Automobile body thin plate nut welding machine

Abstract

The utility model discloses an automobile body thin plate nut welding machine which comprises a base plate, a vertical bin welded to the top of the base plate, a transverse top plate welded to the side, close to the base plate, of the vertical bin, an electric telescopic rod installed on the top of the transverse top plate, and a movable electrode installed on the electric telescopic rod through a copper table installed at the movable end of the electric telescopic rod. A U-shaped bin is welded to the side, close to the base plate, of the vertical bin and located below the transverse top plate, and a static electrode is installed on the top of a copper table in the U-shaped bin. According to the automobile body thin plate nut welding machine, when a movable electrode presses the top of a nut, a connecting disc compresses a spring, after welding is completed, the movable electrode moves upwards, at the moment, a thin plate relieves downward pressure applied to a second sliding rod, and under the elastic effect of the spring, the thin plate abuts against the connecting disc to drive the second sliding rod to move upwards; the thin plate is jacked upwards so that the thin plate can be separated from the static electrode, and after welding is completed every time, the thin plate is automatically jacked so that the thin plate can be automatically separated from the static electrode.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile welding, in particular to a thin plate nut welding machine for an automobile body. Background Art

[0002] With the rapid development of the automobile industry, welding technology in the automobile manufacturing process is also constantly improving. In automobile body manufacturing, sheet nut welding is an important process. At present, resistance welding is often used for welding sheet nuts.

[0003] With regard to the existing related technologies, the inventors believe that the following defects often exist: when welding a thin plate and a nut by resistance welding, there is often a certain degree of adhesion between the thin plate and the static electrode column. At this time, when removing the thin plate, a certain force needs to be applied to remove the thin plate from the static electrode. The unloading of the thin plate after welding is inconvenient, and long-term work puts a lot of labor intensity on the arms.

[0004] For this purpose, we propose a automobile body sheet metal nut welding machine. Utility Model Content

[0005] The utility model aims to provide a nut welding machine for automobile body thin plate to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A thin plate nut welding machine for automobile body, comprising:

[0008] A pad, a vertical bin is welded on the top of the pad, a resistance welding main machine is installed inside the vertical bin, a horizontal top plate is welded on the side of the vertical bin close to the pad, an electric telescopic rod is installed on the top of the horizontal top plate, a moving electrode is installed on the copper platform installed on the movable end of the electric telescopic rod, a U-shaped bin is welded on the side of the vertical bin close to the pad and located below the horizontal top plate, a static electrode is installed on the top of the copper platform inside the U-shaped bin, and the static electrode and the moving electrode are coaxially arranged, and a positioning column is installed at the center of the top circle of the static electrode;

[0009] Both sides of the U-shaped bin are integrally formed with convex edges, and both sides of the U-shaped bin close to one end of the static electrode are installed with lifting components, and the movable end of the lifting component is located above the convex edge, and the height of the top of the movable end of the lifting component is one centimeter higher than the height of the top of the static electrode.

[0010] As an improved technical solution, the top material assembly includes a perforated plate welded to the bottom of the side of the U-shaped bin, a slide rod 1 is slidably installed in the circular hole of the perforated plate, a baffle is welded to the bottom of the slide rod 1, a connecting plate is detachably installed on the top of the slide rod 1, a slide rod 2 is welded at the center of the top of the connecting plate, and a spring is sleeved on the outside of the slide rod 1 and located between the perforated plate and the connecting plate.

[0011] As an improved technical solution, a rubber layer is bonded to the top of the sliding rod 2, and the height of the rubber layer is one centimeter.

[0012] As an improved technical solution, a threaded hole is opened at the center of the bottom of the connecting plate, and an external threaded rod threadedly connected to the threaded hole is welded at the center of the top of the sliding rod.

[0013] As an improved technical solution, a hexagonal block is welded at the center of the bottom of the baffle.

[0014] As an improved technical solution, triangular plates are welded between the two sides of the bottom of the U-shaped bin and the vertical bin, and between the two sides of the top of the pad and the vertical bin.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. In the present invention, when the moving electrode is pressed on the top of the nut, the connecting plate compresses the spring. When welding is completed, the moving electrode moves upward. At this time, the thin plate releases the downward pressure on the second slide bar. Under the elastic action of the spring, the second slide bar is driven upward against the connecting plate, and the thin plate is lifted upward to separate the thin plate from the static electrode. After each welding is completed, the thin plate is automatically lifted and automatically separated from the static electrode, which is convenient for the subsequent unloading operation of the thin plate.

[0017] 2. The utility model discloses that the threaded connection between the external threaded rod and the threaded hole is released, the baffle plate is pulled out downwards, the spring is disassembled, and then a new spring is placed on the top of the orifice plate, and after the slide bar 1 passes through the inner hole of the orifice plate and the inner cavity of the spring in sequence, the external threaded rod is threadedly connected to the threaded hole again and fixed together again to complete the replacement of the spring. The slide bar 1 can be separated through the detachable connection with the connecting plate to realize the detachable installation of the spring. In the later use, the spring can be disassembled and replaced to ensure that the elasticity of the spring can separate the thin plate from the static electrode, and there is no need to replace the entire top material assembly, which also reduces the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The schematic diagram of the structure of a thin plate nut welding machine for automobile body;

[0019] Figure 2This is a schematic diagram of the structure of a U-shaped bin in a thin plate nut welding machine for an automobile body;

[0020] Figure 3 The diagram is a schematic diagram of the exploded structure of a material ejection component in a thin plate nut welding machine for an automobile body.

[0021] In the figure: 1. pad; 2. vertical bin; 3. U-shaped bin; 31. convex edge; 4. positioning column; 5. static electrode; 6. horizontal top plate; 7. electric telescopic rod; 8. moving electrode; 9. material lifting assembly; 91. orifice plate; 92. hexagonal block; 93. baffle plate; 94. slide bar 1; 95. spring; 96. connecting plate; 97. slide bar 2; 98. rubber layer; 99. external threaded rod; 910. threaded hole; 10. triangle plate. DETAILED DESCRIPTION

[0022] 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.

[0023] Example 1

[0024] like Figure 1-3 As shown, the embodiment of the utility model provides a thin plate nut welding machine for automobile body, comprising:

[0025] A pad 1 is provided, and a vertical bin 2 is welded on the top of the pad 1. A resistance welding host is installed inside the vertical bin 2. Resistance welding is an existing mature technology, so it will not be described in detail. A horizontal top plate 6 is welded on the side of the vertical bin 2 close to the pad 1. An electric telescopic rod 7 is installed on the top of the horizontal top plate 6, and the movable end of the electric telescopic rod 7 is located below the horizontal top plate 6. The electric telescopic rod 7 is installed with a moving electrode 8 through a copper platform installed on its movable end. A U-shaped bin 3 is welded on the side of the vertical bin 2 close to the pad 1 and located below the horizontal top plate 6. A static electrode 5 is installed on the top of the copper platform inside the U-shaped bin 3, and the static electrode 5 and the moving electrode 8 are coaxially arranged. A positioning column 4 is installed at the center of the top circle of the static electrode 5. The positioning column 4 serves as a device for limiting the thin plate and the nut, ensuring that the nut is coaxially arranged with the hole of the thin plate after welding, thereby ensuring the quality of welding.

[0026] Both sides of the U-shaped bin 3 are integrally formed with convex edges 31, and both sides of the U-shaped bin 3 close to one end of the static electrode 5 are installed with a lifting assembly 9, and the movable end of the lifting assembly 9 is located above the convex edge 31, and the height of the top of the movable end of the lifting assembly 9 is one centimeter higher than the height of the top of the static electrode 5.

[0027] The material ejection assembly 9 includes a perforated plate 91 welded to the bottom of the side of the U-shaped bin 3, a slide bar 94 is slidably installed in the circular hole of the perforated plate 91, a baffle 93 is welded to the bottom of the slide bar 94, a connecting plate 96 is detachably installed on the top of the slide bar 94, a slide bar 2 97 is welded at the center of the top of the connecting plate 96, and a sliding hole for the slide bar 2 97 to pass through is opened on the top of the convex edge 31, and a spring 95 is sleeved on the outside of the slide bar 94 and located between the perforated plate 91 and the connecting plate 96. When the moving electrode 8 is pressed on the top of the nut, the downward pressure of the moving electrode 8 will drive the thin film The plate moves downward, and the downward pressure of the thin plate will press the slide bar 97 downward, and make the connecting plate 96 compress the spring 95. When the welding is completed, the movable electrode 8 moves upward. At this time, the thin plate releases the downward pressure on the slide bar 97, and under the elastic action of the spring 95, it pushes against the connecting plate 96 to drive the slide bar 97 upward, and lifts the thin plate upward to separate the thin plate from the static electrode 5. After each welding is completed, the thin plate is automatically lifted, and the thin plate is automatically separated from the static electrode 5, which is convenient for the subsequent unloading operation of the thin plate.

[0028] A rubber layer 98 is bonded to the top of the second slide bar 97, and the height of the rubber layer 98 is one centimeter. The provision of the rubber layer 98 prevents the second slide bar 97 from scratching the surface of the thin plate when it contacts the thin plate, thereby playing a protective role for the thin plate.

[0029] A threaded hole 910 is provided at the center of the bottom of the connecting disk 96, and an external threaded rod 99 threadedly connected to the threaded hole 910 is welded at the center of the top of the slide rod 1 94, which is clamped between a wrench and the hexagonal block 92, and another wrench clamps the slide rod 2 97 to drive the baffle plate 93 to rotate. When the baffle plate 93 rotates, it will drive the external threaded rod 99 to rotate, so that the threaded connection between the external threaded rod 99 and the threaded hole 910 can be released, and the baffle plate 93 is pulled out downward to realize the detachment of the spring 95, and then a new spring 95 is placed on the top of the orifice plate 91, and After the slide rod 94 passes through the inner hole of the orifice plate 91 and the inner cavity of the spring 95 in turn, the external threaded rod 99 is threadedly connected to the threaded hole 910 again to fix them together again, and the spring 95 is replaced. Through the detachable connection between the slide rod 94 and the connecting plate 96, they can be separated to achieve detachable installation of the spring 95. In later use, the spring 95 can be disassembled and replaced to ensure that the elasticity of the spring 95 can separate the thin plate and the static electrode 5, and there is no need to replace the entire top material assembly 9, which also reduces the maintenance cost.

[0030] A hexagonal block 92 is welded at the center of the bottom of the baffle plate 93. The arrangement of the hexagonal block 92 facilitates the use of a handle to drive the baffle plate 93 to rotate.

[0031] Triangular plates 10 are welded between the two sides of the bottom of the U-shaped bin 3 and the vertical bin 2 and between the two sides of the top of the pad 1 and the vertical bin 2. The triangular plates 10 are used to reinforce the vertical bin 2 and improve stability.

[0032] The working principle of the utility model is:

[0033] When in use, align the hole of the thin plate with the positioning column 4, and make the positioning column 4 pass through the hole of the thin plate, and then put the nut sleeve to be welded on the positioning column 4. At this time, the nut and the thin plate are in contact. Then, the electric telescopic rod 7 drives the moving electrode 8 to move downward and press on the top of the nut. Subsequently, the resistance welding assembly is turned on and the nut is welded on the thin plate. When the moving electrode 8 is pressed on the top of the nut, the downward pressure of the moving electrode 8 will drive the thin plate to move downward. The downward pressure of the thin plate will press the slide bar 2 97 to move downward and make the connecting plate 96 compress the spring 95. When the welding is completed, the moving electrode 8 moves upward. At this time, the thin plate releases the downward pressure applied to the slide bar 2 97. Under the elastic action of the spring 95, it presses against the connecting plate 96 to drive the slide bar 2 97 to move upward, and lifts the thin plate upward to separate the thin plate from the static electrode 5.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A nut welding machine for automobile body sheet metal, characterized in that: include: A pad (1), a vertical bin (2) is welded on the top of the pad (1), a resistance welding main machine is installed inside the vertical bin (2), a horizontal top plate (6) is welded on the side of the vertical bin (2) close to the pad (1), an electric telescopic rod (7) is installed on the top of the horizontal top plate (6), and a moving electrode (8) is installed on the copper platform installed at the movable end of the electric telescopic rod (7), a U-shaped bin (3) is welded on the side of the vertical bin (2) close to the pad (1) and located below the horizontal top plate (6), a static electrode (5) is installed on the top of the copper platform inside the U-shaped bin (3), and the static electrode (5) and the moving electrode (8) are coaxially arranged, and a positioning column (4) is installed at the center of the top circle of the static electrode (5); Both sides of the U-shaped bin (3) are integrally formed with convex edges (31), and both sides of the U-shaped bin (3) close to one end of the static electrode (5) are installed with a lifting assembly (9), and the movable end of the lifting assembly (9) is located above the convex edge (31), and the height of the top of the movable end of the lifting assembly (9) is one centimeter higher than the height of the top of the static electrode (5).

2. The automobile body sheet nut welding machine according to claim 1, characterized in that: The ejection assembly (9) comprises a perforated plate (91) welded to the bottom of the side of the U-shaped bin (3); a slide rod (94) is slidably installed in the circular hole of the perforated plate (91); a baffle (93) is welded to the bottom of the slide rod (94); a connecting plate (96) is detachably installed at the top of the slide rod (94); a slide rod (97) is welded at the center of the top of the connecting plate (96); and a spring (95) is sleeved on the outside of the slide rod (94) and located between the perforated plate (91) and the connecting plate (96).

3. The automobile body sheet nut welding machine according to claim 2, characterized in that: A rubber layer (98) is bonded to the top of the second sliding rod (97), and the height of the rubber layer (98) is one centimeter.

4. The automobile body sheet nut welding machine according to claim 3, characterized in that: A threaded hole (910) is provided at the center of the bottom of the connection plate (96), and an external threaded rod (99) threadedly connected to the threaded hole (910) is welded at the center of the top of the sliding rod (94).

5. The automobile body sheet nut welding machine according to claim 4, characterized in that: A hexagonal block (92) is welded at the center of the bottom of the baffle (93).

6. The automobile body sheet nut welding machine according to claim 5, characterized in that: Triangular plates (10) are welded between the two sides of the bottom of the U-shaped bin (3) and the vertical bin (2), and between the two sides of the top of the pad (1) and the vertical bin (2).

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