Aluminum alloy frame welding forming device and method

Abstract

The present invention discloses a device and method for welding and forming aluminum alloy frames. The present invention relates to the technical field of welding and forming aluminum alloy frames. A grinding assembly is provided on the workbench surface for simultaneously grinding off burrs on U-shaped aluminum alloy parts and strip-shaped aluminum alloy parts. A tooling assembly is provided on the workbench surface for positioning, positioning, and securing the strip-shaped aluminum alloy parts. The tooling assembly is located to the right of the grinding assembly. A welding assembly is also provided on the workbench surface for simultaneously welding the left and right strips of the U-shaped aluminum alloy part to the strip-shaped aluminum alloy part. The present invention has the beneficial effects of significantly improving the welding quality and efficiency of aluminum alloy frames.

Description

Technical Field

[0001] The present invention relates to the technical field of welding and forming aluminum alloy frames, and in particular to a device and method for welding and forming aluminum alloy frames. Background Art

[0002] The structure of an aluminum alloy frame is as follows Figure 1~Figure 2 As shown, the overall shape is a frame, and the aluminum alloy frame includes a strip aluminum alloy part 1 and a U-shaped aluminum alloy part 2. The left end face of the left side bar 3 of the U-shaped aluminum alloy part 2 is flush with the left end face of the strip aluminum alloy part 1, and a straight weld scar A4 is formed at the left and right contact points between the left side bar 3 and the strip aluminum alloy part 1. The right end face of the right side bar 5 of the U-shaped aluminum alloy part 2 is flush with the right end face of the strip aluminum alloy part 1, and a straight weld scar B6 is formed at the left and right contact points between the right side bar 5 and the strip aluminum alloy part 1.

[0003] This aluminum alloy frame can be used to assemble electrical cabinets, which is the core component of electrical cabinets. Due to the large market demand for electrical cabinets, the demand for corresponding aluminum alloy frames has also increased accordingly. The method of welding and forming aluminum alloy frames in a certain workshop is:

[0004] S1, the worker takes out a Figure 3~Figure 4 The strip-shaped aluminum alloy part 1 shown is placed flat on the table of the machine;

[0005] S2, the worker takes out a Figure 5~Figure 6 As shown in the U-shaped aluminum alloy part 2, the worker places the left side bar 3 and the right side bar 5 of the U-shaped aluminum alloy part 2 on the top surface of the strip aluminum alloy part 1, and ensures that the left end surface of the left side bar 3 is flush with the left end surface of the strip aluminum alloy part 1. At the same time, ensure that the right end surface of the right side bar 5 is flush with the right end surface of the strip aluminum alloy part 1, thereby achieving the positioning of the U-shaped aluminum alloy part 2 on the top surface of the strip aluminum alloy part 1, as shown in FIG. Figure 7 As shown;

[0006] S3. The worker uses a pressure plate of a fixture to press on the top surface of the U-shaped aluminum alloy part 2 to ensure that the position between the U-shaped aluminum alloy part 2 and the strip-shaped aluminum alloy part 1 remains unchanged;

[0007] S4. Weld the left side bar 3 of the U-shaped aluminum alloy part 2 to the strip-shaped aluminum alloy part 1. The specific steps are as follows:

[0008] S41. The worker operates the laser welding machine to align the laser welding head 7 with the left contact point between the left strip 3 and the strip-shaped aluminum alloy part 1. Figure 8 As shown, the laser welding machine is then turned on, and the laser welding head 7 is moved forward linearly. The laser beam emitted by the laser welding head 7 forms a linear weld scar A4 at the left contact point between the left strip 3 and the strip-shaped aluminum alloy part 1, as shown in FIG. Figure 9 As shown;

[0009] S42, the worker operates the laser welding machine to align the laser welding head 7 with the right contact point between the left side bar 3 and the strip-shaped aluminum alloy part 1, as shown in FIG. Figure 10 As shown, the laser welding machine is then turned on, and the laser welding head 7 is moved forward linearly. The laser beam emitted by the laser welding head 7 forms a linear weld scar A4 at the right contact point between the left strip 3 and the strip-shaped aluminum alloy part 1, as shown in FIG. Figure 11 As shown, the left side bar 3 of the U-shaped aluminum alloy part 2 is finally welded to the bar-shaped aluminum alloy part 1;

[0010] S5, the worker repeats the operation of step S4 once, and then welds the right side bar 5 of the U-shaped aluminum alloy part 2 to the strip aluminum alloy part 1, thereby finally welding and forming a desired aluminum alloy frame. The structure of the welded aluminum alloy frame is as follows: Figure 1~Figure 2 As shown;

[0011] S6. The worker repeats steps S1 to S5 multiple times to continuously weld and form multiple required aluminum alloy frames.

[0012] However, although the welding method used in the workshop can weld and form the required aluminum alloy frame, in actual operation, it still reflects the following technical defects:

[0013] I. In step S2, since the bottom surfaces of the left side bar 3 and the right side bar 5 of the U-shaped aluminum alloy part 2 have burrs, and there are burrs on the top surface of the strip aluminum alloy part 1, when the worker positions the U-shaped aluminum alloy part 2 on the top surface of the strip aluminum alloy part 1, the burrs pad the left side bar 3 and the right side bar 5, thereby forming a gap 8 between the bottom surfaces of the left side bar 3 and the right side bar 5 and the top surface of the strip aluminum alloy part 1, as shown in FIG. Figure 12 As shown, the contact area between the linear weld scar A4 formed by subsequent welding and the left bar 3 and the strip-shaped aluminum alloy part 1 is small [because the width of the laser beam emitted by the laser welding head 7 is fixed]. At the same time, the contact area between the linear weld scar B6 formed by subsequent welding and the right bar 5 and the strip-shaped aluminum alloy part 1 is small. Due to the small contact area, the U-shaped aluminum alloy part 2 is not firmly welded to the strip-shaped aluminum alloy part 1, thereby reducing the welding quality of the aluminum alloy frame and correspondingly affecting the mechanical strength of the aluminum alloy frame.

[0014] II. In step S4, the worker needs to operate the laser welding machine twice before the laser welding head 7 of the laser welding machine can weld the left side bar 3 of the U-shaped aluminum alloy part 2 to the bar-shaped aluminum alloy part 1. In addition, the worker needs to operate the laser welding machine twice before the laser welding head 7 of the laser welding machine can weld the right side bar 5 of the U-shaped aluminum alloy part 2 to the bar-shaped aluminum alloy part 1. That is to say, a total of four processes are required to weld the U-shaped aluminum alloy part 2 to the bar-shaped aluminum alloy part 1, which takes a long time to weld and form an aluminum alloy frame, which undoubtedly reduces the welding efficiency of the aluminum alloy frame.

[0015] Therefore, there is an urgent need for a welding forming device and method that can greatly improve the welding quality and efficiency of aluminum alloy frames. Summary of the Invention

[0016] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a welding forming device and method for an aluminum alloy frame.

[0017] The objectives of the present invention are achieved through the following technical solutions: a welding and forming device for an aluminum alloy frame, comprising a workbench, a grinding assembly for simultaneously grinding off burrs on a U-shaped aluminum alloy part and a strip-shaped aluminum alloy part provided on the workbench surface, a tooling assembly for positioning, positioning, and fixing the strip-shaped aluminum alloy part provided on the workbench surface, the tooling assembly being located on the right side of the grinding assembly; a welding assembly for simultaneously welding the left and right strips of the U-shaped aluminum alloy part to the strip-shaped aluminum alloy part also being provided on the workbench surface, the welding assembly being located at the upper right corner of the tooling assembly;

[0018] The tooling assembly includes a drive motor fixedly mounted on the bottom surface of the workbench, a turntable fixedly mounted on the output shaft of the drive motor, and a feed cylinder fixedly mounted on the turntable. The piston rod of the feed cylinder extends to the left, and a bending piece is fixedly mounted on the extended end. A lifting cylinder is fixedly mounted on the bottom surface of a support plate below the bending piece. The piston rod of the lifting cylinder passes through the lower support plate upward, and a positioning platform is fixedly mounted on the extended end. A positioning groove is formed on the top surface of the positioning platform.

[0019] A servo motor is fixed on the top surface of the upper support plate of the bending part, the output shaft of the servo motor extends to the left, and a connecting plate is fixed on the extended end, a channel steel is fixed on the top surface of the connecting plate, and a stopper is welded in the channel steel. A locking cylinder is fixed on the bottom surface of the channel steel, the piston rod of the locking cylinder extends to the left, and an L-shaped locking block is fixed on the extended end, and the L-shaped locking block is opposite to the stopper on the left and right.

[0020] A plurality of support frames supported on the ground are fixedly arranged on the bottom surface of the workbench.

[0021] The positioning groove of the positioning platform matches the outer contour of the strip-shaped aluminum alloy piece, and the width of the channel steel cavity is equal to the width of the U-shaped aluminum alloy piece.

[0022] The welding assembly includes a vertical plate fixed on the workbench surface and a pushing cylinder fixed on the rear end surface of the vertical plate. The piston rod of the pushing cylinder passes through the vertical plate forward, and a push plate is fixed on the extended end. A horizontal laser welding head A and an inclined laser welding head A are fixed on the front end surface of the push plate and at its right end. A horizontal laser welding head B and an inclined laser welding head B are fixed on the front end surface of the push plate and at its left end. The other ends of the four laser welding heads are respectively connected to a laser welding machine.

[0023] The horizontal laser welding head A and the horizontal laser welding head B are symmetrical about the vertical plate, and the inclined laser welding head A and the inclined laser welding head B are symmetrical about the vertical plate.

[0024] The grinding assembly includes a bracket fixed on the workbench surface, an upper belt grinder and a lower belt grinder respectively arranged on the right end surface of the bracket, the upper belt grinder is opposite to the channel steel on the left and right, and the lower belt grinder is opposite to the positioning platform on the left and right;

[0025] The upper belt grinder includes a frame fixedly mounted on the right end surface of the bracket, an active roller and a driven roller rotatably mounted in the frame, an abrasive belt is installed between the active roller and the driven roller, a grinding motor is fixedly mounted on the rear end surface of the frame, and the output shaft of the grinding motor is connected to the rear end of the active roller.

[0026] The welding forming device further includes a controller, which is electrically connected to the driving motor, the servo motor, the grinding motor, the feeding cylinder, the lifting cylinder and the locking cylinder via signal lines.

[0027] A welding forming method for an aluminum alloy frame comprises the following steps:

[0028] S1. Positioning of a strip of aluminum alloy: A worker takes out a strip of aluminum alloy and inserts it into the positioning groove of the positioning table of the tooling assembly. Since the positioning groove of the positioning table matches the outer contour of the strip of aluminum alloy, the strip of aluminum alloy is positioned. At this time, the top surface of the strip of aluminum alloy is flush with the lower edge of the sanding belt of the upper belt grinder.

[0029] S2. Positioning and fixing of U-shaped aluminum alloy parts. The specific steps are as follows:

[0030] S21. A worker takes out a U-shaped aluminum alloy part, positions the left and right strips of the U-shaped aluminum alloy part upward, and then inserts the U-shaped aluminum alloy part into the channel steel of the tooling assembly. Since the width of the channel steel cavity is equal to the width of the U-shaped aluminum alloy part, the U-shaped aluminum alloy part is positioned correctly. At this point, the top surfaces of the left and right strips of the U-shaped aluminum alloy part are flush with the lower edge band of the sanding belt of the upper belt grinder.

[0031] S22. The worker controls the piston rod of the tooling assembly's locking cylinder to retract rightward, causing the piston rod to move the L-shaped locking block rightward. The L-shaped locking block then moves toward the U-shaped aluminum alloy part. When the piston rod of the locking cylinder is fully retracted, the U-shaped aluminum alloy part is precisely secured between the stopper and the L-shaped locking block.

[0032] S3, grinding off the burrs on the top surface of the strip-shaped aluminum alloy part, and grinding off the burrs on the top surfaces of the left and right strips of the U-shaped aluminum alloy part. The specific operation steps are as follows:

[0033] S31, controlling the grinding motors of the lower belt grinder and the upper belt grinder to start, the grinding motors drive the active roller to rotate, and the active roller drives the sanding belt installed between the active roller and the driven roller to rotate;

[0034] S32. The piston rod of the feed cylinder of the control tooling assembly extends to the left, and the piston rod drives the bending part to move to the left. The bending part drives the lifting cylinder, the positioning table, the servo motor, and the channel steel to move to the left synchronously. The positioning table drives the strip aluminum alloy part to move toward the lower side belt of the lower belt grinder. At the same time, the channel steel drives the U-shaped aluminum alloy part to move toward the lower side belt of the upper belt grinder.

[0035] When the piston rod of the feed cylinder is fully extended, the top surface of the strip aluminum alloy part contacts the lower side belt of the sanding belt of the lower sanding belt grinder, and the lower side belt of the sanding belt in a rotating state grinds the burrs on the top surface of the strip aluminum alloy part. At the same time, the top surfaces of the left and right strips of the U-shaped aluminum alloy part both contact the lower side belt of the sanding belt of the upper sanding belt grinder, and the lower side belt of the sanding belt in a rotating state grinds the burrs on the top surfaces of the left and right strips of the U-shaped aluminum alloy part.

[0036] S33. After grinding for 20 to 30 seconds, the grinding motors of the lower belt grinder and the upper belt grinder are controlled to be turned off, thereby finally grinding away the burrs on the top surface of the strip-shaped aluminum alloy part. At the same time, the burrs on the top surfaces of the left and right strips of the U-shaped aluminum alloy part are also ground away.

[0037] S4. After polishing, the piston rod of the feed cylinder is retracted to the right, and the piston rod drives the bending part to move to the right. The bending part drives the strip aluminum alloy part and the U-shaped aluminum alloy part to move to the right synchronously, so that the strip aluminum alloy part and the U-shaped aluminum alloy part are reset;

[0038] Then the drive motor is controlled to start, the drive motor drives the turntable to rotate, the turntable drives the feed cylinder and the bending part to rotate synchronously, the bending part drives the lifting cylinder, the positioning table, the servo motor and the channel steel to rotate synchronously, and then drives the strip aluminum alloy part and the U-shaped aluminum alloy part to rotate synchronously. When the strip aluminum alloy part and the U-shaped aluminum alloy part rotate 180 degrees, the controller controls the drive motor to turn off;

[0039] S5. The servo motor of the control tooling assembly is started. The servo motor drives the connecting plate to rotate. The connecting plate drives the channel steel to rotate. The channel steel drives the U-shaped aluminum alloy part fixed therein to rotate synchronously. When the U-shaped aluminum alloy part rotates 180°, the controller controls the servo motor to turn off. At this time, the left and right bars of the U-shaped aluminum alloy part are both facing the bar aluminum alloy part.

[0040] S6. The piston rod of the lifting cylinder controlling the tooling assembly extends upward, the piston rod drives the positioning platform to move upward, and the positioning platform drives the strip-shaped aluminum alloy part to move upward. The strip-shaped aluminum alloy part moves toward the left and right bars of the U-shaped aluminum alloy part. When the piston rod of the lifting cylinder is fully extended, the bottom surfaces of the left and right bars are in contact with the top surface of the strip-shaped aluminum alloy part. At this time, the strip-shaped aluminum alloy part and the U-shaped aluminum alloy part are both at the front side of the welding assembly.

[0041] S7. The piston rod of the push cylinder controlling the welding assembly extends forward, and the piston rod drives the push plate to move forward. The push plate drives the horizontal laser welding head A, the inclined laser welding head A, the horizontal laser welding head B, and the inclined laser welding head B thereon to move forward. After the push plate moves forward for a certain distance, the horizontal laser welding head A and the inclined laser welding head A are respectively aligned with the right contact point and the left contact point formed between the strip-shaped aluminum alloy part and the left strip. At the same time, the horizontal laser welding head B and the inclined laser welding head B are respectively aligned with the left contact point and the right contact point formed between the strip-shaped aluminum alloy part and the right strip.

[0042] S8. Control the laser welding machines connected to the horizontal laser welding head A, the inclined laser welding head A, the horizontal laser welding head B, and the inclined laser welding head B to start, so that the laser beams emitted by the horizontal laser welding head A and the inclined laser welding head A form a straight weld scar A at the right contact point and the left contact point, respectively. At the same time, the laser beams emitted by the horizontal laser welding head B and the inclined laser welding head B form a straight weld scar B at the left contact point and the right contact point, respectively, thereby achieving the goal of welding the left and right bars of the U-shaped aluminum alloy part to the bar-shaped aluminum alloy part, and finally welding to form a desired aluminum alloy frame;

[0043] S9. Remove the aluminum alloy frame. The specific steps are as follows:

[0044] S91. The worker controls the piston rod of the push cylinder to retract, which drives the push plate to move backward, and the push plate drives the four laser welding heads to reset;

[0045] S92, control the piston rod of the locking cylinder to move rightward, and the piston rod drives the L-shaped locking block to move rightward, and the L-shaped locking block no longer locks the aluminum alloy frame;

[0046] S93. The piston rod of the lifting cylinder is controlled to retract downward, and the piston rod drives the positioning platform to move downward. The positioning platform drives the aluminum alloy frame to move downward synchronously, and then the worker removes the aluminum alloy frame.

[0047] S10: The worker repeats steps S1 to S9 multiple times to continuously weld and form multiple required aluminum alloy frames.

[0048] The present invention has the following advantages: greatly improving the welding quality of the aluminum alloy frame and greatly improving the welding efficiency of the aluminum alloy frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a structural diagram of the aluminum alloy frame;

[0050] Figure 2 for Figure 1 The main view;

[0051] Figure 3 It is a structural schematic diagram of a strip aluminum alloy part;

[0052] Figure 4 for Figure 3 The main view;

[0053] Figure 5 It is a structural diagram of a U-shaped aluminum alloy part;

[0054] Figure 6 for Figure 5 The main view;

[0055] Figure 7 A schematic diagram of a worker positioning a U-shaped aluminum alloy part on the top surface of a strip-shaped aluminum alloy part;

[0056] Figure 8 Schematic diagram for aligning the laser welding head with the left contact point between the left bar and the bar-shaped aluminum alloy part;

[0057] Figure 9 Schematic diagram of a straight weld scar A formed at the left contact point between the left bar and the bar-shaped aluminum alloy part;

[0058] Figure 10 Schematic diagram for aligning the laser welding head to the right contact point between the left bar and the bar-shaped aluminum alloy part;

[0059] Figure 11 Schematic diagram of a straight weld scar A formed at the right contact point between the left bar and the bar-shaped aluminum alloy part;

[0060] Figure 12 Schematic diagram showing a gap formed between the bottom surfaces of the left and right bars and the top surface of the bar-shaped aluminum alloy member;

[0061] Figure 13 It is a structural schematic diagram of the present invention;

[0062] Figure 14 for Figure 13 M-direction schematic diagram;

[0063] Figure 15 for Figure 13 The main cross-sectional diagram of

[0064] Figure 16 It is a structural schematic diagram of the tooling assembly of the present invention;

[0065] Figure 17 for Figure 16 The main cross-sectional diagram of

[0066] Figure 18 It is a schematic diagram of the structure of the polishing component;

[0067] Figure 19 for Figure 18 The main cross-sectional diagram of

[0068] Figure 20 It is a structural diagram of the welding assembly;

[0069] Figure 21 for Figure 20 The main view;

[0070] Figure 22 Schematic diagram for positioning of strip aluminum alloy parts;

[0071] Figure 23 Schematic diagram for positioning U-shaped aluminum alloy parts;

[0072] Figure 24 A schematic diagram of a U-shaped aluminum alloy part being fixed between a stop block and an L-shaped locking block;

[0073] Figure 25 is a schematic diagram showing the top surface of a strip-shaped aluminum alloy part in contact with the abrasive belt of a lower belt grinder;

[0074] Figure 26 Schematic diagram of a bar-shaped aluminum alloy part and a U-shaped aluminum alloy part rotated 180°;

[0075] Figure 27 It is a schematic diagram of a U-shaped aluminum alloy part in which the left side bar and the right side bar are both facing the bar-shaped aluminum alloy part;

[0076] Figure 28 Schematic diagram showing that the bottom surfaces of the left and right bars are in contact with the top surface of the bar-shaped aluminum alloy member;

[0077] Figure 29 It is a schematic diagram of the downward movement of the aluminum alloy frame;

[0078] In the picture:

[0079] 1-bar-shaped aluminum alloy part, 2-U-shaped aluminum alloy part, 3-left bar, 4-straight weld scar A, 5-right bar, 6-straight weld scar B, 7-laser welding head, 8-gap;

[0080] 9- workbench, 10- grinding assembly, 11- tooling assembly, 12- welding assembly;

[0081] 13-driving motor, 14-feed cylinder, 15-bending part, 16-lifting cylinder, 17-positioning table, 18-positioning slot, 19-servo motor, 20-channel steel, 21-stopper, 22-locking cylinder, 23-L-shaped locking block;

[0082] 24- vertical plate, 25- push cylinder, 26- push plate, 27- horizontal laser welding head A, 28- inclined laser welding head A, 29- horizontal laser welding head B, 30- inclined laser welding head B;

[0083] 31- bracket, 32- upper belt grinder, 33- lower belt grinder, 34- frame, 35- sanding belt, 36- sanding motor. DETAILED DESCRIPTION

[0084] The present invention will be further described below with reference to the accompanying drawings, and the protection scope of the present invention is not limited to the following:

[0085] like Figures 13 to 21 As shown, a welding and forming device for an aluminum alloy frame includes a workbench 9, a bottom surface of which is fixedly provided with a plurality of support frames supported on the ground, a table top of the workbench 9 is provided with a grinding assembly 10 for simultaneously grinding off burrs on a U-shaped aluminum alloy part 2 and a strip-shaped aluminum alloy part 1, a table top of the workbench 9 is provided with a tooling assembly 11 for positioning the strip-shaped aluminum alloy part 1 and for positioning and fixing the U-shaped aluminum alloy part 2, and the tooling assembly 11 is located on the right side of the grinding assembly 10; a welding assembly 12 for simultaneously welding the left side bar 3 and the right side bar 5 of the U-shaped aluminum alloy part 2 to the strip-shaped aluminum alloy part 1 is also provided on the table top of the workbench 9, and the welding assembly 12 is located at the upper right corner of the tooling assembly 11.

[0086] The tooling assembly 11 includes a driving motor 13 fixed on the bottom surface of the workbench 9, a turntable fixed on the output shaft of the driving motor 13, and a feed cylinder 14 fixed on the turntable. The piston rod of the feed cylinder 14 extends to the left, and a bending part 15 is fixed on the extended end. A lifting cylinder 16 is fixed on the bottom surface of the lower support plate of the bending part 15. The piston rod of the lifting cylinder 16 passes through the lower support plate upward, and a positioning platform 17 is fixed on the extended end. A positioning groove 18 is provided on the top surface of the positioning platform 17; the positioning groove 18 of the positioning platform 17 matches the outer contour of the strip-shaped aluminum alloy part 1.

[0087] A servo motor 19 is fixedly provided on the top surface of the support plate on the bending part 15, and the output shaft of the servo motor 19 extends to the left, and a connecting plate is fixedly provided on the extended end, and a channel steel 20 located directly above the positioning platform 17 is fixedly provided on the top surface of the connecting plate, and a stopper 21 is welded inside the channel steel 20, and a locking cylinder 22 is fixedly provided on the bottom surface of the channel steel 20, and the piston rod of the locking cylinder 22 extends to the left, and an L-shaped locking block 23 is fixedly provided on the extended end, and the L-shaped locking block 23 is opposite to the stopper 21 on the left and right; the width of the concave cavity of the channel steel 20 is equal to the width of the U-shaped aluminum alloy part 2.

[0088] The welding assembly 12 includes a vertical plate 24 fixed on the surface of the workbench 9 and a pushing cylinder 25 fixed on the rear end surface of the vertical plate 24. The piston rod of the pushing cylinder 25 passes through the vertical plate 24 forward, and a push plate 26 is fixed on the extended end. A horizontal laser welding head A27 and an inclined laser welding head A28 are fixed on the front end surface of the push plate 26 and at its right end. A horizontal laser welding head B29 and an inclined laser welding head B30 are fixed on the front end surface of the push plate 26 and at its left end. The other ends of the four laser welding heads are respectively connected to a laser welding machine; the horizontal laser welding head A27 and the horizontal laser welding head B29 are symmetrical about the vertical plate 24, and the inclined laser welding head A28 and the inclined laser welding head B30 are symmetrical about the vertical plate 24.

[0089] The grinding assembly 10 includes a bracket 31 fixed on the surface of the workbench 9, an upper belt grinder 32 and a lower belt grinder 33 respectively arranged on the right end surface of the bracket 31, the upper belt grinder 32 is opposite to the channel steel 20 on the left and right, and the lower belt grinder 33 is opposite to the positioning platform 17 on the left and right; the upper belt grinder 32 includes a frame 34 fixed on the right end surface of the bracket 31, an active roller and a driven roller rotatably installed in the frame 34, an abrasive belt 35 is installed between the active roller and the driven roller, and a grinding motor 36 is fixed on the rear end surface of the frame 34, and the output shaft of the grinding motor 36 is connected to the rear end of the active roller.

[0090] The welding forming device also includes a controller, which is electrically connected to the drive motor 13, the servo motor 19, the grinding motor 36, the feed cylinder 14, the lifting cylinder 16 and the locking cylinder 22 via a signal line. Workers can use the controller to control the start or stop of the drive motor 13, the servo motor 19 and the grinding motor 36. At the same time, they can also control the extension or retraction of the piston rods of the feed cylinder 14, the lifting cylinder 16 and the locking cylinder 22, thereby facilitating the worker's operation and having a high degree of automation.

[0091] A welding forming method for an aluminum alloy frame comprises the following steps:

[0092] S1. Positioning of the strip aluminum alloy part 1: The worker takes out a Figure 3~Figure 4 The strip aluminum alloy part 1 shown is embedded in the positioning groove 18 of the positioning platform 17 of the tooling assembly. Since the positioning groove 18 of the positioning platform 17 matches the outer contour of the strip aluminum alloy part 1, the positioning of the strip aluminum alloy part 1 is achieved. Figure 22 As shown, at this time, the top surface of the strip-shaped aluminum alloy part 1 is flush with the lower edge of the sanding belt 35 of the upper sanding belt grinder 32;

[0093] S2. Positioning and fixing of the U-shaped aluminum alloy part 2. The specific steps are as follows:

[0094] S21, the worker takes out a Figure 5~Figure 6 The U-shaped aluminum alloy part 2 shown in the figure is placed with the left side bar 3 and the right side bar 5 facing upwards, and then the U-shaped aluminum alloy part 2 is embedded in the channel steel 20 of the tooling assembly 11. Since the width of the concave cavity of the channel steel 20 is equal to the width of the U-shaped aluminum alloy part 2, the positioning of the U-shaped aluminum alloy part 2 is achieved, as shown in FIG. Figure 23 As shown, at this time, the top surfaces of the left side strip 3 and the right side strip 5 of the U-shaped aluminum alloy part 2 are flush with the lower side strip of the sanding belt 35 of the upper sanding belt grinder 32;

[0095] S22. The worker controls the piston rod of the locking cylinder 22 of the tooling assembly 11 to retract to the right. The piston rod drives the L-shaped locking block 23 to move to the right. The L-shaped locking block 23 moves toward the U-shaped aluminum alloy part 2. When the piston rod of the locking cylinder 22 is fully retracted, the U-shaped aluminum alloy part 2 is fixed between the stopper 21 and the L-shaped locking block 23. Figure 24 As shown;

[0096] S3, grinding off the burrs on the top surface of the strip-shaped aluminum alloy part 1, and grinding off the burrs on the top surfaces of the left strip 3 and the right strip 5 of the U-shaped aluminum alloy part 2. The specific operation steps are as follows:

[0097] S31, controlling the grinding motor 36 of the lower belt grinder 33 and the grinding motor 36 of the upper belt grinder 32 to start, the grinding motor 36 drives the active roller to rotate, and the active roller drives the sanding belt 35 installed between the active roller and the driven roller to rotate;

[0098] S32, the piston rod of the feed cylinder 14 of the control tooling assembly 11 extends to the left, and the piston rod drives the bending member 15 to move to the left. The bending member 15 drives the lifting cylinder 16, the positioning platform 17, the servo motor 19 and the channel steel 20 to move to the left synchronously. The positioning platform 17 drives the strip aluminum alloy part 1 to move toward the lower sideband of the lower belt grinder 33. At the same time, the channel steel 20 drives the U-shaped aluminum alloy part 2 to move toward the lower sideband of the upper belt grinder 32.

[0099] When the piston rod of the feed cylinder 14 is fully extended, the top surface of the strip aluminum alloy part 1 contacts the lower side belt of the sanding belt 35 of the lower sanding belt grinder 33, as shown in FIG. Figure 25 As shown, the lower side belt of the rotating abrasive belt 35 grinds the burrs on the top surface of the strip-shaped aluminum alloy part 1. At the same time, the top surfaces of the left side strip 3 and the right side strip 5 of the U-shaped aluminum alloy part 2 are in contact with the lower side belt of the abrasive belt 35 of the upper abrasive belt grinder 32. The lower side belt of the rotating abrasive belt 35 grinds the burrs on the top surfaces of the left side strip 3 and the right side strip 5 of the U-shaped aluminum alloy part 2. Figure 25 As shown;

[0100] S33. After grinding for 20 to 30 seconds, the grinding motor 36 of the lower belt grinder 33 and the grinding motor 36 of the upper belt grinder 32 are controlled to be turned off, thereby finally grinding away the burrs on the top surface of the strip-shaped aluminum alloy part 1. At the same time, the burrs on the top surfaces of the left strip 3 and the right strip 5 of the U-shaped aluminum alloy part 2 are also ground away.

[0101] S4. After polishing, the piston rod of the feed cylinder 14 is retracted to the right, and the piston rod drives the bending member 15 to move to the right. The bending member 15 drives the strip aluminum alloy part 1 and the U-shaped aluminum alloy part 2 to move to the right synchronously, so that the strip aluminum alloy part 1 and the U-shaped aluminum alloy part 2 are reset;

[0102] Then the driving motor 13 is controlled to start, the driving motor 13 drives the turntable to rotate, the turntable drives the feed cylinder 14 and the bending part 15 to rotate synchronously, the bending part 15 drives the lifting cylinder 16, the positioning table 17, the servo motor 19 and the channel steel 20 to rotate synchronously, and then drives the strip aluminum alloy part 1 and the U-shaped aluminum alloy part 2 to rotate synchronously. When the strip aluminum alloy part 1 and the U-shaped aluminum alloy part 2 rotate 180°, as shown in FIG. Figure 26 As shown, the controller controls the drive motor 13 to be turned off;

[0103] S5, the servo motor 19 of the control tooling assembly 11 is started, the servo motor 19 drives the connecting plate to rotate, the connecting plate drives the channel steel 20 to rotate, and the channel steel 20 drives the U-shaped aluminum alloy part 2 fixed therein to rotate synchronously. When the U-shaped aluminum alloy part 2 rotates 180°, the controller controls the servo motor 19 to turn off. At this time, the left side bar 3 and the right side bar 5 of the U-shaped aluminum alloy part 2 are both facing the strip aluminum alloy part 1, as shown in FIG. Figure 27 As shown;

[0104] S6. The piston rod of the lifting cylinder 16 of the control tooling assembly 11 extends upward, and the piston rod drives the positioning platform 17 to move upward. The positioning platform 17 drives the strip aluminum alloy part 1 to move upward. The strip aluminum alloy part 1 moves toward the left side bar 3 and the right side bar 5 of the U-shaped aluminum alloy part 2. When the piston rod of the lifting cylinder 16 is fully extended, the bottom surfaces of the left side bar 3 and the right side bar 5 are in contact with the top surface of the strip aluminum alloy part 1. Figure 28 As shown, at this time, the strip-shaped aluminum alloy piece 1 and the U-shaped aluminum alloy piece 2 are both at the front side of the welding assembly 12;

[0105] S7. The piston rod of the push cylinder 25 of the control welding assembly 12 extends forward, and the piston rod drives the push plate 26 to move forward. The push plate 26 drives the horizontal laser welding head A27, the inclined laser welding head A28, the horizontal laser welding head B29 and the inclined laser welding head B30 thereon to move forward. After the push plate 26 moves forward for a certain distance, the horizontal laser welding head A27 and the inclined laser welding head A28 are respectively aligned with the right contact point and the left contact point formed between the strip aluminum alloy part 1 and the left strip 3. At the same time, the horizontal laser welding head B29 and the inclined laser welding head B30 are respectively aligned with the left contact point and the right contact point formed between the strip aluminum alloy part 1 and the right strip 5.

[0106] S8, control the laser welding machine connected to the horizontal laser welding head A27, the inclined laser welding head A28, the horizontal laser welding head B29 and the inclined laser welding head B30 to start, the laser beams emitted by the horizontal laser welding head A27 and the inclined laser welding head A28 form a straight weld scar A4 at the right contact point and the left contact point respectively, at the same time, the laser beams emitted by the horizontal laser welding head B29 and the inclined laser welding head B30 form a straight weld scar B6 at the left contact point and the right contact point respectively, thereby realizing the welding of the left side bar 3 and the right side bar 5 of the U-shaped aluminum alloy part 2 to the bar-shaped aluminum alloy part 1, and finally welding to form a required aluminum alloy frame. The structure of the welded aluminum alloy frame is as shown. Figure 1~Figure 2 As shown;

[0107] Among them, in step S3, the burrs on the top surface of the strip aluminum alloy part 1 are pre-grinded away through the linkage cooperation of the tooling assembly 11, the upper belt grinder 32 and the lower belt grinder 33. At the same time, the burrs on the top surfaces of the left side bar 3 and the right side bar 5 of the U-shaped aluminum alloy part 2 are ground away. Therefore, in step S6, when the bottom surfaces of the left side bar 3 and the right side bar 5 of the U-shaped aluminum alloy part 2 are in contact with the top surface of the strip aluminum alloy part 1, no gap will be generated due to the presence of burrs, thereby increasing the contact surface between the linear weld scar A4 formed by subsequent welding and the left side bar 3 and the strip aluminum alloy part 1. At the same time, the contact surface between the linear weld scar B6 formed by subsequent welding and the right side bar 5 and the strip aluminum alloy part 1 is increased. Due to the significant increase in contact area, the U-shaped aluminum alloy part 2 can be firmly welded to the strip aluminum alloy part 1. Therefore, compared with the welding forming device, Figures 7 to 11 The welding method shown greatly improves the welding quality of the aluminum alloy frame.

[0108] S9. Remove the aluminum alloy frame. The specific steps are as follows:

[0109] S91. The worker controls the piston rod of the push cylinder 25 to retract backward, which drives the push plate 26 to move backward. The push plate 26 drives the four laser welding heads to reset.

[0110] S92, control the piston rod of the locking cylinder 22 to move rightward, and the piston rod drives the L-shaped locking block 23 to move rightward, so that the L-shaped locking block 23 no longer locks the aluminum alloy frame;

[0111] S93, control the piston rod of the lifting cylinder 16 to retract downward, the piston rod drives the positioning platform 17 to move downward, the positioning platform 17 drives the aluminum alloy frame to move downward synchronously, and then the worker removes the aluminum alloy frame in the direction of removal. Figure 29 As indicated by the arrow;

[0112] S10: The worker repeats steps S1 to S9 multiple times to continuously weld and form multiple required aluminum alloy frames.

[0113] Among them, it can be seen from steps S7~S8 that the worker only needs to control the piston rod of the push cylinder 25 of the welding assembly 12 to extend forward, and then the left side bar 3 of the U-shaped aluminum alloy part 2 can be welded to the bar aluminum alloy part 1 through the horizontal laser welding head A27 and the inclined laser welding head A28. At the same time, the right side bar 5 of the U-shaped aluminum alloy part 2 can be welded to the bar aluminum alloy part 1 through the horizontal laser welding head B29 and the inclined laser welding head B30. Compared with the process in the workshop, Figures 7 to 11The welding method shown does not require four steps to weld the U-shaped aluminum alloy part 2 to the strip aluminum alloy part 1, thereby greatly shortening the welding time of the U-shaped aluminum alloy part 2 and the strip aluminum alloy part 1, and then realizing the welding and forming of an aluminum alloy frame in a short time, thereby greatly improving the welding efficiency of the aluminum alloy frame.

Claims

1. A welding and forming device for an aluminum alloy frame, characterized in that: It comprises a workbench (9), a grinding assembly (10) for simultaneously grinding off burrs on the U-shaped aluminum alloy part (2) and the strip-shaped aluminum alloy part (1) is provided on the workbench (9), a tool assembly (11) for positioning the strip-shaped aluminum alloy part (1) and for positioning and fixing the U-shaped aluminum alloy part (2) is provided on the workbench (9), and the tool assembly (11) is located on the right side of the grinding assembly (10); a welding assembly (12) for simultaneously welding the left side bar (3) and the right side bar (5) of the U-shaped aluminum alloy part (2) to the strip-shaped aluminum alloy part (1) is also provided on the workbench (9), and the welding assembly (12) is located at the upper right corner of the tool assembly (11); The tooling assembly (11) includes a driving motor (13) fixed on the bottom surface of the workbench (9), a turntable fixed on the output shaft of the driving motor (13), and a feed cylinder (14) fixed on the turntable, wherein the piston rod of the feed cylinder (14) extends to the left, and a bending piece (15) is fixed on the extended end, a lifting cylinder (16) is fixed on the bottom surface of the lower support plate of the bending piece (15), the piston rod of the lifting cylinder (16) passes through the lower support plate upward, and a positioning platform (17) is fixed on the extended end, and a positioning groove (18) is provided on the top surface of the positioning platform (17); A servo motor (19) is fixedly provided on the top surface of the upper support plate of the bending member (15), the output shaft of the servo motor (19) extends to the left, and a connecting plate is fixedly provided on the extended end, a channel steel (20) located directly above the positioning platform (17) is fixedly provided on the top surface of the connecting plate, a stopper (21) is welded inside the channel steel (20), a locking cylinder (22) is fixedly provided on the bottom surface of the channel steel (20), a piston rod of the locking cylinder (22) extends to the left, and an L-shaped locking block (23) is fixedly provided on the extended end, and the L-shaped locking block (23) is opposite to the stopper (21) on the left and right; The welding assembly (12) includes a vertical plate (24) fixed on the table surface of the workbench (9), and a push cylinder (25) fixed on the rear end surface of the vertical plate (24). The piston rod of the push cylinder (25) passes through the vertical plate (24) forward, and a push plate (26) is fixed on the extended end. A horizontal laser welding head A (27) and an inclined laser welding head A (28) are fixed on the front end surface of the push plate (26) and located at the right end thereof. A horizontal laser welding head B (29) and an inclined laser welding head B (30) are fixed on the front end surface of the push plate (26) and located at the left end thereof. The other ends of the four laser welding heads are respectively connected to a laser welding machine. The horizontal laser welding head A (27) and the horizontal laser welding head B (29) are symmetrical about the vertical plate (24), and the inclined laser welding head A (28) and the inclined laser welding head B (30) are symmetrical about the vertical plate (24).

2. The welding and forming device for an aluminum alloy frame according to claim 1, characterized in that: A plurality of support frames supported on the ground are fixedly provided on the bottom surface of the workbench (9).

3. The welding and forming device for an aluminum alloy frame according to claim 2, characterized in that: The positioning groove (18) of the positioning platform (17) matches the outer contour of the strip-shaped aluminum alloy part (1), and the width of the concave cavity of the channel steel (20) is equal to the width of the U-shaped aluminum alloy part (2).

4. The welding and forming device for an aluminum alloy frame according to claim 3, characterized in that: The grinding assembly (10) includes a bracket (31) fixed on the table of the workbench (9), an upper sanding belt grinder (32) and a lower sanding belt grinder (33) respectively arranged on the right end surface of the bracket (31), the upper sanding belt grinder (32) is opposite to the channel steel (20) on the left and right, and the lower sanding belt grinder (33) is opposite to the positioning table (17) on the left and right; The upper belt sander (32) comprises a frame (34) fixedly mounted on the right end face of the bracket (31), an active roller and a driven roller rotatably mounted in the frame (34), an abrasive belt (35) being mounted between the active roller and the driven roller, and a grinding motor (36) being fixedly mounted on the rear end face of the frame (34), the output shaft of the grinding motor (36) being connected to the rear end of the active roller.

5. The welding and forming device for an aluminum alloy frame according to claim 4, characterized in that: The welding forming device further comprises a controller, which is electrically connected to the driving motor (13), the servo motor (19), the grinding motor (36), the feeding cylinder (14), the lifting cylinder (16) and the locking cylinder (22) via signal lines.

6. A method for welding and forming an aluminum alloy frame, using the device for welding and forming an aluminum alloy frame according to claim 5, characterized in that: It includes the following steps: S1. Positioning of the strip aluminum alloy part (1): A worker takes out a strip aluminum alloy part (1) and inserts it into the positioning groove (18) of the positioning table (17) of the tooling assembly. Since the positioning groove (18) of the positioning table (17) matches the outer contour of the strip aluminum alloy part (1), the positioning of the strip aluminum alloy part (1) is achieved. At this time, the top surface of the strip aluminum alloy part (1) is flush with the lower edge of the sanding belt (35) of the upper sanding belt grinder (32); S2. Positioning and fixing of the U-shaped aluminum alloy part (2). The specific steps are as follows: S21. The worker takes out a U-shaped aluminum alloy part (2), places the left side strip (3) and the right side strip (5) of the U-shaped aluminum alloy part (2) upward, and then embeds the U-shaped aluminum alloy part (2) into the channel steel (20) of the tooling assembly (11). Since the width of the concave cavity of the channel steel (20) is equal to the width of the U-shaped aluminum alloy part (2), the positioning of the U-shaped aluminum alloy part (2) is achieved. At this time, the top surfaces of the left side strip (3) and the right side strip (5) of the U-shaped aluminum alloy part (2) are flush with the lower edge strip of the sanding belt (35) of the upper sanding belt grinder (32); S22. The worker controls the piston rod of the locking cylinder (22) of the tooling assembly (11) to retract to the right, and the piston rod drives the L-shaped locking block (23) to move to the right. The L-shaped locking block (23) moves toward the U-shaped aluminum alloy part (2). When the piston rod of the locking cylinder (22) is fully retracted, the U-shaped aluminum alloy part (2) is fixed between the stopper (21) and the L-shaped locking block (23); S3, grinding off the burrs on the top surface of the strip-shaped aluminum alloy part (1), and grinding off the burrs on the top surfaces of the left strip (3) and the right strip (5) of the U-shaped aluminum alloy part (2), the specific operation steps are as follows: S31, controlling the grinding motor (36) of the lower sanding belt grinder (33) and the grinding motor (36) of the upper sanding belt grinder (32) to start, the grinding motor (36) drives the active roller to rotate, and the active roller drives the sanding belt (35) installed between the active roller and the driven roller to rotate; S32, the piston rod of the feed cylinder (14) of the control tooling assembly (11) extends to the left, the piston rod drives the bending member (15) to move to the left, the bending member (15) drives the lifting cylinder (16), the positioning table (17), the servo motor (19) and the channel steel (20) to move to the left synchronously, the positioning table (17) drives the strip aluminum alloy member (1) to move toward the lower side belt of the lower belt grinder (33), and at the same time, the channel steel (20) drives the U-shaped aluminum alloy member (2) to move toward the lower side belt of the upper belt grinder (32); When the piston rod of the feed cylinder (14) is fully extended, the top surface of the strip aluminum alloy part (1) contacts the lower side belt of the sanding belt (35) of the lower sanding belt grinder (33), and the lower side belt of the sanding belt (35) in a rotating state grinds the burrs on the top surface of the strip aluminum alloy part (1). At the same time, the top surfaces of the left side strip (3) and the right side strip (5) of the U-shaped aluminum alloy part (2) both contact the lower side belt of the sanding belt (35) of the upper sanding belt grinder (32), and the lower side belt of the sanding belt (35) in a rotating state grinds the burrs on the top surfaces of the left side strip (3) and the right side strip (5) of the U-shaped aluminum alloy part (2); S33, after grinding for 20 to 30 seconds, controlling the grinding motor (36) of the lower belt grinder (33) and the grinding motor (36) of the upper belt grinder (32) to be turned off, thereby finally grinding away the burrs on the top surface of the strip-shaped aluminum alloy part (1), and at the same time, grinding away the burrs on the top surfaces of the left strip (3) and the right strip (5) of the U-shaped aluminum alloy part (2); S4. After polishing, the piston rod of the feed cylinder (14) is retracted to the right, and the piston rod drives the bending member (15) to move to the right. The bending member (15) drives the strip aluminum alloy member (1) and the U-shaped aluminum alloy member (2) to move to the right synchronously, so that the strip aluminum alloy member (1) and the U-shaped aluminum alloy member (2) are reset; Then, the driving motor (13) is controlled to start, the driving motor (13) drives the turntable to rotate, the turntable drives the feed cylinder (14) and the bending member (15) to rotate synchronously, the bending member (15) drives the lifting cylinder (16), the positioning platform (17), the servo motor (19) and the channel steel (20) to rotate synchronously, and then drives the strip aluminum alloy member (1) and the U-shaped aluminum alloy member (2) to rotate synchronously. After the strip aluminum alloy member (1) and the U-shaped aluminum alloy member (2) rotate 180 degrees, the controller controls the driving motor (13) to turn off; S5, the servo motor (19) of the control tooling assembly (11) is started, the servo motor (19) drives the connecting plate to rotate, the connecting plate drives the channel steel (20) to rotate, and the channel steel (20) drives the U-shaped aluminum alloy part (2) fixed therein to rotate synchronously. When the U-shaped aluminum alloy part (2) rotates 180 degrees, the controller controls the servo motor (19) to turn off. At this time, the left side bar (3) and the right side bar (5) of the U-shaped aluminum alloy part (2) are both facing the strip aluminum alloy part (1); S6. The piston rod of the lifting cylinder (16) of the control tooling assembly (11) extends upward, and the piston rod drives the positioning platform (17) to move upward. The positioning platform (17) drives the strip aluminum alloy part (1) to move upward. The strip aluminum alloy part (1) moves toward the left side bar (3) and the right side bar (5) of the U-shaped aluminum alloy part (2). When the piston rod of the lifting cylinder (16) is fully extended, the bottom surfaces of the left side bar (3) and the right side bar (5) are in contact with the top surface of the strip aluminum alloy part (1). At this time, the strip aluminum alloy part (1) and the U-shaped aluminum alloy part (2) are both on the front side of the welding assembly (12); S7, the piston rod of the push cylinder (25) of the control welding assembly (12) extends forward, the piston rod drives the push plate (26) to move forward, and the push plate (26) drives the horizontal laser welding head A (27), the tilted laser welding head A (28), the horizontal laser welding head B (29) and the tilted laser welding head B (30) thereon to move forward. After the push plate (26) moves forward for a certain distance, the horizontal laser welding head A (27) and the tilted laser welding head A (28) are respectively aligned with the right contact point and the left contact point formed between the strip aluminum alloy part (1) and the left side bar (3). At the same time, the horizontal laser welding head B (29) and the tilted laser welding head B (30) are respectively aligned with the left contact point and the right contact point formed between the strip aluminum alloy part (1) and the right side bar (5); S8, controlling the laser welding machine connected to the horizontal laser welding head A (27), the tilted laser welding head A (28), the horizontal laser welding head B (29) and the tilted laser welding head B (30) to start, the laser beams emitted by the horizontal laser welding head A (27) and the tilted laser welding head A (28) respectively form a straight weld scar A (4) at the right contact point and the left contact point, and at the same time, the laser beams emitted by the horizontal laser welding head B (29) and the tilted laser welding head B (30) respectively form a straight weld scar B (6) at the left contact point and the right contact point, thereby achieving the goal of welding the left side bar (3) and the right side bar (5) of the U-shaped aluminum alloy part (2) to the bar-shaped aluminum alloy part (1), and finally welding and forming a desired aluminum alloy frame; S9. Remove the aluminum alloy frame. The specific steps are as follows: S91, the worker controls the piston rod of the push cylinder (25) to retract backward, and the piston rod drives the push plate (26) to move backward, and the push plate (26) drives the four laser welding heads to reset; S92, the piston rod of the locking cylinder (22) is controlled to move rightward, and the piston rod drives the L-shaped locking block (23) to move rightward, and the L-shaped locking block (23) no longer locks the aluminum alloy frame; S93, the piston rod of the lifting cylinder (16) is controlled to retract downward, and the piston rod drives the positioning platform (17) to move downward, and the positioning platform (17) drives the aluminum alloy frame to move downward synchronously, and then the worker removes the aluminum alloy frame; S10: The worker repeats steps S1 to S9 multiple times to continuously weld and form multiple required aluminum alloy frames.

Images