Push-pull wire feeding mechanism for laser welding

Abstract

The utility model discloses a laser welding push-pull wire feeding mechanism which comprises a bottom plate and a welding wire, the bottom plate is vertically unfolded in the transverse direction, a wire guiding assembly used for guiding the welding wire to be conveyed outwards is fixed to the upper position and the lower position of the front face of the bottom plate in an extending mode, and a driving assembly and a wire feeding assembly are installed on the two sides of the front face of the bottom plate respectively. The laser welding gun head has the advantages that the wire guide assembly is installed on the front portion of the bottom plate, the wire guide assembly comprises the upper wire guide sleeve and the lower wire guide sleeve at the upper position and the lower position respectively, and the outer end of the wire feeding hose at the bottom of the lower wire guide sleeve extends to the welding flux supply position of the laser welding gun head. In this way, the welding wire enters from the top end of the upper wire guide sleeve, is fed into the wire feeding hose from the lower wire guide sleeve and then extends to the laser welding gun head, so that the welding wire feeding process can be guided, and the situation that the welding wire deviates is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser welding auxiliary assembly field, concretely relates to a laser welding push-pull wire feeding mechanism. BACKGROUND

[0002] With the continuous development of industrial industry, laser welding robot has been widely used, and the laser welding robot uses a semiconductor laser as a welding heat source, and the principle is that the laser beam is focused on the weld by driving the laser welding gun head by a mechanical arm, the workpiece surface is heated to melt, and the metal is connected, and the laser welding is usually divided into two kinds of wire welding and wireless welding.

[0003] In the prior art, for the welding robot that works by wire welding, the pushing and pulling of the welding wire are completed by the laser welding gun head when the welding wire is supplied and delivered during the welding process, and since the welding material roller for supplying the welding wire has a long distance from the laser welding mechanism, the wire feeding and pulling length cannot be controlled by only using the laser welding gun head to push and pull the wire, and the wire is prone to deviation. UTILITY MODEL CONTENT

[0004] The utility model discloses a laser welding push-pull wire feeding mechanism, which is installed at the front of the bottom plate and includes an upper wire guide sleeve and a lower wire guide sleeve at the upper and lower positions of the wire guide assembly, and the outer end of the wire feeding hose at the top of the upper wire guide sleeve extends to the welding material supply position of the laser welding gun head.

[0005] To achieve the above object, the utility model provides the following technical scheme.

[0006] The utility model provides a laser welding push-pull wire feeding mechanism, which includes a bottom plate and a welding wire, the bottom plate is arranged vertically along the transverse direction, and a wire guide assembly is fixed at the upper and lower positions of the front of the bottom plate to guide the outward delivery of the welding wire.

[0007] The driving assembly and the wire feeding assembly are installed at the two sides of the front of the bottom plate, respectively, to actively push the welding wire and actively pull the welding wire by driving the wire feeding assembly through the driving assembly.

[0008] As preferred, the wire feeding assembly comprises an upper wing plate and a lower wing plate, the upper wing plate and the lower wing plate are respectively fixed on the upper and lower positions of the front face of the bottom plate, the same side end portions of the upper wing plate and the lower wing plate are respectively vertically inserted and fixed with an upper wire sleeve and a lower wire sleeve, the upper wire sleeve and the lower wire sleeve are vertically coaxial, the bottom end of the lower wire sleeve is coaxially connected with a wire feeding hose which extends to the solder feeding position of the laser welding gun head, and the welding wire enters the wire feeding hose from the top end of the upper wire sleeve and is fed into the wire feeding hose from the lower wire sleeve.

[0009] As preferred, the driving assembly comprises a driving motor, a driving pulley and a driven pulley, the driving motor is fixedly installed on one side of the back face of the bottom plate, the driving shaft of the front part of the driving motor passes through the bottom plate in a longitudinal sliding fit manner and the front end is coaxially fixed with the driving pulley, the driving pulley and the wire feeding assembly are connected with a longitudinal driven shaft which is rotatably connected on the front face of the bottom plate between the driving pulley and the wire feeding assembly, and the outer periphery of the driven shaft is coaxially fixed with the driven pulley, and the transmission belt is wound between the outer periphery of the driven pulley and the driving pulley to realize transmission.

[0010] As preferred, the driving pulley and the driven pulley are both toothed pulleys, and the transmission belt is a toothed belt.

[0011] As preferred, the wire feeding assembly comprises a driving wire feeding roller and a driven wire feeding roller, the inner periphery of the driving wire feeding roller is coaxially fixed with a slewing bearing, the inner ring of the slewing bearing is coaxially fixed on the outer periphery of the driven shaft to drive the driving wire feeding roller to rotate together through the rotation of the driven pulley, the side bottom of the bottom plate away from the driving motor is fixed with a support shaft along the longitudinal direction, the outer periphery of the support shaft is rotatably connected with an arm, the top of the arm is fixedly connected with a wheel frame, the wheel frame is a shell structure and the side and top thereof close to the driving wire feeding roller are open, the driven wire feeding roller is rotatably connected between the front and rear positions of the wheel frame through a wheel shaft, and the welding wire passes between the driving wire feeding roller and the driven wire feeding roller and is clamped by the driving wire feeding roller and the driven wire feeding roller.

[0012] As preferred, the outer periphery of the part of the upper wire sleeve which extends out of the bottom face of the upper wing plate is coaxially fixed with a fixing sleeve, the outer periphery of the fixing sleeve is fixedly connected with a screw rod which extends outward along the transverse direction, the side top of the wheel frame away from the driven wire feeding roller is provided with a matching slot along the transverse direction, the screw rod passes through the matching slot in a clearance fit manner, the part of the screw rod which extends out of the matching slot is coaxially engaged with a compression nut handle, and the compression nut handle is compressed on the side surface of the wheel frame.

[0013] Preferably, the outer surfaces of the driving wire feeding roller and the driven wire feeding roller are provided with concave-convex staggered anti-skid patterns, and a protective cover plate is fixed between the front ends of the upper wing plate and the lower wing plate to shield and protect.

[0014] Preferably, the front end of the matching groove is open and has a vertical width greater than the diameter of the screw rod, the pressing nut handle is a handle-shaped nut sleeve, and the inner threaded portion of the pressing nut handle is not less than the axial length of the screw rod.

[0015] In the laser welding push-pull wire feeding mechanism, the front part of the bottom plate is provided with the wire guide assembly, which includes the upper wire guide sleeve and the lower wire guide sleeve, and the outer end of the wire feeding hose at the bottom of the lower wire guide sleeve extends to the welding material supply position of the laser welding gun head. In this way, the welding wire is guided from the top end of the upper wire guide sleeve to the wire feeding hose and then to the laser welding gun head, avoiding deviation of the welding wire. The driving assembly and the wire feeding assembly are respectively installed on the two sides of the bottom plate, and the welding wire passes between the driving wire feeding roller and the driven wire feeding roller of the wire feeding assembly and is clamped and pressed by the driving wire feeding roller and the driven wire feeding roller. In this way, the driving wire feeding roller of the wire feeding assembly is driven to rotate by the driven pulley of the driving assembly, and the welding wire is actively pushed and actively pulled by the rotation of the driving wire feeding roller and the cooperation of the driven wire feeding roller. This ensures stable welding wire supply during laser welding and controls the length of the welding wire. The wheel frame and the rotating arm are deflected by a certain angle by rotating the pressing nut handle along the screw rod, and the tightness of the welding wire is adjusted by deflecting the driven wire feeding roller by a certain angle. This ensures stable welding wire feeding operation by the rotation of the driving wire feeding roller and the adaptability of the driving wire feeding roller and the driven wire feeding roller to different diameter specifications of the welding wire, improving the usability of the wire feeding assembly.

[0016] The beneficial effects are: 1, the utility model discloses a front part installation of bottom plate is provided with the guide wire assembly, and the guide wire assembly includes the upper guide wire sleeve and the lower guide wire sleeve of the upper and lower position respectively, and the outer end of the wire feeding hose of the lower guide wire sleeve bottom extends to the solder supply position of the laser welding gun head, so that the welding wire is guided and oriented in the welding wire feeding process by the welding wire entering from the top end of the upper guide wire sleeve and extending to the laser welding gun head from the wire feeding hose after being fed into the wire feeding hose from the lower guide wire sleeve, avoiding the deviation of the welding wire;

[0017] 2, the both sides of bottom plate are provided with drive assembly and wire feeding assembly respectively, and the welding wire is clamped and compressed between the driving wire feeding roller and the driven wire feeding roller of the wire feeding assembly, so that the driving wire feeding roller of the wire feeding assembly can be driven to rotate by the driven pulley of the drive assembly, and then the active pushing type wire feeding and the active pulling type wire extraction of the welding wire can be realized by the rotation of the driving wire feeding roller and the cooperation of the driven wire feeding roller, which ensures the stability of the welding wire supply during the laser welding process and controls the wire feeding and extraction length of the welding wire;

[0018] 3, the wheel frame and the rotating arm can be deflected by a certain angle around the support shaft by rotating the compression nut handle to move along the screw shaft, so that the tension of the welding wire when clamped can be adjusted by the wheel frame driving the driven wire feeding roller to deflect by a certain angle, which ensures that the welding wire can be pushed and pulled for feeding by the rotation of the driving wire feeding roller, and the driving wire feeding roller and the driven wire feeding roller can adapt to the pushing of welding wires of different diameters, improving the use applicability of the wire feeding assembly. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor.

[0020] Figure 1 is the overall isometric view of the present application Figure 1 ;

[0021] Figure 2 is the overall isometric view of the present application Figure 2 ;

[0022] Figure 3 is the front view of the present application Figure 1 .

[0023] The reference signs are explained as follows:

[0024] 1, guide wire assembly; 101, upper guide wire sleeve; 102, upper wing plate; 103, lower wing plate; 104, lower guide wire sleeve; 2, drive assembly; 201, drive motor; 202, driving pulley; 203, driven pulley; 204, drive shaft; 205, transmission belt; 206, driven rotating shaft; 3, wire feeding assembly; 301, matching groove; 302, screw rod; 303, compression nut handle; 304, fixed sleeve; 305, wheel frame; 306, driven wire feeding roller; 307, wheel shaft; 308, driving wire feeding roller; 309, support shaft; 3010, rotating arm; 3011, rotary bearing; 4, welding wire; 5, protective cover plate; 6, bottom plate; 7, wire feeding hose. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0026] Referring to Figures 1-3 The present application provides a laser welding push-pull wire feeding mechanism, which comprises a bottom plate 6 and a welding wire 4. The bottom plate 6 is arranged vertically along the transverse direction. A guide wire assembly 1 is arranged at the upper and lower positions of the front of the bottom plate 6 to guide the outward conveying of the welding wire 4. Specifically, the guide wire assembly 1 comprises an upper wing plate 102 and a lower wing plate 103. The upper wing plate 102 and the lower wing plate 103 are respectively arranged horizontally at the upper and lower positions of the front of the bottom plate 6. The same side end portions of the upper wing plate 102 and the lower wing plate 103 are respectively vertically inserted and fixed with an upper guide wire sleeve 101 and a lower guide wire sleeve 104. The upper guide wire sleeve 101 and the lower guide wire sleeve 104 are vertically coaxial. The bottom end of the lower guide wire sleeve 104 is coaxially connected with a wire feeding hose 7, which extends outward to a solder supply position of a laser welding gun head. The welding wire 4 enters the wire feeding hose 7 from the top end of the upper guide wire sleeve 101 and is sent into the wire feeding hose 7 from the lower guide wire sleeve 104. The purpose of this arrangement is to guide the wire feeding process of the welding wire 4 by extending the welding wire 4 from the bottom end of the lower guide wire sleeve 104 to the wire feeding hose 7 and then to the laser welding gun head.

[0027] Referring to Figure 1As shown, the two sides of the front of the bottom plate 6 are respectively provided with a driving assembly 2 and a wire feeding assembly 3, which are used to drive the wire feeding assembly 3 to realize the active pushing type wire feeding and the active pulling type wire drawing of the welding wire 4, specifically, the driving assembly 2 includes a driving motor 201, a driving pulley 202 and a driven pulley 203, the back side of the bottom plate 6 is fixedly installed with the driving motor 201, the driving shaft 204 of the front part of the driving motor 201 penetrates through the bottom plate 6 in a longitudinal sliding fit manner and the front end is coaxially fixed with the driving pulley 202, the longitudinal driven shaft 206 is rotationally connected between the driving pulley 202 and the wire feeding assembly 3 at the front of the bottom plate 6, and the outer periphery of the driven shaft 206 is coaxially fixed with the driven pulley 203, and the transmission belt 205 for transmission is wound between the outer periphery of the driven pulley 203 and the driving pulley 202, the wire feeding assembly 3 includes a driving wire feeding roller 308 and a driven wire feeding roller 306, the inner periphery of the driving wire feeding roller 308 is coaxially fixed with the slewing bearing 3011, and the inner ring of the slewing bearing 3011 is coaxially fixed on the outer periphery of the driven shaft 206, so as to drive the driving wire feeding roller 308 to rotate together through the rotation of the driven pulley 203, the outer periphery of the support shaft 309 is fixedly arranged on the side bottom of the bottom plate 6 away from the driving motor 201 along the longitudinal direction, the outer periphery of the support shaft 309 is rotationally connected with the rotating arm 3010, and the top of the rotating arm 3010 is fixedly connected with the wheel frame 305, the wheel frame 305 is a shell structure and the side and top close to the driving wire feeding roller 308 are open, the front and rear positions of the wheel frame 305 are rotationally connected with the driven wire feeding roller 306 through the wheel shaft 307, and the welding wire 4 passes between the driving wire feeding roller 308 and the driven wire feeding roller 306 and is clamped by the driving wire feeding roller 308 and the driven wire feeding roller 306, so that the driving assembly 2 can drive the driving wire feeding roller 308 of the wire feeding assembly 3 to rotate through the rotation of the driven pulley 203, and then the active pushing type wire feeding and the active pulling type wire drawing of the welding wire 4 can be realized through the rotation of the driving wire feeding roller 308 and the driven wire feeding roller 306.

[0028] Referring to Figures 1-3As shown, the driving assembly 2 and the wire feeding assembly 3 are optimized as follows, and specifically to the driving assembly 2, the driving pulley 202 and the driven pulley 203 are toothed pulleys, and the transmission belt 205 is a toothed belt, so that the driving pulley 202 has good and stable transmission capacity when driving the driven pulley 203 to rotate, and the situation of slipping is avoided. And specifically to the wire guide assembly 1, first of all, the outer periphery of the part of the upper wire guide sleeve 101 extending out of the bottom surface of the upper wing plate 102 is coaxially fixed with a fixed sleeve 304, and the outer periphery of the fixed sleeve 304 is fixedly connected with a screw rod 302 extending outward in the transverse direction, and the top of the side of the wheel carrier 305 away from the driven wire feeding roller 306 is provided with a matching groove 301 in the transverse direction, and the screw rod 302 passes through the matching groove 301 in a clearance fit manner, and the part of the screw rod 302 extending out of the matching groove 301 is coaxially engaged with a compression nut handle 303, and the compression nut handle 303 is compressed on the side surface of the wheel carrier 305. By this arrangement, the wheel carrier 305 and the rotating arm 3010 can be driven to deflect by a certain angle around the support shaft 309 by rotating the compression nut handle 303 to move axially along the screw rod 302, so that the driven wire feeding roller 306 can be deflected by a certain angle by the wheel carrier 305, thereby adjusting the tightness of the welding wire 4 when clamped.

[0029] Meanwhile, the outer peripheral surfaces of the driving wire feeding roller 308 and the driven wire feeding roller 306 are uniformly provided with concave-convex staggered anti-slip patterns, and the front ends of the upper wing plate 102 and the lower wing plate 103 are closed and fixed with a protective cover plate 5 for shielding and protection. First of all, the driving wire feeding roller 308 and the driven wire feeding roller 306 have certain anti-slip ability during the pushing and pulling of the welding wire 4, ensuring that the driving wire feeding roller 308 and the driven wire feeding roller 306 can more stably push and pull the welding wire 4, and at the same time, the driving assembly 2 and the wire feeding assembly 3 can be shielded and protected by the protective cover plate 5. Further, the front end of the matching groove 301 is open and the vertical width dimension is greater than the diameter of the screw rod 302, the compression nut handle 303 is a handle-shaped nut sleeve, and the inner thread part of the compression nut handle 303 is not less than the axial length of the screw rod 302. By this arrangement, first of all, the matching groove 301 has a design shape that meets the use requirements, so that the wheel carrier 305 can be tightened and locked by the compression nut handle 303 after being deflected by a certain angle, and at the same time, the compression nut handle 303 can be directly tightened and loosened by hand.

[0030] With the above structure, specifically to the push-pull wire feeding of the welding wire 4 in the laser welding, since the wire guide assembly 1 is installed at the front of the base plate 6, and the wire guide assembly 1 includes the upper wire guide sleeve 101 and the lower wire guide sleeve 104 at the upper and lower positions respectively, and the outer end of the wire feeding hose 7 at the bottom of the lower wire guide sleeve 104 extends to the welding material supply position of the laser welding gun head, so that the welding wire 4 is guided and oriented by entering from the top end of the upper wire guide sleeve 101 and being fed into the wire feeding hose 7 from the lower wire guide sleeve 104 and then extending to the laser welding gun head, avoiding the deviation of the welding wire 4. Since the driving assembly 2 and the wire feeding assembly 3 are installed at the two sides of the base plate 6 respectively, and the welding wire 4 passes between the driving wire feeding roller 308 and the driven wire feeding roller 306 of the wire feeding assembly 3 and is clamped and compressed by the driving wire feeding roller 308 and the driven wire feeding roller 306, so that the driving wire feeding roller 308 is driven to rotate by the driven pulley 203 of the driving assembly 2, and then the driving wire feeding roller 308 is rotated and the driven wire feeding roller 306 is cooperated to realize the active pushing wire feeding and the active pulling wire feeding of the welding wire 4, which ensures the stable supply of the welding wire 4 during the laser welding and controls the wire feeding and pulling length of the welding wire 4. Since the wheel frame 305 and the rotating arm 3010 are deflected by a certain angle around the support shaft 309 by rotating the compression nut handle 303 along the screw shaft 302, the driven wire feeding roller 306 is deflected by a certain angle by the wheel frame 305, so that the tension of the welding wire 4 is adjusted when clamped, which ensures the stable push-pull wire feeding of the welding wire 4 by the rotation of the driving wire feeding roller 308, and also ensures that the driving wire feeding roller 308 and the driven wire feeding roller 306 can adapt to the push of welding wires 4 of different diameters, improving the applicability of the wire feeding assembly 3.

[0031] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A laser welding push-pull wire feed mechanism comprising a base plate (6) and a welding wire (4), characterized in that: The bottom plate (6) is arranged vertically along the transverse direction, and a wire guide assembly (1) for guiding the welding wire (4) to be conveyed outward is fixed at the upper and lower positions in front of the bottom plate (6); The driving assembly (2) and the wire feeding assembly (3) are respectively arranged at the two sides in front of the bottom plate (6), so that the driving assembly (2) drives the wire feeding assembly (3) to actively push and feed the welding wire (4).

2. The laser welding push-pull wire feed mechanism of claim 1, wherein: The wire guide assembly (1) comprises an upper wing plate (102) and a lower wing plate (103), the upper wing plate (102) and the lower wing plate (103) are respectively fixed horizontally at the upper and lower positions in front of the bottom plate (6), the same side end portions of the upper wing plate (102) and the lower wing plate (103) are respectively vertically inserted and fixed with an upper wire guide sleeve (101) and a lower wire guide sleeve (104), the upper wire guide sleeve (101) and the lower wire guide sleeve (104) are vertically coaxial, the bottom end of the lower wire guide sleeve (104) is coaxially connected with a wire feeding hose (7) extending outward to a welding material supply position of a laser welding gun head, and the welding wire (4) enters from the top end of the upper wire guide sleeve (101) and is fed into the wire feeding hose (7) from the lower wire guide sleeve (104).

3. The laser welding push-pull wire feed mechanism of claim 2, wherein: The driving assembly (2) comprises a driving motor (201), a driving pulley (202) and a driven pulley (203), the driving motor (201) is fixedly arranged at one side of the back of the bottom plate (6), a driving shaft (204) at the front of the driving motor (201) penetrates through the bottom plate (6) in a longitudinal sliding fit manner and is coaxially fixed with the driving pulley (202) at the front end, a driven rotating shaft (206) along the longitudinal direction is rotationally connected at a position between the driving pulley (202) and the wire feeding assembly (3) in front of the bottom plate (6), the driven rotating shaft (206) is coaxially fixed with the driven pulley (203) at the outside, and a transmission belt (205) for transmission is wound between the peripheries of the driven pulley (203) and the driving pulley (202).

4. The laser welding push-pull wire feed mechanism of claim 3, wherein: The driving pulley (202) and the driven pulley (203) are both toothed pulleys, and the transmission belt (205) is a toothed belt.

5. The laser welding push-pull wire feed mechanism of claim 3 or 4, wherein: The wire feeding assembly (3) comprises a driving wire feeding roller (308) and a driven wire feeding roller (306), the inner periphery of the driving wire feeding roller (308) is fixed with a rotary bearing (3011) coaxially, and the inner ring of the rotary bearing (3011) is fixed on the outer periphery of the driven shaft (206) coaxially, so as to drive the driving wire feeding roller (308) to rotate together in a way of rotating with the driven pulley (203), the bottom plate (6) is fixed with a support shaft (309) longitudinally on the side of the bottom away from the driving motor (201), the outer part of the support shaft (309) is rotatably connected with an arm (3010), and the top of the arm (3010) is fixedly connected with a wheel carrier (305), the wheel carrier (305) is a shell structure and is open on the side and top close to the driving wire feeding roller (308), the driven wire feeding roller (306) is rotatably connected between the front and rear positions of the wheel carrier (305) through an axle (307), and the welding wire (4) passes between the driving wire feeding roller (308) and the driven wire feeding roller (306) and is clamped by the driving wire feeding roller (308) and the driven wire feeding roller (306).

6. The laser welding push-pull wire feed mechanism of claim 5, wherein: The part of the upper wire guide sleeve (101) extending out of the bottom surface of the upper wing plate (102) is fixed with a fixed sleeve (304) coaxially, and the outer periphery of the fixed sleeve (304) is fixedly connected with a screw rod (302) extending outward in the transverse direction, the side and top of the wheel carrier (305) away from the driven wire feeding roller (306) are provided with a matching groove (301) in the transverse direction, the screw rod (302) passes through the matching groove (301) in a gap matching manner, the part of the screw rod (302) extending out of the matching groove (301) is engaged with a compression nut handle (303) coaxially, and the compression nut handle (303) is compressed on the side surface of the wheel carrier (305).

7. The laser welding push-pull wire feed mechanism of claim 6, wherein: The outer peripheral surfaces of the driving wire feeding roller (308) and the driven wire feeding roller (306) are uniformly provided with concave-convex staggered anti-skid lines, and the front ends of the upper wing plate (102) and the lower wing plate (103) are fixedly connected with a protective cover plate (5) for shielding and protection.

8. The laser welding push-pull wire feed mechanism of claim 6 or 7, wherein: The front end of the matching groove (301) is open and the vertical width dimension is greater than the diameter of the screw rod (302), the compression nut handle (303) is a handle type nut sleeve, and the inner threaded part of the compression nut handle (303) is not less than the axial length of the screw rod (302).

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