Wire feeding device and submerged arc welding equipment
By designing a wire feeding device that can adjust the number of welding wire segments and the rotation of the wire feeding wheel, the problem that traditional welding wire plates cannot be adjusted is solved, continuous supply and flexible adjustment of welding wire is achieved, wire waste and equipment burden are reduced, welding efficiency and equipment performance are improved.
Patent Information
- Application Number
- CN202422070896.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-23
AI Technical Summary
Traditional wire disk designs do not allow wire length adjustment, resulting in wire waste and additional material costs.
A wire feeding device is designed, including a wire feeding box, a wire feeding baffle, a wire fender strip, a drive member and a wire feeding wheel. By adjusting the number of welding wire segments and the rotation of the wire feeding wheel, flexible adjustment and continuous supply of the welding wire length are achieved.
Reduce welding wire waste, reduce welding costs, improve welding efficiency and equipment movement performance, and ensure welding quality and normal operation of equipment.
Smart Images
Figure CN223129564U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding, and particularly relates to a wire feeding device and a submerged arc welding equipment. Background Art
[0002] Submerged arc welding is an efficient welding method and is widely used in industrial fields that require high current, large welding volume and high welding efficiency. In the related art, the wire feeding mechanism is generally directly installed on the welding torch, and the wire spool is usually assembled on the welding trolley to facilitate welding operations; while the traditional wire spool design usually does not allow the welding wire to be adjusted according to actual needs, resulting in the frequent use of unnecessary long welding wires during welding, causing waste of welding wires. When the welding wire reaches the end, due to insufficient length, the welding wire cannot be used continuously, resulting in additional material waste and increasing the cost of welding operations. Summary of the Utility Model
[0003] The main purpose of the utility model is to propose a wire feeding device and a submerged arc welding equipment, aiming to provide a wire feeding device that can adjust the length of the welding wire by selecting the number of loaded wire segments according to the actual needs of welding.
[0004] To achieve the above purpose, the wire feeding device proposed by the utility model is used to supply welding wire to the submerged arc welding equipment. The wire feeding device includes:
[0005] A mounting seat;
[0006] A wire feeding mechanism, which includes a wire feeding box, a wire feeding baffle, a wire blocking strip, a first driving member and a commutation block. The wire feeding box is provided with a cavity having an opening. The first driving member is arranged on the bottom wall of the cavity. The output end of the first driving member is connected to the wire feeding baffle. The wire feeding baffle is movably accommodated in the cavity. The wire blocking strip is movably passed through one side wall of the cavity and connected to the other side wall of the cavity. The commutation block is provided with a first wire feeding channel, and the first wire feeding channel is communicated with the opening of the cavity. The wire feeding box and the commutation block are both arranged on the mounting seat;
[0007] Multiple wire segments, both ends of each wire segment are provided with bayonets facing opposite directions, and the multiple wire segments are sequentially accommodated in the cavity and located between the wire feeding baffle and the wire blocking strip;
[0008] At least two wire feeding wheels, the two wire feeding wheels are rotatably arranged on the mounting seat, and a second wire feeding channel is formed between the two wire feeding wheels. The second wire feeding channel is communicated with the first wire feeding channel and is located on the same straight line; and
[0009] A second driving member, the output end of the second driving member is in transmission connection with one of the wire feeding wheels.
[0010] In one embodiment, the first driving member is an elastic member, and two ends of the elastic member are respectively connected to the bottom wall of the cavity and the wire feeding baffle.
[0011] In one embodiment, the first driving member is a cylinder, the cylinder includes a cylinder body and a piston rod connected to each other, the cylinder body is disposed on the bottom wall of the cavity, and the piston rod is connected to the wire feeding baffle.
[0012] In one embodiment, through holes and positioning grooves are respectively formed in two opposite side walls of the cavity, the positioning grooves are arranged corresponding to the through holes, and the wire blocking strip can movably pass through the through holes and be clamped in the positioning grooves.
[0013] In one embodiment, the bayonet is L-shaped, and the bayonets of any two adjacent wire segments can be clamped with each other.
[0014] In one embodiment, the wire feeding mechanism includes a guide rail and a slider in sliding fit, the guide rail is disposed in the cavity along the length direction of the wire feeding box, two ends of the guide rail are respectively connected to two opposite side walls of the cavity, and the slider is disposed on the wire feeding baffle.
[0015] In one embodiment, the wire feeding device includes a mounting box, the mounting box is disposed on the mounting seat, the mounting box is provided with a receiving groove having a notch, a sliding groove is formed in one side wall of the receiving groove, the wire feeding box is received in the receiving groove, the commutation block is detachably connected to the mounting box, and the notch of the receiving groove is communicated with the first wire feeding channel.
[0016] In one embodiment, the wire feeding device includes a transmission assembly and four wire feeding wheels, every two wire feeding wheels form a wheel set, the two wheel sets are arranged at intervals along the height direction of the mounting seat, and a second wire feeding channel is formed between the two wire feeding wheels of each wheel set; the transmission assembly includes a transmission belt and two transmission wheels, the two transmission wheels are respectively sleeved on one wire feeding wheel of the two wheel sets, the transmission belt is sleeved on the two transmission wheels, and the output end of the second driving member is connected to one of the transmission wheels.
[0017] The present utility model further provides a submerged arc welding device, including:
[0018] A welding trolley body;
[0019] The wire feeding device in any of the above embodiments, the wire feeding device is disposed on the welding trolley body;
[0020] A conducting nozzle, the conducting nozzle is provided with a third wire feeding channel, and the conducting nozzle is used for supplying power to the wire segment; and
[0021] A welding torch, the welding torch is provided with a fourth wire feeding channel, and the welding torch is used to maintain and stabilize the formation and combustion of the electric arc of the wire segment.
[0022] In one embodiment, the submerged arc welding equipment further includes a detection device, the detection device includes an overload protection switch, a DC power supply, a fixed value resistor and an ammeter, the overload protection switch, the DC power supply, the fixed value resistor and the ammeter are connected in series in sequence, the overload protection switch is electrically connected to the conducting nozzle, and the ammeter is electrically connected to the workpiece to be welded.
[0023] In the technical solution of the present invention, before the wire feeding operation, first control the first driving member to drive the wire feeding baffle to move close to the bottom wall of the cavity, place a plurality of wire segments into the cavity through the cavity opening of the cavity in sequence according to the actual welding requirements, and then pass the wire blocking strip through one side wall of the cavity and connect it to the other side wall of the cavity to prevent the wire segments in the cavity from falling out through the cavity opening; when starting the wire feeding operation, first pull out the wire blocking strip, control the first driving member to drive the wire feeding baffle to move away from the bottom wall of the cavity to push a plurality of wire segments to move close to the cavity opening, when the first wire segment enters the first wire feeding channel through the cavity opening, insert the wire blocking strip into the first wire feeding channel to gradually push out the first wire segment in the first wire feeding channel and enter the second wire feeding channel. During the insertion of the wire blocking strip, the second wire segment is pushed into the first wire feeding channel by the first driving member and the wire feeding baffle, and the bayonet at the tail end of the first wire segment is clamped with the bayonet at the head end of the second wire segment to realize the connection between the first wire segment and the second wire segment. Moreover, when the first wire segment enters the second wire feeding channel (i.e., between the two wire feeding wheels) under the pushing action of the wire blocking strip, the second driving member drives one wire feeding wheel to rotate, driving the first wire segment to move away from the first wire feeding channel, and the bayonet connection between the first wire segment and the second wire segment is further clamped under the extrusion of the two wire feeding wheels, so that the front and rear wires are tightly connected. Driven by the two wire feeding wheels, and pushed by the first driving member and the wire feeding baffle, the subsequent multiple wire segments are sent out in sequence to complete the wire feeding operation; this device can select the number of wire segments to be loaded according to the actual welding requirements, thereby realizing the adjustment of the wire length, without causing waste of wire, ensuring continuous wire feeding, and can also flexibly adjust the number of wire segments according to the required wire length to reduce the burden on the welding trolley; in order to ensure the welding quality and the normal operation of the submerged arc welding equipment, the wire needs to retract a certain distance during wire supply, and the retraction of the wire is realized by driving the wire feeding wheel to rotate in reverse by the second driving member, and the elongation of the wire is realized by driving the wire feeding wheel to rotate forward by the second driving member. Description of the Drawings
[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.
[0025] Figure 1 It is a cross-sectional view of an embodiment of the wire feeding mechanism provided by the present invention;
[0026] Figure 2 For Figure 1 The partial enlarged view at position A in
[0027] Figure 3 It is a front view of an embodiment of the welding wire segment provided by the present invention;
[0028] Figure 4 It is a front view of an embodiment of the wire feeding device provided by the present invention;
[0029] Figure 5 It is a top view of an embodiment of the wire feeding device provided by the present invention.
[0030] Explanation of the reference numerals in the drawings:
[0031] 100, wire feeding device; 1, wire feeding mechanism; 11, wire feeding box; 111, cavity; 112, positioning groove; 12, wire feeding baffle; 13, wire blocking strip; 14, first driving member; 15, commutation block; 151, first wire feeding channel; 2, welding wire segment; 21, bayonet; 3, wire feeding wheel; 31, second wire feeding channel; 4, second driving member; 5, guide rail; 6, mounting box; 61, accommodation groove; 62, sliding groove;
[0032] 200, conductive nozzle; 300, welding torch; 400, detection device; 410, overload protection switch; 420, DC power supply; 430, fixed value resistor; 440, ammeter; 500, workpiece to be welded.
[0033] The realization of the purpose, functional characteristics and advantages of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments
[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0035] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0036] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.
[0037] The present utility model provides a wire feeding device 100.
[0038] Please refer to Figures 1 to 5 , in an embodiment of the present utility model, the wire feeding device 100 is used to supply welding wires to a submerged arc welding device. The wire feeding device 100 includes a mounting base, a wire feeding mechanism 1, a plurality of wire segments 2, at least two wire feeding wheels 3, and a second driving member 4. The wire feeding mechanism 1 includes a wire feeding box 11, a wire feeding baffle 12, a wire blocking strip 13, a first driving member 14, and a commutation block 15. The wire feeding box 11 is provided with a cavity 111 having a cavity opening. The first driving member 14 is disposed on the bottom wall of the cavity 111. The output end of the first driving member 14 is connected to the wire feeding baffle 12. The wire feeding baffle 12 is movably accommodated in the cavity 111. The wire blocking strip 13 is movably passed through one side wall of the cavity 111 and connected to the other side wall of the cavity 111. The commutation block 15 is provided with a first wire feeding channel 151. The first wire feeding channel 151 is communicated with the cavity opening of the cavity 111. The wire feeding box 11 and the commutation block 15 are both disposed on the mounting base; both ends of each wire segment 2 are provided with bayonets 21 facing in opposite directions. A plurality of wire segments 2 are sequentially accommodated in the cavity 111 and are located between the wire feeding baffle 12 and the wire blocking strip 13; two wire feeding wheels 3 are rotatably disposed on the mounting base. A second wire feeding channel 31 is formed between the two wire feeding wheels 3. The second wire feeding channel 31 is communicated with the first wire feeding channel 151 and is located on the same straight line; the output end of the second driving member 4 is in transmission connection with one of the wire feeding wheels 3.
[0039] In the technical solution of the present utility model, before the wire feeding operation, first control the first driving member 14 to drive the wire feeding baffle 12 to move close to the bottom wall of the cavity 111, place a plurality of wire segments 2 into the cavity 111 through the orifice of the cavity 111 in sequence according to the actual welding requirements, and then pass the wire blocking strip 13 through one side wall of the cavity 111 and connect it to the other side wall of the cavity 111 to prevent the wire segments 2 in the cavity 111 from falling out through the orifice of the cavity 111; when starting the wire feeding operation, first pull out the wire blocking strip 13, control the first driving member 14 to drive the wire feeding baffle 12 to move away from the bottom wall of the cavity 111, so as to push a plurality of wire segments 2 to move close to the orifice of the cavity 111. When the first wire segment 2 enters the first wire feeding channel 151 through the orifice of the cavity 111, insert the wire blocking strip 13 into the first wire feeding channel 151 to gradually push out the first wire segment 2 in the first wire feeding channel 151 and enter the second wire feeding channel 31. During the insertion of the wire blocking strip 13, the second wire segment 2 is pushed into the first wire feeding channel 151 by the first driving member 14 and the wire feeding baffle 12. The bayonet 21 at the tail end of the first wire segment 2 is clamped with the bayonet 21 at the head end of the second wire segment 2 to realize the connection between the first wire segment 2 and the second wire segment 2. And when the first wire segment 2 enters the second wire feeding channel 31 (i.e., between the two wire feeding wheels 3) under the pushing action of the wire blocking strip 13, the second driving member 4 drives one wire feeding wheel 3 to rotate, driving the first wire segment 2 to move away from the first wire feeding channel 151. And the connection part of the bayonets 21 of the first wire segment 2 and the second wire segment 2 is further clamped tightly under the extrusion of the two wire feeding wheels 3, so that the front and rear wires are tightly connected. Driven by the two wire feeding wheels 3, and pushed by the first driving member 14 and the wire feeding baffle 12, the subsequent plurality of wire segments 2 are sent out in sequence to complete the wire feeding operation; this device can select the number of wire segments 2 to be loaded according to the actual welding requirements, thereby realizing the adjustment of the wire length, without causing waste of wire, ensuring continuous wire feeding, and can also flexibly adjust the number of wire segments 2 according to the required wire length to reduce the burden of the welding trolley; in order to ensure the welding quality and the normal operation of the submerged arc welding equipment, the wire needs to retract a certain distance during wire supply. The retraction of the wire is realized by the second driving member 4 driving the wire feeding wheel 3 to rotate in reverse, and the elongation of the wire is realized by the second driving member 4 driving the wire feeding wheel 3 to rotate forward; the first driving member 14 can be a spring or a cylinder, and the present utility model does not limit this; the second driving member 4 can be a servo motor or a stepper motor, and the present utility model does not limit this; the shape of the bayonet 21 can be L-shaped or U-shaped, and the present utility model does not limit this; the number of wire feeding wheels 3 can be two or four, and the present utility model does not limit this.
[0040] Specifically, please refer to Figure 1, in an embodiment of the present utility model, the first driving member 14 is an elastic member, and two ends of the elastic member are respectively connected to the bottom wall of the cavity 111 and the wire feeding baffle 12. When loading the wire segment 2, it pushes the wire feeding baffle 12 close to the bottom wall of the cavity 111. After loading the wire segment 2, the wire blocking strip 13 is passed through one side wall of the cavity 111 and connected to the other side wall of the cavity 111 to prevent the wire segment 2 in the cavity 111 from falling out through the orifice of the cavity 111. At this time, the elastic member is in a compressed state; when performing wire feeding operation, the wire blocking strip 13 is pulled out, and under the elastic force of the elastic member, the wire feeding baffle 12 is pushed to move close to the orifice of the cavity 111, so that a plurality of wire segments 2 are sequentially pushed out of the cavity 111 into the first wire feeding channel 151 to achieve wire feeding; using the elastic member can not only greatly reduce the production cost of the wire feeding device 100, but also reduce the weight of the wire feeding device 100, thereby reducing the burden on the welding trolley and improving the movement performance and accuracy of the welding trolley.
[0041] In another embodiment of the present utility model, the first driving member 14 is a cylinder, and the cylinder includes a cylinder body and a piston rod connected to each other. The cylinder body is arranged on the bottom wall of the cavity 111, and the piston rod is connected to the wire feeding baffle 12. When loading the wire segment 2, the cylinder body drives the piston rod to move close to the bottom wall of the cavity 111, so that the wire feeding baffle 12 is close to the bottom wall of the cavity 111. After loading the wire segment 2, the wire blocking strip 13 is passed through one side wall of the cavity 111 and connected to the other side wall of the cavity 111 to prevent the wire segment 2 in the cavity 111 from falling out through the orifice of the cavity 111; when performing wire feeding operation, the cylinder body drives the piston rod to move close to the orifice of the cavity 111, so that a plurality of wire segments 2 are sequentially pushed out of the cavity 111 into the first wire feeding channel 151 to achieve wire feeding; using the cylinder to drive the wire feeding baffle 12 can make the force for pushing the wire segment 2 more uniform, and the pushing force will not decrease due to the increase of the pushing distance, and it is more convenient for loading the wire segment 2.
[0042] More specifically, please refer to Figure 1 and Figure 2 , in an embodiment of the present utility model, through holes and positioning grooves 112 are respectively formed on two opposite side walls of the cavity 111, the positioning grooves 112 are arranged corresponding to the through holes, and the wire blocking strip 13 can movably pass through the through holes and be clamped in the positioning grooves 112. The arrangement of the through holes and the positioning grooves 112 can enable the wire blocking strip 13 to pass through the through holes and be clamped in the positioning grooves 112 to realize the fixation of the wire blocking strip 13, thereby blocking the wire segment 2 in the cavity 111 from falling out through the orifice of the cavity 111 and improving the reliability and stability of the wire feeding operation.
[0043] Please refer to Figure 3, in an embodiment of the present utility model, the bayonet 21 is L-shaped, and any two adjacent wire segments 2 - one bayonet 21 can be snap-connected to another bayonet 21. The L-shaped bayonet 21 can provide better mechanical interlock to ensure that the wire segment 2 will not become loose during the conveying process and maintain the stability of the connection; the L-shaped bayonet 21 allows the wire segment 2 to achieve a smooth transition during the conveying process, ensuring the continuous conveying of the wire and reducing interruptions during the welding process; the design of the L-shaped bayonet 21 simplifies the loading and connection process of the wire, making the operation more convenient and fast; the design of the L-shaped bayonet 21 can also prevent the wire segment 2 from being misaligned or twisted during the conveying process.
[0044] Please refer to Figure 1 , in an embodiment of the present utility model, the wire feeding mechanism 1 includes a guide rail 5 and a slider that are slidably engaged. The guide rail 5 is disposed in the cavity 111 along the length direction of the wire feeding box 11. Both ends of the guide rail 5 are connected to the opposite side walls of the cavity 111, and the slider is disposed on the wire feeding baffle 12. The cooperation between the guide rail 5 and the slider can provide precise linear motion control for the wire feeding baffle 12 to ensure the stability and accuracy of the wire feeding process; the slider sliding on the guide rail 5 can effectively limit the swing and vibration of the wire segment 2 during the wire feeding process, thereby improving the stability and reliability of the wire feeding process; the guide rail 5 can ensure that the slider moves along a predetermined path and reduce the wire feeding error caused by the slider deviating from the track; the conveying component can include one guide rail 5 and one slider that are slidably engaged, or can include two guide rails 5 and two sliders that are slidably engaged. The present utility model does not limit this.
[0045] Please refer to Figure 4 and Figure 5 , in an embodiment of the present utility model, the wire feeding device 100 includes an installation box 6. The installation box 6 is disposed on the installation seat. The installation box 6 is provided with a cavity 61 having a notch. A chute 62 is provided on one side wall of the cavity 61. The wire feeding box 11 is accommodated in the cavity 61. The commutation block 15 is detachably connected to the installation box 6, and the notch of the cavity 61 is communicated with the first wire feeding channel 151. The installation box 6 is connected to the installation base. When it is necessary to replace and disassemble the wire feeding box 11, the guiding block is detached from the installation box 6, the wire feeding box 11 loaded with the wire segment 2 is installed in the installation box 6, and then the guiding block is connected to the installation box 6; the chute 62 is provided to avoid the wire blocking strip 13 and can also prevent the wire feeding box 11 from being installed in the wrong direction, providing a hint for the installation direction for the user; the commutation block 15 is detachably connected to the installation box 6, which can be a snap connection and a slot connection, or can be connected through a quick connector. The present utility model does not limit this.
[0046] Please refer to Figure 4, in an embodiment of the present utility model, the wire feeding device 100 includes a transmission assembly and four wire feeding wheels 3. Every two wire feeding wheels 3 form a wheel set, and the two wheel sets are arranged at intervals along the height direction of the mounting base. A second wire feeding channel 31 is formed between the two wire feeding wheels 3 of each wheel set; the transmission assembly includes a transmission belt and two transmission wheels. The two transmission wheels are respectively sleeved on a wire feeding wheel 3 of the two wheel sets, the transmission belt is sleeved on the two transmission wheels, and the output end of the second driving member 4 is connected to one of the transmission wheels. The setting of the transmission assembly can ensure that one wire feeding wheel 3 in each wheel set rotates synchronously. The setting of the four wire feeding wheels 3 enables the wire segment 2 to be evenly stressed, which is not only beneficial to the smoothness of wire feeding, but also beneficial to the combination of the front and rear wire segments 2, thereby reducing the possible fluctuations or jamming phenomena of the wire segment 2 during the supply process and improving the stability of wire supply.
[0047] The present utility model also proposes a submerged arc welding device, which includes a welding trolley body, a wire feeding device 100, a conductive nozzle 200 and a welding torch 300. The specific structure of the wire feeding device 100 refers to the above-mentioned embodiment. Since this submerged arc welding device adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated here one by one. Among them, the wire feeding device 100 is arranged on the welding trolley body; the conductive nozzle 200 is provided with a third wire feeding channel, and the conductive nozzle 200 is used to supply power to the wire segment 2; the welding torch 300 is provided with a fourth wire feeding channel, and the welding torch 300 is used to maintain and stabilize the formation and combustion of the arc of the wire segment 2. The wire feeding device 100 controls the connected wire segment 2 to extend into the third wire feeding channel of the conductive nozzle 200 and the fourth wire feeding channel of the welding torch 300, conveys the wire to the welding area, and contacts the power supply for arc welding to realize the welding of the workpiece to be welded 500; the welding trolley body provides a moving platform and stable support for the device; the wire feeding device 100 is responsible for feeding the wire segment 2 into the welding area to ensure the continuous supply of welding materials; the conductive nozzle 200 is responsible for transmitting current to the wire segment 2 and guiding the wire through the third wire feeding channel; the welding torch 300 maintains and stabilizes the formation and combustion of the welding arc and further guides the wire to extend through the fourth wire feeding channel.
[0048] Please refer to Figure 4, in an embodiment of the present utility model, the submerged arc welding device further includes a detection device 400. The detection device 400 includes an overload protection switch 410, a DC power supply 420, a fixed-value resistor 430, and an ammeter 440. The overload protection switch 410, the DC power supply 420, the fixed-value resistor 430, and the ammeter 440 are connected in series in sequence. The overload protection switch 410 is electrically connected to the welding tip 200, and the ammeter 440 is electrically connected to the workpiece to be welded 500. When the welding wire is not in contact with the workpiece to be welded 500, the current in the circuit of the detection device 400 is small and can be ignored, and the resistance approaches infinity; when the welding wire is in contact with the workpiece to be welded 500, the resistance between the welding wire and the workpiece to be welded 500 decreases sharply, and the reading of the ammeter 440 rises rapidly and stabilizes at a reading. Let the reading of the ammeter 440 after stabilization be I, the resistance value of the fixed-value resistor 430 be R, the voltage of the DC power supply 420 be U, and the short-circuit current for detecting the contact between the welding wire and the workpiece to be welded 500 be I d , take k ∈ (0.95, 1.05), then I ≈ U / R, I = kI d , if the reading I d meets the above magnitude, it can be determined that the welding wire is in contact with the workpiece to be welded 500; if the reading I d does not meet the above magnitude, the possible reasons are as follows: the welding flux is not dry enough, there are foreign objects sticking to the surface of the welding wire or the workpiece to be welded, there are conductive foreign objects in the welding flux, etc.; and when the reading does not meet the above magnitude and the resistance of the welding wire feeding reaches the set threshold, the second driving member 4 receives the signal of the detection device 400 and will stop driving the wire feeding wheel 3 and report an abnormality to the device to stop wire feeding; in another embodiment of the present utility model, one end of the detection device 400 is connected to the cavity opening of the wire feeding box 11, and the other end is connected to the wire inlet of the welding torch 300. The current of this section of the welding wire is measured, and after obtaining the total resistance using Ohm's law and subtracting the resistance value of the fixed-value resistor 430, the resistance of this section of the welding wire can be obtained to realize the detection of the situation of the front and rear sections of the welding wire 2; by adding the detection device 400 to the submerged arc welding device, the current state during the welding process can be effectively monitored and protected, and the setting of the detection device 400 provides a protection function for the device.
[0049] The above is only an exemplary embodiment of the present utility model, and it does not limit the patent scope of the present utility model accordingly. All equivalent structural transformations made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present utility model.
Claims
1. A wire feeding device for supplying a welding wire to a submerged arc welding apparatus, characterized in that, The wire feeding device includes: A mounting base; A wire feeding mechanism, which includes a wire feeding box, a wire feeding baffle, a wire blocking strip, a first driving member, and a commutation block. The wire feeding box is provided with a cavity having an opening. The first driving member is arranged on the bottom wall of the cavity. The output end of the first driving member is connected to the wire feeding baffle. The wire feeding baffle is movably accommodated in the cavity. The wire blocking strip is movably passed through one side wall of the cavity and connected to the other side wall of the cavity. The commutation block is provided with a first wire feeding channel, and the first wire feeding channel is communicated with the opening of the cavity. The wire feeding box and the commutation block are both arranged on the mounting base; A plurality of wire segments, and each end of each wire segment is provided with bayonets facing in opposite directions. The plurality of wire segments are sequentially accommodated in the cavity and located between the wire feeding baffle and the wire blocking strip; At least two wire feeding wheels, and the two wire feeding wheels are rotatably arranged on the mounting base. A second wire feeding channel is formed between the two wire feeding wheels. The second wire feeding channel is communicated with the first wire feeding channel and is located on the same straight line; and A second driving member, and the output end of the second driving member is in transmission connection with one of the wire feeding wheels.
2. The wire feeding device according to claim 1, characterized in that, The first driving member is an elastic member, and the two ends of the elastic member are respectively connected to the bottom wall of the cavity and the wire feeding baffle.
3. The wire feeding device according to claim 1, characterized in that, The first driving member is a cylinder, and the cylinder includes a cylinder body and a piston rod connected to each other. The cylinder body is arranged on the bottom wall of the cavity, and the piston rod is connected to the wire feeding baffle.
4. The wire feeding device according to claim 1, characterized in that Through holes and positioning grooves are respectively formed on the opposite side walls of the cavity. The positioning groove corresponds to the through hole. The wire blocking strip can movably pass through the through hole and be clamped in the positioning groove.
5. The wire feeding device according to claim 1, characterized in that, The bayonet is L-shaped, and one bayonet of any two adjacent wire segments can be clamped with the other bayonet.
6. The wire feeding device according to any one of claims 1 to 5, characterized in that, The wire feeding mechanism includes a guide rail and a slider in sliding fit. The guide rail is arranged in the cavity along the length direction of the wire feeding box. The two ends of the guide rail are respectively connected to the opposite side walls of the cavity, and the slider is arranged on the wire feeding baffle.
7. The wire feeding device according to any one of claims 1 to 5, characterized in that, The wire feeding device includes a mounting box, and the mounting box is arranged on the mounting base. The mounting box is provided with a cavity having a notch. A sliding groove is formed on one side wall of the cavity. The wire feeding box is accommodated in the cavity. The commutation block is detachably connected to the mounting box, and the notch of the cavity is communicated with the first wire feeding channel.
8. The wire feeding device according to any one of claims 1 to 5, characterized in that, The wire feeding device includes a transmission assembly and four wire feeding wheels. Every two wire feeding wheels form a wheel set, and the two wheel sets are arranged at intervals along the height direction of the mounting base. A second wire feeding channel is formed between the two wire feeding wheels of each wheel set; the transmission assembly includes a transmission belt and two transmission wheels. The two transmission wheels are respectively sleeved on one wire feeding wheel of the two wheel sets, the transmission belt is sleeved on the two transmission wheels, and the output end of the second driving member is connected to one of the transmission wheels.
9. An automatic submerged arc welding equipment, characterized in that Including: A welding trolley body; The wire feeding device according to any one of claims 1 to 8, and the wire feeding device is arranged on the welding trolley body; A contact tip, and the contact tip is provided with a third wire feeding channel. The contact tip is used for supplying power to the wire segments; And A welding torch, the welding torch is provided with a fourth wire feeding channel, and the welding torch is used to maintain and stabilize the formation and combustion of the arc of the wire segment.
10. The submerged arc welding equipment according to claim 9, characterized in that, The submerged arc welding equipment further includes a detection device, the detection device includes an overload protection switch, a DC power supply, a fixed value resistor and an ammeter, the overload protection switch, the DC power supply, the fixed value resistor and the ammeter are connected in series in sequence, the overload protection switch is electrically connected to the contact tip, and the ammeter is electrically connected to the workpiece to be welded.