A welding device for etching filter screen of vacuum cleaner

Abstract

The present invention provides a welding device for etching filter screen of vacuum cleaner, comprising a machine frame, a spot welder is arranged on the upper side of the rear end of the machine frame, the upper end of the machine frame is movably slidably provided with a displacement block, an electric cylinder is arranged on the spot welder, the piston rod end of the electric cylinder is connected with a lifting member, the middle of the lifting member is elastically slidably provided with a lifting member, the lifting member is composed of a fixed sleeve on the lower side connected to two first sliding bars on the upper side, the fixed sleeve is fixed to the lower pole of the spot welder, the left side of the upper end of the fixed sleeve extends to the left to form an arc strip, the arc strip and the lower pole are spaced and arranged coaxially. The advantages of the present invention are: the middle bending of the filter screen is automatically completed by the lifting member, the two sides of the filter screen are successively pressed against the lower pole and gradually moved to the right, and the spot welder spot welds the upper part of the filter screen which is superimposed and fitted, thereby improving work efficiency and welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of vacuum cleaners, and in particular to a welding device for etching a filter screen of a vacuum cleaner. Background Art

[0002] A vacuum cleaner is a commonly used cleaning device used to clean indoor dust and small debris. A filter assembly is usually provided in the vacuum cleaner for filtering dirt. The filter assembly is used to filter dust in the air, wherein the filter is the main functional part. In order to ensure the normal operation of other parts of the vacuum cleaner, the air entering the vacuum cleaner needs to be filtered to prevent dust and particulate matter from entering the other parts of the vacuum cleaner. In this way, a cylindrical filter is required. This cylindrical filter is generally wound with an etched filter and welded after winding. At present, the staff will take the etched filter to the lower pole of the spot welding machine, and wind it into a cylinder in accordance with the lower pole. The top of the filter is superimposed and tilted (the staff's hands cannot be too close to the spot welding). The staff gradually pushes backward while keeping the filter wound. The upper electrode of the spot welding pole gradually spot welds the superimposed part of the filter. Finally, the staff pulls the cylindrical etched filter out of the lower pole. The welding quality is difficult to guarantee and the work intensity is high. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a welding device for an etched filter screen of a vacuum cleaner, in which the middle bending of the filter screen is automatically completed by a lifting member, and the two sides of the filter screen are successively pressed against the lower pole and gradually moved to the right, and a spot welding machine spot welds the upper part of the filter screen where it is overlapped and fitted, thereby improving work efficiency and welding quality.

[0004] The present invention provides a welding device for etching filter screen of vacuum cleaner, comprising a machine frame 1, a spot welder 2 is arranged on the upper side of the rear end of the machine frame 1, a displacement block 4 is arranged on the upper end of the machine frame 1 so as to be movable left and right, an electric cylinder 6 is arranged on the spot welder 2, a lifting member 7 is connected to the piston rod end of the electric cylinder 6, a lifting member 8 is elastically slidably arranged in the middle of the lifting member 7, the lifting member 8 is composed of a fixing sleeve 8.1 on the lower side connected to two first sliding rods 8.2 on the upper side, the fixing sleeve 8.1 is fixed to the lower pole 3 of the spot welder 2, the left side of the upper end of the fixing sleeve 8.1 extends to the left to form an arc strip 8.3, there is a spacing between the arc strip 8.3 and the lower pole 3 and they are arranged coaxially, the front and rear sides of the displacement block 4 are opposite to each other. A side pressure component 9 is symmetrically arranged, a transverse movement component 10 is arranged in the middle of the displacement block 4, and a left vertical plate 11 and a right vertical plate 12 are respectively arranged on the left and right sides of the upper end of the frame 1, and the side pressure component 9 and the transverse movement component 10 are both connected to the left vertical plate 11 and the right vertical plate 12. When the lifting member 7 descends, the lifting member 7 first drives the lifting member 8 to bring the lower pole 3 to the bottom to bend the filter screen in the middle, and the lifting member 7 then drives the side pressure components 9 on both sides in turn to press the filter screens on both sides against the lower pole 3 in turn, and the lifting member 7 drives the displacement block 4 to gradually move right with the filter screen through the transverse movement component 10, and the spot welding machine 2 spot welds the filter screen passing through the arc strip 8.3.

[0005] Furthermore, the left end of the arc strip 8.3 is provided with an inclined surface 8.4, the left side of the top end of the arc strip 8.3 is provided with a square hole 8.5 for accommodating the upper electrode of the spot welding machine 2 to pass through, and the right edge of the lower end of the square hole 8.5 is provided with a rounded corner.

[0006] Furthermore, the lifting member 7 is composed of a middle connecting strip 7.1 connecting short pressure strips 7.4 and long pressure strips 7.3 on the front and rear sides, a convex portion 7.2 for elastically sliding the first slide rod 8.2 is arranged in the middle of the connecting strip 7.1, and a rack 7.5 is arranged at the rear end of the short pressure strip 7.4.

[0007] Furthermore, the side pressure assembly 9 includes a long axis 9.1 that rotates on the left vertical plate 11 and the right vertical plate 12, the left end of the long axis 9.1 is keyed with a torsion bar 9.2 that can be pressed down by the short pressure strip 7.4 or the long pressure strip 7.3, a torsion spring is connected between the torsion bar 9.2 and the right vertical plate 12, the right end of the long axis 9.1 is slidably fitted left and right and is non-rotatably provided with a connecting rod 9.3, one side of the displacement block 4 is slidably fitted with a side pressure piece 9.5 that can move back and forth, the side wall of the side pressure piece 9.5 is vertically provided with a slide groove, and the slide groove is slidably fitted with a hanging ear 9.4 that is hinged to the connecting rod 9.3.

[0008] Furthermore, the side pressure piece 9.5 is composed of a mold block on the lower side connected to a placement table on the upper side, arc-shaped push strips are symmetrically arranged on the left and right sides of the inner wall of the mold block, the push strips and the inner wall of the mold block are arranged coaxially, and the inner edge of the placement table is provided with chamfered corners.

[0009] Furthermore, the transverse movement assembly 10 includes a first screw rod 10.5 rotatable on the left vertical plate 11 and the right vertical plate 12, the lower end of the displacement block 4 is provided with a screw block 10.6 screwed to the first screw rod 10.5, the right end of the first screw rod 10.5 is keyed with a pinion 10.4, and the right vertical plate 12 is rotatably provided with a coaxially connected driving gear 10.1 and a large gear 10.2, the rack 7.5 cooperates with the driving gear 10.1, and a toothed belt 10.3 is connected between the pinion 10.4 and the large gear 10.2.

[0010] Furthermore, it also includes a guide rail 13 laterally arranged above the machine frame 1, a slider is slidably provided in the guide rail 13, a second screw driven by a motor 14 and threadedly connected to the slider is rotatably provided in the guide rail 13, a cylinder 15 is provided at the lower end of the slider, a piston rod end of the cylinder 15 is horizontally connected to a plate 16, a third slide bar 17 is elastically slidably provided around the plate 16, a pneumatic suction cup is provided at the end of the third slide bar 13, and a material frame 18 located below the pneumatic suction cup is provided at the upper end of the machine frame 1.

[0011] Furthermore, vertical bars 19 are symmetrically arranged on the front and rear sides of the right end of the flat plate 16 , and a movable groove is opened at the lower end of the vertical bar 19 , and a material-pickup piece 20 is twisted in the movable groove, and the right end surface of the movable groove is in contact with the right end surface of the material-pickup piece 20 .

[0012] Furthermore, a cushion block 5 is laterally arranged above the displacement block 4, a countersunk hole is opened at the upper end of the displacement block 4, a third sliding rod passing through the countersunk hole and slidably fitted on the displacement block 4 is vertically arranged at the lower end of the cushion block 5, and an elastic part connecting the countersunk hole and the cushion block 5 is arranged on the outer sleeve of the third sliding rod.

[0013] Furthermore, a magnet 21 for attracting the displacement block 4 is provided in the middle of the left vertical plate 11 .

[0014] The advantages of the present invention are as follows: the middle bending of the filter screen is automatically completed by the lifting member, the two sides of the filter screen are successively pressed against the lower pole and gradually moved to the right, and the spot welding machine spot welds the top of the filter screen that is superimposed and fitted, thereby improving work efficiency and welding quality; the filter screens on both sides that are successively pressed against the lower pole will be superimposed and tilted, thereby affecting the quality of spot welding, and the inclined surface can make the tilted filter screen gradually fit, and the filter screen moves back to between the arc strip and the lower pole with the side pressure member, and the top of the filter screen is superimposed and fitted; the convex part of the lifting member brings the lower pole to the bottom through the lifting member to press and bend the filter screen in the middle, the lifting member and the lower pole remain stationary, the long pressure strip and the short pressure strip successively drive the side pressure components on both sides to press the filter screens on both sides against the lower pole in turn, and the rack drives the displacement block and the components thereon to gradually move the filter screen to the right through the transverse movement component; the long pressure strip and the short pressure strip of the lifting member successively press the torsion bar, the torsion bar rotates with the connecting rod through the long axis, and the connecting rod drives the side pressure member to move to the lower pole through the hanging ear, thereby The filter screens on both sides are pressed against the lower pole successively, the top of the filter screen is overlapped and tilted, and then the torsion bar is in contact with the side walls of the long pressure strip and the short pressure strip, and the side pressure piece remains stationary; the push bar of the side pressure piece will move left and right with the filter screen, and the placement table can lay flat and position the filter screen; the rack of the lifting member drives the driving gear to rotate, and the driving gear drives the first screw to rotate through the large gear, the toothed belt, and the small gear, and the screw block driven by the first screw drives the displacement block and the filter screen to gradually move to the right, and the upper electrode of the spot welding pole passes through the square hole to spot weld the filter screen; the second screw driven by the motor drives the cylinder and the plate to move the filter screen left and right through the slider, and the filter screen is taken and placed by the cylinder and the pneumatic suction cup; the material-pickup piece moving with the plate can pull the filter screen out of the lower pole; the lower pole descends to press down the filter screen, and the pad can cushion the filter screen, thereby stabilizing the filter screen to prevent the filter screen from shifting left and right when the filter screen is bent in the middle, and the filter screen can be placed on the placement table and the pad so that the filter screen lies flat without collapsing in the middle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A perspective view of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the present invention;

[0017] Figure 3 It is a front view of the present invention;

[0018] Figure 4 A top view of the present invention;

[0019] Figure 5 for Figure 3 AA section view;

[0020] Figure 6 for Figure 4 BB cross-sectional view;

[0021] Figure 7 It is a three-dimensional diagram of the filter screen of the present invention when it is placed flat on a placement table and a cushion block;

[0022] Figure 8 It is a cross-sectional view of the lifting member of the present invention when it descends and the lower pole is pressed to the bottom;

[0023] Fig. 9 It is a cross-sectional view of the present invention when the lifting member descends and the side pressure member successively presses the two sides of the filter screen against the lower pole;

[0024] Fig.10 It is a cross-sectional view of the lifting member of the present invention when it descends and the displacement block moves rightward with the filter screen;

[0025] Fig.11 for Figure 1 Enlarged view of part C;

[0026] Fig.12 for Figure 2 A magnified view of the D portion;

[0027] Fig.13 for Figure 2 A magnified view of part E;

[0028] Fig.14 It is a structural schematic diagram of the present invention;

[0029] Fig.15 It is a structural schematic diagram of the lifting member of the present invention. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] See also Figures 1 to 15The present invention provides a welding device for etching filter screen of vacuum cleaner, which comprises a machine frame 1, a spot welding machine 2 is arranged on the upper side of the rear end of the machine frame 1, a displacement block 4 is arranged on the upper end of the machine frame 1 for sliding movement left and right, an electric cylinder 6 is arranged on the spot welding machine 2, a lifting member 7 is connected to the piston rod end of the electric cylinder 6, a lifting member 8 is elastically slidably arranged in the middle of the lifting member 7, and the lifting member 8 is composed of a fixing sleeve 8.1 on the lower side connecting two first sliding rods 8.2 on the upper side, the fixing sleeve 8.1 is fixed to the lower pole 3 of the spot welding machine 2, the left side of the upper end of the fixing sleeve 8.1 extends to the left to form an arc strip 8.3, the arc strip 8.3 and the lower pole 3 have a spacing and are arranged coaxially, the left end of the arc strip 8.3 is provided with an inclined surface 8.4, the left side of the top end of the arc strip 8.3 is provided with a square hole 8.5 for accommodating the upper electrode of the spot welding machine 2 to pass through, the right edge of the lower end of the square hole 8.5 is provided with a rounded corner, and the two sides are successively pressed against the filter screen above the lower pole to overlap and The tilted filter screen is gradually fitted with the side pressure piece, and the filter screen moves back to between the arc strip and the lower pole with the side pressure piece, and the top of the filter screen is superimposed and fitted. The upper electrode of the spot welding pole passes through the square hole to spot weld the filter screen. The front and rear sides of the displacement block 4 are symmetrically provided with side pressure components 9, and the middle of the displacement block 4 is provided with a transverse movement component 10. The left and right sides of the upper end of the frame 1 are respectively provided with a left vertical plate 11 and a right vertical plate 12. The side pressure component 9 and the transverse movement component 10 are connected to the left vertical plate 11 and the right vertical plate 12. When the lifting member 7 is lowered, the lifting member 7 first drives the lifting member 8 to bring the lower pole 3 to the bottom to bend the filter screen in the middle, and the lifting member 7 then drives the side pressure components 9 on both sides in turn to press the filter screens on both sides against the lower pole 3 in turn. The lifting member 7 drives the displacement block 4 to gradually move right with the filter screen through the transverse movement component 10, and the spot welding machine 2 spot welds the filter screen passing through the arc strip 8.3. The filter screen is placed flat on the side pressure assembly and positioned well, and the electric cylinder drives the lifting part to descend. The lifting part first drives the lifting part to descend to the bottom with the lower pole, and the filter screen is bent in the middle of the lower pole, and the two sides of the filter screen are bent, and the lower pole and the lifting part remain stationary. The lifting part then drives the side pressure assemblies on both sides in turn to press the filter screens on both sides against the lower pole in turn, and the top of the filter screen is superimposed and tilted, and the side pressure assembly remains stationary. Then the lifting part drives the displacement block and the components on it to gradually move right with the filter screen through the transverse movement assembly, and the filter screen moves back between the arc strip and the lower pole, and the top of the filter screen is superimposed and fitted, and the upper electrode of the spot welding pole passes through the square hole to spot weld the filter screen. Then the electric cylinder drives the lifting part to rise and reset, and the lifting part drives the displacement block and the components on it to move the filter screen to the left and reset through the transverse movement assembly. The lifting part drives the side pressure assemblies on both sides to reset in turn to loosen the filter screen, and the lifting part rises and resets with the lifting part and the lower pole, and the staff can remove the welded filter screen from the lower pole.

[0032] See also Figure 7 , Fig.15The lifting member 7 is composed of a middle connecting strip 7.1 connecting short pressure strips 7.4 and long pressure strips 7.3 on both sides of the front and rear. A convex portion 7.2 for elastically sliding with the first slide bar 8.2 is arranged in the middle of the connecting strip 7.1, and a rack 7.5 is arranged at the rear end of the short pressure strip 7.4. The upper end of the frame is provided with a first avoidance hole for accommodating the lifting member to pass through. The lifting member descends, and the convex portion of the lifting member brings the lower pole to the bottom through the lifting member to press and bend the filter screen in the middle. The lifting member and the lower pole remain stationary, and the long pressure strip and the short pressure strip successively drive the side pressure components on both sides to press the filter screens on both sides against the lower pole successively. The rack drives the displacement block and the components thereon to gradually move the filter screen to the right through the transverse movement component.

[0033] The side pressure assembly 9 includes a long axis 9.1 that rotates on the left vertical plate 11 and the right vertical plate 12. The left end of the long axis 9.1 is keyed with a torsion bar 9.2 that can be pressed down by a short pressure bar 7.4 or a long pressure bar 7.3. A torsion spring is connected between the torsion bar 9.2 and the right vertical plate 12. A connecting rod 9.3 is slidably fitted left and right and cannot be rotated at the right end of the long axis 9.1. A key bar is laterally provided on the inner side of the long axis. The connecting rod is slidably fitted on the long axis and the key bar so as to move left and right. The key bar can prevent the connecting rod from rotating. A side pressure piece 9.5 is slidably fitted on one side of the displacement block 4 so as to move forward and backward. A slide groove is vertically opened on the side wall of the side pressure piece 9.5. A hanging ear 9.4 of the hinged connecting rod 9.3 is slidably fitted in the slide groove. The long pressure strips and short pressure strips of the lifting part press the torsion bar downward in turn, and the torsion bar rotates with the connecting rod through the long axis. The connecting rod drives the side pressure piece to move toward the lower pole through the hanging ear, thereby pressing the filter screens on both sides against the lower pole in turn, and the top of the filter screens is overlapped and tilted up, and then the torsion bar abuts against the side walls of the long pressure strips and the short pressure strips, the side pressure piece remains stationary, and the displacement block moves the side pressure block, connecting rod, cushion block, and filter screen to the right for spot welding.

[0034] The side pressure piece 9.5 is composed of a mold block at the lower side connected to a placement table at the upper side. The left and right sides of the inner wall of the mold block are symmetrically provided with arc-shaped push strips, which are coaxially arranged with the inner wall of the mold block, and the inner edge of the placement table is provided with a chamfered corner. When the displacement block moves left and right, the push strip of the side pressure piece will move left and right with the filter, and the placement table can lay flat and position the filter.

[0035] See also Figure 2 , Fig.12The transverse moving assembly 10 includes a first screw 10.5 rotating on the left vertical plate 11 and the right vertical plate 12. The lower end of the displacement block 4 is provided with a screw block 10.6 screwed to the first screw 10.5. The right end of the first screw 10.5 is keyed with a pinion 10.4. The right vertical plate 12 is rotatably provided with a coaxially connected driving gear 10.1 and a large gear 10.2. The rack 7.5 cooperates with the driving gear 10.1. A toothed belt 10.3 is connected between the small gear 10.4 and the large gear 10.2. After the side pressure pieces on both sides press the two sides of the filter screen against the lower pole, the rack of the lifting piece drives the driving gear to rotate. The driving gear drives the first screw to rotate through the large gear, the toothed belt and the pinion. The screw block driven by the first screw gradually moves the displacement block and the filter screen to the right. The upper electrode of the spot welding pole passes through the square hole to spot weld the filter screen.

[0036] It also includes a guide rail 13 laterally arranged above the machine frame 1, a slider is slidably arranged inside the guide rail 13, a second screw driven by a motor 14 and screwed to the slider is rotatably arranged inside the guide rail 13, a cylinder 15 is arranged at the lower end of the slider, a piston rod end of the cylinder 15 is horizontally connected to a plate 16, a third slide bar 17 is elastically slidably arranged around the plate 16, a pneumatic suction cup is arranged at the end of the third slide bar 13, and a material frame 18 located below the pneumatic suction cup is arranged at the upper end of the machine frame 1. The cylinder drives the flat plate to descend with the pneumatic suction cup, and the pneumatic suction cup sucks the filter in the material frame. The cylinder drives the flat plate to rise and reset with the pneumatic suction cup and the filter. The second screw driven by the motor drives the slider to move the cylinder and the filter to the right to the bottom. The filter is between the lower pole and the placement table, and the flat plate is located above the lower pole. The third sliding bars around it are on both sides of the lower pole. The cylinder drives the flat plate to descend and then rise and reset. The filter released by the pneumatic suction cup is placed flat on the placement table. Then the second screw driven by the motor drives the slider to move the cylinder to the left and reset.

[0037] The material-pickup piece can pull out the filter screen with the movement of the plate. Vertical bars 19 are symmetrically arranged on the front and rear sides of the right end of the plate 16. A movable groove is provided at the lower end of the vertical bar 19. A material-pickup piece 20 is twisted in the movable groove. The right end surface of the movable groove fits the right end surface of the material-pickup piece 20. The filter screen that has been spot-welded is brought out by the side pressure piece. The loosened filter screen is reset as the lower pole rises. The vertical bars and the material-pickup piece move to the right with the plate to the bottom. When the material-pickup piece passes through the filter screen and the lower pole, it will slide to the right side of the filter screen through its arc surface (it will not pull the filter screen backward). Then the vertical bars and the material-pickup piece move to the left with the plate to reset. The straight surface of the material-pickup piece will pull the filter screen to the left and out of the lower pole.

[0038] A pad 5 is disposed transversely above the displacement block 4, a countersunk hole is provided at the upper end of the displacement block 4, a third slide bar passing through the countersunk hole and slidably fitted on the displacement block 4 is vertically disposed at the lower end of the pad 5, and an elastic member connecting the countersunk hole and the pad 5 is disposed on the outer sleeve of the third slide bar. A second avoidance hole for accommodating the passage of the third slide bar is disposed transversely in the middle of the frame, and the lower pole column descends to press down the filter screen, and the pad can cushion the filter screen, thereby stabilizing the filter screen to prevent the filter screen from deviating left and right when the filter screen is bent in the middle, and the filter screen can be placed on the placement table and the pad so that the filter screen lies flat without collapsing in the middle, and the elastic member has low elasticity, and when the lifting member drives the lifting member to press down with the lower pole column, the lifting member descends together with the lifting member, and after the lower pole column is pressed to the bottom, the lifting member continues to descend, and the lifting member and the lower pole column do not move.

[0039] A magnet 21 for attracting the displacement block 4 is arranged in the middle of the left vertical plate 11. The displacement block moved to the bottom left is attracted by the magnet to prevent the displacement block from moving when the rack is separated from the driving gear. The side pressure piece, the lifting piece and the cushion block are plastic parts, and a steel bar can be embedded in the lifting piece to improve the structural strength.

[0040] The specific working process of the present invention is as follows: the filter screen is stacked in the material frame, the cylinder drives the flat plate with the pneumatic suction cup to descend, the pneumatic suction cup sucks the top filter screen in the material frame, the cylinder drives the flat plate with the pneumatic suction cup and the filter screen to rise and reset, the second screw driven by the motor drives the slider with the cylinder and the filter screen to move to the right to the bottom, the filter screen is between the lower pole and the placement table, the flat plate is located above the lower pole, and the third sliding bars around it are on both sides of the lower pole. The cylinder drives the flat plate to descend and then rise and reset, the filter screen released by the pneumatic suction cup is placed flat on the placement table and the pad and positioned, and then the second screw driven by the motor drives the slider with the cylinder to move to the left and reset. Figure 7 As shown, the electric cylinder drives the lifting member to descend, and the lifting member first causes the lifting member to descend to the bottom with the lower pole, the middle of the lower pole presses and bends the filter screen, and the two sides of the filter screen bend, while the lower pole and the lifting member remain stationary. Figure 8 As shown, the long and short pressure strips of the lifting member successively press down the torsion bar, and the torsion bar rotates with the connecting rod through the long axis. The connecting rod drives the side pressure piece to move toward the lower pole through the hanging ear, so that the filter screens on both sides are successively pressed against the lower pole, and the top of the filter screen is overlapped and tilted, and then the torsion bar abuts against the side walls of the long and short pressure strips, and the side pressure piece remains stationary, as shown in FIG. Fig. 9 As shown, the rack of the lifting member drives the driving gear to rotate, and the driving gear drives the first screw to rotate through the large gear, the toothed belt, and the small gear. The screw block driven by the first screw brings the components on the displacement block to gradually move to the right, and the side pressure member brings the filter screen to gradually move to the right through the push bar. The inclined surface can make the raised filter screen gradually fit, and the filter screen moves back with the side pressure member to between the arc bar and the lower pole, and the top of the filter screen is overlapped and fitted, and the upper electrode of the spot welding pole passes through the square hole to spot weld the filter screen, as shown in FIG. Fig.10As shown, the electric cylinder then drives the lifting member to rise and reset, the rack of the lifting member drives the driving gear to reverse, the screw block drives the displacement block and the components on it to move left and reset, the push bar of the side pressure member brings the filter to move left and reset, the short pressure bar and the long pressure bar of the lifting member successively drive the side pressure members on both sides to reset to loosen the filter, the lifting member then brings the lifting member, the lower pole and the filter to rise and reset, the vertical bar and the material shifting member move to the right with the flat plate to the bottom, when the material shifting member passes through the filter and the lower pole, it will slide to the right side of the filter through its arc surface (the filter will not be shifted backward), then the vertical bar and the material shifting member move to the left and reset with the flat plate, and the straight surface of the material shifting member will shift the filter to the left and out of the lower pole.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A welding device for etching filter screen of vacuum cleaner, characterized in that: The invention comprises a machine frame, a spot welding machine is arranged on the upper side of the rear end of the machine frame, a displacement block is slidably moved left and right on the upper end of the machine frame, an electric cylinder is arranged on the spot welding machine, a lifting member is connected to the piston rod end of the electric cylinder, a lifting member is elastically slidably arranged in the middle of the lifting member, and the lifting member is composed of a fixed sleeve on the lower side connecting two first sliding bars on the upper side, the fixed sleeve is fixed to the lower pole of the spot welding machine, and the left side of the upper end of the fixed sleeve extends to the left to form an arc strip, and the arc strip and the lower pole are spaced apart and coaxially arranged, side pressure assemblies are symmetrically arranged on the front and rear sides of the displacement block, a transverse movement assembly is arranged in the middle of the displacement block, and a left vertical plate and a The right vertical plate, the side pressure assembly and the transverse movement assembly are all connected to the left vertical plate and the right vertical plate. When the lifting member descends, the lifting member first drives the lifting member to descend to the bottom with the lower pole to bend the filter screen in the middle, and the lifting member then drives the side pressure assemblies on both sides in turn to press the filter screens on both sides against the lower pole in turn. The lifting member drives the displacement block to gradually move right with the filter screen through the transverse movement assembly, and the spot welding machine spot welds the filter screen passing through the arc strip. The lifting member is composed of a middle connecting strip connecting the short pressure strips and the long pressure strips on the front and rear sides. A convex portion that allows the first slide bar to slide elastically is provided in the middle of the connecting strip, and a rack is provided at the rear end of the short pressure strip.

2. A welding device for etching filter screen of vacuum cleaner as claimed in claim 1, characterized in that: The left end of the arc strip is provided with an inclined surface, the left side of the top end of the arc strip is provided with a square hole for allowing the upper electrode of the spot welding machine to pass through, and the right edge of the lower end of the square hole is provided with a rounded corner.

3. A welding device for etching filter screen of vacuum cleaner as claimed in claim 1, characterized in that: The side pressure assembly includes a long axis that rotates on the left vertical plate and the right vertical plate, the left end of the long axis is keyed with a torsion bar that can be pressed down by the short pressure bar or the long pressure bar, a torsion spring is connected between the torsion bar and the right vertical plate, the right end of the long axis is slidably fitted with a connecting rod that is non-rotatable, one side of the displacement block is slidably fitted with a side pressure piece that can move back and forth, the side wall of the side pressure piece is vertically provided with a sliding groove, and a hanging ear that is hinged to the connecting rod is slidably fitted in the sliding groove.

4. A welding device for etching filter screen of vacuum cleaner as claimed in claim 3, characterized in that: The side pressure piece is composed of a mold block at the lower side connected to a placement platform at the upper side. Arc-shaped push strips are symmetrically arranged on the left and right sides of the inner wall of the mold block. The push strips and the inner wall of the mold block are arranged coaxially. The inner edge of the placement platform is provided with a chamfered corner.

5. A welding device for etching filter screen of vacuum cleaner as claimed in claim 1, characterized in that: The transverse movement assembly includes a first screw rod that rotates on the left vertical plate and the right vertical plate, a screw block that is screwed to the first screw rod is provided at the lower end of the displacement block, a small gear is keyed to the right end of the first screw rod, a coaxially connected driving gear and a large gear are rotatably provided on the right vertical plate, the rack cooperates with the driving gear, and a toothed belt is connected between the small gear and the large gear.

6. A welding device for etching filter screen of vacuum cleaner as claimed in claim 1, characterized in that: It also includes a guide rail laterally arranged above the machine frame, a slider is slidably provided in the guide rail, a second screw driven by a motor and threadedly connected to the slider is rotatably provided in the guide rail, a cylinder is provided at the lower end of the slider, a piston rod end of the cylinder is horizontally connected to a flat plate, a third slide rod is elastically slidably provided around the flat plate, a pneumatic suction cup is provided at the end of the third slide rod, and a material frame located below the pneumatic suction cup is provided at the upper end of the machine frame.

7. A welding device for etching filter screen of vacuum cleaner as claimed in claim 6, characterized in that: Vertical bars are symmetrically arranged on the front and rear sides of the right end of the flat plate, and a movable groove is opened at the lower end of the vertical bar. A material-pickling piece is twisted in the movable groove, and the right end surface of the movable groove is in contact with the right end surface of the material-pickling piece.

8. A welding device for etching filter screen of vacuum cleaner as claimed in claim 1, characterized in that: A pad is laterally arranged above the displacement block, a countersunk hole is opened at the upper end of the displacement block, a third sliding rod is vertically arranged at the lower end of the pad, and the third sliding rod outer sleeve is provided with an elastic part connecting the countersunk hole and the pad.

9. A welding device for etching filter screen of vacuum cleaner as claimed in claim 1, characterized in that: A magnet for attracting the displacement block is arranged in the middle of the left vertical plate.

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