Automobile part spot welding machine

Abstract

According to the technical scheme, the automobile part spot welding machine is characterized in that the automobile part spot welding machine comprises a machine base, a workbench, an upper electrode, a lower electrode, an air cylinder, a nut electrode and a positioning pin, the workbench is connected to one side of the machine base, the air cylinder is connected to one side of the machine base, the upper electrode can be driven by the air cylinder to ascend and descend, and the lower electrode can be driven by the positioning pin to ascend and descend. By means of rotation of the three rotating strips, the three rotating wheels can be attached to a nut and apply extrusion force to the nut, the circle center of the nut is aligned with the circle center of a positioning pin, the circle center of the positioning pin and the circle center of the nut are located on the same center line, and therefore the nut can be accurately positioned. And meanwhile, a first connecting rod and a second connecting rod are arranged, so that the rotating stability of the rotating strip is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to a spot welding machine for automobile accessories. Background Art

[0002] Auto parts are the various units that make up the whole car and a kind of product that serves the car. There are many kinds of auto parts. With the improvement of people's living standards, people's consumption of cars is increasing, and the market for auto parts is becoming larger and larger. When processing auto parts, welding is an indispensable link and it is also very important.

[0003] In the prior art, before spot welding an automobile part and a nut using a spot welding machine, the user usually manually holds the automobile part and places the part to be welded on the locating pin of the nut electrode, then puts the nut on the locating pin, and then welds the nut and the automobile part. However, when the nut is put on the locating pin, it is very likely that the nut is not on the same center line as the center of the locating pin, resulting in eccentricity between the locating pin and the nut, which affects the spot welding. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a spot welding machine for automobile parts, which solves the problem that the eccentricity of the positioning pin and the nut affects the spot welding.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A spot welding machine for automobile parts comprises: a machine base, a workbench, an upper electrode, a lower electrode, a cylinder, a nut electrode and a positioning pin, wherein the workbench is connected to one side of the machine base, the cylinder is connected to one side of the machine base, the upper electrode can be lifted up and down driven by the cylinder, the lower electrode is connected to the workbench, the top surface of the lower electrode is connected to the nut electrode, the inside of the nut electrode is connected to the positioning pin, the upper electrode corresponds to the lower electrode in position, here, the machine base, the workbench, the upper electrode and the lower electrode, the cylinder all adopt the structure of the existing ordinary spot welding machine, which are all existing technologies and will not be elaborated here, the center calibration mechanism, the center calibration mechanism is arranged on the top surface of the nut electrode, and is used to align the positioning pin and the center of the nut.

[0007] Preferably, the center calibration mechanism includes: a first fixing ring, the first fixing ring is connected to the top surface of the nut electrode, the top surface of the first fixing ring is connected to a plurality of fixing rods, the top surface of the first fixing ring is provided with a second fixing ring, the first fixing ring is connected to the second fixing ring through the fixing rods, the top surface of the second fixing ring is connected to a plurality of driving motors, three rotating bars are provided inside the first and second fixing rings, the driving shaft of the driving motor passes through the second fixing ring and is connected to the inside of the rotating bar, the other end of the rotating bar is connected to a connecting rod, and the outer circular wall surface of the connecting rod is rotatably connected to a rotating wheel.

[0008] Preferably, the bottom surface of the rotating bar is connected with a rotating shaft, the top surface of the first fixing ring is provided with a plurality of fixing grooves, and the rotating shaft corresponds to the positions of the fixing grooves.

[0009] Preferably, a bearing is sleeved inside the fixing groove, and an inner ring of the bearing is fixedly sleeved with the rotating shaft.

[0010] Preferably, one side of the rotating bar is rotatably connected to a first connecting rod, and the inside of the first connecting rod is rotatably connected to a second connecting rod.

[0011] Preferably, the bottom surface of the second connecting rod is connected to a supporting rod, and the supporting rod is fixedly connected to the first fixing ring.

[0012] In summary, the utility model mainly has the following beneficial effects:

[0013] Through the set nut electrode, the staff can place the auto parts on the nut electrode and put the nut on the locating pin. At this time, the driving shaft of the driving motor rotates to drive the rotating bar to rotate, so that the three rotating bars and the nut are gradually approached until the rotating wheel is attached to the nut. As the rotating bar rotates, the three rotating wheels give the nut an extrusion force, so that the center of the nut is aligned with the center of the locating pin, so that the center of the locating pin and the nut are on the same center line, preventing the nut and the locating pin from being eccentric. At the same time, when the rotating bar rotates, the rotating bar will drive the rotating shaft to rotate inside the bearing, through the bearing The stability of the rotation of the rotating shaft and the rotating bar can be improved, and when the rotating bar rotates, the first connecting rod and the second connecting rod will be driven to rotate. The stability of the movement of the rotating bar can be further improved through the first connecting rod and the second connecting rod. Compared with the prior art, the present application rotates the three rotating bars so that the three rotating wheels can fit the nut and give the nut an extrusion force, so that the center of the nut and the locating pin are aligned, and the center of the locating pin and the nut are located on the same center line, preventing the nut and the locating pin from being eccentric, avoiding affecting the spot welding work, and at the same time, the first connecting rod and the second connecting rod are provided to further increase the stability of the rotation of the rotating bar. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 The utility model Figure 1 Schematic diagram of the local structure at A in the middle;

[0016] Figure 3 This is an exploded view of the first fixing ring structure of the utility model;

[0017] Figure 4 The utility model Figure 3 Schematic diagram of the local structure at point B.

[0018] Figure numerals: 1. base; 2. workbench; 3. upper electrode; 4. lower electrode; 5. cylinder; 6. nut electrode; 7. positioning pin; 8. first fixing ring; 9. fixing rod; 10. second fixing ring; 11. driving motor; 12. rotating bar; 13. connecting rod; 14. rotating wheel; 15. rotating shaft; 16. fixing groove; 17. bearing; 18. first connecting rod; 19. second connecting rod; 20. supporting rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Embodiment 1

[0021] refer to Figure 1-Figure 4A spot welding machine for automobile parts includes: a machine base 1, a workbench 2, an upper electrode 3, a lower electrode 4, a cylinder 5, a nut electrode 6 and a positioning pin 7. The workbench 2 is connected to one side of the machine base 1, and the cylinder 5 is connected to one side of the machine base 1. The upper electrode 3 can be lifted up and down under the drive of the cylinder 5. The lower electrode 4 is connected to the workbench 2. The top surface of the lower electrode 4 is connected with the nut electrode 6. The inside of the nut electrode 6 is connected with the positioning pin 7. The upper electrode 3 corresponds to the lower electrode 4. Here, the machine base 1, the workbench 2, the upper electrode 3 and the lower electrode 4, and the cylinder 5 all adopt the structure of the existing ordinary spot welding machine. These are all existing technologies and will not be repeated here. The top surface of the nut electrode 6 is provided with a center calibration mechanism for aligning the positioning pin 7 with the center of the nut. The center calibration mechanism includes: a first fixed ring 8, the first fixed ring 8 is connected to the top surface of the nut electrode 6, the top surface of the first fixed ring 8 is connected to a plurality of fixed rods 9, the top surface of the first fixed ring 8 is provided with a second fixed ring 10, the first fixed ring 8 is connected to the second fixed ring 10 through the fixed rods 9, the top surface of the second fixed ring 10 is connected with a plurality of drive motors 11, the model of the drive motor 11 is selected according to actual needs, and it is sufficient to meet the work, three rotating bars 12 are provided inside the first fixed ring 8 and the second fixed ring 10, the driving shaft of the drive motor 11 passes through the second fixed ring 10 and is connected to the inside of the rotating bar 12, the other end of the rotating bar 12 is connected to the inside of the connecting rod 13, and the outer circular wall surface of the connecting rod 13 is rotatably connected to a rotating wheel 14.

[0022] By setting the nut electrode 6, the staff can place the automobile parts on the nut electrode 6 and put the nut on the positioning pin 7. At this time, the driving shaft of the driving motor 11 rotates to drive the rotating bar 12 to rotate, so that the three rotating bars 12 and the nut are gradually approached until the rotating wheel 14 is attached to the nut. As the rotating bar 12 rotates, the three rotating wheels 14 give the nut an extrusion force, so that the center of the nut is aligned with the center of the positioning pin 7, so that the center of the positioning pin 7 and the center of the nut are on the same center line, preventing the nut and the positioning pin 7 from being eccentric.

[0023] Embodiment 2

[0024] Based on the above embodiment 1, reference Figure 3 and Figure 4 The bottom surface of the rotating bar 12 is connected to a rotating shaft 15, and a plurality of fixed grooves 16 are opened on the top surface of the first fixed ring 8. The rotating shaft 15 corresponds to the fixed groove 16 in position. A bearing 17 is sleeved inside the fixed groove 16. The inner ring of the bearing 17 is fixedly sleeved with the rotating shaft 15. A first connecting rod 18 is rotatably connected to one side of the rotating bar 12. A second connecting rod 19 is rotatably connected inside the first connecting rod 18. A support rod 20 is connected to the bottom surface of the second connecting rod 19, and the support rod 20 is fixedly connected to the first fixed ring 8.

[0025] By means of the provided bearing 17, when the rotating bar 12 rotates, the rotating bar 12 will drive the rotating shaft 15 to rotate inside the bearing 17. The bearing 17 can improve the rotation stability of the rotating shaft 15 and the rotating bar 12. When the rotating bar 12 rotates, the first connecting rod 18 and the second connecting rod 19 will be driven to rotate. The first connecting rod 18 and the second connecting rod 19 can further improve the rotation stability of the rotating bar 12.

[0026] Although embodiments of the present invention 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 invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spot welding machine for automobile parts, include: A machine base (1), a workbench (2), an upper electrode (3), a lower electrode (4), a cylinder (5), a nut electrode (6) and a positioning pin (7), characterized in that the workbench (2) is connected to one side of the machine base (1), the cylinder (5) is connected to one side of the machine base (1), the upper electrode (3) can be lifted up and down under the drive of the cylinder (5), the lower electrode (4) is connected to the workbench (2), the top surface of the lower electrode (4) is connected to the nut electrode (6), the inside of the nut electrode (6) is connected to the positioning pin (7), and the upper electrode (3) corresponds to the position of the lower electrode (4); A circle center calibration mechanism is provided on the top surface of the nut electrode (6) and is used to align the positioning pin (7) with the circle center of the nut.

2. The automotive parts spot welding machine according to claim 1, It is characterized in that The center calibration mechanism comprises: a first fixing ring (8), the first fixing ring (8) is connected to the top surface of the nut electrode (6), the top surface of the first fixing ring (8) is connected to a plurality of fixing rods (9), the top surface of the first fixing ring (8) is provided with a second fixing ring (10), the first fixing ring (8) is connected to the second fixing ring (10) through the fixing rods (9), the top surface of the second fixing ring (10) is connected to a plurality of driving motors (11), three rotating bars (12) are provided inside the first fixing ring (8) and the second fixing ring (10), the driving shaft of the driving motor (11) passes through the second fixing ring (10) and is connected to the inside of the rotating bar (12), the other end of the rotating bar (12) is connected to the inside thereof, and the outer circular wall surface of the connecting rod (13) is rotatably connected to a rotating wheel (14).

3. The spot welding machine for automobile parts according to claim 2, Features: The bottom surface of the rotating bar (12) is connected to a rotating shaft (15), and the top surface of the first fixing ring (8) is provided with a plurality of fixing grooves (16), and the positions of the rotating shaft (15) and the fixing grooves (16) correspond to each other.

4. The spot welding machine for automobile parts according to claim 3, Features: A bearing (17) is sleeved inside the fixing groove (16), and an inner ring of the bearing (17) is sleeved fixedly on the rotating shaft (15).

5. The spot welding machine for automobile parts according to claim 2, Features: One side of the rotating bar (12) is rotatably connected to a first connecting rod (18), and the interior of the first connecting rod (18) is rotatably connected to a second connecting rod (19).

6. The spot welding machine for automobile parts according to claim 5, Features: The bottom surface of the second connecting rod (19) is connected to a support rod (20), and the support rod (20) is fixedly connected to the first fixing ring (8).

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