Welding device and welding process for coil for inductor

Abstract

The coil welding device comprises a workbench, material sheet guide rails and a guide pressing device, a first welding device, a bending device and a second welding device are sequentially arranged on the workbench in the feeding direction at intervals, and the material sheet guide rails are arranged on the two sides of the first welding device and the two sides of the second welding device correspondingly; a strip-shaped material piece capable of bearing a coil is arranged on the material piece guide rail, a pole piece capable of being welded to the coil is arranged on the strip-shaped material piece, the strip-shaped material piece penetrates through the first welding device, the bending device and the second welding device, the pole piece and the coil are welded through the first welding device, and after the pole piece is bent through the bending device, the pole piece is further welded through the second welding device. The guide pressing devices are used for correcting the coil, each guide pressing device comprises a rotatable pressing piece, and the pressing pieces can press the strip-shaped material pieces on the material piece guide rails, deform at the same time and generate traction force opposite in direction on the two sides of the strip-shaped material pieces so as to tension the strip-shaped material pieces.

Description

Technical Field

[0001] The present application relates to the field of welding technology, and in particular to a coil welding device and welding process for inductance. Background Art

[0002] As an important component of new electronic information materials, one-piece molded inductors are the cornerstone of the development of the information technology industry. Traditional inductors are made by winding wires on ferrite core components to form inductor components.

[0003] When manufacturing existing inductor components, it is generally necessary to weld the spirally rolled coil to the pole piece, cut it, put it into the packaging shell of the inductor component, pour in magnetic powder, form it after hot pressing, and finally bend the pole piece to serve as the pin of the inductor component.

[0004] However, in the above-mentioned inductor component manufacturing process, when the inductor component is welded, since subsequent processes such as cutting are involved, after welding, the welding between the coil and the pole piece may become loose due to disturbances in subsequent processes, resulting in cold welding, and ultimately leading to defective inductor components. Summary of the invention

[0005] The present application provides a coil welding device and a welding process for an inductor, which can solve the problem of poor welding caused by disturbances in subsequent processes during welding of the coil inside the existing inductor element.

[0006] The technical solution of the present application is as follows: A coil welding device for inductance, comprising: A workbench, on which a first welding device, a bending device, and a second welding device are sequentially arranged in a feeding direction; A strip-shaped sheet guide rail, the sheet guide rail is respectively arranged on both sides of the first welding device and the second welding device, the sheet guide rail is provided with a strip-shaped sheet capable of carrying a coil, the strip-shaped sheet is provided with a pole piece capable of being welded to the coil, the strip-shaped sheet passes through the first welding device, the bending device and the second welding device, the pole piece and the coil are welded by the first welding device, and after the pole piece is bent by the bending device, it is further welded by the second welding device; A guiding and clamping device, wherein a plurality of the guiding and clamping devices are arranged at intervals on the sheet guide rail and are located on both sides of the first welding device and the second welding device, and are used to adjust the coil. The guiding and clamping device comprises a rotatable clamping member, which can press the strip sheet onto the sheet guide rail, and at the same time deform and generate traction forces in opposite directions on both sides of the strip sheet to tension the strip sheet.

[0007] By adopting the above scheme, when welding the coil, after the preliminary welding of the coil, the pole plate is bent by using a bending device, so that the bent pole piece can be bent and fit the pin of the coil, so that the contact area between the two is wider, and then a secondary welding is performed, thereby improving the stability of the coil welding, and reducing the possibility of loosening at the welding point during subsequent cutting and other processes. During welding or bending, the strip material can be clamped by the clamping member, avoiding disturbance of the pole piece during welding or bending, and can also straighten the coil with a skewed angle, and at the same time tighten the strip material to reduce the possibility of deformation.

[0008] In one embodiment of the present application, the strip-shaped material sheet also includes a material strip, two of the material strips are parallel to each other, and a plurality of the pole pieces are arranged at intervals on the side where the two material strips are close to each other. The pole pieces on the two material strips are arranged opposite to each other one by one and form a hollow area for the coil to pass through, and a bendable bending portion is provided on the pole piece.

[0009] By adopting the above scheme, a bendable bending portion is provided on the pole piece, and when the coil is inserted into the strip-shaped sheet, the bending portion can be bent and can bend around the pin of the coil, thereby increasing the contact area between the pole piece and the pin, so as to improve the stability during subsequent welding.

[0010] In one embodiment of the present application, the bending device comprises: A bending stand, the bending stand is fixedly mounted on the workbench; The bending cylinder is arranged in a vertical direction and fixedly assembled on the bending stand. A bending head is detachably connected to the driving shaft of the bending cylinder, and the bending head is adapted to the pole piece.

[0011] By adopting the above scheme, the bending cylinder is used to drive the bending head matched with the pole piece to press down. During the pressing process, the bending head can bend the bent part of the pole piece around the pin of the coil by 90°, thereby increasing the contact area between the pole piece and the coil, which is convenient for the secondary welding of the coil.

[0012] In one embodiment of the present application, a pickup component is also included, and the pickup component includes: A linear moving module, which is fixedly mounted on the workbench and located on a lower side of the strip-shaped sheet; A lifting cylinder is vertically arranged and assembled on the slider of the linear moving module. A clamping piece is arranged on the driving shaft of the lifting cylinder.

[0013] By adopting the above scheme and utilizing the picking assembly, when the spiral coil needs to be placed on the strip material, the clamping member clamps the coil and, driven by the moving linear module, transports the coil to the bottom of the strip material. At the same time, the lifting cylinder drives the clamping member with the coil to rise, allowing it to pass through the hollow area between two oppositely arranged pole pieces until the bent portion of the pole piece can resist the pin of the coil, and the bent portion is stuck in the gap between the coil and the pin.

[0014] In one embodiment of the present application, the first welding device and the second welding device both include: A welding frame, the welding frame is arranged on the workbench; A welding cylinder is arranged in a vertical direction and fixedly assembled on the welding frame. A welding gun is arranged on a driving shaft of the welding cylinder, and the welding gun is used to weld the pole piece and the pin of the coil together.

[0015] By adopting the above solution, when the coil passes through the first welding device or the second welding device, the welding cylinder can drive the welding gun to move and approach the coil, so as to weld the coil and the bent portion of the pole piece together, thereby improving the welding efficiency.

[0016] In one embodiment of the present application, the guiding and pressing device further comprises: Two groups of guide frame assemblies, each group of the guide frame assemblies includes two guide frames, the two guide frames are arranged above the sheet guide rail, the guide frames are rotatably connected with threaded rods inside, and the threaded rods penetrate the guide frames; A cushion block, which is sleeved on the threaded rod and threadedly connected to the threaded rod, and is located on a side where the pressing members are close to each other; The pressing piece is a disc-shaped component, and two pressing pieces are arranged inside each guide frame. The pressing piece is threadedly connected to the threaded rod, and the pressing piece is located on the side of the guide frame close to each other; An elastic belt, wherein guide rings are respectively arranged at both ends of the elastic belt, and the guide rings are respectively sleeved on the threaded rods inside the two groups of guide frame assemblies and located on the side where the two pads are close to each other, and a feed gap is formed between the two elastic belts, and the width of the feed gap gradually decreases along the feeding direction.

[0017] By adopting the above scheme, the coil is set on the strip material. When the coil moves with the strip material until it is guided into the inside of the clamping assembly, since the width of the feed gap gradually decreases along the feeding direction, some coils that are crooked when placed can automatically return to the right position due to the resistance of the elastic band when passing through the feed gap. By rotating the pad on the threaded rod according to the size of the coil to be produced, the distance between the two pads can be adjusted so that the spacing between the two elastic bands can be adjusted according to the diameter of the coil. In addition, during the movement of the strip material, the clamping member can maintain sufficient downward pressure on the strip material to prevent the strip material from being skewed.

[0018] In one embodiment of the present application, the clamping member is coaxially provided with a rubber gasket along its own circumference, the rubber gasket is provided with an annular groove along its own circumference, and the annular grooves on two adjacent rubber gaskets are inclined in a direction approaching each other.

[0019] By adopting the above scheme, using the rubber gasket arranged along the circumference of the clamping piece, the rubber gasket is deformed at the annular groove when the clamping piece presses against the strip material. Since the annular grooves on two adjacent rubber gaskets are inclined in opposite directions, when the annular grooves are subjected to positive pressure, they bend in opposite directions. The static friction force generated during the bending can stretch and pull the strip material in opposite directions, thereby playing the role of tensioning the strip material and reducing the possibility of the strip material being deformed due to disturbance during operation.

[0020] In one embodiment of the present application, the guiding and pressing device further comprises: A connecting frame assembly, the connecting frame assembly includes two connecting frames, the two connecting frames are respectively fixedly assembled above the sheet guide rails, a plurality of clamping members are spaced apart on one side of the two connecting frames close to each other, the clamping members are cylindrical members, and are rotatably connected to the connecting frames, the plurality of clamping members respectively located on the two connecting frames are arranged side by side to form a feed channel, the width of the feed channel gradually decreases along the feeding direction.

[0021] By adopting the above scheme, by arranging the clamping piece on the side where the two connecting frames are close to each other, the feed channel formed by the arrangement of the clamping pieces on the two connecting frames can also play the function of correcting the deviation of the coil. By customizing the inclination degree of the surface on the side where the connecting frames are close to each other, the inclination degree of the arrangement of the clamping pieces can be set, so that the clamping piece can correct the deviation of the coil while clamping the strip-shaped material.

[0022] In one embodiment of the present application, the clamping member includes a rotating disk, an annular rubber sleeve is fixedly connected to the outer edge of the rotating disk along its circumference, a filling gap is provided between the annular rubber sleeve and the rotating disk, a filling medium is provided inside the filling gap, an arc-shaped cavity is provided inside the annular rubber sleeve, and the arc-shaped cavity is located inside the side of the annular rubber sleeve away from the connecting frame.

[0023] An annular rubber sleeve is provided on the outer edge of the rotating disk, and a filling medium is provided in the filling gap. When the pressing member is pressed on the strip-shaped sheet, the annular rubber sleeve on the pressing member is deformed after being squeezed. Since an arc-shaped cavity is provided inside the side of the annular rubber sleeve close to each other, after the filling medium is squeezed, it will flow to the arc-shaped cavity under the action of squeezing, thereby causing the annular rubber sleeve to be stretched and deformed. Since the stretching can generate lateral static friction and traction on the strip-shaped sheet, it can also achieve the purpose of tensioning the strip-shaped sheet.

[0024] A second object of the present invention is to provide a coil welding process for inductors.

[0025] In order to achieve the above-mentioned purpose, the technical solution of the present application is as follows: A coil welding process for inductance, using an inductance coil welding device to weld the coil, comprising the following steps: Step 1: The pick-up component clamps the coil on the strip sheet, and transports the strip sheet to the first welding device for initial welding as the strip sheet moves, thereby obtaining a primary coil; Step 2: The primary coil is moved into the bending device, and the bending device bends the bent portion on the strip sheet so that the bent portion is bent and fits on the pin of the primary coil to obtain a reinforced coil; Step 3: The reinforcement coil is moved to the inside of the second welding device, and the second welding device performs secondary welding on the bent portion and the pins of the reinforcement coil to obtain a finished coil; Step 4: Cut the finished coils on the strips and discharge them.

[0026] By adopting the above scheme, when welding the coil, the device welds the coil once, then reinforces the coil pin by bending the bent portion of the pole piece, and finally welds it a second time, thereby improving the welding stability between the coil and the pole piece.

[0027] In one embodiment of the present application, In summary, the present application includes at least one of the following beneficial technical effects: By setting up a bending device, a first welding device and a second welding device, when the coil is welded to the pole piece, it is firstly reinforced by preliminary welding by the first welding device, and then the pole piece is bent and wrapped around the pin of the coil by the bending device, and then the second welding device is used for secondary welding to improve the welding stability of the coil.

[0028] By setting up a guiding and clamping device, during the process of coil welding and following the movement of the strip material, the guiding and clamping device gradually becomes narrower along the feeding direction, so that it can correct the skewed coil. At the same time, the guiding and clamping device can use the clamping parts to clamp the two sides of the strip material so that it will not deflect during the movement. At the same time, it can provide traction in opposite directions to tension the strip material so that the strip material will not wrinkle, thereby further ensuring the stability of the coil during welding.

[0029] By arranging the threaded rod to cooperate with the thread of the pad block and arranging the elastic band, the device can adjust the spacing between the two elastic bands according to the size of the coil, and the distance between the two sets of guide frame assemblies can also be customized. The elastic band can be stretched according to the distance between the two sets of guide frame assemblies, thereby extending or shortening the length of the elastic band, and then extending or shortening the length of the feeding gap, so that the device can be flexibly adjusted according to the size of the coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front view of a coil welding device for induction provided in the first embodiment of the present application; Figure 2 This is a front view of a coil welding device for inductance provided in the first embodiment of the present application when a pole piece is clamped with a coil; Figure 3 It is a front view of a first welding device of an inductor coil welding device provided in the first embodiment of the present application; Figure 4 It is a front view of a bending device for an inductor coil welding device provided in the first embodiment of the present application; Figure 5 It is a front view of a guide clamping device and a bending device of a coil welding device for inductance provided in the first embodiment of the present application; Figure 6 It is a front view of a component removal assembly of a coil welding device for inductance provided in the first embodiment of the present application; Figure 7 It is a front view of a guide and clamping device for an inductor coil welding device provided in the first embodiment of the present application; Figure 8 It is a front view of a guide and clamping device for an inductor coil welding device provided in the first embodiment of the present application; Fig. 9It is a front cross-sectional view of a pressing member of a coil welding device for inductance provided in the first embodiment of the present application; Fig.10 It is a front view of a guide and clamping device for an inductor coil welding device provided in the second embodiment of the present application; Fig.11 It is a front cross-sectional view of a clamping member of a coil welding device for inductance provided in the second embodiment of the present application.

[0031] Description of the accompanying drawings: 1. workbench; 2. first welding device; 21. welding frame; 22. welding cylinder; 221. welding gun; 3. second welding device; 4. bending device; 41. bending frame; 42. bending cylinder; 421. bending head; 5. sheet guide; 6. strip sheet; 61. pole piece; 611. bending portion; 62. material strip; 63. hollow area; 7. guide clamping device; 71. clamping member; 711. rubber gasket; 7111. annular groove; 7 2. Guide frame assembly; 721. Guide frame; 722. Threaded rod; 73. Spacer; 74. Elastic band; 741. Guide ring; 742. Feed gap; 75. Connecting frame assembly; 751. Connecting frame; 752. Feed channel; 76. Rotating disk; 761. Annular rubber sleeve; 762. Filling gap; 763. Filling medium; 764. Arc cavity; 8. Pick-up assembly; 81. Linear moving module; 82. Lifting cylinder; 83. Clamping piece; 9. Coil. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-11 The present application provides a coil welding device and a welding process for inductance, which are described in further detail.

[0033] Embodiment 1, a coil welding device for inductance provided in the embodiment of the present application comprises: a workbench 1, a sheet guide rail 5 and a guiding and clamping device 7.

[0034] See also Figure 1 and Figure 2The workbench 1 is provided with a first welding device 2, a bending device 4 and a second welding device 3 in sequence along the feeding direction. The sheet guide rail 5 is strip-shaped and is respectively arranged on both sides of the first welding device 2 and the second welding device 3. The sheet guide rail 5 is provided with a strip sheet 6 that can carry the coil 9. The strip sheet 6 is provided with a pole piece 61 that can be welded with the coil 9. The strip sheet 6 passes through the first welding device 2, the bending device 4 and the second welding device 3. The pole piece 61 and the coil 9 are welded by the first welding device 2, and after the pole piece 61 is bent by the bending device 4, it is further welded by the second welding device 3. The guide pressing device The device 7 is provided with a plurality of guide and clamping devices 7 which are arranged at intervals on the sheet guide rail 5 and are located on both sides of the first welding device 2 and the second welding device 3, and are used to adjust the coil 9. The guide and clamping device 7 includes a rotatable clamping member 71, and the clamping member 71 can press the strip sheet 6 on the sheet guide rail 5, and at the same time deform and generate traction forces in opposite directions on both sides of the strip sheet 6 to tension the strip sheet 6. By arranging the first welding device 2, the bending device 4 and the second welding device 3, the device can be welded on both sides during welding, and the pole piece 61 can be bent by using the bending device 4 between two weldings to improve the welding stability between the pole piece 61 and the coil 9.

[0035] Among them, the strip-shaped material sheet 6 can be tensioned by a discharge tray (not shown in the figure), the discharge tray can be arranged on both sides of the workbench 1 along the feeding direction, and a motor (not shown in the figure) is arranged, and the driving shaft of the motor is connected and fixed to the discharge tray to drive the discharge tray to rotate, so as to realize the movement of the strip-shaped material sheet 6.

[0036] See also Figure 1 and Figure 2 The strip-shaped material piece 6 also includes a material strip 62, and two of the material strips 62 are provided in parallel with each other. The pole pieces 61 are provided in plurality, and the plurality of pole pieces 61 are arranged at intervals on the side where the two material strips 62 are close to each other. The pole pieces 61 on the two material strips 62 are arranged opposite to each other one by one, and form a hollow area 63 for the coil 9 to pass through. A bendable bending portion 611 is provided on the pole piece 61. By arranging the pole piece 61 and the hollow area 63, the coil 9 can pass through the extruded pole piece 61 and be clamped in the hollow area 63, which is convenient for placement and subsequent welding.

[0037] In this embodiment, the pole piece 61 is made of elastic conductive metal, and the width of the hollow area 63 is smaller than the diameter of the coil 9 .

[0038] See also Figure 1 and Figure 4The bending device 4 includes: a bending stand 41 and a bending cylinder 42. The bending stand 41 is fixedly mounted on the workbench 1. The bending cylinder 42 is arranged in a vertical direction and fixedly mounted on the bending stand 41. A bending head 421 is detachably connected to the driving shaft of the bending cylinder 42. The bending head 421 is adapted to the pole piece 61. The bending cylinder 42 can drive the bending head 421 to squeeze the bending part of the pole piece 61, so that it can bend around the pin, so that the coil 9 can further contact with the pin, so as to improve the subsequent welding stability.

[0039] See also Figure 1 and Figure 6 , and also includes a pick-up component 8, which includes: a linear moving module 81 and a lifting cylinder 82, wherein the linear moving module 81 is fixedly assembled on the workbench 1 and is located on the lower side of the strip material 6, the lifting cylinder 82 is vertically arranged and assembled on the slider of the linear moving module 81, and a clamping member 83 is arranged on the driving shaft of the lifting cylinder 82, and the linear moving module 81 is used to drive the lifting cylinder 82 to move, and the clamping member 83 is used to clamp and lift the coil 9 until the coil 9 passes through the hollow area 63 and is clamped in the strip material 6, thereby improving the convenience of loading, wherein the clamping member 83 can be composed of an electric push rod (not shown) and a clamping block (not shown), the driving shaft of the electric push rod is connected and fixed to the clamping block, and by setting two clamping blocks, the coil 9 is clamped under the drive of the electric push rod.

[0040] See also Figure 1 and Figure 3 The first welding device 2 and the second welding device 3 both include: a welding frame 21 and a welding cylinder 22, the welding frame 21 is arranged on the workbench 1, the welding cylinder 22 is arranged in the vertical direction and fixedly assembled on the welding frame 21, and a welding gun 221 is provided on the driving shaft of the welding cylinder 22, and the welding gun 221 is used to weld the pole piece 61 and the pin of the coil 9 together, and convenient welding is achieved by using the electric welding gun 221 of the welding cylinder 22 to approach the welding point between the coil 9 and the pole piece 61.

[0041] See also Figure 5 , Figures 7 to 9The guide and clamping device 7 also includes: two groups of guide frame assemblies 72, cushion blocks 73 and elastic bands 74. Each group of the guide frame assemblies 72 includes two guide frames 721. The two guide frames 721 are both arranged above the sheet guide rail 5. The guide frames 721 are internally rotatably connected with a threaded rod 722, and the threaded rod 722 penetrates the guide frames 721. The cushion blocks 73 are sleeved on the threaded rod 722 and threadedly connected with the threaded rod 722. The cushion blocks 73 are located on the side of the clamping members 71 that are close to each other. The clamping members 71 are disc-shaped components. Two clamping members 71 are arranged inside each of the guide frames 721. The clamping members 71 are threadedly connected to the threaded rod 722. Part 71 is located on the side where the guide frames 721 are close to each other, and guide rings 741 are respectively provided at both ends of the elastic band 74. The guide rings 741 are respectively sleeved on the threaded rods 722 inside the two groups of the guide frame assemblies 72, and are located on the side where the two pads 73 are close to each other. A feeding gap 742 is formed between the two elastic bands 74, and the width of the feeding gap 742 gradually decreases along the feeding direction. By setting the width of the feeding gap 742 to gradually decrease along the feeding direction, the skewed coil 9 can automatically return to the right position due to the resistance of the elastic band 74 when passing through the feeding gap 742. At the same time, by adjusting the distance between the two pads 73, the spacing between the two elastic bands 74 can be adjusted according to the diameter of the coil 9.

[0042] See also Fig. 9 The clamping member 71 is coaxially provided with a rubber gasket 711 along its circumference, and the rubber gasket 711 is provided with an annular groove 7111 along its circumference. The annular grooves 7111 on two adjacent rubber gaskets 711 are inclined in a direction approaching each other. By utilizing the rubber gasket 711 arranged along the circumference of the clamping member 71, when the clamping member 71 presses against the strip material 6, the rubber gasket 711 is deformed and bent at the annular groove 7111, and can stretch and pull the material strip 62 of the strip material 6 in opposite directions, thereby playing the role of tensioning the strip material 6, reducing the possibility of deformation of the strip material 6 due to disturbance during operation.

[0043] Embodiment 2, Embodiment 2 has the same basic structure as Embodiment 1, except that, please refer to 10 and Fig.11The guide and clamping device 7 also includes: a connecting frame assembly 75, the connecting frame assembly 75 includes two connecting frames 751, the two connecting frames 751 are respectively fixedly assembled above the sheet guide rail 5, and a plurality of clamping members 71 are arranged at intervals on one side of the two connecting frames 751 close to each other. The clamping members 71 are cylindrical members and are rotatably connected to the connecting frames 751. The plurality of clamping members 71 respectively located on the two connecting frames 751 are arranged side by side to form a feeding channel 752, and the width of the feeding channel 752 gradually decreases along the feeding direction. By arranging the clamping members 71 arranged on the same connecting frame 751, a feeding channel 752 formed by two rows of clamping members 71 is formed to correct the deviation of the coil 9.

[0044] See also Fig.11 The clamping member 71 includes a rotating disk 76, and an annular rubber sleeve 761 is fixedly connected to the outer edge of the rotating disk 76 along its own circumference. A filling gap 762 is provided between the annular rubber sleeve 761 and the rotating disk 76, and a filling medium 763 is provided inside the filling gap 762. An arc-shaped cavity 764 is provided inside the annular rubber sleeve 761, and the arc-shaped cavity 764 is located inside the side of the annular rubber sleeve 761 away from the connecting frame 751. By arranging the annular rubber sleeve 761 on the outer edge of the rotating disk 76 and arranging the filling medium 763 in the filling gap 762, after the filling medium 763 is squeezed, it will flow to the arc-shaped cavity 764 under the action of squeezing, so that the annular rubber sleeve 761 is stretched and deformed. Due to the stretching, lateral static friction and traction can be generated on the strip material 6 to tension the strip material 6.

[0045] The second object of the present invention is to provide a coil welding process for inductance, using an inductance coil welding device to weld the coil 9, comprising the following steps: Step 1: The pick-up assembly 8 clamps the coil 9 onto the strip sheet 6, and transports the strip sheet 6 to the first welding device 2 for initial welding to obtain a primary coil. Step 2: The primary coil is moved into the bending device 4, and the bending device 4 bends the bending portion 611 on the strip sheet 6 so that the bending portion 611 is bent and fits on the pin of the primary coil to obtain a reinforced coil; Step 3: The reinforcement coil is moved into the second welding device 3, and the second welding device 3 performs secondary welding on the bent portion 611 and the pin of the reinforcement coil to obtain a finished coil; Step 4: Cut the finished coil on the strip sheet 6 and discharge it.

[0046] To sum up, when the coil 9 needs to be welded, the picking component 8 first picks up the coil 9 and transfers it to the bottom of the strip sheet 6. The lifting cylinder 82 drives the coil 9 to rise and is stuck in the hollow area 63 of the strip sheet. When the coil 9 passes through the first welding device 2, the pin of the coil 9 can be welded to the bent part of the pole piece 61 once. After the first welding, the bent part of the pole piece 61 is bent with the pin as the axis under the action of the bending device 4. After the bending and reinforcement, the coil 9 passes through the second welding device 3 and is further welded for the second time to complete the welding.

[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coil welding device for inductance, characterized in that: include: A workbench (1), wherein a first welding device (2), a bending device (4) and a second welding device (3) are sequentially arranged on the workbench (1) along a feeding direction; A strip-shaped sheet guide rail (5), the sheet guide rail (5) being arranged on both sides of the first welding device (2) and the second welding device (3), the sheet guide rail (5) being provided with a strip-shaped sheet (6) capable of carrying a coil, the strip-shaped sheet (6) being provided with a pole piece (61) capable of being welded to the coil, the strip-shaped sheet (6) passing through the first welding device (2), the bending device (4) and the second welding device (3), the pole piece (61) and the coil being welded by the first welding device (2), and after the pole piece (61) is bent by the bending device (4), they are further welded by the second welding device (3); A guide clamping device (7), wherein a plurality of the guide clamping devices (7) are provided, wherein the plurality of guide clamping devices (7) are arranged at intervals on the sheet guide rail (5) and are located on both sides of the first welding device (2) and the second welding device (3), and are used for adjusting the coil. The guide clamping device (7) comprises a rotatable clamping member (71), wherein the clamping member (71) can clamp the strip sheet (6) on the sheet guide rail (5), and at the same time deform and generate traction forces in opposite directions on both sides of the strip sheet (6) to tension the strip sheet (6).

2. The inductor coil welding device according to claim 1, characterized in that: The strip-shaped material sheet (6) further comprises a material strip (62), wherein two of the material strips (62) are provided in parallel with each other, and a plurality of the pole pieces (61) are provided, wherein the plurality of pole pieces (61) are arranged at intervals on a side where the two material strips (62) are close to each other, and the pole pieces (61) on the two material strips (62) are arranged opposite to each other one by one and form a hollow area (63) through which the coil can pass, and a bendable bending portion (611) is provided on the pole piece (61).

3. The induction coil welding device according to claim 1, characterized in that: The bending device (4) comprises: A bending stand (41), wherein the bending stand (41) is fixedly mounted on the workbench (1); A bending cylinder (42), the bending cylinder (42) is arranged in a vertical direction and fixedly assembled on the bending stand (41), and a bending head (421) is detachably connected to the driving shaft of the bending cylinder (42), and the bending head (421) is adapted to the pole piece (61).

4. The induction coil welding device according to claim 1, characterized in that: It also includes a pickup assembly (8), which includes: A linear moving module (81), the linear moving module (81) is fixedly mounted on the workbench (1) and is located below one side of the strip-shaped sheet (6); A lifting cylinder (82) is vertically arranged and assembled on the slider of the linear moving module (81), and a clamping member (83) is arranged on the driving shaft of the lifting cylinder (82).

5. The inductor coil welding device according to claim 1, characterized in that: The first welding device (2) and the second welding device (3) both comprise: A welding frame (21), wherein the welding frame (21) is arranged on the workbench (1); A welding cylinder (22) is arranged in a vertical direction and fixedly mounted on the welding frame (21); a welding gun (221) is arranged on a driving shaft of the welding cylinder (22); and the welding gun (221) is used to weld the pole piece (61) and the pin of the coil together.

6. The inductor coil welding device according to claim 1, characterized in that: The guiding and pressing device (7) further comprises: Two groups of guide frame assemblies (72), each group of the guide frame assemblies (72) includes two guide frames (721), the two guide frames (721) are both arranged above the sheet guide rail (5), the guide frames (721) are internally rotatably connected with threaded rods (722), and the threaded rods (722) penetrate the guide frames (721); a cushion block (73), the cushion block (73) being sleeved on the threaded rod (722) and being threadedly connected to the threaded rod (722), the cushion block (73) being located on a side where the pressing member (71) is close to each other; The pressing piece (71) is a disc-shaped component. Two pressing pieces (71) are arranged inside each guide frame (721). The pressing piece (71) is threadedly connected to the threaded rod (722). The pressing piece (71) is located on a side of the guide frame (721) close to each other. An elastic band (74), wherein guide rings (741) are respectively arranged at both ends of the elastic band (74), and the guide rings (741) are respectively sleeved on the threaded rods (722) inside the two groups of guide frame assemblies (72), and are located on the side where the two cushion blocks (73) are close to each other, and a feeding gap (742) is formed between the two elastic bands (74), and the width of the feeding gap (742) gradually decreases along the feeding direction.

7. The inductor coil welding device according to claim 6, characterized in that: The clamping member (71) is coaxially provided with a rubber gasket (711) along its own circumference. The rubber gasket (711) is provided with an annular groove (7111) along its own circumference. The annular grooves (7111) on two adjacent rubber gaskets (711) are inclined in a direction approaching each other.

8. The induction coil welding device according to claim 1, characterized in that: The guiding and pressing device (7) further comprises: A connecting frame assembly (75), wherein the connecting frame assembly (75) comprises two connecting frames (751), wherein the two connecting frames (751) are respectively fixedly mounted above the sheet guide rail (5), and a plurality of clamping members (71) are arranged at intervals on one side of the two connecting frames (751) close to each other, wherein the clamping members (71) are cylindrical members and are rotatably connected to the connecting frames (751), and the plurality of clamping members (71) respectively located on the two connecting frames (751) are arranged side by side to form a feeding channel (752), wherein the width of the feeding channel (752) gradually decreases along the feeding direction.

9. The inductor coil welding device according to claim 8, characterized in that: The pressing member (71) comprises a rotating disk (76), an annular rubber sleeve (761) is fixedly connected to the outer edge of the rotating disk (76) along its own circumference, a filling gap (762) is provided between the annular rubber sleeve (761) and the rotating disk (76), a filling medium (763) is provided inside the filling gap (762), an arc-shaped cavity (764) is provided inside the annular rubber sleeve (761), and the arc-shaped cavity (764) is located inside a side of the annular rubber sleeve (761) away from the connecting frame (751).

10. A coil welding process for inductance, characterized in that: Using an inductor coil welding device as described in any one of claims 1 to 9 to weld a coil comprises the following steps: Step 1: The pick-up assembly (8) clamps the coil onto the strip material (6), and transports the strip material (6) to the first welding device (2) for initial welding as the strip material (6) moves, thereby obtaining a primary coil; Step 2: The primary coil is moved into the bending device (4), and the bending device (4) bends the bending portion (611) on the strip material (6) so that the bending portion (611) is bent and fits on the pin of the primary coil, thereby obtaining a reinforced coil; Step 3: The reinforcement coil is moved to the inside of the second welding device (3), and the second welding device (3) performs secondary welding on the bent portion (611) and the pin of the reinforcement coil to obtain a finished coil; Step 4: Cut the finished coil on the strip sheet (6) and discharge it.

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