Coil welding positioning method and apparatus

Abstract

The present application relates to the technical field of inductance filtering, and discloses a coil welding positioning method and device. The method comprises the following steps: placing each long copper sheet in a pre-assembly position; inserting a plurality of first tapered teeth into the middle part between each two adjacent long copper sheets; inserting a plurality of second tapered teeth between adjacent long copper sheets, so that an inner end part is inserted between each two adjacent second tapered teeth; inserting a plurality of third tapered teeth between adjacent long copper sheets, so that an outer end part is inserted between each two adjacent third tapered teeth; pushing the long copper sheet by using a positioning push block; making all the first tapered teeth disengage from the long copper sheet; clamping all the long copper sheets between the positioning push block and a workbench, so that the long copper sheet moves from the pre-assembly position to a welding position. The method uses three different tapered teeth to achieve accurate positioning of the long copper sheet and improve the welding efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inductance filtering, in particular to a coil welding positioning method and device. BACKGROUND

[0002] The common mode inductor is also called common mode choke, which is an important part of filter, transformer and other devices, and is often used in switching power supply to filter common mode electromagnetic interference signals. The inductance coil needs to be welded by multiple thin sheets, and reliable welding connection needs to be performed in the production process. Ordinary factories usually use soldering or resistance welding, and according to different welding varieties, the tooling needs to be continuously adjusted and accurately positioned. Therefore, there is a high requirement for the accuracy of the positioning device of the inductance coil.

[0003] As shown in Figures 1 to 3 The common mode inductor 900 includes an insulating core shell 910 provided with a ring-shaped accommodating cavity, a magnetic core accommodated in the ring-shaped accommodating cavity, and at least one copper strip winding unit arranged outside the insulating core shell 910. The copper strip winding unit is composed of a U-shaped copper sheet 920 and a long copper sheet 930. The long copper sheet 930 includes an inner end portion 931, a bridging portion 932 and an outer end portion 933 connected in sequence. The bridging portion 932 is arranged at an angle with the inner end portion 931 and the outer end portion 933. The length directions of the inner end portion 931 and the outer end portion 933 are the same. The inner end portion 931 is used for welding with the inner end of the U-shaped copper sheet 920, and the outer end portion 933 is used for welding with the outer end of the U-shaped copper sheet 920.

[0004] However, when welding the U-shaped copper sheet 920 and the long copper sheet 930, the long copper sheet 930 needs to be tightly attached to the U-shaped copper sheet 920 without gaps. If there is a gap, it will affect the welding effect. Considering that the conventional common mode inductor 900 cannot position the U-shaped copper sheet 920 and the long copper sheet 930 itself, external positioning of the U-shaped copper sheet 920 and the long copper sheet 930 is needed.

[0005] Before welding, the position of the long copper sheet 930 will randomly deviate, resulting in a smaller gap between adjacent long copper sheets 930, making it difficult to achieve the positioning purpose.

[0006] To solve the above technical problems, the common assembly method in the prior art is to pre-set a carrier cavity, and position the welding position of the long copper sheet 930 and the welding position of the U-shaped copper sheet 920 in the cavity. This method takes into account the incoming tolerance of the U-shaped copper sheet 920 and the long copper sheet 930 and is convenient for assembly. However, the above method cannot guarantee the close contact of the U-shaped copper sheet 920 and the long copper sheet 930. Moreover, due to the existence of the cavity, the placement efficiency of the long copper sheet 930 is also affected. SUMMARY

[0007] The present application aims to provide a coil welding positioning method and device to ensure accurate positioning of the long copper sheet and improve welding efficiency.

[0008] To achieve the above object, the present application adopts the following technical solutions:

[0009] The coil welding positioning method is used for welding and positioning a plurality of long copper sheets, both ends of the long copper sheet are an inner end and an outer end, and the method comprises the following steps:

[0010] S12: Each long copper sheet is placed in a pre-assembly position, and the pre-assembly position is the same as and one-to-one corresponding to the number of long copper sheets;

[0011] S20: A plurality of first tapered teeth are inserted between the middle parts of each two adjacent long copper sheets;

[0012] S30: A plurality of second tapered teeth are inserted between the adjacent long copper sheets, and one inner end is inserted between each two adjacent second tapered teeth, wherein a plurality of second tapered teeth are arranged on a workbench;

[0013] S40: A plurality of third tapered teeth are inserted between the adjacent long copper sheets, and one outer end is inserted between each two adjacent third tapered teeth, wherein the third tapered teeth are arranged on a positioning push block;

[0014] S50: The long copper sheet is pushed by the positioning push block;

[0015] S60: All the first tapered teeth are separated from the long copper sheet;

[0016] S70: All the long copper sheets are clamped between the positioning push block and the workbench, so that the long copper sheet moves from the pre-assembly position to the welding position.

[0017] As a preferred technical solution of the coil welding positioning method, the following steps are further included before S12:

[0018] S10: Each long copper sheet is placed in a placement position, and the placement position is the same as and one-to-one corresponding to the number of long copper sheets;

[0019] S11: The long copper sheet is pushed by a pre-push push block, and all the long copper sheets are clamped between the pre-push push block and the workbench, so that the long copper sheet moves from the placement position to the pre-assembly position.

[0020] As a preferred technical solution of the coil welding positioning method, the inner end and the outer end extend along a first direction, the positioning push block pushes the long copper sheet along the first direction, and the pre-push push block pushes the long copper sheet along the first direction, wherein the first direction is in a horizontal plane.

[0021] As a preferred technical scheme of the coil welding positioning method, a plurality of the pre-assembly positions are arranged at intervals along a second direction, a plurality of the first tapered teeth are arranged at intervals along the second direction, a plurality of the third tapered teeth are arranged at intervals along the second direction, and a plurality of the second tapered teeth are arranged at intervals along the second direction, wherein the second direction is in a horizontal plane.

[0022] The coil welding positioning device is suitable for the coil welding positioning method described above, and comprises a platform base, a workbench and a positioning push block, the long copper sheet can move relative to the platform base in a horizontal plane, the positioning push block is movably installed on the platform base, the workbench can move relative to the platform base along a third direction, and the first tapered tooth is movably arranged on the workbench and can move relative to the workbench along the third direction, wherein the third direction is perpendicular to the horizontal plane.

[0023] As a preferred technical scheme of the coil welding positioning device, the first tapered tooth is arranged on a movable frame, the movable frame is elastically connected to the workbench through a first elastic member, a driving shaft is arranged on the movable frame, the driving shaft can move relative to the workbench along the third direction, the first elastic member is used to drive the movable frame to move away from the workbench, and the movable frame is stopped when the movable frame and the driving shaft are in contact.

[0024] As a preferred technical scheme of the coil welding positioning device, a driving wheel is rotatably connected to the driving shaft, a sliding block is movably installed on the workbench, the sliding block can move relative to the workbench in the horizontal plane, the sliding block is provided with a wedge surface arranged at an angle with the third direction, and the driving wheel is in rolling cooperation with the wedge surface.

[0025] As a preferred technical scheme of the coil welding positioning device, a driving wheel is rotatably connected to the driving shaft, a sliding block is movably installed on the workbench, the sliding block can move relative to the workbench in the horizontal plane, the sliding block is provided with a wedge surface arranged at an angle with the third direction, and the driving wheel is in rolling cooperation with the wedge surface.

[0026] As a preferred technical scheme of the coil welding positioning device, the coil welding positioning device further comprises a carrier, the carrier is detachably installed on the platform base, and the pre-assembly position and the welding position are arranged on the carrier.

[0027] As a preferred technical scheme of the coil welding positioning device, the coil welding positioning device further comprises a pre-push block, the pre-push block is movably installed on the platform base, and the pre-push block is used to push the long copper sheet to the pre-assembly position.

[0028] The coil welding positioning device has the following beneficial effects:

[0029] The coil welding positioning method can effectively control the spacing between adjacent long copper sheets by positioning the middle part of the long copper sheet through the first taper tooth, thereby achieving positioning of the long copper sheet and reducing the negative impact of subsequent positioning operations caused by position deviation of the long copper sheet. Then, by positioning the inner end part through the second taper tooth, the inner end part is directly clamped and positioned by the adjacent two second taper teeth, thereby achieving real-time grasping of the position of the inner end part, effectively avoiding the position deviation of the inner end part, and also helping the smooth positioning of the inner end part. Then, by positioning the outer end part through the third taper tooth, the outer end part is directly clamped and positioned by the adjacent two third taper teeth, thereby achieving real-time grasping of the position of the outer end part, effectively avoiding the position deviation of the outer end part, and also helping the smooth positioning of the inner end part. Then, by pushing the long copper sheet, the inner end part, the bridge part and the outer end part of the long copper sheet can be accurately positioned. Then, by positioning the push block and the workbench to clamp the long copper sheet, the relative position of each long copper sheet to the positioning push block and the workbench is determined, avoiding the position deviation of the long copper sheet. Then, the first taper tooth is separated, considering the stress deformation of the long copper sheet caused by heat during welding, avoiding the problem that the first taper tooth is difficult to withdraw after welding is completed, and avoiding the damage to the long copper sheet. The above method can accurately position multiple long copper sheets at the same time, thereby controlling the gap between the long copper sheets, improving the welding effect and work efficiency, and also ensuring the yield of the finished product.

[0030] The coil welding positioning device provides a movable platform for the long copper sheet through the setting of the platform seat, ensuring that the long copper sheet can only complete the predetermined action in the horizontal plane, greatly reducing the risk of position deviation of the long copper sheet due to accidents. The movable installation of the positioning push block ensures that the third taper tooth can smoothly complete the corresponding action, and also helps to limit the movement trajectory of the positioning push block, reducing the deviation of the action of the positioning push block. The design of the workbench moving relative to the platform seat provides space for the workbench to avoid the long copper sheet, which can effectively avoid the early positioning of the second taper tooth to the inner end part, and also timely position when there is a positioning demand for the inner end part. The design of the first taper tooth movably arranged on the workbench ensures the flexibility of the first taper tooth, thereby achieving selective positioning and adjustment of the first taper tooth to the bridge part while positioning the inner end part. The design of the first taper tooth and the workbench moving in the third direction reduces the positioning difficulty of the first taper tooth and the second taper tooth to the long copper sheet, optimizes the stress condition of the long copper sheet, thereby greatly reducing the risk of position deviation of the long copper sheet due to uneven stress, thereby ensuring the positioning effect of the long copper sheet. The structural design of the above workbench simplifies the structure of the coil welding positioning device and reduces the occupied space. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 This is a schematic diagram of the common-mode inductor provided in an embodiment of the present invention;

[0032] Figure 2 This is an exploded view of the common-mode inductor provided in an embodiment of the present invention;

[0033] Figure 3 This is a bottom view of the common-mode inductor provided in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the coil welding positioning device provided in an embodiment of the present invention;

[0035] Figure 5 This is a cross-sectional view of the coil welding positioning device provided in an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the vehicle provided in an embodiment of the present invention;

[0037] Figure 7 yes Figure 6 A magnified view of part A in the image;

[0038] Figure 8 This is a schematic diagram of the coil welding positioning device excluding the workbench provided in an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of the structure of the pre-push block provided in an embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the structure of the pre-push block provided in an embodiment of the present invention;

[0041] Figure 11 This is a schematic diagram of the workbench provided in an embodiment of the present invention from a first-view perspective;

[0042] Figure 12 This is a schematic diagram of the workbench provided in an embodiment of the present invention from a second perspective;

[0043] Figure 13 yes Figure 12 A magnified view of part B in the image;

[0044] Figure 14 yes Figure 11 Cross-sectional view of the EE plane;

[0045] Figure 15 yes Figure 14 A magnified view of part C;

[0046] Figure 16 yes Figure 12 Cross-sectional view of the FF plane;

[0047] Figure 17 yes Figure 16 A magnified view of part of D.

[0048] In the picture:

[0049] X, first direction; Y, second direction; Z, third direction;

[0050] 100. Platform base; 110. Platform bottom plate; 120. Platform top plate; 130. Connecting rod; 140. First drive unit; 150. Second drive unit; 160. Third drive unit; 170. Third slide rail; 180. Linear bearing;

[0051] 200. Pre-push block; 210. First push block body; 211. Push block rod; 220. First push block slide;

[0052] 300. Positioning push block; 310. Second push block body; 311. Third conical tooth; 320. Second push block slide; 330. Second connecting block;

[0053] 410. Drive wheel; 420. Fixed rod;

[0054] 500. Worktable; 511. Lower table plate; 512. First connecting block; 513. Upper table plate; 514. Guide shaft; 515. Second slide rail; 516. Positioning pin; 517. Second conical tooth; 518. First stop block; 519. Second stop block; 520. Sliding block; 521. Wedge-shaped surface; 530. Pressing block; 540. Movable frame; 541. First conical tooth; 551. Drive shaft; 552. Drive wheel; 560. First elastic element;

[0055] 600. Vehicle; 610. Vehicle body; 611. Positioning hole; 612. Limiting boss; 613. Positioning plate; 620. Stop plate;

[0056] 900. Common mode inductor; 910. Core and shell; 920. U-shaped copper sheet; 930. Long copper sheet; 931. Inner end; 932. Bridging part; 933. Outer end. Detailed Implementation

[0057] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0058] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the "above", "over" and "on" of the first feature to the second feature include the first feature directly above and obliquely above the second feature, or only indicate that the first feature is higher in horizontal height than the second feature. The "below", "under" and "under" of the first feature to the second feature include the first feature directly below and obliquely below the second feature, or only indicate that the first feature is lower in horizontal height than the second feature.

[0059] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation on the present application.

[0061] As shown in Figures 1 to 3 The coil welding positioning method is used to process the common mode inductor 900. In this embodiment, the common mode inductor 900 is applied to a filter, and in other embodiments of this embodiment, the common mode inductor 900 is applied to other products that require multiple groups of thin sheets to be welded to form a coil.

[0062] The common mode inductor 900 includes an insulating core shell 910 provided with an annular receiving cavity, a magnetic core received in the annular receiving cavity, and four copper strip winding units wound outside the insulating core shell 910.

[0063] In this embodiment, the core shell 910 includes a first side portion, a second side portion, a third side portion and a fourth side portion connected end to end, the first side portion is arranged opposite to the third side portion, and the second side portion is arranged opposite to the fourth side portion; the copper bar winding unit includes eight copper bar combinations, four of which are spirally wound along the length direction of the first side portion, and the other four are spirally wound along the length direction of the third side portion, and the four copper bar combinations wound on the first side portion are arranged correspondingly to the four copper bar combinations wound on the third side portion; the copper bar winding unit further includes connecting copper bars, which connect two adjacent copper bar combinations on the same side portion, and in the process of current flowing from one copper bar combination to the adjacent other copper bar combination through the connecting copper bar, reverse parallel flow can be formed.

[0064] Exemplarily, the copper bar winding unit includes 36 long copper sheets 930 and 32 U-shaped copper sheets 920.

[0065] Each U-shaped copper sheet 920 includes a bottom arm, an outer side arm and an inner side arm. The outer side arm and the inner side arm are integrally formed at the left and right ends of the bottom arm and extend upward, and an opening is formed between the top of the outer side arm and the top of the inner side arm. The U-shaped copper sheet 920 is wound around three side faces of the corresponding side portion, and the long copper sheet 930 is arranged on the remaining one side face of the corresponding side portion. The long copper sheet 930 includes an inner end portion 931, a bridging portion 932 and an outer end portion 933 connected in sequence, the bridging portion 932 is arranged at an angle with the inner end portion 931 and the outer end portion 933, and the length directions of the inner end portion 931 and the outer end portion 933 are the same. The long copper sheet 930 is used to connect two different U-shaped copper sheets 920, the inner end portion 931 is used to be welded with the inner end of the U-shaped copper sheet 920, and the outer end portion 933 is used to be welded with the outer end of the U-shaped copper sheet 920.

[0066] It should be noted that the "inner" and "outer" in the outer end portion 933, the inner end portion 931, the inner end of the U-shaped copper sheet 920 and the outer end of the U-shaped copper sheet 920 are relative to the spacing center line between the copper bar combinations, which can be understood as that one end of the long copper sheet 930 close to the middle of the core shell 910 is the inner end portion 931, one end of the long copper sheet 930 away from the middle of the core shell 910 is the outer end portion 933, one end of the U-shaped copper sheet 920 close to the middle of the core shell 910 is the inner end of the U-shaped copper sheet 920, and one end of the U-shaped copper sheet 920 away from the middle of the core shell 910 is the outer end of the U-shaped copper sheet 920.

[0067] At present, the size of the bridging portion 932 of the long copper sheet 930 is larger than the size of the inner end portion 931 and the size of the outer end portion 933, which is convenient to use. According to the prior art, it is easy to know that the change of the spacing between the adjacent long copper sheets 930 will cause the spacing between the corresponding bridging portions 932 to be reduced.

[0068] As Figures 1 to 17As shown, the embodiment provides a coil welding positioning method for welding and positioning a plurality of long copper sheets 930, comprising the following steps:

[0069] S12: Place each long copper sheet 930 in a pre-assembly position, and the pre-assembly position is the same as the number of long copper sheets 930 and one-to-one correspondence.

[0070] S20: Insert a plurality of first tapered teeth 541 into the middle part between any two adjacent long copper sheets 930, so that one first tapered tooth 541 is inserted between the middle parts of every two adjacent long copper sheets 930.

[0071] S30: Insert a plurality of second tapered teeth 517 between adjacent long copper sheets 930, so that one inner end part 931 is inserted between every two adjacent second tapered teeth 517, wherein the plurality of second tapered teeth 517 are arranged on the workbench 500.

[0072] S40: Insert a plurality of third tapered teeth 311 between adjacent long copper sheets 930, so that one outer end part 933 is inserted between every two adjacent third tapered teeth 311, wherein the third tapered teeth 311 are arranged on the positioning push block 300.

[0073] S50: Push the long copper sheet 930 by using the positioning push block 300.

[0074] S60: Make all the first tapered teeth 541 disengage from the long copper sheet 930.

[0075] S70: Insert all the long copper sheets 930 between the positioning push block 300 and the workbench 500, so that the long copper sheets 930 move from the pre-assembly position to the welding position.

[0076] In the embodiment, the middle part of the long copper sheet 930 is the bridging part 932, the first tapered tooth 541 matches and contacts the bridging part 932, and the inclination direction of the first tapered tooth 541 is the same as the length direction of the bridging part 932.

[0077] The coil welding positioning method can effectively control the spacing between adjacent long copper sheets 930 by positioning the middle part of the long copper sheet 930 through the first tapered tooth 541, thereby achieving positioning of the long copper sheet 930 and reducing the negative impact of subsequent positioning operations caused by position deviation of the long copper sheet 930. Then, by positioning the inner end part 931 through the second tapered tooth 517, the inner end part 931 can be directly clamped and positioned by the two adjacent second tapered teeth 517, thereby achieving real-time grasping of the position of the inner end part 931, effectively avoiding the position deviation of the inner end part 931, and also helping the smooth positioning of the inner end part 931. Then, by positioning the outer end part 933 through the third tapered tooth 311, the outer end part 933 can be directly clamped and positioned by the two adjacent third tapered teeth 311, thereby achieving real-time grasping of the position of the outer end part 933, effectively avoiding the position deviation of the outer end part 933, and also helping the smooth positioning of the inner end part 931. Then, by pushing the long copper sheet 930, the inner end part 931, the bridge part 932 and the outer end part 933 of the long copper sheet 930 can be accurately positioned. Then, by positioning the push block 300 and the workbench 500 to sandwich the long copper sheet 930, the relative position of each long copper sheet 930, the positioning push block 300 and the workbench 500 is determined, avoiding the position deviation of the long copper sheet 930. Then, the first tapered tooth 541 is disengaged, considering that the long copper sheet 930 may be stressed and deformed due to heat during welding, avoiding the problem that the first tapered tooth 541 is difficult to withdraw after welding is completed, and avoiding damage to the long copper sheet 930. The above method can accurately position multiple long copper sheets 930 at the same time, thereby controlling the gap between the long copper sheets 930, improving the welding effect and work efficiency, and also ensuring the yield of the finished product.

[0078] In this embodiment, S70 is followed by the following steps:

[0079] S80: Weld both ends of all long copper sheets 930.

[0080] In this embodiment, the finished product is a common mode inductor 900, and the welding method between the long copper sheet 930 and the U-shaped copper sheet 920 is laser welding. In other embodiments of this embodiment, the long copper sheet 930 and the U-shaped copper sheet 920 have other shapes and dimensions, and their specific structures are determined by those skilled in the art, which will not be described here.

[0081] When the third tapered teeth 311 are inserted between two adjacent long copper sheets 930, the corresponding outer end portions 933 are also fitted with the outer ends of a U-shaped copper sheet 920, and the outer ends of the U-shaped copper sheet 920 are inserted between two adjacent third tapered teeth 311. When the second tapered teeth 517 are inserted between two adjacent long copper sheets 930, the corresponding inner end portions 931 are also fitted with the inner ends of another U-shaped copper sheet 920, and the outer ends of the U-shaped copper sheet 920 are inserted between two adjacent third tapered teeth 311. Specifically, the distance between two adjacent third tapered teeth 311 is equal to the sum of the thicknesses of the outer ends of the U-shaped copper sheet 920 and the outer end portions 933, and the distance between two adjacent second tapered teeth 517 is equal to the sum of the thicknesses of the inner ends of the U-shaped copper sheet 920 and the inner end portions 931.

[0082] Specifically, in the direction from the tooth top of the tapered tooth to the tooth root of the tapered tooth, the cross-sectional area of the tapered tooth first gradually increases and then remains unchanged.

[0083] In this embodiment, before S12, the following steps are further included:

[0084] S10: Place each long copper sheet 930 in a placement position, and the number of placement positions is equal to and one-to-one corresponds to the number of long copper sheets 930.

[0085] S11: Use the pre-push push block 200 to push the long copper sheet 930, so that all long copper sheets 930 are clamped between the pre-push push block 200 and the workbench 500, so that the long copper sheet 930 moves from the placement position to the pre-assembly position.

[0086] With the pre-push push block 200, the long copper sheet 930 can be preliminarily positioned, so that the long copper sheet 930 cannot be placed in a position that is too large and causes S12 and the subsequent steps to fail to proceed smoothly. The above design greatly improves the operation success rate of the coil welding positioning method, reduces the placement requirements for the long copper sheet 930, and also helps to control the distance between adjacent bridge portions 932, thereby further improving the yield of the finished product.

[0087] Further, the inner end 931 and the outer end 933 each extend along a first direction X, the positioning push block 300 pushes the long copper sheet 930 along the first direction X, and the pre-push push block 200 pushes the long copper sheet 930 along the first direction X, wherein the first direction X is in a horizontal plane. With the above layout design, the structure of the positioning push block 300 and the pre-push push block 200 is simplified, the occupied space is reduced, the difficulty of pushing the long copper sheet 930 by the positioning push block 300 and the pre-push push block 200 is reduced, the position deviation of the long copper sheet 930 caused by uneven force is reduced, the operation of pushing the long copper sheet 930 to the pre-assembly position by the pre-push push block 200 and the operation of pushing the long copper sheet 930 to the welding position by the positioning push block 300 are facilitated, and the success rate of the operations is improved.

[0088] Further, the pre-assembly positions are arranged along a second direction Y, the first tapered teeth 541 are arranged along the second direction Y, the third tapered teeth 311 are arranged along the second direction Y, and the second tapered teeth 517 are arranged along the second direction Y, wherein the second direction Y is in the horizontal plane. With the above design, the arrangement direction of the first tapered teeth 541, the third tapered teeth 311, and the second tapered teeth 517 can be adjusted adaptively according to the arrangement direction of the pre-assembly positions. The above layout design reduces the difficulty of adapting and inserting the tapered teeth to the long copper sheet 930, guarantees the positioning effect of the tapered teeth on different parts of the long copper sheet 930, reduces the risk of the long copper sheet 930 being separated by accident, guarantees the positioning effect of the long copper sheet 930, and further improves the yield of the finished product.

[0089] In this embodiment, the second direction Y is perpendicular to the first direction X.

[0090] This embodiment also provides a coil welding and positioning device, which is suitable for the coil welding and positioning method described above and includes a platform base 100, a workbench 500, and a positioning push block 300. The long copper sheet 930 can move relative to the platform base 100 in a horizontal plane. The positioning push block 300 is movably installed on the platform base 100. The workbench 500 can move relative to the platform base 100 along a third direction Z. The first tapered teeth 541 are movably arranged on the workbench 500 and can move relative to the workbench 500 along the third direction Z, wherein the third direction Z is perpendicular to the horizontal plane.

[0091] The coil welding positioning device provides a movable platform for the long copper sheet 930 by virtue of the platform base 100, ensures that the long copper sheet 930 can only complete the predetermined action in the horizontal plane, and greatly reduces the risk of position deviation of the long copper sheet 930 due to accidents. The movable installation of the positioning push block 300 ensures that the third conical gear 311 can smoothly complete the corresponding action, and also helps to limit the movement trajectory of the positioning push block 300, reducing the deviation of the action of the positioning push block 300. The design that the workbench 500 moves relative to the platform base 100 provides space for the workbench 500 to avoid the long copper sheet 930, which can effectively avoid the early limiting of the second conical gear 517 on the inner end portion 931, and can be in place in time when there is a positioning demand for the inner end portion 931. The design that the first conical gear 541 is movably arranged on the workbench 500 ensures the flexibility of the first conical gear 541, and thus realizes selective positioning and adjustment of the first conical gear 541 on the bridging portion 932 while positioning the inner end portion 931. The design that the first conical gear 541 and the workbench 500 move along the third direction Z reduces the positioning difficulty of the first conical gear 541 and the second conical gear 517 on the long copper sheet 930, optimizes the stress condition of the long copper sheet 930, and thus greatly reduces the risk of position deviation of the long copper sheet 930 due to uneven stress, thereby ensuring the positioning effect of the long copper sheet 930. The above structural design of the workbench 500 simplifies the structure of the coil welding positioning device and reduces the occupied space.

[0092] In the embodiment, the platform base 100 includes a platform bottom plate 110 and a platform top plate 120 located above the platform bottom plate 110, and the platform bottom plate 110 and the platform top plate 120 are connected by a plurality of connecting rods 130 extending along the third direction Z.

[0093] The workbench 500 includes a lower table plate 511 and an upper table plate 513 located above the lower table plate 511, and the lower table plate 511 and the upper table plate 513 are connected by a plurality of guide shafts 514 extending along the third direction Z, and the second conical gear 517 is arranged on the lower surface of the upper table plate 513. A plurality of linear bearings 180 are penetrated through the platform top plate 120, each guide shaft 514 penetrates through one linear bearing 180, and the linear bearing 180 and the guide shaft 514 are in sliding fit. By virtue of the above design, the first conical gear 541 and the second conical gear 517 can be controlled by controlling the movement of the workbench 500 along the third direction Z.

[0094] The first connecting block 512 is fixedly connected to the lower table plate 511, the first driving unit 140 is installed on the platform bottom plate 110, the output end of the first driving unit 140 is connected with the first connecting block 512, and the first driving unit 140 is used for driving the workbench 500 to reciprocate along the third direction Z.

[0095] In the embodiment, the coil welding positioning device further comprises a pre-push push block 200 movably mounted on the platform top plate 120. The movable mounting of the pre-push push block 200 ensures that the pre-push push block 200 can smoothly complete the corresponding pre-push action, and at the same time helps to limit the active track of the pre-push push block 200, thereby reducing the deviation of the action of the pre-push push block 200.

[0096] In the embodiment, the pre-push push block 200 comprises a first push block sliding table 220, and a first push block body 210 is fixedly connected to the first push block sliding table 220. The first push block body 210 is provided with a push block rod 211 extending along the second direction Y, and the pre-push push block 200 pushes the long copper sheet 930 by using the push block rod 211. A second driving unit 150 is mounted on the platform top plate 120, and an output end of the second driving unit 150 is connected with the first push block sliding table 220, for driving the pre-push push block 200 to reciprocate along the first sliding rail. The first push block sliding table 220 is in sliding fit with the first sliding rail, and the first sliding rail extends along the first direction X.

[0097] Exemplarily, the coil welding positioning device further comprises a carrier 600, which is detachably mounted on the platform top plate 120, and the pre-assembly position and the welding position are both arranged on the carrier 600. Before the welding positioning operation, the components of the common-mode inductor 900 are assembled on the carrier 600, and then the carrier 600 is mounted on the platform base 100. After the welding positioning operation, the carrier 600 is first detached from the platform base 100, and then the common-mode inductor 900 is removed from the carrier 600. The above design reduces the difficulty of placing the long copper sheet 930, improves the speed of taking the common-mode inductor 900, and accelerates the working efficiency of the coil welding positioning device.

[0098] The carrier 600 comprises a carrier body 610, and a limiting boss 612 is protruded on the top of the carrier body 610 and can pass through the core shell 910. The top of the limiting boss 612 is further connected with a positioning plate 613, and the pushing action of the pre-push push block 200 on the long copper sheet 930 is stopped when the inner end portion 931 abuts against the positioning plate 613. The positioning plate 613 can limit the deviation direction of the long copper sheet 930, thereby preventing the long copper sheet 930 on the first side portion from crossing the long copper sheet 930 on the third side portion, and avoiding the subsequent difficulty in separating the long copper sheets 930. Two stop plates 620 are fixedly arranged on the carrier body 610, and the two stop plates 620 can clamp the two sides of the common-mode inductor 900. The stop plates 620 ensure the positioning effect of the common-mode inductor 900 on the carrier body 610.

[0099] Specifically, the top of the carrier body 610 is provided with at least two positioning holes 611, and the lower plate surface of the upper platform plate 513 is provided with at least two positioning pins 516, the number of the positioning pins 516 is same as that of the positioning holes 611, and each positioning pin 516 can be matched and inserted into a corresponding positioning hole 611. The cooperation of the positioning pins 516 and the positioning holes 611 guarantees the positioning effect between the carrier 600 and the workbench 500, and avoids the situation that the welding positioning operation cannot be successfully completed due to the installation position offset of the carrier 600.

[0100] In the embodiment, the positioning plate 613 is elastically connected to the top of the limiting boss 612, and the positioning plate 613 can move along the third direction Z relative to the limiting boss 612. When the second taper tooth 517 is inserted between the adjacent long copper sheets 930, the second taper tooth 517 abuts against the positioning plate 613, so that the positioning plate 613 moves towards the limiting boss 612. When the positioning plate 613 is spaced from the second taper tooth 517, the positioning plate 613 is reset. The above definition avoids the positional conflict between the positioning plate 613 and the second taper tooth 517, realizes the smooth insertion of the second taper tooth 517 between the long copper sheets 930, and ensures that the positioning plate 613 can realize the original positioning effect.

[0101] In the embodiment, the first taper tooth 541 is arranged on the movable frame 540, the movable frame 540 is elastically connected to the workbench 500 through the first elastic member 560, the movable frame 540 is provided with a driving shaft 551, the driving shaft 551 can move along the third direction Z relative to the workbench 500, and the first elastic member 560 is used to drive the movable frame 540 to move away from the workbench 500 and abut against the movable frame 540 and the driving shaft 551. Specifically, the movable frame 540 is elastically connected to the lower plate surface of the upper platform plate 513. The elastic connection design enables the first taper tooth 541 to be smoothly inserted between the two bridge portions 932, effectively reduces the rigid collision between the first taper tooth 541 and the bridge portion 932, and reduces the risk of damage to the long copper sheet 930. At the same time, the arrangement of the driving shaft 551 enables to control the farthest distance of the movable frame 540 moving away from the upper platform plate 513, and thus realizes the control of the selective clamping of the bridge portion 932 by the first taper tooth 541. In this way, the bridge portion 932 can be positioned by the first taper tooth 541 through the way of lowering the driving shaft 551, and the first taper tooth 541 is retracted through the way of lifting the driving shaft 551 to avoid the long copper sheet 930.

[0102] Further, the driving shaft 551 is rotationally connected with a driving wheel 552, and the workbench 500 movably has a sliding block 520, which can move in a horizontal plane relative to the workbench 500, and the sliding block 520 is provided with a wedge surface 521 arranged at an angle with the third direction Z, and the driving wheel 552 is in rolling cooperation with the wedge surface 521. Specifically, the lower plate surface of the upper plate 513 is fixedly connected with a second sliding rail 515 extending along the first direction X, and the sliding block 520 can match sliding along the extension direction of the second sliding rail 515; the wedge surface 521 is located on the upper surface of the sliding block 520, and gradually rises from one end of the sliding block 520 to the other end of the sliding block 520. With the above design, the thrust acting on the sliding block 520 along the first direction X can be converted into a driving force for driving the driving shaft 551 to move. The above design optimizes the driving mode of the driving shaft 551, so that the action of the driving shaft 551 can be regulated and controlled through other components, ensures the consistency of the action of the driving shaft 551, and ensures that the first conical teeth 541 can be smoothly withdrawn under the predetermined condition each time. The above improvement improves the automation degree of the coil welding positioning device, ensures the consistency of the welding positioning operation, reduces the risk of misoperation, and further improves the yield of finished products.

[0103] Specifically, the two ends of the driving shaft 551 are coaxially rotationally connected with a driving wheel 552, the second sliding rail 515 is provided with two, and each second sliding rail 515 is slidably connected with a sliding block 520, and the two sliding blocks 520 are respectively matched with the two driving wheels 552; the lower plate surface of the upper plate 513 is also fixedly connected with a first stop block 518 and a second stop block 519, and the first stop block 518 and the second stop block 519 are used to limit the limit position of the sliding block 520 sliding along the second sliding rail 515.

[0104] Further, the positioning push block 300 is rotationally connected with a pushing wheel 410, and the pushing wheel 410 can drive the sliding block 520. Specifically, during the movement of the positioning push block 300 towards the long copper sheet 930, the pushing wheel 410 drives the sliding block 520 to lift the driving shaft 551. The above design makes the action of the driving shaft 551 correspond to the positioning push block 300, and ensures that the first conical teeth 541 can be smoothly withdrawn after the positioning push block 300 positions the outer end portion 933. The above improvement is simple and reliable, ensures the smooth completion of the welding positioning operation, and reduces the risk in the working process of the coil welding positioning device. The design of pushing the sliding block 520 by the pushing wheel 410 is simple and stable, reduces the risk of damage and destruction of each component, and prolongs the service life of the coil welding positioning device.

[0105] Exemplarily, the upper platform 513 is elastically connected with a plurality of abutting blocks 530 through a second elastic member, the second elastic member is used for driving the abutting blocks 530 to move downwards along the third direction Z, and the end, away from the upper platform 513, of the abutting blocks 530 can abut on the pre-push block 200.

[0106] In the embodiment, the first elastic member 560 and the second elastic member are both springs.

[0107] In the embodiment, the positioning push block 300 is fixedly connected with a fixing rod 420, and the pushing wheel 410 is rotationally connected to the fixing rod 420.

[0108] Exemplarily, the positioning push block 300 comprises a second push block sliding table 320, the second push block sliding table 320 is fixedly connected with a second connecting block 330 and a second push block main body 310, and the third conical teeth 311 are arranged at the edge of the second push block main body 310. The third driving unit 160 is installed on the platform top plate 120, the output end of the third driving unit 160 is connected with the second connecting block 330, and the third driving unit 160 is used for driving the positioning push block 300 to reciprocate along the third sliding rail 170, the second push block sliding table 320 is in sliding fit with the third sliding rail 170, and the third sliding rail 170 extends along the first direction X.

[0109] Specifically, the first driving unit 140, the second driving unit 150 and the third driving unit 160 are all air cylinders.

[0110] In the embodiment, the second push block sliding table 320 is divided into two parts, the two parts of the second push block sliding table 320 are connected through two fixing rods 420 respectively, one pushing wheel 410 is rotationally connected to each of the two fixing rods 420, and the two pushing wheels 410 are respectively used for pushing the corresponding sliding blocks 520.

[0111] In the embodiment, considering that the first side and the third side of the common mode inductor 900 are both provided with four copper bar combinations, the pre-push block 200 and the positioning push block 300 are arranged on the two sides of the workbench 500, and are symmetrically arranged about the center of the coil welding positioning device, and the upper platform 513 is also provided with the second conical teeth 517 and the movable frame 540 which are arranged in pairs about the center of the upper platform 513. The specific structure is matched with the common mode inductor 900, and the arrangement mode is a common knowledge in the art, and the present application will not be described in detail due to the limited space.

[0112] Obviously, the above embodiments of the present application are merely example for clearly explaining the present application, and are not intended to limit the embodiments of the present application. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, it is not necessary and also impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A coil welding positioning method for welding and positioning a plurality of long copper sheets (930), both ends of the long copper sheets (930) being an inner end portion (931) and an outer end portion (933), respectively, characterized by, The method comprises the following steps: S12: placing each long copper sheet (930) in a pre-assembly position, the pre-assembly position being the same as and corresponding to the number of long copper sheets (930); S20: inserting a plurality of first tapered teeth (541) into the middle between every two adjacent long copper sheets (930); S30: inserting a plurality of second tapered teeth (517) between adjacent long copper sheets (930), and inserting an inner end (931) between every two adjacent second tapered teeth (517), wherein the plurality of second tapered teeth (517) are arranged on a workbench (500); S40: inserting a plurality of third tapered teeth (311) between adjacent long copper sheets (930), and inserting an outer end (933) between every two adjacent third tapered teeth (311), wherein the third tapered teeth (311) are arranged on a positioning push block (300); S50: pushing the long copper sheets (930) by using the positioning push block (300); S60: making all the first tapered teeth (541) disengage from the long copper sheets (930); S70: clamping all the long copper sheets (930) between the positioning push block (300) and the workbench (500), so that the long copper sheets (930) move from the pre-assembly position to a welding position.

2. The coil welding positioning method of claim 1, wherein, Before S12, the method further comprises the following steps: S10: placing each long copper sheet (930) in a placement position, the placement position being the same as and corresponding to the number of long copper sheets (930); S11: pushing the long copper sheets (930) by using a pre-push push block (200), and clamping all the long copper sheets (930) between the pre-push push block (200) and the workbench (500), so that the long copper sheets (930) move from the placement position to the pre-assembly position.

3. The coil welding positioning method of claim 2, wherein, The inner end (931) and the outer end (933) extend along a first direction (X), the positioning push block (300) pushes the long copper sheets (930) along the first direction (X), the pre-push push block (200) pushes the long copper sheets (930) along the first direction (X), and the first direction (X) is in a horizontal plane.

4. The coil welding positioning method of claim 3, wherein, A plurality of pre-assembly positions are arranged at intervals along a second direction (Y), a plurality of first tapered teeth (541) are arranged at intervals along the second direction (Y), a plurality of third tapered teeth (311) are arranged at intervals along the second direction (Y), and a plurality of second tapered teeth (517) are arranged at intervals along the second direction (Y), and the second direction (Y) is in a horizontal plane.

5. Coil welding positioning apparatus, characterized in that The coil welding positioning method is suitable for any one of claims 1-4, comprising a platform base (100), a workbench (500) and a positioning push block (300), the long copper sheet (930) can move in a horizontal plane relative to the platform base (100), the positioning push block (300) is movably installed on the platform base (100), the workbench (500) can move along a third direction (Z) relative to the platform base (100), and the first bevel gear (541) is movably arranged on the workbench (500) and can move along the third direction (Z) relative to the workbench (500), wherein the third direction (Z) is perpendicular to the horizontal plane.

6. The coil welding positioning apparatus of claim 5, wherein, The first bevel gear (541) is arranged on a movable frame (540) which is elastically connected to the workbench (500) through a first elastic member (560), the movable frame (540) is provided with a driving shaft (551) which can move along the third direction (Z) relative to the workbench (500), and the first elastic member (560) is used to drive the movable frame (540) away from the workbench (500) and stop when the movable frame (540) contacts the driving shaft (551).

7. The coil welding positioning apparatus of claim 6, wherein, The driving shaft (551) is rotatably connected with a driving wheel (552), the workbench (500) is movably provided with a sliding block (520) which can move in a horizontal plane relative to the workbench (500), the sliding block (520) is provided with a wedge surface (521) which is arranged at an angle to the third direction (Z), and the driving wheel (552) is rollingly matched with the wedge surface (521).

8. The coil welding positioning apparatus of claim 7, wherein, The positioning push block (300) is rotatably connected with a pushing wheel (410) which can push the sliding block (520).

9. The coil welding positioning apparatus of claim 5, wherein, The coil welding positioning device further comprises a carrier (600) which is detachably installed on the platform base (100), and the pre-assembly position and the welding position are both arranged on the carrier (600).

10. The coil welding positioning apparatus of claim 5, wherein, The coil welding positioning device further comprises a pre-push block (200) which is movably installed on the platform base (100) and is used to push the long copper sheet (930) to the pre-assembly position.

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