Winding jig for bending starting line and tail line of coil

Abstract

The invention relates to the technical field of coil winding, in particular to a winding jig for bending a starting line and a tail line of a coil. The winding jig for bending the starting line and the tail line of the coil comprises a lower die mechanism, an upper die mechanism and a bending mechanism. The lower die mechanism comprises a lower jig seat, an axis column and a lower die driving shaft. The upper die mechanism comprises an upper jig seat 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 face, facing the lower die mechanism, of the upper jig base. The starting wire of the coil is pre-hidden in the wire slot, so that the winding is prevented from being influenced by the starting wire during winding, and meanwhile, the starting wire can be directly moved out of the wire slot to be bent when the starting wire is bent. The bending mechanism comprises a moving block, a wire blocking column, a push rod and a third spring. The push rod is lifted up to drive the moving block and the wire blocking column arranged at the moving end to ascend, and when a starting wire and a tail wire are bent, the starting wire and the tail wire are bent with the wire blocking column extending out of the lower jig seat as a bending point.

Description

Technical Field

[0001] The invention relates to the technical field of coil winding, and in particular to a winding fixture for bending a tail wire of a coil. Background Art

[0002] Coil usually refers to a ring-shaped wire winding, which is an important component in electrical equipment such as motors, electrical appliances, inductors, transformers, etc., and plays a role in converting electrical energy, storing magnetic field energy, regulating current and voltage, etc. The coil manufacturing process usually requires the selection of suitable wire materials 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 position of the starting and tail wires of the coil. It is necessary to bend the starting and tail wires of the coil 90 degrees during the winding stage and ensure that they are parallel after bending. In this way, it is not necessary to bend them again during installation, which is convenient for installation. However, most of the winding jigs in the prior art can only realize winding, but it is difficult to realize the bending of the starting and tail wires, which requires additional work steps in the subsequent process, affecting efficiency. Summary of the invention

[0004] In view of this, the present invention provides a winding fixture for bending the tail wire of a coil to solve the above technical problems.

[0005] A winding jig for bending the tail wire of a coil, the winding jig for bending the tail wire of a coil is used for bending the starting wire and tail wire of a conductor, and the winding jig for bending the tail wire of a coil comprises a lower die mechanism, an upper die mechanism arranged opposite to the lower die mechanism, and two bending mechanisms arranged on the lower die mechanism. The lower die mechanism comprises a lower jig seat, an axial column movably arranged on the lower jig seat, and a lower die driving shaft inserted in the center of the axial column. The upper die mechanism comprises an upper jig seat, and a wire groove arranged on the upper jig seat. The extension direction of the wire groove extends from the outer side wall of the upper jig seat to the end surface of the upper jig seat facing the lower die mechanism, the extension direction of the wire groove is tangent to the axial column, and the wire groove is connected to the outer side wall of the upper jig seat. The bending mechanism comprises a moving block movably arranged on the lower jig seat, a wire blocking column arranged on the moving block, a push rod arranged on the moving block, and a third spring arranged between the moving block and the lower jig seat. The lower fixture seat is provided with a mounting groove for accommodating the moving block, the moving block includes a cross bar and a vertical bar arranged 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 mold mechanism, one end of the wire blocking column is connected to the cross bar, and the other end is movably extended out of the end surface of the lower fixture seat facing the upper mold mechanism, one end of the third spring abuts against the vertical bar, and the other end abuts against the lower fixture seat, and the push rod is lifted to drive the moving block and the wire blocking column arranged at the moving end to rise, so that the wire blocking column extends out of the lower fixture seat.

[0006] Furthermore, the lower mold mechanism also includes two positioning wire clamps arranged on the lower fixture seat, and the positioning wire clamp includes a mounting seat arranged on the side wall of the lower fixture seat, a clamping block rotatably arranged on the mounting seat, and a first spring arranged between the clamping block and the mounting seat.

[0007] Furthermore, the interior of the mounting seat is hollow, the clamping block is L-shaped, 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, and the other end of the clamping block is used to fit with the mounting seat to clamp the wire, one end of the first spring abuts against the mounting seat and is fixedly connected, and the other end abuts against one end of the clamping block and is fixedly connected.

[0008] Furthermore, the upper mold mechanism also includes a wire lifting clamp arranged on the upper fixture seat, the wire lifting clamp includes a mounting block arranged on the upper fixture seat, a movable shaft movably arranged on the mounting block, a clamping plate arranged on the movable shaft, a limiting portion arranged at one end of the movable shaft, and a second spring arranged between the limiting portion and the mounting block, the clamping plate is arranged at one end of the movable shaft, and the limiting portion is arranged at the other end, the diameter of the limiting portion is larger than the diameter of the movable shaft, one end of the second spring abuts against the limiting portion, and the other end abuts against the mounting block.

[0009] Furthermore, the bending mechanism also includes a pulley arranged on the push rod, one end of the push rod is connected to the vertical rod, and the other end is provided with the pulley.

[0010] Furthermore, the moving block is in a T-shaped structure, the cross bar is inserted into the installation slot, the cross bar slides along the installation slot, and the vertical bar extends out of the installation slot.

[0011] Furthermore, an extension direction of the mounting groove is parallel to a central axis of the lower fixture seat, and the mounting groove is communicated with an outer side wall of the lower fixture seat.

[0012] Compared with the prior art, the wire groove of the winding jig for bending the tail wire of the coil provided by the present invention extends from the outer wall of the upper jig seat to the end surface of the upper jig seat facing the lower mold mechanism, and the extension direction of the wire groove is tangent to the axis column, so that the starting wire of the coil is pre-hidden in the wire groove to avoid the starting wire affecting the winding of the coil 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 moving block of the bending mechanism is in a T-shaped structure and includes a cross bar and a vertical bar arranged 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 mold mechanism, one end of the wire blocking column is connected to the cross bar, and the other end movably extends out of the end surface of the lower jig seat facing the upper mold mechanism, so that when the moving block moves vertically, it can drive the wire blocking column to move, and drive the wire blocking column to extend or retract the lower jig seat. When the starting line and the tail line are bent, the starting line and the tail line are bent with the line blocking column extending out of the lower fixture seat as a bending point. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic structural diagram of a winding fixture for bending a coil tail wire provided by the present invention.

[0014] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the winding fixture for bending the tail wire of the coil.

[0015] Figure 3 for Figure 2 A cross-sectional view of the lower mold mechanism and the bending mechanism of the winding fixture for the bent coil tail wire.

[0016] Figure 4 for Figure 1 A schematic structural diagram of the wire starting clamp of the winding fixture for the tail wire of the bent coil.

[0017] Figure 5 for Figure 1 A schematic structural diagram of a positioning wire clamp of a winding fixture for the tail wire of the bent coil.

[0018] Figure 6 for Figure 1 A schematic structural diagram of the bending mechanism of the winding fixture for bending the tail wire of the coil.

[0019] Figure 7 for Figure 1 A schematic diagram of the structure of the winding fixture of the bent coil tail wire when the coil is wound.

[0020] Figure 8 for Figure 1 A schematic diagram of the structure of the winding fixture for bending the tail wire of the bent coil when bending the tail wire.

[0021] Fig. 9 for Figure 1 A schematic diagram of the structure of the winding fixture for bending the tail wire of the bent coil when bending the starting wire. DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention are further described in detail below. 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] like Figures 1 to 9 As shown, it is a schematic diagram of the structure of the winding jig for the tail wire of the bent coil provided by the present invention. The winding jig for the tail wire of the bent coil includes a lower mold mechanism 10, an upper mold mechanism 20 arranged opposite to the lower mold mechanism 10, and two bending mechanisms 30 arranged on the lower mold mechanism 10. It can be imagined that the winding jig for the tail wire of the bent coil also includes some other functional modules, such as connection components, sensors, and installation components, etc., which are well known to those skilled in the art and will not be repeated here.

[0024] The lower mold mechanism 10 includes a lower fixture seat 11 , an axial column 12 movably arranged on the lower fixture seat 11 , a lower mold driving shaft 13 inserted in the center of the axial column 12 , and two positioning wire clamps 14 arranged on the lower fixture seat 11 .

[0025] The lower fixture seat 11 is connected to an external rotary drive device and driven by the external rotary drive device to drive the lower mold mechanism 10 to rotate so as to perform winding motion.

[0026] The shaft column 12 is used as the axis of the winding. When winding, the shaft column 12 is driven by the lower die drive shaft 13 to extend out of the lower fixture seat 11 as the axis of the winding, so that the wire can be wound on the side wall of the shaft column 12 to form a coil. After the winding is completed, the shaft column 12 is lowered to be flush with the lower fixture seat 11 again, so as to squeeze the coil wound on the side wall of the shaft column 12 to achieve material unloading.

[0027] One end of the lower die drive shaft 13 is inserted in the center of the shaft column 12, and the other end is connected to an external vertical moving device, so that the lower die drive shaft 13 is driven by the external vertical moving device to move axially up and down, thereby controlling the shaft column 12 to extend or retract to the end surface of the lower fixture seat 11. The lower die drive shaft 13 and the shaft column 12 rotate together with the lower fixture seat 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 tail wire after bending, thereby fixing the bent wire and ensuring that the wire position remains fixed during the subsequent heating and forming process. The positioning wire clamp 14 includes a mounting seat 141 disposed on the side wall of the lower fixture seat 11, a clamping block 142 rotatably disposed on the mounting seat 141, and a first spring 143 disposed between the clamping block 142 and the mounting seat 141.

[0029] The mounting seat 141 is arranged on the lower fixture seat 11 by fasteners, and the mounting seat 141 is hollow inside, so as to provide space for arranging the clamping block 142 and the space required for the clamping block 142 to rotate. The clamping block 142 is L-shaped, and the middle position of the clamping block 142 is rotatably connected to the side wall of the mounting seat 141 by a rotating member such as an inserted rotating shaft. Both ends of the clamping block 142 extend out of the mounting seat 141, and 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 seat 141 to clamp the wire. One end of the first spring 143 abuts against the mounting seat 141 and is fixedly connected, and the other end abuts against one end of the clamping block 142 and is fixedly connected, so that 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 is close to the mounting seat 141 to clamp the wire. When it is necessary to loosen the positioning wire clamp 14, the end of the clamping block 142 provided with the first spring 143 is lifted up by an external moving device, so that the first spring 143 is compressed and the clamping block 142 is rotated with its own center as the rotation point, so that the end of the clamping block 142 that clamps the wire is away from the mounting seat 141 to loosen the wire.

[0030] like Figure 2 As shown, the upper mold mechanism 20 includes an upper fixture seat 21 , a wire groove 22 disposed on the upper fixture seat 21 , and a wire clamp 23 disposed on the upper fixture seat 21 .

[0031] The upper fixture seat 21 is coaxially arranged with the lower fixture seat 11, and the upper fixture seat 21 is connected to an external rotating device and drives the upper mold mechanism 20 to rotate under the drive of the external rotating device to perform winding movement. When winding, the shaft column 12 extends out of the lower fixture seat 11, and the upper fixture seat 21 fits with the end surface of the shaft column 12, so that the upper fixture seat 21 and the lower fixture seat 11 are spaced apart, so that the wire is wound on the outer wall of the shaft column 12.

[0032] The wire groove 22 is used to accommodate the starting wire of the coil. The extension direction of the wire groove 22 extends from the outer wall of the upper fixture seat 21 to the end surface of the upper fixture seat 21 facing the lower mold mechanism 10. The extension direction of the wire groove 22 is tangent to the axial column 12, so as to ensure that the position of the wire when entering 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, which will not affect the winding of the coil. The wire groove 22 is connected to the outer wall of the upper fixture seat 21 to facilitate the wire to enter the wire groove 22. like Figure 4As shown, the thread-lifting clamp 23 includes a mounting block 231 disposed on the upper fixture seat 21, a movable shaft 232 movably disposed on the mounting block 231, a clamping plate 233 disposed at one end of the movable shaft 232, a limiting portion 234 disposed at the other end of the movable shaft 232, and a second spring 235 disposed between the limiting portion 234 and the mounting block 231. The clamping plate 233 is disposed at one end of the movable shaft 232, and the limiting portion 234 is disposed at the other end. The diameter of the limiting portion 234 is larger than the diameter of the movable 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 is close to the first clamping plate 231, so as to clamp the wire between the clamping plate 233 and the first clamping plate 231. When the starting wire needs to be released, the external device pushes the moving shaft 233, thereby compressing the second spring 235 and moving the base plate 233 away from the mounting block 231, so as to release the wire.

[0033] Please combine Figure 6 The two bending mechanisms 30 are used to bend the starting wire and the tail wire respectively, but the two bending mechanisms 30 have the same structure, and only one of the two bending mechanisms 30 is described here. The bending mechanism 30 includes a moving block 31 movably arranged on the lower fixture seat 11, a wire blocking column 32 arranged on the moving block 31, a push rod 33 arranged on the moving block 31, a third spring 34 arranged between the moving block 31 and the lower fixture seat 11, and a pulley 35 arranged on the push rod 33.

[0034] The lower fixture seat 11 is provided with a mounting groove 111 for accommodating the moving block 31 . The extending direction of the mounting groove 111 is parallel to the central axis of the lower fixture seat 11 . The mounting groove 111 is communicated with the outer side wall of the lower fixture seat 11 .

[0035] The moving block 31 is in a T-shaped structure and includes a cross bar 311 and a vertical bar 312 arranged 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 installation of the third spring 34 and the push rod 33. The wire blocking column 32 is located at one end of the cross bar 311 close to the upper mold mechanism 20, one end of the wire blocking column 32 is connected to the cross bar 311, and the other end is movably extended from the end surface of the lower fixture seat 11 facing the upper mold mechanism 10, so that when the moving block 31 moves vertically, it can drive the wire blocking column 32 to move, thereby making the wire blocking column 32 extend or retract into the lower fixture seat 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 rod 312, and the other end abuts against the lower fixture seat 11. The elastic force of the third spring 34 pushes the moving block 31 to move away from the lower fixture seat 11, thereby driving the wire blocking column 32 to move and retract it into the lower fixture seat 11, and then the wire blocking column 32 is located in the lower fixture seat 11 in a free state, which will not affect the normal winding. When the wire blocking column 32 needs to extend out of the lower fixture seat 11, the push rod 33 is pushed up by an external moving device, thereby driving the moving block 31 and the wire blocking column 32 arranged at one end of the moving block to rise, so that the wire blocking column 32 extends out of the lower fixture seat 11.

[0036] When winding the wire, the wire is first pulled out from the external wire storage tube and clamped by the wire clamp 23. Since the wire clamp 23 is located in the extension direction of the wire groove 22 and the wire groove 22 is connected to the outer wall of the upper jig seat 21, the wire is clamped by the wire clamp 23 and is also located in the wire groove 22. Then the shaft column 12 extends out of the lower jig seat 11 and the upper mold mechanism 20 and the lower mold mechanism 10 are closed, so that the upper jig seat 21 and the lower jig seat 11 are spaced apart and have a wire diameter distance. Then the upper mold mechanism 20 and the lower mold mechanism 10 rotate synchronously and the upper jig seat 21 and the lower jig seat 11 gradually move away from each other, so that the wire is wound on the outer wall of the shaft column 12, completing the winding of the coil, as shown in FIG. Figure 7 When bending the tail wire, one of the bending mechanisms 30 is extended under the control of an external device, and then the upper mold mechanism 20 and the lower mold mechanism 10 rotate in opposite directions so that the wire is bent with the extended bending mechanism 30 as the bending point, and at the same time, the positioning wire clamp 14 clamps the bent tail wire, and finally the external wire cutting mechanism cuts the tail wire to complete the bending of the tail wire, as shown in FIG. Figure 8When bending the starting line, the external movable wire clamp clamps the starting line clamped by the wire clamp 23, and the wire clamp 23 releases the starting line, and the other bending mechanism 30 is extended under the control of the external device, and then the external movable wire clamp drives the starting line to bend with the bending mechanism 30 as the bending point, and at the same time, the positioning wire clamp 14 clamps the bent starting line to complete the bending of the starting line, as shown in FIG. Fig. 9 After the starting and tail wires are bent, the coils are heated and fixed by an external heating device, so that the insulation layer of the enameled wire softens and adheres better after cooling, thereby achieving the purpose of fixation.

[0037] Compared with the prior art, the wire groove 22 of the winding jig for bending the tail wire of the coil provided by the present invention extends from the outer wall of the upper jig seat 21 to the end surface of the upper jig seat 21 facing the lower mold mechanism 10, and the extension direction of the wire groove 22 is tangent to the shaft column 12, so that the starting wire of the coil is pre-hidden in the wire groove 22 to avoid the starting wire affecting the winding of the coil during winding, and 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 is a T-shaped structure and includes a crossbar 311 and a vertical bar 312 arranged in the middle section of the crossbar 311. The wire blocking column 32 is located at one end of the cross bar 311 close to the upper mold mechanism 20. One end of the wire blocking column 32 is connected to the cross bar 311, and the other end is movably extended from the end surface of the lower fixture seat 11 facing the upper mold mechanism 10, so that when the moving block 31 moves vertically, it can drive the wire blocking column 32 to move, and drive the wire blocking column 32 to extend or retract into the lower fixture seat 11. When bending the starting line and the tail line, the starting line and the tail line are bent with the wire blocking column 32 extending from the lower fixture seat 11 as the bending point.

[0038] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention is included in the scope of the claims of the present invention.

Claims

1. A winding jig for bending the tail wire of a coil, the winding jig for bending the tail wire of a coil is used to bend the starting wire and the tail wire of a conductor, characterized in that: The winding jig of the tail wire of the bent coil includes a lower mold mechanism, an upper mold mechanism arranged opposite to the lower mold mechanism, and two bending mechanisms arranged on the lower mold mechanism. The lower mold mechanism includes a lower jig seat, an axial column movably arranged on the lower jig seat, and a lower mold driving shaft inserted in the center of the axial column. The upper mold mechanism includes an upper jig seat and a wire groove arranged on the upper jig seat. The extension direction of the wire groove extends from the outer side wall of the upper jig seat to the end surface of the upper jig seat facing the lower mold mechanism. The extension direction of the wire groove is tangent to the axial column. The wire groove is connected to the outer side wall of the upper jig seat. The bending mechanism includes a movable The cam is provided with a third spring which is arranged between the moving block and the lower fixture seat, the lower fixture seat is provided with a mounting groove for accommodating the moving block, the moving block comprises a cross bar and a vertical bar arranged 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 mold mechanism, one end of the wire blocking column is connected to the cross bar, and the other end is movably extended out of the end surface of the lower fixture seat facing the upper mold mechanism, one end of the third spring abuts against the vertical bar, and the other end abuts against the lower fixture seat, and the push rod is lifted to drive the moving block and the wire blocking column arranged at the moving end to rise, so that the wire blocking column extends out of the lower fixture seat.

2. The winding jig for bending the tail wire of the coil as claimed in claim 1, characterized in that: The lower mold mechanism also includes two positioning wire clamps arranged on the lower fixture seat, and the positioning wire clamp includes a mounting seat arranged on the side wall of the lower fixture seat, a clamping block rotatably arranged on the mounting seat, and a first spring arranged between the clamping block and the mounting seat.

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

4. The winding jig for bending the tail wire of the coil as claimed in claim 1, characterized in that: The upper mold mechanism also includes a wire lifting clamp arranged on the upper fixture seat, and the wire lifting clamp includes a mounting block arranged on the upper fixture seat, a movable shaft movably arranged on the mounting block, a clamping plate arranged on the movable shaft, a limiting portion arranged at one end of the movable shaft, and a second spring arranged between the limiting portion and the mounting block, the clamping plate is arranged at one end of the movable shaft, and the limiting portion is arranged at the other end, the diameter of the limiting portion is larger than the diameter of the movable shaft, and one end of the second spring abuts against the limiting portion, and the other end abuts against the mounting block.

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

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

7. The winding jig for bending the tail wire of the coil as claimed in claim 1, characterized in that: The extending direction of the mounting groove is parallel to the central axis of the lower fixture seat, and the mounting groove is communicated with the outer side wall of the lower fixture seat.

Images