Product nut prevention device

Abstract

The utility model relates to the technical field of automobile parts welding discloses a product nut prevention device, including mechanical arm, the outer surface fixed mounting clamping box of mechanical arm, the inner surface fixed mounting of clamping box has clamping mechanism, the bottom fixed mounting of clamping box has positioning mechanism, the clamping mechanism includes motor, the top of motor and the top fixed connection of clamping box inner chamber, the output of motor is fixedly installed with rotating shaft through speed reducer, the outer surface fixed mounting of rotating shaft has main bevel gear. The product nut prevention device, through the movement of cylinder drive air rod, inserts the air rod into the hole of the reserved welding point, makes the nut positioning, then the nut moves down, sticks the nut to the automobile steel sheet, makes the welding head touch the nut and the automobile steel sheet, carries out the preliminary welding to the nut and the automobile steel sheet through the welding head of the welding frame on the moving clamping rod.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive component welding, and in particular to a product nut prevention device. Background Technology

[0002] In industrial manufacturing, nut welding is a widely used connection process. Its core purpose is to securely fix nuts (such as hexagonal nuts, square nuts, flange nuts, or specially designed weld nuts) to the surface of metal sheets, structural components, or other substrates through welding technology, thereby providing a reliable threaded connection point for subsequent assembly processes. This process significantly improves production efficiency and overcomes the shortcomings of traditional riveting, screwing, or bonding methods in terms of strength, sealing, or space constraints.

[0003] In the assembly process, many scenarios require pre-embedded threaded connection points in thin plates or enclosed structures (such as car bodies). Direct tapping may fail due to insufficient material thickness or low strength. Welded nuts provide high-load-bearing internal threads, avoiding direct machining damage to the base material. However, in the nut welding process, to position the nut at the welding point, a bolt is usually fixed to the welding point first, then the nut is fixed to the bolt for welding, and then the bolt is removed. This process involves multiple welding steps and is inefficient. Utility Model Content

[0004] In view of the problems of cumbersome welding process and low welding efficiency in the existing nut welding process, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a product nut prevention device, which aims to quickly position and weld the nut to the welding point of the automotive sheet metal.

[0006] To solve the above technical problems, this utility model provides the following technical solution: a product nut prevention device, including a robotic arm, a clamping box fixedly installed on the outer surface of the robotic arm, a clamping mechanism fixedly installed on the inner surface of the clamping box, and a positioning mechanism fixedly installed on the bottom of the clamping box;

[0007] The clamping mechanism includes a motor, the top of which is fixedly connected to the top of the clamping box cavity. The output end of the motor is fixedly mounted with a rotating shaft via a reducer, and a main bevel gear is fixedly mounted on the outer surface of the rotating shaft.

[0008] In a preferred embodiment of the nut prevention device of the present invention, the clamping mechanism further includes a connecting frame, a threaded rod rotatably mounted on the inner surface of the connecting frame, and a bevel gear fixedly mounted on the outer surface of the threaded rod.

[0009] In a preferred embodiment of the nut prevention device of the present invention, the bottom of the connecting frame is fixedly connected to the bottom of the inner cavity of the clamping box, and the outer surface of the secondary bevel gear meshes with the outer surface of the primary bevel gear.

[0010] As a preferred embodiment of the nut prevention device of the present invention, the clamping mechanism further includes a movable clamping rod, the inner surface of which is threadedly connected to the outer surface of the threaded rod, and the outer surface of which is slidably connected to the inner surface of the clamping box.

[0011] In a preferred embodiment of the nut prevention device of this utility model, the positioning mechanism includes a cylinder, the top of which is fixedly connected to the bottom of the clamping box, and a piston rod is fixedly installed on the output end of the cylinder.

[0012] In a preferred embodiment of the nut prevention device of the present invention, the positioning mechanism further includes a welding frame, the outer surface of which is fixedly connected to the outer surface of the movable clamping rod, and a welding head is fixedly installed on the outer surface of the welding frame.

[0013] Compared with the prior art, the present invention has at least the following beneficial effects:

[0014] 1. This utility model improves welding efficiency and accuracy by adding a design for rapid positioning of the nut to the welding point during the welding process. Through the cooperation of a motor and rotating shaft with the main bevel gear and the driven bevel gear, and the cooperation of the driven bevel gear and the threaded rod with the moving clamping rod, the four moving clamping rods are moved inward to clamp the nut. Then, with the cooperation of a robotic arm, the nut is moved above the welding point of the automotive steel plate. Finally, through the cooperation of a cylinder and a pneumatic rod, the pneumatic rod precisely positions the nut on the welding point, eliminating the need to pre-fix the nut to the welding point with bolts.

[0015] 2. This utility model incorporates a pre-welding design for the nut. By using the movable clamping rod and welding frame in conjunction with the welding head, the nut is pre-welded while in contact with the steel plate, thus fixing the nut to the steel plate. This prevents the nut from shaking during welding and improves the efficiency of nut welding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the nut prevention device of this utility model.

[0017] Figure 2 This is a cross-sectional view of the clamping box structure of the nut prevention device of this utility model.

[0018] Figure 3 This utility model relates to a nut prevention device. Figure 1Schematic diagram of the enlarged structure of A in the middle;

[0019] Figure 4 This is a three-dimensional structural diagram of the welding frame and welding head of the nut prevention device of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Robotic arm; 2. Gripping box; 3. Gripping mechanism; 31. Motor; 32. Rotating shaft; 33. Main bevel gear; 34. Connecting frame; 35. Threaded rod; 36. Driven bevel gear; 37. Moving gripping rod; 4. Positioning mechanism; 41. Cylinder; 42. Pneumatic rod; 43. Welding frame; 44. Welding head. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Example 1

[0024] Reference Figures 1-3 This is the first embodiment of the present invention, which provides a product nut prevention device. The product nut prevention device includes a robotic arm 1, a clamping box 2 fixedly installed on the outer surface of the robotic arm 1, a clamping mechanism 3 fixedly installed on the inner surface of the clamping box 2, and a positioning mechanism 4 fixedly installed on the bottom of the clamping box 2.

[0025] The clamping mechanism 3 includes a motor 31, the top of which is fixedly connected to the top of the inner cavity of the clamping box 2. The output end of the motor 31 is fixedly mounted with a rotating shaft 32 via a reducer, and a main bevel gear 33 is fixedly mounted on the outer surface of the rotating shaft 32.

[0026] Motor 31 is electrically connected to an external power source and is controlled by an external PLC programming program.

[0027] The clamping mechanism 3 also includes a connecting frame 34, on the inner surface of which a threaded rod 35 is rotatably mounted, and on the outer surface of the threaded rod 35 a bevel gear 36 is fixedly mounted.

[0028] The bottom of the connecting frame 34 is fixedly connected to the bottom of the inner cavity of the clamping box 2, and meshes with the outer surface of the bevel gear 36 and the outer surface of the main bevel gear 33.

[0029] The clamping mechanism 3 also includes a movable clamping rod 37, the inner surface of which is threadedly connected to the outer surface of the threaded rod 35, and the outer surface of the movable clamping rod 37 is slidably connected to the inner surface of the clamping box 2.

[0030] During use, the motor 31 drives the rotating shaft 32 to rotate, and the rotating shaft 32 drives the driven bevel gear 36 to rotate through the main bevel gear 33. The driven bevel gear 36 drives the moving clamping rod 37 to move through the threaded rod 35, clamping the nut in multiple inward moving clamping rods 37.

[0031] Example 2

[0032] Reference Figures 1-4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the positioning mechanism 4 includes a cylinder 41, the top of the cylinder 41 is fixedly connected to the bottom of the clamping box 2, and the output end of the cylinder 41 is fixedly mounted with a piston rod 42.

[0033] The positioning mechanism 4 also includes a welding frame 43, the outer surface of which is fixedly connected to the outer surface of the movable clamping rod 37, and a welding head 44 is fixedly installed on the outer surface of the welding frame 43.

[0034] Cylinder 41 is connected to an external air pump, enabling the air rod 42 to extend and retract.

[0035] During use, the cylinder 41 drives the air rod 42 to move, inserting the air rod 42 into the hole of the reserved welding point to position the nut. Then the nut moves downward and is placed against the car steel plate, so that the welding head 44 touches the nut and the car steel plate. By moving the welding frame 43 on the clamping rod 37 and the welding head 44, the nut and the car steel plate are initially welded.

[0036] The remaining structure is the same as that in Example 1.

[0037] Based on embodiments 1-4, the working principle of this utility model is as follows: The robotic arm 1 first moves the clamping box 2 above the nut storage box. The motor 31 drives the rotating shaft 32 to rotate. The rotating shaft 32 drives the driven bevel gear 36 to rotate through the main bevel gear 33. The driven bevel gear 36 drives the moving clamping rod 37 to move through the threaded rod 35, clamping the nut in multiple inward moving clamping rods 37. Then, the robotic arm 1 moves the clamping box 2 above the reserved welding point of the automobile steel plate. Then, the cylinder 41 drives the air rod 42 to move, inserting the air rod 42 into the hole of the reserved welding point to position the nut. Then, the nut moves downward and is attached to the automobile steel plate, so that the welding head 44 touches the nut and the automobile steel plate. The welding head 44 on the moving clamping rod 37 welds the nut and the automobile steel plate. Then, all equipment is reset and the above operation is repeated to quickly pre-weld multiple nuts, which facilitates further welding by the staff.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A product nut prevention device, comprising a robotic arm (1), characterized in that: The outer surface of the robotic arm (1) is fixedly mounted with a clamping box (2), the inner surface of the clamping box (2) is fixedly mounted with a clamping mechanism (3), and the bottom of the clamping box (2) is fixedly mounted with a positioning mechanism (4). The clamping mechanism (3) includes a motor (31), the top of which is fixedly connected to the top of the inner cavity of the clamping box (2), and the output end of the motor (31) is fixedly mounted with a rotating shaft (32) via a reducer. A main bevel gear (33) is fixedly mounted on the outer surface of the rotating shaft (32).

2. The product nut prevention device according to claim 1, characterized in that: The clamping mechanism (3) further includes a connecting frame (34), on the inner surface of which a threaded rod (35) is rotatably mounted, and on the outer surface of which a bevel gear (36) is fixedly mounted.

3. The product nut prevention device according to claim 2, characterized in that: The bottom of the connecting frame (34) is fixedly connected to the bottom of the inner cavity of the clamping box (2), and the outer surface of the secondary bevel gear (36) meshes with the outer surface of the primary bevel gear (33).

4. The product nut prevention device according to claim 1, characterized in that: The clamping mechanism (3) further includes a movable clamping rod (37), the inner surface of which is threadedly connected to the outer surface of the threaded rod (35), and the outer surface of which is slidably connected to the inner surface of the clamping box (2).

5. The product nut prevention device according to claim 1, characterized in that: The positioning mechanism (4) includes a cylinder (41), the top of which is fixedly connected to the bottom of the clamping box (2), and the output end of the cylinder (41) is fixedly mounted with a piston rod (42).

6. The product nut prevention device according to claim 1, characterized in that: The positioning mechanism (4) also includes a welding frame (43), the outer surface of which is fixedly connected to the outer surface of the movable clamping rod (37), and a welding head (44) is fixedly installed on the outer surface of the welding frame (43).

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