Workpiece positioning device and laser welding apparatus

Abstract

The utility model discloses an embodiment provides a kind of workpiece positioning device and laser welding equipment, it is related to laser welding technical field.The workpiece positioning device and laser welding equipment, including welding platform, the welding platform one side is fixed with vertical rail, first positioning assembly is slidably connected in vertical rail, and reciprocating screw rod two that is threadedly cooperated with first positioning assembly is also rotationally arranged in vertical rail, by driving reciprocating screw rod two rotation, drive first positioning assembly and move along vertical rail, the side rotationally connected of first positioning assembly has second positioning assembly.The utility model realizes the adaptive positioning and clamping of multiple angles, multiple sizes to the inclined welding workpiece by rotatable second positioning assembly and the adjustable positioning rod driven by its built-in bidirectional screw rod, is fixed to the fixing of first positioning assembly to the workpiece of laying flat, effectively guarantee the spatial assembly accuracy of the work of different planes, improve the path accuracy and joint quality consistency of laser welding.

Description

Technical Field

[0001] This utility model relates to the field of laser welding technology, and in particular to a workpiece positioning device and laser welding equipment. Background Technology

[0002] In practical applications of laser welding equipment, for non-planar joints consisting of flat workpieces and inclined workpieces, the assembly process must ensure that the weld edge of the inclined workpiece maintains a precise spatial relationship with the surface of the main planar workpiece.

[0003] Currently, most workpiece positioning devices adopt a fixed structure or are general-purpose fixtures that can only clamp workpieces on a single plane. In actual operation, in order to achieve the positioning of tilted workpieces, these general-purpose fixtures usually require manual adjustment and fixation with the help of auxiliary pads and positioning pins. Every time the workpiece type or tilt angle is changed, the pad thickness must be reselected or the template must be replaced. Repeat positioning accuracy is difficult to guarantee. Therefore, traditional positioning devices cannot meet the actual needs of high precision and repeatable assembly for non-planar tilted welding. Utility Model Content

[0004] To achieve the above objectives, this application provides a workpiece positioning device, including a welding table. A vertical rail is fixedly installed on one side of the welding table, and a first positioning component is slidably connected inside the vertical rail. A reciprocating screw two, which is threadedly engaged with the first positioning component, is also rotatably installed inside the vertical rail. By driving the reciprocating screw two to rotate, the first positioning component is driven to move up and down along the vertical rail. A second positioning component is rotatably connected to one side of the first positioning component. The first positioning component is used to clamp and fix a workpiece placed flat on the welding table, and the second positioning component is used to position another workpiece that needs to be welded at an inclined angle to the flat workpiece.

[0005] Preferably, the first positioning component includes a positioning plate that slides within a vertical rail, the positioning plate having an elongated groove, and two positioning rods that slide within the elongated groove.

[0006] Preferably, a bidirectional lead screw is rotatably installed inside the long groove, and the two ends of the bidirectional lead screw are respectively threadedly connected to two positioning rods.

[0007] Preferably, a U-shaped frame is fixedly installed on the upper side of the positioning plate, and an electric push rod is installed on the U-shaped frame. The piston end of the electric push rod is connected to a suction cup, and the suction cup is located in the through hole opened in the positioning plate.

[0008] Preferably, one end of the positioning plate is rotatably provided with a rotating rod, and one end of the rotating rod is fixedly connected with a gear.

[0009] Preferably, the positioning plate has a groove, a slider is slidably disposed in the groove, a limit rod is fixedly disposed on the slider, the limit rod is inserted into the tooth groove of the gear, and a spring is connected between one side of the slider and the inner wall of the groove.

[0010] Preferably, the second positioning component includes a positioning plate two with one end fixedly connected to the rotating rod, and a long groove two is provided on one side of the positioning plate two, and two positioning rods two are slidably arranged in the long groove two.

[0011] Preferably, a bidirectional lead screw is rotatably installed inside the long groove, and the bidirectional lead screw is threadedly connected to two positioning rods.

[0012] Preferably, in another aspect, this application also provides a laser welding device, including the workpiece positioning device described in any one of the above, including a movable groove opened on the welding table, a column slidably arranged in the movable groove, an adjustment seat rotatably arranged on one side of the column, and a laser welding gun arranged at one end of the adjustment seat.

[0013] Preferably, a reciprocating lead screw is rotatably installed in the moving slot, the reciprocating lead screw is threadedly connected to the bottom of the column, and one end of the reciprocating lead screw is connected to the output shaft of the motor.

[0014] The present invention provides a workpiece positioning device and laser welding equipment, which, compared with the prior art, have the following advantages: 1. This utility model achieves precise positioning of another workpiece to be welded at an inclined angle to the flat workpiece by setting a second positioning component that can be rotatably connected to the first positioning component. In the actual welding process, when non-planar welding is required, the second positioning component can rotate around one end of the positioning plate to the required angle under the drive of the rotating rod, and the angle is locked by the cooperation of the limiting rod and the gear, ensuring that the positioning process is stable and reliable. This structure breaks through the limitation of traditional fixtures that are only suitable for assembly on the same plane or at a fixed angle, improves the flexibility of workpiece assembly, and repeated assembly will not affect its accuracy.

[0015] 2. This utility model integrates two positioning rods driven by a bidirectional lead screw in the second positioning component, which can move towards or away from each other in the long groove, thereby adapting to inclined workpieces of different widths and achieving clamping and positioning. Combined with the fixing effect of the first positioning component on the main workpiece, this device can simultaneously complete the spatial assembly and clamping of the inclined workpiece, ensuring that the two form an accurate spatial relative position relationship before welding, thus improving the path accuracy and joint quality consistency during laser welding gun operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a second schematic diagram of the overall structure of an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the first positioning component and the second positioning component according to an embodiment of the present utility model; Figure 4 This is a schematic diagram showing the disassembled first positioning component and second positioning component according to an embodiment of the present utility model; Figure 5 This is a schematic diagram of the structure of the first positioning component according to an embodiment of the present utility model; Figure 6 This is an embodiment of the present utility model. Figure 5 A schematic diagram of the structure at point A; Figure 7 This is a schematic diagram of the structure of the second positioning component according to an embodiment of the present utility model; Figure 8 This is a schematic diagram of the laser welding gun and other mechanisms in an embodiment of this utility model.

[0018] icon: 1. Welding table; 2. Moving groove; 3. Reciprocating lead screw one; 4. Column; 5. Adjusting seat; 6. Laser welding gun; 7. First positioning assembly; 71. Positioning plate one; 711. Slide groove; 712. Slider; 713. Limiting rod; 714. Spring; 72. U-shaped frame; 73. Electric push rod; 74. Suction cup; 75. Long groove one; 76. Bidirectional lead screw one; 77. Positioning rod one; 78. Rotating rod; 781. Gear; 8. Second positioning assembly; 81. Positioning plate two; 82. Long groove two; 83. Positioning rod two; 84. Bidirectional lead screw two; 9. Vertical rail; 91. Reciprocating lead screw two. Detailed Implementation

[0019] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0020] Please refer to Figures 1 to 4This utility model embodiment provides a workpiece positioning device, including a welding table 1. A vertical rail 9 is fixedly provided on one side of the welding table 1. The vertical rail 9 extends in the vertical direction and is used to provide guidance and installation foundation for the first positioning component 7.

[0021] A first positioning component 7 is slidably connected inside the vertical rail 9. The first positioning component 7 can slide up and down along the length of the vertical rail 9. A reciprocating screw 91 is also rotatably installed inside the vertical rail 9. The reciprocating screw 91 is threadedly connected to the first positioning component 7. By manually or by an external drive source such as a motor to drive the reciprocating screw 91 to rotate, the first positioning component 7 can be driven to move up and down precisely inside the vertical rail 9, so as to achieve height adjustment and thus adapt to the positioning needs of workpieces with different thicknesses or installation heights.

[0022] like Figure 5 As shown, the first positioning component 7 includes a positioning plate 71, which is a plate-shaped structure that is slidably fitted in the vertical rail 9 and threadedly connected to the reciprocating lead screw 91. It serves as the main support for the entire first positioning component 7. The positioning plate 71 has a long groove 75 that extends horizontally. Two positioning rods 77 are slidably arranged inside the long groove 75. The two positioning rods 77 can move relative to each other in the long groove 75 along the length of the groove, and are used to clamp the two sides of the workpiece placed flat on the welding table 1.

[0023] A bidirectional lead screw 76 is rotatably installed inside the long slot 75. The threaded section of the bidirectional lead screw 76 includes two sections with opposite rotation directions, which are threadedly connected to two positioning rods 77 respectively. When the bidirectional lead screw 76 rotates, the two positioning rods 77 can move towards or away from each other, realizing adaptive clamping of workpieces of different widths, and improving the versatility and positioning accuracy of the device.

[0024] A U-shaped frame 72 is fixedly installed on the upper side of the positioning plate 71. The opening of the U-shaped frame 72 faces upward, and an electric push rod 73 is installed on its top. The piston rod of the electric push rod 73 extends downward, and its end is connected to a suction cup 74. A through hole is opened on the positioning plate 71 corresponding to the position of the suction cup 74. The suction cup 74 can extend downward through the through hole. During the clamping process, the electric push rod 73 drives the suction cup 74 to move downward, adsorbing the upper surface of the workpiece, forming multi-point constraint, effectively preventing the workpiece from shifting or vibrating during the welding process, and further improving the positioning stability.

[0025] One end of the positioning plate 71 is rotatably mounted with a rotating rod 78 via a rotating shaft. The rotating rod 78 can rotate around the rotating shaft in a vertical plane. One end of the rotating rod 78 is connected to the positioning plate 71, and the other end is fixedly connected to a second positioning component 8. A gear 781 is also fixedly connected to one end of the rotating rod 78. The gear 781 rotates synchronously with the rotating rod 78. like Figure 6As shown, a groove 711 is provided on the positioning plate 71. The groove 711 extends perpendicular to the rotation direction of the rotating rod 78. A slider 712 is slidably arranged inside the groove. A limit rod 713 is fixedly installed on the slider 712. The limit rod 713 can be inserted into the tooth groove of the gear 781 to lock the rotation angle of the rotating rod 78. A spring 714 is connected between one side of the slider 712 and the inner wall of the groove 711. The spring 714 provides elastic preload, so that the limit rod 713 is normally engaged with the gear 781 to prevent the rotating rod 78 from rotating accidentally. When the angle needs to be adjusted, the slider 712 can be manually pushed to overcome the force of the spring 714, so that the limit rod 713 disengages from the gear 781. After the angle adjustment is completed, it automatically resets and locks, ensuring reliable positioning.

[0026] like Figure 7 As shown, the second positioning component 8 includes a positioning plate 81. One end of the positioning plate 81 is fixedly connected to the rotating rod 78 and rotates together with the rotating rod 78. A long groove 82 is provided on one side of the positioning plate 81. The long groove 82 extends in the horizontal direction and two positioning rods 83 are slidably arranged in it for clamping another workpiece that needs to be welded at an inclined angle to the flat workpiece.

[0027] A bidirectional lead screw 84 is rotatably installed inside the long slot 82. The two ends of the bidirectional lead screw 84 are threadedly connected to two positioning rods 83 respectively. By rotating the bidirectional lead screw 84, the two positioning rods 83 can be driven to move towards or away from each other, thereby adapting to inclined workpieces of different widths and achieving clamping and positioning. This structure enables the second positioning component 8 to have size adjustment capability, enhancing its adaptability to various workpieces.

[0028] On the other hand, such as Figure 8 As shown, this application also provides a laser welding device for workpiece positioning, including a welding table 1 with a movable groove 2 extending horizontally, a column 4 slidably disposed in the movable groove 2, the bottom of the column 4 slidingly engaging with the movable groove 2, an adjustment seat 5 rotatably disposed on one side of the column 4, the adjustment seat 5 being rotatable around a vertical axis or an inclined axis for adjusting the spatial posture of a laser welding gun 6, and a laser welding gun 6 fixedly disposed at one end of the adjustment seat 5 for performing welding operations.

[0029] A reciprocating screw 3 is rotatably installed inside the moving groove 2. The reciprocating screw 3 is threadedly connected to the bottom of the column 4. One end of the reciprocating screw 3 is connected to the output shaft of the motor. By driving the reciprocating screw 3 to rotate through the motor, the column 4 can be moved back and forth along the moving groove 2, thereby adjusting the position of the laser welding gun 6 in the horizontal direction, realizing the automatic movement of the welding path, and improving the degree of welding automation and trajectory accuracy.

[0030] In summary, firstly, the flat workpiece to be welded is placed on the welding table 1. The two positioning rods 77 are moved towards each other by driving the bidirectional lead screw 76 to clamp the workpiece laterally. At the same time, the electric push rod 73 is activated to push the suction cup 74 down to adsorb the upper surface of the workpiece, forming multi-point fixation to prevent displacement caused by thermal deformation or vibration during the welding process. Then, the workpiece to be tilted for welding is placed on the positioning plate 81 of the second positioning component 8. The slider 712 is manually pushed to disengage the limiting rod 713 from the gear 781. The rotating rod 78 is rotated to the required welding angle. After releasing the slider 712, the limiting rod 713 is reinserted into the gear 781 groove under the action of the spring 714 to complete the angle locking. Next, the bidirectional lead screw 84 is rotated to drive the two positioning rods 83 to move and clamp and fix the tilted workpiece. Finally, the laser welding equipment is started.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A workpiece positioning device, comprising a welding table (1), characterized in that: A vertical rail (9) is fixedly installed on one side of the welding table (1). A first positioning component (7) is slidably connected inside the vertical rail (9). A reciprocating screw (91) that is threadedly engaged with the first positioning component (7) is also rotatably installed inside the vertical rail (9). By driving the reciprocating screw (91) to rotate, the first positioning component (7) is driven to move up and down along the vertical rail (9). A second positioning component (8) is rotatably connected to one side of the first positioning component (7). The first positioning component (7) is used to clamp and fix the workpiece that is placed flat on the welding table (1). The second positioning component (8) is used to position another workpiece that needs to be welded at an angle to the flat workpiece.

2. The workpiece positioning device according to claim 1, characterized in that: The first positioning component (7) includes a positioning plate (71) that slides in the vertical rail (9). The positioning plate (71) has a long groove (75) and two positioning rods (77) that slide in the long groove (75).

3. The workpiece positioning device according to claim 2, characterized in that: A bidirectional lead screw (76) is rotatably installed inside the long groove (75), and the two ends of the bidirectional lead screw (76) are threadedly connected to two positioning rods (77).

4. The workpiece positioning device according to claim 3, characterized in that: A U-shaped frame (72) is fixedly installed on the upper side of the positioning plate (71). An electric push rod (73) is installed on the U-shaped frame (72). The piston end of the electric push rod (73) is connected to the suction cup (74). The suction cup (74) is located in the through hole opened in the positioning plate (71).

5. The workpiece positioning device according to claim 4, characterized in that: One end of the positioning plate (71) is rotatably provided with a rotating rod (78), and one end of the rotating rod (78) is fixedly connected with a gear (781).

6. The workpiece positioning device according to claim 5, characterized in that: The positioning plate (71) is provided with a sliding groove (711), and a slider (712) is slidably arranged in the sliding groove (711). A limit rod (713) is fixedly arranged on the slider (712). The limit rod (713) is inserted into the tooth groove of the gear (781). A spring (714) is connected between one side of the slider (712) and the inner wall of the sliding groove (711).

7. The workpiece positioning device according to claim 1, characterized in that: The second positioning component (8) includes a positioning plate (81) with one end fixedly connected to the rotating rod (78). A long groove (82) is provided on one side of the positioning plate (81), and two positioning rods (83) are slidably arranged in the long groove (82).

8. The workpiece positioning device according to claim 7, characterized in that: A bidirectional lead screw (84) is rotatably installed inside the long groove (82), and the bidirectional lead screw (84) is threadedly connected to two positioning rods (83).

9. A laser welding apparatus, comprising the workpiece positioning device according to any one of claims 1-8, characterized in that: It includes a movable groove (2) opened on the welding table (1), a column (4) is slidably arranged in the movable groove (2), an adjustment seat (5) is rotatably arranged on one side of the column (4), and a laser welding gun (6) is arranged at one end of the adjustment seat (5).

10. The laser welding equipment according to claim 9, characterized in that: A reciprocating screw (3) is rotatably installed inside the moving groove (2). The reciprocating screw (3) is threadedly connected to the bottom of the column (4), and one end of the reciprocating screw (3) is connected to the output shaft of the motor.

Images