Welding wire clamping device
By designing the wire clamping device, using structures such as adjustment sliders, limit rollers and gas through grooves, the problem of welding wire retraction in high-precision welding is solved, and the stability of the outer end length of the welding wire and the welding accuracy are improved.
Patent Information
- Application Number
- CN202420843501.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-23
AI Technical Summary
During high-precision welding, the welding wire is prone to retract, and the clamping device in the prior art is troublesome to operate, making it difficult to keep the outer end length of the welding wire within an appropriate range, affecting the welding accuracy.
A welding wire clamping device including a welding gun body, a welding wire conveying chamber, an adjustment slider, a limit roller, a piston, a return spring and an auxiliary clamping device are designed, and the welding wire is fixed and clamped through the groove and the sealing ring. Ensure that the wire does not retract during transportation.
The welding wire position is fixed during high-precision welding, avoiding retraction, and keeping the outer end length of the welding wire within an appropriate range, improving welding accuracy and working efficiency.
Smart Images
Figure CN222221413U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of welding wire clamping equipment, in particular to a welding wire clamping device. Background Art
[0002] Industrially manufactured welding robots are the most widely used type of industrial robots, accounting for about 40% to 60% of the total number of robots used in various countries, and have huge market demand. For welding robots, especially arc welding robots, they must not only have general linear and circular motion functions in welding operations, but also swing arc welding functions. Existing robot control systems have linear function, diagonal function, and circular arc swing arc welding modes, and can adjust the swing frequency amplitude and stop time, etc.
[0003] In the actual welding process, the weld inclination angle, weld rotation angle, welding gun working angle and welding gun walking angle affect the quality of weld formation. Among them, the weld inclination angle and weld rotation angle determine the position of the weld in space. The welding gun working angle and welding gun walking angle determine the welding gun posture during welding. In some cases, such as when there is unequal thickness between the welding workpieces, it is necessary to change the welding gun working angle to make the coal gun close to the plate-thick coal piece, so that the contact area between the thick coal piece and the molten pool is increased; in addition, according to the actual welding situation, it is sometimes necessary to adjust the welding gun walking angle, that is, the welding gun is required to form a forward tilt angle with the weld normal plane, and the thickness and width of the weld formed by tilting the welding gun forward or backward during the coal connection process are changed.
[0004] During high-precision welding, the corresponding welding gun posture should be maintained, and the phenomenon of welding wire retraction should be reduced, thereby affecting the welding progress. The conveying of welding wire is achieved by the wire feeding device in the welding robot. In the prior art, the way to prevent the welding wire from retracting during high-precision welding is to use a clamping device to fix the position of the welding wire. During the process of the clamping device fixing the position of the welding wire, the wire feeding device stops conveying the welding wire. When the area that requires high-precision welding is large, the welding wire used for welding consumes the preset length, and the corresponding clamping device is required to release the welding wire. The wire feeding device feeds the welding wire until the outer end of the welding wire reaches the preset position, and the clamping device clamps the welding wire again. After the clamping device clamps the welding wire, the wire feeding device stops conveying the welding wire, which is too troublesome to operate. Therefore, when the area of high-precision welding is larger and the need to maintain high-precision welding process increases, there is room for improvement in the existing technology, so that the wire feeding device can be used to continue to feed the welding wire to make up for the consumption of the welding wire while maintaining the consumption of the outer end of the welding wire, and the welding wire can be kept from retracting during the transportation process, so that the protruding length of the outer end of the welding wire is always maintained within an appropriate range during the high-precision welding process, thereby further improving the welding accuracy. Summary of the invention
[0005] In view of the deficiencies in the prior art, the utility model provides a welding wire clamping device which can fix the position of the welding wire during the welding wire conveying process to prevent the welding wire from retracting, so as to overcome the defects in the prior art.
[0006] The technical scheme adopted by the utility model is as follows: a welding wire clamping device comprises a welding gun body, a welding wire feeding chamber is arranged in the welding gun body, a mounting groove is arranged on the welding gun body above the welding wire feeding chamber, an adjusting slide block is arranged in the mounting groove, a first limiting roller is arranged on one end of the adjusting slide block close to the welding wire feeding chamber, an adjusting rod is arranged on the one end of the adjusting slide block away from the welding wire feeding chamber, a piston is arranged on the adjusting rod, a first sealing ring is arranged between the piston and the mounting groove, a reset spring is arranged between the piston and the adjusting slide block, a limiting tube is arranged on the top end of the adjusting rod, a positioning cap is arranged on the top end of the limiting tube, the positioning cap and the mounting groove are threadedly connected, a first gas passing groove is arranged on the positioning cap, a gas conveying chamber is arranged on the welding gun body on one side of the first gas passing groove, the height of the gas conveying chamber is less than the height of the first gas passing groove, the first gas passing groove adopts a fan-shaped groove structure, a positioning cap below the first gas passing groove is provided with a gas passing hole, an auxiliary clamping device is arranged on the welding gun body below the mounting groove, and the auxiliary clamping device comprises a second limiting roller.
[0007] Preferably, the auxiliary clamping device further comprises a fixed slider disposed on the second limiting roller, a fixed bolt disposed on one end of the fixed slider away from the second limiting roller, and a fixed rod disposed on the fixed bolt and the fixed slider.
[0008] Preferably, a second gas passing groove is provided on the positioning cap on the side of the first gas passing groove away from the gas delivery chamber, and the number of gas passing holes is several, and the several gas passing holes are distributed on the positioning cap along the extension direction of the second gas passing groove, the mounting groove between the piston and the positioning cap and the second gas passing groove are connected through the gas passing hole below the second gas passing groove, and the mounting groove between the piston and the positioning cap and the first gas passing groove are connected through the gas passing hole below the first gas passing groove.
[0009] Preferably, the positioning cap and the fixed slider both adopt a stepped cylindrical structure, and a second sealing ring is respectively provided between the large end of the fixed slider and the welding gun body and between the large end of the positioning cap and the welding gun body.
[0010] Preferably, a first positioning groove is provided on the end of the adjusting slider close to the adjusting rod, a second positioning groove is provided on the end of the fixed slider close to the fixed rod, the bottom end of the adjusting rod abuts against the bottom of the first positioning groove, the top end of the fixed rod abuts against the bottom of the second positioning groove, and the cross-section of the bottom of the first positioning groove, the cross-section of the bottom of the second positioning groove, the cross-section of the end of the fixed rod close to the bottom of the second positioning groove, and the cross-section of the end of the adjusting rod close to the bottom of the first positioning groove all adopt an arc structure.
[0011] Preferably, a limit block is arranged in the installation groove between the return spring and the adjustment slider, the limit block and the installation groove are threadedly connected, a through hole is arranged on the limit block, and part of the adjustment rod is located in the through hole.
[0012] Preferably, the diameter of the second limiting roller and the diameter of the first limiting roller both gradually decrease and then gradually increase along the direction from one end of the first limiting roller to the other end of the first limiting roller.
[0013] The beneficial effects of the utility model are as follows: firstly, the utility model can continuously receive the welding wire delivered by the wire feeding device of the welding robot, and fix the position of the welding wire during the welding wire feeding process to avoid the welding wire from retracting, thereby maintaining the extended length of the outer end of the welding wire always within an appropriate range to meet the needs of high-precision welding.
[0014] Secondly, a limit block is arranged in the installation groove between the return spring and the adjusting slider described in the utility model. The limit block and the installation groove are threadedly connected. A through hole is arranged on the limit block. Part of the adjusting rod is located in the through hole. The installation of the limit block facilitates limiting the maximum movement position of the adjusting slider.
[0015] Finally, the auxiliary clamping device described in the utility model includes a second limiting roller, a fixed slider arranged on the second limiting roller, a fixing bolt arranged on the end of the fixed slider away from the second limiting roller, and a fixing rod arranged on the fixing bolt and the fixed slider; the number of the auxiliary clamping devices is at least two, and several of the auxiliary clamping devices are symmetrically distributed on both sides of the adjusting rod, so as to facilitate the use of the second limiting rollers in the several auxiliary clamping devices to perform corresponding clamping on the bottom of the welding wire.
[0016] The utility model has the advantages of simple structure, convenient operation, ingenious design, greatly improved working efficiency, good social and economic benefits, and is a product that is easy to promote and use. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the utility model.
[0018] Figure 2 for Figure 1 A partial enlarged schematic diagram of detail A.
[0019] Figure 3 It is a structural schematic diagram of the positioning cap of the utility model. DETAILED DESCRIPTION
[0020] like Figures 1 to 3 As shown, a welding wire clamping device comprises a welding gun body 1, a welding wire feeding chamber 2 is arranged in the welding gun body 1, a mounting groove 3 is arranged on the welding gun body 1 above the welding wire feeding chamber 2, an adjusting slider 4 is arranged in the mounting groove 3, a first limiting roller 5 is arranged on the end of the adjusting slider 4 close to the welding wire feeding chamber 2, an adjusting rod 6 is arranged on the end of the adjusting slider 4 away from the welding wire feeding chamber 2, a piston 7 is arranged on the adjusting rod 6, a first sealing ring 8 is arranged between the piston 7 and the mounting groove 3, a reset spring 9 is arranged between the piston 7 and the adjusting slider 4, a limiting tube 10 is arranged on the top end of the adjusting rod 6, a positioning cap 11 is arranged on the top end of the limiting tube 10, the positioning cap 11 is threadedly connected to the mounting groove 3, and the positioning A first gas passing groove 12 is arranged on the cap 11, a gas delivery chamber 13 is arranged on the welding gun body 1 on one side of the first gas passing groove 12, the height of the gas delivery chamber 13 is less than the height of the first gas passing groove 12, the first gas passing groove 12 adopts a fan-shaped groove structure, a gas passing hole 14 is arranged on the positioning cap 11 below the first gas passing groove 12, and an auxiliary clamping device is arranged on the welding gun body 1 below the mounting groove 3, the auxiliary clamping device comprises a second limiting roller 15, a fixed slider 16 arranged on the second limiting roller 15, a fixing bolt 17 arranged on one end of the fixed slider 16 away from the second limiting roller 15, and a fixing rod 18 arranged on the fixing bolt 17 and the fixed slider 16. The number of the auxiliary clamping devices is at least two, and a plurality of the auxiliary clamping devices are symmetrically distributed on both sides of the adjusting rod 6. The first limiting roller 5 adopts a rod-shaped structure that can rotate around the central axis of the first limiting roller 5. The structure of the second limiting roller 15 corresponds to the structure of the first limiting roller 5.
[0021] The diameter of the second limiting roller 15 and the diameter of the first limiting roller 5 both gradually decrease and then gradually increase along the direction from one end of the first limiting roller 5 to the other end of the first limiting roller 5. The side surfaces of the second limiting roller 15 and the first limiting roller 5 are provided with crisscross groove structures.
[0022] A second gas passing groove 19 is provided on the positioning cap 11 on the side of the first gas passing groove 12 away from the gas delivery chamber 13. The number of gas passing holes 14 is multiple, and the multiple gas passing holes 14 are distributed on the positioning cap 11 along the extension direction of the second gas passing groove 19. The mounting groove 3 between the piston 7 and the positioning cap 11 and the second gas passing groove 19 are connected through the gas passing hole 14 below the second gas passing groove 19, and the mounting groove 3 between the piston 7 and the positioning cap 11 and the first gas passing groove 12 are connected through the gas passing hole 14 below the first gas passing groove 12.
[0023] The positioning cap 11 and the fixed slider 16 both adopt a stepped cylindrical structure, and a second sealing ring 20 is respectively provided between the large end of the fixed slider 16 and the welding gun body 1 and between the large end of the positioning cap 11 and the welding gun body 1. A first scale line 25 and a second scale line 26 are provided on the large end of the positioning cap 11. When the top of the mounting groove 3 is located between the first scale line 25 and the second scale line 26, the gas delivery chamber 13 is located between the top surface of the first gas passage groove 12 and the bottom surface of the first gas passage groove 12. The first scale line 25 and the second scale line 26 are installed on the large end of the positioning cap 11 to facilitate indicating the position of the first gas passage groove 12.
[0024] A first positioning groove 21 is provided on the end of the adjusting slider 4 close to the adjusting rod 6, and a second positioning groove 22 is provided on the end of the fixed slider 16 close to the fixed rod 18. The bottom end of the adjusting rod 6 abuts against the bottom of the first positioning groove 21, and the top end of the fixed rod 18 abuts against the bottom of the second positioning groove 22. The cross-section of the bottom of the first positioning groove 21, the cross-section of the bottom of the second positioning groove 22, the cross-section of the end of the fixed rod 18 close to the bottom of the second positioning groove 22, and the cross-section of the end of the adjusting rod 6 close to the bottom of the first positioning groove 21 all adopt an arc structure.
[0025] A limit block 23 is arranged in the mounting groove 3 between the return spring 9 and the adjusting slider 4. The limit block 23 and the mounting groove 3 are threadedly connected. A through hole 24 is arranged on the limit block 23. Part of the adjusting rod 6 is located in the through hole 24. The installation of the limit block 23 facilitates limiting the maximum movement position of the adjusting slider 4.
[0026] The usage of this product is as follows: Figures 1 to 3 As shown, the following steps are included:
[0027] The wire feeding device of the welding robot feeds the welding wire and passes it through the wire delivery chamber 2 on the welding gun body 1 to maintain daily ordinary welding use. Before high-precision welding is required, first, tighten the positioning cap 11 until the top of the mounting slot 3 is between the first scale line 25 and the second scale line 26. At this time, the first gas passage slot 12 is adjacent to the gas delivery chamber 13, and the top end of the gas delivery chamber 13 and the bottom end of the gas delivery chamber 13 are both located between the top surface of the first gas passage slot 12 and the bottom surface of the first gas passage slot 12 to meet the state that the gas delivery chamber 13 and the first gas passage slot 12 are connected. Then the gas delivery chamber 13 receives the protective gas delivered by the external gas source, and delivers it to the first gas passage slot 12 and the second gas passage slot 19 through the gas delivery chamber 13, and then passes through the corresponding gas passage hole 1 4 is transported to the installation groove 3 between the positioning cap 11 and the piston 7, and the piston 7 is pushed to move toward the limit block 23 and drive the adjusting rod 6 to make corresponding movement. In this process, the reset spring 9 is positively compressed, and the adjusting rod 6 drives the adjusting slider 4 to move toward the welding wire feeding chamber 2 under the guiding relationship formed by the end of the adjusting rod 6 close to the bottom of the first positioning groove 21 and the bottom of the first positioning groove 21. At this time, the bottom of the welding wire passing through the first limit roller 5 and the second limit roller 15 is supported by the second limit rollers 15, and the top of the welding wire is resisted by the first limit roller 5, so that the welding wire is clamped by the first limit roller 5 and the second limit rollers 15. When the above operation is completed, the preparatory process of welding wire clamping before high-precision welding is completed.
[0028] In the formal high-precision welding process, while maintaining the normal conveying speed of the wire feeding device of the welding robot to compensate for the consumption of welding wire, the welding wire is clamped by the first limit roller 5 and several second limit rollers 15, thereby achieving the technical problem of excessive retraction of the welding wire caused by the welding wire being completely in the welding wire conveying chamber 2 in the prior art, and being able to continuously receive the welding wire delivered by the wire feeding device of the welding robot during the clamping process, so as to maintain the protruding length of the outer end of the welding wire always maintained in an appropriate range.
[0029] It should also be noted that, in a process that does not require high-precision welding, the wire feeding device of the welding robot sends out the welding wire. At this time, the gas delivery chamber 13 does not accept the shielding gas delivered by the external gas source. The welding wire is pressed against the welding wire, and the reset spring 9 is compressed in the reverse direction, so that the first limiting roller 5 and the welding wire are in contact with each other, thereby satisfying that when the gas delivery chamber 13 accepts the shielding gas delivered by the external gas source, the first limiting roller 5 can quickly clamp the corresponding part of the welding wire.
[0030] Through this embodiment, it is possible to continuously receive the welding wire delivered by the wire feeding device of the welding robot, and fix the position of the welding wire during the welding wire feeding process to prevent the welding wire from shrinking, thereby maintaining the extended length of the outer end of the welding wire in an appropriate range at all times to meet the needs of high-precision welding.
[0031] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.
Claims
1. A welding wire clamping device, comprising a welding gun body (1), wherein a welding wire conveying chamber (2) is arranged in the welding gun body (1), characterized in that: The welding gun body (1) is provided with a mounting groove (3) above the welding wire feeding chamber (2), an adjusting slider (4) is provided in the mounting groove (3), a first limiting roller (5) is provided on the end of the adjusting slider (4) close to the welding wire feeding chamber (2), an adjusting rod (6) is provided on the end of the adjusting slider (4) away from the welding wire feeding chamber (2), a piston (7) is provided on the adjusting rod (6), a first sealing ring (8) is provided between the piston (7) and the mounting groove (3), a return spring (9) is provided between the piston (7) and the adjusting slider (4), a limiting tube (10) is provided on the top end of the adjusting rod (6), and a A positioning cap (11) is threadedly connected to the mounting groove (3); a first gas passing groove (12) is provided on the positioning cap (11); a gas delivery chamber (13) is provided on the welding gun body (1) on one side of the first gas passing groove (12); the height of the gas delivery chamber (13) is less than the height of the first gas passing groove (12); the first gas passing groove (12) adopts a fan-shaped groove structure; a gas passing hole (14) is provided on the positioning cap (11) below the first gas passing groove (12); and an auxiliary clamping device is provided on the welding gun body (1) below the mounting groove (3); the auxiliary clamping device includes a second limiting roller (15).
2. The welding wire clamping device according to claim 1, characterized in that: The auxiliary clamping device further comprises a fixed slider (16) arranged on the second limiting roller (15), a fixed bolt (17) arranged on an end of the fixed slider (16) away from the second limiting roller (15), and a fixed rod (18) arranged on the fixed bolt (17) and the fixed slider (16).
3. The welding wire clamping device according to claim 2, characterized in that: A second gas passing groove (19) is provided on the positioning cap (11) on the side of the first gas passing groove (12) away from the gas delivery chamber (13), the number of gas passing holes (14) is a plurality, and the plurality of gas passing holes (14) are distributed on the positioning cap (11) along the extension direction of the second gas passing groove (19), the mounting groove (3) between the piston (7) and the positioning cap (11) and the second gas passing groove (19) are connected via the gas passing hole (14) below the second gas passing groove (19), and the mounting groove (3) between the piston (7) and the positioning cap (11) and the first gas passing groove (12) are connected via the gas passing hole (14) below the first gas passing groove (12).
4. The welding wire clamping device according to claim 2, characterized in that: The positioning cap (11) and the fixed slider (16) both adopt a stepped cylindrical structure, and a second sealing ring (20) is respectively provided between the large end of the fixed slider (16) and the welding gun body (1) and between the large end of the positioning cap (11) and the welding gun body (1).
5. The welding wire clamping device according to claim 2, characterized in that: The adjusting slider (4) is provided with a first positioning groove (21) on one end close to the adjusting rod (6), and the fixed slider (16) is provided with a second positioning groove (22) on one end close to the fixing rod (18). The bottom end of the adjusting rod (6) abuts against the bottom of the first positioning groove (21), and the top end of the fixing rod (18) abuts against the bottom of the second positioning groove (22). The cross-section of the bottom of the first positioning groove (21), the cross-section of the bottom of the second positioning groove (22), the cross-section of one end of the fixing rod (18) close to the bottom of the second positioning groove (22), and the cross-section of one end of the adjusting rod (6) close to the bottom of the first positioning groove (21) all have an arc structure.
6. The welding wire clamping device according to claim 1, characterized in that: A limit block (23) is arranged in the installation groove (3) between the return spring (9) and the adjustment slider (4), the limit block (23) and the installation groove (3) are threadedly connected, a through hole (24) is arranged on the limit block (23), and a part of the adjustment rod (6) is located in the through hole (24).
7. The welding wire clamping device according to claim 1, characterized in that: The diameter of the second limiting roller (15) and the diameter of the first limiting roller (5) both gradually decrease and then gradually increase along the direction from one end of the first limiting roller (5) to the other end of the first limiting roller (5).