Double-pendulum welding head with rotary wire feeding function

Abstract

The invention relates to the field of welding heads, in particular to a double-pendulum welding head with a rotary wire feeding function. Comprising a first fixing seat, a welding gun, a motor, a second fixing seat, a mounting rod, a mounting seat and a wire feeding pipe, the welding gun is mounted on the first fixing seat, the motor is mounted on one side of the first fixing seat, the synchronous wheel is arranged at the tail of the welding gun, a motor driving shaft is in transmission connection with the synchronous wheel through the transmission belt, the second fixing seat is fixed to one side of the synchronous wheel, and the mounting rod is clamped and fixed to the second fixing seat and located on one side of the welding gun. The wire feeding pipe is located at the bottom end of the mounting rod and fixedly connected with the mounting rod through a mounting base. Due to the fact that the wire feeding pipe is indirectly arranged on the synchronizing wheel, under the influence of rotation of the synchronizing wheel, the wire feeding pipe can rotate around the welding gun till the direction between the welding wire and the end of the welding gun is consistent with the extending direction of the position to be welded, the wire outlet is always located at the front end of the laser port through the structural arrangement, and therefore it is guaranteed that wire discharging is smoother.

Description

Technical Field

[0001] The invention relates to the field of welding heads, in particular to a double-oscillating welding head for rotating wire feeding. Background Art

[0002] With the rapid development of the industrial laser industry, the market has higher and higher requirements for laser processing technology. Laser technology has gradually shifted from a single application to a diversified application. Laser processing is no longer a single cutting or welding. The market has more and more demands for integrated cutting and welding in laser processing. Laser cutting and laser welding integrated laser processing equipment came into being.

[0003] The Chinese patent document "CN221019151U" discloses an intelligent double-swing handheld energy storage welding head, including a cavity seat, a laser emission module, a collimating lens module, an X-axis reflective lens swing module, a Y-axis reflective lens swing module, a focusing lens module, a telescopic adjustment component, and a nozzle. The laser emission module, the collimating lens module, the X-axis reflective lens swing module, the Y-axis reflective lens swing module, the focusing lens module, and the telescopic adjustment component are all fixed on the cavity seat, and the nozzle is connected to the end of the telescopic adjustment component away from the cavity seat, and the laser emission module, the collimating lens module, the X-axis reflective lens swing module, the Y-axis reflective lens swing module, the focusing lens module, the telescopic adjustment component, and the nozzle are connected in series in sequence to form an optical path channel. The telescopic adjustment component can adjust the distance between the focusing lens module and the product. Even if there is an error between the focal length and the preset, the focus can be accurately focused on the product, which is convenient for focusing to obtain the maximum welding energy. However, in reality, the distance between the welding head and the product is mostly set as a standard, and the entire practical process will basically not change, as follows:

[0004] Existing laser welding equipment moves in various directions through a three-coordinate system during welding. This movement method facilitates the calculation of the moving path of the welding head. However, for some weldments with irregular joints, the above-mentioned traditional welding equipment may cause the welding of the weldment to be incomplete or the welding to be not smooth because the welding wire and the welding head always maintain the same direction during welding. Summary of the invention

[0005] Based on this, it is necessary to provide a double-swing welding head with rotary wire feeding to address the above technical problems. The structural setting ensures that the wire outlet is always at the front end of the laser port, thereby ensuring smoother wire output.

[0006] The present invention provides a double-swing welding head with rotary wire feeding, comprising a first fixed seat, a welding gun, a motor, a second fixed seat, a mounting rod, a mounting seat and a wire feeding tube; the welding gun is mounted on the first fixed seat, the motor is mounted on one side of the first fixed seat, a synchronous wheel is arranged at the tail of the welding gun, the motor driving shaft is connected to the synchronous wheel through a transmission belt, the second fixed seat is fixed below one side of the synchronous wheel, the mounting rod is clamped and fixed on the second fixed seat, and the mounting rod is located on one side of the welding gun; the wire feeding tube is located at the bottom end of the mounting rod, and the two are fixedly connected through the mounting seat.

[0007] In one embodiment, the mounting rod includes an upper rod arm and a lower rod arm, a connecting area is provided between the upper rod arm and the lower rod arm, two adjusting heads are provided in the connecting area, the two adjusting heads are respectively rotatably mounted on the upper rod arm and the lower rod arm, and the two adjusting heads are connected by a connecting piece.

[0008] In one embodiment, an installation channel is opened inside the mounting seat, and the wire feeding tube passes through the installation channel. An elastic member is arranged in the installation channel, one end of the elastic member is fixed, and the other end of the elastic member is connected to the wire feeding tube. One end of the elastic member is connected to a wire rope, and one end of the wire rope is passed around one side of the adjusting head and fixed at a preset position.

[0009] In one embodiment, the ends of the upper rod arm and the lower rod arm are respectively provided with a first mounting groove and a second mounting groove, and the two adjusting heads are respectively detachably installed in the first mounting groove and the second mounting groove through two fasteners, one side of the adjusting head is a semicircular structure, and the other side of the adjusting head is a rectangular structure, and the length of the rectangular structure part is equal to the diameter of the semicircular structure part.

[0010] In one embodiment, the surface of the semicircular structure portion of the adjusting head is gap-matched with the bottom surface of the first mounting groove or the second mounting groove. When the adjusting head is rotated by a preset angle, the surface of the semicircular structure portion of the adjusting head is fitted with the bottom surface of the first mounting groove or the second mounting groove, and the fitting surface is a semicircular structure.

[0011] In one embodiment, the connecting member includes two connecting arms and a sleeve; one end of the connecting arm is rotatably connected to the adjusting head through the fastener, a first limit rod is movably inserted on the connecting arm, a limit hole is provided on the adjusting head corresponding to the position of the first limit rod, and the two ends of the sleeve are respectively sleeved on the opposite ends of the two connecting arms.

[0012] In one embodiment, a plurality of the limiting holes are provided, and the plurality of the limiting holes are all located in the rectangular structure portion of the adjusting head, and the plurality of the limiting holes are arranged in a ring array around the central axis of the fastener.

[0013] In one embodiment, a limiting groove is provided on the side of the connecting arm, and the limiting groove is arranged in an annular structure. A second limiting rod is provided at the end of the sleeve, and the second limiting rod is arranged in an annular structure. The second limiting rod is partially movably engaged in the limiting groove. A first spring is also arranged in the sleeve, and the two ends of the first spring are respectively connected to the opposite ends of the two connecting arms.

[0014] In one embodiment, a through opening is opened on the upper side of the mounting seat, and the through opening is connected to the mounting channel. The elastic member includes a limiting ring and a second spring. The limiting ring is fixed in the mounting channel, one end of the second spring is connected to the limiting ring, and the other end of the second spring is clamped and fixed to the wire feeding tube and connected to one end of the wire rope.

[0015] In one embodiment, a wire wheel is installed in the through-hole, and a winding wheel is installed at the end of the mounting seat away from the welding gun. One end of the wire rope is passed around the wire wheel and the semicircular structure part of the adjusting head farthest away in sequence, and is wound around the winding wheel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The double-swing welding head with rotary wire feeding of the present invention, when in use, the three-coordinate mechanism moves the first fixed seat, so that the welding gun performs welding. During the welding process, according to the change in the orientation of the position to be welded on the weldment, the motor will drive the transmission belt to drive the synchronous wheel to rotate. Since the wire feeding tube is indirectly arranged on the synchronous wheel, it is affected by the rotation of the synchronous wheel and the wire feeding tube will rotate 360 ​​degrees around the welding gun until the direction between the welding wire and the end of the welding gun is consistent with the extension direction of the position to be welded. This structural arrangement ensures that the wire outlet is always at the front end of the laser port, thereby ensuring smoother wire outlet.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is one of the three-dimensional structural schematic diagrams of the double pendulum welding joint provided by the present invention;

[0021] Figure 2 The second schematic diagram of the three-dimensional structure of the double pendulum welding joint provided by the present invention;

[0022] Figure 3 A schematic cross-sectional structure diagram of a double pendulum welding joint provided by the present invention;

[0023] Figure 4 One of the partial cross-sectional structural schematic diagrams of the double pendulum welding joint provided by the present invention;

[0024] Figure 5 The second schematic diagram of the partial cross-sectional structure of the double-oscillating welding joint provided by the present invention.

[0025] Reference numerals:

[0026] 110, first fixed seat; 120, welding gun; 130, synchronous wheel; 140, motor; 150, transmission belt; 160, second fixed seat; 170, mounting rod; 171, upper rod arm; 1711, first mounting groove; 172, lower rod arm; 1721, second mounting groove; 173, connecting area; 180, mounting seat; 181, mounting channel; 182, through-hole; 190, wire feeding tube; 200, connecting piece; 210, connecting arm; 211, limiting groove; 220, fastener; 230, first limiting rod; 241, sleeve; 242, second limiting rod; 250, first spring; 300, adjusting head; 310, limiting hole; 400, elastic piece; 410, limiting ring; 420, second spring; 500, wire rope; 610, wire wheel; 620, winding wheel. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0028] Combine the following Figures 1 to 5The invention describes a double-oscillating welding head with rotary wire feeding.

[0029] In one embodiment, a double-swing welding head with rotary wire feeding includes a first fixed seat 110, a welding gun 120, a motor 140, a second fixed seat 160, a mounting rod 170, a mounting seat 180 and a wire feeding tube 190; the welding gun 120 is installed on the first fixed seat 110, the motor 140 is installed on one side of the first fixed seat 110, a synchronous wheel 130 is arranged at the tail of the welding gun 120, the driving shaft of the motor 140 is connected to the synchronous wheel 130 through a transmission belt 150, the second fixed seat 160 is fixed below one side of the synchronous wheel 130, the mounting rod 170 is clamped and fixed on the second fixed seat 160, and the mounting rod 170 is located on one side of the welding gun 120; the wire feeding tube 190 is located at the bottom end of the mounting rod 170, and the two are fixedly connected through the mounting seat 180.

[0030] Specifically, the three-coordinate mechanism is used to move the first fixed seat 110, so that the welding gun 120 performs welding. During the welding process, according to the change in the orientation of the position to be welded on the weldment, the motor 140 will drive the transmission belt 150 to drive the synchronous wheel 130 to rotate. Since the wire feeding tube 190 is indirectly arranged on the synchronous wheel 130, it is affected by the rotation of the synchronous wheel 130 and the wire feeding tube 190 will rotate 360 ​​degrees around the welding gun 120 until the direction between the welding wire and the end of the welding gun 120 is consistent with the extension direction of the welding position to be welded.

[0031] The above-mentioned double-swing welding head with rotating wire feeding, when in use, the three-coordinate mechanism moves the first fixed seat 110, so that the welding gun 120 performs welding. During the welding process, according to the change in the orientation of the position to be welded on the weldment, the motor 140 will drive the transmission belt 150 to drive the synchronous wheel 130 to rotate. Since the wire feeding tube 190 is indirectly arranged on the synchronous wheel 130, it is affected by the rotation of the synchronous wheel 130 and the wire feeding tube 190 will rotate 360 ​​degrees around the welding gun 120 until the direction between the welding wire and the end of the welding gun 120 is consistent with the extension direction of the welding position to be welded. This structural arrangement ensures that the wire outlet is always at the front end of the laser port, thereby ensuring smoother wire outlet.

[0032] In one embodiment, the mounting rod 170 includes an upper arm 171 and a lower arm 172, a connecting area 173 is provided between the upper arm 171 and the lower arm 172, two adjusting heads 300 are provided in the connecting area 173, the two adjusting heads 300 are rotatably mounted on the upper arm 171 and the lower arm 172, respectively, and the two adjusting heads 300 are connected by a connecting member 200.

[0033] Specifically, in actual use, the welding surface of the welded part may be non-planar. Therefore, in order to ensure that the welding wire and the welding port are positioned to stably weld the welding surface of the welded part, in this embodiment, the mounting rod 170 is configured as an upper rod arm 171 and a lower rod arm 172, and the two can rotate at a certain angle. Through the rotation adjustment of multiple joints, the wire feeding tube 190 can feed the welding wire at multiple angles.

[0034] In one embodiment, an installation channel 181 is opened inside the mounting seat 180, and the wire feeding tube 190 passes through the installation channel 181. An elastic member 400 is arranged in the installation channel 181, one end of the elastic member 400 is fixed, and the other end of the elastic member 400 is connected to the wire feeding tube 190. One end of the elastic member 400 is connected to a wire rope 500, and one end of the wire rope 500 is passed around one side of the adjusting head 300 and fixed at a preset position.

[0035] Specifically, the above-mentioned preset position can be any component of the welding head. In the present embodiment, the mounting seat 180 is preferably used. According to the unevenness and inclination of the surface of the welding part, the angle of the wire feeding tube 190 can be adjusted in various ways. Therefore, in order to keep the distance between the welding wire sent out by the wire feeding tube 190 after the angle adjustment and the welding port of the welding gun 120 stable, it is necessary to pull the elastic member 400 through the wire rope 500 to control the distance between the end of the wire feeding tube 190 and the mounting channel 181.

[0036] In one embodiment, a first mounting groove 1711 and a second mounting groove 1721 are respectively provided at the ends of the upper arm 171 and the lower arm 172, and the two adjustment heads 300 are respectively detachably installed in the first mounting groove 1711 and the second mounting groove 1721 through two fasteners 220, one side of the adjustment head 300 is a semicircular structure, and the other side of the adjustment head 300 is a rectangular structure, and the length of the rectangular structure part is equal to the diameter of the semicircular structure part.

[0037] Specifically, the surface of the semicircular structure portion of the adjustment head 300 is gap-matched with the bottom surface of the first installation groove 1711 or the second installation groove 1721. When the adjustment head 300 rotates at a preset angle, the surface of the semicircular structure portion of the adjustment head 300 is affixed with the bottom surface of the first installation groove 1711 or the second installation groove 1721, and the affixed surface is a semicircular structure. The preset angle is no more than 90 degrees.

[0038] In one embodiment, the connecting member 200 includes two connecting arms 210 and a sleeve 241; one end of the connecting arm 210 is rotatably connected to the adjusting head 300 through a fastener 220, a first limiting rod 230 is movably inserted on the connecting arm 210, and a limiting hole 310 is opened on the adjusting head 300 corresponding to the position of the first limiting rod 230, and the two ends of the sleeve 241 are respectively sleeved on the opposite ends of the two connecting arms 210.

[0039] Specifically, a plurality of limiting holes 310 are provided, and the plurality of limiting holes 310 are all located in the rectangular structure portion of the adjusting head 300, and the plurality of limiting holes 310 are arranged in a circular array around the central axis of the fastener 220. By rotating the two adjusting heads 300, the rotation angle of the mounting seat 180 can be flexibly adjusted at multiple angles, thereby achieving stable welding, and the first limiting rod 230 is inserted into the corresponding limiting hole 310, so that the limiting fixation can be adaptively performed.

[0040] Furthermore, a limiting groove 211 is provided on the side of the connecting arm 210, and the limiting groove 211 is arranged in an annular structure. A second limiting rod 242 is provided at the end of the sleeve 241, and the second limiting rod 242 is arranged in an annular structure. The second limiting rod 242 is partially movably connected in the limiting groove 211. A first spring 250 is also provided in the sleeve 241, and both ends of the first spring 250 are respectively connected to the opposite ends of the two connecting arms 210.

[0041] In one embodiment, a through opening 182 is opened on the upper side of the mounting seat 180, and the through opening 182 is connected to the mounting channel 181. The elastic member 400 includes a limiting ring 410 and a second spring 420. The limiting ring 410 is fixed in the mounting channel 181, and one end of the second spring 420 is connected to the limiting ring 410. The other end of the second spring 420 is clamped and fixed to the wire feeding tube 190 and connected to one end of the wire rope 500.

[0042] Specifically, a wire wheel 610 is installed in the through opening 182 , and a winding wheel 620 is installed at the end of the mounting seat 180 away from the welding gun 120 . One end of the wire rope 500 passes around the wire wheel 610 and the semicircular structure part of the farthest adjusting head 300 in turn, and is wound in the winding wheel 620 .

[0043] Working principle:

[0044] When in use, the three-coordinate mechanism moves the first fixed seat 110, so that the welding gun 120 performs welding. During the welding process, according to the change in the orientation of the position to be welded on the weldment, the motor 140 will drive the transmission belt 150 to drive the synchronous wheel 130 to rotate. Since the wire feeding tube 190 is indirectly arranged on the synchronous wheel 130, it is affected by the rotation of the synchronous wheel 130, and the wire feeding tube 190 will rotate 360 ​​degrees around the welding gun 120 until the direction between the welding wire and the end of the welding gun 120 is consistent with the extension direction of the position to be welded. In this process, the upper arm 171 and the lower arm 172 can rotate at a certain angle. Through the rotation adjustment of multiple joints, the wire feeding tube 190 can feed the welding wire at multiple angles, thereby facilitating subsequent welding. In order to keep the distance between the welding wire sent out by the wire feeding tube 190 after the angle adjustment and the welding port of the welding gun 120 stable, it is necessary to pull the elastic member 400 through the wire rope 500, so as to control the distance between the end of the wire feeding tube 190 and the installation channel 181. During the pulling process of the wire rope 500, the surface of the semicircular structure part of the adjustment head 300 is gap-matched with the bottom surface of the first installation groove 1711 or the second installation groove 1721. When the adjustment head 300 rotates to a preset angle, the surface of the semicircular structure part of the adjustment head 300 is fitted with the bottom surface of the first installation groove 1711 or the second installation groove 1721, and the fitting surface is a semicircular structure. At this time, the angle adjustment is completed.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A double-oscillating welding head with rotary wire feeding, characterized in that: The invention comprises a first fixed seat (110), a welding gun (120), a motor (140), a second fixed seat (160), a mounting rod (170), a mounting seat (180) and a wire feeding tube (190); the welding gun (120) is mounted on the first fixed seat (110), the motor (140) is mounted on one side of the first fixed seat (110), a synchronous wheel (130) is arranged at the tail of the welding gun (120), the driving shaft of the motor (140) is connected to the synchronous wheel (130) through a transmission belt (150), the second fixed seat (160) is fixed below one side of the synchronous wheel (130), the mounting rod (170) is clamped and fixed on the second fixed seat (160), and the mounting rod (170) is located on one side of the welding gun (120); the wire feeding tube (190) is located at the bottom end of the mounting rod (170), and the two are fixedly connected through the mounting seat (180).

2. The double-oscillating welding head with rotary wire feeding according to claim 1, characterized in that: The mounting rod (170) comprises an upper rod arm (171) and a lower rod arm (172); a connection area (173) is provided between the upper rod arm (171) and the lower rod arm (172); two adjustment heads (300) are provided in the connection area (173); the two adjustment heads (300) are rotatably mounted on the upper rod arm (171) and the lower rod arm (172), respectively, and the two adjustment heads (300) are connected via a connecting piece (200).

3. The double-oscillating welding head with rotary wire feeding according to claim 2, characterized in that: The mounting seat (180) is provided with a mounting channel (181) inside, the wire feeding tube (190) passes through the mounting channel (181), an elastic member (400) is arranged in the mounting channel (181), one end of the elastic member (400) is fixed, the other end of the elastic member (400) is connected to the wire feeding tube (190), one end of the elastic member (400) is connected to a steel wire rope (500), one end of the steel wire rope (500) is passed around one side of the regulating head (300) and is fixed at a preset position.

4. The double-oscillating welding head with rotary wire feeding according to claim 3 is characterized in that: The ends of the upper rod arm (171) and the lower rod arm (172) are respectively provided with a first mounting groove (1711) and a second mounting groove (1721); the two adjusting heads (300) are respectively detachably mounted in the first mounting groove (1711) and the second mounting groove (1721) via two fasteners (220); one side of the adjusting head (300) is a semicircular structure, and the other side of the adjusting head (300) is a rectangular structure, and the length of the rectangular structure portion is equal to the diameter of the semicircular structure portion.

5. The double-oscillating welding head with rotary wire feeding according to claim 4, characterized in that: The surface of the semicircular structure portion of the adjusting head (300) is clearance-matched with the bottom surface of the first mounting groove (1711) or the second mounting groove (1721); when the adjusting head (300) is rotated by a preset angle, the surface of the semicircular structure portion of the adjusting head (300) is fitted with the bottom surface of the first mounting groove (1711) or the second mounting groove (1721), and the fitting surface is a semicircular structure.

6. The double-oscillating welding head with rotary wire feeding according to claim 5, characterized in that: The connecting member (200) comprises two connecting arms (210) and a sleeve (241); one end of the connecting arm (210) is rotatably connected to the adjusting head (300) via the fastener (220); a first limiting rod (230) is movably inserted into the connecting arm (210); a limiting hole (310) is provided on the adjusting head (300) at a position corresponding to the first limiting rod (230); and two ends of the sleeve (241) are respectively sleeved on opposite ends of the two connecting arms (210).

7. The double-oscillating welding head with rotary wire feeding according to claim 6, characterized in that: A plurality of the limiting holes (310) are provided, and the plurality of limiting holes (310) are all located in the rectangular structure portion of the adjusting head (300), and the plurality of limiting holes (310) are arranged in a ring array around the central axis of the fastener (220).

8. The double-oscillating welding head with rotary wire feeding according to claim 7, characterized in that: The side surfaces of the connecting arms (210) are provided with limiting grooves (211), the limiting grooves (211) are arranged in an annular structure, the end of the sleeve (241) is provided with a second limiting rod (242), the second limiting rod (242) is arranged in an annular structure, the second limiting rod (242) is partially movably engaged in the limiting groove (211), and a first spring (250) is further arranged in the sleeve (241), the two ends of the first spring (250) are respectively connected to the opposite ends of the two connecting arms (210).

9. The double-oscillating welding head with rotary wire feeding according to claim 8, characterized in that: A through hole (182) is provided on the upper side of the mounting seat (180), and the through hole (182) is communicated with the mounting channel (181). The elastic member (400) includes a limiting ring (410) and a second spring (420). The limiting ring (410) is fixed in the mounting channel (181), one end of the second spring (420) is connected to the limiting ring (410), and the other end of the second spring (420) is fixedly engaged with the wire feeding tube (190) and connected to one end of the wire rope (500).

10. The double-oscillating welding head with rotary wire feeding according to claim 9, characterized in that: A guide wheel (610) is installed in the through opening (182), and a winding wheel (620) is installed at one end of the mounting seat (180) away from the welding gun (120). One end of the wire rope (500) sequentially passes around the guide wheel (610) and the semicircular structure part of the farthest regulating head (300), and is wound inside the winding wheel (620).

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