A projection welding mechanism with a two-stage positioning function

Abstract

The utility model relates to the technical field of projection welding machine, especially a projection welding mechanism with two -level positioning function, including projection welding machine main part, the bottom fixedly connected with support seat of projection welding machine main part front side, the top fixedly connected with projection welding station of support seat, the centre of projection welding station top fixedly connected with lower electrode stem, the both sides fixedly connected with slide rail of support seat top, the outside of slide rail all is provided with laser positioner, the utility model's advantage lies in: through setting laser positioner in the both sides of support seat, makes it can form mutually perpendicular surface laser at the both sides of projection welding station, and the laser will form two vertical laser lines above projection welding station, adjusts the position of two laser positioners and makes it to lower electrode stem and upper electrode stem, when installing work piece, then can form a vertical laser line at the both sides of work piece, aligns two laser lines the processing projection of work piece, can complete two -level positioning to work piece.

Description

Technical Field

[0001] This utility model relates to the field of projection welding machine technology, and in particular to a projection welding mechanism with a two-stage positioning function. Background Technology

[0002] Projection welding machines are pneumatically pressurized, bearing-guided, and automatically controlled by a microcomputer control box. They feature precise weld point control and good electrode follow-up, and are widely used in multi-point projection welding and spot welding of mechanical parts such as auto parts.

[0003] A positioning mechanism for projection welding in a projection welding machine is disclosed in Chinese patent CN202020180925.X. This positioning mechanism connects the insulating sleeve to the push rod of the lower electrode of the projection welding machine through the boss of the insulating sleeve. The extension and retraction of the insulating sleeve and the welding counting are achieved by using a small cylinder. The automatic extension and retraction of the insulating sleeve greatly reduces the problems of jamming and difficulty in picking up parts caused by high welding current. However, this positioning mechanism for projection welding uses the insulating sleeve to assist the projection welding machine in positioning. The projection welding machine has a fixed shape, and the positioning assistance is suitable for a limited number of workpiece types. It is not suitable for projection welding mechanisms that have a wide variety of projection welding workpieces. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a projection welding mechanism with a two-stage positioning function, which effectively solves the deficiencies of the prior art.

[0005] The purpose of this utility model is achieved through the following technical solution: a projection welding mechanism with a two-stage positioning function, including a projection welding machine body, a support base fixedly connected to the bottom of the front side of the projection welding machine body, a projection welding table fixedly connected to the top of the support base, a lower electrode rod fixedly connected to the center of the top of the projection welding table, a support plate fixedly connected to the top of the front side of the projection welding machine body, an upper electrode rod provided at the bottom of the support plate, slide rails fixedly connected to both sides of the top of the support base, and laser positioning devices provided on the outer sides of the slide rails.

[0006] Optionally, a slide plate is slidably connected to the outer side of the slide rail, and a rotating plate is rotatably connected to the outer side of the slide plate. The top inner side of the rotating plate is fixedly connected to the laser positioning device.

[0007] Optionally, the laser emitted by the laser positioning device is directed inward, the scattered laser emitted by the laser positioning device is planar, and the laser emitted by the laser positioning device is vertical and perpendicular to the slide rail.

[0008] The above technical solution involves setting laser positioning devices on both sides of the support base, enabling them to form mutually perpendicular planar lasers on both sides of the projection welding platform. The lasers will form two vertical laser lines above the projection welding platform. By adjusting the positions of the two laser positioning devices to align with the lower and upper electrode rods, a vertical laser line can be formed on both sides of the workpiece when it is installed. By aligning the two laser lines with the processing protrusions of the workpiece, the secondary positioning of the workpiece can be completed, thereby improving the positioning efficiency of the workpiece during projection welding.

[0009] Optionally, a torsion spring is sleeved in the middle of the rotating shaft of the rotating plate, and the torsion of the torsion spring makes the rotating plate vertically downward.

[0010] The above technical solution is adopted: by setting a torsion spring on the rotating shaft of the rotating plate, the rotating plate keeps rotating vertically downward under the action of torsion, thus avoiding interference with the projection welding of the workpiece after positioning is completed.

[0011] Optionally, a magnetic plate is fixedly connected to the top of the skateboard, the rotating plate is made of iron, and the magnetic force of the magnetic plate on the rotating plate is greater than the torsion force of the torsion spring on the rotating plate.

[0012] The above technical solution is adopted: by setting a magnetic plate above the slide plate, when the rotating plate rotates to a vertically upward state, it can be attracted and fixed in this state by the magnetic plate, which facilitates the laser positioning instrument to perform auxiliary positioning of the workpiece.

[0013] Optionally, a number of compression springs are fixedly connected to the top of the projection welding station, and a lifting plate is fixedly connected to the top of the compression springs. A circular groove is opened in the middle of the lifting plate, and the position of the circular groove corresponds to the position of the lower electrode rod.

[0014] The above technical solution is adopted: by setting a lifting plate supported by a compression spring on the outside of the lower electrode rod, it can support the bottom of the projection welding workpiece. When the bottom of the projection welding workpiece is far from the projection welding point, the lifting plate can be pressed down to adapt to different specifications of projection welding workpieces, so as to realize the support and secondary positioning assistance for projection welding workpieces of different specifications.

[0015] Optionally, a cylinder is fixedly connected to the support plate, the output end of the cylinder is fixedly connected to the upper electrode rod, and both the lower electrode rod and the upper electrode rod are electrically connected to the main body of the projection welding machine.

[0016] This utility model has the following advantages:

[0017] 1. This projection welding mechanism with secondary positioning function uses laser positioning devices on both sides of the support base to form mutually perpendicular planar lasers on both sides of the projection welding table. The lasers will form two vertical laser lines above the projection welding table. By adjusting the positions of the two laser positioning devices to align with the lower and upper electrode rods, a vertical laser line can be formed on both sides of the workpiece when it is installed. By aligning the two laser lines with the processing protrusions of the workpiece, the secondary positioning of the workpiece can be completed, thereby improving the positioning efficiency of the workpiece during projection welding.

[0018] 2. This projection welding mechanism with a two-stage positioning function uses a torsion spring on the rotating shaft of the rotating plate to keep the rotating plate rotating vertically downward under the action of torque, thus avoiding interference with the projection welding of the workpiece after positioning is completed. By setting a magnetic plate above the slide plate, when the rotating plate rotates to the vertically upward state, it can be attracted and fixed in this state by the magnetic plate, which facilitates the laser positioning instrument to perform auxiliary positioning of the workpiece.

[0019] 3. The projection welding mechanism with secondary positioning function has a lifting plate supported by a compression spring on the outside of the lower electrode rod, which can support the bottom of the projection welding workpiece. When the bottom of the projection welding workpiece is far from the projection welding point, the lifting plate can be pressed down to adapt to different specifications of projection welding workpieces, so as to realize the support and secondary positioning assistance for projection welding workpieces of different specifications. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B;

[0023] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0024] Figure 5 This utility model Figure 4 Enlarged structural diagram at point C;

[0025] Figure 6 This utility model Figure 4 A magnified structural diagram at point D.

[0026] In the diagram: 1-Main body of projection welding machine, 2-Support base, 3-Projection welding table, 4-Lower electrode rod, 5-Support plate, 6-Upper electrode rod, 7-Slide rail, 8-Laser positioning device, 9-Slide plate, 10-Rotating plate, 11-Torsion spring, 12-Magnetic plate, 13-Compression spring, 14-Lifting plate, 15-Circular groove, 16-Cylinder. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0028] like Figures 1 to 6 As shown, a projection welding mechanism with a two-stage positioning function includes a projection welding machine body 1, a support base 2 fixedly connected to the bottom of the front side of the projection welding machine body 1, a projection welding table 3 fixedly connected to the top of the support base 2, a lower electrode rod 4 fixedly connected to the center of the top of the projection welding table 3, a support plate 5 fixedly connected to the top of the front side of the projection welding machine body 1, an upper electrode rod 6 provided at the bottom of the support plate 5, slide rails 7 fixedly connected to both sides of the top of the support base 2, and laser positioning instruments 8 provided on the outer side of each slide rail 7.

[0029] Example 1: A slide plate 9 is slidably connected to the outer side of the slide rail 7, and a rotating plate 10 is rotatably connected to the outer side of the slide plate 9. The top inner side of the rotating plate 10 is fixedly connected to the laser positioning device 8.

[0030] Example 2: The laser emitted by the laser positioning device 8 is directed inward, and the scattered laser emitted by the laser positioning device 8 is planar. The laser emitted by the laser positioning device 8 is vertical and perpendicular to the slide rail 7. By setting the laser positioning devices 8 on both sides of the support base 2, they can form mutually perpendicular planar lasers on both sides of the projection welding table 3. The laser will form two vertical laser lines above the projection welding table 3. Adjust the position of the two laser positioning devices 8 to align with the lower electrode rod 4 and the upper electrode rod 6. When the workpiece is installed, a vertical laser line can be formed on both sides of the workpiece. Align the two laser lines with the processing protrusions of the workpiece to complete the secondary positioning of the workpiece and improve the positioning efficiency of the workpiece during projection welding.

[0031] Example 3: A torsion spring 11 is sleeved in the middle of the rotating shaft of the rotating plate 10. The torsion of the torsion spring 11 makes the rotating plate 10 vertically downward. By setting the torsion spring 11 on the rotating shaft of the rotating plate 10, the rotating plate 10 maintains vertical downward rotation under the action of torsion, thus avoiding interference with the projection welding of the workpiece after positioning is completed.

[0032] Example 4: A magnetic plate 12 is fixedly connected to the top of the slide plate 9. The rotating plate 10 is made of iron. The magnetic force of the magnetic plate 12 on the rotating plate 10 is greater than the torsion force of the torsion spring 11 on the rotating plate 10. By setting the magnetic plate 12 above the slide plate 9, when the rotating plate 10 rotates to the vertically upward state, it can be attracted and fixed in this state by the magnetic plate 12, which facilitates the laser positioning instrument 8 to perform auxiliary positioning of the workpiece.

[0033] Example 5: Several compression springs 13 are fixedly connected to the top of the projection welding station 3. A lifting plate 14 is fixedly connected to the top of the compression springs 13. A circular groove 15 is opened in the middle of the lifting plate 14. The position of the circular groove 15 corresponds to the position of the lower electrode rod 4. By setting the lifting plate 14 supported by the compression springs 13 on the outside of the lower electrode rod 4, it can support the bottom of the projection welding workpiece. When the bottom of the projection welding workpiece is far from the projection welding point, the lifting plate 14 can be pressed down to adapt to different specifications of projection welding workpieces, so as to realize the support and secondary positioning assistance for projection welding workpieces of different specifications.

[0034] Example 6: A cylinder 16 is fixedly connected to the support plate 5. The output end of the cylinder 16 is fixedly connected to the upper electrode rod 6. The lower electrode rod 4 and the upper electrode rod 6 are both electrically connected to the projection welding machine body 1.

[0035] The working principle of this utility model is as follows:

[0036] S1. The laser will form two vertical laser lines above the projection welding station 3. Adjust the positions of the two laser positioning instruments 8 to align with the lower electrode rod 4 and the upper electrode rod 6. When the workpiece is installed, a vertical laser line can be formed on both sides of the workpiece. Align the two laser lines with the processing protrusions of the workpiece to complete the secondary positioning of the workpiece and improve the positioning efficiency of the workpiece during projection welding.

[0037] S2, the lifting plate 14 can support the bottom of the projection welded workpiece. When the bottom of the projection welded workpiece is far from the projection weld point, the lifting plate 14 can be pressed down to adapt to different specifications of projection welded workpieces, so as to achieve support and secondary positioning assistance for projection welded workpieces of different specifications.

[0038] Compared with the prior art, the present invention has the following advantages:

[0039] 1. This projection welding mechanism with secondary positioning function, by setting laser positioning instruments 8 on both sides of the support base 2, can form mutually perpendicular planar lasers on both sides of the projection welding table 3. The lasers will form two vertical laser lines above the projection welding table 3. By adjusting the positions of the two laser positioning instruments 8 to align with the lower electrode rod 4 and the upper electrode rod 6, when the workpiece is installed, a vertical laser line can be formed on both sides of the workpiece. By aligning the two laser lines with the processing protrusions of the workpiece, the secondary positioning of the workpiece can be completed, thereby improving the positioning efficiency of the workpiece during projection welding.

[0040] 2. The projection welding mechanism with secondary positioning function has a torsion spring 11 set on the rotating shaft of the rotating plate 10. The rotating plate 10 keeps rotating vertically downward under the action of torsion, so as to avoid interference with the projection welding of the workpiece after positioning is completed. A magnetic plate 12 is set above the slide plate 9. When the rotating plate 10 rotates to the vertical upward state, it can be attracted and fixed in this state by the magnetic plate 12, which facilitates the laser positioning instrument 8 to perform auxiliary positioning of the workpiece.

[0041] 3. The projection welding mechanism with secondary positioning function has a lifting plate 14 supported by a compression spring 13 on the outside of the lower electrode rod 4, which can support the bottom of the projection welding workpiece. When the bottom of the projection welding workpiece is far from the projection welding point, the lifting plate 14 can be pressed down to adapt to different specifications of projection welding workpieces, so as to realize the support and secondary positioning assistance for projection welding workpieces of different specifications.

Claims

1. A projection welding mechanism with a two-stage positioning function, characterized in that: The system includes a projection welding machine body (1), a support base (2) is fixedly connected to the bottom of the front side of the projection welding machine body (1), a projection welding table (3) is fixedly connected to the top of the support base (2), a lower electrode rod (4) is fixedly connected to the center of the top of the projection welding table (3), a support plate (5) is fixedly connected to the top of the front side of the projection welding machine body (1), an upper electrode rod (6) is provided at the bottom of the support plate (5), slide rails (7) are fixedly connected to both sides of the top of the support base (2), and laser positioning instruments (8) are provided on the outer side of the slide rails (7).

2. The projection welding mechanism with secondary positioning function according to claim 1, characterized in that: The slide rail (7) is slidably connected to a slide plate (9), and the slide plate (9) is rotatably connected to a rotating plate (10). The top inner side of the rotating plate (10) is fixedly connected to the laser positioning device (8).

3. The projection welding mechanism with secondary positioning function according to claim 2, characterized in that: The laser emitted by the laser positioning device (8) is directed inwards, the scattered laser emitted by the laser positioning device (8) is planar, and the laser emitted by the laser positioning device (8) is vertical and perpendicular to the slide rail (7).

4. The projection welding mechanism with secondary positioning function according to claim 3, characterized in that: A torsion spring (11) is sleeved in the middle of the rotating shaft of the rotating plate (10), and the torsion of the torsion spring (11) makes the rotating plate (10) vertically downward.

5. A projection welding mechanism with a two-stage positioning function according to claim 4, characterized in that: A magnetic plate (12) is fixedly connected to the top of the slide plate (9). The rotating plate (10) is made of iron. The magnetic force of the magnetic plate (12) on the rotating plate (10) is greater than the torque of the torsion spring (11) on the rotating plate (10).

6. The projection welding mechanism with secondary positioning function according to claim 5, characterized in that: The top of the projection welding station (3) is fixedly connected to several compression springs (13), and the top of the compression springs (13) is fixedly connected to a lifting plate (14). A circular groove (15) is opened in the middle of the lifting plate (14), and the position of the circular groove (15) corresponds to the position of the lower electrode rod (4).

7. A projection welding mechanism with a two-stage positioning function according to claim 6, characterized in that: A cylinder (16) is fixedly connected to the support plate (5). The output end of the cylinder (16) is fixedly connected to the upper electrode rod (6). The lower electrode rod (4) and the upper electrode rod (6) are both electrically connected to the projection welding machine body (1).

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