A star-dot-line welding apparatus and a welding method thereof

Abstract

The present application relates to the technical field of stator processing, and discloses a star point wire welding device and a welding method thereof, wherein the star point wire welding device comprises a welding table, a welding frame, a fixing seat, a first limiting assembly, a second limiting assembly and a welding gun, the fixing seat is arranged on the welding table, the fixing seat is provided with an assembly groove for assembling the stator, the first limiting assembly and the second limiting assembly are both arranged on the welding table, the first limiting assembly is located on the outer side of the fixing seat and is used for abutting against the wire end on the stator from the outer side, the second limiting assembly extends to the center of the fixing seat and is used for abutting against the wire end on the stator from the inner side, and the first limiting assembly is provided with a containing groove for placing the star point wire, the containing groove is configured to be in contact with one side of the star point wire and the side wall of the containing groove and in contact with the other side of the star point wire and the wire end when the first limiting assembly abuts against the wire end, and the welding gun is arranged on the welding frame and is used for welding the star point wire. The star point wire and the stator are automatically aligned, and the stability and the welding efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stator processing, in particular to a star point wire welding device and a welding method thereof. BACKGROUND

[0002] In recent years, flat wire motors are increasingly widely used in the fields of new energy vehicles, high-end industrial drives, aerospace, etc. due to their high power density, high efficiency, good heat dissipation performance and other advantages. The stator winding, as the core component of the flat wire motor, its manufacturing process directly affects the performance, reliability and production cost of the motor. In the manufacturing process of the stator winding, the welding of the star point wire and the wire heads of each phase is a key connection link, and the welding quality is directly related to the electrical connectivity, contact resistance, mechanical strength and long-term reliability of the motor winding. The traditional star point wire welding of the stator of the flat wire motor generally adopts manual or semi-automatic welding mode. After the end of the stator winding is shaped, the operator manually aligns and overlaps the star point wire with the wire heads of the multiple phase wires that need to be connected, and then performs welding through argon arc welding, laser welding or resistance welding.

[0003] However, manual welding completely relies on visual judgment and hand feeling adjustment, which requires high operation, has insufficient stability, and needs to be aligned each time, resulting in low welding efficiency.

[0004] Therefore, the prior art still needs to be improved and developed. SUMMARY

[0005] In view of the above problems of the prior art, the present application aims to provide a star point wire welding device and a welding method thereof, which aims to solve the problems of complete dependence on manual operation, unstable welding quality and low welding efficiency in the existing star point wire welding process.

[0006] The technical scheme of the present application is as follows:

[0007] A star point wire welding device, comprising:

[0008] a welding table and a welding frame;

[0009] a fixing seat provided on the welding table, wherein the fixing seat is provided with an assembly groove for assembling the stator;

[0010] a first limiting component and a second limiting component are provided on the welding table; the first limiting component is located on the outer side of the fixing seat and is used to abut the wire head on the stator from the outside; the second limiting component extends to the center of the fixing seat and is used to abut the wire head on the stator from the inside; and the first limiting component is provided with a containing groove for placing the star point wire, and the containing groove is configured such that when the first limiting component abuts the wire head, one side of the star point wire is in contact with the side wall of the containing groove and the other side is in contact with the wire head;

[0011] a welding gun arranged on the welding frame and used for welding the star point line.

[0012] The star point line welding device, wherein the first limiting assembly comprises:

[0013] a driver arranged on the welding table;

[0014] a push rod connected with the driver, the push rod being configured to move towards the assembly groove under the driving of the driver;

[0015] a limiting piece arranged on the push rod, a front end of the limiting piece being provided with an abutting side wall for abutting against the wire end on the stator, and the accommodating groove being formed on the abutting side wall.

[0016] The star point line welding device, wherein a guide groove is arranged on the fixing seat, the guide groove being located at a side of the assembly groove and in communication with the assembly groove;

[0017] the limiting piece comprises a limiting block arranged opposite to the guide groove, the limiting block being provided with the abutting side wall and the accommodating groove;

[0018] wherein the width of the limiting block is equal to the width of the guide groove.

[0019] The star point line welding device, wherein an insertion groove is arranged on the fixing seat, the insertion groove being located at a side of the assembly groove and in communication with the assembly groove; the insertion groove is used for inserting a connecting plate, the connecting plate extending to the center of the assembly groove and being used for assembling the second limiting assembly;

[0020] wherein the insertion groove and the guide groove are symmetrically arranged on two sides of the assembly groove.

[0021] The star point line welding device, wherein the connecting plate is provided with a central shaft hole and a sliding groove extending from the central shaft hole to the edge of the connecting plate; the second limiting assembly comprises:

[0022] a sliding strip slidably arranged in the sliding groove and used for extending into the assembly groove to abut against the wire end;

[0023] a driving disc rotatably arranged on the central shaft hole and covering the sliding groove; the driving disc is provided with an arc-shaped radial cam groove;

[0024] a pin shaft inserted into the radial cam groove and connected with the sliding strip;

[0025] A driving component is arranged on the welding table, and connected with the driving disc to drive the driving disc to rotate.

[0026] The star point wire welding equipment, wherein the plurality of sliding grooves are evenly arranged in a radial manner with the center shaft hole as the center.

[0027] The plurality of radial cam grooves are arranged in a circumferential direction of the driving disc.

[0028] The plurality of sliding grooves are arranged in the plurality of sliding grooves, respectively.

[0029] The star point wire welding equipment, wherein the driving component comprises:

[0030] A pusher is arranged on the welding table.

[0031] A telescopic rod is connected with the pusher at one end and provided with a hook joint at the other end.

[0032] A connecting rod is connected with the driving disc at one end and extends in a radial direction of the driving disc and is provided with a waist hole at the other end.

[0033] The star point wire welding equipment, wherein the pusher is a servo motor or a pneumatic cylinder, and / or the driver is a servo motor or a pneumatic cylinder.

[0034] The star point wire welding equipment, wherein the welding frame comprises:

[0035] A base is provided with a first guide rail extending horizontally.

[0036] A sliding table is slidably arranged on the first guide rail, and the sliding table is provided with a second guide rail extending vertically.

[0037] The application further discloses a star point wire welding method for the star point wire welding equipment.

[0038] A first signal of the stator assembly in place and a second signal of the star point wire assembly in place are collected.

[0039] The second limiting component is started based on the first signal to abut the wire head from the inside of the stator.

[0040] The first limiting component is started based on the second signal to abut the wire head from the outside of the stator.

[0041] After the first limiting assembly and the second limiting assembly are both moved into position, a welding gun is started to weld the star point line.

[0042] Compared with the prior art, the embodiment of the application has the following advantages:

[0043] The star point line welding device disclosed by the application provides two stable assembly platforms by independently arranging a welding table and a welding frame. A fixing seat is arranged on the welding table to assemble a stator into an assembly groove. Meanwhile, a first limiting assembly and a second limiting assembly abut against wire heads from the outer side and the inner side respectively, so that the wire heads on the stator are kept stable during the welding process. In addition, a containing groove arranged on the first limiting assembly can place and constrain the star point line, so that the star point line keeps in contact with the wire heads, and the manual alignment operation is replaced, the alignment accuracy and efficiency are improved. Finally, the welding gun is used to weld the position where the star point line and the wire heads are connected, so as to complete the automatic welding operation. The welding quality is improved, the welding efficiency is improved, and the labor cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0045] Figure 1 It is a structural schematic diagram of the star point line welding device in the application;

[0046] Figure 2 It is an exploded view of the structure of the star point line welding device in the application;

[0047] Figure 3 It is a structural schematic diagram of the limiting piece in the application;

[0048] Figure 4 It is an exploded view of the structure of the second limiting assembly in the application;

[0049] Figure 5 It is a structural schematic diagram of the connecting plate in the application;

[0050] Figure 6 It is a flow chart of the star point line welding method in the application;

[0051] Figure 7 It is a principle block diagram of the terminal in the application.

[0052] Wherein, 10, welding table; 20, welding frame; 21, base; 211, first guide rail; 22, sliding table; 221, second guide rail; 30, fixing seat; 31, assembly groove; 32, guide groove; 33, insertion groove; 40, first limiting assembly; 41, containing groove; 42, driver; 43, push rod; 44, limiting piece; 441, abutting side wall; 442, limiting block; 50, second limiting assembly; 51, sliding bar; 52, driving disc; 521, radial cam groove; 53, pin shaft; 54, driving part; 541, pusher; 542, telescopic rod; 5421, hooke joint; 543, connecting rod; 5431, waist-shaped hole; 60, welding gun; 70, connecting plate; 71, center shaft hole; 72, sliding groove. DETAILED DESCRIPTION

[0053] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the present application.

[0054] Due to manufacturing techniques and / or tolerances, variations in the shapes illustrated in the drawings can occur. Therefore, examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in the shapes that occur during manufacturing. The flow diagrams illustrated in the drawings are examples only and are not necessarily implemented in the order as described. For example, some operations or steps can be performed in a different order, combined or partially combined, and thus the actual order performed can vary depending on the actual implementation.

[0055] As used herein, the term "and / or" includes any one of the listed items and any combination of any two or more of the listed items.

[0056] Although terms such as "first", "second", and "third" can be used herein to describe various components, assemblies, regions, layers or sections, these components, assemblies, regions, layers or sections are not limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or section from another component, assembly, region, layer or section. Thus, a component, assembly, region, layer or section referred to as a first component, assembly, region, layer or section in the examples described herein can also be referred to as a second component, assembly, region, layer or section without departing from the teachings of the examples.

[0057] For ease of description, spatially relative terms, such as "on", "upper", "lower", "above", and "below", can be used herein for the purpose of illustrating one element's relationship to another element within the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as being "on" or "above" other elements would then be oriented "below" other elements - the terms "on" and "above" encompass both orientations. The device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0058] The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" and "contains", "containing" are inclusive and do not exclude other

[0059] Referring to Figure 1 In an embodiment of the present application, a star point wire welding device is disclosed, which comprises a welding table 10, a welding frame 20, a fixing seat 30, a first limiting assembly 40, a second limiting assembly 50 and a welding gun 60. The fixing seat 30 is arranged on the welding table 10. The welding gun 60 is arranged on the welding frame 20 and used for welding the star point wire.

[0060] The star point wire welding device disclosed in the embodiment provides two stable assembly tables by independently arranging the welding table 10 and the welding frame 20. The fixing seat 30 is arranged on the welding table 10 to assemble the stator into the fixing seat 30. Then the stator is aligned by the welding gun 60 to weld the wire head.

[0061] As shown in Figure 2 and Figure 3 The fixing seat 30 is provided with an assembly groove 31 for assembling the stator. The first limiting assembly 40 and the second limiting assembly 50 are arranged on the welding table 10. The first limiting assembly 40 is arranged on the outer side of the fixing seat 30 and used for abutting against the wire head on the stator from the outside. The second limiting assembly 50 extends to the center of the fixing seat 30 and is used for abutting against the wire head on the stator from the inside. The first limiting assembly 40 is provided with a containing groove 41 for placing the star point wire. When the first limiting assembly 40 abuts against the wire head, one side of the star point wire is in contact with the side wall of the containing groove 41 and the other side is in contact with the wire head.

[0062] In the embodiment, the first limiting assembly 40 and the second limiting assembly 50 respectively abut the wire heads from the outer side and the inner side, so that the wire heads on the stator are kept stable during the welding process. In addition, the accommodating groove 41 arranged on the first limiting assembly 40 can place and constrain the star point wire, so that the star point wire keeps in contact with the wire heads, instead of manual alignment operation, which can improve the alignment accuracy and efficiency.

[0063] In summary, the position where the star point wire and the wire heads are connected is welded by the welding gun 60 to complete the automatic welding operation, which improves the welding quality and efficiency and saves labor cost.

[0064] For example Figure 2 and Figure 3 As another embodiment of the present application, the first limiting assembly 40 includes a driver 42, a push rod 43 and a limiting piece 44, the driver 42 is arranged on the welding table 10, the push rod 43 is connected with the driver 42, the push rod 43 is configured to move towards the assembly groove 31 under the driving of the driver 42, the limiting piece 44 is arranged on the push rod 43, the front end of the limiting piece 44 is provided with an abutting side wall 441 in the moving direction of the push rod 43, the abutting side wall 441 is used for abutting the wire heads on the stator, and the accommodating groove 41 is formed on the abutting side wall 441.

[0065] In the embodiment, the driver 42 can be fixed on the welding table 10 by screwing, welding or the like, and is assembled on the outside of the fixing seat 30. When the driver 42 is started, the push rod 43 can be pushed to move towards the assembly groove 31, so as to drive the limiting piece 44 to move synchronously towards the assembly groove 31 until the abutting side wall 441 extends into the assembly groove 31 and abuts the wire heads on the stator. The mechanical driving mode is simple and stable, which is conducive to improving the control accuracy and can accurately control the position of the limiting piece 44 to ensure abutting the wire heads and keeping stable.

[0066] Specifically, the accommodating groove 41 is used for placing the star point wire, and the accommodating groove 41 is arranged on the abutting side wall 441. Therefore, when the abutting side wall 441 abuts the wire heads, the wire heads are located on the side of the accommodating groove 41, and the star point wire can simultaneously contact and keep stable with the wire heads, so as to improve the stability during the welding process, facilitate quick alignment and improve the welding efficiency.

[0067] Specifically, the shape of the abutting side wall 441 in the embodiment disclosed herein is the same as that of the side wall of the star point line. The star point line contacts the line head from the side. On the star point line, in order to adapt to the line head in multiple positions, generally, a plurality of locally bent contact sections are provided, so that the overall shape of the star point line is arc-shaped, and locally protrudes inward or outward. The shape of the abutting side wall 441 is set to be the same as that of the side wall of the star point line, so that the abutting side wall 441 simultaneously contacts multiple line heads, supports multiple line heads, and reduces unnecessary extrusion. Preventing the line head from changing its position due to the abutting side wall 441 pushing the line head, thereby affecting the contact between the line head and the star point line.

[0068] Specifically, in another embodiment of the present embodiment, the star point line is completely adapted to the accommodating groove 41, and the shape of the accommodating groove 41 is completely the same as that of the star point line. Therefore, the star point line can be stably placed in the accommodating groove 41, and the risk of deviation and falling during movement can be reduced, which is beneficial to improve the alignment accuracy of the star point line and the line head.

[0069] Specifically, the front end of the limiting piece 44 in the embodiment disclosed herein is in a stepped shape, the lower part protrudes to form the abutting side wall 441, and the upper half forms the accommodating groove 41. Moreover, the shapes of the side walls of the upper and lower two steps are the same, and are consistent with the shape of the side wall of the star point line. Therefore, the limiting piece 44 can simultaneously approach multiple line heads without extrusion, and the star point line is transported to the side of the multiple line heads to achieve contact without mutual extrusion, so that the original position welding can be maintained, the shape of the stator can be avoided from being changed, and the production quality of the product can be improved.

[0070] Further Figure 2 and Figure 3 As another embodiment of the present application, as shown in the drawings, the fixing seat 30 is provided with a guide groove 32 located on the side of the assembly groove 31 and communicating with the assembly groove 31. The limiting piece 44 includes a limiting block 442 opposite to the guide groove 32, and the limiting block 442 is provided with the abutting side wall 441 and the accommodating groove 41. The width of the limiting block 442 is equal to the width of the guide groove 32.

[0071] The limiting piece 44 in the embodiment disclosed herein is only supported by the push rod 43, and may be deflected or vibrated during movement. The guide groove 32 is provided to constrain the limiting block 442. The side wall of the guide groove 32 is in close contact with the side wall of the limiting block 442, so that the limiting block 442 can only move towards or out of the assembly groove 31, thereby improving the stability during movement and further improving the stability of the star point line during movement towards the line head, and avoiding falling.

[0072] As Figure 2 and Figure 5As shown in FIG. 1, as another embodiment of the present application, the fixed seat 30 is provided with a slot 33, which is located at the side of the assembly groove 31 and communicates with the assembly groove 31; the slot 33 is used for inserting a connecting plate 70, which extends to the center of the assembly groove 31 and is used for assembling the second limiting component 50; the slot 33 is symmetrically arranged with the guide groove 32 on both sides of the assembly groove 31.

[0073] The slot 33 disclosed in the embodiment is used for providing a connecting position, so that the connecting plate 70 can be assembled on the fixed seat 30. Moreover, the slot 33 is symmetrically arranged with the guide groove 32, the connecting plate 70 is assembled in the slot 33, and the limiting piece 44 moves in the guide groove 32, so that the connecting plate 70 and the limiting piece 44 are relatively arranged and are in the same plane. On this basis, the second limiting component 50 assembled on the connecting plate 70 is opposite to the limiting piece 44 and can provide support from the inner side and the outer side of the wire respectively, so as to improve the stability of the wire in position.

[0074] In other words, the slot 33 is arranged opposite to the guide groove 32 in the embodiment, which can improve the alignment accuracy of the first limiting component 40 and the second limiting component 50, the stress positions on both sides of the wire are opposite, can be offset to each other, keep the wire stable in the initial position, avoid extruding the wire, and prevent the wire from being twisted and deformed. Further, the stability of the wire is improved, which is more conducive to the stable lamination of the star point wire and the wire, and improves the welding quality.

[0075] As shown in FIG. 1, as another embodiment of the present application, the fixed seat 30 is provided with a slot 33, which is located at the side of the assembly groove 31 and communicates with the assembly groove 31; the slot 33 is used for inserting a connecting plate 70, which extends to the center of the assembly groove 31 and is used for assembling the second limiting component 50; the slot 33 is symmetrically arranged with the guide groove 32 on both sides of the assembly groove 31. Figure 2 , Figure 4 and Figure 5 As shown in FIG. 1, as another embodiment of the present application, the fixed seat 30 is provided with a slot 33, which is located at the side of the assembly groove 31 and communicates with the assembly groove 31; the slot 33 is used for inserting a connecting plate 70, which extends to the center of the assembly groove 31 and is used for assembling the second limiting component 50; the slot 33 is symmetrically arranged with the guide groove 32 on both sides of the assembly groove 31.

[0076] The second limiting assembly 50 disclosed in the embodiment is powered by the driving component 54 to drive the disc to rotate, and the slide bar 51 is driven by the pin shaft 53 in the sliding groove 72 below the disc. During the rotation of the disc, the position of the pin shaft 53 in the radial cam groove 521 changes, and the pin shaft 53 is pushed along the radial direction of the disc by the sidewall of the radial cam groove 521, thereby driving the slide bar 51 to move outward from the sliding groove 72, i.e., to extend into the assembly groove 31 to contact the thread on the stator.

[0077] As can be seen, the second limiting assembly 50 disclosed in the embodiment can accurately control the position of the slide bar 51 through mechanical transmission, thereby improving the control accuracy to stably abut against the thread. Unlike the traditional telescopic structure, the slide bar 51 is driven by the disc to move, which occupies a small space and is convenient for reciprocating driving, and is conducive to simplifying the structure.

[0078] Further as shown in Figure 2 and Figure 5 , as another embodiment of the application, it is disclosed that the sliding groove 72 is provided with a plurality of sliding grooves 72, which are uniformly arranged in a radial manner with the center shaft hole 71 as the center; the radial cam groove 521 is provided with a plurality of radial cam grooves 521, which are arranged in a circumferential direction of the driving disc 52; the slide bar 51 is provided with a plurality of slide bars 51, which are respectively arranged in the plurality of sliding grooves 72; and the pin shaft 53 is provided with a plurality of pin shafts 53, which are respectively arranged in the plurality of radial cam grooves 521.

[0079] The star point thread disclosed in the embodiment simultaneously contacts a plurality of threads on the stator, so that the plurality of pin shafts 53 assembled on the driving disc 52 are simultaneously driven to drive the plurality of slide bars 51 to move simultaneously to achieve the effect of simultaneously abutting against the plurality of threads. As can be seen, the driving efficiency can be improved by the driving disc 52, and the movement of the plurality of slide bars 51 can be accurately controlled.

[0080] As shown in Figure 4 , as another embodiment of the application, it is disclosed that the driving component 54 includes a pusher 541, an extension rod 542, and a connecting rod 543, the pusher 541 is arranged on the welding table 10; one end of the extension rod 542 is connected with the pusher 541, and the other end is provided with a hook hinge 5421; one end of the connecting rod 543 is connected with the driving disc 52, and the other end extends along the radial direction of the driving disc 52 and is provided with a waist-shaped hole 5431; and the waist-shaped hole 5431 is used to assemble the hook hinge 5421.

[0081] The pusher 541 disclosed in the embodiment can drive the telescopic rod 542 to move in a straight line direction, the hook joint 5421 is hinged with the connecting rod 543, the pushing force is transmitted to the connecting rod 543, the connecting rod 543 drives the driving disc 52 to rotate together. In addition, the waist-shaped hole 5431 is arranged on the connecting rod 543 to avoid being stuck, when the connecting rod 543 rotates, the hook joint 5421 slides in the waist-shaped hole 5431, and the connection between the connecting rod 543 and the telescopic rod 542 is maintained.

[0082] Specifically, as another embodiment of the application, the pusher 541 is a servo motor or a pneumatic cylinder; and the driver 42 can also be a servo motor or a pneumatic cylinder. Both the servo motor and the pneumatic cylinder can provide a pushing force in a straight line direction, can maintain uniform pushing force, and further improve the stability during assembly.

[0083] In the embodiment, the pusher 541 and the driver 42 can adopt the same type of servo motor or pneumatic cylinder, so as to simplify the operation and save the cost.

[0084] It should be noted that the type of the pusher 541 or the driver 42 is only exemplified in the embodiment, but the protection scope of the application is not limited thereto, and other types of pusher 541 or driver 42 that can achieve the technical effects disclosed in the application as equivalent replacements of the concept of the application should also be within the protection scope of the application.

[0085] For example Figure 1 and Figure 2 As another embodiment of the application, the welding frame 20 includes a base 21 and a sliding table 22, the base 21 is provided with a horizontally extending first guide rail 211; the sliding table 22 is slidably arranged on the first guide rail 211; the sliding table 22 is provided with a vertically extending second guide rail 221; and the welding gun 60 is slidably arranged on the second guide rail 221.

[0086] The welding frame 20 disclosed in the embodiment is arranged side by side with the welding table 10, the base 21 is provided with the horizontal first guide rail 211, so that the sliding table 22 can freely slide and drive the welding gun 60 to move above the assembly groove 31; or move away from above the assembly groove 31, so as to disassemble the stator before welding or after welding. In the embodiment, the second guide rail 221 is vertically arranged to drive the welding gun 60 to descend to the contact position of the star point line and the wire head for welding, and after the welding is completed, the welding gun 60 is lifted to facilitate moving out.

[0087] Specifically, the sliding table 22 and the welding gun 60 disclosed in the embodiment can be controlled in a motor-driven or air cylinder-driven manner, so that the position of the sliding table 22 on the first guide rail 211 is accurately controllable, and the position of the welding gun 60 on the second guide rail 221 is accurately controllable, thereby improving the control accuracy of the equipment and facilitating the improvement of the welding quality and the orderly automatic welding operation.

[0088] As shown in Figure 6 As another embodiment of the present application, a star-dot-line welding method is disclosed, which is used for the star-dot-line welding equipment as any of the above, and comprises the following steps:

[0089] In step S10, a first signal of the stator assembly in place and a second signal of the star-dot-line assembly in place are collected.

[0090] In step S20, the second limiting assembly 50 is started based on the first signal to abut the wire head from the inside of the stator.

[0091] In step S30, the first limiting assembly 40 is started based on the second signal to abut the wire head from the outside of the stator.

[0092] In step S40, after the first limiting assembly 40 and the second limiting assembly 50 are both moved in place, the welding gun 60 is started to weld the star-dot-line.

[0093] The welding method disclosed in the embodiment can automatically perform the welding operation after the first signal and the second signal are collected by presetting the welding position, has a high degree of automation, and is beneficial to replace manual work to complete the high-precision and high-quality welding process. Specifically, the first signal and the second signal can be pressure signals or light signals collected by sensing components such as pressure sensors, infrared sensors, and cameras.

[0094] In some embodiments, a terminal is provided, and an internal structure diagram of the terminal can be as shown in Figure 7 The terminal comprises a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, the memory, and the input / output interface are connected through a system bus, and the communication interface, the display unit, and the input device are connected to the system bus through the input / output interface. The processor of the terminal is used to provide computing and control capabilities. The memory of the terminal comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the terminal is used to exchange information between the processor and external devices. The communication interface of the terminal is used to communicate with external terminals in a wired or wireless manner. The wireless manner can be achieved through WIFI, mobile cellular network, NFC (near field communication), or other technologies.

[0095] The computer program is executed by the processor to implement the star point welding method described above. The display unit of the terminal is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device, and the display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the terminal can be a touch layer overlaid on the display screen, or a button, trackball or touchpad arranged on the shell of the terminal, or an external keyboard, touchpad or mouse, etc.

[0096] Those skilled in the art can understand that, Figure 7 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the terminal to which the scheme of the present application is applied. A specific terminal can include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0097] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments.

[0098] The processor involved in each embodiment provided by the present application can be a general processor, a central processor, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0099] It should be understood that parts of the present application can be realized by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be realized by software or firmware stored in a memory and executed by a suitable instruction execution system. If realized by hardware and as in another embodiment, any one or a combination of the following technologies known in the art can be used: discrete logic circuit with logic gate circuit for implementing logic function on data signal, application specific integrated circuit with suitable combination of logic gate circuit, programmable gate array, field programmable gate array, etc.

[0100] In addition, each functional unit in each embodiment of the present application can be integrated in one processing module, or each unit can be physically present separately, or two or more units can be integrated in one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0101] In summary, the application discloses a star point wire welding device, which comprises a welding table 10, a welding frame 20, a fixing seat 30, a first limiting assembly 40, a second limiting assembly 50 and a welding gun 60, the fixing seat 30 is arranged on the welding table 10, an assembly groove 31 for assembling a stator is arranged on the fixing seat 30, the first limiting assembly 40 and the second limiting assembly 50 are both arranged on the welding table 10, the first limiting assembly 40 is located on the outer side of the fixing seat 30 and is used for abutting against a wire end on the stator from the outer side, the second limiting assembly 50 extends to the center of the fixing seat 30 and is used for abutting against the wire end on the stator from the inner side, the first limiting assembly 40 is provided with a containing groove 41 for placing a star point wire, when the first limiting assembly 40 abuts against the wire end, one side of the star point wire is in contact with the side wall of the containing groove 41 and the other side is in contact with the wire end, and the welding gun 60 is arranged on the welding frame 20 and is used for welding the star point wire. The wire end on the stator is kept stable during the welding process by the first limiting assembly 40 and the second limiting assembly 50 abutting against the wire end from the outer side and the inner side respectively, the star point wire is placed and constrained by the containing groove 41, the star point wire is kept in contact with the wire end, and the position where the star point wire and the wire end are connected is welded by the welding gun 60, so that the automatic welding operation is completed. The welding quality is improved, the welding efficiency is improved, and the labor cost is saved.

[0102] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict.

[0103] It should be noted that the application takes the star point wire welding device and the welding method thereof as an example to introduce the specific structure and working principle of the application, but the application is not limited to the star point wire welding device and the welding method thereof, and can also be applied to the production and use of other similar workpieces.

[0104] It should be understood that the application is not limited to the precise construction which has been described above and illustrated in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the claims that follow.

[0105] The above only describes the preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A star point welding apparatus, characterized by, The utility model relates to a welding station and a welding frame. A fixing base is arranged on the welding station, and an assembly groove for assembling a stator is arranged on the fixing base. A first limiting component and a second limiting component are arranged on the welding station, the first limiting component is located outside the fixing base and used for abutting against a wire end on the stator from the outside, the second limiting component extends to the center of the fixing base and is used for abutting against the wire end on the stator from the inside, and a containing groove for placing a star point wire is arranged on the first limiting component, the containing groove is configured to be in contact with the star point wire on one side and the wire end on the other side when the first limiting component abuts against the wire end. A welding gun is arranged on the welding frame and used for welding the star point wire. The first limiting component comprises a driver, a push rod and a limiting piece, the driver is arranged on the welding station, the push rod is connected with the driver, the push rod is configured to move towards the assembly groove under the driving of the driver, and the limiting piece is arranged on the push rod. An abutting side wall is arranged on the front end of the limiting piece along the moving direction of the push rod, the abutting side wall is used for abutting against the wire end on the stator, and the containing groove is formed on the abutting side wall. A guide groove is arranged on the fixing base, the guide groove is located on the side of the assembly groove and communicates with the assembly groove, the limiting piece comprises a limiting block opposite to the guide groove, the abutting side wall and the containing groove are arranged on the limiting block, and the width of the limiting block is equal to the width of the guide groove. An insertion groove is arranged on the fixing base, the insertion groove is located on the side of the assembly groove and communicates with the assembly groove, the insertion groove is used for inserting a connecting plate, the connecting plate extends to the center of the assembly groove and is used for assembling the second limiting component, and the insertion groove and the guide groove are symmetrically arranged on the two sides of the assembly groove. A center shaft hole and a sliding groove extending from the center shaft hole to the edge of the connecting plate are arranged on the connecting plate, the second limiting component comprises a sliding strip, a driving disc, a pin shaft and a driving part, the sliding strip is slidably arranged in the sliding groove and used for extending into the assembly groove to abut against the wire end, the driving disc is rotatably arranged on the center shaft hole and covers the sliding groove, an arc-shaped radial cam groove is arranged on the driving disc, the pin shaft is inserted into the radial cam groove and connected with the sliding strip, the driving part is arranged on the welding station, and the driving part is connected with the driving disc and used for driving the driving disc to rotate.

2. The star-to-line welding apparatus of claim 1, wherein The sliding groove is provided with a plurality of sliding grooves, and the plurality of sliding grooves are uniformly arranged in a radial manner with the center shaft hole as the center. The radial cam groove is provided with a plurality of radial cam grooves, and the plurality of radial cam grooves are arranged in a circumferential direction of the driving disc. The sliding strip is provided with a plurality of sliding strips, and the pin shaft is provided with a plurality of pin shafts.

3. The star-to-web welding apparatus of claim 1, wherein, The driving part comprises a pusher arranged on the welding station, and a telescopic rod connected with the pusher at one end and provided with a hook joint at the other end. ​ ​ A connecting rod, one end of which is connected with the driving disc, and the other end of which extends along the radial direction of the driving disc and is provided with a waist-shaped hole; the waist-shaped hole is used for assembling the Hooke joint.

4. The star-to-web welding apparatus of claim 3, wherein, The pusher is a servo motor or a pneumatic cylinder; and / or the driver is a servo motor or a pneumatic cylinder.

5. The star-to-web welding apparatus of claim 1, wherein, The welding frame comprises: A base provided with a first guide rail extending horizontally; A sliding table slidably arranged on the first guide rail; the sliding table is provided with a second guide rail extending vertically; and the welding gun is slidably arranged on the second guide rail.

6. A star point welding method using the star point welding apparatus according to any one of claims 1 to 5, characterized by, It comprises: Collecting a first signal that a stator is assembled in place and a second signal that a star point wire is assembled in place; Starting a second limiting component based on the first signal to abut against a wire head from the inside of the stator; Starting a first limiting component based on the second signal to abut against a wire head from the outside of the stator; After the first limiting component and the second limiting component are both moved into position, starting the welding gun to weld the star point wire.

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