Welding clamp for automobile auxiliary frame assembly

Abstract

The utility model provides an automobile auxiliary frame assembly welding clamp, which relates to the field of automobile manufacturing tools and comprises a base, an auxiliary seat is fixedly connected onto the base, a main clamp component is arranged on the base, convex plates are arranged at two ends of the auxiliary seat, and two limit rods are fixedly connected between the two convex plates. The main clamp assembly is controlled to automatically clamp the exteriors of frame bodies at the two ends of the auxiliary frame, and meanwhile the air pressure pushing assembly is utilized, so that the movable block drives the folded plate and the transverse supporting plate to push the inclined inner supporting piece to abut against the inner wall of the auxiliary frame. Force is applied to the inner wall and the outer wall of the two ends of the auxiliary frame at the same time for clamping, and a stable triangular clamping structure is formed. The rotating disc is rotated to drive the screw to rotate, then the middle block is driven to move stably, linear motion is ingeniously converted into rotation of the pin shaft and the inclined inner supporting piece through the meshing relation between the side tooth edge and the gear, and the inclined inner supporting piece can be flexibly adjusted to the angle matched with the angle according to the angle of the inner wall of the frame body at the two ends of the auxiliary frame.

Description

Technical Field

[0001] This utility model relates to the field of automotive manufacturing tooling, and in particular to a welding clamp for automotive subframe assembly. Background Technology

[0002] In the automotive manufacturing industry, the subframe, as a key component connecting the vehicle body to the suspension and powertrain systems, directly affects the vehicle's safety, handling stability, and ride comfort through its welding quality. With the rapid development of the automotive industry, consumers have increasingly stringent requirements for vehicle quality, placing higher standards on the welding processes and tooling equipment for subframes.

[0003] Traditional automotive subframe welding clamps typically only clamp the subframe from the outside. However, since the angles of the inner and outer walls of different subframes vary from acute to obtuse, simply using a single-direction external clamp cannot effectively guarantee stability. During the welding process, external forces generated during welding cannot be effectively resisted by external clamping alone, making the subframe prone to displacement or wobbling. Unstable clamping can easily lead to welding defects, which not only reduces production efficiency but also significantly increases production costs.

[0004] Therefore, it is necessary to provide a new automotive subframe assembly welding clamp to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a welding clamp for automotive subframe assembly.

[0006] This utility model provides a welding clamp for an automotive subframe assembly, comprising: a base, on which a sub-seat is fixedly connected, a main clamp assembly on which a main clamp assembly is provided, both ends of the sub-seat are provided with protruding plates, two limiting rods are fixedly connected between the two protruding plates, a moving block is slidably connected between the two limiting rods, a folded plate is fixedly connected to the lower end of each of the two moving blocks, and a horizontal support plate is provided at the other end of each of the two folded plates; a bidirectional fastening mechanism, comprising two pins, both pins being rotatably connected to the middle position of the horizontal support plate, inclined inner supports being fixedly connected to each of the two pins, a top head being provided at the other end of each of the two inclined inner supports, and an adjustment assembly being provided between the two pins.

[0007] Preferably, the two ends of the sub-seat are symmetrically provided with through slots, and the two folded plates are slidably connected to the two through slots respectively.

[0008] Preferably, two pneumatic actuation components are symmetrically provided on the side wall of the sub-seat, and the telescopic ends of the two pneumatic actuation components are respectively fixedly connected to the side walls of the two moving blocks.

[0009] Preferably, the adjusting assembly comprises gears, a middle block is arranged between the two gears, side teeth are arranged on the two side walls of the middle block, and the two side teeth are respectively engaged with the two gears.

[0010] Preferably, the middle part of the transversely arranged supporting plate is fixedly connected with a frame, two short rods are symmetrically fixedly connected between the frame, two sliding openings are symmetrically arranged in the middle block, the middle block is slidably connected with the two short rods, a screw rod is rotatably connected in the frame, the screw rod is arranged between the two short rods, and one end of the screw rod is connected with a rotating disc.

[0011] Preferably, the screw rod is a threaded rod, a threaded opening is arranged at the middle part of the middle block, and the middle block is threadedly connected with the screw rod.

[0012] Compared with the related art, the automobile sub-frame assembly welding clamp has the following beneficial effects:

[0013] 1. After the angle adaptation of the obliquely arranged inner supporting piece is completed, the main clamp assembly is controlled to automatically clamp the outer part of the two end frame bodies of the sub-frame, at the same time, the air pressure pushing assembly is utilized to drive the moving block to push the obliquely arranged inner supporting piece to abut against the inner wall of the sub-frame. The inner and outer walls of the two ends of the sub-frame are simultaneously clamped, and a stable clamping structure in a triangular state is formed. In the welding process, the clamping mode of the inner and outer walls can effectively resist the external force interference generated in the welding, so that the sub-frame can always remain stable and displacement or shaking does not occur, thereby ensuring the consistency and stability of the welding quality, and the production efficiency is greatly improved.

[0014] 2. The rotating disc is rotated to drive the screw rod to rotate, and then the middle block is stably moved. The meshing relationship between the side teeth and the gears is utilized to skillfully convert the linear motion into the rotation of the pin shaft and the obliquely arranged inner supporting piece. The obliquely arranged inner supporting piece can be flexibly adjusted to the angle matched with the inner wall angle of the two end frame bodies of the sub-frame. In actual production, the welding clamp can be accurately adapted to different inner wall angles of various models of sub-frames. The obliquely arranged inner supporting piece can be quickly rotated to the corresponding angle to realize close fitting. The high-precision adaptive positioning lays a solid foundation for the external clamping of the main clamp assembly and the whole welding process, ensures the accurate relative position of the components of the sub-frame in the welding, greatly improves the welding quality, and effectively reduces the waste rate caused by positioning deviation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a structural schematic diagram of one of preferred embodiments of the utility model;

[0016] Figure 2 Fig. 2 is a structural schematic diagram of another of preferred embodiments of the utility model;

[0017] Figure 3 For Figure 1 the structural schematic view shown at A.

[0018] Figure label: 1, base; 11, main clamp assembly; 2, sub-base; 21, limit rod; 3, moving block; 31, folding plate; 32, transverse support plate; 4, pin shaft; 41, obliquely placed inner support; 5, air pressure pushing assembly; 6, gear; 61, middle block; 62, side tooth edge; 7, frame; 71, short rod; 8, screw rod; 81, turntable. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and embodiments.

[0020] Please refer to Figures 1 to 3 , a car sub-frame assembly welding clamp includes: base 1, base 1 is fixedly connected with sub-base 2, base 1 is equipped with main clamp assembly 11, both ends of sub-base 2 are equipped with lug plate, two lug plates are fixedly connected with two limit rods 21, two limit rods 21 are slidably connected with moving block 3, the lower end of two moving blocks 3 is fixedly connected with folding plate 31, and the other end of two folding plates 31 is equipped with transverse support plate 32;Two-way fastening mechanism, two-way fastening mechanism includes two pin shafts 4, two pin shafts 4 are rotatably connected with the middle position of transverse support plate 32, two pin shafts 4 are fixedly connected with obliquely placed inner support 41, and the other end of two obliquely placed inner supports 41 is equipped with top head, and adjusting assembly is arranged between two pin shafts 4.

[0021] In the specific implementation process, as Figure 1 and Figure 2 shown, the two ends of sub-base 2 are symmetrically provided with through grooves, and two folding plates 31 are slidably connected with two through grooves respectively.

[0022] It should be noted that: the sliding connection design of through groove and folding plate 31 provides a key guide and movement path for the position adjustment of obliquely placed inner support 41;

[0023] When air pressure pushing assembly 5 works, moving block 3 drives folding plate 31 to slide in through groove, and this design ensures that folding plate 31 can stably move along the preset direction, and then accurately push obliquely placed inner support 41 to abut against the inner wall of sub-frame, so that the whole clamping process is more reliable. In actual welding operation, the stable movement path can ensure that obliquely placed inner support 41 can accurately find the best support position on different sub-frames of vehicle models, improving the universality and practicality of the welding clamp.

[0024] Reference Figure 1 and Figure 2As shown, two air pressure pushing assemblies 5 are symmetrically arranged on the side walls of the auxiliary seat 2, and the telescopic ends of the two air pressure pushing assemblies 5 are fixedly connected with the side walls of the two moving blocks 3 respectively.

[0025] It should be noted that the air pressure pushing assembly 5 serves as a power source to provide stable and controllable power for the cooperative clamping of the inner and outer walls of the auxiliary frame. By controlling the extension and retraction of the air pressure pushing assembly 5, the position of the moving block 3 can be accurately adjusted, thereby controlling the abutting of the obliquely arranged inner support 41 and the inner wall of the auxiliary frame.

[0026] Referring to Figure 1 and Figure 3 As shown, the adjusting assembly includes a gear 6, a middle block 61 is arranged between the two gears 6, and side teeth edges 62 are arranged on the two side walls of the middle block 61. The two side teeth edges 62 are respectively engaged with the two gears 6.

[0027] It should be noted that when the screw rod 8 rotates to drive the middle block 61 to move, the side teeth edges 62 move accordingly. Due to the engagement relationship with the gears 6, the gears 6 are driven to rotate. This transmission mode has high transmission accuracy, can accurately control the rotation angle of the pin shaft 4, and accurately adjust the angle of the obliquely arranged inner support 41, so that it is perfectly adapted to the angle of the inner wall of the auxiliary frame. When facing auxiliary frames with various inner wall angles, this structure can quickly and accurately complete the angle adjustment, providing a precise positioning basis for subsequent clamping and welding work.

[0028] Referring to Figure 3 As shown, the middle part of the transversely arranged supporting plate 32 is fixedly connected with a frame 7, two short rods 71 are symmetrically fixedly connected between the frame 7, two sliding openings are symmetrically arranged in the middle block 61, and the middle block 61 is slidingly connected with the two short rods 71. The frame 7 is rotatably connected with a screw rod 8, and the screw rod 8 is arranged between the two short rods 71. One end of the screw rod 8 is installed and connected with a rotating disc 81.

[0029] It should be noted that the short rod 71 limits the movement direction of the middle block 61, ensuring that it can only stably slide along the axial direction of the screw rod 8. The operator can easily drive the screw rod 8 to rotate by rotating the rotating disc 81, thereby accurately controlling the movement of the middle block 61.

[0030] Referring to Figure 1 and Figure 3 As shown, the screw rod 8 is a threaded rod, and a threaded opening is arranged at the middle part of the middle block 61. The middle block 61 is threadedly connected with the screw rod 8.

[0031] It should be noted that the operator can move the middle block 61 to the appropriate position by rotating the rotating disc 81 according to the measured data of the angle of the inner wall of the auxiliary frame, thereby accurately adjusting the angle of the obliquely arranged inner support 41.

[0032] The working principle of the automobile sub-frame assembly welding clamp provided by the utility model is as follows: rotating the rotating disc 81 drives the screw rod 8 to rotate relative to the frame 7, so that the middle block 61 moves stably relative to the two short rods 71, the middle block 61 drives the side teeth edges 62 on the two sides to move, drives the two gears 6 meshed with the side teeth edges 62 to drive the two pin shafts 4 to rotate, the two pin shafts 4 drive the two obliquely arranged inner supporting pieces 41 to rotate relative to the horizontally arranged supporting plates 32 to a certain angle, so that the two obliquely arranged inner supporting pieces 41 are matched with the inner wall angles of the frame bodies at the two ends of the sub-frame.

[0033] The rear control main clamp assembly 11 (prior art) clamps the frame bodies at the two ends of the sub-frame automatically, the rear control air pressure pushing assembly 5 (prior assembly) controls the two moving blocks 3 to slide stably relative to the two ends of the two limiting rods 21 respectively, so that the two moving blocks 3 drive the two foldable plates 31 to slide relative to the two through grooves, the horizontally arranged supporting plates 32 at the opposite ends of the two foldable plates 31 push the two obliquely arranged inner supporting pieces 41 to abut against the inner wall of the frame body at the two ends of the sub-frame respectively, so that the sub-frame can be clamped firmly between the inner and outer walls at the two ends of the sub-frame, so as to ensure that the sub-frame is stable enough in the subsequent welding process.

[0034] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A welding clamp for an automotive subframe assembly, characterized in that, include: A base (1) is fixedly connected to a sub-base (2). A main clamp assembly (11) is provided on the base (1). Both ends of the sub-base (2) are provided with protruding plates. Two limiting rods (21) are fixedly connected between the two protruding plates. A moving block (3) is slidably connected between the two limiting rods (21). A folding plate (31) is fixedly connected at the lower end of the two moving blocks (3). A horizontal support plate (32) is provided at the other end of the two folding plates (31). A bidirectional fastening mechanism is provided, comprising two pins (4), both pins (4) being rotatably connected to the middle position of the horizontal support plate (32), both pins (4) being fixedly connected to inclined inner support members (41), the other end of both inclined inner support members (41) being provided with a top head, and an adjustment component being provided between the two pins (4).

2. The automotive subframe assembly welding clamp according to claim 1, characterized in that, The two ends of the sub-seat (2) are symmetrically provided with through slots, and the two folded plates (31) are slidably connected to the two through slots respectively.

3. The automotive subframe assembly welding clamp according to claim 1, characterized in that, Two pneumatic actuation components (5) are symmetrically arranged on the side wall of the sub-seat (2), and the telescopic ends of the two pneumatic actuation components (5) are respectively fixedly connected to the side walls of the two moving blocks (3).

4. The automotive subframe assembly welding clamp according to claim 1, characterized in that, The adjustment assembly includes gears (6), and a central block (61) is provided between the two gears (6). The two side walls of the central block (61) are provided with side teeth (62), and the two side teeth (62) mesh with the two gears (6) respectively.

5. The automotive subframe assembly welding clamp according to claim 4, characterized in that, A frame (7) is fixedly connected to the middle of the horizontal support plate (32). Two short rods (71) are symmetrically fixedly connected between the frames (7). Two sliding openings are symmetrically provided in the central block (61). The central block (61) is slidably connected to the two short rods (71). A screw (8) is rotatably connected in the frame (7). The screw (8) is located between the two short rods (71). A turntable (81) is installed at one end of the screw (8).

6. The automotive subframe assembly welding clamp according to claim 5, characterized in that, The screw (8) is a threaded rod, and the central block (61) has a threaded opening at the middle position. The central block (61) is threadedly connected to the screw (8).

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