Stator laser welding machine

Abstract

The invention belongs to the technical field of varnished wire welding, and particularly relates to a stator laser welding machine which comprises a base, a rotating part is connected to the upper end of the base, a plurality of clamps are connected to the upper end of the rotating part, and two conveying parts used for conveying the clamps are symmetrically connected to the upper end of the base. The upper end of the base is further connected with a material taking and placing unit used for taking out the workpiece from one conveying part and placing the workpiece in the clamp or taking out the workpiece in the clamp and placing the workpiece on the other conveying part, and the upper end of the base is further symmetrically connected with two laser welding units used for conducting laser welding on the workpiece in the clamp. The upper end of the base is connected with a solder paste dispensing unit used for dispensing solder paste on a workpiece in the clamp and a detection unit used for detecting the welding condition of the workpiece. The multiple unit modules including the material taking and placing unit, the solder paste dispensing unit, the laser welding unit and the detection unit are integrated, the occupied area can be effectively reduced through the compact design, and the device is more suitable for being used in the production environment with the limited space.

Description

Technical Field

[0001] The present application relates to the technical field of enameled wire welding, and specifically to a stator laser welding machine. Background Art

[0002] Enameled wire is a metal wire coated with insulating paint on the surface. It is a key raw material for products such as motors and electrical appliances.

[0003] At present, laser welding is mostly used for welding enameled wires and pads. The entire welding process requires multiple steps. The welding of the enameled wires and pads is achieved by sequentially performing tinning, welding, and testing on the workpieces. There are multiple devices corresponding to the above-mentioned multiple steps. The workpieces are processed in sequence by multiple devices to obtain welded products. Although automated assembly line welding of enameled wires and pads can be achieved, multiple devices sequentially processing workpieces requires a larger production space to accommodate these devices. Each device has its own size and working area, and space needs to be left between devices for the transmission and buffering of workpieces, resulting in a large space occupation. At the same time, once the layout of multiple independent devices is determined, it is difficult to make quick adjustments because changing the position of the equipment may involve re-laying transmission pipelines and wires, as well as re-adjusting the connection process between the equipment. Summary of the invention

[0004] The purpose of this application is to provide a stator laser welding machine to solve the technical problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a stator laser welding machine, comprising a base, a rotating part connected to the upper end of the base, and a plurality of clamps connected to the upper end of the rotating part, two conveying parts for conveying the clamps being symmetrically connected to the upper end of the base, a material taking and placing unit for removing a workpiece from one conveying part and placing it in a clamp or removing a workpiece from a clamp and placing it on another conveying part being also connected to the upper end of the base, two laser welding units for laser welding the workpiece in the clamp being also symmetrically connected to the upper end of the base, and a solder paste applying unit for applying solder paste to the workpiece in the clamp and a detection unit for detecting the welding condition of the workpiece being connected to the upper end of the base.

[0006] Preferably, the material taking and unloading unit includes an X-axial moving part 1 fixedly connected to the upper end of the base, two cylinders 1 fixedly connected to the moving end of the X-axial moving part 1, and clamping cylinders respectively fixedly connected to the telescopic ends of the two cylinders 1.

[0007] Preferably, the solder paste dispensing unit includes a first Y-axial moving part, a second X-axial moving part fixedly connected to the moving end of the first Y-axial moving part, a first Z-axial moving part fixedly connected to the moving end of the second X-axial moving part, a mounting plate fixedly connected to the moving end of the first Z-axial moving part, a solder paste dispensing assembly fixedly connected to one side of the mounting plate, and a CCD camera.

[0008] Preferably, the laser welding unit includes an X-axial moving part three fixedly connected to the upper end of the base, a Y-axial moving part two fixedly connected to the moving end of the X-axial moving part three, a Z-axial moving part two fixedly connected to the moving end of the Y-axial moving part two, a connecting plate fixedly connected to the moving end of the Z-axial moving part two, a laser welding assembly fixedly connected to one side of the connecting plate, and a smoking pipe fixedly connected to the other side of the connecting plate.

[0009] Preferably, the detection unit includes a Y-axial moving part three fixedly connected to the upper end of the base, an X-axial moving part four fixedly connected to the moving end of the Y-axial moving part three, a Z-axial moving part three fixedly connected to the moving end of the X-axial moving part four, a fixed plate fixedly connected to the moving end of the Z-axial moving part three, a CCD camera two fixedly connected to one side of the fixed plate, a vertical plate vertically fixedly connected to one side of the fixed plate, a cylinder two and a cylinder three respectively fixed to both sides of the vertical plate, a cutting knife part fixedly connected to the telescopic end of the cylinder two, and a test contact fixedly connected to the telescopic end of the cylinder three.

[0010] Preferably, a lifting cylinder is also fixedly connected to the upper end of the base, and a through groove is opened in the rotating part to facilitate the telescopic end of the lifting cylinder to pass through. When the cylinder drives the cutter part to descend to cut the wire feet at the welding point of the workpiece, the telescopic end of the lifting cylinder extends out from the through groove and fits with the lower end of the clamp to support the bottom of the clamp.

[0011] Compared with the prior art, the beneficial effects of this application are:

[0012] 1) This application integrates multiple unit modules such as the material loading and unloading unit, solder paste dispensing unit, laser welding unit, and detection unit. The compact design can effectively reduce the floor space, making it more suitable for use in a production environment with limited space. At the same time, it can be flexibly laid out in the design stage according to the actual situation of the production site and specific production needs. In addition, some integrated modules are easier to fine-tune their positions during subsequent use.

[0013] 2) This application can not only realize the inspection of weldments through the detection unit, but also realize the cutting of the enameled wire legs at the welding points and the electrical measurement at the welding points. After welding is completed, the wire legs can be directly cut and the electrical measurement can be performed without transferring the workpiece to a special wire leg cutting device and electrical measurement device, thereby reducing the waiting time and transportation time between processes, thereby greatly improving the overall production efficiency. At the same time, it can capture possible defects in the first time, avoiding defective products from flowing into the next process, and effectively improving the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application.

[0015] Figure 2 This is a schematic diagram of the positional relationship between the material loading and unloading unit, solder paste dispensing unit, laser welding unit and detection unit in this application.

[0016] Figure 3 This is a schematic diagram of the laser welding unit structure of this application.

[0017] Figure 4 This is a schematic diagram of the solder paste unit structure for this application.

[0018] Figure 5 This is a schematic diagram of the detection unit structure of this application.

[0019] Figure 6 This is a schematic diagram of the structure of the material taking and unloading unit for this application.

[0020] Figure 7 This is a schematic diagram of the fixture and workpiece structure for this application.

[0021] Figure 8 This is a schematic diagram of the lifting cylinder and through groove structure of this application.

[0022] Fig. 9 For this application Figure 8 A magnified schematic diagram of the structure in the middle.

[0023] In the figure: 1. base; 2. rotating part; 21. through groove; 3. conveying part; 4. material taking and discharging unit; 41. X-axial moving part one; 42. cylinder one; 43. clamping cylinder; 5. solder paste dispensing unit; 51. Y-axial moving part one; 52. X-axial moving part two; 53. Z-axial moving part one; 54. mounting plate; 55. solder paste dispensing assembly; 56. CCD camera one; 6. laser welding unit; 61. X-axial moving part three; 62. Y-axial moving part two; 63. Z-axial moving part two; 64. connecting plate; 65. laser welding assembly; 66. smoking pipe; 7. detection unit; 71. Y-axial moving part three; 72. X-axial moving part four; 73. Z-axial moving part three; 74. fixing plate; 75. CCD camera two; 76. cylinder two; 77. cutter part; 78. cylinder three; 79. test contact; 8. lifting cylinder. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying 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 specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0026] Example:

[0027] See also Figure 1-7 The present application provides a technical solution: a stator laser welding machine, comprising a base 1, the upper end of the base 1 is connected to a rotating part 2 (the rotating part 2 includes a dividing plate and a divider assembly, the divider assembly serves as a first-stage transmission device, converts continuous rotational motion into intermittent motion, provides intermittent power input for the dividing plate, and the dividing plate is further driven by the divider assembly to achieve precise angular indexing), and the upper end of the rotating part 2 is connected to a plurality of fixtures, which are driven by the rotating part 2 to precisely rotate and shift the plurality of fixtures and the workpieces clamped in the fixtures, and the upper end of the base 1 is symmetrically connected to two for The conveying part 3 for conveying the fixture is a conveying belt assembly. The two conveying parts 3 are respectively used to convey the welded fixture and the unwelded fixture. The upper end of the base 1 is also connected to a loading and unloading unit 4 for taking the workpiece from one conveying part 3 and placing it in the fixture or taking the workpiece in the fixture and placing it on another conveying part 3. The upper end of the base 1 is also symmetrically connected to two laser welding units 6 for laser welding the workpiece in the fixture, and the upper end of the base 1 is connected to a solder paste application unit 5 for applying solder paste to the workpiece in the fixture and a detection unit 7 for detecting the welding condition of the workpiece.

[0028] The material taking and unloading unit 4 includes an X-axis moving part 41 fixedly connected to the upper end of the base 1, two cylinders 42 fixedly connected to the moving end of the X-axis moving part 41, and clamping cylinders 43 respectively fixedly connected to the telescopic ends of the two cylinders 42.

[0029] By adopting the above scheme and combining Figure 1 and Figure 2The following description is made: the rotating part 2 rotates clockwise to move the workpiece after the inspection by the inspection unit 7 to the bottom of the pick-up and discharge unit 4. At this time, the X-axial moving part 41 moves the moving end and the two cylinders 42 and the two clamping cylinders 43 to the right, so that the clamping cylinder 43 on the right side moves to the top of the conveying part 3 on the right side, and then the cylinder 42 on the right side works to drive the clamping cylinder 43 to descend, and the clamping cylinder 43 works and grabs the unwelded workpiece and fixture on the right conveying part 3 through the clamping claw, and then the cylinder 42 on the right side works to drive the clamping cylinder 43 to rise and reset, and the X-axial moving part 41 drives the two cylinders 42 and the two The clamping cylinder 43 moves to the left, so that the clamping cylinder 43 on the left side moves to the top of the workpiece that has been inspected on the rotating part 2, and the cylinder 42 on the left side works to drive the clamping cylinder 43 to descend, and the clamping cylinder 43 on the left side works to grab the workpiece and the fixture that have been inspected on the rotating part 2 through the clamping claws, and then the cylinder 42 on the left side works to drive the clamping cylinder 43 to rise and reset, and the X-axis moving part 41 continues to move to the left and moves the unwelded workpiece and the fixture clamped by the clamping cylinder 43 on the right side to the top of the rotating part 2. Since the workpiece that has been inspected on the rotating part 2 has been grabbed by the clamping cylinder 43 on the left side, the rotating part 2 is now The workpiece position of the rotating part 2 is vacant. At this time, the right cylinder 42 works to drive the right clamping cylinder 43 to descend, so that the unwelded workpiece clamped by the right clamping cylinder 43 is moved to the rotating part 2. After the right clamping cylinder 43 cancels the clamping of the workpiece and the fixture, the fixture and the workpiece fixed by the fixture fall into the vacant workpiece position on the rotating part 2. After completing this action, the right cylinder 42 drives the right clamping cylinder 43 to rise and reset, and then the X-axis moving part 41 continues to move to the left and moves the inspected workpiece and fixture clamped by the left clamping cylinder 43 to the top of the conveying part 3 on the left. The left cylinder 42 The work drives the clamping cylinder 43 to descend, and the clamping cylinder 43 cancels the clamping of the workpiece and the fixture. The inspected workpiece and the fixture fixing the workpiece fall on the left conveying part 3 and are transported away. Then the left cylinder 42 works to drive the left clamping cylinder 43 to rise and reset. In this process, the rotating part 2 rotates to move the inspected workpiece in the next workpiece position to the bottom of the loading and unloading unit 4, and then the X-axis moving part 41 moves the moving end and the two cylinders 42 and the two clamping cylinders 43 to the right, so that the clamping cylinder 43 on the right is moved to the top of the conveying part 3 on the right and repeats the above actions to load and unload the workpiece and the fixture.

[0030] like Figure 1 , Figure 4 and Figure 7As shown, the solder paste dispensing unit 5 includes a Y-axial moving part 51 fixedly connected, an X-axial moving part 52 fixedly connected to the moving end of the Y-axial moving part 51, a Z-axial moving part 53 fixedly connected to the moving end of the X-axial moving part 52, a mounting plate 54 fixedly connected to the moving end of the Z-axial moving part 53, a solder paste dispensing assembly 55 fixedly connected to one side of the mounting plate 54, and a CCD camera 56.

[0031] By adopting the above scheme, when the rotating part 2 rotates clockwise to drive the fixture in the workpiece position and the unwelded workpiece fixed in the fixture to move to the bottom of the solder paste dot unit 5, the X-axis moving part 2 52 drives the mounting plate 54, the solder paste dot assembly 55 and the CCD camera 1 56 to move left and right, and the Y-axis moving part 1 51 drives the mounting plate 54, the solder paste dot assembly 55 and the CCD camera 1 56 to move forward and backward, and adjusts the XY axis position of the solder paste dot assembly 55 and the CCD camera 1 56, first moves the CCD camera 1 56 to the top of the unwelded workpiece to locate the solder point of the workpiece, and then moves the solder paste dot assembly 55 to the top of the unwelded workpiece, and finally the Z-axis moving part 1 53 drives the solder paste dot assembly 55 (The solder paste dispensing component 55 is a tin dispensing mechanism, which is an existing component in the welding field, and is usually composed of a solder paste supply part and a tin dispensing part; the solder paste supply part is usually a solder paste storage container, similar to the form of a syringe or a solder paste can, and the solder paste is squeezed out by air pressure or spiral propulsion. For example, in some automated tin dispensing equipment, the solder paste storage container will be connected to an air pressure device to adjust the amount of solder paste extruded by precisely controlling the air pressure; the tin dispensing part is usually a tin dispensing head, and the shape and size of the tin dispensing head vary according to different application scenarios. Common shapes include dots, needles, etc. In some application scenarios that require liquid tin, the tin dispensing head will also have a heating function, which is a mature existing technology and will not be repeated here) descend to tin the unsoldered workpiece.

[0032] like Figure 1 and Figure 3 As shown, the laser welding unit 6 includes an X-axial moving part 3 61 fixedly connected to the upper end of the base 1, a Y-axial moving part 2 62 fixedly connected to the moving end of the X-axial moving part 3 61, a Z-axial moving part 2 63 fixedly connected to the moving end of the Y-axial moving part 2 62, a connecting plate 64 fixedly connected to the moving end of the Z-axial moving part 2 63, a laser welding assembly 65 fixedly connected to one side of the connecting plate 64, and a smoking pipe 66 fixedly connected to the other side of the connecting plate 64.

[0033] By adopting the above scheme, when the rotating part 2 rotates clockwise to drive the fixture in the workpiece position and the workpiece fixed in the fixture and tinned to move to the bottom of the laser welding unit 6, the X-axis moving part 3 61 and the Y-axis moving part 2 62 can drive the laser welding assembly 65 to move left and right and forward and backward. After the XY axis position of the laser welding assembly 65 is adjusted and the laser welding assembly 65 moves to the top of the workpiece, the Z-axis moving part 2 63 works to drive the laser welding assembly 65 (the laser welding assembly 65 is also a common component in the welding field, usually composed of a laser generator and a light source). The laser welding assembly 65 works to perform laser welding on the solder paste on the workpiece, and the smoking pipe 66 is connected to an external pipe, and the pipe is connected to the smoking device. The smoking device works to absorb the welding smoke generated by welding through the smoking pipe 66. Since two laser welding units 6 are provided, when the laser welding unit 6 on the right completes the welding of the workpiece on the right side of the fixture, the rotating part 2 rotates clockwise and drives the fixture to move under the laser welding unit 6 on the left, and the workpiece on the left side of the fixture can be welded through the laser welding unit 6 on the left.

[0034] like Figure 1 and Figure 5 As shown, the detection unit 7 includes a Y-axial moving part 3 71 fixedly connected to the upper end of the base 1, an X-axial moving part 4 72 fixedly connected to the moving end of the Y-axial moving part 3 71, a Z-axial moving part 3 73 fixedly connected to the moving end of the X-axial moving part 4 72, a fixed plate 74 fixedly connected to the moving end of the Z-axial moving part 3 73, a CCD camera 2 75 fixedly connected to one side of the fixed plate 74, a vertical plate vertically fixedly connected to one side of the fixed plate 74, a cylinder 2 76 and a cylinder 3 78 respectively fixedly connected to both sides of the vertical plate, a cutter part 77 fixedly connected to the telescopic end of the cylinder 2 76, and a test contact 79 fixedly connected to the telescopic end of the cylinder 3 78.

[0035] A lifting cylinder 8 is also fixedly connected to the upper end of the base 1, and a through slot 21 is opened in the rotating part 2 for the telescopic end of the lifting cylinder 8 to pass through. When the cylinder 76 drives the cutting part 77 to descend to cut the wire feet at the welding point of the workpiece, the telescopic end of the lifting cylinder 8 extends out from the through slot 21 and fits with the lower end of the clamp to support the bottom of the clamp.

[0036] By setting the above scheme, when the rotating part 2 rotates clockwise to drive the fixture in the workpiece position and the workpiece fixed in the fixture to be welded to move to the bottom of the detection unit 7, the Y-axis moving part 3 71 drives the CCD camera 2 75, the cutter part 77 and the test contact 79 to move forward and backward, and the X-axis moving part 4 72 drives the CCD camera 2 75, the cutter part 77 and the test contact 79 to move left and right, and the XY axis positions of the CCD camera 2 75, the cutter part 77 and the test contact 79 are adjusted. First, the CCD camera 2 75 is moved above the workpiece, and the welding point on the workpiece is detected and positioned by the CCD camera 2 75, and then the cutter part 77 (composed of a fixed tool and a cutter head fixed on the fixed tool) is moved above the welding point, and the fixed plate 74 is driven to descend by the Z-axis moving part 3 73, so that the cutter part 77 is close to the welding point, and the cylinder 2 76 is moved to the top of the workpiece. The work drives the cutter part 77 to descend. At this time, the telescopic end of the lifting cylinder 8 also extends out from the through groove 21 and supports the bottom of the fixture. The enameled wire foot emerging from the welding point is cut off by the cutter head that descends and contacts the workpiece. Then the cylinder 2 76 drives the cutter part 77 to rise and reset, and then the CCD camera 2 75 is moved to the top of the workpiece. The workpiece after foot cutting is detected and the positioning is confirmed by the CCD camera 2 75. Finally, the test contact 79 is moved to the top of the welding point. The cylinder 3 78 drives the test contact 79 to descend. The test contact 79 is a test pen, which is connected to the impedance analyzer. When the test contact 79 contacts the welding point, the impedance detection of the welding point is realized. The rotating part 2 drives the workpiece after foot cutting and impedance detection to rotate clockwise to the bottom of the material taking and discharging unit 4. The material taking and discharging unit 4 takes the workpiece away and puts in a new unwelded workpiece to complete the entire welding process.

[0037] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the present application, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0038] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A stator laser welding machine, comprising a base (1), characterized in that: The upper end of the base (1) is connected to a rotating part (2), and the upper end of the rotating part (2) is connected to a plurality of clamps. The upper end of the base (1) is symmetrically connected to two conveying parts (3) for conveying the clamps. The upper end of the base (1) is also connected to a material taking and placing unit (4) for taking a workpiece from one conveying part (3) and placing it in a clamp, or taking a workpiece from a clamp and placing it on another conveying part (3). The upper end of the base (1) is also symmetrically connected to two laser welding units (6) for laser welding the workpiece in the clamp. The upper end of the base (1) is also connected to a solder paste applying unit (5) for applying solder paste to the workpiece in the clamp and a detection unit (7) for detecting the welding condition of the workpiece.

2. The stator laser welding machine according to claim 1, characterized in that: The material taking and placing unit (4) comprises an X-axis moving part (41) fixedly connected to the upper end of the base (1), two cylinders (42) fixedly connected to the moving end of the X-axis moving part (41), and clamping cylinders (43) respectively fixedly connected to the telescopic ends of the two cylinders (42).

3. The stator laser welding machine according to claim 2, characterized in that: The solder paste dispensing unit (5) comprises a first Y-axis movable part (51) fixedly connected, a second X-axis movable part (52) fixedly connected to the moving end of the first Y-axis movable part (51), a first Z-axis movable part (53) fixedly connected to the moving end of the second X-axis movable part (52), a mounting plate (54) fixedly connected to the moving end of the first Z-axis movable part (53), a solder paste dispensing assembly (55) fixedly connected to one side of the mounting plate (54), and a first CCD camera (56).

4. The stator laser welding machine according to claim 3, characterized in that: The laser welding unit (6) comprises an X-axial moving part three (61) fixedly connected to the upper end of the base (1), a Y-axial moving part two (62) fixedly connected to the moving end of the X-axial moving part three (61), a Z-axial moving part two (63) fixedly connected to the moving end of the Y-axial moving part two (62), a connecting plate (64) fixedly connected to the moving end of the Z-axial moving part two (63), a laser welding assembly (65) fixedly connected to one side of the connecting plate (64), and a smoking pipe (66) fixedly connected to the other side of the connecting plate (64).

5. The stator laser welding machine according to claim 4, characterized in that: The detection unit (7) comprises a Y-axis moving part three (71) fixedly connected to the upper end of the base (1), an X-axis moving part four (72) fixedly connected to the moving end of the Y-axis moving part three (71), a Z-axis moving part three (73) fixedly connected to the moving end of the X-axis moving part four (72), a fixed plate (74) fixedly connected to the moving end of the Z-axis moving part three (73), a CCD camera two (75) fixedly connected to one side of the fixed plate (74), a vertical plate fixedly connected to one side of the fixed plate (74), a cylinder two (76) and a cylinder three (78) fixedly connected to both sides of the vertical plate, respectively, a cutting knife part (77) fixedly connected to the telescopic end of the cylinder two (76), and a test contact (79) fixedly connected to the telescopic end of the cylinder three (78).

6. The stator laser welding machine according to claim 5, characterized in that: A lifting cylinder (8) is also fixedly connected to the upper end of the base (1), and a through slot (21) is provided in the rotating part (2) for the telescopic end of the lifting cylinder (8) to pass through. When the second cylinder (76) drives the cutting part (77) to descend to cut the wire legs at the welding point of the workpiece, the telescopic end of the lifting cylinder (8) extends out from the through slot (21) and fits with the lower end of the clamp to support the bottom of the clamp.

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