Laser welding double-wire feeding device

Abstract

The utility model relates to the technical field of laser welding, in particular to a double-wire feeding device for laser welding, which aims at solving the technical problem of overcoming the defects of a wire feeding structure in the prior art and is mainly realized by the following technical scheme: the double-wire feeding device for laser welding comprises a device frame, a bottom frame, a wire feeding frame, a control screen and a main driving structure, the main driving structure comprises a driving moving part and two wire feeding structures, the driving moving part is in transmission connection with the two wire feeding structures, the driving moving part comprises a driving motor, a driving gear, a driven gear and a transmission shaft, the driving motor is a printing motor, and each wire feeding structure comprises a wire feeding seat plate, a wire feeding main gear, a wire feeding auxiliary gear, a wire feeding wheel and a wire pressing wheel. The double-wire-feeding structure is controlled by a single motor, synchronous adjustment operation is avoided, the overall size is reduced, driving is efficiently controlled through a printing motor, overall response is fast, wire feeding precision is high, and the service life is long.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser welding technical field, concretely relates to a laser welding double wire feeder. BACKGROUND

[0002] Welding technology can simplify the connection assembly process of large equipment, and because the stability of the welded part is higher, welding technology is more widely used at present. As a welding machine used more in welding technology, the disc-shaped welding wire needs to be installed on the welding machine first, and the welding wire is sent out through the wire feeding mechanism arranged on the welding machine, so as to supply the welding gun for use to realize welding.

[0003] The wire feeder in the prior art is mostly one-way wire feeding, and for the case that the weld is relatively large or the weld is uneven, etc. Welding or depression may occur, which cannot effectively fill the weld, affecting product quality. The driving of the double wire feeder is mostly controlled by double motors, and the wire feeding operation is performed after synchronous adjustment. The process is low in operation efficiency and is prone to wire jamming. The double wire feeding structure driven by double motors has a large overall floor area and a heavy overall quality, which is not conducive to transfer operation. SUMMARY

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the defects of the wire feeding structure in the prior art, thereby providing a laser welding double wire feeder.

[0005] The above technical purpose of the utility model is realized by the following technical scheme:

[0006] A laser welding double wire feeder comprises a device frame, a chassis, two wire feeders, a control screen and a main drive structure. The device frame is arranged on the chassis. The wire feeders are arranged opposite to each other on both sides of the device frame and at the same end of the device frame. The wire feeders are rotationally installed on the device frame. The control screen is arranged at one end of the device frame away from the wire feeders. The main drive structure comprises a driving member and two wire feeding structures. The driving member is arranged in the device frame close to the control screen. The wire feeding structures are arranged on opposite sides of the device frame and at one end close to the control screen. The driving member is in transmission connection with the two wire feeding structures.

[0007] By adopting the above technical scheme, the double wire feeder can realize the simultaneous and synchronous feeding of two welding wires, which can conveniently fill the large welding gap during welding, thereby improving the reliability of the welded workpiece and the overall welding quality. Unlike the double motor driving, the double wire feeding structure is driven by a single driving member, which makes the overall transmission simpler and more efficient.

[0008] Further, the driving member comprises a driving motor, a driving gear, a driven gear and a transmission shaft, the driving motor is a printing motor, the output shaft of the driving motor is arranged along the width direction of the device frame, a driving gear is sleeved on the output shaft of the driving motor, a driven gear is arranged below the driving gear in meshing mode, the driving gear and the driven gear are arranged in parallel along the axis, and a coaxial transmission shaft is arranged at the axis of the driven gear, and the transmission shaft extends out of the device frame and is connected with the wire feeding structure.

[0009] By adopting the above technical scheme, the output shaft of the driving motor drives the driving gear to rotate, the driving gear meshes with the driven gear to drive the transmission shaft to rotate, and the transmission shaft extends and is connected with the wire feeding structure, so that the purpose of synchronously controlling the movement of two wire feeding structures by a single motor is achieved, the driving motor is a printing motor, the motor has fast dynamic response, high wire feeding precision, can efficiently control driving and has long service life.

[0010] Further, the driving motor is installed on the motor seat, the motor seat is arranged along the width direction of the device frame, vertical support seats are arranged on the middle parts of the two sides of the motor seat in the length direction and correspond to the driving motor, the support seats and the driving motor are fixed by bolts, support rib plates are further arranged on the sides of the two support seats that are close to each other, the sides of the support rib plates that are in contact with the support seats are arranged perpendicularly, the support rib plates are right-angled triangles and the two right-angled sides thereof are respectively in abutment with the sides of the support seats and the inner bottom surface of the motor seat.

[0011] By adopting the above technical scheme, the motor seat supports the driving motor to ensure stable installation of the driving motor and avoid displacement of the driving motor during movement to affect the structural stability, the support rib plates provide support for the side walls of the motor seat to ensure that the structural strength thereof is sufficient and can support the driving motor on the top.

[0012] Further, the motor seat is installed in the device frame and fixed on the base frame, a base seat boss is arranged on the base frame and corresponds to the motor seat, and the surface area of the base seat boss is greater than the bottom area of the motor seat; insulating sheets are arranged on the two opposite sides of the device frame close to the motor seat in clamping mode, and the area of the insulating sheets is greater than the area of the sides at the two ends of the motor seat in the length direction.

[0013] By adopting the above technical scheme, the base frame extends the base seat boss corresponding to the motor seat to support the motor seat and disperse pressure at the same time; the insulating sheets on the inner sides of the device frame enhance the safety beside the driving motor and avoid the influence of motor driving on the outer wall of the device frame due to electric leakage.

[0014] Further, the two ends of the motor seat close to the wire feeding structure each further extend a transmission seat corresponding to the transmission shaft, a transmission hole is arranged on each transmission seat corresponding to the transmission shaft, the diameter of the transmission hole is greater than the diameter of the transmission shaft, a support bearing matched with the hole diameter is further installed in the transmission hole, and the support bearing is sleeved on the transmission shaft.

[0015] By adopting the technical scheme, the transmission seat supports the two ends of the transmission shaft, facilitates movement of the transmission shaft and limits the movement of the transmission shaft, the supporting bearing provides support and limitation, and the transmission shaft rotates more smoothly.

[0016] Further, the transmission shaft comprises a main shaft body and two connecting shaft bodies which are integrally arranged, the connecting shaft bodies are arranged at the two ends of the main shaft body and have a smaller diameter than the main shaft body, and a recess is arranged at an end of the main shaft body away from the output shaft of the driving motor.

[0017] By adopting the technical scheme, the main shaft body is thicker and facilitates bearing of the driven gear, the recess is arranged at the position corresponding to the driving motor shell to avoid structural interference, and the connecting shaft body is extended to be connected with the wire feeding structure.

[0018] Further, the connecting shaft bodies at the two ends are extended out of the device frame and are respectively connected with the wire feeding structure on the same side, the wire feeding structure on each side comprises a wire feeding seat plate, a wire feeding main gear, two wire feeding auxiliary gears, two wire feeding wheels and two wire pressing wheels, the wire feeding main gear, the wire feeding auxiliary gears, the wire feeding wheels and the wire pressing wheels are arranged in parallel and are positioned and rotatably installed on the wire feeding seat plate, the wire feeding main gear is sleeved on the connecting shaft body, the wire feeding main gear is engaged with two oppositely arranged wire feeding auxiliary gears, the wire feeding auxiliary gears and the wire feeding wheels are coaxially arranged, and the wire pressing wheels are vertically arranged side by side with the wire feeding wheels.

[0019] By adopting the technical scheme, the wire feeding main gear drives the two wire feeding auxiliary gears to rotate, so that the two wire feeding wheels move to feed the wire, and in this process, the wire pressing wheels are always pressed on the wire feeding wheels to provide reasonable pressure on the welding wire, thereby improving the stability and precision of wire feeding.

[0020] Further, a threaded section is further arranged on the outer side wall of the end of the connecting shaft body away from the main shaft body, a locking nut is further screwed on the connecting shaft body, and the inner side of the locking nut is abutted and arranged on the outer side of the wire feeding main gear.

[0021] By adopting the technical scheme, the locking nut arranged by screwing fixes the position of the connecting shaft body, limits the positions of the connecting shaft bodies at the two ends to avoid longitudinal sliding of the transmission shaft, causes the driven gear to disengage from the driving gear or the driven gear to deviate from the structure, and guarantees the safety of the structure.

[0022] In summary, the technical scheme of the utility model has the following advantages:

[0023] 1. The laser welding double wire feeding device can realize synchronous feeding of two welding wires, can conveniently fill a large welding gap during welding, and improves the reliability and overall welding quality of the welding workpiece.

[0024] 2. The laser welding double wire feeding device provided by the utility model, through single driving driving element driving double wire feeding structure operation, unlike prior art double motor driving only using single motor makes overall transmission more simple, reduces parameter adjustment process, single motor driving can guarantee wire feeding consistency and synchronization, subsequent efficiency is higher.

[0025] 3. The laser welding double wire feeding device provided by the utility model, movement transmission part - transmission shaft structure is stable, through cooperation between connecting shaft body and support bearing and locking nut, movement limiting is carried out under the condition of not affecting rotation; motor base structure is stable, support seat and support rib plate, transmission seat and transmission hole are arranged, support function is realized, and different functional parts are borne. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0027] Figure 1 It is a whole structure schematic view of the laser welding double wire feeding device provided in one embodiment of the utility model;

[0028] Figure 2 It is an internal structure schematic view of the laser welding double wire feeding device provided in one embodiment of the utility model;

[0029] Figure 3 It is a longitudinal section structure schematic view of the laser welding double wire feeding device provided in one embodiment of the utility model;

[0030] Figure 4 It is Figure 3 The enlarged structure schematic view of A part in the embodiment;

[0031] Figure 5 It is a local structure schematic view of the wire feeding structure provided in one embodiment of the utility model.

[0032] Mark explanation:

[0033] 1, device frame; 11, insulating sheet; 2, base frame; 21, base boss; 3, wire feeder frame; 4, control screen; 5, main drive structure; 6, drive element; 61, drive motor; 62, driving gear; 63, driven gear; 64, transmission shaft; 641, main shaft body; 6411, let go of the recess; 642, connecting shaft body; 6421, locking nut; 7, wire feeding structure; 71, wire feeding seat plate; 72, wire feeding main gear; 73, wire feeding auxiliary gear; 74, wire feeding wheel; 75, wire pressing wheel; 8, motor base; 81, support seat; 811, support rib plate; 82, transmission seat; 821, transmission hole; 8211, support bearing. DETAILED DESCRIPTION

[0034] The utility model will be further explained in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.

[0035] A laser welding double wire feeding device, as shown in Figure 1 and Figure 2 , comprising device frame 1, base frame 2, two wire feeder frames 3, control screen 4 and main drive structure 5, device frame 1 is installed above base frame 2, two wire feeder frames 3 are arranged on the left end of device frame 1, wire feeder frame 3 is positioned and rotatably installed on device frame 1, control screen 4 is arranged on the right end side of device frame 1, control screen 4 can be inclined for convenient use. Main drive structure 5 includes drive element 6 and two wire feeding structures 7, drive element 6 is arranged in device frame 1 close to the right end, wire feeding structure 7 is arranged on the front and back sides of device frame 1 and close to the right end, and the front and back ends of drive element 6 are in transmission connection with two wire feeding structures 7. The present wire feeding device can realize the synchronous feeding of two welding wires through the arrangement of double wire feeder frames 3 and double wire feeding structures 7, which can more conveniently fill the larger welding gap during welding, thereby improving the reliability and overall welding quality of the welded workpiece; unlike the existing double-motor drive, only a single motor is used to make the overall transmission more simple, and the subsequent efficiency is higher.

[0036] As shown in Figure 2 and Figure 3As shown, the driving member 6 includes a driving motor 61, a driving gear 62, a driven gear 63 and a transmission shaft 64. The driving motor 61 is a printing motor, the output shaft of the driving motor 61 is arranged along the width direction of the device frame 1, the printing motor has fast dynamic response, high wire feeding precision, can efficiently control driving and has long service life. The driving gear 62 is sleeved on the output shaft of the driving motor 61, the driven gear 63 is arranged below the driving gear 62 in meshing mode, the driving gear 62 and the driven gear 63 are arranged in parallel with the axis, the transmission shaft 64 is coaxially arranged at the axis of the driven gear 63, and the transmission shaft 64 extends out of the device frame 1 and is connected with the wire feeding structures 7 at both ends. The output shaft of the driving motor 61 drives the driving gear 62 to rotate, the driving gear 62 meshes with the driven gear 63, drives the transmission shaft 64 to rotate, the transmission shaft 64 extends and is connected with the wire feeding structures 7, so that the purpose of synchronously controlling the movements of the two wire feeding structures 7 by a single motor is achieved.

[0037] As shown in Figure 2 , Figure 3 and Figure 4 , the motor seat 8 is installed in the device frame 1 and fixed on the bottom frame 2, the bottom frame 2 extends a base boss 21 corresponding to the motor seat 8, and the surface area of the base boss 21 is greater than the bottom area of the motor seat 8. The base boss 21 extending corresponding to the motor seat 8 of the bottom frame 2 is used for supporting the motor seat 8 and dispersing pressure at the same time.

[0038] The insulating sheet 11 is clamped and arranged on the two opposite sides of the device frame 1 close to the motor seat 8, and the area of the insulating sheet 11 is greater than the area of the side surface at both ends in the length direction of the motor seat 8. The insulating sheet 11 is located between the motor seat 8 and the wire feeding structure 7. The insulating sheet 11 on the inner side of the device frame 1 enhances the safety beside the driving motor 61, and avoids the influence of motor driving leakage on the outer wall of the device frame 1.

[0039] As shown in Figure 2 , Figure 3 and Figure 4As shown, the driving motor 61 is mounted on the motor seat 8, the motor seat 8 is arranged along the width direction of the device frame 1, and the motor seat 8 supports the driving motor 61 to ensure stable installation of the driving motor 61 and avoid displacement of the driving motor 61 during movement to affect the structural stability. The middle of the length direction of the motor seat 8 corresponds to the driving motor 61 and extends vertically. The vertical support seat 81 is provided on the front and rear sides of the drawing, and the support seat 81 and the driving motor 61 are fixed by bolts (not shown in the drawing). The side of the two support seats 81 close to each other also extends a support rib plate 811. The support rib plate 811 is provided perpendicularly on the side in contact with the support seat 81. The vertical right angle edge of the support rib plate 811 is fixed to the side of the support seat 81, and the horizontal right angle edge of the support rib plate 811 abuts against the inner bottom surface of the motor seat 8. The support rib plate 811 provides support for the side wall of the motor seat 8, ensures that the structural strength is sufficient, and can support the top driving motor 61.

[0040] As shown in Figure 2 , Figure 3 and Figure 4 , the motor seat 8 near the wire feeding structure 7 has a transmission seat 82 corresponding to the transmission shaft 64 at both ends. The transmission hole 821 is provided on each side of the transmission seat 82 corresponding to the transmission shaft 64. The diameter of the transmission hole 821 is greater than the diameter of the transmission shaft 64, and a support bearing 8211 matched in diameter is also mounted in the transmission hole 821. The support bearing 8211 is sleeved on the transmission shaft 64. The transmission seat 82 supports the two ends of the transmission shaft 64, facilitates the movement of the transmission shaft 64, and limits the movement of the transmission shaft 64. The support bearing 8211 provides support and limitation, and also makes the rotation of the transmission shaft 64 more smooth.

[0041] As shown in Figure 2 , Figure 3 , the driving shaft includes a main shaft body 641 and two connecting shaft bodies 642 arranged integrally. The connecting shaft bodies 642 are arranged at both ends of the main shaft body 641 and have a diameter smaller than that of the main shaft body 641. The main shaft body 641 extends a recess 6411 away from the output shaft of the driving motor 61. The recess 6411 is arranged around the outer surface of the main shaft body 641.

[0042] As shown in Figure 2 , Figure 3 and Figure 5As shown, each side wire feeding structure 7 comprises a wire feeding seat plate 71, a wire feeding main gear 72, two wire feeding auxiliary gears 73, two wire feeding wheels 74 and two wire pressing wheels 75, the wire feeding main gear 72, the wire feeding auxiliary gears 73, the wire feeding wheels 74 and the wire pressing wheels 75 are parallel in axis and are rotationally installed on the wire feeding seat plate 71, the wire feeding main gear 72 is sleeved on the connecting shaft body 642, two oppositely arranged wire feeding auxiliary gears 73 are engaged above the wire feeding main gear 72, the wire feeding auxiliary gears 73 and the wire feeding wheels 74 are coaxially arranged, and the wire pressing wheels 75 are vertically arranged side by side with the wire feeding wheels 74. The rotation of the wire feeding main gear 72 drives the two wire feeding auxiliary gears 73 to rotate, so that the two wire feeding wheels 74 move to feed the wire. In this process, the wire pressing wheels 75 are always pressed above the wire feeding wheels 74 to provide reasonable pressure on the welding wire, thereby improving the stability and precision of wire feeding.

[0043] The connecting shaft body 642 extends out of the device frame 1 and is connected with the corresponding side wire feeding structure 7, a threaded segment is arranged on the outer side wall of the outer end of the connecting shaft body 642, a locking nut 6421 is screwed with the threaded segment, and the inner side of the locking nut 6421 is abutted with the outer side of the wire feeding main gear 72. The screwed locking nut 6421 fixes the position of the connecting shaft body 642, limits the two end connecting shaft bodies 642 to avoid the transmission shaft 64 from longitudinally slipping to cause the driven gear 63 and the driving gear 62 to disengage or the driven gear 63 to deviate from the structure to interfere, and ensures the safety of the structure.

[0044] The working principle and use method of the laser welding double wire feeding device are as follows: the transmission shaft 64 sleeved with the driven gear 63 is first installed on the motor seat 8, the transmission shaft 64 extends out of the device frame at both ends and the wire feeding main gears 72 are installed on both ends thereof, then the locking nut 6421 is tightened to limit and fix the transmission shaft 64; then a printing motor with a proper size is selected and the driving gear 62 is sleeved on the output shaft of the driving motor 61, the driving gear 62 and the driven gear 63 are adjusted to engage, then the motor is installed and fixed on the motor seat 8, and finally the wire feeding auxiliary gears 73, the wire feeding wheels 74 and the wire pressing wheels 75 are installed in sequence, and the assembly of the wire feeding structure 7 is completed.

[0045] The preferred embodiments of the utility model are shown and described above, and as mentioned before, it should be understood that the utility model is not limited to the forms disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified by the above-mentioned teaching or related technical knowledge or knowledge within the scope of the utility model conceived herein. The modification and change made by the person skilled in the art should be within the protection scope of the claims attached to the utility model.

Claims

1. A laser welding dual wire feed device, characterized by, The utility model provides a wire feeding device, including device frame (1), underframe (2), two wire feeding frame (3), control screen (4) and main drive structure (5), device frame (1) sets up on underframe (2), wire feeding frame (3) is opposite and sets up at the same end of device frame (1) two sides, wire feeding frame (3) is positioned rotationally installed on device frame (1), control screen (4) sets up at the end of device frame (1) away from wire feeding frame (3), main drive structure (5) includes drive moving part (6) and two wire feeding structure (7), drive moving part (6) sets up in device frame (1) near control screen (4), wire feeding structure (7) sets up on the opposite two sides outside device frame (1) and sets up near control screen (4) one end, drive moving part (6) is transmission connection with two wire feeding structure (7).

2. The dual wire feed device for laser welding according to claim 1, wherein The utility model provides a wire feeding device, including device frame (1), underframe (2), two wire feeding frame (3), control screen (4) and main drive structure (5), device frame (1) sets up on underframe (2), wire feeding frame (3) is opposite and sets up at the same end of device frame (1) two sides, wire feeding frame (3) is positioned rotationally installed on device frame (1), control screen (4) sets up at the end of device frame (1) away from wire feeding frame (3), main drive structure (5) includes drive moving part (6) and two wire feeding structure (7), drive moving part (6) sets up in device frame (1) near control screen (4), wire feeding structure (7) sets up on the opposite two sides outside device frame (1) and sets up near control screen (4) one end, drive moving part (6) is transmission connection with two wire feeding structure (7).

3. The apparatus of claim 2, wherein the laser welding dual wire feed device further comprises a wire guide. The utility model discloses a wire feeding device, including device frame (1), underframe (2), two wire feeding frame (3), control screen (4) and main drive structure (5), device frame (1) sets up on underframe (2), wire feeding frame (3) is opposite and sets up at the same end of device frame (1) two sides, wire feeding frame (3) is positioned rotationally installed on device frame (1), control screen (4) sets up at the end of device frame (1) away from wire feeding frame (3), main drive structure (5) includes drive moving part (6) and two wire feeding structure (7), drive moving part (6) sets up in device frame (1) near control screen (4), wire feeding structure (7) sets up on the opposite two sides outside device frame (1) and sets up near control screen (4) one end, drive moving part (6) is transmission connection with two wire feeding structure (7).

4. The apparatus of claim 3, wherein the laser welding dual wire feed device further comprises a wire guide. The utility model discloses a wire feeding device, including device frame (1), underframe (2), two wire feeding frame (3), control screen (4) and main drive structure (5), device frame (1) sets up on underframe (2), wire feeding frame (3) is opposite and sets up at the same end of device frame (1) two sides, wire feeding frame (3) is positioned rotationally installed on device frame (1), control screen (4) sets up at the end of device frame (1) away from wire feeding frame (3), main drive structure (5) includes drive moving part (6) and two wire feeding structure (7), drive moving part (6) sets up in device frame (1) near control screen (4), wire feeding structure (7) sets up on the opposite two sides outside device frame (1) and sets up near control screen (4) one end, drive moving part (6) is transmission connection with two wire feeding structure (7).

5. The apparatus of claim 4, wherein the laser welding dual wire feed device further comprises a wire guide. The motor seat (8) is provided with a transmission seat (82) extending from both ends of the motor seat (8) close to the wire feeding structure (7) corresponding to the transmission shaft (64). A transmission hole (821) is provided on each side of the transmission seat (82) corresponding to the transmission shaft (64). The diameter of the transmission hole (821) is larger than the diameter of the transmission shaft (64). A support bearing (8211) matching the hole diameter is also installed in the transmission hole (821). The support bearing (8211) is sleeved on the transmission shaft (64).

6. The apparatus of claim 5, wherein the laser welding dual wire feed device further comprises a wire guide. The transmission shaft (64) comprises an integrally arranged main shaft body (641) and two connecting shaft bodies (642); the connecting shaft bodies (642) are arranged at both ends of the main shaft body (641) and have a diameter smaller than that of the main shaft body (641); a clearance groove (6411) extends from one end of the main shaft body (641) away from the output shaft of the drive motor (61); and the clearance groove (6411) is arranged on the outer surface of the main shaft body (641).

7. The apparatus of claim 6, wherein the laser welding dual wire feed device further comprises a wire guide. The connecting shafts (642) at both ends extend out of the device frame (1) and are respectively connected to the wire feeding structure (7) on the same side. The wire feeding structure (7) on each side includes a wire feeding seat plate (71), a wire feeding main gear (72), two wire feeding auxiliary gears (73), two wire feeding wheels (74) and two wire pressing wheels (75). The axes of the wire feeding main gear (72), the wire feeding auxiliary gear (73), the wire feeding wheels (74) and the wire pressing wheels (75) are parallel and are all positioned and rotatably mounted on the wire feeding seat plate (71). The wire feeding main gear (72) is sleeved on the connecting shaft (642). Two oppositely arranged wire feeding auxiliary gears (73) are engaged above the wire feeding main gear (72). The wire feeding auxiliary gear (73) and the wire feeding wheels (74) are coaxially arranged, and the wire pressing wheels (75) and the wire feeding wheels (74) are vertically arranged in parallel.

8. The dual wire laser welding apparatus of claim 7, wherein, A threaded section is also provided on the outer side wall of one end of the connecting shaft (642) away from the main shaft (641), and a locking nut (6421) is also threaded on the connecting shaft (642), and the inner side of the locking nut (6421) is arranged to abut against the outer side of the wire feeding main gear (72).

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