阅读说明：本技术 一种铝合金工件的点焊设备 (Spot welding equipment for aluminum alloy workpiece ) 是由 辛忠来 陈武洋 于 2021-07-05 设计创作，主要内容包括：本发明涉及铝合金焊接技术领域,具体为一种铝合金工件的点焊设备,包括后座体和前座体,前座体靠近后座体一端的顶壁上开设有定位槽,后座体靠近前座体一端的顶部水平安装有顶板,顶板的顶壁上安装有两个气缸,两个气缸的输出轴均延伸至顶板的下侧并安装有压板,定位槽的底壁上开设有安装槽,安装槽的内部和定位槽的上部分别设有两个相对的弹性焊枪,两个弹性焊枪相反的一端均安装有连接板。本发明通过往复驱动机构带动活动刷和固定刷先后对铝合金工件进行刷洗和擦拭,最大限度地降低氧化膜对焊接质量的影响,设置了两个弹性焊枪,并利用同步驱动机构控制两个弹性焊枪相向移动或反向移动,弹性焊枪能够稳定地对工件施加压力从而保证焊接质量。(The invention relates to the technical field of aluminum alloy welding, in particular to spot welding equipment for an aluminum alloy workpiece, which comprises a rear seat body and a front seat body, wherein a positioning groove is formed in the top wall of one end, close to the rear seat body, of the front seat body, a top plate is horizontally arranged at the top of one end, close to the front seat body, of the rear seat body, two air cylinders are arranged on the top wall of the top plate, output shafts of the two air cylinders extend to the lower side of the top plate and are provided with pressing plates, a mounting groove is formed in the bottom wall of the positioning groove, two opposite elastic welding guns are respectively arranged inside the mounting groove and on the upper portion of the positioning groove, and a connecting plate is arranged at one end, opposite to the two elastic welding guns. The reciprocating driving mechanism drives the movable brush and the fixed brush to brush and wipe the aluminum alloy workpiece in sequence, so that the influence of an oxide film on the welding quality is reduced to the maximum extent, the two elastic welding guns are arranged, the synchronous driving mechanism is used for controlling the two elastic welding guns to move oppositely or reversely, and the elastic welding guns can stably apply pressure on the workpiece so as to ensure the welding quality.)

1. The utility model provides a spot welding equipment of aluminum alloy work piece, includes back pedestal (1) and preceding pedestal (2), its characterized in that: a positioning groove (3) is arranged on the top wall of one end of the front seat body (2) close to the rear seat body (1), a top plate (10) is horizontally arranged at the top of one end of the rear seat body (1) close to the front seat body (2), two air cylinders (9) are arranged on the top wall of the top plate (10), output shafts of the two air cylinders (9) extend to the lower side of the top plate (10) and are provided with pressing plates, the bottom wall of the positioning groove (3) is provided with a mounting groove, the interior of the mounting groove and the upper part of the positioning groove (3) are respectively provided with two opposite elastic welding guns (4), one ends of the two elastic welding guns (4) which are opposite are respectively provided with a connecting plate (5), the two connecting plates (5) both extend to the outer side of the front seat body (2), the top plate (10) is provided with a synchronous driving mechanism for controlling the two connecting plates (5) to move oppositely or reversely;

the inside of constant head tank (3) is equipped with horizontally movable frame (11), offer activity mouth (23) with movable frame (11) adaptation on the inner wall of constant head tank (3), be equipped with fixed brush (12) and activity brush (13) on the diapire at activity frame (11) both ends respectively, the internally mounted of back pedestal (1) has the reciprocal actuating mechanism who is connected with movable frame (11), activity mouth (23) are close to and have seted up stock solution chamber (14) on the diapire of activity brush (13) one side, set up guide way (18) with stock solution chamber (14) intercommunication on the inside wall of activity mouth (23), guide bar (17) with guide way (18) adaptation are all installed to the both sides of activity brush (13).

2. A spot welding apparatus for an aluminum alloy workpiece according to claim 1, characterized in that: still include dust removal mechanism, dust removal mechanism includes air exhauster (16) and hair-dryer (24), the front end of pedestal (2) in the front of air exhauster (16) fixed mounting, suction opening (15) have been seted up on being close to the inner wall of back pedestal (1) one side in constant head tank (3), install the intake pipe that extends to stock solution chamber (14) bottom on the inside wall in stock solution chamber (14), the one end and the intake pipe intercommunication of constant head tank (3) are kept away from in suction opening (15), air exhauster (16) fixed mounting is in the inside of suction opening (15).

3. A spot welding apparatus for an aluminum alloy workpiece according to claim 1, characterized in that: synchronous driving mechanism includes driving motor (6) of fixed mounting on roof (10), the output shaft of driving motor (6) extends to downside and fixedly connected with two-way screw rod (7) of roof (10), two equal thread bush of connecting plate (5) is on two-way screw rod (7), and the meshing opposite direction of two connecting plates (5) and two-way screw rod (7), two equal activity is inserted and is equipped with fixed mounting's gag lever post (8) on connecting plate (5).

4. A spot welding apparatus for an aluminum alloy workpiece according to claim 1, characterized in that: the elastic welding gun (4) comprises a fixing rod (401) fixedly connected with the connecting plate (5), the bottom end of the fixing rod (401) is connected with a gun head (402) through a spring, and the top end of the gun head (402) is provided with an insertion rod (403) movably inserted at the bottom end of the fixing rod (401).

5. A spot welding apparatus for an aluminum alloy workpiece according to claim 1, characterized in that: reciprocating drive mechanism includes step motor (20) of fixed mounting in rear seat body (1), install disc (21) that are located activity mouth (23) on the output shaft of step motor (20), it is connected with connecting rod (22) to rotate on the diapire of disc (21) periphery department, the tip swing joint of the one end of disc (21) and activity frame (11) is kept away from in connecting rod (22).

6. A spot welding apparatus for an aluminum alloy workpiece according to claim 1, characterized in that: the fixed brush (12) and the movable brush (13) are both composed of a brush plate and a sponge block, and the bottom end of the sponge block is provided with an inclined plane.

7. A spot welding apparatus for an aluminum alloy workpiece according to claim 6, characterized in that: be connected with a plurality of telescopic links (19) between the roof of activity brush (13) and the diapire of activity frame (11), every all the cover is equipped with the spring on telescopic link (19).

8. A spot welding apparatus for an aluminum alloy workpiece according to claim 1, characterized in that: the guide groove (18) consists of a transverse groove and a chute, and the bottom end of the chute is communicated with the liquid storage cavity (14).

Technical Field

The invention relates to the technical field of aluminum alloy welding, in particular to spot welding equipment for an aluminum alloy workpiece.

Background

Aluminum alloy welding refers to the welding process of aluminum alloy materials. The aluminum alloy has high strength and light weight, and the main welding processes are manual TIG welding (non-consumable electrode inert gas shielded welding), automatic TIG welding and MIG welding (consumable electrode inert gas shielded welding). The aluminum alloy plate is suitable for a spot welding mode.

Because aluminum is an active metal and can be oxidized in the air to form a layer of compact oxide film on the surface of the aluminum, the aluminum alloy is generally cleaned by using an acid solution or an alkali solution before the aluminum alloy plate is welded at the present stage, and the oxide film formed on the surface of the aluminum alloy plate is removed. However, after the cleaning is finished, a thin oxide film is formed on the surface of the aluminum alloy again, which has a certain adverse effect on the welding quality during welding, and the existing method lacks measures for treating the oxide film on the surface of the aluminum alloy during welding, which has great disadvantages.

Therefore, a spot welding device for aluminum alloy workpieces is provided.

Disclosure of Invention

The invention aims to provide spot welding equipment for aluminum alloy workpieces, wherein a reciprocating driving mechanism drives a movable brush and a fixed brush to sequentially brush and wipe the aluminum alloy workpieces, so that the influence of an oxide film on the welding quality is reduced to the maximum extent, two elastic welding guns are arranged, the synchronous driving mechanism is utilized to control the two elastic welding guns to move oppositely or reversely, and the elastic welding guns can stably apply pressure on the workpieces so as to ensure the welding quality.

In order to achieve the purpose, the invention provides the following technical scheme:

a spot welding device for aluminum alloy workpieces comprises a rear seat body and a front seat body, wherein a positioning groove is arranged on the top wall of one end of the front seat body, which is close to the rear seat body, a top plate is horizontally arranged at the top of one end of the rear seat body close to the front seat body, two air cylinders are arranged on the top wall of the top plate, output shafts of the two air cylinders extend to the lower side of the top plate and are provided with pressing plates, the pressing plates can be lowered to press workpieces by opening the two air cylinders, the stability during welding is improved, the bottom wall of the positioning groove is provided with a mounting groove, the interior of the mounting groove and the upper part of the positioning groove are respectively provided with two opposite elastic welding guns, one ends of the two opposite elastic welding guns are respectively provided with a connecting plate, the two connecting plates extend to the outer side of the front seat body, and a synchronous driving mechanism for controlling the two connecting plates to move oppositely or reversely is arranged on the top plate.

The synchronous driving mechanism drives the two elastic welding guns to move in the same direction or in the reverse direction, so that the welding is more convenient and fast, the control is convenient, and the automation degree is high.

The inside of constant head tank is equipped with the horizontally movable frame, set up the expansion mouth with the movable frame adaptation on the inner wall of constant head tank, be equipped with fixed brush and activity brush on the diapire at activity frame both ends respectively, the internally mounted of back pedestal has the reciprocal actuating mechanism who is connected with the movable frame, the stock solution chamber has been seted up on the diapire that the expansion mouth is close to activity brush one side, set up the guide way with stock solution chamber intercommunication on the inside wall of expansion mouth, the guide bar with the guide way adaptation is all installed to the both sides of activity brush.

The inside of the liquid storage cavity is filled with acid liquor or alkali liquor, the acid liquor or alkali liquor can react with an oxide film on the surface of an aluminum alloy to remove the oxide film, after the reciprocating driving mechanism is opened, the movable frame moves leftwards to scrape the surface of an aluminum alloy workpiece, treatment liquid accumulated in the movable frame escapes to react with the oxide film on the surface of the workpiece, then the movable frame moves rightwards, the fixed brush enters the positioning groove to absorb residual treatment liquid on the surface of the workpiece and clean the surface of the workpiece, in the process, the guide rod moves in the guide groove to enable the movable brush to enter the liquid storage cavity to absorb the treatment liquid, and then the movable frame moves leftwards to the initial state to wait for the next operation. Because the treatment liquid is not absorbed in the movable brush when the reciprocating driving mechanism is started for the first time, the reciprocating driving mechanism is started for one time in advance during actual operation, so that the movable brush enters the liquid storage cavity and absorbs enough treatment liquid. The design can automatically clean the surface of the workpiece before welding the aluminum alloy workpiece, remove an oxide film on the surface of the workpiece, and wipe off the residual treatment liquid on the surface of the workpiece, so that the surface of the workpiece is in a clean state, the welding quality can be obviously improved, and the phenomena of welding slag splashing and the like generated in the welding process are reduced.

Preferably, still include dust removal mechanism, dust removal mechanism includes air exhauster and hair-dryer, the front end of pedestal in the front of air exhauster fixed mounting, the suction opening has been seted up on the inner wall that the constant head tank is close to rear base body one side, install the intake pipe that extends to stock solution chamber bottom on the inside wall in stock solution chamber, the one end and the intake pipe intercommunication of constant head tank are kept away from to the suction opening, air exhauster fixed mounting is in the inside in suction opening.

The hair-dryer keeps blowing the fixed brush, accelerate the volatilization velocity of the absorbent treatment fluid of fixed brush, make it keep dry state, thereby ensure the absorption effect to the remaining treatment fluid of workpiece surface, the air exhauster then draws gas from the constant head tank, the smoke and dust that produces when blowing out the hair-dryer and welding and the treatment fluid composition of high temperature evaporation inhale, and finally discharge into the stock solution intracavity, both can retrieve volatile treatment fluid composition, also can subside the smoke and dust, the environmental protection is high-efficient, the environmental quality of during operation has been improved, the wasting of resources has also been reduced.

Preferably, the synchronous driving mechanism comprises a driving motor fixedly installed on the top plate, an output shaft of the driving motor extends to the lower side of the top plate and is fixedly connected with a bidirectional screw, the two connecting plates are sleeved on the bidirectional screw in a threaded manner, the meshing directions of the two connecting plates and the bidirectional screw are opposite, and the two connecting plates are movably inserted with limiting rods fixedly installed.

The synchronous driving mechanism during operation, driving motor drives two-way screw rod and rotates, because the meshing opposite direction of two connecting plates and two-way screw rod, consequently two connecting plates can move in opposite directions or reverse movement, the moving means depends on the direction of rotation of two-way screw rod, consequently also drive two elasticity welder and move in opposite directions or reverse movement, when two elasticity welder move in opposite directions, two elasticity welder are close to the work piece of placing in the constant head tank gradually, and finally press from both sides on the upper and lower both sides of work piece on the surface, install the welding machine in back pedestal or front bezel, two elasticity welder all are connected with the welding machine through the wire, can control the welding machine and weld the aluminum alloy work piece. After welding, the driving motor controls the bidirectional screw rod to rotate reversely, so that the two elastic welding guns are away from each other, and a welded workpiece can be taken down. The synchronous control of the two elastic welding guns is skillfully realized through the synchronous driving mechanism, the convenience in welding is improved, the automation degree is high, and the improvement of the working efficiency is facilitated.

Preferably, the elastic welding gun comprises a fixed rod fixedly connected with the connecting plate, the bottom end of the fixed rod is connected with a gun head through a spring, and the top end of the gun head is provided with a limiting insertion rod movably inserted at the bottom end of the fixed rod.

The gun head is elastically connected to the bottom end of the fixing rod, the direction of the gun head is kept through the limiting insertion rod, when the gun head is in contact with the surface of a workpiece, the gun head can retreat backwards and compress the spring, certain pressure is applied to the surface of the workpiece, welding quality is guaranteed, meanwhile, the gun head is buffered, the gun head cannot be damaged, and a lead connected with a welding machine is connected to the gun head.

Preferably, the reciprocating driving mechanism comprises a stepping motor fixedly installed in the rear seat body, a disc located in the movable opening is installed on an output shaft of the stepping motor, a connecting rod is rotatably connected to the bottom wall of the outer edge of the disc, and one end, far away from the disc, of the connecting rod is movably connected with the end portion of the movable frame.

After the step motor is started, the disc rotates to drive the end part of the connecting rod to move, so that the movable frame is driven to reciprocate left and right, the movable frame completes a reciprocating movement cycle when the step motor rotates for one circle, the initial phase state of the step motor is adjusted, and the movable frame can stop after completing a reciprocating movement cycle each time when the step motor is started for one circle. Simple structure, convenient operation has realized the control to the movable frame ingeniously, and then has realized the washing and the process of wiping to aluminum alloy workpiece surface.

Preferably, the fixed brush and the movable brush are both composed of a brush plate and a sponge block, and the bottom end of the sponge block is provided with an inclined plane.

The sponge piece absorbs water the ability reinforce, not only can save more treatment fluid, and is effectual to the treatment of aluminum alloy workpiece surface, also can absorb the remaining treatment fluid in aluminum alloy surface steadily simultaneously, and the inclined plane of its low side setting makes the sponge piece can arrive workpiece surface smoothly, is difficult for receiving the influence of work piece tip, and then reduces the wearing and tearing of sponge piece, and is stable high-efficient, long service life.

Preferably, be connected with a plurality of telescopic links between the diapire of the roof of activity brush and movable frame, every all the cover is equipped with the spring on the telescopic link.

The movable path of the movable brush is limited by the telescopic rod, so that the movable brush can only move up and down, the spring is arranged to enable the movable brush to smoothly reset, the stability of the movable brush during moving is improved, stable pressure can be provided for a workpiece when the movable opening is moved out, the cleaning effect is ensured, and when the movable opening is returned, the guide rod can smoothly enter the guide groove, the clamping is avoided, and the stable operation of equipment is ensured.

Preferably, the guide groove consists of a transverse groove and a chute, and the bottom end of the chute is communicated with the liquid storage cavity.

The guide rod enables the height of the movable brush to fall in the chute in the process of moving the movable brush to the right along with the movable brush, the movable brush enters the liquid storage cavity and smoothly absorbs treatment liquid, and the movable brush gradually leaves the liquid storage cavity to return to the initial height in the process of moving the movable brush to the left. The automatic control of the height of the movable brush is ingeniously realized, the movable brush is driven to move in the vertical direction by the aid of transverse movement of the movable brush, a control mechanism is not required to be additionally arranged, and the movable brush is stable in operation, simple and convenient.

Compared with the prior art, the invention has the beneficial effects that:

1. the reciprocating driving mechanism drives the movable frame to reciprocate, the movable brush and the fixed brush at the bottom of the movable frame are used for sequentially brushing and wiping the aluminum alloy workpiece, the oxide film on the surface of the aluminum alloy is cleaned in the shortest time before welding, the residual liquid is wiped completely, and the influence of the oxide film on the welding quality is reduced to the maximum extent.

2. When the movable frame reciprocates, the movable brush firstly enters the liquid storage cavity to be stained with the treatment liquid, then moves out to reach the surface of the workpiece to scrub the workpiece, the movable brush is elastically installed, and the movable brush descends in the backward moving process through the matching of the guide rod and the guide groove to enter the liquid storage cavity, so that the automatic control of the height of the movable brush is ingeniously realized, the structure is simple, and the work is stable.

3. Two elastic welding guns are arranged and are controlled to move oppositely or move reversely by the synchronous driving mechanism, so that the welding process can be completed quickly, the welding quality can be guaranteed by applying pressure to the workpiece stably by the elastic welding guns, and the gun heads are not easy to damage.

4. Set up the hair-dryer in the front on the pedestal, can blow to the fixed brush, the speed of volatilizing of the last absorbing treatment fluid of fixed brush with higher speed to keep the effect of cleaning of fixed brush, still set up the suction opening on the constant head tank in addition, can subside and absorb the leading-in stock solution intracavity of smoke and dust and the volatile treatment fluid that produces when welding, reduced air pollution, can also retrieve volatile treatment fluid composition simultaneously, the environmental protection is high-efficient.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a side cross-sectional view of the present invention;

FIG. 3 is a schematic front view of the present invention;

FIG. 4 is a schematic view of the back structure of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 2;

FIG. 6 is an enlarged view of the structure at B in FIG. 3;

FIG. 7 is a top view of the reciprocating drive mechanism of the present invention.

In the figure: 1. a rear seat body; 2. a front seat body; 3. positioning a groove; 4. an elastic welding gun; 401. fixing the rod; 402. a gun head; 403. Inserting a rod; 5. a connecting plate; 6. a drive motor; 7. a bidirectional screw; 8. a limiting rod; 9. a cylinder; 10. a top plate; 11. A movable frame; 12. fixing the brush; 13. a movable brush; 14. a liquid storage cavity; 15. an air suction opening; 16. an exhaust fan; 17. a guide bar; 18. a guide groove; 19. a telescopic rod; 20. a stepping motor; 21. a disc; 22. a connecting rod; 23. a movable opening; 24. an air blower.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, the present invention provides a spot welding apparatus for aluminum alloy workpieces, which has the following technical scheme:

a spot welding device for aluminum alloy workpieces comprises a rear seat body 1 and a front seat body 2, wherein a positioning groove 3 is formed in the top wall of one end, close to the rear seat body 1, of the front seat body 2 and used for placing the aluminum alloy workpieces, a top plate 10 is horizontally arranged at the top of one end, close to the front seat body 2, of the rear seat body 1, two air cylinders 9 are arranged on the top wall of the top plate 10, output shafts of the two air cylinders 9 extend to the lower side of the top plate 10 and are provided with pressing plates, the pressing plates can descend to press the workpieces by opening the two air cylinders 9, the stability during welding is improved, a mounting groove is formed in the bottom wall of the positioning groove 3, two opposite elastic welding guns 4 are respectively arranged in the mounting groove and on the upper portion of the positioning groove 3, a connecting plate 5 is respectively arranged at one end, opposite to the two connecting plates 5 extend to the outer side of the front seat body 2, a notch for moving the connecting plates 5 is formed in the front seat body 2, the top plate 10 is provided with a synchronous driving mechanism for controlling the two connecting plates 5 to move oppositely or reversely.

Referring to fig. 3, the synchronous driving mechanism includes a driving motor 6 fixedly mounted on a top plate 10, an output shaft of the driving motor 6 extends to a lower side of the top plate 10 and is fixedly connected with a bidirectional screw 7, two connecting plates 5 are both in threaded sleeve connection with the bidirectional screw 7, meshing directions of the two connecting plates 5 and the bidirectional screw 7 are opposite, and a fixedly mounted limiting rod 8 is movably inserted on each connecting plate 5.

When the synchronous driving mechanism works, the driving motor 6 drives the bidirectional screw 7 to rotate, and the meshing directions of the two connecting plates 5 and the bidirectional screw 7 are opposite, so that the two connecting plates 5 can move oppositely or move reversely, the moving mode depends on the rotating direction of the bidirectional screw 7, and therefore the two elastic welding guns 4 are also driven to move oppositely or move reversely, when the two elastic welding guns 4 move oppositely, the two elastic welding guns 4 are gradually close to workpieces placed in the positioning grooves 3 and are finally clamped on the surfaces of the upper side and the lower side of the workpieces, the welding machine is installed in the rear seat body 1 or the front seat body 2, the two elastic welding guns 4 are connected with the welding machine through leads, and the welding machine can be controlled to weld aluminum alloy workpieces. After welding, the driving motor 6 controls the bidirectional screw 7 to rotate reversely, so that the two elastic welding guns 4 are away from each other, and the welded workpiece can be taken down. The synchronous control of the two elastic welding guns 4 is skillfully realized through the synchronous driving mechanism, the convenience in welding is improved, the automation degree is high, and the improvement of the working efficiency is facilitated. And the synchronous driving mechanism has the advantages of simple structure, easy realization, stable working and difficult failure.

Referring to fig. 6, the elastic welding gun 4 includes a fixing rod 401 fixedly connected to the connecting plate 5, a gun head 402 connected to a bottom end of the fixing rod 401 through a spring, and an insertion rod 403 movably inserted into a bottom end of the fixing rod 401 and installed at a top end of the gun head 402.

The gun head 402 is elastically connected to the bottom end of the fixing rod 401, the direction of the gun head 402 is kept through the inserting rod 403, when the gun head 402 is in contact with the surface of a workpiece, the gun head 402 retracts and compresses the spring, certain pressure is applied to the surface of the workpiece, welding quality is ensured, meanwhile, the gun head 402 is buffered, the gun head 402 cannot be damaged, and a lead connected with a welding machine is connected to the gun head 402.

The inside of constant head tank 3 is equipped with horizontally movable frame 11, set up the activity mouth 23 with 11 adaptations of movable frame on the inner wall of constant head tank 3, 11 slidable mounting of movable frame are on the roof of activity mouth 23, can not drop, be equipped with fixed brush 12 and activity brush 13 on the diapire at 11 both ends of movable frame respectively, the internally mounted of back pedestal 1 has the reciprocating drive mechanism who is connected with movable frame 11, activity mouth 23 has seted up stock solution chamber 14 on being close to the diapire of activity brush 13 one side, set up the guide way 18 with stock solution chamber 14 intercommunication on the inside wall of activity mouth 23, the guide bar 17 with the 18 adaptations of guide way is all installed to the both sides of activity brush 13.

The liquid storage cavity 14 is filled with acid liquid or alkali liquid, the acid liquid or alkali liquid can react with an oxide film on the surface of an aluminum alloy to remove the oxide film, referring to fig. 2, the state shown in the figure is an initial state, after the reciprocating driving mechanism is opened, the movable frame 11 moves leftwards to scrape the surface of an aluminum alloy workpiece, the treatment liquid accumulated in the movable frame escapes to react with the oxide film on the surface of the workpiece, then the movable frame 11 moves rightwards, the fixed brush 12 enters the positioning groove 3 to absorb the treatment liquid residual on the surface of the workpiece and clean the surface of the workpiece, in the process, the guide rod 17 moves in the guide groove 18 to enable the movable brush 13 to enter the liquid storage cavity 14 to absorb the treatment liquid, and then the movable frame 11 moves leftwards back to the initial state to wait for the next operation. Since the treatment liquid is not absorbed in the movable brush 13 when the reciprocating drive mechanism is first turned on, the reciprocating drive mechanism is turned on once in advance during actual operation so that the movable brush 13 enters the liquid storage chamber 14 and absorbs enough treatment liquid. The design can automatically clean the surface of the workpiece before welding the aluminum alloy workpiece, remove an oxide film on the surface of the workpiece, and wipe off the residual treatment liquid on the surface of the workpiece, so that the surface of the workpiece is in a clean state, the welding quality can be obviously improved, and the phenomena of welding slag splashing and the like generated in the welding process are reduced.

Referring to fig. 2 and 7, as an embodiment of the present invention, the reciprocating driving mechanism includes a stepping motor 20 fixedly installed in the rear seat body 1, a disk 21 located in a movable opening 23 is installed on an output shaft of the stepping motor 20, a connecting rod 22 is rotatably connected to a bottom wall at an outer edge of the disk 21, and one end of the connecting rod 22 away from the disk 21 is movably connected to an end portion of the movable frame 11.

After the step motor 20 is turned on, the disc 21 rotates to drive the end of the connecting rod 22 to move, and further drive the movable frame 11 to reciprocate left and right, the movable frame 11 completes a cycle of reciprocating movement every time the step motor 20 rotates a circle, the initial phase state of the step motor 20 is adjusted, and the movable frame 11 stops after completing a cycle of reciprocating movement every time the step motor 20 is turned on. Simple structure, convenient operation has realized the control to movable frame 11 ingeniously, and then has realized the washing and the process of wiping to aluminum alloy workpiece surface.

Referring to fig. 2 and 5, as an embodiment of the present invention, each of the fixed brush 12 and the movable brush 13 is composed of a brush plate and a sponge block, and the bottom end of the sponge block is provided with an inclined surface.

The sponge piece absorbs water the ability reinforce, not only can save more treatment fluid, and is effectual to the treatment of aluminum alloy workpiece surface, also can absorb the remaining treatment fluid in aluminum alloy surface steadily simultaneously, and the inclined plane of its low side setting makes the sponge piece can arrive workpiece surface smoothly, is difficult for receiving the influence of work piece tip, and then reduces the wearing and tearing of sponge piece, and is stable high-efficient, long service life.

Referring to fig. 5, a plurality of telescopic rods 19 are connected between the top wall of the movable brush 13 and the bottom wall of the movable frame 11, and each telescopic rod 19 is sleeved with a spring.

The telescopic rod 19 limits the moving path of the movable brush 13, so that the movable brush can only move up and down, and meanwhile, the spring is arranged to enable the movable brush to smoothly reset, the stability of the movable brush 13 during moving is improved, stable pressure can be provided for a workpiece when the movable brush is moved out of the movable opening 23, the cleaning effect is ensured, and when the movable brush returns to the movable opening 23, the guide rod 17 can smoothly enter the guide groove 18, so that the clamping is avoided, and the stable operation of equipment is ensured.

Referring to fig. 2, as an embodiment of the present invention, the guide groove 18 is composed of a horizontal groove and a diagonal groove, and the bottom end of the diagonal groove is communicated with the reservoir chamber 14.

The guide rod 17 enters the chute to lower the height of the movable brush 13 in the process of moving the movable brush 13 to the right, the movable brush 13 enters the liquid storage cavity 14 to be smoothly absorbed into the treatment liquid, and the movable brush 13 gradually leaves the liquid storage cavity 14 to return to the initial height in the process of moving the movable brush to the left. The automatic control of the height of the movable brush 13 is skillfully realized, the movable brush 13 is driven to move in the vertical direction by the transverse movement of the movable brush 13, a control mechanism is not required to be additionally arranged, and the automatic control device is stable in operation, simple and convenient.

Further, the dust removal device comprises a dust removal mechanism, the dust removal mechanism comprises an exhaust fan 16 and a blower 24, the exhaust fan 16 is fixedly installed at the front end of the front seat body 2, an air suction opening 15 is formed in the inner wall of one side, close to the rear seat body 1, of the positioning groove 3, an air inlet pipe extending to the bottom of the liquid storage cavity 14 is installed on the inner side wall of the liquid storage cavity 14, one end, far away from the positioning groove 3, of the air suction opening 15 is communicated with the air inlet pipe, and the exhaust fan 16 is fixedly installed inside the air suction opening 15.

The blower 24 keeps blowing the fixed brush 12, the volatilization speed of the treatment liquid absorbed by the fixed brush 12 is accelerated, and the treatment liquid is kept in a dry state, so that the absorption effect of the treatment liquid remained on the surface of a workpiece is ensured, the exhaust fan 16 sucks gas from the positioning groove 3, sucks gas blown out by the blower 24, smoke generated during welding and treatment liquid components evaporated at high temperature, and finally discharges the gas into the liquid storage cavity 14, so that the volatilized treatment liquid components can be recovered, the smoke can be settled, the environment protection and the efficiency are high, the environment quality during working is improved, and the resource waste is also reduced.

The working principle is as follows: before the aluminum alloy workpiece is subjected to spot welding, the reciprocating driving mechanism is started once or for multiple times to enable the movable frame 11 to operate, the movable brush 13 absorbs enough treatment liquid, then the workpiece is placed in the positioning groove 3, the air cylinder 9 is started to compress the workpiece, then the reciprocating driving mechanism is started again to enable the movable frame 11 to complete a cycle, the movable brush 13 reaches the surface of the workpiece to clean and scrape an oxide film on the surface of the workpiece, the oxide film is removed, then the fixed brush 12 reaches the surface of the workpiece to absorb residual treatment liquid on the workpiece, and the workpiece returns to the movable opening 23 again, and in the process, the movable brush 13 also enters the liquid storage cavity 14 and is moved out to absorb enough treatment liquid again. Subsequently, the synchronous driving mechanism operates to drive the two elastic welding guns 4 towards each other to be close to the surface of the workpiece and apply proper pressure, and then the welding machine is started to weld the workpiece. After welding, the synchronous driving mechanism reversely runs to reversely drive the two elastic welding guns 4, and the elastic welding guns 4 leave the surface of the workpiece, so that the welded workpiece can be taken down to prepare for next welding operation.

The steps and the control of each device can be completed by programming the main controller, so that the automation degree is improved, the labor consumption is reduced, and the working efficiency is improved.

In this process, the blower 24 blows the fixed brush 12 to accelerate the volatilization of the treatment solution thereon, the exhaust fan 16 keeps sucking, and the fume generated during the welding and the treatment solution component evaporated at high temperature are sucked and finally discharged into the reservoir chamber 14, and when the liquid in the reservoir chamber 14 is insufficient, the treatment solution is replenished in time so that the movable brush 13 can stably absorb the treatment solution.

The electric elements in the document are electrically connected with an external main controller and 220V mains supply through a transformer, the main controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased, so that the product is more matched with and accords with the technical scheme of the invention, the product model is a technical scheme of the optimal application of the technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is familiar to the technical personnel in the field, so that the technical scheme provided by the invention can clearly obtain the corresponding use effect.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.