Special fixture for welding upper piece of automobile auxiliary frame

Abstract

The utility model discloses a special fixture for welding an upper piece of an automobile auxiliary frame, and belongs to the field of automobile manufacturing and welding engineering. A clamp special for welding of an automobile auxiliary frame upper piece comprises a connecting plate block, an adjusting plate block is fixed to the lower side of the connecting plate block through a bolt, and a clamp device is fixed to one side of the adjusting plate block through a bolt. The clamp device has the advantages that the welding efficiency is improved, the welding period is shortened, and meanwhile, the clamp device can adapt to auxiliary frame upper pieces of different sizes and shapes through bolt connection between the adjusting plate block and the connecting plate block, so that the adaptability and the flexibility of equipment are remarkably improved, the dependence on various clamps is reduced, the working efficiency is improved, and the production cost is reduced. The problems that in the prior art, when an auxiliary frame upper piece is clamped and welded through a clamp, efficiency is low, and adaptability is poor are solved.

Description

Technical Field

[0001] The utility model relates to the fields of automobile manufacturing and welding engineering, and particularly relates to a special fixture for welding the upper piece of an automobile subframe. Background Technique

[0002] In the process of welding the upper piece of an automobile subframe, traditional methods usually use manual or pneumatic fixtures for clamping. These traditional methods generally have the following deficiencies. First, the manual clamping method depends on the skills and physical strength of the operator, with low efficiency and high labor intensity. Second, although pneumatic fixtures improve the clamping speed to a certain extent, they are still restricted by the air source, and have poor adaptability to upper pieces of subframes with different sizes and shapes, requiring frequent replacement of fixtures, resulting in an extended production cycle and low work efficiency. Content of the Utility Model

[0003] The purpose of the utility model is to provide a special fixture for welding the upper piece of an automobile subframe to solve the problems raised in the above background technique.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A special fixture for welding the upper piece of an automobile subframe, comprising: a connecting plate, a regulating plate is fixed to the lower side of the connecting plate by bolts, and a fixture device is fixed to one side of the regulating plate by bolts;

[0006] The fixture device includes a connecting frame, a connecting frame is fixed to one side of the regulating plate, two electric cylinders are fixed to one side of the connecting frame, and two clamping members are arranged on the outer side of the connecting frame.

[0007] Preferably, the clamping member includes a rack, a rack is fixed to the output end direction of the electric cylinder through a piston rod, gears are engaged with the outer side walls of the upper and lower ends of the rack, a clamping block is fixed to one side of the gear through a rotary connecting device, a rotating rod is fixed to the inner side of the clamping block through a rotary connecting device, and one side of the rotating rod is fixed to one side of the connecting frame through a rotary connecting device.

[0008] The connecting frame is fixed to the regulating plate, and the electric cylinder thereon can control the piston rod to extend and retract. When the electric cylinder drives the piston rod to extend and retract, it will push the rack to move. The rack is engaged with the gear, so the movement of the rack will drive the gear to rotate. The rotation of the gear drives the clamping block to move through a rotary connecting device (such as a hinge shaft or a pivot shaft), so as to realize the clamping and release of the upper piece of the subframe.

[0009] Preferably, the rotary connecting device is a hinge shaft or a pivot shaft.

[0010] Preferably, the connecting plate includes a baffle plate. The inner side of the adjusting plate is fitted with the baffle plate. Reserved grooves are formed on both sides of the baffle plate, and a fixing plate is fixed to the top of the baffle plate by screws.

[0011] The fixing plate provided on the connecting plate is connected to an external mobile device (which may be a welding robot or a manual moving device) to ensure that the fixture can be stably moved to the position of the subframe to be welded.

[0012] Preferably, the adjusting plate includes a bottom plate. The outer side of the baffle plate is fitted with the bottom plate. Arc-shaped grooves are formed on both sides of the bottom plate, and a connecting block is fixed to one side of the bottom plate.

[0013] Preferably, the reserved groove formed on the baffle plate and the arc-shaped groove formed on the bottom plate are in a corresponding relationship and are fixed by bolts.

[0014] Preferably, a plurality of threaded holes are formed on the connecting block. The connecting block is located inside the connecting frame and is bolted to the connecting frame through the plurality of threaded holes formed.

[0015] The adjusting plate can be finely adjusted to adapt to subframes of different sizes or shapes. By the bolt connection between the adjusting plate and the connecting plate, the relative position of the two can be changed, thereby adjusting the overall height or inclination of the fixture. Moreover, the arc-shaped groove on the bottom plate corresponds to the reserved groove on the baffle plate and is fixed by bolts to achieve the adjustment.

[0016] Compared with the prior art, the present utility model provides a special fixture for welding the upper piece of an automobile subframe, and has the following beneficial effects:

[0017] Through the drive of the electric cylinder, the present utility model can realize the rapid clamping and release of the upper piece of the subframe by the clamping block, improve the welding efficiency, shorten the welding cycle. At the same time, through the bolt connection between the adjusting plate and the connecting plate, this fixture device can adapt to upper pieces of subframes of different sizes and shapes, thereby significantly improving the adaptability and flexibility of the equipment, reducing the dependence on multiple fixtures, thus improving the work efficiency, and solving the problems of low efficiency and poor adaptability in the prior art when welding the upper piece of the subframe by using a fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a special fixture for welding the upper piece of an automobile subframe proposed by the present utility model;

[0019] Figure 2 It is an exploded structural schematic diagram of a special fixture for welding the upper piece of an automobile subframe proposed by the present utility model;

[0020] Figure 3Schematic diagram of the exploded structure of a special fixture for welding the upper piece of an automotive subframe proposed by the present utility model;

[0021] Figure 4 Partial schematic diagram of a special fixture for welding the upper piece of an automotive subframe proposed by the present utility model;

[0022] Figure 5 Enlarged view of the node at position A of a special fixture for welding the upper piece of an automotive subframe proposed by the present utility model.

[0023] In the figure: 1. Connecting plate; 11. Baffle; 12. Reserved groove; 13. Fixed plate; 2. Adjusting plate; 21. Bottom plate; 22. Arc groove; 23. Connecting block; 3. Fixture device; 31. Connecting frame; 32. Electric cylinder; 33. Clamping member; 331. Rack; 332. Gear; 333. Clamping block; 334. Rotating rod. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. Embodiment 1

[0026] Refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 , a special fixture for welding the upper piece of an automotive subframe, comprising: a connecting plate 1, an adjusting plate 2 is fixedly connected to the lower side of the connecting plate 1 by bolts, and a fixture device 3 is fixedly connected to one side of the adjusting plate 2 by bolts;

[0027] The fixture device 3 includes a connecting frame 31, the connecting frame 31 is fixedly connected to one side of the adjusting plate 2, two electric cylinders 32 are fixedly connected to one side of the connecting frame 31, and two clamping members 33 are arranged on the outer side of the connecting frame 31.

[0028] The clamping member 33 includes a rack 331. The rack 331 is fixed to the output end direction of the electric cylinder 32 through a piston rod. The upper and lower outer side walls of the rack 331 are both engaged with gears 332. One side of each gear 332 is fixed with a clamping block 333 through a rotary connection device. The inner side of the clamping block 333 is fixed with a rotating rod 334 through a rotary connection device. One side of the rotating rod 334 is fixed to one side of the connecting frame 31 through a rotary connection device.

[0029] The connecting frame 31 is fixed to the adjusting plate 2. The electric cylinder 32 thereon can control the piston rod to extend and retract. When the electric cylinder 32 drives the piston rod to extend and retract, it will push the rack 331 to move. The rack 331 is engaged with the gears 332. Therefore, the movement of the rack 331 will drive the gears 332 to rotate. The rotation of the gears 332 will drive the clamping blocks 333 to move through a rotary connection device (such as a hinge shaft or a pivot shaft), so as to realize the clamping and release of the upper piece of the subframe.

[0030] The rotary connection device is a hinge shaft or a pivot shaft. Embodiment 2

[0031] Based on the above Embodiment 1, referring to Figure 1 、 Figure 2 the connecting plate 1 includes a baffle 11. The inner side of the adjusting plate 2 is fitted with the baffle 11. Reserved grooves 12 are opened on both sides of the baffle 11. A fixing plate 13 is fixed to the top of the baffle 11 by screws.

[0032] The fixing plate 13 provided on the connecting plate 1 is connected to an external mobile device (which may be a welding robot or a manual mobile device) to ensure that the fixture can be stably moved to the position of the subframe to be welded.

[0033] The adjusting plate 2 includes a bottom plate 21. The outer side of the baffle 11 is fitted with the bottom plate 21. Arc-shaped grooves 22 are opened on both sides of the bottom plate 21. A connecting block 23 is fixed to one side of the bottom plate 21.

[0034] The reserved grooves 12 opened on the baffle 11 and the arc-shaped grooves 22 opened on the bottom plate 21 are in a corresponding relationship and are fixed by bolts.

[0035] A plurality of threaded holes are opened on the connecting block 23. The connecting block 23 is located inside the connecting frame 31 and is bolt-fixed to the connecting frame 31 through the plurality of threaded holes opened.

[0036] The adjusting plate 2 can be finely adjusted to adapt to subframes of different sizes or shapes. By the bolt connection between the adjusting plate 2 and the connecting plate 1, the relative positions of the two can be changed, so as to adjust the overall height or inclination of the fixture. Moreover, the arc-shaped grooves 22 on the bottom plate 21 correspond to the reserved grooves 12 on the baffle 11 and are fixed by bolts to achieve the adjustment.

[0037] Working principle: Please refer to Figures 1 - 5 As shown, first, connect the fixing plate 13 provided on the connecting plate 1 to an external mobile device (which may be a welding robot or a manual moving device) to ensure that the fixture can be stably moved to the position of the subframe to be welded. Secondly, the adjusting plate 2 can be finely adjusted to adapt to subframes of different sizes or shapes. By adjusting the bolt connection between the adjusting plate 2 and the connecting plate 1, the relative position of the two can be changed, thereby adjusting the overall height or inclination of the fixture. Moreover, the arc-shaped groove 22 on the bottom plate 21 corresponds to the reserved groove 12 on the baffle 11 and is fixed by bolts to achieve adjustment. Then, the fixture device 3 is the core part of the fixture, responsible for fixing and clamping the upper piece of the subframe. The connecting frame 31 is fixed on the adjusting plate 2, and the electric cylinder 32 thereon can be telescoped by controlling the piston rod. When the electric cylinder 32 drives the piston rod to expand and contract, it will push the rack 331 to move. The rack 331 meshes with the gear 332. Therefore, the movement of the rack 331 will drive the gear 332 to rotate, and the rotation of the gear 332 will drive the clamping block 333 to move through a rotating connection device (such as a hinge shaft or a pivot shaft), thereby realizing the clamping and releasing of the upper piece of the subframe. During the clamping process, the connection between the clamping block 333 and the rotating rod 334 increases the stability during the clamping process.

Claims

1. A special fixture for welding the upper piece of an automobile subframe, comprising: A connecting plate (1), characterized in that an adjusting plate (2) is fixed to the lower side of the connecting plate (1) by means of bolts, and a clamp device (3) is fixed to one side of the adjusting plate (2) by means of bolts; The clamp device (3) comprises a connecting frame (31), one side of the adjustment plate (2) is fixed with the connecting frame (31), one side of the connecting frame (31) is fixed with two groups of electric cylinders (32), and the outer side of the connecting frame (31) is provided with two groups of clamping components (33).

2. The special fixture for welding the upper piece of the automobile subframe according to claim 1 is characterized in that: The clamping member (33) comprises a rack (331), the rack (331) is fixed to the output end of the electric cylinder (32) via a piston rod, gears (332) are meshed on the upper and lower outer side walls of the rack (331), a clamping block (333) is fixed to one side of the gear (332) via a rotating connection device, a rotating rod (334) is fixed to the inner side of the clamping block (333) via a rotating connection device, and one side of the rotating rod (334) is fixed to one side of the connecting frame (31) via the rotating connection device.

3. The special fixture for welding the upper piece of the automobile subframe according to claim 2 is characterized in that: The rotating connection is a hinge axis or a pivot axis.

4. The special fixture for welding the upper piece of the automobile subframe according to claim 1 is characterized in that: The connecting plate (1) comprises a baffle (11), the inner side of the adjusting plate (2) is fitted with the baffle (11), both sides of the baffle (11) are provided with reserved grooves (12), and the top of the baffle (11) is fixed with a fixing plate (13) by means of screws.

5. The special fixture for welding the upper piece of the automobile subframe according to claim 4 is characterized in that: The regulating plate (2) comprises a bottom plate (21), the bottom plate (21) is attached to the outer side of the baffle (11), arc grooves (22) are provided on both sides of the bottom plate (21), and a connecting block (23) is fixed to one side of the bottom plate (21).

6. A special fixture for welding the upper piece of an automobile subframe according to claim 4 or 5, characterized in that: The reserved groove (12) provided on the baffle plate (11) corresponds to the arc groove (22) provided on the bottom plate (21), and they are fixed by bolts.

7. The special fixture for welding the upper piece of the automobile subframe according to claim 5 is characterized in that: The connection block (23) is provided with a plurality of threaded holes. The connection block (23) is located on the inner side of the connection frame (31) and is bolted to the connection frame (31) via the plurality of threaded holes.

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