A wire winding jig for bending the end wire of a coil

Abstract

The present invention relates to the technical field of coil winding, and particularly relates to a winding jig for bending the starting wire of a coil. The winding jig for bending the starting wire of a coil includes a lower die mechanism, an upper die mechanism, and a bending mechanism. The lower die mechanism includes a lower jig base, a central axis column, and a lower die driving shaft. The upper die mechanism includes an upper jig base and a wire groove. The extending direction of the wire groove extends from the outer side wall of the upper jig base to the end surface of the upper jig base facing the lower die mechanism. The starting wire of the coil is pre-hidden in the wire groove to avoid the starting wire affecting the winding during winding, and at the same time, the starting wire can be directly moved out of the wire groove for bending when bending the starting wire. The bending mechanism includes a moving block, a wire blocking column, a push rod, and a third spring. The push rod is lifted to drive the moving block and the wire blocking column arranged at one end of the moving block to rise. When bending the starting wire and the tail wire, the starting wire and the tail wire are bent with the wire blocking column protruding from the lower jig base as the bending point.

Description

Technical Field

[0001] The present invention relates to the technical field of coil winding, and particularly relates to a winding jig for bending the starting and ending wires of a coil. Background Art

[0002] A coil generally refers to a circular wire winding, which is an important component in electrical equipment such as motors, electrical appliances, inductors, transformers, etc., and plays roles such as converting electrical energy, storing magnetic field energy, regulating current and voltage. The manufacturing process of a coil usually requires selecting a suitable wire material such as copper wire or enameled wire, and then winding the wire on a winding jig to form the required coil shape.

[0003] However, some special products have requirements for the positions of the starting and ending wires of the coil, and it is necessary to bend the starting and ending wires of the coil by 90 degrees and ensure they are parallel after bending during the winding stage, so that no further bending is required during installation, which is convenient for installation. However, most of the existing winding jigs in the prior art can only achieve winding, and it is difficult to achieve the bending of the starting and ending wires, resulting in additional working steps and affecting the efficiency in the subsequent process. Summary of the Invention

[0004] In view of this, the present invention provides a winding jig for bending the starting and ending wires of a coil to solve the above technical problems.

[0005] A wire winding jig for bending the starting and ending wires of a coil. The wire winding jig for bending the starting and ending wires of a coil is used to bend the starting wire and the ending wire of a wire. The wire winding jig for bending the starting and ending wires of a coil includes a lower die mechanism, an upper die mechanism disposed opposite to the lower die mechanism, and two bending mechanisms disposed on the lower die mechanism. The lower die mechanism includes a lower jig base, a central axis column movably disposed on the lower jig base, and a lower die drive shaft inserted into the center of the central axis column. The upper die mechanism includes an upper jig base and a wire groove disposed on the upper jig base. The extending direction of the wire groove extends from the outer side wall of the upper jig base to the end face of the upper jig base facing the lower die mechanism. The extending direction of the wire groove is tangent to the central axis column, and the wire groove communicates with the outer side wall of the upper jig base. The bending mechanism includes a moving block movably disposed on the lower jig base, a wire blocking post disposed on the moving block, a push rod disposed on the moving block, and a third spring disposed between the moving block and the lower jig base. An installation groove for accommodating the moving block is provided in the lower jig base. The moving block includes a cross bar and a vertical bar disposed in the middle section of the cross bar. The wire blocking post is located at one end of the cross bar close to the upper die mechanism. One end of the wire blocking post is connected to the cross bar, and the other end movably extends out of the end face of the lower jig base facing the upper die mechanism. One end of the third spring abuts against the vertical bar, and the other end abuts against the lower jig base. The push rod is lifted to drive the moving block and the wire blocking post disposed at one end of the moving block to rise, so that the wire blocking post extends out of the lower jig base.

[0006] Further, the lower die mechanism further includes two positioning wire clamps disposed on the lower jig base. The positioning wire clamp includes a mounting seat disposed on the side wall of the lower jig base, a clamping block rotatably disposed on the mounting seat, and a first spring disposed between the clamping block and the mounting seat.

[0007] Further, the interior of the mounting seat is hollow. The clamping block has an L-shaped structure. The middle position of the clamping block is rotatably connected to the side wall of the mounting seat through a rotating member. Both ends of the clamping block extend out of the mounting seat. One end of the clamping block is provided with the first spring. The other end of the clamping block is used to fit and clamp the wire with the mounting seat. One end of the first spring abuts against and is fixedly connected to the mounting seat, and the other end abuts against and is fixedly connected to one end of the clamping block.

[0008] Further, the upper die mechanism further includes a wire lifter clip disposed on the upper fixture base. The wire lifter clip includes a mounting block disposed on the upper fixture base, a moving shaft movably disposed on the mounting block, a clamping plate disposed on the moving shaft, a limiting portion disposed at one end of the moving shaft, and a second spring disposed between the limiting portion and the mounting block. The clamping plate is disposed at one end of the moving shaft, and the limiting portion is disposed at the other end. The diameter of the limiting portion is greater than that of the moving shaft. One end of the second spring abuts against the limiting portion, and the other end abuts against the mounting block.

[0009] Further, the bending mechanism further includes a pulley disposed on the push rod. One end of the push rod is connected to the vertical rod, and the pulley is disposed at the other end.

[0010] Further, the moving block has a T-shaped structure. The cross bar is inserted into the installation groove, the cross bar slides along the installation groove, and the vertical rod extends out of the installation groove.

[0011] Further, the extending direction of the installation groove is parallel to the central axis of the lower fixture base, and the installation groove communicates with the outer side wall of the lower fixture base.

[0012] Compared with the prior art, in the winding jig for bending the starting end wire of the coil provided by the present invention, the extending direction of the wire groove extends from the outer side wall of the upper fixture base to the end face of the upper fixture base facing the lower die mechanism, and the extending direction of the wire groove is tangent to the axis column, so as to pre-hide the starting wire of the coil in the wire groove, avoid the starting wire affecting the winding of the coil during winding, and at the same time enable the starting wire to be directly moved out of the wire groove for bending when bending the starting wire. The moving block of the bending mechanism has a T-shaped structure and includes a cross bar and a vertical rod disposed in the middle of the cross bar. The wire blocking column is located at one end of the cross bar close to the upper die mechanism. One end of the wire blocking column is connected to the cross bar, and the other end movably extends out of the end face of the lower fixture base facing the upper die mechanism, so that when the moving block moves vertically, the wire blocking column can be driven to move, driving the wire blocking column to extend out of or retract into the lower fixture base. When bending the starting wire and the tail wire, the starting wire and the tail wire are bent with the wire blocking column extending out of the lower fixture base as the bending point. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a winding jig for bending the starting end wire and the tail wire of a coil provided by the present invention.

[0014] Figure 2 is Figure 1 exploded structural diagram of the winding jig for bending the starting end wire and the tail wire of the coil.

[0015] Figure 3 For Figure 2 The cross-sectional view of the lower die mechanism and the bending mechanism of the wire winding jig for the tail wire of the bent coil.

[0016] Figure 4 For Figure 1 The structural schematic diagram of the wire clamping clip of the wire winding jig for the tail wire of the bent coil.

[0017] Figure 5 For Figure 1 The structural schematic diagram of the positioning wire clip of the wire winding jig for the tail wire of the bent coil.

[0018] Figure 6 For Figure 1 The structural schematic diagram of the bending mechanism of the wire winding jig for the tail wire of the bent coil.

[0019] Figure 7 For Figure 1 The structural schematic diagram of the wire winding jig for the tail wire of the bent coil when the coil is wound.

[0020] Figure 8 For Figure 1 The structural schematic diagram of the wire winding jig for the tail wire of the bent coil when the tail wire is bent.

[0021] Figure 9 For Figure 1 The structural schematic diagram of the wire winding jig for the tail wire of the bent coil when the starting wire is bent. Detailed implementation manners

[0022] The following further elaborates on specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0023] As Figures 1 to 9 shown, it is the structural schematic diagram of the wire winding jig for the tail wire of the bent coil provided by the present invention. The wire winding jig for the tail wire of the bent coil includes a lower die mechanism 10, an upper die mechanism 20 disposed opposite to the lower die mechanism 10, and two bending mechanisms 30 disposed on the lower die mechanism 10. It can be conceived that the wire winding jig for the tail wire of the bent coil further includes some other functional modules, such as connection components, sensors, and mounting components, etc., which are well-known technologies to those skilled in the art and will not be elaborated herein.

[0024] The lower die mechanism 10 includes a lower jig base 11, a central axis column 12 movably disposed on the lower jig base 11, a lower die drive shaft 13 inserted into the center of the central axis column 12, and two positioning wire clips 14 disposed on the lower jig base 11.

[0025] The lower jig base 11 is connected to an external rotary drive device and can drive the lower die mechanism 10 to rotate under its drive for wire winding movement.

[0026] The central axis column 12 is used as the axis for wire winding. During wire winding, the central axis column 12 extends out of the lower jig base 11 under the drive of the lower die drive shaft 13 as the axis for wire winding, so that the wire can be wound around the side wall of the central axis column 12 to form a coil. After the wire winding is completed, the central axis column 12 descends and is flush with the lower jig base 11 again, thereby squeezing off the coil wound around the side wall of the central axis column 12 to achieve blanking.

[0027] One end of the lower die drive shaft 13 is inserted into the center of the central axis column 12, and the other end is connected to an external vertical movement device, so as to drive the lower die drive shaft 13 to move axially up and down through this external vertical movement device, and further control the central axis column 12 to extend out of or retract into the end face of the lower jig base 11. The lower die drive shaft 13 and the central axis column 12 rotate together with the lower jig base 11.

[0028] The positions of the two positioning wire clamps 14 correspond to the positions of the two bending mechanisms 30. The positioning wire clamps 14 are used to clamp the starting wire or the end wire after bending, so as to fix the bent wire and ensure that the position of the wire remains fixed during the subsequent heating and forming process. The positioning wire clamp 14 includes a mounting seat 141 arranged on the side wall of the lower jig base 11, a clamping block 142 rotatably arranged on the mounting seat 141, and a first spring 143 arranged between the clamping block 142 and the mounting seat 141.

[0029] The mounting base 141 is arranged on the lower jig base 11 through fasteners. The interior of the mounting base 141 is hollow, thereby providing a space for arranging the clamping block 142 and a space required for the rotation of the clamping block 142. The clamping block 142 is in an L-shaped structure. The middle position of the clamping block 142 is rotationally connected to the side wall of the mounting base 141 through a rotating member such as an inserted rotating shaft. Both ends of the clamping block 142 extend out of the mounting base 141. One end of the clamping block 142 is provided with the first spring 143, and the other end of the clamping block 142 is used to fit with the mounting base 141 to clamp the wire. One end of the first spring 143 abuts against and is fixedly connected to the mounting base 141, and the other end abuts against and is fixedly connected to one end of the clamping block 142. Thus, the first spring 143 pushes one end of the clamping block 142 through its own elastic force, so that the clamping block 142 has a tendency to rotate with its own center as the rotation point, so that the other end of the clamping block 142 closely adheres to the mounting base 141 to clamp the wire. When it is necessary to loosen the positioning wire clamp 14, one end of the clamping block 142 provided with the first spring 143 is lifted by an external moving device, so that the first spring 143 is compressed and the clamping block 142 rotates with its own center as the rotation point, so that the wire-clamping end of the clamping block 142 moves away from the mounting base 141 to loosen the wire.

[0030] As Figure 2 shown, the upper die mechanism 20 includes an upper jig base 21, a wire groove 22 arranged on the upper jig base 21, and a wire lifting clamp 23 arranged on the upper jig base 21.

[0031] The upper jig base 21 and the lower jig base 11 are coaxially arranged. The upper jig base 21 is connected to an external rotating device and driven by the external rotating device to drive the upper die mechanism 20 to rotate for winding movement. When winding, the central axis column 12 extends out of the lower jig base 11, and the end face of the upper jig base 21 is in contact with the central axis column 12, so that a gap is provided between the upper jig base 21 and the lower jig base 11, so that the wire is wound on the outer side wall of the central axis column 12.

[0032] The wire groove 22 is used to accommodate the starting wire of the coil. The extending direction of the wire groove 22 extends from the outer side wall of the upper jig base 21 to the end face of the upper jig base 21 facing the lower die mechanism 10. The extending direction of the wire groove 22 is tangent to the central axis column 12, so as to ensure that the position during wire inlet is at the axial column 12, and at the same time ensure that the starting wire of the coil is pre-hidden in the wire groove 22 during winding, without affecting the winding of the coil. The wire groove 22 is communicated with the outer side wall of the upper jig base 21 to facilitate the wire to enter the wire groove 22.

[0033] As Figure 4As shown, the wire starting clamp 23 includes a mounting block 231 disposed on the upper jig base 21, a moving shaft 232 movably disposed on the mounting block 231, a clamping plate 233 disposed at one end of the moving shaft 232, a limiting portion 234 disposed at the other end of the moving shaft 232, and a second spring 235 disposed between the limiting portion 234 and the mounting block 231. One end of the moving shaft 232 is provided with the clamping plate 233, and the other end is provided with the limiting portion 234. The diameter of the limiting portion 234 is greater than the diameter of the moving shaft 232. One end of the second spring 235 abuts against the limiting portion 234, and the other end abuts against the mounting block 231. The second spring 235 pushes the limiting portion 234 to move away from the mounting block 231 by its own elastic force, thereby driving the moving shaft 232 and the clamping plate 233 to move, so that the clamping plate 233 abuts closely against the mounting block 231 to clamp the wire between the clamping plate 233 and the mounting block 231. When it is necessary to loosen the starting wire, an external device will push the moving shaft 232, thereby compressing the second spring 235 and moving the clamping plate 233 away from the mounting block 231 to loosen the wire.

[0034] Please refer to Figure 6 , the two bending mechanisms 30 are respectively used for bending the starting wire and the tail wire, but the two bending mechanisms 30 have the same structure. Here, only one of the two bending mechanisms 30 will be described. The bending mechanism 30 includes a moving block 31 movably disposed on the lower jig base 11, a wire blocking post 32 disposed on the moving block 31, a push rod 33 disposed on the moving block 31, a third spring 34 disposed between the moving block 3 and the lower jig base 11, and a pulley 35 disposed on the push rod 33.

[0035] An installation groove 111 for accommodating the moving block 31 is provided in the lower jig base 11. The extending direction of the installation groove 111 is parallel to the central axis of the lower jig base 11, and the installation groove 111 communicates with the outer side wall of the lower jig base 11.

[0036] The moving block 31 has a T-shaped structure and includes a cross bar 311, and a vertical bar 312 disposed in the middle section of the cross bar 311. The cross bar 311 is inserted into the mounting groove 111, and the cross bar 311 can slide along the mounting groove 111. The vertical bar 312 extends out of the mounting groove 111 to facilitate the arrangement of the third spring 34 and the push rod 33. The wire blocking post 32 is located at one end of the cross bar 311 close to the upper die mechanism 20. One end of the wire blocking post 32 is connected to the cross bar 311, and the other end movably extends out of the end face of the lower fixture base 11 facing the upper die mechanism 20. Thus, when the moving block 31 moves vertically, it can drive the wire blocking post 32 to move, and further make the wire blocking post 32 extend out of or retract into the lower fixture base 11. One end of the push rod 33 is connected to the vertical bar 312, and the other end is provided with the pulley 35. One end of the third spring 34 abuts against the vertical bar 312, and the other end abuts against the lower fixture base 11. The third spring 34 pushes the moving block 31 to move away from the lower fixture base 11 by its own elastic force, thereby driving the wire blocking post 32 to move and retract it into the lower fixture base 11. Further, in the free state, the wire blocking post 32 is located within the lower fixture base 11 and does not affect normal wire winding. When it is necessary for the wire blocking post 32 to extend out of the lower fixture base 11, the push rod 33 is pushed to lift by an external moving device, thereby driving the moving block 31 and the wire blocking post 32 provided at one end of the moving block to rise, so that the wire blocking post 32 extends out of the lower fixture base 11.

[0037] During wire winding, the wire is first pulled out from an external wire storage cylinder and clamped by the wire starting clip 23. Since the wire starting clip 23 is located in the extending direction of the wire groove 22 and the wire groove 22 communicates with the outer side wall of the upper fixture base 21, the wire is located in the wire groove 22 while being clamped by the wire starting clip 23. Then the central axis column 12 extends out of the lower fixture base 11 and the upper die mechanism 20 and the lower die mechanism 10 are closed, so that the upper fixture base 21 and the lower fixture base 11 are arranged at intervals and have a distance of one wire diameter. Then the upper die mechanism 20 and the lower die mechanism 10 rotate synchronously and the upper fixture base 21 and the lower fixture base 11 gradually move away from each other, so that the wire is wound around the outer side wall of the central axis column 12 to complete the winding of the coil, as Figure 7 shown. When bending the tail wire, one of the bending mechanisms 30 extends out under the control of an external device. Then the upper die mechanism 20 and the lower die mechanism 10 rotate in the opposite direction, and the wire is bent with the extending bending mechanism 30 as the bending point. At the same time, the positioning wire clip 14 clamps the bent tail wire. Finally, the external wire cutting mechanism cuts off the tail wire to complete the bending of the tail wire, as Figure 8As shown in the figure. When bending the starting wire, the external moving wire clamp clamps the starting wire clamped by the starting wire clamp 23, and the starting wire clamp 23 releases the starting wire. Another bending mechanism 30 extends under the control of an external device. Then, the external moving wire clamp drives the starting wire to bend with the bending mechanism 30 as the bending point. At the same time, the positioning wire clamp 14 clamps the bent starting wire to complete the bending of the starting wire, as Figure 9 shown. After the bending of the starting wire and the tail wire is completed, the coil is heated and fixed by an external heating device, so that the insulating layer of the enameled wire is softened and better bonded after cooling, thereby achieving the purpose of fixation.

[0038] Compared with the prior art, the extending direction of the wire groove 22 of the wire winding jig for bending the starting and tail wires of the coil provided by the present invention extends from the outer side wall of the upper jig base 21 to the end surface of the upper jig base 21 facing the lower die mechanism 10. The extending direction of the wire groove 22 is tangent to the axis column 12, so as to pre-store the starting wire of the coil in the wire groove 22, avoiding the influence of the starting wire on the winding of the coil during winding. At the same time, when bending the starting wire, the starting wire can be directly moved out of the wire groove 22 for bending. The moving block 31 of the bending mechanism 30 has a T-shaped structure and includes a cross bar 311 and a vertical bar 312 provided in the middle section of the cross bar 311. The wire blocking column 32 is located at one end of the cross bar 311 close to the upper die mechanism 20. One end of the wire blocking column 32 is connected to the cross bar 311, and the other end extends out of the end surface of the lower jig base 11 facing the upper die mechanism 20 in a movable manner. Thus, when the moving block 31 moves vertically, it can drive the wire blocking column 32 to move, driving the wire blocking column 32 to extend out of or retract into the lower jig base 11. When bending the starting wire and the tail wire, the starting wire and the tail wire are bent with the wire blocking column 32 extending out of the lower jig base 11 as the bending point.

[0039] The above is only the preferred embodiment of the present invention and is not used to limit the protection scope of the present invention. Any modification, equivalent replacement or improvement within the spirit of the present invention is covered within the scope of the claims of the present invention.

Claims

1. A wire winding jig for bending the starting and ending wires of a coil. The wire winding jig for bending the starting and ending wires of a coil is used to bend the starting wire and the ending wire of a wire, and is characterized in that: The winding jig for the tail wire of the bent coil includes a lower die mechanism, an upper die mechanism disposed opposite to the lower die mechanism, and two bending mechanisms disposed on the lower die mechanism. The lower die mechanism includes a lower jig base, a central axis column movably disposed on the lower jig base, and a lower die drive shaft inserted into the center of the central axis column. The upper die mechanism includes an upper jig base and a wire groove disposed on the upper jig base. The extending direction of the wire groove extends from the outer side wall of the upper jig base to the end face of the upper jig base facing the lower die mechanism. The extending direction of the wire groove is tangent to the central axis column. The wire groove communicates with the outer side wall of the upper jig base. The bending mechanism includes a moving block movably disposed on the lower jig base, a wire blocking column disposed on the moving block, a push rod disposed on the moving block, and a third spring disposed between the moving block and the lower jig base. An installation groove for accommodating the moving block is provided in the lower jig base. The moving block includes a cross bar and a vertical bar disposed in the middle section of the cross bar. The wire blocking column is located at one end of the cross bar close to the upper die mechanism. One end of the wire blocking column is connected to the cross bar, and the other end movably extends out of the end face of the lower jig base facing the upper die mechanism. One end of the third spring abuts against the vertical bar, and the other end abuts against the lower jig base. The push rod is lifted to drive the moving block and the wire blocking column disposed at one end of the moving block to rise, so that the wire blocking column extends out of the lower jig base.

2. The wire winding jig for bending the end wire of the coil according to claim 1, characterized in that: The lower die mechanism further includes two positioning wire clamps disposed on the lower jig base. The positioning wire clamp includes a mounting base disposed on the side wall of the lower jig base, a clamping block rotatably disposed on the mounting base, and a first spring disposed between the clamping block and the mounting base.

3. The wire winding jig for bending the end wire of the coil according to claim 2, characterized in that: The interior of the mounting base is hollowly provided. The clamping block has an L-shaped structure. The middle position of the clamping block is rotatably connected to the side wall of the mounting base through a rotating member. Both ends of the clamping block extend out of the mounting base. One end of the clamping block is provided with the first spring. The other end of the clamping block is used to fit and clamp the wire with the mounting base. One end of the first spring abuts against and is fixedly connected to the mounting base, and the other end abuts against and is fixedly connected to one end of the clamping block.

4. The wire winding jig for bending the end wire of the coil as claimed in claim 1, wherein: The upper die mechanism further includes a wire starting clamp disposed on the upper jig base. The wire starting clamp includes a mounting block disposed on the upper jig base, a moving shaft movably disposed on the mounting block, a clamping plate disposed on the moving shaft, a limiting portion disposed at one end of the moving shaft, and a second spring disposed between the limiting portion and the mounting block. One end of the moving shaft is provided with the clamping plate, and the other end is provided with the limiting portion. The diameter of the limiting portion is larger than the diameter of the moving shaft. One end of the second spring abuts against the limiting portion, and the other end abuts against the mounting block.

5. The wire winding jig for bending the end wire of the coil as described in claim 1, characterized in that: The bending mechanism further includes a pulley disposed on the push rod. One end of the push rod is connected to the vertical bar, and the other end is provided with the pulley.

6. The wire winding jig for bending the end wire of the coil according to claim 1, characterized in that: The moving block has a T-shaped structure. The cross bar is inserted into the installation groove, the cross bar slides along the installation groove, and the vertical bar extends out of the installation groove.

7. The wire winding jig for bending the end wire of the coil according to claim 1, wherein: The extending direction of the installation groove is parallel to the central axis of the lower jig base, and the installation groove communicates with the outer side wall of the lower jig base.

Images