A device for pre-inserting flat wire of a stator of a flat wire motor

Abstract

The application provides a device for pre-inserting flat wire of a stator of a flat wire motor, which comprises a tool gear disc assembly, an elastic pushing assembly, a pull claw assembly, a folding assembly and a rotary table assembly; the elastic pushing assembly is located on the folding assembly, the folding assembly and the tool gear disc assembly are located on the rotary table assembly, and the tool gear disc is connected with the elastic pushing assembly and the pull claw assembly. The application has the advantages of better wire grouping cup effect, avoidance of missing wire insertion, mixed wire insertion and paint film damage, and stable equipment operation.

Description

Technical Field

[0001] This invention relates to the field of motor assembly equipment technology, and in particular to a device for pre-inserting wires into the stator of a flat wire motor. Background Technology

[0002] With the country's strong advocacy for energy conservation and environmental protection, new energy vehicles have experienced rapid development. As a core component of new energy vehicles, the drive motor plays a crucial role. Among the components involved in drive motor assembly is the pre-assembly of pre-formed flat wire hair clips.

[0003] As the number of flat wire layers required for the stator of drive motors in new energy vehicles increases (currently reaching 8 layers) and the number of slots increases (currently reaching 96 slots), the number of hairpins corresponding to the stator flat wires also increases. If a hairpin is inserted incorrectly, the entire stator will fail. The large number of stator flat wire layers and slots greatly increases the difficulty of wire insertion. In production, it is required to ensure the consistency of the insertion position and the accuracy of the quantity.

[0004] Existing technical solutions mainly rely on manual insertion of wires directly into the stator core. However, manual insertion can result in missed wires, mixed wires, and damage to the enamel coating. The insertion consistency is poor, efficiency is low, and stability is also poor, which has a significant impact on subsequent stator assembly work. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention discloses a device for pre-inserting wires into the stator of a flat wire motor. The technical solution of this invention is implemented as follows:

[0006] A device for pre-inserting wires into the stator of a flat wire motor includes a tooling gear assembly, an elastic pushing assembly, a pull claw assembly, a retracting assembly, and a turntable assembly; wherein the elastic pushing assembly is located on the retracting assembly, the retracting assembly and the tooling gear assembly are located on the turntable assembly, and the tooling gear assembly connects the elastic pushing assembly and the pull claw assembly.

[0007] Preferably, the tooling gear assembly includes a first tooling gear, a second tooling gear, and a power mechanism; the first tooling gear and the second tooling gear are provided with retaining grooves corresponding to the stator wire slots, and the power mechanism is connected to the first tooling gear and the second tooling gear.

[0008] Preferably, the elastic pushing assembly includes a contact block, a connecting rod, an elastic element, and a fixing slot; the contact block is connected to the connecting rod, the elastic element is located in the fixing slot, and the contact block is located on the inner wall of the retaining slot of the second tooling gear.

[0009] Preferably, the elastic element is a spring.

[0010] Preferably, the pull claw assembly includes a first pull claw assembly, a second pull claw assembly, a first support bracket, and a second support bracket; the first pull claw assembly and the second pull claw assembly include pull claws, a connecting plate, and a pull claw power mechanism; the pull claws connect the connecting plate and the elastic pushing assembly.

[0011] Preferably, the first claw assembly and the second claw assembly have the same structure.

[0012] Preferably, the folding assembly includes a pull-down tab, a turntable, and a folding power mechanism; the folding power mechanism is connected to the pull-down tab.

[0013] Preferably, the turntable assembly includes a turntable and a connecting seat; the connecting seat is mounted on the turntable, and the tooling gear assembly, the elastic pushing assembly, the pull claw assembly, and the retracting assembly are fixed on the connecting seat.

[0014] The technical solution of this invention can solve the technical problems in the prior art that are prone to missing wires, mixed wires, and damage to the paint film, as well as poor wire insertion consistency, low efficiency, and poor stability. The technical solution of this invention, by improving the device for pre-inserting wires into the stator of a flat wire motor, can avoid inserting the wires into the wrong position, effectively prevent different wires from being mixed up or inserted in the wrong position, and the open long wire slots can avoid scratching the wires, provide good wire fixing effect, and effectively prevent missing wires and error lines. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the present invention;

[0019] Figure 3 This is a side view of the present invention;

[0020] Figure 4 This is a side cross-sectional view of the present invention;

[0021] Figure 5 This is an axis view of the turntable assembly;

[0022] Figure 6 This is a schematic diagram of pre-insertion wiring for an embodiment;

[0023] Figure 7 This is a schematic diagram of a flat wire hair clip.

[0024] In the above figures, the figure numbers indicate the following:

[0025] 1. Tooling gear plate assembly

[0026] 1-1, First tooling gear plate

[0027] 1-2, Second tooling gear plate

[0028] 1-3, Power mechanism

[0029] 2. Elastic pushing component

[0030] 2-1, Contact Block

[0031] 2-2, Connecting rod

[0032] 2-3, Elastic element

[0033] 2-4, Fixed slot

[0034] 3. Pulling claw assembly

[0035] 3-1, First puller assembly

[0036] 3-2, Second puller assembly

[0037] 3-3, First support bracket

[0038] 3-4, Second support bracket

[0039] 3-5, pull claw

[0040] 3-6, Connecting plate

[0041] 3-7, Puller claw power mechanism

[0042] 4. Collapse components

[0043] 4-1, including pull-down tabs

[0044] 4-2, Turntable

[0045] 4-3, retract the power mechanism

[0046] 5. Turntable assembly

[0047] 5-1, Turntable

[0048] 5-2, Connecting Seat

[0049] 610, Flat Wire Hairpin Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example

[0052] In one specific embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a device for pre-inserting wires into the stator of a flat wire motor includes a tooling gear assembly 1, an elastic pushing assembly 2, a pull claw assembly 3, a retracting assembly 4, and a turntable assembly 5; wherein, the elastic pushing assembly 2 is located on the retracting assembly 4, the retracting assembly 4 and the tooling gear assembly 1 are located on the turntable assembly 5, and the tooling gear assembly connects the elastic pushing assembly 2 and the pull claw assembly 3.

[0053] In this embodiment, the tooling toothed disc assembly 1 is used to support the hairpins, providing fixed support for all hairpins and limiting their inner and outer widths to prevent them from being inserted into the wrong position. Combined with the 360-degree rotatable turntable assembly 5, each rotation increments the insertion of a corresponding hairpin, preventing under-insertion. The tooling toothed disc assembly 1 is movable, raising the entire coiled spool for easy lifting and handling. The elastic pushing component 2 prevents the hairpins from being in a movable state, which could affect subsequent hairpin insertion. Under the action of the elastic pushing component 2, the positioned hairpins are well fixed in the predetermined position. The elastic pushing component 2 can also control the overall compression of the spool, making the coil more compact.

[0054] In use, the flat wire hairpin 610 needs to be pre-inserted first. The claw assembly 3 is controlled to pull open the elastic push assembly 2 to place the flat wire hairpin 610 into the tooling gear assembly 1. After detecting that the flat wire hairpin 610 is in place, the claw assembly 3 is controlled to release the elastic push assembly 2 to fix the flat wire hairpin 610. Then, the turntable assembly 5 is controlled to rotate, and the tooling gear assembly 1, elastic push assembly 2 and retracting assembly 4 on it rotate accordingly to perform the next wire insertion operation.

[0055] This embodiment has a simple structure, is easy to operate, and avoids the occurrence of missing or mixed wiring.

[0056] In a preferred embodiment, the tooling gear assembly 1 includes a first tooling gear 1-1, a second tooling gear 1-2, and a power mechanism 1-3; the first tooling gear 1-1 and the second tooling gear 1-2 are provided with retaining grooves corresponding to the stator wire slots, and the power mechanism 1-3 is connected to the first tooling gear 1-1 and the second tooling gear 1-2.

[0057] The elastic pushing assembly 2 includes a contact block 2-1, a connecting rod 2-2, an elastic element 2-3, and a fixing slot 2-4; the contact block 2-1 is connected to the connecting rod 2-2, the elastic element 2-3 is located in the fixing slot 2-4, and the contact block 2-1 is located on the inner wall of the retaining slot of the second tooling gear plate 1-2.

[0058] The pull claw assembly 3 includes a first pull claw assembly 3-1, a second pull claw assembly 3-2, a first support bracket 3-3, and a second support bracket 3-4; the first pull claw assembly 3-1 and the second pull claw assembly 3-2 include a pull claw 3-5, a connecting plate 3-6, and a pull claw power mechanism 3-7; the pull claw 3-5 connects the connecting plate 3-6 and the elastic pushing assembly 2.

[0059] The retractable assembly 4 includes a pull-down tab 4-1, a turntable 4-2, and a retractable power mechanism 4-3; the retractable power mechanism 4-3 is connected to the pull-down tab 4-1.

[0060] The turntable assembly 5 includes a turntable 5-1 and a connecting seat 5-2; the connecting seat 5-2 is mounted on the turntable 5-1, and the tooling gear assembly 1, the elastic pushing assembly 2, the pull claw assembly 3 and the retracting assembly 4 are fixed on the connecting seat 5-2.

[0061] This embodiment provides a specific application of a device for pre-inserting wire into a flat wire motor stator clip. In this embodiment, the first tooling gear 1-1 has a corresponding groove for the stator wire slot, which limits the inner width, outer width, and radial direction of the flat wire clip 610 and supports it. The second tooling gear 1-2 has a corresponding groove for the stator wire slot, which also limits the inner width, outer width, and radial direction of the flat wire clip 610. The power mechanism 1-3 is used to lift the pre-inserted flat wire clip 610 (coil) as a whole. The contact block 2-1 occupies the groove of the second tooling gear 1-2 and can push the flat wire clip 610 inward, pressing it into the groove of the first tooling gear 1-1. Depending on the type of flat wire clip 610, the first claw assembly 3-1 and the second claw assembly 3-2 cooperate. The claw 3-5 is used to pull the elastic element 2-3 radially outward to open the groove of the second tooling toothed disc 1-2, allowing the flat wire clip 610 to smoothly fall into the grooves of the first tooling toothed disc 1-1 and the second tooling toothed disc 1-2. After the flat wire clip 610 is fully inserted, the retracting power mechanism 4-3 in the retracting assembly 4 drives the pull tab 4-1 to move outward, so that the outer side of the spool in the radial direction is in a relaxed state. All contact blocks 2-1 are pressed against the inner wall of the groove of the second tooling toothed disc 1-2, that is, the groove of the second tooling toothed disc 1-2 is completely closed, and the groove of the first tooling toothed disc 1-1 is open. In this embodiment, the elastic element 2-3 is a spring. The first claw assembly 3-1 and the second claw assembly 3-2 in this embodiment have the same structure, so only one mold is needed during production. The parts of the two devices can also be interchanged during maintenance, resulting in lower costs.

[0062] During use, the flat wire hairpin 610 needs to be pre-inserted. The first pull claw assembly 3-1 and the corresponding second pull claw assembly 3-2 operate, and the pull claw 3-5 moves backward, pulling the contact block 2-1 open within the second tooling gear plate 1-2. This means that the second tooling gear plate 1-2 has exactly two correctly opened retaining slots, allowing the flat wire hairpin 610 to be dropped into the retaining slots of the second tooling gear plate 1-2 and landing on the retaining surface of the first tooling gear plate 1-1 (e.g., ...). Figure 5 (As shown).

[0063] Upon detecting that the flat wire hair clip 610 has fallen into place, the first pull claw assembly 3-1 and the corresponding second pull claw assembly 3-2 move, releasing the contact block 2-1, which then firmly adheres to the flat wire hair clip 610 (e.g., ...). Figure 1 (As shown).

[0064] After the contact block 2-1 is detected to be in close contact with the flat wire clip 610, the turntable 5-1 rotates, and the tooling gear assembly 1, the elastic pushing assembly 2, and the gathering assembly 4 rotate accordingly, while one wire lead in the insertion port remains in the same position.

[0065] In this embodiment, the tooling gear assembly 1 supports the hairpins, which can provide fixed support for all hairpins and limit the inner and outer widths of the hairpins, thus preventing the hairpins from being inserted into the wrong positions.

[0066] This embodiment features a unique hairpin insertion slot: when the slot is open, all other slots are closed, effectively preventing different hairpins from being mixed up or inserted into the wrong position. The open long slot hole also prevents the wire from being scratched.

[0067] This embodiment features an elastic pushing component 2: preventing the hairpin from being in a movable state and affecting subsequent hairpin insertion. Once in place, the hairpin is securely fixed in the predetermined position by the elastic elements 2-3. Furthermore, the overall movement of the elastic pushing component 2 controls the spool to be pressed tightly, making the spool more compact when gathered.

[0068] In this embodiment, turntable 4-2 can rotate 360 ​​degrees. Rotating one division allows for the insertion of a corresponding hair clip, thus avoiding missing any wires.

[0069] This embodiment has a fixed hairpin insertion position, and all wire slots are occupied by elastic elements 2-3. Only the wire slot that needs to be inserted is open, effectively avoiding mixed insertion of wires.

[0070] This embodiment has a movable tooling toothed disc assembly 1, which lifts the coiled spool as a whole, making it easy for the spool to be picked up and transported as a whole.

[0071] It should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for pre-inserting wires into the stator of a flat wire motor, characterized in that: It includes a tooling gear assembly, an elastic pushing assembly, a pull claw assembly, a retracting assembly, and a turntable assembly; wherein, the elastic pushing assembly is located on the retracting assembly, the retracting assembly and the tooling gear assembly are located on the turntable assembly, and the tooling gear assembly connects the elastic pushing assembly and the pull claw assembly; The tooling gear assembly includes a first tooling gear, a second tooling gear, and a power mechanism; the first tooling gear and the second tooling gear are provided with retaining grooves corresponding to the stator wire slots, and the power mechanism is connected to the first tooling gear and the second tooling gear. The elastic pushing assembly includes a contact block, a connecting rod, an elastic element, and a fixing slot; the contact block is connected to the connecting rod, the elastic element is located in the fixing slot, and the contact block is located on the inner wall of the retaining slot of the second tooling toothed disc; The pull claw assembly includes a first pull claw assembly, a second pull claw assembly, a first support bracket, and a second support bracket; the first pull claw assembly and the second pull claw assembly include pull claws, a connecting plate, and a pull claw power mechanism; the pull claw connects the connecting plate and the elastic pushing assembly; The contact block is used to occupy the retaining groove of the second tooling gear plate, push the flat wire hairpin inward, and press the flat wire hairpin into the retaining groove of the first tooling gear plate; The pull claw is used to pull the elastic element to move radially outward, so as to open the groove of the second tooling gear.

2. The device for pre-inserting wires into the stator of a flat wire motor according to claim 1, characterized in that: The elastic element is a spring.

3. The device for pre-inserting wires into the stator of a flat wire motor according to claim 2, characterized in that: The first claw assembly and the second claw assembly have the same structure.

4. The device for pre-inserting wires into the stator of a flat wire motor according to claim 3, characterized in that: The folding assembly includes a pull-down tab, a turntable, and a folding power mechanism; the folding power mechanism is connected to the pull-down tab.

5. The device for pre-inserting wires into the stator of a flat wire motor according to claim 4, characterized in that: The turntable assembly includes a turntable and a connecting seat; the connecting seat is mounted on the turntable, and the tooling gear assembly, the elastic pushing assembly, the pull claw assembly, and the retracting assembly are fixed on the connecting seat.

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