CN215238975U - Can convertible clamping device for welding - Google Patents

Abstract

The utility model discloses a can convertible clamping device for welding, the on-line screen storage device comprises a base, the inside of base is provided with the holding tank, and the inside bottom of holding tank installs double-shaft motor, the lead screw is all installed through the shaft coupling to the output shaft of double-shaft motor both sides. The utility model discloses an after the one side welding of work piece is accomplished, start the rotating electrical machines, the rotating electrical machines drives the rotation of drive bevel gear, it is rotatory that drive bevel gear drives the connecting axle through the meshing effect with driven bevel gear, the connecting axle drives and rotates with the corresponding fixture of first fixing base, because of the work piece is fixed centre gripping state, can drive work piece opposite side fixture in step when one side fixture pivoted and rotate, thereby realize the automatic upset welding function of work piece positive and negative, reduce the time and the labour of artifical manual upset centre gripping, the practicality and the flexibility of device have been improved.

Description

Can convertible clamping device for welding

Technical Field

The utility model relates to a welding centre gripping technical field, in particular to can convertible clamping device for welding.

Background

Welding, also known as fusion, welding, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, in a heated, high temperature or high pressure manner, with a wide variety of energy sources for modern welding, including gas flame, electric arc, laser, electron beam, friction, ultrasonic, etc.;

chinese patent No. CN213672600U discloses a clamping device for metal welding, which comprises a case, wherein a connecting column is bolted on the left side of the top of the case, a top plate is bolted on the top of the connecting column, a cylinder is bolted on the right side of the bottom of the top plate, a welding head is bolted on a piston rod of the cylinder, and a moving mechanism is arranged in an inner cavity of the case, the clamping device for metal welding is matched with the clamping mechanism, so that a user can quickly clamp and limit a metal workpiece, the fixing effect of the device on the metal workpiece is improved, the welding precision of the metal workpiece is improved, the metal workpiece is prevented from moving in the machining process, the metal workpiece is moved inwards by the user simultaneously through the matching of the moving mechanism until the metal workpieces needing to be welded are contacted and attached with each other, and the left and right positions of the metal workpiece are limited and fixed, the welding precision of the device to the metal workpiece is improved, and the prior art scheme has the following defects: after the single face welding of work piece is accomplished, need the staff to manually take off the work piece and turn over and fix its centre gripping once more, complex operation and upset are inconvenient, have reduced the practicality of device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can convertible clamping device for welding to solve the problem of the inconvenient upset that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a can convertible clamping device for welding, includes the base, the inside of base is provided with the holding tank, and the inside bottom of holding tank installs double-shaft motor, the output shaft of double-shaft motor both sides all installs the lead screw through the shaft coupling, and the lead screw keeps away from the one end of double-shaft motor and all is connected with the inner wall of holding tank, the outside of lead screw all is overlapped and is equipped with the thread bush, and the top of thread bush installs first fixing base and second fixing base respectively, the mount is installed on the top of base, and installs the cylinder on the top of mount, the vertical internally mounted who runs through the mount of output shaft of cylinder has the connecting seat, and the soldered connection is installed to the bottom of connecting seat.

Preferably, the connecting shaft transversely penetrates through the inside of the first fixing seat, the outer side, far away from one end of the welding head, of the connecting shaft is provided with a driven bevel gear, one side, close to the driven bevel gear, of the first fixing seat is provided with a rotating motor through a support, the outer side of an output shaft of the rotating motor is provided with a driving bevel gear, and the driving bevel gear is meshed with the driven bevel gear.

Preferably, the inboard of first fixing base and second fixing base all is provided with fixture through the sliding block, fixture includes the grip slipper, and the grip slipper all installs between the inboard of sliding block, the inside of grip slipper all is provided with movable groove, and the equal movable mounting in inside in movable groove has the movable block, the centre gripping spring is all installed to the bottom of movable block, and the bottom of centre gripping spring all with the inner wall fixed connection in movable groove, the movable block is kept away from one side of sliding block and is all installed the top board, the bottom plate is all installed to the grip slipper bottom that is close to top board one side, the inside of the grip slipper on movable groove top all is provided with the thread groove, the equal movable mounting in inside of thread groove has the screw rod.

Preferably, the guide seat is installed to the one end of holding down plate, and the top of guide seat evenly is provided with the mounting groove, the installation axle is all installed to the inside of mounting groove, and all evenly installs the guide wheel in the outside of installation axle, the one end that the guide seat was kept away from to the holding down plate all articulates there is the push pedal, and the bottom of push pedal all articulates there is the hinge bar, electric telescopic handle is all installed to one side that the holding down plate bottom is close to the push pedal, and electric telescopic handle's output all installs the connecting block, the top of connecting block all articulates with the bottom of hinge bar mutually.

Preferably, one side of the second fixing seat, which is close to the welding head, is provided with a built-in groove, an electric push rod is arranged inside the built-in groove, and the output end of the electric push rod is provided with a pressing plate.

Preferably, the anti-skidding teeth are uniformly arranged on one side, away from the electric push rod, of the pressing plate, and the sections of the anti-skidding teeth are designed in a triangular shape.

Preferably, the outside of connecting seat has the exhaust tube through the support mounting, the aspiration pump is installed to one side that the mount top is close to first fixing base, and the air intake of aspiration pump is connected with the exhaust tube through the air-supply line, the air-out pipe is installed to the air outlet of aspiration pump.

Preferably, the purifying box is installed on one side of mount top far away from the aspiration pump, and the filter screen is installed on the top of purifying box inside, the bottom of purifying box inside is provided with the active carbon adsorption layer, the air outlet of aspiration pump is linked together through the inside of going out tuber pipe and purifying box.

Compared with the prior art, the beneficial effects of the utility model are that: the turnover type clamping device for welding not only realizes the function of convenient turnover, but also realizes the functions of convenient clamping and automatic discharging, and simultaneously realizes the function of waste gas treatment;

(1) after welding is completed on one surface of a workpiece, a rotating motor is started, the rotating motor drives a driving bevel gear to rotate, the driving bevel gear drives a connecting shaft to rotate through the meshing action with a driven bevel gear, the connecting shaft drives a clamping mechanism corresponding to a first fixing seat to rotate, and when the clamping mechanism on one side rotates, the clamping mechanism on the other side of the workpiece can be synchronously driven to rotate because the workpiece is in a fixed clamping state, so that the automatic overturning and welding functions of the front side and the back side of the workpiece are realized, the time and labor for manually overturning and clamping are reduced, the practicability and flexibility of the device are improved, the welding effect is enhanced, after the workpiece is overturned, an electric push rod is started, the electric push rod drives a pressing plate to contact with a corresponding clamping seat on a second fixing seat, and the friction between the pressing plate and the clamping seat is increased through the action of a plurality of groups of anti-skid teeth, so that the workpiece is not easy to slide or rotate, therefore, the stability of the device after overturning is further improved, and the welding accuracy is enhanced;

(2) the utility model further improves the practicability and the application range of the device by placing a workpiece to be welded on the lower pressing plates at two sides, pushing the movable block to move in the movable groove by the rotating screw rod through the screw connection between the rotating screw rod and the thread groove, synchronously driving the upper pressing plate to descend and clamping the workpiece, and adjusting the distance between the upper pressing plate and the lower pressing plate to be suitable for the welding workpieces with different thicknesses, after the welding is finished, rotating the screw rod again to drive the upper pressing plate to ascend and reset through the elastic action of the clamping spring, starting the electric telescopic rod at the moment, extending the output end of the electric telescopic rod and driving the hinged rod to be lifted from the inclined state to the vertical state through the relation with the hinged rod, so as to synchronously drive one end of the push plate to ascend through the position change of the hinged rod, so that one end of the bottom of the workpiece is lifted by the push plate, and at the moment, the other end of the workpiece gradually moves to the material guide seat due to the inclined action, the welding workpiece is conveniently driven to slide from the clamping mechanism through the sliding action of the plurality of groups of guide wheels, so that the automatic unloading function of the workpiece is realized, the practicability of the device is further improved, and the manual unloading carrying time and labor force of workers are reduced;

(3) through starting the aspiration pump in welding process, the harmful gas that the aspiration pump produced when will welding through exhaust tube and air-supply line absorbs and carries to the purifying box in, and the air at first filters the dust granule that wherein mix with through the filter screen, and the back absorbs the purification to harmful substance through the active carbon adsorption layer to avoid waste gas direct discharge to cause the pollution to the ring edge border, further improve the environmental quality who adds man-hour.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

fig. 2 is a schematic view of a front sectional structure of the first fixing base of the present invention;

FIG. 3 is a schematic view of a front cross-sectional structure of the second fixing base of the present invention;

FIG. 4 is a schematic side view of the second fixing base of the present invention;

fig. 5 is a schematic side sectional view of the lower platen according to the present invention;

fig. 6 is a schematic top view of the lower pressing plate of the present invention;

fig. 7 is a front view of the structure of the present invention.

The reference numerals in the figures illustrate: 1. a fixed mount; 2. a first fixed seat; 3. a base; 4. accommodating grooves; 5. a threaded sleeve; 6. a screw rod; 7. a double-shaft motor; 8. a second fixed seat; 9. a clamping mechanism; 901. a clamping seat; 902. an upper pressure plate; 903. a lower pressing plate; 904. a clamping spring; 905. a movable groove; 906. a movable block; 907. a thread groove; 908. a screw; 10. welding a head; 11. an air exhaust pipe; 12. a connecting seat; 13. a purification box; 14. an activated carbon adsorption layer; 15. a filter screen; 16. a cylinder; 17. an air outlet pipe; 18. an air pump; 19. an air inlet pipe; 20. a connecting shaft; 21. a driven bevel gear; 22. a drive bevel gear; 23. a rotating electric machine; 24. a slider; 25. a built-in groove; 26. an electric push rod; 27. pressing the plate; 28. a material guide seat; 29. mounting grooves; 30. installing a shaft; 31. a material guide wheel; 32. an electric telescopic rod; 33. connecting blocks; 34. a hinged lever; 35. a push plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides an embodiment: a clamping device for reversible welding comprises a base 3, wherein a containing groove 4 is formed in the base 3, a double-shaft motor 7 is mounted at the bottom end of the interior of the containing groove 4, output shafts on two sides of the double-shaft motor 7 are respectively provided with a lead screw 6 through a coupler, one end, far away from the double-shaft motor 7, of each lead screw 6 is connected with the inner wall of the containing groove 4, a threaded sleeve 5 is sleeved on the outer side of each lead screw 6, and a first fixing seat 2 and a second fixing seat 8 are respectively mounted at the top end of each threaded sleeve 5;

as shown in fig. 1, the screw threads of the screw rods 6 on two sides of the double-shaft motor 7 are opposite in rotating direction, so that the first fixing seat 2 and the second fixing seat 8 are close to or far away from each other, and the distance between the first fixing seat 2 and the second fixing seat 8 is adjusted so as to adapt to workpieces of different specifications.

A connecting shaft 20 transversely penetrates through the inside of the first fixed seat 2, a driven bevel gear 21 is installed on the outer side of one end, away from the welding head 10, of the connecting shaft 20, a rotating motor 23 is installed on one side, close to the driven bevel gear 21, of the first fixed seat 2 through a support, a driving bevel gear 22 is installed on the outer side of an output shaft of the rotating motor 23, and the driving bevel gear 22 is meshed with the driven bevel gear 21;

specifically, as shown in fig. 1 and 2, when in use, by starting the rotating motor 23, the model of the rotating motor 23 may be Y90S-2, and the rotating motor 23 is connected with commercial power through a wire, the rotating motor 23 drives the driving bevel gear 22 to rotate, the driving bevel gear 22 drives the connecting shaft 20 to rotate through the meshing action with the driven bevel gear 21, the connecting shaft 20 drives the clamping mechanism 9 corresponding to the first fixing seat 2 to rotate, and because the workpiece is in a fixed clamping state, the clamping mechanism 9 on one side can synchronously drive the clamping mechanism 9 on the other side of the workpiece to rotate while rotating, so that the automatic turnover welding function of the front and back sides of the workpiece is realized, and the time and labor for manual turnover clamping are reduced;

the inner sides of the first fixed seat 2 and the second fixed seat 8 are both provided with a clamping mechanism 9 through a sliding block 24, the clamping mechanism 9 comprises a clamping seat 901, the clamping seat 901 is installed between the inner sides of the sliding block 24, the clamping seat 901 is internally provided with a movable groove 905, the movable groove 905 is internally movably provided with a movable block 906, the bottom end of the movable block 906 is provided with a clamping spring 904, the bottom end of the clamping spring 904 is fixedly connected with the inner wall of the movable groove 905, one side of the movable block 906 far away from the sliding block 24 is provided with an upper pressing plate 902, the bottom end of the clamping seat 901 near the upper pressing plate 902 is provided with a lower pressing plate 903, the clamping seat 901 at the top end of the movable groove 905 is provided with a threaded groove 907, the inside of the threaded groove 907 is movably provided with a screw 908, one end of the lower pressing plate 903 is provided with a material guide seat 28, and the top end of the material guide seat 28 is uniformly provided with installation grooves 29, the mounting shaft 30 is mounted inside the mounting groove 29, the guide wheels 31 are uniformly mounted on the outer side of the mounting shaft 30, the push plate 35 is hinged to one end, away from the guide seat 28, of the lower press plate 903, the hinge rod 34 is hinged to the bottom end of the push plate 35, the electric telescopic rod 32 is mounted on one side, close to the push plate 35, of the bottom end of the lower press plate 903, the connecting block 33 is mounted at the output end of the electric telescopic rod 32, and the top end of the connecting block 33 is hinged to the bottom end of the hinge rod 34;

specifically, as shown in fig. 1, fig. 2, fig. 3, fig. 5 and fig. 6, when in use, a workpiece to be welded is placed on the lower pressing plates 903 at two sides, at this time, the rotating screw 908 pushes the movable block 906 to move in the movable groove 905 through the screw connection with the threaded groove 907, the movable block 906 synchronously drives the upper pressing plate 902 to descend and clamp the workpiece, and the distance between the upper pressing plate 902 and the lower pressing plate 903 is adjusted to be suitable for the welded workpieces with different thicknesses, so as to further improve the practicability and the application range of the device, after welding is finished, the rotating screw 908 drives the upper pressing plate 902 to ascend and reset through the elastic action of the clamping spring 904, at this time, the electric telescopic rod 32 is started, the output end of the electric telescopic rod 32 extends out and drives the hinged rod 34 to ascend from the inclined state through the relation with the hinged rod 34, so as to synchronously drive one end of the pushing plate 35 to ascend through the position change of the hinged rod 34, one end of the bottom of the workpiece is lifted by the push plate 35, the other end of the workpiece gradually moves to the guide seat 28 due to the inclination effect at the moment, and the welded workpiece is conveniently driven to slide off the clamping mechanism 9 through the sliding effect of the plurality of groups of guide wheels 31, so that the automatic unloading function of the workpiece is realized, the practicability of the device is further improved, and the time and labor force for workers to manually carry and unload the workpiece are reduced;

an internal groove 25 is formed in one side, close to the welding head 10, of the second fixing seat 8, an electric push rod 26 is installed inside the internal groove 25, a pressing plate 27 is installed at the output end of the electric push rod 26, anti-skidding teeth are evenly arranged on one side, far away from the electric push rod 26, of the pressing plate 27, and the cross sections of the anti-skidding teeth are designed in a triangular shape;

specifically, as shown in fig. 1, 3 and 4, when in use, the electric push rod 26 drives the pressing plate 27 to contact with the corresponding clamping seat 901 on the second fixing seat 8, and increases the friction force between the pressing plate and the clamping seat 901 through the action of the plurality of sets of anti-slip teeth, so that the pressing plate is not easy to slide or rotate, thereby further improving the stability of the device after being turned over and enhancing the welding accuracy;

the top end of the base 3 is provided with a fixed frame 1, the top end of the fixed frame 1 is provided with a cylinder 16, and an output shaft of the cylinder 16 vertically penetrates through the fixed frame 1 and is internally provided with a connecting seat 12;

an air suction pipe 11 is mounted on the outer side of the connecting seat 12 through a support, an air suction pump 18 is mounted on one side, close to the first fixing seat 2, of the top end of the fixing frame 1, an air inlet of the air suction pump 18 is connected with the air suction pipe 11 through an air inlet pipe 19, an air outlet pipe 17 is mounted at an air outlet of the air suction pump 18, a purification box 13 is mounted on one side, far away from the air suction pump 18, of the top end of the fixing frame 1, a filter screen 15 is mounted at the top end of the interior of the purification box 13, an active carbon adsorption layer 14 is arranged at the bottom end of the interior of the purification box 13, and the air outlet of the air suction pump 18 is communicated with the interior of the purification box 13 through the air outlet pipe 17;

specifically, as shown in fig. 1, when the welding device is used, the air pump 18 is started in the welding process, the air pump 18 absorbs harmful gas generated during welding through the air exhaust pipe 11 and the air inlet pipe 19 and conveys the harmful gas into the purification box 13, air firstly filters dust particles contained in the air through the filter screen 15, and then the air passes through the activated carbon adsorption layer 14 to absorb and purify the harmful substance, so that the pollution to the surrounding environment caused by directly discharging waste gas is avoided, and the environmental quality during processing is further improved;

and a soldering tip 10 is mounted to the bottom end of the connection socket 12.

The working principle is as follows: when the utility model is used, a workpiece to be welded is firstly placed on the lower pressing plates 903 at the two sides, the workpiece is clamped according to the descending of the workpiece, and after the clamping is finished, the air cylinder 16 is started to drive the welding head 10 to descend to weld the workpiece;

secondly, after welding one side of the workpiece, starting a rotating motor 23, driving a connecting shaft 20 to rotate through a meshing action of a driving bevel gear 22 and a driven bevel gear 21, driving a clamping mechanism 9 corresponding to a first fixed seat 2 to rotate through the connecting shaft 20, synchronously driving a clamping mechanism 9 on the other side of the workpiece to rotate while the clamping mechanism 9 on one side rotates so as to realize the automatic overturning function of the workpiece, and after the workpiece is overturned, starting an electric push rod 26 to drive a pressing plate 27 to contact with a corresponding clamping seat 901 on a second fixed seat 8, so that the workpiece is not easy to slide or rotate, and the stability of the device after overturning is improved;

finally, the suction pump 18 is started in the welding process to absorb harmful gas generated during welding and convey the harmful gas into the purification box 13, air is filtered and purified through the filter screen 15 and the activated carbon adsorption layer 14 to avoid pollution to the surrounding environment caused by direct emission of waste gas, after welding is finished, the screw 908 is rotated again to drive the upper pressure plate 902 to ascend and reset, the electric telescopic rod 32 is started to drive the hinged rod 34 to ascend from an inclined state to a vertical state, the hinged rod 34 drives one end of the push plate 35 to ascend and lift one end of the bottom of a workpiece, the other end of the workpiece gradually moves to the material guide seat 28 due to the inclined effect, the workpiece can conveniently slide off the clamping mechanism 9 through the sliding effect of the plurality of groups of material guide wheels 31, the automatic unloading function of the workpiece is achieved, and the time and labor force for manual carrying and unloading of workers are reduced.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (8)

1. The utility model provides a can convertible clamping device for welding, includes base (3), its characterized in that: the inside of base (3) is provided with holding tank (4), and the inside bottom of holding tank (4) installs double-shaft motor (7), lead screw (6) are all installed through the shaft coupling to the output shaft of double-shaft motor (7) both sides, and lead screw (6) keep away from the one end of double-shaft motor (7) and all are connected with the inner wall of holding tank (4), the outside of lead screw (6) all overlaps and is equipped with thread bush (5), and the top of thread bush (5) installs first fixing base (2) and second fixing base (8) respectively, mount (1) is installed on the top of base (3), and installs cylinder (16) on the top of mount (1), the vertical internally mounted who runs through mount (1) of output shaft of cylinder (16) has connecting seat (12), and the bottom of connecting seat (12) installs soldered connection (10).

2. The turnover type clamping device for welding as claimed in claim 1, wherein: connecting axle (20) transversely run through in the inside of first fixing base (2), and connecting axle (20) keep away from the outside of soldered connection (10) one end and install driven bevel gear (21), there is rotating electrical machines (23) one side that first fixing base (2) are close to driven bevel gear (21) through the support mounting, and driving bevel gear (22) are installed in the outside of rotating electrical machines (23) output shaft, driving bevel gear (22) and driven bevel gear (21) intermeshing.

3. The turnover type clamping device for welding as claimed in claim 1, wherein: the inner sides of the first fixing seat (2) and the second fixing seat (8) are respectively provided with a clamping mechanism (9) through a sliding block (24), the clamping mechanism (9) comprises a clamping seat (901), the clamping seat (901) is arranged between the inner sides of the sliding blocks (24), movable grooves (905) are respectively arranged in the clamping seat (901), movable blocks (906) are respectively and movably arranged in the movable grooves (905), clamping springs (904) are respectively arranged at the bottom ends of the movable blocks (906), the bottom ends of the clamping springs (904) are respectively and fixedly connected with the inner walls of the movable grooves (905), an upper pressing plate (902) is respectively arranged at one side of the movable blocks (906) far away from the sliding blocks (24), a lower pressing plate (903) is respectively arranged at the bottom end of one side of the clamping seat (901) close to the upper pressing plate (902), threaded grooves (907) are respectively arranged in the clamping seat (901) at the top ends of the movable grooves (905), the screw rods (908) are movably arranged in the thread grooves (907).

4. The turnover type clamping device for welding as claimed in claim 3, wherein: guide seat (28) are installed to the one end of holding down plate (903), and the top of guide seat (28) evenly is provided with mounting groove (29), installation axle (30) are all installed to the inside of mounting groove (29), and all evenly install guide wheel (31) in the outside of installation axle (30), the one end that guide seat (28) were kept away from in holding down plate (903) all articulates there is push pedal (35), and the bottom of push pedal (35) all articulates there is hinge bar (34), electric telescopic handle (32) are all installed to one side that holding down plate (903) bottom is close to push pedal (35), and electric telescopic handle's (32) output all installs connecting block (33), the top of connecting block (33) all articulates with the bottom of hinge bar (34) mutually.

5. The turnover type clamping device for welding as claimed in claim 1, wherein: one side, close to the welding head (10), of the second fixing seat (8) is provided with an internal groove (25), an electric push rod (26) is installed inside the internal groove (25), and a pressing plate (27) is installed at the output end of the electric push rod (26).

6. The turnover type clamping device for welding as claimed in claim 5, wherein: and anti-skidding teeth are uniformly arranged on one side, away from the electric push rod (26), of the pressing plate (27), and the sections of the anti-skidding teeth are designed in a triangular mode.

7. The turnover type clamping device for welding as claimed in claim 1, wherein: the outside of connecting seat (12) has exhaust tube (11) through the support mounting, mounting (1) top is close to one side of first fixing base (2) and installs aspiration pump (18), and the air intake of aspiration pump (18) is connected with exhaust tube (11) through air-supply line (19), air outlet pipe (17) is installed to the air outlet of aspiration pump (18).

8. The turnover type welding clamping device as claimed in claim 7, wherein: purification case (13) are installed to one side that air pump (18) were kept away from on mount (1) top, and filter screen (15) are installed on the inside top of purification case (13), the inside bottom of purification case (13) is provided with activated carbon adsorption layer (14), the air outlet of air pump (18) is linked together through the inside of going out tuber pipe (17) and purification case (13).

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