Laser welding wire feeding mechanism with structure stability adjusting function

Abstract

The utility model discloses a laser welding wire feeding mechanism capable of adjusting structural stability, belongs to the technical field of rescue equipment, and aims to solve the problem that the position of an extrusion device of an existing wire feeding mechanism needs to be manually adjusted. Comprising a shell, a guide hopper is arranged on the left side wall of the shell, a conveying pipe is arranged on the right side wall of the shell, the guide hopper and the conveying pipe are coaxial, two connecting shafts are arranged between the guide hopper and the conveying pipe, the two ends of each connecting shaft are rotationally matched with the front side wall and the rear side wall of the shell respectively, the middle of each connecting shaft is sleeved with a wire feeding wheel, and the upper side of the periphery of each wire feeding wheel abuts against a welding wire. The extrusion plate is connected with the top wall of the shell through a plurality of reset springs, the two rotating shafts are rotationally matched with the extrusion plate correspondingly, the middles of the rotating shafts are sleeved with extrusion wheels, the two extrusion wheels correspondingly press a welding wire on the two wire feeding wheels, any connecting shaft is driven by a motor to rotate, and the extrusion wheels can be tightly attached to the welding wire all the time under the elastic action of the reset springs. And deviation of the welding wires in the conveying process is avoided, and the conveying stability of the welding wires is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to laser welding technical field especially relates to a laser welding wire feeding mechanism with adjusting structure stability. BACKGROUND

[0002] Laser welding is a kind of method that the heat generated by the focused laser beam is used to strike welding piece, because laser has refraction, focusing and other optical properties, so laser welding is very suitable for the welding of micro parts and poor accessibility parts, as a kind of efficient and high-quality welding method, laser welding is widely used in various industrial manufacturing fields, in the process of laser welding, wire feeding mechanism has important influence on welding quality and efficiency, whether wire feeding mechanism can stably run determines the welding quality in the process of laser welding, and the wire feeding mechanism for laser welding still has many defects in actual use, for example, before welding, the position of the extrusion device in the fixed state needs to be adjusted manually, and it is time-consuming to adjust according to different sizes of welding wire, and since the wire feeding size of the wire feeding mechanism is single, the wire feeding mechanism is unstable during replacement, which can affect the welding efficiency and welding quality, so a wire feeding mechanism for laser welding with adjusting structure stability needs to be designed. SUMMARY

[0003] The utility model aims at providing a laser welding wire feeding mechanism with adjusting structure stability to solve the problem that the position of the extrusion device needs to be adjusted manually in the prior art.

[0004] A laser welding wire feeding mechanism with adjusting structure stability, comprising a shell, a wire feeding wheel and an extrusion wheel, a guide hopper is arranged on the left side wall of the shell, a conveying pipe is arranged on the right side wall of the shell, the guide hopper and the conveying pipe are coaxial, the welding wire passes through the guide hopper and then passes out of the conveying pipe, two connecting shafts are arranged between the guide hopper and the conveying pipe, the two ends of the connecting shaft are rotatably connected with the front and rear side walls of the shell, a wire feeding wheel is sleeved on the middle part of the connecting shaft, the outer periphery of the wire feeding wheel is in contact with the welding wire, an extrusion plate is connected with the top wall of the shell through a plurality of return springs, two rotating shafts are rotatably connected with the extrusion plate, an extrusion wheel is sleeved on the middle part of the rotating shaft, a connecting plate is arranged at the two ends of the rotating shaft, a sliding block is fixedly installed on the connecting plate, two sliding grooves are vertically arranged on the front and rear side walls of the shell, the four sliding blocks are slidably connected with the four sliding grooves, the two extrusion wheels press the welding wire on the two wire feeding wheels, a wire feeding motor is arranged on the rear side wall of the shell, a power gear is arranged on the output shaft of the wire feeding motor, a driven gear is arranged at the rear end of any connecting shaft, and the power gear is engaged with the driven gear.

[0005] Further, the conveying pipe is connected with the shell through a pipe clamp.

[0006] Further, the outer periphery of the wire feeding wheel is provided with a limiting groove, and the outer periphery of the extrusion wheel is provided with an extrusion protrusion matched with the limiting groove.

[0007] Further, the rotating shaft is rotationally matched with the extrusion plate through a rotating bearing.

[0008] Further, the wire feeding motor is located outside the shell, and the outer cover of the wire feeding motor is provided with a protective shell connected with the shell.

[0009] Further, the protective shell is provided with a mounting lug connected with the shell through a fastening bolt.

[0010] Further, a connecting groove is vertically formed on one side wall of the protective shell, and a connecting block is slidably arranged on the connecting groove, the wire feeding motor is connected with the connecting block, an electric motor is fixedly connected on the protective shell, a threaded rod is rotationally arranged on the protective shell, an output shaft of the electric motor is connected with the lower end of the threaded rod, and the threaded rod is threadedly matched with the connecting block.

[0011] Compared with the prior art, the present application has the following advantages:

[0012] 1. The shell is fixed at a proper position, the welding wire used in welding is passed through the inside of the shell through the conveying pipe and the guide hopper, the wire feeding motor is started, one of the wire feeding wheels is driven to rotate by the wire feeding motor, the extrusion wheel is synchronously and reversely rotated, then the welding wire is conveyed by the friction force of the wire feeding wheel and the extrusion wheel, the elastic force of the reset spring can always make the extrusion wheel tightly contact with the welding wire, the conveying pipe can stably convey the welding wire horizontally, the phenomenon of direction deviation of the welding wire in the conveying process is avoided, the stability of the welding wire in the conveying process is improved, and the welding quality is improved.

[0013] 2. When the wire feeding mechanism is overhauled, the electric motor is started to drive the threaded rod to rotate, the rotation of the threaded rod drives the connecting block to slide in the connecting groove, then the wire feeding motor moves upward, the movement of the wire feeding motor drives the driven gear to quickly separate from the power gear, the equipment can be prevented from being started under misoperation, and the wire feeding wheel can be prevented from rotating. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a front view of the present application;

[0015] Figure 2 is a left view of the present application;

[0016] Figure 3 is a left sectional view of the present application;

[0017] Figure 4 is Figure 3 is an enlarged view at A in the middle;

[0018] Figure 5 is a structural schematic view of the wire feeding wheel;

[0019] Figure 6 is a structural schematic view of the extrusion wheel and the return spring part.

[0020] In the figure, 1. housing, 11. guide hopper, 12. conveying pipe, 13. pipe clamp, 14. sliding groove, 2. wire feeding wheel, 21. limiting groove, 22. connecting shaft, 23. driven gear, 3. wire feeding motor, 31. power gear, 32. protective shell, 33. mounting plate, 34. fastening bolt, 4. extrusion wheel, 41. extrusion protrusion, 42. rotating shaft, 43. connecting plate, 44. sliding block, 5. return spring, 51. extrusion plate, 52. rotary bearing, 6. connecting groove, 7. connecting block, 8. motor, 9. threaded rod. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear and understandable, the following will describe the present application through specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0022] The connection mentioned in the present application is divided into fixed connection and detachable connection. The fixed connection, i.e. the non-detachable connection, includes but is not limited to conventional fixed connection modes such as flange connection, rivet connection, adhesive connection and welding connection. The detachable connection includes but is not limited to conventional detachable modes such as bolt connection, buckle connection, pin connection and hinge connection. When the specific connection mode is not specifically limited, at least one connection mode can be found in the existing connection mode to realize the function, and the person skilled in the art can select as needed. For example, the fixed connection selects welding connection, and the detachable connection selects bolt connection.

[0023] The present application will be further described in detail below with reference to the drawings. The following embodiments are an explanation of the present application, and the present application is not limited to the following embodiments.

[0024] Embodiment: as Figures 1-6As shown, a kind of laser welding wire feeding mechanism with adjusting structural stability, including shell 1, wire feeding wheel 2 and extrusion wheel 4, the left side wall of shell 1 is equipped with guide hopper 11, the right side wall of shell 1 is equipped with delivery pipe 12, guide hopper 11 and delivery pipe 12 are coaxial, welding wire is passed into by guide hopper 11, and passes out from delivery pipe 12, two connecting shafts 22 are equipped between guide hopper 11 and delivery pipe 12, the two ends of connecting shaft 22 are respectively with the front and rear side wall of shell 1 rotationally cooperated, the middle part of connecting shaft 22 is sleeved with wire feeding wheel 2, the outer periphery of wire feeding wheel 2 is in contact with welding wire, extrusion plate 51 is connected with the top wall of shell 1 by several reset springs 5, two rotating shafts 42 are respectively rotationally cooperated with extrusion plate 51, the middle part of rotating shaft 42 is sleeved with extrusion wheel 4, the two ends of rotating shaft 42 are respectively equipped with connecting plate 43, connecting plate 43 is fixedly installed with sliding block 44, the front and rear side walls of shell 1 are respectively vertically provided with two sliding grooves 14, four sliding blocks 44 are slidably matched with four sliding grooves 14 one by one, two extrusion wheels 4 correspondingly press welding wire on two wire feeding wheels 2, the rear side wall of shell 1 is equipped with wire feeding motor 3, the output shaft of wire feeding motor 3 is equipped with power gear 31, the rear end of any connecting shaft 22 is equipped with driven gear 23, power gear 31 is engaged with driven gear 23.

[0025] By fixing shell 1 in suitable position, welding wire used in welding is passed through delivery pipe 12 and guide hopper 11 through the inside of shell 1, wire feeding motor 3 is started, one of wire feeding wheel 2 can be driven to rotate by wire feeding motor 3, and extrusion wheel 4 is synchronously reversely rotated, then welding wire can be conveyed by the friction force of wire feeding wheel 2 and extrusion wheel 4, the elastic force of reset spring 5 can always make extrusion wheel 4 tightly adhere to welding wire, and welding wire can be horizontally and stably conveyed by cooperating with delivery pipe 12, the phenomenon of direction deviation of welding wire in conveying process can be avoided, the stability of welding wire in conveying process is improved, and welding quality is improved.Guide hopper 11 can conveniently convey welding wire to the inside of shell 1, sliding block 44 can be fixed outside rotating shaft 42 by connecting plate 43, at the same time, extrusion wheel 4 can be fixed in the inside of shell 1, and the rotation of extrusion wheel 4 is not affected, extrusion wheel 4 can slide in the inside of shell 1 by sliding block 44, and the deviation of extrusion wheel 4 in sliding process can be avoided.

[0026] Delivery pipe 12 is connected with shell 1 by pipe clamp 13.Delivery pipe 12 can be fixed in the inside of shell 1 by pipe clamp 13, and falling off is avoided.

[0027] The outer periphery of the wire feeding wheel 2 is provided with a limiting groove 21, and the outer periphery of the extrusion wheel 4 is provided with an extrusion protrusion 41 matched with the limiting groove 21. The limiting groove 21 can make the welding wire slide to the central position of the wire feeding wheel 3. The return spring 5 always pushes the extrusion wheel 4 to the welding wire direction, so that the extrusion protrusion 41 extrudes the welding wire. The offset of the welding wire during the conveying process can be avoided. The limiting groove can limit the welding wires with different diameters, improve the adaptation range of the wire feeding wheel 2 to the welding wire, reduce the replacement frequency of the wire feeding wheel 2, avoid the frequent occurrence of unstable phenomenon after the replacement of the wire feeding wheel 2, and improve the welding efficiency of the laser welding.

[0028] The rotating shaft 42 is rotationally connected with the extrusion plate 51 through a rotating bearing 52.

[0029] The wire feeding motor 3 is located outside the shell 1, and the outer cover of the wire feeding motor 3 is provided with a protective shell 32 connected with the shell 1. The protective shell 32 can protect the wire feeding motor 3 from being collided.

[0030] The protective shell 32 is provided with a mounting lug 33, and the mounting lug 33 is detachably connected with the shell 1 through a fastening bolt 34.

[0031] A connecting groove 6 is vertically formed on one side wall of the protective shell 32, and a connecting block 7 is slidably arranged in the connecting groove 6. The wire feeding motor 3 is connected with the connecting block 7. An electric motor 8 is fixedly connected to the protective shell 32. A threaded rod 9 is rotationally arranged on the protective shell 32. The output shaft of the electric motor 8 is connected with the lower end of the threaded rod 9. The threaded rod 9 is threadedly connected with the connecting block 7. When the wire feeding mechanism is maintained, the electric motor 8 is started to rotate the threaded rod 9. The rotation of the threaded rod 9 can make the connecting block 7 slide in the connecting groove 6, so that the wire feeding motor 3 moves upward. The movement of the wire feeding motor 3 can quickly separate the driven gear 23 from the driving gear 31, so that the equipment can be prevented from being started under misoperation, and the rotation of the wire feeding wheel 2 can be avoided.

[0032] The above embodiments are only exemplary descriptions of the present application and do not limit the protection scope thereof. Those skilled in the art can also make changes to the parts thereof, as long as the changes do not exceed the spirit and essence of the present application, and are within the protection scope of the present application.

Claims

1. A wire feeding mechanism for laser welding with a structure stability adjustment, characterized by: The utility model provides a welding wire feeding device, including shell (1), wire feeder (2) and extruding wheel (4), be equipped with guide hopper (11) on the left side wall of shell (1), be equipped with conveying pipe (12) on the right side wall of shell (1), guide hopper (11) and conveying pipe (12) are coaxial, and welding wire passes into from guide hopper (11) and goes out from conveying pipe (12), be equipped with two connecting shafts (22) between guide hopper (11) and conveying pipe (12), the both ends of connecting shaft (22) are respectively with the front, rear side wall of shell (1) rotation cooperation, the middle part of connecting shaft (22) is sleeved with wire feeder (2), and the outer periphery of wire feeder (2) is with welding wire and resists, and extruding plate (51) is connected with the top wall of shell (1) through a plurality of return springs (5), and two rotating shafts (42) are respectively with extruding plate (51) rotation cooperation, and the middle part of rotating shaft (42) is sleeved with extruding wheel (4), and the both ends of rotating shaft (42) are equipped with connecting plate (43) respectively, and connecting plate (43) is fixedly installed with sliding block (44), and the front, rear side wall of shell (1) is vertically equipped with two sliding grooves (14) respectively, and four sliding blocks (44) are slidably matched with four sliding grooves (14) one to one, and two extruding wheels (4) are correspondingly pressed on two wire feeders (2), and the rear side wall of shell (1) is equipped with wire feeding motor (3), and the output shaft of wire feeding motor (3) is equipped with power gear (31), and the rear end of any connecting shaft (22) is equipped with driven gear (23), and power gear (31) is engaged with driven gear (23).

2. The wire feeding mechanism for laser welding with adjustment of structural stability according to claim 1, characterized in that: The conveying pipe (12) is connected with the shell (1) through the pipe clamp (13).

3. The wire feeder for laser welding with a structure stability adjustment according to claim 1, characterized in that: The outer periphery of the wire feeder (2) is provided with a limiting groove (21), and the outer periphery of the extruding wheel (4) is provided with an extruding protrusion (41) matched with the limiting groove (21).

4. The wire feeder for laser welding with a structure stability adjustment according to claim 1, characterized in that: The rotating shaft (42) is rotationally connected with the extruding plate (51) through the rotary bearing (52).

5. A wire feed mechanism for laser welding with a structure stability adjustment according to any one of claims 1 to 4, characterized in that: The wire feeding motor (3) is located outside the shell (1), and the wire feeding motor (3) is covered with a protective shell (32), and the protective shell (32) is connected with the shell (1).

6. The wire feed mechanism for laser welding with adjustment of structural stability according to claim 5, characterized in that: An installation lug (33) is arranged on the protective shell (32), and the installation lug (33) is detachably connected with the shell (1) through a fastening bolt (34).

7. The wire feed mechanism for laser welding with adjustment of structural stability according to claim 5, characterized in that: A connecting groove (6) is vertically arranged on one side wall of the protective shell (32), and a connecting block (7) is slidably arranged in the connecting groove (6), and the wire feeding motor (3) is connected with the connecting block (7), and an electric motor (8) is fixedly connected with the protective shell (32), and a threaded rod (9) is rotationally arranged on the protective shell (32), and an output shaft of the electric motor (8) is connected with a lower end of the threaded rod (9), and the threaded rod (9) is threadedly connected with the connecting block (7).

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