Projection welding machine for batch welding of automobile large floor parts

Abstract

The utility model discloses a projection welding machine for batch welding of automobile large floor parts, which relates to the technical field of automobile large floor welding and comprises a base, a vertical column fixedly arranged on the base, a cross beam slidably arranged on one side above the vertical column, a fixed cylinder fixedly arranged on one side of the cross beam, and a rotating block rotatably connected below the fixed cylinder. A transverse rod is fixedly arranged below the rotating block, two upper electrodes are fixedly arranged below the two ends of the transverse rod, the two upper electrodes are provided with grabbing parts, a plurality of limiting cylinders are fixedly arranged on the base, limiting rods are inserted into the limiting cylinders, inclined grooves are fixedly formed in the upper ends of the limiting rods, and a horizontal part is arranged at one end of the lower side of each inclined groove; the two upper electrodes are arranged on the cross rod, the upper electrodes are provided with the grabbing parts, the two upper electrodes can be vertically aligned with the horizontal part and the lower electrode respectively, grabbing and welding of projection welding nuts can be achieved through lifting of the upper electrodes, manual operation is not needed, work efficiency is improved, and labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile large floor welding, in particular to a projection welding machine used for batch welding of automobile large floor parts. Background Art

[0002] The main floor of a car is a major component of the car, playing the role of load-bearing, collision safety, and providing installation for various system parts. The main floor of a car generally includes the front floor and the rear floor. In order to install or connect other components, the main floor of a car usually requires welding a large number of parts, and projection welding nuts are usually welded on the parts with the help of projection welding machines.

[0003] However, the existing projection welding machine needs to be manually installed when welding the projection welding nut, and cannot realize automatic loading of the projection welding nut, which increases the labor intensity of workers and reduces work efficiency. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a projection welding machine for batch welding of large automobile floor components, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a projection welding machine for batch welding of large floor parts of automobiles, comprising a base, wherein a column is fixedly arranged on the base, a crossbeam is slidably arranged on one side above the column, a fixed cylinder is fixedly arranged on one side of the crossbeam, a rotating block is rotatably connected below the fixed cylinder, a cross bar is fixedly arranged below the rotating block, two upper electrodes are fixedly arranged below both ends of the cross bar, and both upper electrodes are provided with a gripping portion, a plurality of limiting cylinders are fixedly arranged on the base, and limiting rods are inserted in the plurality of limiting cylinders, a spring is fixedly arranged in the limiting cylinder below the limiting rod, an inclined slot is fixedly provided on the upper end of the limiting rod, a horizontal portion is provided at one end of the lower side of the inclined slot, the horizontal portion is vertically aligned with one of the upper electrodes, and a lower electrode is fixedly arranged on the base with the other upper electrode vertically aligned.

[0006] Preferably, the gripping portion is a cylinder, and the gripping portion can be inserted into the thread of the projection welding nut. Sliding protrusions are provided on both sides of the gripping portion, and a spring 2 is provided in the gripping portion to push the two protrusions to move outward.

[0007] Preferably, a telescopic rod is fixedly provided on the column, and the telescopic end of the telescopic rod is fixedly connected to the crossbeam.

[0008] Preferably, a motor is fixedly mounted on the fixed cylinder, and a power output end of the motor is fixedly connected to the rotating block.

[0009] Preferably, an opening is provided in the column, and the inclined slot passes through the opening and extends to the other side of the column.

[0010] The utility model provides a projection welding machine for batch welding of large floor parts of automobiles, which has the following beneficial effects: the device is provided with two upper electrodes on the cross bar, and the upper electrodes are provided with a grabbing portion. The two upper electrodes can be vertically aligned with the horizontal portion and the lower electrode respectively. The projection welding nuts can be grabbed and welded by lifting and lowering the upper electrodes. The cross bar can be rotated by starting the motor to realize the exchange of the positions of the two upper electrodes. The projection welding nuts can be automatically supplemented for the horizontal portion through the inclined slot, and the projection welding nuts can be automatically installed without manual operation, thereby improving work efficiency and reducing the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the main view of the utility model;

[0012] Figure 2 for Figure 1 A partial enlarged view of middle A.

[0013] In the figure: 1. base; 2. column; 3. crossbeam; 4. fixing cylinder; 5. rotating block; 6. crossbar; 7. upper electrode; 8. grabbing part; 9. bump; 10. lower electrode; 11. limiting cylinder; 12. limiting rod; 13. inclined slot; 14. horizontal part; 15. telescopic rod; 16. opening; 17. motor; 18. spring 1; 19. spring 2. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0015] See also Figure 1-2The utility model provides a technical solution: a projection welding machine for batch welding of large floor parts of automobiles, including a base 1, a column 2 is fixedly arranged on the base 1, a crossbeam 3 is slidably arranged on one side above the column 2, a fixed cylinder 4 is fixedly arranged on one side of the crossbeam 3, a rotating block 5 is rotatably connected below the fixed cylinder 4, a crossbar 6 is fixedly arranged below the rotating block 5, two upper electrodes 7 are fixedly arranged below both ends of the crossbar 6, and the two upper electrodes 7 are provided with a grabbing part 8. The positions of the two grabbing parts 8 can be swapped by rotating the rotating block 5 180 degrees. A plurality of limiting cylinders 11 are fixedly arranged on the base 1, and limiting rods 12 are inserted in the plurality of limiting cylinders 11. A spring 18 is fixedly provided below the limit rod 12, and an inclined groove 13 is fixedly provided on the upper end of the limit rod 12. Multiple projection welding nuts can be placed in the inclined groove 13 and the projection welding nuts can slide toward the lower side. A horizontal portion 14 is provided at the lower side end of the inclined groove 13, and the horizontal portion 14 is vertically aligned with one of the upper electrodes 7. A lower electrode 10 is fixedly provided on the base 1 and is vertically aligned with the other upper electrode 7. The lower electrode 10 is used to place parts. When the beam 3 moves downward, one of the upper electrodes 7 can weld the projection welding nut, and the other upper electrode 7 can grab the projection welding nut in the horizontal portion 14. The positions of the two are swapped by rotating the turn block 5 to realize automatic loading.

[0016] As an embodiment of the present utility model, the grabbing portion 8 is a cylinder, which can be inserted into the thread of the projection welding nut. Sliding protrusions 9 are provided on both sides of the grabbing portion 8, and the ends of the protrusions 9 are spherical. A spring 2 19 is provided in the grabbing portion 8 to push the two protrusions 9 to move outward. The projection welding nut can be clamped on the grabbing portion 8 by expanding the two protrusions 9 outward, thereby realizing the grasping of the projection welding nut.

[0017] As an embodiment of the present invention, a telescopic rod 15 is fixedly provided on the column 2 , and the telescopic end of the telescopic rod 15 is fixedly connected to the crossbeam 3 , so that the rise or fall of the crossbeam 3 is controlled by the telescopic rod 15 .

[0018] As an embodiment of the present invention, a motor 17 is fixedly provided on the fixed cylinder 4 , and a power output end of the motor 17 is fixedly connected to the rotating block 5 , and the rotating block 5 is controlled by the motor 17 to rotate 180 degrees.

[0019] As an embodiment of the present invention, an opening 16 is provided in the column 2 , and the inclined slot 13 extends through the opening 16 to the other side of the column 2 , so as to facilitate the addition of the projection welding nut from the other end of the inclined slot 13 .

[0020] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0021] The working principle and usage process of the present invention are as follows: when in use, multiple projection welding nuts are placed in the inclined groove 13, and the projection welding nuts in the inclined groove 13 can slide toward the lower side end, and the projection welding nuts at the end will be placed in the horizontal part 14. After the projection welding nuts in the horizontal part 14 are taken out, the projection welding nuts in the inclined groove 13 will be automatically added to the horizontal part 14, and the crossbeam 3 is pushed down by the telescopic rod 15. When the crossbeam 3 is lowered, the upper electrode 7 will also be lowered at the same time, and the grasping part 8 of the upper electrode 7 can be inserted into the threaded hole of the projection welding nut in the horizontal part 14. The projection welding nut can be stuck on the grasping part 8 by pushing the protrusion 9 outward through the spring 2 19. When the electrode is lowered, the horizontal part 14 and the inclined groove 13 can be pressed to move downward, and the spring 18 will be compressed at the same time. The upward thrust of the spring 18 can be used to maintain To ensure that the projection welding nut can be in close contact with the grasping part 8, the projection welding nut in the horizontal part 14 can be taken out by resetting the telescopic rod 15, and then the motor 17 is started to rotate the rotating block 5 180 degrees. At this time, the upper electrode 7 with the projection welding nut is rotated to above the lower electrode 10, and the crossbeam 3 is lowered again by the telescopic rod 15. When the projection welding nut on the upper electrode 7 contacts the part on the lower electrode 10, the upper electrode 7 is energized to realize welding the projection welding nut to the part. During welding, the upper electrode 7 on the other side can grasp the projection welding nut in the horizontal part 14, realizing automatic loading. After welding is completed, the crossbeam 3 is controlled to rise by the telescopic rod 15. Since the projection welding nut has been welded to the part, the grasping part 8 can be pulled out from the threaded hole of the projection welding nut at this time, and the part is removed from the lower electrode 10 to complete the welding.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A projection welding machine for batch welding of large automobile floor parts, characterized in that: The invention comprises a base (1), a column (2) is fixedly provided on the base (1), a crossbeam (3) is slidably provided on one side above the column (2), a fixed cylinder (4) is fixedly provided on one side of the crossbeam (3), a rotating block (5) is rotatably connected below the fixed cylinder (4), a crossbar (6) is fixedly provided below the rotating block (5), two upper electrodes (7) are fixedly provided below both ends of the crossbar (6), and both upper electrodes (7) are provided with a gripping portion (8), and a plurality of limiting cylinders are fixedly provided on the base (1). (11), a plurality of the limiting cylinders (11) are each inserted with a limiting rod (12), a spring (18) is fixedly provided in the limiting cylinder (11) below the limiting rod (12), an inclined groove (13) is fixedly provided at the upper end of the limiting rod (12), a horizontal portion (14) is provided at one end of the lower side of the inclined groove (13), the horizontal portion (14) is vertically aligned with one of the upper electrodes (7), and a lower electrode (10) is fixedly provided on the base (1) and is vertically aligned with another upper electrode (7).

2. A projection welding machine for batch welding of large automobile floor parts according to claim 1, characterized in that: The grabbing portion (8) is a cylinder, and the grabbing portion (8) can be inserted into the thread of the projection welding nut. Sliding protrusions (9) are provided on both sides of the grabbing portion (8), and a spring (19) capable of pushing the two protrusions (9) to move outward is provided in the grabbing portion (8).

3. A projection welding machine for batch welding of large automobile floor parts according to claim 1, characterized in that: A telescopic rod (15) is fixedly provided on the upright column (2), and the telescopic end of the telescopic rod (15) is fixedly connected to the crossbeam (3).

4. A projection welding machine for batch welding of large automobile floor parts according to claim 1, characterized in that: A motor (17) is fixedly provided on the fixed cylinder (4), and a power output end of the motor (17) is fixedly connected to the rotating block (5).

5. The projection welding machine for batch welding of large automobile floor parts according to claim 1, characterized in that: An opening (16) is provided in the column (2), and the inclined slot (13) passes through the opening (16) and extends to the other side of the column (2).

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