Welding equipment for large cast-weld assembly

Abstract

The invention discloses welding equipment for a large cast-weld assembly. The welding equipment comprises a welding needle for welding; the linkage mechanism is arranged on the outer side of the welding needle, the linkage mechanism comprises a ball screw, two rotating discs used for clamping a weldment are arranged outside the ball screw, and rotating rods used for supporting the rotating discs to rotate are arranged outside the two rotating discs; one end of the rotating rod on one side and one end of the ball screw are fixedly connected with transmission wheels, the outer surfaces of the transmission wheels on the two sides are in transmission connection through a transmission belt, and one end of the rotating rod on the other side is fixedly connected with a rotating motor through a coupler; relates to the technical field of welding equipment and solves the problems that when an existing casting welding device is used, due to the fact that movement of a welding needle and a weldment is independent, mistaken welding or welding omission is prone to occurring during welding, and meanwhile the requirements of welding seams with different widths cannot be met due to the fact that the movement size of the welding needle is fixed.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to welding equipment for large-scale cast-welded assemblies. Background Art

[0002] Castings are parts commonly used in mechanical processing and are usually connected by welding. The welds at the joints are generally circular. This welding method has weak strength during use and is prone to breakage or gaps. The invention patent with application number CN202111527465.9 discloses a casting welding device, including a rotatable welding disk. By improving the ordinary circular weld into a wavy weld, the weld length increases after welding, and the welding strength also increases accordingly. This device can weld concave and convex wavy welds.

[0003] Although the device has the above advantages, it still has the following defects in actual use:

[0004] 1) During the continuous welding process, the movement of the welding needle and the weldment are independent of each other, which may easily lead to the problem of wrong welding or missing welding during actual welding;

[0005] 2) During the welding process, a wavy weld is formed by the reciprocating motion of the welding needle, but the size of the reciprocating motion of the welding needle is fixed and cannot meet the needs of welds of different widths.

[0006] Therefore, it is necessary to solve the problems that still exist in the above-mentioned device. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a welding device for large cast-welded assemblies, which solves the problem that when the existing casting welding device is used, the movements of the welding needle and the weldment are independent of each other, which may lead to wrong welding or missing welding during welding, and the movement size of the welding needle is fixed, which cannot meet the requirements of welds of different widths.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A welding device for large cast-weld assemblies, comprising:

[0009] Solder pins for soldering;

[0010] A linkage mechanism, the linkage mechanism is arranged on the outside of the welding needle, the linkage mechanism includes a ball screw, two rotating disks for clamping the weldment are arranged outside the ball screw, and a rotating rod for supporting the rotation thereof is arranged outside the two rotating disks, one end of the rotating rod on one side and one end of the ball screw are fixedly connected with a transmission wheel, the outer surfaces of the transmission wheels on both sides are connected by transmission belts, and one end of the rotating rod on the other side is fixedly connected with a rotating motor through a coupling;

[0011] The toggle assembly is arranged outside the ball screw and moves synchronously with the sliding end of the ball screw to drive the welding needle to move synchronously with the turntable.

[0012] Preferably, the outer surfaces of the rotating rods on both sides are rotatably connected with support plates, the outer surfaces of the support plates are fixedly connected with a base, the rotating motor is fixedly mounted on the outer surface of one side support plate, one end of the rotating rods on both sides are fixedly connected with a sliding tube, the inside of the sliding tube is slidably connected with a sliding rod, one end of the sliding rod is fixedly connected to the outer surface of the turntable, one end of the sliding tube is fixedly connected with a splint, the outer surface of the sliding tube is threadedly connected with a screw sleeve, and the outer surface of the splint is movably connected to the body of the screw sleeve.

[0013] Preferably, the toggle assembly includes three sliding frames, the outer surfaces of the upper and middle two sliding frames are fixedly connected, the outer surfaces of the middle and lower two sliding frames are fixedly connected to the outer surface of the support plate, the interiors of the upper and lower two sliding frames are slidably connected with sliders, the outer surfaces of the two sliders are movably connected with toggle plates, the bodies of the two toggle plates are provided with through sliding grooves, the interiors of the two sliding grooves and the body of the upper toggle plate are movably connected with pin rods, and the outer surfaces of the three pin rods are respectively fixedly connected to the outer surfaces of the two sliders and the sliding end of the ball screw.

[0014] Preferably, a through bar groove is provided on the body of the lower sliding frame, a lifting rod is movably connected inside the bar groove, and an output end of the lifting rod is fixedly connected to the outer surface of the welding pin.

[0015] Preferably, a locking unit is provided on the body of the upper slider, and the locking unit includes connecting plates, which are respectively provided on both sides of the interior of the upper slider, and the outer surfaces of the two connecting plates are fixedly connected with clamping rods, one end of the clamping rods on both sides are respectively slidably connected with the body of the upper slider and the body of the slide frame, and the outer surfaces of the clamping rods on both sides are sleeved with compression springs, and the two ends of the compression springs are respectively fixedly connected with the outer surface of the connecting plate and the interior of the upper slider.

[0016] Preferably, the upper slider is internally rotatably connected to a cam, the outer surface of the cam is movably connected to the outer surfaces of the connecting plates on both sides, the outer surface of the cam is fixedly connected to a drive motor, and the outer surface of the drive motor is fixedly connected to the inner part of the upper slider.

[0017] Preferably, an adjustment unit is provided on the outside of the shift plate, and the adjustment unit includes a screw, one end of which is embedded and rotatably connected to the outer surface of the lower shift plate, a nut is fixedly connected to the outer surface of the screw, and a spiral tube is threadedly connected to the outer surface of the screw.

[0018] Preferably, one end of the spiral tube is fixedly connected to an arc bar, the outer surface of the arc bar is provided with an arc groove, the inside of the arc groove is movably connected to an arc block, the outer surface of the arc block is fixedly connected to the outer surface of the upper shift plate, both sides of the outer surface of the arc block are movably connected to solid blocks, and the outer surfaces of the solid blocks on both sides are respectively fixedly connected to the two sides of the inside of the arc groove.

[0019] Beneficial Effects

[0020] The present invention provides a welding device for large cast-welded assemblies. Compared with the prior art, the device has the following beneficial effects:

[0021] (1) By setting up a linkage mechanism, when the rotating motor drives the weldment to rotate through two sets of rotating rods and a rotating disk, the ball screw drives the welding needle to perform synchronous reciprocating motion through the transmission action of the transmission wheel and the transmission belt, so that the movement of the welding needle and the weldment is synchronized, avoiding the problem of wrong welding or missing welding.

[0022] (2) By setting up a toggle assembly and utilizing the connection between the middle pin and the sliding end of the ball screw, the toggle plate can toggle the slider to follow the movement, thereby driving the welding needle to reciprocate. At the same time, through the movement of the middle pin inside the slide groove on one side, the toggle plates on both sides can also be toggled to rotate along the upper pin, thereby providing two linkage modes, and the latter can provide movement paths of different lengths to meet the needs of different widths of welds.

[0023] (3) By setting a locking unit and using a driving motor to drive the cam to rotate, the cam provides a distance of contact with the connecting plate to control the relative position of the clamping rod, and by pushing the clamping rod to slide out and engage with the upper slide frame, the upper slide block is locked, so that the shift plate can rotate around the upper pin rod to provide movement paths of different sizes.

[0024] (4) By setting up an adjustment unit, the screw is rotated by a nut, and the distance between the two side shift plates is adjusted through the threaded connection of the screw and the screw tube, so as to control the movement path of the lower slider. At the same time, by using the movement of the arc block inside the arc groove, when the lower slider has not reached the end of the movement of the sliding end of the ball screw, the ball screw can continue to shift the upper shift plate to rotate independently, thereby avoiding affecting the linkage between the ball screw and the turntable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the external structure of the present invention;

[0026] Figure 2 A three-dimensional diagram of the internal structure of the slide tube of the present invention;

[0027] Figure 3 It is a three-dimensional diagram of the external structure of the slider of the present invention;

[0028] Figure 4 A three-dimensional diagram of the internal structure of the arc strip of the present invention;

[0029] Figure 5 It is a three-dimensional diagram of the internal structure of the slider of the present invention.

[0030] In the figure: 1. welding needle; 2. ball screw; 3. toggle assembly; 31. slide frame; 32. slider; 33. locking unit; 331. connecting plate; 332. clamping rod; 333. compression spring; 334. cam; 335. driving motor; 34. toggle plate; 35. adjusting unit; 351. screw rod; 352. nut; 353. screw tube; 354. arc strip; 355. arc groove; 356. arc block; 357. solid block; 36. slide groove; 37. pin rod; 38. strip groove; 39. lifting rod; 4. turntable; 5. rotating rod; 6. transmission wheel; 7. rotating motor; 8. transmission belt; 9. support plate; 10. base; 11. slide tube; 12. slide rod; 13. clamping plate; 14. screw sleeve. DETAILED DESCRIPTION

[0031] 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.

[0032] See also Figure 1-5 The present invention provides a technical solution: a welding device for large cast-weld assemblies:

[0033] Embodiment 1: Refer to the attached manual Figure 1 , Attachment Figure 2 ;

[0034] It includes a welding needle 1, a linkage mechanism is arranged on the outside of the welding needle 1, the linkage mechanism includes a ball screw 2, the sliding end of the ball screw 2 is fixed in size for reciprocating on the screw, a toggle assembly 3 is arranged on the outside of the ball screw 2, two turntables 4 are arranged on the outside of the ball screw 2, an existing clamping mechanism can be arranged on the turntable 4 to clamp the weldment, a rotating rod 5 is arranged on the outside of the two turntables 4, a transmission wheel 6 is fixedly connected to the rotating rod 5 on one side and one end of the ball screw 2, the two transmission wheels 6 are of different sizes to provide a certain transmission ratio, and the transmission ratio is related to the outer diameter of the weldment, the outer surfaces of the transmission wheels 6 on both sides are connected for transmission through a transmission belt 8, one end of the rotating rod 5 on the other side is fixedly connected to a rotating motor 7 through a coupling, the rotating motor 7 is electrically connected to an external control circuit, the outer surfaces of the rotating rods 5 on both sides are penetrated and rotatably connected with a support plate 9, and the connection between the support plate 9 and the rotating rod 5 is provided with a rotation damping measure and The axial limiting measures are as follows: the outer surface of the support plate 9 is fixedly connected with a base 10, and the rotating motor 7 is fixedly arranged on the outer surface of one side support plate 9. One end of the rotating rods 5 on both sides is fixedly connected with a sliding tube 11, and the inner side of the sliding tube 11 is slidably connected with a sliding rod 12. The sliding rod 12 is cylindrical so as to facilitate axial sliding adjustment of the distance and radial rotation adjustment of the docking angle. One end of the sliding rod 12 is fixedly connected to the outer surface of the turntable 4, and one end of the sliding tube 11 is fixedly connected with a splint 13. The splint 13 is made of a material with good toughness, pressure resistance, wear resistance and good friction, and is arranged at equal angles around one end of the sliding tube 11, and the multiple splints 13 are squeezed and closed to form a hollow hemispherical shape. The outer surface of the sliding tube 11 is threadedly connected with a screw sleeve 14, and one end of the screw sleeve 14 is provided with a spherical arc connecting hole. By obliquely squeezing the splint 13, one end of the splint 13 contacts the sliding rod 12 for locking, and the outer surface of the splint 13 is movably connected with the body of the screw sleeve 14.

[0035] In this embodiment, first, a transmission wheel 6 of appropriate specifications is selected according to the outer diameter of the weldment, and the transmission wheel 6 is respectively installed on one end of the rotating rod 5 on one side and the end of the ball screw 2, and the transmission belt 8 is mounted on the two transmission wheels 6. Then, the two workpieces to be welded are clamped on the turntables 4 on both sides through the clamping mechanism, and then the slide bar 12 is slid so that the turntable 4 drives one end of the weldment to move to the bottom of the welding needle 1, and the weldments on both sides are fitted to each other, and then the screw sleeve 14 is rotated to make it move along the sliding tube 11, and the clamping plate 13 is closed by squeezing it, thereby locking the slide bar 12, and then the rotating motor 7 drives the workpiece to rotate through the rotating rod 5 and the turntable 4. At the same time, through the transmission of the transmission belt 8, the sliding end of the ball screw 2 drives the welding needle 1 to reciprocate left and right synchronously, thereby forming a wavy weld on the weldment.

[0036] Embodiment 2: Based on Embodiment 1, refer to the attached Figure 1 , Attachment Figure 3 ;

[0037] The toggle assembly 3 includes three slide frames 31, the outer surfaces of the upper and middle slide frames 31 are fixedly connected, the outer surfaces of the middle and lower slide frames 31 are fixedly connected to the outer surface of the support plate 9, the interiors of the upper and lower slide frames 31 are slidably connected with sliders 32, the outer surfaces of the two sliders 32 are movably connected with toggle plates 34, the bodies of the two toggle plates 34 are provided with through slide grooves 36, the interiors of the two slide grooves 36 and the body of the upper toggle plate 34 are movably connected with pin rods 37, and the lower pin rod 37 is controlled by the lower toggle plate 34 Due to the influence of the position of the upper slide groove 36, the distance of its lateral movement can be adjusted. The outer surfaces of the three pins 37 are fixedly connected to the outer surfaces of the two sliders 32 and the sliding end of the ball screw 2 respectively. The body of the lower slide frame 31 is provided with a through groove 38. The interior of the groove 38 is movably connected with a lifting rod 39. The lifting rod 39 is made of an existing electric push rod and is electrically connected to an external control circuit. By driving the welding needle 1 to rise and fall, it is convenient to weld the weldment. The output end of the lifting rod 39 is fixedly connected to the outer surface of the welding needle 1.

[0038] In this embodiment, when the lower side of the slide groove 36 on the lower dial plate 34 fits with the lower pin rod 37, the sliding end of the ball screw 2 is synchronously moved horizontally through the upper and lower sliders 32 through the action of the middle pin rod 37, and the lifting rod 39 follows the synchronous reciprocating motion inside the groove 38, and through the extension and retraction of the output end, the welding needle 1 is driven to follow the synchronous horizontal and longitudinal reciprocating motion to weld the wavy weld on the weldment.

[0039] Embodiment 3: Based on Embodiment 2, refer to the attached Figure 1 , Attachment Figure 5 ;

[0040] The upper slider 32 is provided with a locking unit 33 on the body, and the locking unit 33 includes a connecting plate 331, which plays a supporting and abutting role. The connecting plates 331 are respectively arranged on both sides of the upper slider 32. The outer surfaces of the two connecting plates 331 are fixedly connected with a clamping rod 332. The clamping rod 332 is made of a pressure-resistant and wear-resistant material. In a preferred embodiment, more than two clamping rods 332 are arranged on the connecting plate 331 to improve the balance of movement and force. One end of the clamping rod 332 on both sides is respectively slidably connected with the body of the upper slider 32 and the body of the sliding frame 31. The outer surfaces of the clamping rods 332 on both sides are sleeved with compression springs 333, which can be The elastic force supports the position of the locking rod 332, and at the same time, the rebound facilitates the reset of the locking rod 332 after the force is applied. The two ends of the compression spring 333 are respectively fixedly connected to the outer surface of the connecting plate 331 and the interior of the upper slider 32. The interior of the upper slider 32 is rotatably connected to a cam 334. The cam 334 is elliptical so as to abut and maintain contact with the connecting plates 331 on both sides in real time through the four sides. The outer surfaces of the cam 334 are respectively movably connected to the outer surfaces of the connecting plates 331 on both sides. The outer surface of the cam 334 is fixedly connected to a driving motor 335. The driving motor 335 is electrically connected to an external control circuit, and the outer surface of the driving motor 335 is fixedly connected to the interior of the upper slider 32.

[0041] In this embodiment, when different widths of welds need to be provided, the driving motor 335 drives the cam 334 to rotate, and the protruding two ends of the cam 334 abut against the connecting plates 331 on both sides, thereby pushing the connecting plates 331 on both sides to slide against each other and compressing the compression spring 333, and allowing the clamping rod 332 to follow the movement and clamp with the upper slide frame 31, thereby completing the locking of the upper slide block 32, and allowing the two side plates 34 to rotate left and right around the upper pin rod 37, and providing reciprocating motion paths of different sizes through the reciprocating swing of the plate 34, thereby realizing the adjustment of the weld width.

[0042] Embodiment 4: Based on Embodiment 3, refer to the attached Figure 1 , Attachment Figure 4 ;

[0043] An adjusting unit 35 is provided on the outside of the dial plate 34. The adjusting unit 35 includes a screw rod 351. One end of the screw rod 351 is embedded and rotatably connected with the outer surface of the lower dial plate 34. The connection between the screw rod 351 and the lower dial plate 34 has an axial limiting measure. A nut 352 is fixedly connected to the outer surface of the screw rod 351. The nut 352 facilitates the rotation of the screw rod 351. A screw tube 353 is threadedly connected to the outer surface of the screw 351. An arc bar 354 is fixedly connected to one end of the screw tube 353. The arc bar 354 and the upper pin rod 37 are coaxially arranged. An arc groove 355 is provided on the outer surface of the arc bar 354. An arc block 356 is movably connected inside the arc groove 355. The arc block 356 is made of a magnet and has a T-shaped cross section to enhance the connection. In order to improve the stability of the connection, as a method of optimization, the arc groove 355 is provided with a guide rod with a matching shape and curvature, the guide rod is slidably connected with the arc block 356 body, and springs acting on the arc block 356 are sleeved on both sides, and the elastic force is used as damping to improve the stability of the arc block 356. The outer surface of the arc block 356 is fixedly connected to the outer surface of the upper dial plate 34, and both sides of the outer surface of the arc block 356 are movably connected with solid blocks 357. The solid blocks 357 are made of magnets, which can limit the movement of the arc block 356 and maintain the position of the arc block 356 through the magnetic repulsion to improve its stability. The outer surfaces of the solid blocks 357 on both sides are fixedly connected to the two sides of the inside of the arc groove 355 respectively.

[0044] In this embodiment, the screw rod 351 is first rotated by the nut 352, and the distance between the two shift plates 34 is adjusted by adjusting the overall length of the screw rod 351 and the screw tube 353, thereby adjusting the relative position of the lower pin rod 37 inside the slide groove 36, so that after the upper slider 32 is locked, the lateral movement distance of the lower slider 32 is controlled. At the same time, when the lower slider 32 moves to the path limit and the sliding end of the ball screw 2 has not moved to the limit, the sliding end of the ball screw 2 continues to move and drives the upper shift plate 34 to continue to rotate. At this time, the arc block 356 slides inside the arc groove 355 to overcome the damping effect to support one side of the upper shift plate 34.

[0045] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for large cast-weld assemblies, characterized in that: include: A soldering pin (1) for soldering; A linkage mechanism, the linkage mechanism is arranged on the outside of the welding needle (1), the linkage mechanism comprises a ball screw (2), two rotating disks (4) for clamping the weldment are arranged outside the ball screw (2), and rotating rods (5) for supporting the rotation thereof are arranged outside the two rotating disks (4), one end of the rotating rod (5) on one side and one end of the ball screw (2) are fixedly connected to a transmission wheel (6), the outer surfaces of the transmission wheels (6) on both sides are transmission-connected via a transmission belt (8), and one end of the rotating rod (5) on the other side is fixedly connected to a rotating motor (7) via a coupling; A toggle assembly (3) is arranged outside the ball screw (2) and drives the welding needle (1) to move synchronously with the rotating disk (4) by following the synchronous movement of the sliding end of the ball screw (2).

2. A welding device for large cast-weld assemblies according to claim 1, characterized in that: The outer surfaces of the rotating rods (5) on both sides are rotatably connected with support plates (9), the outer surfaces of the support plates (9) are fixedly connected with a base (10), the rotating motor (7) is fixedly arranged on the outer surface of the support plate (9) on one side, one end of the rotating rods (5) on both sides is fixedly connected with a sliding tube (11), the interior of the sliding tube (11) is slidably connected with a sliding rod (12), one end of the sliding rod (12) is fixedly connected to the outer surface of the rotating disk (4), one end of the sliding tube (11) is fixedly connected with a clamping plate (13), the outer surface of the sliding tube (11) is threadedly connected with a screw sleeve (14), and the outer surface of the clamping plate (13) is movably connected to the body of the screw sleeve (14).

3. A welding device for large cast-weld assembly according to claim 2, characterized in that: The toggle assembly (3) comprises three slide frames (31), the outer surfaces of the upper and middle two slide frames (31) are fixedly connected, the outer surfaces of the middle and lower two slide frames (31) are fixedly connected to the outer surface of the support plate (9), the interiors of the upper and lower two slide frames (31) are slidably connected with sliders (32), the outer surfaces of the two sliders (32) are movably connected with toggle plates (34), the bodies of the two toggle plates (34) are provided with through slide grooves (36), the interiors of the two slide grooves (36) and the body of the upper toggle plate (34) are movably connected with pins (37), and the outer surfaces of the three pins (37) are respectively fixedly connected to the outer surfaces of the two sliders (32) and the sliding end of the ball screw (2).

4. A welding device for large cast-weld assembly according to claim 3, characterized in that: The body of the lower sliding frame (31) is provided with a through slot (38), the interior of the slot (38) is movably connected to a lifting rod (39), and the output end of the lifting rod (39) is fixedly connected to the outer surface of the welding needle (1).

5. The welding equipment for large cast-weld assembly according to claim 3, characterized in that: A locking unit (33) is provided on the body of the upper slider (32), and the locking unit (33) includes a connecting plate (331), and the connecting plates (331) are respectively provided on both sides of the interior of the upper slider (32), and the outer surfaces of the two connecting plates (331) are fixedly connected with a clamping rod (332), and one end of the clamping rod (332) on both sides is respectively slidably connected with the body of the upper slider (32) and the body of the slide frame (31), and the outer surfaces of the clamping rod (332) on both sides are sleeved with a compression spring (333), and the two ends of the compression spring (333) are respectively fixedly connected with the outer surface of the connecting plate (331) and the interior of the upper slider (32).

6. A welding device for large cast-weld assembly according to claim 5, characterized in that: The upper slider (32) is rotatably connected to a cam (334) inside, and the outer surface of the cam (334) is movably connected to the outer surfaces of the connecting plates (331) on both sides, and the outer surface of the cam (334) is fixedly connected to a drive motor (335), and the outer surface of the drive motor (335) is fixedly connected to the inside of the upper slider (32).

7. A welding device for large cast-weld assembly according to claim 3, characterized in that: An adjustment unit (35) is arranged outside the shifting plate (34), and the adjustment unit (35) comprises a screw rod (351), one end of which is embedded and rotatably connected to the outer surface of the lower shifting plate (34), a nut (352) is fixedly connected to the outer surface of the screw rod (351), and a screw tube (353) is threadedly connected to the outer surface of the screw rod (351).

8. A welding device for large cast-weld assembly according to claim 7, characterized in that: One end of the spiral tube (353) is fixedly connected to an arc bar (354), an outer surface of the arc bar (354) is provided with an arc groove (355), an arc block (356) is movably connected inside the arc groove (355), an outer surface of the arc block (356) is fixedly connected to the outer surface of the upper shift plate (34), both sides of the outer surface of the arc block (356) are movably connected to fixed blocks (357), and the outer surfaces of the fixed blocks (357) on both sides are fixedly connected to the two sides of the inside of the arc groove (355) respectively.

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