Clamping and fixing mechanism of welding jig

Abstract

The utility model discloses a clamping and fixing mechanism of a welding jig, which belongs to the technical field of aircraft part processing and comprises a base plate, a moving groove is arranged on the lateral portion of the base plate, an inner cavity of the moving groove is rotatably connected with a two-way screw rod, two ends of the two-way screw rod are respectively sleeved with a moving plate in a threaded mode, and the moving plate is connected with the base plate in a threaded mode. The ends of the two movable plates extend to the two sides of the base plate correspondingly and are fixedly connected with fixing bases, the top of the base plate is sleeved with the fixing bases, and clamping grooves are formed in the side portions of the fixing bases. According to the clamping device, the moving groove, the bidirectional lead screw and the moving plate are used in cooperation, the bidirectional lead screw and the moving plate are matched to drive the moving plate, the fixing base and the clamping groove to move, so that a welding piece is clamped, in addition, the bidirectional lead screw is located in an inner cavity of the moving groove, and the situation that sweeps generated by welding directly fall onto the bidirectional lead screw is avoided; and the practicability of the clamping and fixing mechanism of the welding jig is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft parts processing, and more specifically to a clamping and fixing mechanism of a welding fixture. Background Art

[0002] An airplane is a heavier-than-air aircraft that has wings and one or more engines and can fly in the atmosphere under its own power. A large number of parts need to be processed during the manufacturing of an airplane, and welding jigs are needed to clamp and fix the parts during the welding of the parts.

[0003] After searching, the utility model patent with announcement number CN218396690U discloses a welding jig for processing aircraft parts, including a base plate, a mounting frame is arranged at the bottom end of the base plate, a locking assembly is arranged on the mounting frame, a slide groove is opened on the base plate, an adjusting column is rotatably arranged in the slide groove, a motor is arranged on the side wall of the base plate to cooperate with the adjusting column, two groups of thread groups are symmetrically and oppositely arranged on the adjusting column, two sliders are threadedly connected on the adjusting column, the two sliders are matched with the slide groove, a fixed seat is arranged at the top of each slider, a clamping seat is arranged on the inner side of the two fixed seats, a detachable connecting structure is arranged between the clamping seat and the fixed seat, a clamping groove is opened on the clamping seat, and a heat dissipation structure is arranged on the side wall and the bottom wall of the clamping groove. It can be used for processing different types of aircraft parts, and has good installation stability and is easy to use.

[0004] However, the above patents still have the following shortcomings: the thread group in the slide is directly exposed to the outside, and the waste generated by welding is easy to fall onto the thread group, affecting the transmission between the thread group and the slider, and some aircraft parts are irregular in shape, which will make the clamping seat also irregular in shape. At this time, the heat absorbing plate and the heat dissipating plate are not convenient to be installed on the clamping seat, and at the same time, a variety of clamping seats need to be installed with a heat plate and a heat dissipating plate, which affects the production cost. For this reason, we propose a clamping and fixing mechanism for a welding fixture. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a clamping and fixing mechanism for a welding fixture.

[0006] In order to solve the above problems, the utility model adopts the following technical solutions:

[0007] A clamping and fixing mechanism for a welding jig comprises a base plate, a movable groove is provided on the side of the base plate, a bidirectional screw is rotatably connected to the inner cavity of the movable groove, movable plates are threadedly sleeved on both ends of the bidirectional screw, the ends of the two movable plates extend to both sides of the base plate respectively and are fixedly connected to a fixed seat, the fixed seat is sleeved on the top of the base plate, a clamping groove is provided on the side of the fixed seat, a servo motor is fixedly installed on the end of the base plate, the output shaft of the servo motor is connected to the end of the bidirectional screw, and cooling mechanisms are provided on both ends of the base plate.

[0008] As a preferred solution of the utility model, the cooling mechanism includes a support rod fixedly connected to the end of the base plate, the top of the support rod is fixedly connected to an air suction box, one end of the air suction box is fixedly sleeved with a flexible support tube, the end of the flexible support tube is fixedly connected to an air suction hood, the other end of the air suction box is fixedly installed with an exhaust fan, the input end of the exhaust fan extends to the inner cavity of the air suction box, the inner cavity of the air suction box is provided with an activated carbon plate, and the inner cavity of the air suction box is provided with a filter.

[0009] As a preferred solution of the utility model, the inner cavity of the movable groove is fixedly sleeved with a sliding rod, and the sliding rod and the movable plate are movably sleeved.

[0010] As a preferred solution of the utility model, a first elastic cloth is fixedly connected between the two movable plates, a second elastic cloth is fixedly connected to the outer side of the movable plate, the end of the second elastic cloth is connected to the inner wall of the movable groove, and the top surface and bottom surface of the first elastic cloth and the second elastic cloth are respectively in contact with the inner wall of the movable groove.

[0011] As a preferred solution of the utility model, a mounting hole is opened on the outer side of the fixing seat, a screw is fixedly connected to the outer side of the clamping groove, and the end of the screw passes through the inner cavity of the mounting hole and a nut is threadedly installed.

[0012] As a preferred solution of the utility model, a sealing door is hinged on the outer side of the air suction box, and the sides of the filter screen and the activated carbon plate are respectively in contact with the inner walls of the air suction box and the sealing door.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) In the utility model, the movable groove, the bidirectional screw and the movable plate are used in coordination with each other, and the coordination between the bidirectional screw and the movable plate is utilized to drive the movable plate, the fixed seat and the clamping groove to move, so as to clamp the welded parts. In addition, the bidirectional screw is located in the inner cavity of the movable groove, so that the waste chips generated by welding are prevented from falling directly onto the bidirectional screw, and the utility model has good practicality.

[0015] (2) In the utility model, through the coordinated use of the suction box, the flexible support tube, the suction hood, the exhaust fan, the activated carbon plate and the filter net, when welding, the suction force of the suction hood is used to suck the waste chips and odors generated by welding into the inner cavity of the suction box, the filter net is used to intercept the waste chips, the activated carbon plate is used to purify the odorous gas, and the suction force of the suction hood is used to absorb the high temperature generated during welding, thereby realizing the function of cooling the weldment, avoiding the installation of heat absorption plates and heat dissipation plates on multiple clamping grooves, and improving the working quality of the clamping and fixing mechanism of the welding fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is an exploded view of the overall structure of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the substrate of the utility model;

[0019] Figure 4 It is a cross-sectional schematic diagram of the suction box of the utility model.

[0020] Description of the numbers in the figure:

[0021] 1. Base plate; 2. Moving groove; 3. Bidirectional screw rod; 4. Moving plate; 5. Fixed seat; 6. Clamping groove; 7. Cooling mechanism; 8. Servo motor; 9. Sliding rod; 10. Support rod; 11. Suction box; 12. Flexible support tube; 13. Suction hood; 14. Exhaust fan; 15. Activated carbon plate; 16. Filter; 17. Sealing door; 18. Mounting hole; 19. Screw; 20. Nut; 21. First elastic cloth; 22. Second elastic cloth. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings 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] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] Example:

[0026] See also Figure 1-4 A clamping and fixing mechanism for a welding jig comprises a base plate 1, a movable groove 2 is provided on the side of the base plate 1, a bidirectional screw rod 3 is rotatably connected to the inner cavity of the movable groove 2, movable plates 4 are respectively threadedly sleeved on both ends of the bidirectional screw rod 3, the ends of the two movable plates 4 respectively extend to both sides of the base plate 1 and are fixedly connected with a fixed seat 5, the fixed seat 5 is sleeved on the top of the base plate 1, a clamping groove 6 is provided on the side of the fixed seat 5, a servo motor 8 is fixedly installed on the end of the base plate 1, the output shaft of the servo motor 8 is connected to the end of the bidirectional screw rod 3, and cooling mechanisms 7 are respectively provided at both ends of the base plate 1.

[0027] For details, please refer to Figure 1 , Figure 2 and Figure 4 The cooling mechanism 7 includes a support rod 10 fixedly connected to the end of the base plate 1, a suction box 11 is fixedly connected to the top of the support rod 10, a flexible support tube 12 is fixedly sleeved on one end of the suction box 11, a suction hood 13 is fixedly connected to the end of the flexible support tube 12, an exhaust fan 14 is fixedly installed on the other end of the suction box 11, an input end of the exhaust fan 14 extends to the inner cavity of the suction box 11, an activated carbon plate 15 is provided in the inner cavity of the suction box 11, and a filter screen 16 is provided in the inner cavity of the suction box 11.

[0028] In this embodiment, the filter screen 16 is used to trap the waste chips generated by welding in the inner cavity of the suction box 11, and the activated carbon plate 15 is used to absorb the odor in the hot air.

[0029] For details, please refer to Figure 3 The inner cavity of the movable groove 2 is fixedly sleeved with a sliding rod 9, and the sliding rod 9 and the movable plate 4 are movably sleeved.

[0030] In this embodiment, the movable plate 4 is limited by the cooperation between the slide rod 9 and the movable plate 4 , so that the movable plate 4 can only move along the axial direction of the bidirectional screw rod 3 .

[0031] For details, please refer to Figure 1 A first elastic cloth 21 is fixedly connected between the two movable plates 4, a second elastic cloth 22 is fixedly connected to the outer side of the movable plate 4, the end of the second elastic cloth 22 is connected to the inner wall of the movable groove 2, and the top surface and bottom surface of the first elastic cloth 21 and the second elastic cloth 22 are respectively in contact with the inner wall of the movable groove 2.

[0032] In this embodiment, the first elastic cloth 21 and the second elastic cloth 22 cooperate to protect both sides of the inner cavity of the movable groove 2 , thereby preventing dust from entering the inner cavity of the movable groove 2 .

[0033] For details, please refer to Figure 2 A mounting hole 18 is opened on the outer side of the fixing seat 5, and a screw 19 is fixedly connected to the outer side of the clamping groove 6. The end of the screw 19 passes through the inner cavity of the mounting hole 18 and a nut 20 is threadedly installed.

[0034] In this embodiment, the outer diameter of the screw 19 is equal to the inner wall of the mounting hole 18 , and the clamping groove 6 is mounted on the fixing seat 5 through the cooperation of the mounting hole 18 , the screw 19 and the nut 20 .

[0035] For details, please refer to Figure 4 A sealing door 17 is hinged on the outer side of the air suction box 11, and the sides of the filter screen 16 and the activated carbon plate 15 are respectively in contact with the inner walls of the air suction box 11 and the sealing door 17.

[0036] In this embodiment, the waste debris in the air suction box 11 is cleaned by opening the sealing door 17, and the activated carbon plate 15 is replaced at the same time.

[0037] Working principle: When in use, first install the required clamping groove 6 on the fixing seat 5 through the cooperation of the mounting hole 18, the screw 19 and the nut 20, and place the aircraft parts to be welded on the base plate 1, then start the servo motor 8 to drive the bidirectional screw 3 to rotate, and drive the fixing seat 5 and the clamping groove 6 to move through the cooperation between the bidirectional screw 3 and the movable plate 4, and use the clamping groove 6 to fix the aircraft parts, and then pull the suction hood 13 so that its end is located on the side of the welding position, at this time, the flexible support tube 12 is stretched, and finally start the exhaust fan 14 to exhaust air into the inner cavity of the suction box 11, and use the negative pressure of the inner cavity of the suction box 11 to make the suction hood 13 generate suction, and use the suction force of the suction hood 13 to draw the waste chips and odorous gases generated by welding into the inner cavity of the suction box 11, use the filter 16 to intercept the waste chips entering the suction box 11, use the activated carbon plate 15 to purify the odorous gas, and at the same time absorb the high temperature generated by welding, so as to achieve cooling of the parts.

[0038] The above is only a preferred specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.

Claims

1. A clamping and fixing mechanism for a welding jig, comprising a base plate (1), characterized in that: A movable groove (2) is provided on the side of the base plate (1), and a bidirectional screw rod (3) is rotatably connected to the inner cavity of the movable groove (2). The two ends of the bidirectional screw rod (3) are respectively threadedly sleeved with movable plates (4). The ends of the two movable plates (4) respectively extend to the two sides of the base plate (1) and are fixedly connected with a fixed seat (5). The fixed seat (5) is sleeved on the top of the base plate (1). A clamping groove (6) is provided on the side of the fixed seat (5). A servo motor (8) is fixedly installed at the end of the base plate (1). The output shaft of the servo motor (8) is connected to the end of the bidirectional screw rod (3). A cooling mechanism (7) is respectively provided at the two ends of the base plate (1).

2. The clamping and fixing mechanism of a welding jig according to claim 1, characterized in that: The cooling mechanism (7) comprises a support rod (10) fixedly connected to the end of the base plate (1), the top end of the support rod (10) is fixedly connected to an air suction box (11), one end of the air suction box (11) is fixedly sleeved with a flexible support tube (12), the end of the flexible support tube (12) is fixedly connected to an air suction hood (13), the other end of the air suction box (11) is fixedly installed with an exhaust fan (14), the input end of the exhaust fan (14) extends to the inner cavity of the air suction box (11), the inner cavity of the air suction box (11) is provided with an activated carbon plate (15), and the inner cavity of the air suction box (11) is provided with a filter screen (16).

3. The clamping and fixing mechanism of a welding jig according to claim 1, characterized in that: The inner cavity of the movable groove (2) is fixedly sleeved with a sliding rod (9), and the sliding rod (9) and the movable plate (4) are movably sleeved.

4. The clamping and fixing mechanism of a welding jig according to claim 1, characterized in that: A first elastic cloth (21) is fixedly connected between the two movable plates (4), a second elastic cloth (22) is fixedly connected to the outer side of the movable plate (4), an end of the second elastic cloth (22) is connected to the inner wall of the movable groove (2), and the top surface and bottom surface of the first elastic cloth (21) and the second elastic cloth (22) are respectively in contact with the inner wall of the movable groove (2).

5. The clamping and fixing mechanism of a welding jig according to claim 1, characterized in that: The outer side of the fixing seat (5) is provided with a mounting hole (18), the outer side of the clamping groove (6) is fixedly connected with a screw (19), the end of the screw (19) passes through the inner cavity of the mounting hole (18) and is threadedly mounted with a nut (20).

6. The clamping and fixing mechanism of a welding jig according to claim 2, characterized in that: A sealing door (17) is hingedly connected to the outer side of the air suction box (11), and the side surfaces of the filter screen (16) and the activated carbon plate (15) are respectively in contact with the inner walls of the air suction box (11) and the sealing door (17).

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