of the forming lower mold 102. A U-shaped wire A may be located between the forming surface m1 of the forming upper mold 101 and the forming surface m2 of the forming lower mold 102, and the two strip-shaped portions A1 of the U-shaped wire A extend to the second mounting area a2 of the forming lower mold 102.

[0045] The adjustment assembly 200 in the flat wire motor hairpin forming equipment may include a drive component 201, an adjustment slider 202, and an elastic element 203. The drive component 201 can be fastened to the side of the upper forming mold 101. The two adjustment sliders 202 in the two sets of adjustment assemblies 200 can be located on both sides of the two strip-shaped portions A1 in the U-shaped wire body A and can be slidably connected to the second mounting area a2 of the lower forming mold 102. Here, the two adjustment sliders 202 in the two sets of adjustment assemblies 200 can correspond to the two strip-shaped portions A1 in the U-shaped wire body A. The two ends of the elastic element 203 can be connected to the adjustment slider 202 and the lower forming mold 102 respectively.

[0046] The driving member 201 can be configured to move along the first direction f1 and contact the adjusting slider 202, thereby driving the adjusting slider 202 to move along a direction close to the strip portion A1 in the corresponding U-shaped linear body A to abut against the side of the strip portion A1. The elastic element 203 can be used to generate elastic deformation under the action of the adjusting slider 202, and after the driving member 201 separates from the adjusting slider 202, drive the adjusting slider 202 to move along a direction away from the strip portion A1 in the corresponding U-shaped linear body A to separate from the strip portion A1.

[0047] The mold base 300 has an upper mounting groove b1 and a lower mounting groove b2 that are opposite to and communicate with each other along a first direction f1. The upper mold slider 400 can be fastened to the side of the upper forming mold 101 opposite to the lower forming mold 102. The upper mold slider 400 can be installed in the upper mounting groove b1 and slidably connected to it. The lower forming mold 102 in the forming assembly 100 can be fitted into the lower mounting groove b2 for fixation. Here, the upper mold slider 400 can be connected to a cylinder assembly, and the cylinder drive assembly can be used to drive the upper mold slider 400 and the upper forming mold 102 to move up and down along the first direction f1.

[0048] For example, this section provides an illustrative description of the 3D forming of hairpins using a flat wire motor hairpin forming device:

[0049] First, the 3D molding initial upper mold slider and the molding upper mold are lifted to a certain height by the external cylinder assembly, the U-shaped flat copper wire is placed on the molding surface of the molding lower mold, and the U-shaped flat copper wire is pre-pressed to keep its position stable;

[0050] Then, the cylinder assembly pushes the upper mold slider and the forming upper mold to move downwards, and the driving parts on both sides push the corresponding adjusting sliding parts to slide towards the center. The adjusting sliding parts will then approach the lead of the flat copper wire. At the same time, the pre-pressure rod installed on the forming upper mold presses down on the surface of the flat copper wire first, restricting the movement of the lead.

[0051] Afterwards, the upper forming mold continues to move down until the forming is in place. At this time, the end face of the preload rod is smoothly connected to the forming surface of the upper forming mold, and the sliding parts on both sides restrict the outward expansion of the lines.

[0052] Finally, after molding is completed, the upper mold moves upward. At this time, the pre-pressure rod is still pressing on the wire foot to ensure smooth demolding without sticking. After the two drive parts move upward, the sliding parts are adjusted and reset under the action of the elastic element. After the upper mold is reset, the flat copper wire is taken out to complete the 3D molding.

[0053] Please refer to the following in this application: Figure 5 , Figure 6 and Figure 7 , Figure 5 This is a partial structural schematic diagram of a flat wire motor hairpin forming device provided in an embodiment of this application. Figure 6 yes Figure 5 The diagram shown is an exploded view of part of the structure of the flat wire motor hairpin forming equipment. Figure 7 yes Figure 5The diagram shows a partial structural cross-sectional view of the flat wire motor hairpin forming device. The end of the driving member 201 facing the adjusting slider 202 may have a first wedge-shaped surface c1, and the end of the adjusting slider 202 facing the driving member 201 may have an arc-shaped convex surface or a second wedge-shaped surface c2 that mates with the first wedge-shaped surface c1 in the driving member 201. Thus, after the driving member 201 moves along the first direction f1, causing the first wedge-shaped surface c1 in the driving member 201 to contact the arc-shaped convex surface or the second wedge-shaped surface c2 in the adjusting slider 202, the two contact surfaces cooperate to drive the adjusting slider 202 to move along a direction close to the strip-shaped portion A1 in the corresponding U-shaped linear body A, thereby ensuring that the end of the adjusting slider 202 abuts against the side of the strip-shaped portion A1 in the corresponding U-shaped linear body A. It should be noted that the operator can determine the moving distance of the driving member 201 and the angle of the wedge-shaped surface based on the actual stroke of the adjusting slider 202.

[0054] Optional, such as Figure 5 , Figure 6 and Figure 7 As shown, the adjusting slider 202 in the adjusting assembly 200 may include an adjusting block 202a and a slider 202b. The slider 202b can be slidably connected to the second mounting area a2 in the lower mold 102, and the adjusting block 202a can be fastened to the top of the slider 202b. The driving member 201 can be configured to move along a first direction f1 and contact the slider 202b, then drive the adjusting block 202a to move along a direction close to the strip portion A1 in the corresponding U-shaped linear body A to abut against the strip portion A1. Thus, by providing the slider 202b and adjusting block 202a connected to each other in the adjusting slider 202, the slider 202b can cooperate with the driving member 201 to move, thereby driving the adjusting block 202a to move along a direction close to the strip portion A1 in the corresponding U-shaped linear body A.

[0055] Here, the slider 202b in the adjusting slider 202 can have an arcuate convex surface or a second wedge surface c2 that mates with the first wedge surface c1 in the driving member 201.

[0056] In the embodiments of this application, such as Figure 5 , Figure 6 and Figure 7As shown, the adjusting block 202a in the adjusting slider 202 may have a waist-shaped hole k1, and the slider 202b may have a connecting hole k2 communicating with the waist-shaped hole k1. The adjusting slider 202 may also include a fastener (not shown in the figure), one end of which can pass through the waist-shaped hole k1 and be fastened to the connecting hole k2 in the slider 202b. In this way, by providing a waist-shaped hole k1 in the adjusting block 202a, the adjusting block 202a can achieve secondary stroke adjustment on the slider 202b through the cooperation of the waist-shaped hole k1 and the fastener, which can adapt to U-shaped linear bodies A of different sizes and improve the flexibility of the adjusting slider 202. For example, the connecting hole k2 in the slider 202b can be a screw hole, and the fastener can be a screw.

[0057] Optional, such as Figure 5 , Figure 6 and Figure 7 As shown, the lower forming die 102 may have grooves C distributed in the second mounting area a2. The extending direction of the grooves C may be parallel to the sliding direction of the slider 202b, and a portion of the slider 202b may be located within the grooves C and slidably connected to the grooves C, while another portion of the slider 202b may be located outside the grooves C. An elastic element 203 may be located within the grooves C, and both ends of the elastic element 203 may be connected to the lower forming die 102 and the portion of the slider 202b located within the grooves C, respectively. Thus, by providing the grooves C in the second mounting area a2 of the lower forming die 102 and placing a portion of the slider 202b within the grooves C, the grooves C can provide a certain guiding and limiting effect on the movement of the slider 202b. Furthermore, the distribution of the elastic element 203 within the grooves can provide a certain radial limiting effect on the elastic deformation of the elastic element 203.

[0058] In the embodiments of this application, such as Figure 5 , Figure 6 and Figure 7As shown, slider 202b may include a slider body B1 and a protrusion B2. Slider body B1 can be located inside and slidably connected to slide groove C. Protrusion B2 can be located outside slide groove C and fixedly connected to the top of slider body B1 for cooperating with drive member 201. Elastic element 203 can be located between the side of slider body B1 facing the strip A1 in the corresponding U-shaped linear body A and the bottom wall of slide groove C. Thus, by distributing elastic element 203 between slider body B1 and the bottom wall of slide groove C, slider body B1 can compress elastic element 203 during sliding within slide groove C. After U-shaped linear body A is formed, drive member 201 separates from protrusion B2, allowing the compressed elastic element 203 to provide a reaction force to slider body B1, driving slider body B1 and protrusion B2 to move together in a direction away from the strip A1 in the corresponding U-shaped linear body A back to their initial position. For example, the elastic element 203 can be a helical spring or a sheet spring, etc., and this application embodiment does not specifically limit it.

[0059] For example, such as Figure 7 As shown, the slider body B1 may have a first limiting hole k3 on the side facing the strip portion A1 in the corresponding U-shaped linear body A, and the bottom wall of the slide groove C may have a second limiting hole k4 coaxially arranged with the first limiting hole k3. The first end of the elastic element 203 may be located in the first limiting hole k3, and the second end of the elastic element 203 may be located in the second limiting hole k4. It should be noted that in other possible implementations, the elastic element 203 may be located between the side of the slider body B1 away from the strip portion A1 and the bottom wall of the slide groove C, and both ends of the elastic element 203 may be connected to the slider body B1 and the bottom wall of the slide groove C respectively. In this way, when the slider body B1 moves in the slide groove C along the direction close to the strip portion A1 in the corresponding U-shaped linear body, the elastic element 203 can be stretched. After the U-shaped linear body A is formed, the driving component 201 separates from the protrusion B2, so that the stretched elastic element 203 can provide a reaction force to the slider body B1, driving the slider body B1 and the protrusion B2 to move together in the direction away from the strip A1 in the corresponding U-shaped linear body A and return to the initial position.

[0060] Here, when the slider 202b includes a protrusion B2, the end of the protrusion B2 away from the slider body B1 may have an arcuate convex surface or a second wedge surface c2 that mates with the first wedge surface c1 in the drive member 201.

[0061] Optional, such as Figure 5 , Figure 6 and Figure 7As shown, the adjusting slider 202 may further include a pressure plate 202c, which can be fixed to the opening edge of the slide groove C, and the orthographic projection of the pressure plate 202c on the plane where the opening of the slide groove C is located can overlap with the orthographic projection of the edge portion of the slider body B1 on the plane where the opening of the slide groove C is located. In this way, by limiting the edge portion of the slider body B1 in the slide groove C by the pressure plate 202c, it can be ensured that the slider body B1 will not separate from the slide groove C or tilt up in the slide groove C, thus ensuring the limiting effect of the adjusting slider 202 on the strip portion A1 in the U-shaped linear body A.

[0062] In the embodiments of this application, such as Figure 5 , Figure 6 and Figure 7 As shown, the adjustment assembly 200 may further include a side baffle 204, which can be located on the side of the adjustment slider 202 opposite to the strip portion A1 in the corresponding U-shaped linear body A and can be fastened to the side of the forming lower mold 102. There is a gap between the side baffle 204 and the side of the adjustment slider 202, and the drive member 201 can be positioned within this gap after contacting the adjustment slider 202. Thus, by setting the side baffle 204, it can bear the reaction force, ensuring that the drive member 201 can smoothly drive the adjustment slider 202, realizing the conversion between the vertical movement of the drive member 201 and the horizontal movement of the adjustment slider 202.

[0063] It should be noted that when the adjusting slider 202 includes the protrusion B2, there may be a gap between the side baffle 204 and the protrusion B2.

[0064] Optional, please refer to Figure 8 , Figure 9 , Figure 10 and Figure 11 , Figure 8 This is a partially exploded schematic diagram of another flat wire motor hairpin forming device provided in an embodiment of this application. Figure 9 This is a partially exploded schematic diagram of another flat wire motor hairpin forming device provided in the embodiments of this application. Figure 10 This is a schematic diagram of the structure of a molding upper mold provided in an embodiment of this application. Figure 11This is a partial structural cross-sectional view of a flat wire motor hairpin forming device provided in this application embodiment. The lower forming mold 102 facing the upper forming mold 101 may have a first protrusion 102a that matches the shape of the U-shaped wire A, and a first forming surface m2 located on the first protrusion 102a; the upper forming mold 101 facing the lower forming mold 102 may have a second protrusion 101a that matches the shape of the U-shaped wire A, and a second forming surface m1 located on the second protrusion 101a. The forming assembly 100 may further include: two limiting blocks 103 and a positioning post 104 fixed in the first mounting area a1. The two limiting blocks 103 are distributed outside the area enclosed by the U-shaped wire A and are respectively corresponding to the two ends of the bent portion A2 of the U-shaped wire A. The positioning post 104 is distributed within the area enclosed by the U-shaped wire A and corresponds to the central area of ​​the bent portion A2 of the U-shaped wire A. In this way, the U-shaped linear body A can be limited in the horizontal plane perpendicular to the first direction f1 by the two limiting blocks 103 and the positioning post 104, so as to ensure the stability of the U-shaped linear body A during 3D molding.

[0065] In the embodiments of this application, such as Figure 11 As shown, the upper forming mold 101 has a stepped hole T1 extending along the first direction f1, and the upper mold slider 400 has a mounting hole T2 communicating with the stepped hole T1. The flat wire motor hair-pin forming equipment may further include: a preload rod 500 and a first elastic element 600. One end of the preload rod 500 mates with the mating surface of the stepped hole T1, and the other end of the preload rod 500 is used to abut against the top surface (i.e., the flat copper wire lead surface) of the strip portion A1 of the U-shaped wire body A. A portion of the first elastic element 600 is located in the mounting hole, and another portion is located in the stepped hole T1. Both ends of the first elastic element 600 are in contact with the bottom wall of the mounting hole T2 and one end of the preload rod 500, respectively. Thus, when the upper forming mold 101 and the lower forming mold 102 are not in place, the end face of the other end of the preload rod 500 is pressed against the flat copper wire lead surface first under the elastic force of the first elastic element 600, restricting the movement of the wire lead. As the upper forming mold 101 continues to move downwards until it is in place with the lower forming mold 102, the end face of the other end of the pre-pressure rod 500 is flush with the second forming surface m1 and presses against the flat copper lead surface. After forming is completed, the upper forming mold 101 moves upwards. At this time, the pre-pressure rod 500 remains pressed against the lead under the action of the first elastic element 600, ensuring smooth demolding without sticking.

[0066] For example, the first elastic element 600 can be a spring or a sheet, etc., and this application embodiment does not specifically limit it.

[0067] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0068] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A flat wire motor hairpin forming device, characterized in that, include: Molding components and two sets of adjustment components; The molding assembly includes: an upper molding die and a lower molding die arranged opposite each other along a first direction; the lower molding die has a first mounting area and a second mounting area arranged side by side on the side facing the upper molding die; the upper molding die is distributed in the first mounting area; a U-shaped linear body is located between the molding surfaces of the upper molding die and the lower molding die, and the two strip-shaped portions of the U-shaped linear body extend to the second mounting area; The adjustment assembly includes: a driving component, an adjusting sliding component, and an elastic element. The driving component is connected to the side of the upper forming mold. The two adjusting sliding components are respectively located on both sides of the two strip-shaped portions and are slidably connected to the second mounting area. The two ends of the elastic element are respectively connected to the adjusting sliding component and the lower forming mold. The driving member is configured to: move along the first direction and contact the adjusting slider, thereby driving the adjusting slider to move and abut against the strip-shaped portion; the elastic element is configured to generate elastic deformation under the driving of the adjusting slider, and to drive the adjusting slider to separate from the strip-shaped portion after the driving member separates from the adjusting slider.

2. The flat wire motor hairpin forming equipment according to claim 1, characterized in that, The end of the driving member facing the adjusting slider has a first wedge-shaped surface, and the end of the adjusting slider facing the driving member has an arc-shaped convex surface that mates with the first wedge-shaped surface, or a second wedge-shaped surface.

3. The flat wire motor hair-pin forming equipment according to claim 1 or 2, characterized in that, The adjusting slider includes a slider and an adjusting block, wherein the slider is slidably connected to the second mounting area, and the adjusting block is fastened to the top of the slider; The driving component is configured such that, after moving along the first direction and contacting the slider, it drives the adjusting block to abut against the strip-shaped portion via the slider.

4. The flat wire motor hairpin forming equipment according to claim 3, characterized in that, The adjusting block has an oblong hole, and the slider has a connecting hole communicating with the oblong hole; the adjusting slider further includes a fastener, one end of which passes through the oblong hole and is connected to the connecting hole.

5. The flat wire motor hair-pin forming equipment according to claim 3, characterized in that, The lower forming mold has grooves distributed in the second mounting area. The extending direction of the grooves is parallel to the sliding direction of the sliders. A portion of the sliders is located inside the grooves and is slidably connected to the grooves, while another portion of the sliders is located outside the grooves. The elastic element is located within the groove, and both ends of the elastic element are connected to the lower forming mold and the portion of the slider located within the groove, respectively.

6. The flat wire motor hairpin forming equipment according to claim 5, characterized in that, The slider includes a slider body and a protrusion. The slider body is located inside the slide groove and is slidably connected to the slide groove. The protrusion is located outside the slide groove and is fixedly connected to the top of the slider body and is used to cooperate with the driving component. The elastic element is located between the side of the slider body facing the strip-shaped portion and the bottom wall of the groove.

7. The flat wire motor hairpin forming equipment according to claim 6, characterized in that, The adjusting slider further includes a pressure plate, which is fixed to the opening edge of the slide groove, and the orthographic projection of the pressure plate on the plane where the opening of the slide groove is located overlaps with the orthographic projection of the edge portion of the slider body on the plane where the opening of the slide groove is located.

8. The flat wire motor hairpin forming equipment according to any one of claims 1-2 and 4-7, characterized in that, The adjustment assembly further includes: a side baffle, which is located on the side of the adjustment slider away from the strip-shaped portion and is fastened to the lower forming mold; There is a gap between the side baffle and the adjusting slider, and the driving member is located in the gap after it comes into contact with the adjusting slider.

9. The flat wire motor hair-pin forming equipment according to any one of claims 1-2 and 4-7, characterized in that, The lower forming die has a first protrusion that matches the shape of the U-shaped linear body on the side facing the upper forming die, and a first forming surface on the first protrusion; the upper forming die has a second protrusion that matches the shape of the U-shaped linear body on the side facing the lower forming die, and a second forming surface on the second protrusion. The molding assembly further includes: two limiting blocks and a positioning post fixed in the first installation area. The two limiting blocks are distributed outside the area enclosed by the U-shaped linear body and are respectively disposed corresponding to the two ends of the bent portion of the U-shaped linear body. The positioning post is distributed within the area enclosed by the U-shaped linear body and corresponds to the central area of ​​the bent portion of the U-shaped linear body.

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