Double-sided friction stir welding panel assembly equipment and panel assembly method

Abstract

The present invention relates to the technical field related to friction welding, and specifically to a double-sided stir friction welding panel assembly device and a panel assembly method, including limiting wheels, which are respectively provided with a plurality of them on both sides of a frame structure, and the plurality of limiting wheels are equidistantly distributed along the length direction of the frame structure, and are used for clamping and limiting the plates to be welded, and the plurality of limiting wheels are respectively connected to a group of sliding guide mechanisms arranged on an upper cross beam, and the sliding guide mechanisms cooperate with a transverse movement mechanism arranged on a lower lower pillow; during welding, the plurality of limiting wheels can move with the welding head in turn, and in the process of movement of each limiting wheel, it can keep flush with the welding point at this time in the width direction of the frame structure, and at this time, the forces of the two limiting wheels on the two plates are concentrated at the contact point between the welding head and the weld. Therefore, compared with the conventional panel assembly fastening method, the present application can automatically change the fastening state of the plate with the movement of the welding head, effectively improving the uniformity of the weld and the welding effect.

Description

Technical Field

[0001] The invention relates to the technical field related to friction welding, and in particular to a double-sided friction stir welding panel assembly device and a panel assembly method. Background Art

[0002] Double-sided friction stir welding is an advanced solid phase welding technology, which is widely used in the connection of aluminum alloy, magnesium alloy, steel and other materials. During double-sided friction welding, the two plates need to fit closely to ensure the welding quality and avoid welding defects. Close fit not only helps to improve the mechanical properties of the joint, but also reduces the instability and potential defects during the welding process.

[0003] In specific implementation, corresponding clamps are usually used to apply lateral pressure to the plates to ensure that the plates are tightly fitted to meet the panelization requirements of the welding process. The conventional panelization method is usually to set a clamp with a length equivalent to the length of the plate on the side of the plate, and the hydraulic device applies pressure to the plate through the clamp. However, due to the limited number of hydraulic devices and the certain length of the clamp and the plate, there is a difference in the actual pressure applied to the plate at different positions on the clamp, so the weld is not uniform, resulting in poor welding effect. In theory, increasing the density of hydraulic devices can avoid this problem, but the increase in hydraulic devices also means increased production costs. At the same time, multiple installation points for connecting the hydraulic devices need to be set on the clamp. In this way, in order to ensure the normal layout of the hydraulic device, a certain space generally needs to be reserved between adjacent installation points, so there is also a problem of uneven pressure distribution. Summary of the invention

[0004] The purpose of the present invention is to provide a double-sided friction stir welding panel assembly device and a panel assembly method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A double-sided friction stir welding panel assembly device comprises four legs arranged opposite to each other, two upper beams and a lower beam respectively fixed on two legs on the same side and distributed up and down, and a fastening beam connecting the two upper beams to form a frame structure;

[0007] Among them, an upper slide ram and a lower slide ram are movably provided on the frame structure, and an upper head and a lower head are respectively provided on the upper slide ram and the lower slide ram, and the upper slide ram and the lower slide ram can respectively drive the upper head and the lower head to move along the length direction of the frame structure, so as to perform double-sided welding on the plate;

[0008] The double-sided friction stir welding panel assembly equipment also includes:

[0009] A plurality of limiting wheels are respectively provided on both sides of the frame structure, and the plurality of limiting wheels are equidistantly distributed along the length direction of the frame structure, and are used for clamping and limiting the plate to be welded. Each of the plurality of limiting wheels is connected to a group of sliding guide mechanisms provided on the upper crossbeam, and the sliding guide mechanisms cooperate with the transverse movement mechanisms provided on the lower lower bolster;

[0010] During the welding process, the transverse movement mechanism can cooperate with multiple groups of the sliding guide mechanisms in sequence, causing the multiple limiting wheels to move in sequence along the length direction of the frame structure. The central axes of the limiting wheels and the welding heads are parallel. When the limiting wheels move, the surface formed by the central axes of the limiting wheels and the welding heads is perpendicular to the length direction of the frame structure.

[0011] As a further solution of the present invention: a second guide rail is fixedly provided on the side of the frame structure, the sliding guide mechanism includes a slider slidably engaged in the second guide rail and an assembly plate fixedly connected to the slider, the limiting wheel is movably arranged on the assembly plate, and a tension spring is also provided between the assembly plate and the upper beam.

[0012] As a further solution of the present invention: a hydraulic cylinder is installed on the assembly plate, a mounting block is fixed to the movable end of the hydraulic cylinder, the limiting wheel is rotatably installed in the mounting block, and the hydraulic cylinder is used to drive the limiting wheel to move toward the plate to be welded;

[0013] Wherein, a second boss is fixedly provided on the assembly plate, one end of the tension spring is connected to the second boss, and the other end is connected to the first boss fixedly provided on the upper cross beam.

[0014] As a further solution of the present invention: the transverse movement mechanism includes a follower arm fixedly connected to the lower sliding pillow and a locking rod movably provided on the follower arm, the locking rod is connected to the ejection assembly installed on the follower arm, and the locking rod can move in a vertical direction on the follower arm and cooperate with a locking structure provided on the assembly plate.

[0015] As a further solution of the present invention: the locking structure includes a locking block fixed on the assembly plate, and the locking block is provided with a locking groove adapted to the locking rod, and the locking groove is arranged in a "U" shape.

[0016] As a further solution of the present invention: the ejection assembly includes a column fixed to the side of the follower arm through a protruding block and a cylindrical spring sleeved on the outer periphery of the column, the follower arm is also slidably provided on a sleeve plate, the column passes through a lug fixed on the sleeve plate and is slidably connected to the lug, the two ends of the cylindrical spring are respectively connected to the protruding block and the lug, the locking rod is fixed to the lug, and a lug is also fixed on the side of the sleeve plate away from the lug, and the lug is connected to a limited position guide structure.

[0017] As a further solution of the present invention: the position limiting guide structure comprises a rectangular plate fixedly connected to the two legs, the rectangular plate is provided with a slot body adapted to the convex column, the convex column extends into the slot body and is slidably connected to the rectangular plate;

[0018] The trough body includes a plurality of connected behavior control troughs and a return vertical trough and an inclined trough respectively connecting the head and tail ends of the behavior control troughs; a return horizontal trough is connected between the return vertical trough and the inclined trough; and a delay groove is also connected at the connection between the return horizontal trough and the inclined trough.

[0019] As a further solution of the present invention: a follower is further hinged on the rectangular plate, a rotating shaft of the follower is connected with a torsion spring, and the follower is located at the connection between the inclined groove, the return transverse groove and the retardation groove;

[0020] The behavior control groove comprises a connected straight section, an inclined section and a vertical section, and the length of the inclined groove is greater than the length of the inclined section.

[0021] A double-sided friction stir welding panel assembly method, using the panel assembly device, comprises the following steps:

[0022] Step 1: Place two plates to be welded in the frame structure;

[0023] Step 2: Multiple limiting wheels on both sides of the frame structure apply pressure to the sides of the plates to keep the two plates in a butt-jointed state;

[0024] Step 3, welding begins, the traverse mechanism cooperates with multiple sets of sliding guide mechanisms in sequence, causing multiple limiting wheels to roll in the length direction of the plate in sequence, and in the width direction of the plate, the limiting wheels are flush with the welding head;

[0025] Step 4: After welding is completed, the upper ram and the lower ram are reset, the limit wheel releases the pressure on the plate, and the welded plate is removed.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present application provides a plurality of equally spaced limiting wheels on both sides of the frame structure, and uses the hydraulic cylinder to provide pressure to ensure that the two plates to be welded are in a stable abutment state;

[0028] During the welding process, multiple limiting wheels can move with the welding head in sequence, and during the movement of each limiting wheel, in the width direction of the frame structure, it can be kept flush with the welding point at this time. At this time, the forces of the two limiting wheels on the two plates are concentrated at the contact point between the welding head and the weld. Therefore, compared with the conventional panel fastening method, the fastening state of the plate in this application can automatically change with the movement of the welding head, which effectively improves the uniformity of the weld and the welding effect;

[0029] In addition, whenever the limiting wheel stops rolling, it can automatically reset under the action of the tension spring, so that in general, the positions of multiple limiting wheels on the side of the plate do not fluctuate significantly, ensuring the stability of the plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The present invention is a structural schematic diagram of an embodiment of a double-sided friction stir welding panel assembly equipment.

[0031] Figure 2 This is a schematic structural diagram of another angle of an embodiment of a double-sided friction stir welding panel assembly equipment.

[0032] Figure 3 This is a structural schematic diagram of a double-sided friction stir welding panel assembly device from another angle.

[0033] Figure 4 for Figure 3 A magnified view of the structure at center.

[0034] Figure 5 A side view of an embodiment of a double-sided friction stir welding panel assembly device.

[0035] Figure 6 This is a structural schematic diagram of the frame structure in one embodiment of a double-sided friction stir welding panel assembly equipment.

[0036] Figure 7 This is a structural schematic diagram of another angle of the frame structure in one embodiment of a double-sided friction stir welding panel assembly equipment.

[0037] Figure 8 for Figure 6 A magnified view of the structure at point B.

[0038] Fig. 9 This is a schematic diagram of the distribution of the leading pressure wheel and the leveling pressure wheel in one embodiment of a double-sided friction stir welding panel assembly equipment.

[0039] Fig.10This is a structural explosion diagram of the transverse movement mechanism in one embodiment of a double-sided friction stir welding panel assembly device.

[0040] Fig.11 A side view of another embodiment of a double-sided friction stir welding panel assembly apparatus.

[0041] In the figure: 1, upper beam; 101, first boss; 2, lower beam; 3, outrigger; 301-movable outrigger; 4, fastening beam; 5, first guide rail; 6, upper ram; 7, lower ram; 8, follower arm; 801-extending guide rod; 9, upper head; 10, lower head; 11, front guide roller; 12, leveling roller; 13, second guide rail; 14, slider; 15, assembly plate; 1501, second boss; 16, locking block; 1601, locking groove; 17, hydraulic cylinder; 1701 , mounting block; 18, limiting wheel; 19, tension spring; 20, cylindrical spring; 21, protruding block; 22, column; 23, sleeve plate; 24, lug; 25, boss; 26, locking rod; 27, rectangular plate; 2701, straight section; 2702, inclined section; 2703, vertical section; 2704, folding horizontal groove; 2705, folding vertical groove; 2706, inclined groove; 2707, lag groove; 28, follower; 29, pad; 30, telescopic drive member; 31-guide rod. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only embodiment.

[0044] See also Figure 1-Figure 10 In an embodiment of the present invention, a double-sided friction stir welding panel assembly device includes four legs 3 arranged opposite to each other, two upper beams 1 and a lower beam 2 respectively fixed on two legs 3 located on the same side and distributed up and down, and a fastening beam 4 connecting the two upper beams 1 to form a frame structure;

[0045] Among them, an upper sliding ram 6 and a lower sliding ram 7 are movably provided on the frame structure, and an upper head 9 and a lower head 10 are respectively provided on the upper sliding ram 6 and the lower sliding ram 7. The upper sliding ram 6 and the lower sliding ram 7 can respectively drive the upper head 9 and the lower head 10 to move along the length direction of the frame structure to perform double-sided welding on the plate.

[0046] It should be supplemented that two pads 29 are fixed in the frame structure (respectively fixed on the two legs 3 located on the same side), and a gap is reserved between the two pads 29. The pads 29 are used to support the plates to be welded. In specific implementation, the two plates to be welded are transferred from one side of the frame structure along the length direction of the frame structure to the two pads 29. Then, the plurality of limiting wheels 18 apply pressure to the side of the plates along the width direction of the plates, so that the two plates to be welded are closely butted, and the welding head is aligned with the gap reserved between the two pads 29.

[0047] Of course, both the upper slide 6 and the lower slide 7 are provided with a hydraulic drive device, and the hydraulic drive device is used to drive the welding head to approach the weld so as to achieve a specific pressing amount. In addition, the upper slide 6 is also equipped with a corresponding drive motor to drive the welding head to rotate. Of course, in the specific implementation process, the above-mentioned hydraulic drive device can also adopt servo drive, which can be selected according to actual needs, and this embodiment does not make specific limitations on this.

[0048] It should be added that the upper ram 6 and the lower ram 7 are both provided with a leading pressure wheel 11 and a leveling pressure wheel 12. The difference is that the number of the leveling pressure wheels 12 on the upper ram 6 is two, and the number of the leveling pressure wheels 12 on the lower ram 7 is one. The three leveling pressure wheels 12 follow the layout of two on top and one on bottom, and this specific layout is used to apply reasonable pressure to the upper and lower welds of the plate.

[0049] The mobile drive of the above-mentioned pressing wheel has a variety of optional implementation forms, including pneumatic, hydraulic or motor control. The appropriate driving mode can be flexibly selected according to different requirements such as actual production scenarios, cost, accuracy, etc. to ensure the normal operation of the pressing wheel;

[0050] With the pressure exerted by the above-mentioned pressure wheel layout, the residual stress after welding can be effectively released, and the stress can be re-distributed reasonably, improving the adverse conditions that may occur in the plate due to stress problems after welding and improving the overall quality. While releasing stress, this technology can rely on the action of the three pressure wheels on the plate to achieve high-precision surface leveling function, ensuring that the surface flatness of the plate reaches a high standard and meets the production requirements of high-quality metal products.

[0051] The double-sided friction stir welding assembly equipment also includes a limiting wheel 18, a sliding guide mechanism and a transverse movement mechanism. The limiting wheels 18 are respectively provided on both sides of the frame structure, and the plurality of limiting wheels 18 are equidistantly distributed along the length direction of the frame structure, and are used to clamp and limit the plate to be welded. The plurality of limiting wheels 18 are each connected to a group of the sliding guide mechanisms provided on the upper crossbeam 1, and the sliding guide mechanisms cooperate with the transverse movement mechanism provided on the lower lower bolster 7;

[0052] During the welding process, the transverse movement mechanism can cooperate with multiple groups of the sliding guide mechanisms in sequence, causing the multiple limiting wheels 18 to move in sequence along the length direction of the frame structure. The limiting wheels 18 are parallel to the central axes of the welding heads. When the limiting wheels 18 move, the surface formed by the central axes of the limiting wheels 18 and the welding heads is perpendicular to the length direction of the frame structure.

[0053] Furthermore, four first guide rails 5 arranged opposite to each other are fixedly provided in the frame structure, the upper slide 6 is slidably engaged between the two first guide rails 5 located at the top, and the lower slide 7 is slidably engaged between the two first guide rails 5 located at the bottom. When double-sided welding is performed, the upper slide 6 and the lower slide 7 need to slide synchronously along the first guide rails 5. In this regard, a corresponding driving mechanism is also provided on the frame structure. For the selection of the driving mechanism, a threaded rod driving method or a gear rack transmission method can be adopted. The specific selection can be made according to actual needs. In this embodiment, the threaded rod driving method is preferably adopted. The threaded rod driving method has the characteristics of high precision and stability, and can effectively ensure the welding effect. This application will not go into details.

[0054] Before welding begins, the plurality of limiting wheels 18 are equidistantly distributed along the length direction of the plate to be welded, so that the plate can be effectively fixed to ensure the stability of the butt joint of the two plates to be welded. After welding begins, the lateral movement mechanism cooperates with the sliding guide mechanism to enable the first limiting wheel 18 to maintain a corresponding positional relationship with the welding head (that is, the surface formed by the central axis of the limiting wheel 18 and the welding head is perpendicular to the length direction of the frame structure) and move synchronously with the welding head, that is, there is a limiting wheel 18 on both sides of the welding head, and the two limiting wheels 18 are for the two limiting wheels 18. The force of the plate is concentrated at the contact point between the welding head and the weld. After the welding head moves to the next limiting wheel 18 and establishes the above-mentioned position relationship with the wheel, the limiting wheel 18 will move synchronously with the welding head, and the previous limiting wheel 18 will be reset, and so on. During the entire welding process, each of the limiting wheels 18 can maintain the above-mentioned position relationship with the welding head in turn and move synchronously with the welding head. Compared with the conventional panel fastening method, the fastening state of the plate in this application can automatically change with the movement of the welding head, which effectively improves the uniformity of the weld and the welding effect.

[0055] Please refer again Figure 4 A second guide rail 13 is fixedly provided on the side of the frame structure, and the sliding guide mechanism includes a slider 14 slidably engaged in the second guide rail 13 and an assembly plate 15 fixedly connected to the slider 14. The limiting wheel 18 is movably provided on the assembly plate 15, and a tension spring 19 is also provided between the assembly plate 15 and the upper beam 1.

[0056] Please refer again Fig.10 A hydraulic cylinder 17 is installed on the assembly plate 15, and a mounting block 1701 is fixed to the movable end of the hydraulic cylinder 17. The limiting wheel 18 is rotatably installed in the mounting block 1701, and the hydraulic cylinder 17 is used to drive the limiting wheel 18 to move toward the plate to be welded. A second boss 1501 is also fixed on the assembly plate 15, and one end of the tension spring 19 is connected to the second boss 1501, and the other end is connected to the first boss 101 fixed on the upper beam 1.

[0057] It should be noted that the transverse movement mechanism can drive the limiting wheel 18 to move through the assembly plate 15, and accordingly, the tension spring 19 is stretched. After the movable limiting wheel 18 (hereinafter referred to as the No. 1 wheel for clarity) contacts the next limiting wheel 18 (hereinafter referred to as the No. 2 wheel), the transverse movement mechanism is separated from the assembly plate 15 connected to the No. 1 wheel. Then, the tension spring 19 rebounds, and the No. 1 wheel is reset. When the tension spring 19 starts to rebound, the welding head moves to a position flush with the No. 2 wheel in the width direction of the frame structure (the distance moved by the welding head in this process is The sum of the radii of the No. 2 wheel, that is, the diameter of the limiting wheel 18), the transverse movement mechanism will drive the No. 2 wheel to roll along the length direction of the plate. Therefore, the present application arranges multiple limiting wheels 18 at equal intervals and uses the hydraulic cylinder 17 to provide pressure to ensure that the two plates to be welded are in a stable abutment state. During the welding process, the multiple limiting wheels 18 can move with the welding head in sequence, and during the movement, they are flush with the welding point in the width direction of the frame structure. The forces of the two limiting wheels 18 on the two plates are concentrated at the contact point between the welding head and the weld, thereby effectively improving the uniformity of the weld and the welding effect.

[0058] Please refer again Fig.10The transverse movement mechanism includes a follower arm 8 fixedly connected to the lower bolster 7 and a locking rod 26 movably arranged on the follower arm 8. The locking rod 26 is connected to the ejection assembly installed on the follower arm 8, and the locking rod 26 can move in a vertical direction on the follower arm 8 and cooperate with a locking structure arranged on the assembly plate 15. The locking structure includes a locking block 16 fixed to the assembly plate 15, and a locking groove 1601 adapted to the locking rod 26 is provided on the locking block 16, and the locking groove 1601 is arranged in a "U" shape.

[0059] Attach Figure 1 For example, at this time, the upper head 9 and the lower head 10 are located at the welding starting point, and the locking rod 26 is inserted into the locking groove 1601 corresponding to the first limiting wheel 18. In the width direction of the frame structure, the first limiting wheel 18 is flush with the welding point. After the welding starts, the follower arm 8 moves with the lower sliding pillow 7, and the locking rod 26 can drive the assembly plate 15 to move together through the locking block 16. The first limiting wheel 18 rolls along the side of the plate, so that the pressure applied to the plate by the hydraulic cylinder 17 through the limiting wheel 18 is gathered at the welding point, thereby improving the uniformity of the weld and the welding effect.

[0060] The ejection assembly includes a column 22 fixed to the side of the follower arm 8 through a protruding block 21 and a cylindrical spring 20 sleeved on the outer periphery of the column 22. The follower arm 8 is also slidably provided with a sleeve plate 23. The column 22 passes through a lug 24 fixed on the sleeve plate 23 and is slidably connected to the lug 24. The two ends of the cylindrical spring 20 are respectively connected to the protruding block 21 and the lug 24. The locking rod 26 is fixed to the lug 24. A lug 25 is also fixedly provided on the side of the sleeve plate 23 away from the lug 24. The lug 25 is connected to a limited position guide structure.

[0061] Please refer again Figure 6 and Figure 8The limiting guide structure includes a rectangular plate 27 fixedly connecting the two legs 3, and a groove body adapted to the boss 25 is provided on the rectangular plate 27, and the boss 25 extends into the groove body and is slidably connected to the rectangular plate 27; the groove body includes a plurality of connected behavior control grooves and a return vertical groove 2705 and an inclined groove 2706 respectively connected to the head and tail ends of the behavior control grooves, a return horizontal groove 2704 is connected between the return vertical groove 2705 and the inclined groove 2706, and a retardation groove 2707 is also connected at the connection between the return horizontal groove 2704 and the inclined groove 2706. A follower 28 is also hinged on the rectangular plate 27, and the rotating axis of the follower 28 is connected to a torsion spring, and the follower 28 is located at the connection between the inclined groove 2706, the return horizontal groove 2704 and the retardation groove 2707; the behavior control groove includes a connected straight section 2701, an inclined section 2702 and a vertical section 2703, and the length of the inclined groove 2706 is greater than the length of the inclined section 2702.

[0062] When the upper machine head 9 and the lower machine head 10 are located at the welding starting point, the boss 25 is located at the connection between the return vertical groove 2705 and the straight section 2701. After welding begins, the boss 25 first slides along the straight section 2701, and the first wheel approaches the second wheel. After the boss 25 moves to the inclined section 2702, the boss 25 will drive the sleeve plate 23 to give way. Specifically, the sleeve plate 23 drives the locking rod 26 to gradually move through the lug 24. The locking rod 26 is gradually pulled out from the locking groove 1601 corresponding to the No. 1 wheel, and the cylindrical spring 20 is compressed. After the No. 1 wheel contacts the No. 2 wheel, the locking rod 26 is completely pulled out from the locking groove 1601, and the No. 1 wheel is reset under the rebound action of the tension spring 19. Subsequently, after the protruding column 25 moves to the vertical section 2703, the cylindrical spring 20 rebounds, and the locking rod 26 rises to cooperate with the locking groove 1601 corresponding to the No. 2 wheel, so that the No. 2 wheel rolls with the welding head;

[0063] In the latter part of the welding stroke, the boss 25 will move into the inclined groove 2706, and the boss 25 will cause the follower 28 to swing toward the return transverse groove 2704, and then the boss 25 will slide into the hysteresis groove 2707, and the follower 28 will swing back to its original position under the action of the torsion spring;

[0064] After welding is completed, the upper slide 6 and the lower slide 7 need to be reset. At this time, the boss 25 moves along the retardation groove 2707 and the return horizontal groove 2704 toward the return vertical groove 2705. After the boss 25 reaches the return vertical groove 2705, the cylindrical spring 20 rebounds, causing the boss 25 to rise and reset to the initial point.

[0065] As another embodiment of the present invention, in order to realize the continuous splicing of multiple plates, a technical idea is also proposed in this embodiment, please refer to Fig.11 , a movable leg 301 is provided at the side end of the leg 3, and at least one guide rod 31 fixed on the leg 3 passes through the movable leg 301 and is slidably connected to the movable leg 301. Of course, the follower arm 8 is a telescopic structure at this time, and an extension guide rod 801 is added to the original follower arm 8;

[0066] In order to achieve driving, a telescopic driving member is installed on the fastening beam 4, and the movable end of the telescopic driving member is fixed to the movable leg 301. The movable leg 301 and the overall movement installed on the movable leg 301 are driven by the telescopic driving member of the facility to blank out the width of a plate, so that after the welding of two plates is completed, the movable leg 301 as a whole is moved horizontally by the width of a plate, and another plate is placed in the welding position to achieve the welding of the third plate with the first two plates, and so on. Continuous panel processing of multiple plates can be achieved to increase its functionality.

[0067] As another embodiment of the present invention, a double-sided friction stir welding panel assembly method is also proposed, using the panel assembly device, comprising the following steps:

[0068] Step 1: Place two plates to be welded in the frame structure;

[0069] Step 2: Multiple limiting wheels 18 on both sides of the frame structure apply pressure to the sides of the plates to keep the two plates in a butt-jointed state;

[0070] Step 3, welding starts, the lateral movement mechanism cooperates with multiple sets of sliding guide mechanisms in sequence, causing multiple limiting wheels 18 to roll in sequence along the length direction of the plate, and in the width direction of the plate, the limiting wheels 18 are flush with the welding head;

[0071] Step 4: After welding is completed, the upper ram 6 and the lower ram 7 are reset, the limiting wheel 18 releases the pressure on the plate, and the welded plate is removed.

[0072] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0073] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-sided friction stir welding panel assembly device, comprising four legs (3) arranged opposite to each other in pairs, two upper beams (1) and a lower beam (2) respectively fixed on two legs (3) located on the same side and distributed up and down, and a fastening beam (4) connecting the two upper beams (1) to form a frame structure; in, An upper slide bolster (6) and a lower slide bolster (7) are movably provided on the frame structure, and an upper head (9) and a lower head (10) are respectively provided on the upper slide bolster (6) and the lower slide bolster (7). The upper slide bolster (6) and the lower slide bolster (7) can respectively drive the upper head (9) and the lower head (10) to move along the length direction of the frame structure, so as to perform double-sided welding on the plate; It is characterized by further comprising: A plurality of limiting wheels (18) are respectively provided on both sides of the frame structure, and the plurality of limiting wheels (18) are equidistantly distributed along the length direction of the frame structure, and are used for clamping and limiting the plate to be welded, and each of the plurality of limiting wheels (18) is connected to a group of sliding guide mechanisms provided on the upper crossbeam (1), and the sliding guide mechanisms cooperate with a transverse movement mechanism provided on the lower lower pillow (7); During the welding process, the transverse movement mechanism can cooperate with multiple groups of the sliding guide mechanisms in sequence, causing the multiple limiting wheels (18) to move in sequence along the length direction of the frame structure, and the central axes of the limiting wheels (18) and the welding heads are parallel. When the limiting wheels (18) move, the surface formed by the central axes of the limiting wheels (18) and the welding heads is perpendicular to the length direction of the frame structure.

2. The double-sided friction stir welding panel assembly equipment according to claim 1, characterized in that: A second guide rail (13) is fixedly provided on the side of the frame structure, the sliding guide mechanism comprises a slider (14) slidably engaged in the second guide rail (13) and an assembly plate (15) fixedly connected to the slider (14), the limiting wheel (18) is movably arranged on the assembly plate (15), and a tension spring (19) is further provided between the assembly plate (15) and the upper crossbeam (1).

3. The double-sided friction stir welding panel assembly equipment according to claim 2, characterized in that: A hydraulic cylinder (17) is mounted on the assembly plate (15); a mounting block (1701) is fixed to the movable end of the hydraulic cylinder (17); the limiting wheel (18) is rotatably mounted in the mounting block (1701); and the hydraulic cylinder (17) is used to drive the limiting wheel (18) to move toward the plate to be welded; A second boss (1501) is also fixedly provided on the assembly plate (15); one end of the tension spring (19) is connected to the second boss (1501), and the other end is connected to the first boss (101) fixedly provided on the upper crossbeam (1).

4. The double-sided friction stir welding panel assembly equipment according to claim 3, characterized in that: The transverse movement mechanism comprises a follower arm (8) fixedly connected to the lower sliding pillow (7) and a locking rod (26) movably arranged on the follower arm (8); the locking rod (26) is connected to an ejection assembly installed on the follower arm (8), and the locking rod (26) can move in a vertical direction on the follower arm (8) and cooperate with a locking structure arranged on the assembly plate (15).

5. The double-sided friction stir welding panel assembly equipment according to claim 4, characterized in that: The locking structure comprises a locking block (16) fixed on the assembly plate (15), and the locking block (16) is provided with a locking groove (1601) adapted to the locking rod (26), and the locking groove (1601) is arranged in a "U" shape.

6. The double-sided friction stir welding panel assembly equipment according to claim 5, characterized in that: The ejection assembly comprises a column (22) fixed to the side of the follower arm (8) through a protruding block (21) and a column spring (20) sleeved on the outer periphery of the column (22); the follower arm (8) is also slidably provided on a sleeve plate (23); the column (22) passes through a lug (24) fixed on the sleeve plate (23) and is slidably connected to the lug (24); two ends of the column spring (20) are respectively connected to the protruding block (21) and the lug (24); the locking rod (26) is fixed to the lug (24); a lug (25) is also fixedly provided on a side of the sleeve plate (23) away from the lug (24); the lug (25) is connected to a limited position guiding structure.

7. The double-sided friction stir welding panel assembly equipment according to claim 6, characterized in that: The position limiting guide structure comprises a rectangular plate (27) fixedly connected to the two legs (3), the rectangular plate (27) being provided with a slot body adapted to the convex column (25), the convex column (25) extending into the slot body and being slidably connected to the rectangular plate (27); The trough body comprises a plurality of connected behavior control troughs and a return vertical trough (2705) and an inclined trough (2706) respectively connected to the head and tail ends of the behavior control troughs; a return horizontal trough (2704) is connected between the return vertical trough (2705) and the inclined trough (2706); and a retardation trough (2707) is also connected at the connection between the return horizontal trough (2704) and the inclined trough (2706).

8. The double-sided friction stir welding panel assembly equipment according to claim 7, characterized in that: A follower (28) is also hinged on the rectangular plate (27), the rotation axis of the follower (28) is connected to a torsion spring, and the follower (28) is located at the connection between the inclined groove (2706), the return transverse groove (2704) and the retardation groove (2707); The behavior control groove comprises a connected straight section (2701), an inclined section (2702) and a vertical section (2703), and the length of the inclined groove (2706) is greater than the length of the inclined section (2702).

9. A double-sided friction stir welding panel assembly method, using the panel assembly equipment as claimed in claim 1, characterized in that: The following steps are involved: Step 1: Place two plates to be welded in the frame structure; Step 2: a plurality of limiting wheels (18) on both sides of the frame structure apply pressure to the sides of the plates, so that the two plates are kept in a butt-jointed state; Step 3, welding begins, the transverse movement mechanism cooperates with the plurality of sliding guide mechanisms in sequence, causing the plurality of limiting wheels (18) to roll in sequence along the length direction of the plate, and in the width direction of the plate, the limiting wheels (18) are flush with the welding head; Step 4: After welding is completed, the upper ram (6) and the lower ram (7) are reset, the limiting wheel (18) releases the pressure on the plate, and the welded plate is removed.

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