CN219786911U - Device for buffering welding wire - Google Patents

Abstract

The utility model discloses a device for buffering welding wires, which comprises: the arc-shaped buffer shell is internally provided with a lower buffer space which is matched with the arc-shaped buffer shell in shape; two ends of the lower buffer space are respectively provided with a wire inlet end and a wire outlet end, and the wire inlet end and the wire outlet end are respectively connected with a hollow wire guide connector; a limit connecting piece and a movable connecting piece are respectively arranged in the guide wire connector at the wire outlet end, and a spring is connected between the limit connecting piece and the movable connecting piece; the inner wire guide pipe at the wire feeding end penetrates from the wire guide connector at the wire feeding end, extends into the wire guide connector at the wire discharging end along the lower buffer space, and is connected with the movable connecting piece; the wire outlet end guide wire inner tube penetrates from the wire outlet end guide wire connector and is connected with the limit connecting piece. According to the utility model, the wire inlet end guide wire inner pipe and the wire outlet end guide wire inner pipe are connected and communicated through the spring, so that no break point is ensured in the process of passing the welding wire along the guide wire inner pipe, the continuity of a wire passing channel is ensured, and the problems of welding wire bending or wire blocking and the like are avoided.

Description

Device for buffering welding wire

Technical Field

The utility model relates to the technical field of welding, in particular to a device for buffering welding wires.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The existing servo welding system generally comprises a front motor and a rear motor, wherein the front servo motor is internally arranged in a welding gun, the forward and backward drawing of welding wires are controlled by a control system, the rear wire pushing motor is internally arranged in a wire feeder or a welding machine power supply, and the front wire pushing motor is controlled by the control system to push wires forward at a constant wire feeding speed; because different wire feeding speeds and wire feeding directions can cause excessive welding wires to temporarily exist in a wire feeding system, and further the problems of unstable wire feeding, welding splashing, uneven welding seam forming and the like occur, a device for buffering the welding wires needs to be designed for coordinating the periodic movement of the welding wires, and the relative stability of wire feeding is ensured.

Aiming at the problems, the welding wire buffering device disclosed at present mainly comprises two modes of bare wire buffering and wire guide tube buffering:

(1) when bare wire buffering is adopted, as no guide wire guide path exists, a buffering device is required to be opened in the wire threading process, wire threading is carried out according to the corresponding position, and barrier-free continuous wire threading of welding wires cannot be realized; and the buffer device is internally lack of the constraint of the wire guide tube, so that the welding wire is easy to bend or block.

(2) When the wire guide tube is adopted for buffering, in order to provide a certain buffering space when the bending radius of the welding wire is changed, the wire guide tube in the buffering device is often arranged to be fixed at a wire inlet end, a wire outlet end is a free end, or the wire inlet end and the wire outlet end are both free ends, so that the welding wire bending device can adapt to the bending of the welding wire; however, the existence of the free end can cause break points of the wire threading channel, so that the unobstructed continuous threading of the welding wire can not be ensured.

Disclosure of Invention

In order to solve the problems, the utility model provides a device for buffering welding wires, which is characterized in that a wire inlet end guide wire inner pipe and a wire outlet end guide wire inner pipe are connected and communicated through a spring, so that no break point is caused in the process of passing the welding wires along the guide wire inner pipe, the continuity of a wire passing channel is ensured, and the problems of welding wire bending, wire blocking and the like are avoided.

In some embodiments, the following technical scheme is adopted:

an apparatus for buffering welding wire, comprising: the buffer shell is arc-shaped, and a lower buffer space matched with the buffer shell in shape is arranged in the buffer shell; two ends of the lower buffer space are respectively provided with a wire inlet end and a wire outlet end, and the wire inlet end and the wire outlet end are respectively connected with a hollow wire guide connector; a limit connecting piece and a movable connecting piece are respectively arranged in the guide wire connector of the wire outlet end, and a spring is connected between the limit connecting piece and the movable connecting piece;

the inner wire guide pipe at the wire feeding end penetrates from the wire guide connector at the wire feeding end, extends into the wire guide connector at the wire discharging end along the lower buffer space, and is connected with the movable connecting piece; the wire outlet end guide wire inner tube penetrates from the wire outlet end guide wire connector and is connected with the limit connecting piece.

As a further scheme, a through hole is formed in the lower buffer space, an angle sensor is fixed on the lower surface of the buffer shell, a pin shaft of the angle sensor penetrates through the through hole and is connected with one end of a buffer swinging rod, and the buffer swinging rod can swing within a set range by taking the pin shaft as a center; the buffering swinging rod is provided with a rectangular limiting groove, and the wire guide inner pipe at the wire feeding end penetrates through the rectangular limiting groove.

As a further scheme, the guide wire connector of the wire feeding end is connected with the guide wire outer tube of the wire feeding end through a connecting piece, and the guide wire inner tube of the wire feeding end is fixed inside the guide wire outer tube of the wire feeding end.

As a further scheme, the wire connector of the wire outlet end is connected with the wire outer tube of the wire outlet end through a connecting piece, and the wire inner tube of the wire outlet end is fixed inside the wire outer tube of the wire outlet end.

As a further scheme, one end of the limiting connecting piece is connected with the spring through a spring internal thread, the other end of the limiting connecting piece is of a hollow structure, and the wire outlet end guide wire inner tube extends into the hollow structure; and jackscrew screws are symmetrically arranged on two sides of the hollow structure and used for connecting the limiting connecting piece with the wire guiding inner tube at the wire outlet end.

As a further scheme, one end of the movable connecting piece, which is opposite to the limiting connecting piece, is connected with the spring through a spring internal thread, and the other end of the movable connecting piece is connected with a wire guide inner pipe at a wire feeding end through a common internal thread; the movable connecting piece can move back and forth along with the movement of the inner tube of the guide wire at the wire feeding end, so as to drive the spring to stretch and retract.

As a further proposal, the inner diameter of the spring is the same as the inner diameters of the inner tube of the guide wire at the wire feeding end and the inner tube of the guide wire at the wire discharging end.

As a further scheme, the outer surface of the guide wire connector is also symmetrically provided with a clamping limit groove, and the clamping limit groove can be clamped with a clamping buckle of the wire inlet and outlet end arranged on the buffer shell.

As a further scheme, the method further comprises the following steps: the buffer cover plate is matched with the shape of the buffer shell, and an upper buffer space matched with the lower buffer space is arranged in the buffer cover plate; one side of the buffer cover plate is rotatably connected with the buffer shell, and the other side of the buffer cover plate can be clamped by the turning-in and buckling cooperation of the clamping boss and the buffer bottom plate.

As a further proposal, the buffer cover plate is provided with a transparent observation window for observing the motion state of the internal welding wire.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The utility model is provided with the wire inlet end guide wire inner pipe and the wire outlet end guide wire inner pipe, the welding wire penetrates along the guide wire inner pipe, and the guide wire inner pipe can play a role in guiding the welding wire to penetrate.

(2) When the cycle of the forward and backward drawing of the welding wire is changed, the bending radius of the welding wire is changed in the buffer space due to the fact that the forward and backward drawing speeds are not uniform, the welding wire drives the buffer swinging rod to move around a pin shaft of the angle sensor in the buffer space at a certain swinging amplitude and a certain swinging speed through the wire-feeding end inner tube, so that the problem that the forward and backward drawing speeds of the welding wire are not uniform is solved, and the bending degree of the welding wire can be represented through the swinging amplitude of the buffer swinging rod.

(3) The utility model is characterized in that a limit connecting piece and a movable connecting piece are respectively arranged in a guide wire connector at a wire outlet end, wherein the limit connecting piece is used for connecting an inner guide wire pipe at the wire outlet end, the movable connecting piece is used for connecting an inner guide wire pipe at a wire inlet end, and a spring is connected between the limit connecting piece and the movable connecting piece; the movable connecting piece is movably arranged in the guide wire connector at the wire outlet end, the bending of the welding wire can drive the guide wire inner pipe at the wire inlet end to bend, the bending of the guide wire inner pipe at the wire inlet end drives the movable connecting piece to move forwards and backwards, and the front and back movement of the movable connecting piece can drive the stretching and retracting of the spring; therefore, the arrangement of the spring provides a certain movable space for the inner tube of the guide wire at the wire feeding end. Meanwhile, the inner diameter of the spring is the same as that of the inner tube of the guide wire, and the space between the inner tube of the guide wire at the wire inlet end and the inner tube of the guide wire at the wire outlet end is subjected to seamless connection through the spring; therefore, the welding wire can be smoothly penetrated along the guide wire inner tube without opening the buffer cover plate, and the welding wire can be ensured to be rapidly and smoothly penetrated without blocking the wire because no break point exists in the middle.

Additional features and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

FIG. 1 is a schematic front view of an apparatus for buffering welding wire according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the back side structure of an apparatus for buffering welding wire according to an embodiment of the present utility model;

FIG. 3 is a schematic top axial side view of an apparatus for buffering welding wire in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic view of the bottom axial side structure of an apparatus for buffering welding wire in an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of a wire feed end in an embodiment of the present utility model;

FIG. 6 is a cross-sectional view of the wire exiting end in an embodiment of the utility model;

wherein 10, a buffer shell, 101, a lower limit groove of a guide wire connector, 102, a limit buckle of the guide wire connector, 103, a limit boss of the guide wire connector, 104, a turnover limit shaft, 105, a lower buffer space, 20, a buffer cover plate, 201, an upper limit groove of the guide wire connector, 202, a clamping boss, 203, an upper buffer space, 204, a transparent observation window, 205, a turnover shaft groove, 206, a clamping groove, 30, an angle sensor, 40, a buffer bottom plate, 401, a turnover buckle, 402, an angle sensor control line wire through hole, 50, a buffer bottom plate bracket, 501, a control socket, 60 and a buffer swing rod, 601, D-shaped taper limiting holes, 602, rectangular limiting grooves, 70, a wire inlet end wire guide inner pipe, 80, a wire outlet end wire guide inner pipe, 90, a wire guide outer pipe, 100, a wire guide connector, 1001, connector external threads, 1002, wrench grooves, 1003, buckle limiting grooves, 110, a quick socket, 120, limiting connectors, 1201, limiting connector spring internal threads, 1202, limiting connector cylindrical hollow, 1203, jackscrew, 130, movable connectors, 1301, movable connector common internal threads, 1302, movable connector spring internal threads, 140, springs, 150 and welding wires.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Example 1

In one or more embodiments, an apparatus for buffering welding wire is disclosed, in combination with fig. 1 and 3, specifically comprising: the buffer shell 10 is arc-shaped, two ends of the buffer shell 10 are symmetrically provided with a lower limit groove 101 of the guide wire connector, and two sides of the lower limit groove 101 of the guide wire connector are symmetrically provided with a guide wire connector buckle 102 and a guide wire connector limit boss 103; the top of the buffer shell 10 is provided with a turning limiting shaft 104, and a lower buffer space 105 which is matched with the shape of the buffer shell 10 is arranged in the buffer shell; the two ends of the lower buffer space 105 are respectively provided with a wire inlet end and a wire outlet end, a circular through hole is arranged in the lower buffer space, the angle sensor 30 is fixed on the lower surface of the buffer shell 10, a pin shaft of the angle sensor 30 penetrates through the circular through hole and is connected with a D-shaped taper limiting hole 601 formed in one end of the buffer swinging rod 60, and the buffer swinging rod 60 can swing in a fan-shaped range of a set angle by taking the pin shaft as a center.

The level difference exists in the plane in the lower buffer space 105, so that the friction between the wire guide inner tube 70 at the wire feeding end and the inner surface of the lower buffer space 105 can be reduced, and the flexible and undisturbed action of the buffer swinging rod 60 is ensured.

The buffer swing rod 60 is provided with a rectangular limit groove 602 for the wire guide inner tube 70 at the wire feeding end to pass through.

In this embodiment, the angle sensor 30 is mounted on the lower surface of the buffer housing 10 by a screw or other forms, and the swing angle of the buffer swing lever 60 is detected by the angle sensor 30 and fed back to the control system for detecting the bending degree of the welding wire 150 inside the buffer housing 10.

In this embodiment, referring to fig. 5, a hollow guide wire connector 100 is connected to the wire feeding end, and connector external threads 1001 are provided at the end of the guide wire connector 100, for installing a quick socket 110, and connected to the guide wire outer tube 90 of the wire feeding end through the quick socket 110; the wire-feeding end inner tube 70 sequentially passes through the wire connector 100 of the wire-feeding end and then passes through the rectangular limit groove 602 on the buffer swing rod 60 to enter the interior of the wire connector 100 of the wire-discharging end.

Referring to fig. 6, the wire outlet end is connected with a hollow wire guide connector 100, and the end of the wire guide connector 100 is provided with a connector external thread 1001 for installing a quick socket 110, and is connected with the wire guide outer tube 90 of the wire outlet end through the quick socket 110; a limit connecting piece 120 and a movable connecting piece 130 are respectively arranged in the hollow part of the guide wire connector 100 at the wire outlet end, and a spring 140 is connected between the limit connecting piece 120 and the movable connecting piece 130; the limiting connector 120 is fixedly connected inside the guide wire connector 100 at the wire outlet end, the movable connector 130 is movably arranged inside the guide wire connector 100 at the wire outlet end, and the spring 140 is a common tension spring, so that a person skilled in the art can select the spring according to requirements. The wire outlet end inner guide tube 80 penetrates into the wire outlet end guide connector 100 and is connected with the limit connecting piece 120; the wire-feeding end inner tube 70 enters the interior of the wire connector 100 at the wire-discharging end and is connected with the movable connector 130.

In this embodiment, the wire-feeding end inner tube 70 is made of a relatively soft material and has a low friction coefficient, and its inner diameter is larger than the outer diameter of the welding wire 150, so as to facilitate penetration of the welding wire 150; the wire outlet end guide wire inner tube 80 is made of a harder material and has a lower friction coefficient, and the inner diameter of the wire outlet end guide wire inner tube is larger than the outer diameter of the welding wire 150, so that the welding wire 150 can penetrate conveniently; the guide wire outer tube 90 is made of a harder material and has a lower friction coefficient, and the inner diameter of the guide wire outer tube is larger than the outer diameter of the guide wire inner tube, so that the penetration of the guide wire inner tube is facilitated; the inner wire-end guide tube 70 and the inner wire-end guide tube 80 are fixed inside the outer wire guide tube 90 in a manner that is selectable by those skilled in the art according to the prior art, and is not specified herein.

In this embodiment, the gap between the inner wire tube 70 at the wire feeding end and the inner wire tube 80 at the wire discharging end is connected by the spring 140, and the inner diameter of the spring 140 is the same as that of the inner wire tube, so that the continuity of the through passage of the welding wire 150 is ensured. During the advancing and retracting process of the welding wire 150, the bending of the welding wire 150 drives the bending of the wire feeding end inner guide tube 70, so that the buffer swinging rod 60 swings, and the movable connecting piece 130 is driven to move when the wire feeding end inner guide tube 70 bends, so that the spring 140 periodically stretches and retracts. The above structural design provides a certain buffer space for the bending of the welding wire 150, and simultaneously ensures that the spring 140, the wire inlet end inner guide tube 70 and the wire outlet end inner guide tube 80 can always keep a continuous penetrating state in the advancing and back drawing process of the welding wire 150, accurately guides the welding wire 150 to pass smoothly, and avoids bending or wire blocking of the welding wire 150.

In this embodiment, one end of the movable connecting piece 130 is provided with a common internal thread 1301 of the movable connecting piece, and the end is directly screwed to one end of the wire guide inner tube 70 at the wire feeding end, and the screwing in place is ensured; the other end of the movable connector 130 is provided with a movable connector spring internal thread 1302, and one end of the spring 140 is screwed into the movable connector spring internal thread 1302 and ensures that the spring is screwed in place.

In this embodiment, one end of the limiting connector 120 is provided with a limiting connector spring internal thread 1201, and this end is screwed to the other end of the spring 140 and is guaranteed to be screwed in place; the other end of the limit connector 120 is provided with a limit connector cylindrical hollow 1202, and one end of the wire outlet end guide wire inner tube 80 is penetrated into the limit connector cylindrical hollow 1202 and is ensured to penetrate into place; the two sides of the cylindrical hollow 1202 of the limiting connecting piece are symmetrically provided with jackscrew screws 1203, which are used for fixing the limiting connecting piece 120 at one end of the wire guiding inner tube 80 at the wire outlet end, and ensuring that all jackscrew 1203 screws at two sides are screwed in, so that the outer surface of the limiting connecting piece 120 cannot be exposed.

In this embodiment, wrench grooves 1002 are symmetrically arranged in the middle of the outer surface of the guide wire connector 100, so that the guide wire connector can be conveniently screwed by using a wrench during installation; the outer surface of the guide wire connector 100 is also provided with a buckle limiting groove 1003 which is used for being matched and clamped with the guide wire connector limiting buckle 102, and simultaneously, the guide wire connector 100 can be limited to rotate along the axial direction and displace along the radial direction by matching the spanner groove 1002 with the guide wire connector limiting boss 103.

Referring to fig. 2 and 4, a buffer cover plate 20 is rotatably connected to the buffer housing 10, and the buffer cover plate 20 has an arc structure and is adapted to the shape of the buffer housing 10; the two ends of the guide wire connector are symmetrically provided with guide wire connector upper limit grooves 201 which are matched with the guide wire connector lower limit grooves 101 to limit the guide wire connector 100; clamping bosses 202 are arranged at two ends of the outer surface of the buffer cover plate 20, and an upper buffer space 203 matched with the lower buffer space 105 is arranged on the inner surface of the buffer cover plate for buffering the welding wire 150; a transparent observation window 204 is arranged in the middle of the buffer cover plate 20 and is used for observing the motion state of the inner welding wire 150; the top of the buffer cover plate 20 is provided with a turning shaft groove 205, so that the buffer cover plate 20 can be turned along the turning limiting shaft 104; the buffer cover 20 is provided with a clamping groove 206 at a position corresponding to the guide wire connector limiting buckle 102, and is used for being matched and clamped with the guide wire connector limiting buckle 102.

The bottom surface of the buffer shell 10 is provided with a buffer bottom plate 40, and the buffer bottom plate 40 is of an arc-shaped structure and is matched with the shape of the buffer shell 10; the two ends of the buffer bottom plate 40 are provided with turning buckles 401 corresponding to the clamping bosses 202, which are used for realizing clamping when the buffer cover plate 20 is closed; an angle sensor control line via hole 402 is provided on the underside of the punch plate 40 for the penetration of the angle sensor control line.

The bottom surface of the buffer bottom plate 40 is provided with a buffer bottom plate bracket 50, one side of the buffer bottom plate bracket 50 is provided with a mounting hole for mounting a control socket 501, and the control socket 501 can realize signal output of the angle sensor 30.

The structure of the embodiment connects the buffer of the welding wire 150 with the angle sensor 30, and changes the movement of the welding wire 150 into a controllable state under the action of the buffer swinging rod 60, thereby effectively solving the problems of bending or blocking of the welding wire 150 caused by asynchronous movement of the two welding wires 150 in the forward and backward movements; when the welding wire 150 advances, the buffer swinging rod 60 swings anticlockwise, the bending degree of the wire guide inner tube 70 at the wire feeding end is reduced, and the tension force of the spring 140 is reduced; when the welding wire 150 is drawn back, the buffer swinging rod 60 swings clockwise, the bending degree of the wire guide inner pipe 70 at the wire feeding end is increased, and the tension force of the spring 140 is increased; the device intuitively presents the movement of the welding wire 150 in an image form, is beneficial to a worker to follow up the welding condition in time, and realizes monitoring and coordination control on the movement of the welding wire 150.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims (10)

1. An apparatus for buffering welding wire, comprising: the buffer shell is arc-shaped, and a lower buffer space matched with the buffer shell in shape is arranged in the buffer shell; two ends of the lower buffer space are respectively provided with a wire inlet end and a wire outlet end, and the wire inlet end and the wire outlet end are respectively connected with a hollow wire guide connector; a limit connecting piece and a movable connecting piece are respectively arranged in the guide wire connector of the wire outlet end, and a spring is connected between the limit connecting piece and the movable connecting piece;

the inner wire guide pipe at the wire feeding end penetrates from the wire guide connector at the wire feeding end, extends into the wire guide connector at the wire discharging end along the lower buffer space, and is connected with the movable connecting piece; the wire outlet end guide wire inner tube penetrates from the wire outlet end guide wire connector and is connected with the limit connecting piece.

2. The device for buffering welding wires according to claim 1, wherein a through hole is formed in the lower buffering space, an angle sensor is fixed on the lower surface of the buffering shell, a pin shaft of the angle sensor penetrates through the through hole and is connected with one end of a buffering swinging rod, and the buffering swinging rod can swing within a set range by taking the pin shaft as a center; the buffering swinging rod is provided with a rectangular limiting groove, and the wire guide inner pipe at the wire feeding end penetrates through the rectangular limiting groove.

3. The apparatus for buffering welding wire according to claim 1, wherein the wire connector of the wire feeding end is connected to the wire outer tube of the wire feeding end through a connecting member, and the wire inner tube of the wire feeding end is fixed inside the wire outer tube of the wire feeding end.

4. The apparatus for buffering welding wire according to claim 1, wherein the wire connector of the wire outlet end is connected to the wire outer tube of the wire outlet end through a connecting member, and the wire inner tube of the wire outlet end is fixed inside the wire outer tube of the wire outlet end.

5. The device for buffering welding wires according to claim 1, wherein one end of the limiting connecting piece is connected with the spring through a spring internal thread, the other end of the limiting connecting piece is of a hollow structure, and the wire outlet end guide wire inner tube extends into the hollow structure; and jackscrew screws are symmetrically arranged on two sides of the hollow structure and used for connecting the limiting connecting piece with the wire guiding inner tube at the wire outlet end.

6. The device for buffering welding wires according to claim 1, wherein one end of the movable connecting piece opposite to the limiting connecting piece is connected with the spring through a spring internal thread, and the other end of the movable connecting piece is connected with the wire guide inner tube at the wire feeding end through a common internal thread; the movable connecting piece can move back and forth along with the movement of the inner tube of the guide wire at the wire feeding end, so as to drive the spring to stretch and retract.

7. The apparatus for buffering welding wire according to claim 1, wherein the spring inner diameter is the same as the inner diameters of the inner tube of the wire feeding end guide wire and the inner tube of the wire discharging end guide wire.

8. The device for buffering welding wires of claim 1, wherein the outer surface of the wire guide connector is symmetrically provided with a clamping limit groove, and the clamping limit groove can be clamped with a wire inlet and outlet end clamping buckle arranged on the buffering shell.

9. The apparatus for buffering welding wire of claim 1, further comprising: the buffer cover plate is matched with the shape of the buffer shell, and an upper buffer space matched with the lower buffer space is arranged in the buffer cover plate; one side of the buffer cover plate is rotatably connected with the buffer shell, and the other side of the buffer cover plate can be clamped by the turning-in and buckling cooperation of the clamping boss and the buffer bottom plate.

10. The apparatus for buffering welding wire according to claim 9, wherein a transparent viewing window is provided on the buffering cover plate for viewing a moving state of the inner welding wire.