R angle variable device of flat wire stator hairpin

Abstract

The utility model relates to a flat wire stator card issuing R angle variable device, which comprises a rack mechanism, the rack mechanism is provided with a 2D card issuing servo torsion mechanism, the 2D card issuing servo torsion mechanism comprises a torsion assembly and a limit fixing block for fixing a flat wire, the torsion assembly comprises a vertically arranged rotating shaft, the top end of the rotating shaft is coaxially provided with a rotation limit block, and the top end of the rotating shaft is coaxially provided with the rotation limit block; the rotary limiting block is adjacent to the limiting fixing block, and the rotary limiting block carries the flat wire to rotate relative to the limiting fixing block so as to bend the flat wire into a specific angle; and the R-angle core column servo lifting mechanism comprises a lifting assembly and a detachably arranged R-angle core column, at least two groups of R angles with different sizes are arranged in the axial direction of the R-angle core column, and the lifting assembly can drive the R-angle core column to ascend and descend so as to be matched with the 2D hairpin servo torsion mechanism to enable the R angles at different bending positions of the same hairpin to be different. By means of the R-angle core column which is detachably arranged, forming of various R angles is integrated in one device, the occupied area and the economic cost are saved, and the rhythm of an original device is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of flat wire stators of drive motors, in particular to an R angle variable device for clipping flat wire stators. Background Art

[0002] As the new energy vehicle market continues to expand, demand for flat wire stators in its drive motors is growing, prompting manufacturers to seek more efficient and cost-effective production methods to meet market demand.

[0003] In the traditional flat wire stator production process, R-angle hairpin forming is a key step, which determines the shape and size of the wire in the stator slot.

[0004] However, existing hairpin forming technology has certain limitations. First, due to the increasing use of flat wire stators in motors, manufacturers tend to shorten the height of the crown end when designing products to reduce material usage and lower costs. This practice results in different R angles at the bend points within the same hairpin, posing a production challenge. Second, the mainstream solutions currently on the market typically involve a single machine capable of flat-plane forming of hairpins with only one R angle, or require multiple machines to complete the forming of different R angles. For example, to produce hairpins with different R angles, three or four sets of 2D forming parts are arranged in parallel. This not only increases production costs and project footprint, but also reduces production efficiency due to the additional time and labor required to replace molds or adjust equipment. Utility Model Content

[0005] The technical problem to be solved by the utility model is how to design a R-angle variable die for a flat wire stator hairpin.

[0006] In order to solve the above technical problems, the utility model provides a device for changing the R angle of a flat wire stator clip, comprising a frame mechanism, wherein the frame mechanism is provided with:

[0007] The 2D card issuance servo torsion mechanism includes a torsion assembly and a limit fixing block for fixing a flat wire. The torsion assembly includes a vertically arranged rotating shaft, and a rotation limit block is coaxially arranged at the top end of the rotating shaft. The rotation limit block is adjacent to the limit fixing block, and the rotation limit block carries the flat wire and can rotate relative to the limit fixing block to bend the flat wire to a specific angle.

[0008] The R-angle core column servo lifting mechanism includes a lifting component and a detachable R-angle core column. At least two groups of R angles of different sizes are arranged along the axial direction of the R-angle core column. The lifting component can drive the R-angle core column to rise and fall, and cooperate with the 2D card hairpin servo torsion mechanism to make the R angles at different bends of the same card different.

[0009] Furthermore, along the vertical direction of the frame mechanism, the R-angle core column servo lifting mechanism is located above the 2D card issuance servo torsion mechanism, wherein the R-angle core column is connected to the torsion assembly.

[0010] Furthermore, the frame mechanism includes a horizontal mounting plate and a vertical mounting plate arranged perpendicular to each other, wherein:

[0011] The torsion assembly is fixedly connected to the horizontal mounting plate via a mounting seat;

[0012] The lifting assembly is fixedly connected to the vertical mounting plate via a connecting plate.

[0013] Furthermore, the torsion assembly includes a torsion drive motor and a rotating block, wherein:

[0014] The horizontal mounting plate is provided with a through hole for the torsion drive motor to vertically pass through, and the torsion drive motor is fixed to the horizontal mounting plate via the mounting seat; a support plate for carrying the flat wire is provided on a side of the mounting seat facing away from the torsion drive motor, and the support plate is fixed to the mounting seat via a support column, and a bearing seat and a transition connection block contacting each other are further provided between the mounting seat and the support plate, wherein the bearing seat is fixedly connected to the mounting seat;

[0015] The rotating block is provided with a circular hole coaxial with the rotating shaft, and the circular hole fixes the R-angle core column.

[0016] Furthermore, the rotation limit block has a fan-shaped structure, and the edges of the rotation limit block and the limit fixing block are both provided with limit grooves for fixing the flat wire. When the rotation limit block is in the initial state, the straight flat wire can pass through the limit groove horizontally.

[0017] Furthermore, the support plate is provided with a fan-shaped opening for the rotation limit block to rotate freely.

[0018] Furthermore, the R angle of the R angle core column axially arranged is an eccentric circular structure to adapt to the requirements of the working gap when the flat wire is bent.

[0019] Furthermore, the lifting assembly includes a lifting motor, a lead screw and a nut block in sequence from top to bottom along the vertical direction, wherein the lead screw and the lifting motor are coaxially arranged.

[0020] Furthermore, the R-angle core column servo lifting mechanism also includes a guide assembly, which includes a vertically arranged base plate and a guide rail slider, wherein the guide rail slider can slide up and down along the axially protruding slide rail of the base plate; the R-angle core column is respectively connected to the guide rail slider and the nut block through a driving plate.

[0021] Furthermore, the base plate is fixedly connected to the vertical mounting plate via equal height rods.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The utility model integrates the forming of multiple R angles in one device through the detachable R angle core column, reduces the equipment investment, saves floor space and economic costs, and does not affect the original equipment beat. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure disclosed in an embodiment of the present utility model;

[0025] Figure 2 This is a schematic structural diagram of the frame mechanism disclosed in an embodiment of the present utility model;

[0026] Figure 3 This is a structural diagram of the 2D card issuing servo torsion mechanism disclosed in an embodiment of the present utility model;

[0027] Figure 4 This is a schematic structural diagram of the R-angle core column servo lifting mechanism disclosed in an embodiment of the present utility model;

[0028] Figure 5 This is a schematic structural diagram of an R-angle core column disclosed in an embodiment of the present utility model;

[0029] Figure 6 This is a schematic diagram of the gap when the flat wire is bent according to an embodiment of the present utility model;

[0030] Figure 7 This is a schematic diagram of different R angles of the same hairpin disclosed in an embodiment of the present utility model.

[0031] In the picture:

[0032] 000, flat wire;

[0033] 100, rack mechanism; 101, horizontal mounting plate; 102, vertical mounting plate;

[0034] 200, 2D card issuing servo torsion mechanism;

[0035] 211, limit fixing block;

[0036] 221, rotation limit block; 222, rotation block; 222a, circular hole; 223, transition connection block; 224, bearing seat; 225, support plate; 226, support column; 227, mounting seat; 228, torsion drive motor;

[0037] 300, R angle core column servo lifting mechanism;

[0038] 311, lifting motor; 312, lead screw; 313, connecting plate; 314, equal height rod;

[0039] 321. Base plate; 322. Guide rail slider; 323. Nut block; 324. Drive plate; 325. R-angle core column. DETAILED DESCRIPTION

[0040] In order to make the technical solution and technical effect of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments.

[0041] The utility model aims to provide a device for changing the R angle of a flat wire stator clip. The device is a further improvement based on the Chinese invention patent application number CN202311868979.X, and aims to achieve the goal of integrating multiple R angle forming functions into one device without affecting the original production rhythm.

[0042] refer to Figure 1 The utility model mainly includes a frame mechanism 100, which is provided with a 2D card issuing servo twisting mechanism 200 and an R-angle core column servo lifting mechanism 300.

[0043] refer to Figure 2 The frame mechanism 100 includes a horizontal mounting plate 101 and a vertical mounting plate 102 that are arranged perpendicular to each other, wherein the 2D card issuing servo torsion mechanism 200 is fixed on the horizontal mounting plate 101; the R-angle core column servo lifting mechanism 300 is fixed on the vertical mounting plate 102.

[0044] refer to Figure 3 The 2D card issuing servo twisting mechanism 200 mainly includes a twisting component and a position limiting fixing block 211 for fixing the flat wire 000. The twisting component is fixedly connected to the horizontal mounting plate 101 through a mounting seat 227.

[0045] The torsion assembly includes a vertically arranged rotating shaft, and a rotation limit block 221 is coaxially arranged at the top of the rotating shaft. The rotation limit block 221 is adjacent to the limit fixing block 211, and the rotation limit block 221 carries the flat wire 000 and can rotate relative to the limit fixing block 211 to bend the flat wire 000 into a specific angle.

[0046] Furthermore, the torsion assembly includes a torsion drive motor 228 and a rotating block 222, wherein:

[0047] The horizontal mounting plate 101 is provided with a through hole for the torsional drive motor 228 to pass vertically, and the torsional drive motor 228 is fixed to the horizontal mounting plate 101 through a mounting seat 227; a support plate 225 for supporting the flat wire 000 is provided on the side of the mounting seat 227 facing away from the torsional drive motor 228, and the support plate 225 is fixed to the mounting seat 227 through a support column 226, and a bearing seat 224 and a transition connection block 223 that are in contact with each other are also provided between the mounting seat 227 and the support plate 225, wherein the bearing seat 224 is fixedly connected to the mounting seat 227.

[0048] In particular, the rotating block 222 is provided with a circular hole 222 a coaxial with the rotating axis, and the circular hole 222 a fixes the R-angle core column 325 .

[0049] The rotation limit block 221 has a fan-shaped structure. Both the edges of the rotation limit block 221 and the fixed limit block 211 are provided with limiting grooves for fixing the flat wire 000. When the rotation limit block 221 is in the initial position, the linear drive mechanism can drive the straight flat wire 000 horizontally through the limiting grooves. The support plate 225 is provided with a fan-shaped opening for the rotation limit block 221 to rotate freely.

[0050] It should be noted that the linear drive mechanism in the present invention and the rotation limit block 221, the limit fixing block 211 and other structures in the 2D card issuing servo torsion mechanism 200 have been disclosed in the Chinese invention patent application number CN202311868979.X, so they will not be repeated here.

[0051] refer to Figure 4 The R-angle core column servo lifting mechanism 300 includes a lifting assembly and a detachably arranged R-angle core column 325. The lifting assembly is fixedly connected to the vertical mounting plate 102 through a connecting plate 313.

[0052] Along the vertical direction of the frame mechanism 100 , the R-angle core column servo lifting mechanism 300 is located above the 2D card issuance servo twisting mechanism 200 , wherein the R-angle core column 325 is connected to the twisting assembly.

[0053] At least two groups of R angles of different sizes are arranged along the axial direction of the R angle core column 325. The lifting assembly can drive the R angle core column to rise and fall, and cooperate with the 2D card issuing servo twisting mechanism 200 to make the R angles at different bends of the same card different.

[0054] From top to bottom in the vertical direction, the lifting assembly includes a lifting motor 311, a lead screw 312, and a nut block 323. The lead screw 312 is coaxial with the lifting motor 311. The lifting assembly is used to move the R-angle core column 325 up and down to select different R angles.

[0055] Furthermore, the R-angle core column servo lift mechanism 300 also includes a guide assembly, which comprises a vertically arranged base plate 321 and a guide rail slider 322. The guide rail slider 322 can slide up and down along a slide rail protruding axially from the base plate 321. The R-angle core column 325 is connected to the guide rail slider 322 and the nut block 323 via a drive plate 324. The base plate 321 is fixedly connected to the vertical mounting plate 102 via multiple sets of equal-height rods 314.

[0056] refer to Figure 5 The R-angle core column 325 is provided with different fillets A, B, and C in the axial direction. According to production needs, the lifting assembly drives the R-angle core column 325 to move up and down to select the working fillets A, B, and C. Figure 7 This is a schematic diagram showing that the same hairpin produced by the present invention has three different R angles.

[0057] Further, refer to Figure 6 The R angle of the R angle core column 325 axially arranged is an eccentric circle structure to adapt to the requirements of the working clearance when the flat wire 000 is bent.

[0058] The workflow of this utility model is as follows:

[0059] Step 1: In the initial state, the fillet A in the R-shaped core column 325 is in the working position, and the 2D card issuance servo twisting mechanism 200 drives the flat wire 000 to rotate and fold the first fillet of the card issuance, and the 2D card issuance servo twisting mechanism 200 returns to its original position;

[0060] Step 2: The linear drive mechanism drives the flat wire to move forward a certain distance along the limiting groove; at the same time, the lifting component in the R-corner core column servo lifting mechanism 300 drives the R-corner core column 325 to rise, so that the rounded corner B in the R-corner core column 325 is in the working position. The 2D card issuance servo twisting mechanism 200 drives the flat wire 000 to rotate and fold the second rounded corner of the card issuance, and the 2D card issuance servo twisting mechanism 200 returns to its original position;

[0061] Step 3: Repeat the steps in step 2 to place the fillet C in the R-corner core column 325 in the working position, thus completing the bending of the third fillet.

[0062] The lifting movement of the R-angle core column servo lifting mechanism 300 in the present invention is synchronized with the existing R-angle bending movement, so it does not affect the production rhythm of the original equipment.

[0063] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for changing the R angle of a flat wire stator hairpin, characterized in that: It comprises a frame mechanism (100), wherein the frame mechanism (100) is provided with: A 2D card issuing servo torsion mechanism (200) comprises a torsion assembly and a position-limiting fixed block (211) for fixing a flat wire (000), wherein the torsion assembly comprises a vertically arranged rotating shaft, a rotational position-limiting block (221) is coaxially arranged at the top end of the rotating shaft, the rotational position-limiting block (221) is adjacent to the position-limiting fixed block (211), and the rotational position-limiting block (221) carries the flat wire (000) and can rotate relative to the position-limiting fixed block (211) to bend the flat wire (000) into a specific angle; An R-angle core column servo lifting mechanism (300) comprises a lifting assembly and a detachably arranged R-angle core column (325), at least two groups of R angles of different sizes being arranged along the axial direction of the R-angle core column (325), the lifting assembly being capable of driving the R-angle core column to rise and fall, and cooperating with the 2D hairpin servo twisting mechanism (200) so that the R angles at different bends of the same hairpin are different.

2. The R angle variable device for flat wire stator hairpin according to claim 1, characterized in that: Along the vertical direction of the frame mechanism (100), the R-angle core column servo lifting mechanism (300) is located above the 2D card issuing servo twisting mechanism (200), wherein the R-angle core column (325) is connected to the twisting assembly.

3. The R angle variable device for flat wire stator hairpin according to claim 1, characterized in that: The frame mechanism (100) comprises a horizontal mounting plate (101) and a vertical mounting plate (102) arranged perpendicular to each other, wherein: The torsion assembly is fixedly connected to the horizontal mounting plate (101) via a mounting seat (227); The lifting assembly is fixedly connected to the vertical mounting plate (102) via a connecting plate (313).

4. The R angle variable device for flat wire stator hairpin according to claim 3, characterized in that: The torsion assembly includes a torsion drive motor (228) and a rotating block (222), wherein: The horizontal mounting plate (101) is provided with a through hole for the torsion drive motor (228) to vertically pass through, and the torsion drive motor (228) is fixed to the horizontal mounting plate (101) via the mounting seat (227); a support plate (225) for carrying the flat wire (000) is provided on a side of the mounting seat (227) facing away from the torsion drive motor (228), and the support plate (225) is fixed to the mounting seat (227) via a support column (226); a bearing seat (224) and a transition connection block (223) in contact with each other are further provided between the mounting seat (227) and the support plate (225), wherein the bearing seat (224) is fixedly connected to the mounting seat (227); The rotating block (222) is provided with a circular hole (222a) coaxial with the rotating axis, and the circular hole (222a) fixes the R-angle core column (325).

5. The R angle variable device for flat wire stator hairpin according to claim 1, characterized in that: The rotation limiting block (221) is in a fan-shaped structure. The edges of the rotation limiting block (221) and the limiting fixing block (211) are both provided with limiting grooves for fixing the flat wire (000). When the rotation limiting block (221) is in an initial state, the straight flat wire (000) can pass through the limiting grooves horizontally.

6. The R angle variable device for flat wire stator hairpin according to claim 4, characterized in that: The support plate (225) is provided with a fan-shaped opening for the rotation limiting block (221) to rotate freely.

7. The R angle variable device for flat wire stator hairpin according to claim 1, characterized in that: The R angle of the R angle core column (325) arranged axially is in an eccentric circular structure to adapt to the requirements for the working clearance when the flat wire (000) is bent.

8. The R angle variable device for flat wire stator hairpin according to claim 3, characterized in that: The lifting assembly comprises a lifting motor (311), a lead screw (312) and a nut block (323) in sequence from top to bottom along the vertical direction of the lifting assembly, wherein the lead screw (312) and the lifting motor (311) are coaxially arranged.

9. The R angle variable device for flat wire stator hairpin according to claim 8, characterized in that: The R-angle core column servo lifting mechanism (300) further includes a guide assembly, which includes a vertically arranged base plate (321) and a guide rail slider (322), wherein the guide rail slider (322) can slide up and down along a slide rail axially protruding from the base plate (321); the R-angle core column (325) is respectively connected to the guide rail slider (322) and the nut block (323) through a drive plate (324).

10. The R angle variable device for flat wire stator hairpin according to claim 9, characterized in that: The base plate (321) is fixedly connected to the vertical mounting plate (102) via a height-equalizing rod (314).

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