DC motor flat copper wire bending and forming device

Abstract

The present invention relates to the field of copper wire bending technology, specifically a DC motor flat copper wire bending and forming device, comprising a base, and also comprising a rotating shaft connected to the front end of the base; a bending portion, wherein the bending portion comprises two sets of symmetrically arranged drive components, the drive component comprising a power arm rotatably connected to the rotating shaft, the other end of the power arm being connected to a support block, the support block being provided with a limiting hole corresponding to the free end of the flat copper wire; the power arm being driven to rotate around the rotating shaft to complete the bending of the flat copper wire. The present invention adopts a rotary bending method to bend the flat copper wire, so that the bent flat copper wire has a higher matching degree, and an extrusion plate can be used to drive the two sets of power arms to rotate simultaneously and in opposite directions, and at the same time bend the two free ends of the flat copper wire, thereby improving the overall uniformity of the copper wire, and the distance between the two sets of limiting holes or the two sets of horizontal plates can be adjusted on the same horizontal plane, so as to be applied to different types of flat copper wires, thereby improving the applicability of the device.

Description

Technical Field

[0001] The invention relates to the technical field of copper wire bending, in particular to a device for bending and forming flat copper wires of a DC motor. Background Art

[0002] The DC motor flat copper wire bending and forming device is used to bend a flat hairpin-shaped flat copper wire into a spatial hairpin-shaped flat copper wire.

[0003] For example, the application number is 201910801645.8, and the name is "A flat copper wire bending and forming device". According to the shape forming conditions of the bend transition section in the spatial hairpin-shaped flat copper wire, the movement amount of each actuator is set to control the travel displacement of each pressing head in the pressing mold, so that the pressing heads can cooperate with each other to press out a spatial hairpin-shaped flat copper wire with a bend transition section. The present invention realizes the mechanized production of spatial hairpin-shaped flat copper wire, reduces manual participation, and can improve product quality and production efficiency.

[0004] However, for the rotor flat copper wire of the DC motor, the bending trajectory of the spatial hairpin flat copper wire is an arc trajectory. The existing bending devices mostly use two opposite motion straight trajectories to achieve this. The bent spatial hairpin flat copper wire has a low matching degree and still requires manual secondary processing. Summary of the Invention

[0005] The present invention addresses the problems in the prior art and provides a device for bending and forming flat copper wires for DC motors. The specific technical solutions are as follows:

[0006] A DC motor flat copper wire bending and forming device includes a base and:

[0007] a rotating shaft connected to the front end of the base;

[0008] The bending portion includes two sets of symmetrically arranged drive assemblies, each of which includes a power arm rotatably connected to a rotating shaft, the other end of each power arm being connected to a support block, and the support block is provided with a limiting hole corresponding to the free end of the flat copper wire;

[0009] The power arm is driven to rotate around the rotation axis to complete the bending of the flat copper wire.

[0010] As a further technical solution of the present invention, it also includes a limiting part, which includes two groups of horizontal plates arranged at intervals above the base, and each group of the horizontal plates is symmetrically provided with two groups of "L"-shaped limiting plates along the length direction, and the "L"-shaped limiting plates cooperate with the horizontal plates to form notches, and the opening directions of the notches connected on the two groups of the horizontal plates are opposite to form two groups of limiting channels corresponding to the limiting holes in the thickness direction of the base.

[0011] As a further technical solution of the present invention, the power arm is connected to the rotating shaft through a torsion spring.

[0012] As a further technical solution of the present invention, the "L"-shaped limiting plate is slidably connected to the transverse plate, and the transverse plate can be driven to slide along the length direction of the transverse plate.

[0013] As a further technical solution of the present invention, among the two groups of horizontal plates, one group of horizontal plates is arranged in contact with the rotating shaft, and the other group of horizontal plates is slidably connected to the base.

[0014] As a further technical solution of the present invention, the other end of the power arm is connected to a horizontally arranged base, a screw is rotatably connected to the base, and the screw is threadedly connected to the support block.

[0015] As a further technical solution of the present invention, it also includes a horizontally arranged extrusion plate, wherein both ends of the extrusion plate are respectively in contact with the two sets of power arms;

[0016] The extrusion plate is driven to move in a vertical direction, and can drive the two groups of power arms to rotate simultaneously and in opposite directions.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) The flat copper wire is bent by a rotational bending method, so that the bent flat copper wire has a higher matching degree.

[0019] (2) The use of an extrusion plate can drive two sets of power arms to rotate simultaneously and in opposite directions, and at the same time bend the two free ends of the flat copper wire to improve the overall uniformity of the copper wire.

[0020] (3) The distance between two sets of limit holes or two sets of horizontal plates can be adjusted on the same horizontal plane, so as to be applied to different types of flat copper wires and improve the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shows the overall structural diagram of the DC motor flat copper wire bending and forming device;

[0022] Figure 2 shows a schematic structural diagram of the restriction portion;

[0023] Figure 3 A schematic structural diagram of the bending portion is shown.

[0024] Description of the drawings: 100, base; 110, extended edge; 120, slide; 200, cross plate; 210, slide groove; 220, "L"-shaped limit plate; 230, notch; 300, rotating shaft; 400, drive assembly; 410, power arm; 420, base; 430, screw rod; 440, support block; 450, limit hole; 510, hydraulic push rod; 520, extrusion plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0026] The DC motor flat copper wire bending and forming device is used to bend a flat hairpin-shaped flat copper wire into a spatial hairpin-shaped flat copper wire.

[0027] However, due to the rotor flat copper wire of the DC motor, the bending trajectory of the spatial hairpin flat copper wire is an arc trajectory. The existing bending devices are mostly implemented by two oppositely moving straight trajectories. The bent spatial hairpin flat copper wire has a low matching degree and still requires manual secondary processing.

[0028] In order to solve the above technical problems, the present application provides a DC motor flat copper wire bending and forming device. Figure 1 Shows the overall structural diagram of the DC motor flat copper wire bending and forming device; Figure 1 In the figure, the DC motor flat copper wire bending and forming device includes a base 100, two sets of horizontal plates 200 are installed on the base 100, a rotating shaft 300 is installed in front of the base 100, and two sets of driving components 400 are symmetrically arranged on the rotating shaft 300; the two sets of horizontal plates 200 fix the flat copper wire, and the free end of the copper wire is connected to the driving component 400. By driving the two sets of driving components 400 to rotate around the rotating shaft 300, the flat hairpin-shaped flat copper wire can be bent into a spatial hairpin-shaped flat copper wire, and the overall operation is simple.

[0029] Figure 2 shows a schematic structural diagram of the restriction portion; Figure 2 In the embodiment, the limiting part includes two groups of transverse plates 200 arranged at intervals above the base 100, and a slideway 120 is provided above the base 100 along the thickness direction, wherein one group of transverse plates 200 is arranged in contact with the rotating shaft 300, and the other group of transverse plates 200 is slidably connected to the base 100 through the slideway 120, and the upper surfaces of the two groups of transverse plates 200 are provided with a slide groove 210 arranged along the length direction, and each group of slide grooves 210 are slidably connected with two groups of "L"-shaped limiting plates 220, and the two groups of "L"-shaped limiting plates 220 are symmetrically arranged, and the "L"-shaped limiting plates 220 cooperate with the transverse plates 200 to form a notch 230, and the opening directions of the notches 230 connected on the two groups of transverse plates 200 are opposite to form two groups of limiting channels in the thickness direction of the base 100.

[0030] During use, the distance between the two groups of "L"-shaped limit plates 220 and the distance between the two groups of cross plates 200 are adjusted according to the different specifications of the copper wires. The "L"-shaped limit plates 220 are driven to slide along the track of the slide groove 210 to adjust the distance between the two groups of "L"-shaped limit plates 220. A group of cross plates 200 slidingly connected to the base 100 is driven to adjust the distance between the two groups of cross plates 200 according to the length of the copper wire. After the adjustment is completed, the two free ends of the copper wire are passed through the two limiting channels to form a limit for the copper wire.

[0031] It should be noted that bolts can be used to fix the adjusted horizontal plate 200 and the "L"-shaped limit plate 220 (not shown in the figure), or a damping connection can be used to ensure the stability of the horizontal plate 200 and the "L"-shaped limit plate 220 after adjustment. The above-mentioned fixing methods are all existing technologies and will not be elaborated on here.

[0032] Figure 3 shows a schematic structural diagram of the bending portion; Figure 3 In the figure, the bending part includes two groups of symmetrically arranged driving components 400, and the driving component 400 includes a power arm 410 rotatably connected to the rotating shaft 300 through a torsion spring. The other end of the power arm 410 is connected to a horizontally arranged base 420, and a screw rod 430 is rotatably connected to the base 420. The screw rod 430 is externally threadedly connected to a support block 440, and a limiting hole 450 corresponding to the limiting channel is opened on the support block 440.

[0033] The free end of the copper wire that passes through the limiting channel is continued to pass through the limiting hole 450, and the power arm 410 is driven to rotate around the rotating shaft 300 to complete the bending of the free end of the copper wire, thereby bending the flat hairpin-shaped flat copper wire into a spatial hairpin-shaped flat copper wire; at the same time, the screw rod 430 is driven to rotate to make the support block 440 translate along the horizontal trajectory, and the position of the support block 440 is adjusted to make it correspond to the limiting channel, so that it is suitable for different types of copper wires; at the same time, the torsion spring is connected between the rotating shaft 300 and the power arm 410, and can be passively reset when the power arm 410 is not under force, ensuring that the base 420 remains in a horizontal state.

[0034] Reference Figure 1 and Figure 3 The front end of the base 100 has an extended edge 110, and a vertically arranged hydraulic push rod 510 is installed on the extended edge 110. The output end of the hydraulic push rod 510 is connected to an extrusion plate 520, and the two ends of the extrusion plate 520 are respectively in contact with the two sets of power arms 410.

[0035] During use, the hydraulic push rod 510 is started, and the output end of the hydraulic push rod 510 can drive the extrusion plate 520 to move up and down, thereby driving the two sets of symmetrically arranged power arms 410 to rotate synchronously and in opposite directions, completing the synchronous bending of the free ends of the two copper wires, and improving the uniformity of the copper wires after bending.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. A DC motor flat copper wire bending and forming device, comprising a base (100), characterized in that: Also includes: a rotating shaft (300) connected to the front end of the base (100); A bending portion, the bending portion comprising two sets of symmetrically arranged drive assemblies (400), the drive assembly (400) comprising a power arm (410) rotatably connected to the rotating shaft (300), the other end of the power arm (410) being connected to a support block (440), the support block (440) being provided with a limiting hole (450) corresponding to the free end of the flat copper wire; The power arm (410) is driven to rotate around the rotation axis (300) to complete the bending of the flat copper wire; The invention also includes a limiting portion, wherein the limiting portion includes two groups of transverse plates (200) spaced apart and arranged above the base (100), each group of the transverse plates (200) is symmetrically provided with two groups of "L"-shaped limiting plates (220) along the length direction, the "L"-shaped limiting plates (220) cooperate with the transverse plates (200) to form a notch (230), and the opening directions of the notches (230) connected on the two groups of transverse plates (200) are opposite to each other, so as to form limiting channels corresponding to the limiting holes (450) in the thickness direction of the two groups of bases (100); The power arm (410) is connected to the rotating shaft (300) via a torsion spring; The "L"-shaped limiting plate (220) is slidably connected to the transverse plate (200), and the transverse plate (200) is driven to slide along the length direction of the transverse plate (200); Of the two groups of transverse plates (200), one group of transverse plates (200) is arranged in contact with the rotating shaft (300), and the other group of transverse plates (200) is slidably connected to the base (100); The other end of the power arm (410) is connected to a horizontally arranged base (420), a screw rod (430) is rotatably connected to the base (420), and the screw rod (430) is threadedly connected to the support block (440); It also includes a horizontally arranged extrusion plate (520), with both ends of the extrusion plate (520) respectively abutting against the two sets of power arms (410); The extrusion plate (520) is driven to move in a vertical direction, and can drive the two sets of power arms (410) to rotate simultaneously and in opposite directions.

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