Auxiliary clamp for welding

Abstract

The utility model relates to the technical field of welding fixtures, and discloses an auxiliary fixture for welding, which comprises a base, one end of the upper surface of the base is fixedly connected with a fixed column, the other end of the upper surface of the base is provided with a through hole, a part can be conveniently and quickly clamped and fixed through a clamping mechanism, and meanwhile, the position of a movable column is convenient to adjust. The kinetic energy of the first chain wheel can be conveniently transmitted to the fourth chain wheel through the second chain wheel and the third chain wheel on the connecting shaft, and the third chain wheel can conveniently slide on the connecting shaft and rotate at the same time, so that butt welding of the parts of different specifications is facilitated; the position change of the third chain wheel is avoided under the limiting of the connecting sleeve and the connecting piece, so that the two clamping mechanisms synchronously rotate under the transmission of the rotating shaft, the labor intensity of workers for disassembling and assembling parts and adjusting angles is reduced, the butt welding quality of the parts is improved, and the welding efficiency of the parts is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding jigs, in particular to an auxiliary jig for welding. Background Technique

[0002] Mechanical design is an important part of mechanical engineering. It is the first step in mechanical production and the most important factor determining the mechanical performance. When carrying out mechanical manufacturing, welding operations need to be performed on the workpieces to be processed. In order to prevent the workpieces from moving during welding, auxiliary jigs are often used to clamp the workpieces.

[0003] In the prior art, the Chinese utility model content with the publication number: CN220260036U discloses a welding auxiliary jig for mechanical design and manufacturing, including a base, a support frame fixedly connected to the top of the base, and a support rod. Clamping mechanisms are arranged at the tops of the support frame and the support rod. A moving mechanism is arranged on one side of the top of the base away from the support frame; the clamping mechanism includes a frame fixedly installed on the top of the support frame. A first motor is fixedly connected to the top of the frame. A first adjusting lead screw extending into the interior of the frame is fixedly connected to the output shaft of the first motor. A first thread sleeve is threadedly connected to the outside of the first adjusting lead screw; for this welding auxiliary jig for mechanical design and manufacturing, the first motor drives the first adjusting lead screw to rotate, so that the first thread sleeve drives the first clamping plate to displace. Through the displacement of the first clamping plate, parts of different sizes can be clamped. By arranging two clamping mechanisms, it is convenient to use to weld two parts.

[0004] Although the jig in the above technical solution is convenient for welding and clamping two parts, the angles of the parts clamped in this technical solution are fixed. When the staff performs welding, they need to continuously adjust their own positions. At the same time, they need to flip the angles of the two parts that have not been welded yet to weld the un-welded seams. During the process of repeated disassembly and assembly, the welded parts may be disconnected again, thus affecting the welding efficiency. Therefore, we need to propose an auxiliary jig for welding. Content of the Utility Model

[0005] The purpose of the utility model is to provide an auxiliary jig for welding, which is convenient for flipping the clamped parts, thereby ensuring the stability of the parts during welding, avoiding repeatedly disassembling and replacing the angles of the parts, thereby improving the weld quality of the parts welded, with simple and convenient operation, and improving the welding efficiency of the parts, so as to solve the problems raised in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: An auxiliary fixture for welding, comprising a base, one end of the upper surface of the base is fixedly connected with a fixed column, the other end of the upper surface of the base is provided with a through hole, an activity column is slidably connected in the through hole, a turning mechanism is arranged on the opposite side of the fixed column and the activity column, and a clamping mechanism arranged symmetrically is installed on the turning mechanism;

[0007] The turning mechanism comprises two groups of rotating shafts, a connecting shaft, a first chain and a second chain. The two groups of rotating shafts are respectively rotatably connected to the upper ends of the opposite sides of the fixed column and the activity column. One end of one group of rotating shafts is fixedly connected with a first sprocket, and one end of the other group of rotating shafts is fixedly connected with a fourth sprocket. One end of the connecting shaft penetrates through the fixed column and is fixedly connected with a second sprocket. The second sprocket is in transmission connection with the first sprocket through the first chain. A third sprocket is slidably connected to the outer side of the connecting shaft. The third sprocket is in transmission connection with the fourth sprocket through the second chain. A limiting strip is arranged on the outer side of the connecting shaft.

[0008] Preferably, it further comprises a mounting plate, a second motor for driving one group of rotating shafts is installed on the lower surface of the mounting plate, and toothed turntables are fixedly connected to the ends of the two groups of rotating shafts far away from the first sprocket and the fourth sprocket.

[0009] Preferably, a connecting piece is rotatably connected to one side of the activity column, one end of the connecting shaft penetrates through the connecting piece and is rotatably connected with a fixing plate, the fixing plate is fixedly connected to the other end of the upper surface of the base, and a connecting sleeve rotatably connected with the connecting piece is fixedly connected to one side of the third sprocket.

[0010] Preferably, the clamping mechanism comprises a connecting block, a bidirectional screw rod and two groups of clamping plates. A vertical plate is integrally formed on one side of the connecting block. A mounting groove for rotatably connecting the bidirectional screw rod is provided on one side of the vertical plate. Threaded sleeves threadedly connected with the bidirectional screw rod are fixedly connected to one sides of the two groups of clamping plates.

[0011] Preferably, the upper end of the bidirectional screw rod penetrates through the vertical plate and is fixedly connected with a hand wheel. Sliding blocks slidably connected with the vertical plate are fixedly connected to the two sides of the clamping plate adjacent to the threaded sleeve. The connecting block is fixedly connected to the opposite side of the toothed turntable and the rotating shaft.

[0012] Preferably, a first motor is arranged on one side of the base, a one-way screw rod threadedly connected with the activity column is rotatably connected in the inner cavity of the through hole, one end of the one-way screw rod penetrates through the base and is driven by the first motor, and a guide rod slidably inserted with the activity column is fixedly connected in the inner cavity of the through hole.

[0013] Preferably, electric push rods are fixedly connected to opposite sides of the movable column and the fixed column. The telescopic ends of the electric push rods are fixedly connected to limiting plates, and limiting teeth that fit with the toothed turntable are arranged on the upper surfaces of the limiting plates.

[0014] Preferably, multiple groups of foot pads are fixedly connected to the lower surface of the base. The axes of the two rotating shafts are both on the same straight line, and the electric push rods are arranged above the connecting shaft.

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

[0016] The present utility model mainly realizes the cooperation among the fixed column, the movable column, the flipping mechanism and the clamping mechanism. The clamping mechanism facilitates the quick clamping and fixing of parts. At the same time, the position of the movable column can be adjusted conveniently, thus facilitating the welding work after two groups of parts are in contact. The second sprocket and the third sprocket on the connecting shaft facilitate the transmission of the kinetic energy of the first sprocket to the fourth sprocket. And the third sprocket is convenient to rotate while sliding on the connecting shaft, so as to butt-weld parts of different specifications. Under the limitation of the connecting sleeve and the connecting piece, the position change of the third sprocket is avoided, so that the two groups of clamping mechanisms rotate synchronously under the drive of the rotating shaft, reducing the labor intensity of workers for disassembling, assembling and adjusting the angle of parts, thereby improving the quality of butt-welding of parts and the welding efficiency of parts. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present utility model;

[0018] Figure 2 is the structural schematic diagram of the limiting plate of the present utility model;

[0019] Figure 3 is the structural schematic diagram of the flipping mechanism of the present utility model;

[0020] Figure 4 is the structural schematic diagram of the clamping mechanism of the present utility model;

[0021] Figure 5 is the structural schematic diagram of the connecting piece of the present utility model.

[0022] In the figure: 1, base; 2, foot; 3, through hole; 4, first motor; 5, one-way screw; 6, guide rod; 7, fixed column; 8, fixed plate; 9, movable column; 10, flip mechanism; 101, mounting plate; 102, second motor; 103, rotating shaft; 104, first sprocket; 105, toothed turntable; 106, fourth sprocket; 107, first chain; 108, second sprocket; 109, connecting shaft; 1010, limit strip; 1011, third sprocket; 1012, connecting sleeve; 11, clamping mechanism; 111, connecting block; 112, vertical plate; 113, mounting groove; 114, two-way screw; 115, hand wheel; 116, clamping plate; 117, slider; 118, screw sleeve; 12, connecting piece; 13, electric push rod; 14, limit plate; 15, limit teeth. DETAILED DESCRIPTION

[0023] 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.

[0024] See also Figures 1-5 The utility model provides a technical solution: an auxiliary clamp for welding, comprising a base 1, a fixed column 7 is fixedly connected to one end of the upper surface of the base 1, a through hole 3 is opened at the other end of the upper surface of the base 1, a movable column 9 is slidably connected in the through hole 3, a flip mechanism 10 is arranged on the opposite side of the fixed column 7 and the movable column 9, and a symmetrically arranged clamping mechanism 11 is installed on the flip mechanism 10;

[0025] The flipping mechanism 10 includes two groups of rotating shafts 103, a connecting shaft 109, a first chain 107 and a second chain. The two groups of rotating shafts 103 are rotatably connected to the upper ends of the opposite sides of the fixed column 7 and the movable column 9, respectively. One end of one group of rotating shafts 103 is fixedly connected to the first sprocket 104, and one end of the other group of rotating shafts 103 is fixedly connected to the fourth sprocket 106. One end of the connecting shaft 109 passes through the fixed column 7 and is fixedly connected to the second sprocket 108. The second sprocket 108 is transmission-connected to the first sprocket 104 through the first chain 107. The outer side of the connecting shaft 109 is slidably connected to the third sprocket 1011. The third sprocket 1011 is transmission-connected to the fourth sprocket 106 through the second chain. A limiting bar 1010 is arranged on the outer side of the connecting shaft 109.

[0026] It further includes a mounting plate 101. A second motor 102 for driving one set of rotating shafts 103 is mounted on the lower surface of the mounting plate 101. Tooth-shaped turntables 105 are fixedly connected to the ends of the two sets of rotating shafts 103 far from the first sprocket 104 and the fourth sprocket 106. The kinetic energy is provided by the second motor 102, the number of driving devices is reduced, and the production cost of the fixture is lowered.

[0027] One side of the movable column 9 is rotatably connected to a connecting member 12. One end of the connecting shaft 109 penetrates through the connecting member 12 and is rotatably connected to a fixing plate 8. The fixing plate 8 is fixedly connected to the other end of the upper surface of the base 1. A connecting sleeve 1012 rotatably connected to the connecting member 12 is fixedly connected to one side of the third sprocket 1011. The position of the third sprocket 1011 can be fixed conveniently through the connecting sleeve 1012, so that the third sprocket 1011 can slide along the limiting strip 1010 on the connecting shaft 109 while rotating, thus facilitating the transmission of the fourth sprocket 106 to rotate.

[0028] The clamping mechanism 11 includes a connecting block 111, a bidirectional screw 114 and two sets of clamping plates 116. A vertical plate 112 is integrally formed on one side of the connecting block 111. An installation groove 113 for rotatably connecting the bidirectional screw 114 is provided on one side of the vertical plate 112. Threaded sleeves 118 threadedly connected to the bidirectional screw 114 are fixedly connected to one side of the two sets of clamping plates 116. The two sets of clamping plates 116 can be driven to move relatively conveniently through the bidirectional screw 114, so as to facilitate the clamping and butt welding of parts and improve the fixing efficiency of parts.

[0029] The upper end of the bidirectional screw 114 penetrates through the vertical plate 112 and is fixedly connected to a hand wheel 115. Sliders 117 slidably connected to the vertical plate 112 are fixedly connected to the two sides of the clamping plate 116 adjacent to the threaded sleeve 118. The connecting block 111 is fixedly connected to the side of the tooth-shaped turntable 105 opposite to the rotating shaft 103. The two sets of threaded sleeves 118 can be driven to move relatively conveniently through the bidirectional screw 114 by rotating the hand wheel 115, so as to facilitate the clamping of parts by the clamping plates 116.

[0030] A first motor 4 is provided on one side of the base 1. A unidirectional screw 5 threadedly connected to the movable column 9 is rotatably connected to the inner cavity of the through hole 3. One end of the unidirectional screw 5 penetrates through the base 1 and is driven by the first motor 4. A guide rod 6 slidably inserted into the movable column 9 is fixedly connected to the inner cavity of the through hole 3. The movable column 9 can be driven to move conveniently by driving the unidirectional screw 5 through the first motor 4, so as to butt weld parts of different specifications and improve the applicable range.

[0031] On the opposite sides of the movable column 9 and the fixed column 7, electric push rods 13 are fixedly connected. The telescopic ends of the electric push rods 13 are fixedly connected with limit plates 14. The upper surfaces of the limit plates 14 are provided with limit teeth 15 that fit with the toothed turntable 105. By driving the limit plates 14 to move up and down through the electric push rods 13, the limit teeth 15 are made to fit with the toothed turntable 105, thereby improving the stability of the turning mechanism 10 after turning the parts.

[0032] A plurality of sets of cushion feet 2 are fixedly connected to the lower surface of the base 1. The axes of the two sets of rotating shafts 103 are arranged on the same straight line. The electric push rods 13 are arranged above the connecting shaft 109, ensuring that the parts fixed by the clamping mechanism 11 are in the same plane, thereby improving the welding quality.

[0033] During use, first rotate the handwheels 115 of the two sets of clamping mechanisms 11 successively, so that the handwheels 115 drive the bidirectional screw rods 114 to drive the two sets of clamping plates 116 to move relatively closer, thereby completing the clamping and fixing of the parts. The position of the movable column 9 is adjusted by driving the unidirectional screw rod 5 through the first motor 4, so that the parts on the two sets of clamping mechanisms 11 are butted, facilitating the welding work of the staff. And during welding, by controlling the electric push rod 13 to drive the limit plate 14 to descend and contact to limit the turning mechanism 10, the second motor 102 drives one of the rotating shafts 103 to rotate, and drives the first sprocket 104 to rotate through one of the rotating shafts 103. Then, under the action of the first chain 107, the second sprocket 108 on the connecting shaft 109 rotates, and under the action of the limit strip 1010, the third sprocket 1011 drives the fourth sprocket 106 on the other set of rotating shafts 103 to rotate through the second chain, so as to facilitate the synchronous rotation of the two sets of clamping mechanisms 11. After the parts to be welded are turned to the specified angle, the second motor 102 stops and the electric push rod 13 drives the limit plate 14 to reset, so that the limit teeth 15 fit into the tooth grooves outside the toothed turntable 105, thereby improving the stability during the butt welding of the parts and further improving the efficiency of the butt welding of the parts.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding auxiliary fixture, characterized in that: include: A base (1), wherein one end of the upper surface of the base (1) is fixedly connected to a fixing column (7); A through hole (3) is provided at the other end of the upper surface of the base (1), a movable column (9) is slidably connected in the through hole (3), and a flip mechanism (10) is provided on the opposite side of the fixed column (7) and the movable column (9); and a clamping mechanism (11) symmetrically arranged and mounted on the flipping mechanism (10); The flip mechanism (10) comprises two groups of rotating shafts (103), a connecting shaft (109), a first chain (107) and a second chain. The two groups of rotating shafts (103) are rotatably connected to the upper ends of opposite sides of the fixed column (7) and the movable column (9), respectively. One end of one group of rotating shafts (103) is fixedly connected to the first sprocket (104), and one end of the other group of rotating shafts (103) is fixedly connected to the fourth sprocket (106). One end of the connecting shaft (109) passes through the fixed column (7) and is fixedly connected to the second sprocket (108). The second sprocket (108) is transmission-connected to the first sprocket (104) through the first chain (107). The outer side of the connecting shaft (109) is slidably connected to the third sprocket (1011). The third sprocket (1011) is transmission-connected to the fourth sprocket (106) through the second chain. A limit bar (1010) is arranged on the outer side of the connecting shaft (109).

2. The auxiliary fixture for welding according to claim 1, characterized in that: It also comprises a mounting plate (101), the lower surface of which is mounted a second motor (102) for driving one of the sets of rotating shafts (103), and one end of the two sets of rotating shafts (103) away from the first sprocket (104) and the fourth sprocket (106) is fixedly connected to a toothed rotating disk (105).

3. A welding auxiliary fixture according to claim 2, characterized in that: One side of the movable column (9) is rotatably connected to a connecting piece (12), one end of the connecting shaft (109) passes through the connecting piece (12) and is rotatably connected to a fixing plate (8), the fixing plate (8) is fixedly connected to the other end of the upper surface of the base (1), and one side of the third sprocket (1011) is fixedly connected to a connecting sleeve (1012) rotatably connected to the connecting piece (12).

4. The auxiliary welding fixture according to claim 3, characterized in that: The clamping mechanism (11) comprises a connecting block (111), a bidirectional screw (114) and two groups of clamping plates (116); a vertical plate (112) is integrally formed on one side of the connecting block (111); a mounting groove (113) for rotationally connecting the bidirectional screw (114) is provided on one side of the vertical plate (112); and a screw sleeve (118) threadedly connected to the bidirectional screw (114) is fixedly connected to one side of the two groups of clamping plates (116).

5. The auxiliary welding fixture according to claim 4, characterized in that: The upper end of the bidirectional screw (114) passes through the vertical plate (112) and is fixedly connected to a hand wheel (115); the two sides adjacent to the clamping plate (116) and the screw sleeve (118) are fixedly connected to a slider (117) slidably connected to the vertical plate (112); and the connecting block (111) is fixedly connected to the side of the toothed turntable (105) opposite to the rotating shaft (103).

6. The auxiliary welding fixture according to claim 5, characterized in that: A first motor (4) is provided on one side of the base (1); a one-way screw rod (5) threadedly connected to a movable column (9) is rotatably connected to the inner cavity of the through hole (3); one end of the one-way screw rod (5) passes through the base (1) and is driven by the first motor (4); and a guide rod (6) slidably plugged into the movable column (9) is fixedly connected to the inner cavity of the through hole (3).

7. The auxiliary welding fixture according to claim 6, characterized in that: An electric push rod (13) is fixedly connected to the opposite side of the movable column (9) and the fixed column (7), and the telescopic end of the electric push rod (13) is fixedly connected to a limit plate (14), and the upper surface of the limit plate (14) is provided with limit teeth (15) that fit with the toothed turntable (105).

8. The welding auxiliary fixture according to claim 7, characterized in that: The lower surface of the base (1) is fixedly connected to a plurality of groups of feet (2), the axes of the two groups of rotating shafts (103) are arranged on the same straight line, and the electric push rod (13) is arranged above the connecting shaft (109).

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