CN215747277U

CN215747277U - Wire feeding device of welding robot

Info

Publication number: CN215747277U
Application number: CN202121671848.9U
Authority: CN
Inventors: 刘洋
Original assignee: Wuhan Xinyangguang Precision Stamping Parts Co ltd
Current assignee: Wuhan Xinyangguang Precision Stamping Parts Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-02-08
Anticipated expiration: 2031-07-21

Abstract

The utility model discloses a wire feeding device of a welding robot, which comprises: the monitoring mechanism is provided with a wire disc, a rolling wheel, a rotating shaft, a first supporting rod, a first baffle, a second baffle and a sensor, wherein the rolling wheel is positioned above the wire disc and rolls close to the wire disc; the straightening mechanism comprises two straightening wheels and a driving piece, the straightening wheels are divided into two groups which are arranged in parallel, the number of each group of straightening wheels is two, the welding wire penetrates between every group of straightening wheels, and the driving piece is arranged on the two straightening wheels positioned on one side of the welding wire. The welding robot can monitor the welding wire allowance on one hand while feeding wires, and automatically control the welding robot to stop working when the welding wire allowance is insufficient; on the other hand, different welding wires can be automatically straightened, and good welding effect can be kept when different welding wires are used.

Description

Wire feeding device of welding robot

Technical Field

The utility model relates to the technical field of welding robots, in particular to a wire feeding device of a welding robot.

Background

Welding robot is a high automatic welding equipment, and welding robot is because of its advantages such as efficient work efficiency, excellent product quality output, is applied to in the automatic welding work more and more extensively. The output quality of the welding wire is closely related to the welding effect, and the wire feeding quality and the timely wire feeding become two important factors influencing the welding effect. Welding robot is at the working process, and general welding robot can't monitor the welding wire surplus, leads to welding robot to empty load work under the state that the welding wire used up easily. Moreover, general welding robot can't be aimed at ground and straighten to the welding wire of different models, influences the welding wire quality of output, causes negative effects to welding effect and machine.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wire feeding device of a welding robot, which can monitor the welding wire allowance, realize the control of the wire feeding device under the condition of insufficient welding wire allowance and automatically adapt to the straightening work of welding wires of different types.

According to an aspect of the present invention, there is provided a welding robotic wire feeder comprising:

the monitoring mechanism is provided with a wire disc, a rolling wheel, a rotating shaft, a first supporting rod, a first baffle, a second baffle and a sensor, wherein the rolling wheel is positioned at a wire outlet of the wire disc and is arranged on the rotating shaft in a penetrating way, the rolling wheel is tightly clung to the wire disc to roll, one end of the first supporting rod is connected with the rotating shaft, the other end of the first supporting rod is connected with the first baffle, the sensor is fixed on one surface, close to the rolling wheel, of the first baffle, and the first supporting rod is arranged on the second baffle in a penetrating way;

the straightening mechanism comprises two straightening wheels and a driving piece, the straightening wheels are arranged in parallel in two groups, the number of each group of straightening wheels is two, the welding wire penetrates between every group of straightening wheels, and the two straightening wheels positioned on one side of the welding wire are provided with the driving piece. This design can make the wheel that rolls reciprocate in the second baffle along with the reduction of welding wire drives first bracing piece, and when the sensor that first bracing piece drove on the first baffle touched the second baffle, promptly was not enough for the welding wire surplus this moment, and controller control driving piece stop-drive avoids welding robot to produce no-load motion because of the welding wire surplus is not enough.

According to some embodiments, the welding robot wire feeding device further comprises a body, the monitoring mechanism further comprises a second supporting rod, one end of the second supporting rod is fixed on the inner wall of the body, the other end of the second supporting rod is connected with the second baffle, the second baffle is provided with a through hole with the same shape as that of the end of the first supporting rod, and the first supporting rod penetrates through the through hole to be arranged on the second baffle and can move up and down in the through hole. According to the design, on one hand, the displacement of the rolling wheel in the vertical direction is restrained, on the other hand, the distance between the first baffle and the second baffle can be adjusted by adjusting the height of the second supporting rod, and different welding wire allowance values are set in a targeted mode according to the winding thickness of welding wires on different wire reels.

According to some embodiments, the sensor is a pressure sensor, the actuator of the sensor is electrically connected to the controller of the welding robot, and the sensor is configured to contact the second barrier when the first support bar is proximate to the second barrier. The design enables the pressure sensor to be activated and transmit an electrical signal to the controller when the pressure sensor detects insufficient welding wire remaining. And the pressure value when the pressure sensor is activated can be set, so that the accuracy of the monitoring result is ensured.

According to some embodiments, the driving member further comprises a driving motor and a first wheel shaft, the first wheel shaft penetrates through the straightening wheel, an output shaft of the driving motor is connected with the first wheel shaft, the first wheel shaft drives the straightening wheel to move, a positioning portion limiting the position of the first wheel shaft is arranged on the inner wall of the body, and the first wheel shaft is rotatably connected with the positioning portion. The design provides power for the wire feeding device, and the driving motor drives the straightening wheel fixed on the first wheel shaft to perform wire feeding motion.

According to some embodiments, the straightening mechanism further comprises an extrusion piece, the extrusion piece is arranged on two straightening wheels on the other side of the welding wire, the extrusion piece is pressed on the driving piece, the extrusion piece comprises a second wheel shaft, a positioning rod and a supporting plate, the second wheel shaft is rotatably connected with the two straightening wheels of the extrusion piece, a fixing hole for fixing the second wheel shaft is formed in the supporting plate, two ends of the second wheel shaft are fixed in the fixing hole, the positioning rods are parallel to each other and fixed on the inner wall of the body, and the supporting plate is inserted in the positioning rod. The design enables the extrusion part to have a straightening effect on the welding wire, and the extrusion part can automatically adjust the distance between two straightening wheels in each group according to the diameters of the welding wires in different specifications.

According to some embodiments, the outer wall of the straightening wheel is sleeved with a dust-proof ferrule made of nylon. The design has the advantages that on one hand, the straightening wheel is subjected to dustproof treatment, negative effects on straightening of the welding wire caused by fine particles attached to the surface of the straightening wheel are avoided, and on the other hand, the dustproof ferrule enables the wire feeding process of the welding wire to be more stable and smooth.

According to some embodiments, the straightening mechanism further comprises a positioning tube fixed to the inner wall of the body and arranged in parallel on the side of the two sets of straightening wheels facing away. This design has set up the registration arm, and the registration arm has fixed a position that the welding wire passed in and out the straightening mechanism, has strengthened the straightening effect of straightening mechanism to the welding wire.

According to some embodiments, through holes for the welding wire to pass through are formed in two end faces of the positioning pipes, the two positioning pipes are arranged in a collinear mode, and the opening direction of the through holes is consistent with the transmission direction of the welding wire between the straightening wheels. The design restrains the opening direction of the positioning tube, so that the position of the welding wire entering and exiting the straightening mechanism and the straightening position of the welding wire in the straightening mechanism are on the same horizontal line, and the straightening effect of the straightening mechanism on the welding wire is further enhanced.

According to some embodiments, the welding robot wire feeding device further comprises a wire feeding hose, one end of the wire feeding hose is connected with the positioning pipe close to the monitoring mechanism, the other end of the wire feeding hose is fixed at the positioning part, and the opening direction of the wire feeding hose faces the wire disc. This design has both protected welding robot's job stabilization nature for welding robot can not cause the welding wire to be got rid of into welding robot's working structure because of the unrestrained whipping of welding wire, produces adverse effect to welding robot's operation, makes the welding wire not receive external environment's harm in transportation process again, the structural design of the welding robot complete machine of being convenient for.

The utility model provides a wire feeding device of a welding robot, which comprises a monitoring mechanism and a straightening mechanism. The monitoring mechanism is provided with a wire disc, a rolling wheel, a rotating shaft, a first supporting rod, a first baffle, a second baffle and a sensor, wherein the rolling wheel is located at a wire outlet of the wire disc, the rolling wheel is arranged on the rotating shaft in a penetrating mode, the rolling wheel is tightly attached to the wire disc to roll, one end of the first supporting rod is connected with the rotating shaft, the other end of the first supporting rod is connected with the first baffle, the sensor is fixed on the first baffle and close to one side of the rolling wheel, and the first supporting rod is arranged on the second baffle in a penetrating mode. The straightening mechanism comprises two straightening wheels and a driving piece, the straightening wheels are arranged in parallel in two groups, the number of each group of straightening wheels is two, the welding wires sequentially penetrate between the straightening wheels of each group, and the driving piece is arranged on the two straightening wheels on one side of the welding wires. According to the utility model, through the structural design of the monitoring mechanism and the straightening mechanism, the welding wire allowance can be monitored for different types of wire coils, the driving mechanism can be timely controlled to stop the machine when the welding wire allowance is insufficient, and the welding wire straightening machine can automatically make adaptive adjustment for different types of welding wires in the straightening process, so that the quality of the output welding wires is ensured. Therefore, the wire feeding device can be controlled according to the welding wire allowance, and the straightening device can automatically adapt to straightening work of welding wires of different types, and is convenient and fast in method and wide in application range.

Drawings

In order to more clearly illustrate the embodiments or prior art solutions of the present invention, the following briefly introduces the drawings which are needed for practical use in the embodiments or prior art descriptions, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic diagram of a monitoring mechanism according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an alignment mechanism according to an embodiment of the present invention;

fig. 4 is a sectional view a-a of fig. 3.

In the figure: 100. the welding wire straightening device comprises a body, 101, a wire feeding hose, 102, a welding wire, 103, a positioning part, 120, a monitoring mechanism, 140, an aligning structure, 121, a wire disc, 122, a rolling wheel, 123, a rotating shaft, 124, a first supporting rod, 125, a first baffle, 126, a second baffle, 127, a sensor, 128, a second supporting rod, 141, an aligning wheel, 142, a driving piece, 143, a driving motor, 144, a first wheel shaft, 145, an extrusion piece, 146, a second wheel shaft, 147, a positioning rod, 148, a supporting plate, 149, a positioning tube and 150, and a dustproof ferrule.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

Referring to fig. 1 to 4, the wire feeding device of the welding robot according to the present invention includes a monitoring mechanism 120 and a straightening mechanism 140. As the name implies, the monitoring mechanism 120 is a combination of various structures in the wire feeder for monitoring the remaining amount of the welding wire 102 and controlling the start and stop of the wire feeder; the primary function of straightening mechanism 140 in the wire feeder is to straighten the bent wire 102.

Referring to fig. 2, the monitoring mechanism 120 is one of the main structures of the wire feeding device, and the monitoring mechanism 120 has a wire reel 121, a rolling wheel 122, a rotating shaft 123, a first supporting rod 124, a first baffle 125, a second baffle 126 and a sensor 127. The rolling wheel 122 is positioned at the wire outlet of the wire disc 121 and rolls tightly against the wire disc 121. In the embodiment, the wire reel 121 is wound with the looped welding wire 102, and the rolling wheel 122 is located at the wire outlet above the wire reel 121 and rolls against the welding wire 102. The rolling wheel 122 is disposed on the rotating shaft 123, that is, the rolling wheel 122 is disposed at a fixed position on the rotating shaft 123 and performs a rolling motion at the fixed position. One end of the first supporting rod 124 is connected to the rotating shaft 123, and the other end is connected to the first baffle 125, so that the first baffle 125 and the rotating shaft 123 are connected through the first supporting rod 124, and the fixing manner is not limited, and may be welding, gluing, screwing, and other forms commonly known in the art. In order to ensure the structural stability of the monitoring mechanism 120, the first supporting rod 124 should be perpendicularly fixed to the rotating shaft 123 and the first barrier 125, that is, a center line of the rotating shaft 123 is parallel to an end surface of the first barrier 125, and a center line of the rotating shaft 123 is perpendicular to one side surface of the first barrier 125. The first support rod 124 is inserted through the second baffle 126, and the sensor 127 is fixed on a surface of the first baffle 125 close to the rolling wheel 122. That is, the first supporting rod 124 can move up and down inside the second baffle 126, and when the first supporting rod 124 moves enough inside the second baffle 126 to make the first baffle 125 and the second baffle 126 contact, the sensor 127 fixed on the first baffle 125 contacts the second baffle 126, and transmits an electrical signal to the controller, so as to control the machine through the controller. The first baffle 125 and the second baffle 126 are both plate-shaped structures, and the thickness of the first baffle 125 is small compared with the other two dimensions thereof, and can be ignored. In order to ensure that the first supporting rod 124 can drive the first baffle 125 to move up and down inside the second baffle 126, it is necessary to ensure that the monitoring mechanism 120 is vertically arranged, that is, the first baffle 125 and the second baffle 126 are arranged parallel to the ground, the area of the end surface of the first baffle 125 does not exceed the area of the end surface of the second baffle 126, the second baffle 126 also needs to consider the thickness of the second baffle and the size of the second baffle in the other two directions, so that the first supporting rod 124 is ensured to have a good and stable displacement effect inside the second baffle 126. In the present embodiment, as the welding wire 102 is continuously drawn from the wire reel 121, the rolling wheel 122 rolls. As the welding wire 102 on the wire reel 121 decreases, the current position of the rolling wheel 122 is in a continuously descending state compared to the initial position, and the descending of the position of the rolling wheel 122 drives the descending of the positions of the rotating shaft 123, the first supporting rod 124 and the first baffle 125.

In some embodiments, when the remaining amount of the welding wire 102 is insufficient or reaches a predetermined dangerous value of the remaining amount of the welding wire 102, the first stop plate 125 contacts the second stop plate 126, the sensor on the first stop plate 125 contacts the second stop plate 126, the sensor is activated, and transmits an electrical signal to the controller, and the controller controls the driving member 142 to stop rotating, thereby controlling the wire feeding device.

Referring to fig. 2, in order to make the space of the monitoring mechanism 120 more compact and the monitoring result of the welding wire 102 more accurate and reliable, the monitoring mechanism 120 is further provided with a second supporting rod 128, one end of the second supporting rod 128 is fixed on the inner wall of the body 100, and the other end is connected with the second baffle 126. The connection method is not limited, and can be welding, gluing, screwing and the like which are common in the field. Therefore, the establishment of the second support rod 128 fixes the relative position of the monitoring mechanism 120 and the body 100, so that the monitoring mechanism 120 can be fixed inside the body 100 and arranged perpendicular to the ground. The second baffle 126 is provided with a through hole having the same shape as the end surface of the first supporting rod 124, and the first supporting rod 124 is inserted into the second baffle 126 through the through hole. The through hole constrains the horizontal degree of freedom of the first support rod 124 within the second baffle 126 such that the first support rod 124 can only move in a displacement manner along the axial direction of the through hole. In the present embodiment, in order to improve the accuracy of the monitoring result, the second supporting rod 128 is particularly vertically installed inside the body 100, i.e. the second supporting rod 128 is vertically installed with respect to the ground. In order to adapt to different types of wire reels 121, such as different diameters of the wire reels 121, different thicknesses of the welding wire 102 wound on the wire reels 121, and the like, the height of the second support rod 128 can be adjusted to adjust the distance between the first baffle 125 and the second baffle 126, so that the dangerous margin value of the welding wire 102 can be set specifically for different types of wire reels 121. For example, the second support rod 128 may have a plurality of vertical position-limiting grooves, and the second baffle may be disposed in the position-limiting grooves with different heights, so as to adjust the height. When the dangerous margin value of wire 102 is reached, first stop 125 contacts second stop 126, sensor 127 is activated and transmits an electrical signal to the controller.

It will be appreciated that the pressure sensor 127 is one of the types of sensors 127 described in the embodiments above. In some embodiments, when the pressure sensor 127 is in contact with the second shutter 126, the pressure sensor 127 measures a pressure value, and the pressure value increases as the roller wheel 122 descends in the vertical direction until a preset pressure value is reached. Since the pull-out of wire 102 during operation may cause roller wheel 122 to bounce up and down, 80% -90% of the maximum pressure value may be selected as the dangerous margin value for wire 102. The detection result is ensured to have stability, and the no-load operation of the machine is avoided.

Referring to fig. 3 and 4, the straightening mechanism 140 is another main structure of the wire feeder, the straightening mechanism 140 includes two groups of straightening wheels 141 and a driving member 142, the straightening wheels 141 are arranged in parallel, the number of the straightening wheels 141 is two, and the welding wire 102 sequentially passes through between the straightening wheels 141. That is, the welding wire 102 is squeezed between the two straightening wheels 141 of each group, and this structure enables the welding wire 102 to have a smoother appearance after passing through the straightening wheels 141, so as to achieve the working effect of straightening the welding wire 102. Within the accommodating range, the alignment mechanism 140 does not limit the arrangement position and the arrangement distance of the two sets of alignment wheels 141, and the two sets of alignment wheels 141 can be arranged horizontally or at an inclined angle. In order to complete the wire feeding operation, a driving member 142 is disposed on straightening wheel 141 on one side of welding wire 102 to drive straightening wheel 141 to rotate, and the rotation of straightening wheel 141 drives welding wire 102 on straightening wheel 141 to perform a transmission motion, thereby completing the wire feeding operation. In this embodiment, the welding wire 102 enters between the two straightening wheels 141 of each group from the input end in a bent state, the driving member 142 on the two straightening wheels 141 on one side of the welding wire 102 drives the straightening wheels 141 to rotate, and further drives the welding wire 102 between the straightening wheels 141 of each group to move forward, and the welding wire 102 is finally sent out from the output end in a flat state.

Referring to fig. 4, in some embodiments, the positioning portion 103 for limiting the position of the mechanism component is disposed on the inner wall of the welding robot, so that the monitoring mechanism 120 and the straightening mechanism 140 can be more firmly fixed, and the working effect of the wire feeding device is more stable and reliable.

Referring to fig. 3 and 4, the alignment mechanism 140 further includes an extrusion member 145, the extrusion member 145 is disposed on the alignment wheel 141 at a side away from the monitoring mechanism 120, the extrusion member 145 has a second axle 146, a positioning rod 147 and a supporting plate 148, the second axle 146 is rotatably connected to the two alignment wheels 141 of the extrusion member 145, the supporting plate 148 is provided with a hole for fixing the second axle 146, and is inserted into the positioning rod 147, and the positioning rod 147 is fixed in parallel to the inner wall of the body 100. The driving member 142 has a driving motor 143 and a first wheel shaft 144, and the first wheel shaft 144 is fixedly connected to the straightening wheel 141. In this embodiment, the pressing members 145 and the driving member 142 are disposed on two sides of the welding wire 102, and the pressing members 145 press the welding wire 102 on the straightening wheels 141 of the driving member 142, so that the welding wire 102 is straightened by the two straightening wheels 141 and then is changed from a bent state to a straight state, thereby providing a good welding basis for welding work. The positioning part 103 is provided with a bearing, and one end of the first wheel shaft 144 penetrates through and is matched with the inner ring of the bearing; the other end of the first wheel shaft 144 is connected to an output shaft of the driving motor 143 through a coupling. When straightening mechanism 140 is in operation, drive motor 143 drives first axle 144 to rotate, and first axle 144 drives straightening wheel 141 fixed thereto to rotate, thereby driving welding wire 102 to move. Second hub 146 is secured to support plate 148 and is rotatably coupled to alignment wheel 141, i.e., alignment wheel 141 is secured to second hub 146 and is capable of rotating in a fixed position with the advancement of welding wire 102. The support plate 148 is inserted into the positioning rod 147 and is movable in the direction of the positioning rod 147. When no wire 102 enters alignment mechanism 140, extrusion 145 drops under the force of gravity along positioning rod 147, and alignment wheel 141 of extrusion 145 rests above alignment wheel 141 of drive member 142; when welding wire 102 enters straightening mechanism 140, extrusion 145 receives an upward component of acting force due to the extrusion of welding wire 102, so that upward displacement is generated along positioning rod 147, and welding wire 102 can enter straightening mechanism 140; as wire 102 exits straightening mechanism 140, the force of gravity acts to press extrusion 145 against wire 102, and the force of gravity of extrusion 145 itself has a positive effect on the straightening of wire 102. Due to the arrangement of the extrusion part 145, the straightening mechanism 140 can automatically adapt to straightening work of welding wires 102 of different types, the variety of applicable types is increased, and the production cost is reduced.

In some cases, considering factors such as manufacturing process, usage environment, and cost, the straightening wheel 141 is mostly made of 45 steel, and although 45 steel can satisfy the working strength of the straightening wheel 141, in order to further improve the wire feeding effect of this embodiment, in some embodiments, the outer wall of the straightening wheel 141 is sleeved with a dust-proof ferrule 150 made of nylon. The outer wall of the straightening wheel 141 is sleeved with a dust-proof ferrule 150 to prevent dust and dust generated in the welding process from drifting into the straightening mechanism 140 and attaching to the outer wall of the straightening wheel 141, so that adverse effects on the welding wire 102 are generated in the wire feeding process. The nylon material has the advantages of smooth surface, small friction coefficient and wear resistance, and has a protective effect on the welding wire 102. And the dustproof ferrule 150 is used as a transmission part, and the nylon material is adopted, so that the service life of the dustproof ferrule 150 can be prolonged, and the vibration of the welding wire 102 in the transmission process can be reduced.

In some embodiments, alignment mechanism 140 further includes two positioning tubes 149, which are fixed to the inner wall of body 100, and are disposed at the delivery end and the output end of alignment mechanism 140, respectively, and the centerline of positioning tubes 149 is collinear with the delivery path of welding wire 102 inside alignment wheel 141. The positioning tube 149 is provided to enhance the straightening of welding wire 102 by straightening mechanism 140 so that the feeding path of welding wire 102 remains straight from the feeding end of positioning tube 149 to the discharge end of welding wire 102.

It will be appreciated that positioning tube 149 provided to alignment mechanism 140 may guide the path of wire 102 before and after alignment wheel 141, and wire feed hose 101 may be used to achieve the desired results if it is desired to constrain the path of wire 102 throughout the wire feeder. In some embodiments, a flexible wire feed conduit 101 is coupled between monitoring mechanism 120 and straightening mechanism 140. During the use of the welding robot, the transmission route of the welding wire 102 is restricted, so that the negative influence on the welding work caused by the shaking of the welding wire 102 can be avoided. One end of the wire feeding hose 101 is located at the wire outlet of the wire disc 121, and the welding wire 102 located on the wire disc 121 is fed into the wire feeding hose 101 after leaving the wire disc 121; the other end of wire feed hose 101 is connected to positioning tube 149 at the input end of straightening mechanism 140, so that when welding wire 102 is pulled out from wire reel 121 and enters into positioning tube 149, the feeding route of welding wire 102 is restricted, which not only protects the stability of welding robot, but also ensures that welding wire 102 is not damaged by environment during feeding. The setting position of the wire feeding hose 101 is not restricted, and the wire feeding hose 101 can be set outside the welding robot, and the body 100 is provided with a communication mode to connect the wire feeding hose 101 with the monitoring mechanism 120 and the straightening mechanism 140; the wire feeding hose 101 may be designed to be fed inside the body 100.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A welding robot wire feeder, characterized by comprising:

the monitoring mechanism is provided with a wire disc, a rolling wheel, a rotating shaft, a first supporting rod, a first baffle, a second baffle and a sensor, wherein the rolling wheel is positioned at a wire outlet of the wire disc, the rolling wheel is arranged on the rotating shaft in a penetrating mode, the rolling wheel rolls along the wire disc in a clinging mode, one end of the first supporting rod is connected with the rotating shaft, the other end of the first supporting rod is connected with the first baffle, the sensor is fixed on one surface, close to the rolling wheel, of the first baffle, and the first supporting rod is arranged on the second baffle in a penetrating mode; and

the straightening mechanism comprises straightening wheels and a driving piece, the straightening wheels are divided into two groups which are arranged in parallel, the number of each group of straightening wheels is two, the welding wire penetrates through the two straightening wheels of the same group, and the two straightening wheels on one side of the welding wire are provided with the driving piece.

2. The welding robotic wire feeder of claim 1, wherein:

welding robot wire drive feed unit still includes the body, monitoring mechanism still includes the second bracing piece, the one end of second bracing piece is fixed on the inner wall of body, and the other end with the second baffle is connected, the second baffle seted up with the perforation that first bracing piece facial geometry is the same, first bracing piece warp the perforation is worn to locate the second baffle, and can displacement about in the perforation.

3. The welding robotic wire feeder of claim 2, wherein:

the sensor is a pressure sensor, the sensor is electrically connected with a controller of the welding robot, and the sensor is used for contacting with the second baffle when the first supporting rod is close to the second baffle.

4. The welding robotic wire feeder of claim 2, wherein:

the driving piece further comprises a driving motor and a first wheel shaft, the first wheel shaft penetrates through the straightening wheel, an output shaft of the driving motor is connected with the first wheel shaft, the first wheel shaft drives the straightening wheel to move, a positioning portion for limiting the position of the first wheel shaft is arranged on the inner wall of the body, and the first wheel shaft is rotatably connected with the positioning portion.

5. The welding robotic wire feeder of claim 4, wherein:

the straightening mechanism further comprises an extrusion piece, the extrusion piece is arranged on two straightening wheels on the other side of the welding wire, the extrusion piece is pressed on the driving piece, the extrusion piece comprises a second wheel shaft, a positioning rod and a supporting plate, the second wheel shaft is connected with the straightening wheels of the extrusion piece in a rotating mode, the supporting plate is provided with a fixing hole for fixing the second wheel shaft, two ends of the second wheel shaft are fixed in the fixing hole and are multiple, the positioning rods are parallel to each other and fixed on the inner wall of the body, and the positioning rods are inserted and sleeved in the supporting plate.

6. The welding robotic wire feeder of claim 5, wherein:

the outer wall of the straightening wheel is sleeved with a dustproof ferrule made of nylon.

7. The welding robotic wire feeder of claim 2, wherein:

the straightening mechanism further comprises two positioning pipes, the two positioning pipes are fixed to the inner wall of the body and are respectively arranged on two sides of the straightening mechanism, and welding wires enter and exit from the straightening mechanism.

8. The welding robotic wire feeder of claim 7, wherein:

the welding wire straightening device is characterized in that through holes for the welding wire to pass through are formed in two end faces of the positioning pipes, the two positioning pipes are arranged in a collinear mode, and the opening direction of the through holes is consistent with the transmission direction of the welding wire between the straightening wheels.

9. The welding robotic wire feeder of claim 7, wherein:

welding robot wire drive feed unit still includes and send a hose, send a hose one end with be close to straightening mechanism the registration arm is connected, and the other end is fixed monitoring mechanism, and the opening direction orientation the silk dish.