Direct-current surfacing welding wire feeder

Abstract

The utility model relates to the technical field of wire feeders of welding equipment, and provides a direct current surfacing wire feeder which comprises a box body and two wire feeding wheel sets, and the two wire feeding wheel sets are both rotatably arranged in the box body. Each wire feeding wheel set is composed of a wire feeding wheel and an abutting wheel, the wire feeding wheels and the abutting wheels are distributed up and down, the abutting wheels can abut against the circumferential walls of the wire feeding wheels, and the wire feeding wheels and the abutting wheels are matched to form a channel used for clamping welding wires. An annular groove is formed in the circumferential wall of the wire feeding wheel in the circumferential direction, two elastic abutting plates are arranged in the annular groove in the axial direction in a sliding mode and symmetrically distributed in the annular groove, and a wire feeding cavity capable of abutting against the periphery of a welding wire is formed in the opposite sides of the two elastic abutting plates. The technical problems that in the prior art, a wire feeder needs to be shut down for wheel replacement, and production efficiency is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding equipment wire feeder technology field, specifically, it relates to direct current surfacing wire feeder. BACKGROUND

[0002] The existing direct current surfacing wire feeder in actual surfacing operation, the wire feeding wheel group of the wire feeding wheel peripheral wall is only provided with the fixed specification annular wire feeding groove, and the wire feeding groove can only match the welding wire of specific diameter. When the surfacing operation needs to switch the welding wire of different diameters, because the original wire feeding groove cannot adapt to the new diameter welding wire, it is necessary to stop the machine, disassemble the current wire feeding wheel and replace the special wire feeding wheel matched with the new welding wire diameter.

[0003] The existing wire feeder needs to stop the machine and replace the wheel, which causes the interruption of operation process, especially in the batch surfacing scene of multiple specifications of welding wire alternately used, frequent stoppage greatly prolongs the process cycle and reduces the production efficiency; and multiple sets of special wire feeding wheels need to be reserved for welding wires of different diameters, which increases the accessory procurement cost and inventory management resource investment. SUMMARY

[0004] In order to overcome the above defects, the embodiment of the utility model provides a direct current surfacing wire feeder, which solves the technical problem that the existing wire feeder needs to stop the machine and replace the wheel, and reduces the production efficiency.

[0005] According to one aspect, at least one embodiment of the utility model provides a direct current surfacing wire feeder for automatically conveying welding wire, comprising:

[0006] A box body;

[0007] A wire feeding wheel group, having two groups, both of which are rotationally arranged in the box body, each group of wire feeding wheel groups includes a wire feeding wheel and a pressing wheel, the wire feeding wheel and the pressing wheel are arranged above and below, and the pressing wheel can abut against the wire feeding wheel peripheral wall to form a channel for clamping welding wire together with the wire feeding wheel;

[0008] Among them, the wire feeding wheel peripheral wall is provided with an annular groove along the circumferential direction thereof, two elastic pressing plates are slidably arranged in the annular groove along the axial direction thereof, the two elastic pressing plates are symmetrically distributed in the annular groove, and the opposite sides of the two elastic pressing plates form a wire feeding cavity for abutting against the outer periphery of the welding wire, the elastic pressing plate is used for abutting against the peripheral wall of the welding wire when the welding wire is arranged in the wire feeding cavity, and the two elastic pressing plates can move away from or close to each other along the axial direction of the annular groove, so as to adjust the distance of the wire feeding cavity.

[0009] Optionally, the elastic pressing plate is annular, and a plurality of sliding grooves are formed in the elastic pressing plate along the radial direction thereof; the wire feeding wheel further comprises:

[0010] The first arc-shaped pads are circumferentially arranged in the wire feeding cavity, and each of the first arc-shaped pads corresponds to one of the sliding grooves and is in sliding connection with the sliding groove, the first arc-shaped pad can radially support the welding wire in the wire feeding cavity, so that the welding wire is in abutment with the circumferential wall of the pressing wheel, and a gap is formed between two adjacent first arc-shaped pads, and the gap provides a space for the two first arc-shaped pads to change the diameter when the first arc-shaped pads move radially along the sliding grooves.

[0011] Optionally, the wire feeding wheel further comprises a plurality of groups of filling pads, the number of the groups of filling pads is consistent with the number of the first arc-shaped pads on the same elastic pressing plate, and the groups of filling pads are circumferentially arranged and radially slidably arranged at the groove bottom of the annular groove.

[0012] When the two first arc-shaped pads move away from each other, an annular cavity is formed between the two adjacent elastic pressing plates in the direction of the wire feeding wheel axis, and the groups of filling pads can slide in the radial direction to approach the wire feeding cavity, so that the top surface of the group of filling pads is flush with the top surface of the first arc-shaped pad, and the group of filling pads and the first arc-shaped pad jointly form the bottom wall of the wire feeding cavity to adapt to the clamping and conveying of the welding wire with a large diameter.

[0013] Optionally, a gap is also reserved between two adjacent groups of filling pads, and the groups of filling pads are arranged in a staggered manner with the first arc-shaped pads.

[0014] Optionally, the group of filling pads comprises:

[0015] The second arc-shaped pads are arranged in an axial direction, and the side walls of two adjacent second arc-shaped pads are in radial sliding abutment.

[0016] Optionally, the width of the second arc-shaped pad is smaller than the width of the first arc-shaped pad.

[0017] Optionally, the wire feeding device further comprises:

[0018] The driving gear is rotatably arranged in the box body;

[0019] The driven gears are rotatably arranged in the box body and correspond to the two wire feeding wheels, the driven gears are coaxially arranged with the wire feeding wheels;

[0020] The driving motor is arranged on the outer wall of the box body, the output shaft of the driving motor is connected with a speed reducer, the power output end of the speed reducer is connected with the shaft of the driving gear, the driving gear is in meshing connection with the two driven gears, and the driving gear can drive the two driven gears to synchronously rotate in the same direction, so as to drive the two wire feeding wheels to synchronously rotate in the same direction.

[0021] Optionally, the box body is provided with a connecting block, two deflection blocks are hingedly arranged on the connecting block, the deflection blocks correspond to the pressing wheels one by one, the pressing wheels are rotationally connected with the deflection blocks, and the deflection blocks can drive the pressing wheels to move close to or away from the wire feeding wheel, so as to install the welding wire into the wire feeding cavity.

[0022] Optionally, a clamping groove is formed in the deflection block, a locking rod is hingedly arranged on the box body, and the deflection block is clamped in the clamping groove to lock the deflection block.

[0023] Optionally, the utility model also comprises:

[0024] A mounting plate, the box body is mounted on the mounting plate;

[0025] A welding wire shaft is rotationally arranged on one side of the mounting plate, and the welding wire is wound on the welding wire shaft.

[0026] The utility model discloses the beneficial effect that:

[0027] In the utility model, in the conveying welding wire process, the first arc -shaped backing pad is pasted the wall of welding wire, is supported from the radial to welding wire, guarantees the position stability of welding wire in wire feeding cavity, makes the wall of welding wire always with the abutment state of pressing wheel wall, guarantees the wire feeding smoothly. When the diameter of welding wire changes, the first arc -shaped backing pad is moved along the radial of sliding groove, and the gap between adjacent first arc -shaped backing pad will change with the movement of first arc -shaped backing pad, provides enough space for the variable diameter adjustment of first arc -shaped backing pad, makes first arc -shaped backing pad can adapt the outer periphery profile of new diameter welding wire, continues to support the stability of welding wire. Two first arc -shaped backing pads are used to form the cavity bottom of wire feeding cavity and support welding wire, so that welding wire can abut with wire feeding cavity and pressing wheel simultaneously, and conveying is convenient. Through the radial support of first arc -shaped backing pad to welding wire, the stability of different diameter welding wire in the wire feeding process is further guaranteed. Meanwhile, the gap between adjacent backing pads is used to realize the variable diameter adjustment, without extra replacement parts, the operation process of adapting different diameter welding wire is simplified, and the flexibility and applicability of equipment are improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be needed to use the drawings in the embodiment of the utility model to be briefly introduced. Obviously, the drawings in the following description are only some exemplary embodiments of the utility model. For ordinary skilled in the art, under the premise of not paying the creative labor, other drawings can also be obtained according to the content of the exemplary embodiment of the utility model and these drawings.

[0029] Figure 1 It is the structural schematic drawing of the whole of the wire feeder in one embodiment of the utility model.

[0030] Figure 2 for Figure 1 the main view of the wire feeding wheel in the embodiment of the application;

[0031] Figure 3 for Figure 1 the structural schematic view of the wire feeding wheel in the embodiment of the application;

[0032] Figure 4 for Figure 1 the structural schematic view of the first arc-shaped pad and the second arc-shaped pad in the embodiment of the application;

[0033] Figure 5 for Figure 1 the main view of the wire feeder in the embodiment of the application;

[0034] Figure 6 for Figure 1 the structural schematic view of the driving motor in the embodiment of the application.

[0035] In the figure: 1, box body, 2, wire feeding wheel group, 21, wire feeding wheel, 210, annular groove, 211, elastic pressing plate, 212, wire feeding cavity, 213, sliding groove, 214, first arc-shaped pad, 215, gap, 216, filling pad group, 2160, second arc-shaped pad, 22, pressing wheel, 3, driving gear, 4, driven gear, 5, driving motor, 6, connecting block, 7, deflection block, 71, clamping groove, 8, locking rod, 9, mounting plate, 10, welding wire shaft. DETAILED DESCRIPTION

[0036] The utility model will be further described in detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the utility model, and not limited to the utility model.

[0037] In order to make the drawing simple, only the part related to the utility model is shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0038] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] like Figures 1-6 As shown, a DC welding wire feeder according to an embodiment of the present invention is illustrated, comprising a housing 1 and two sets of wire feeding wheel assemblies 2, both sets of wire feeding wheel assemblies 2 being rotatably disposed within the housing 1. Each set of wire feeding wheel assemblies 2 consists of a wire feeding wheel 21 and a pressing wheel 22, the wire feeding wheel 21 and the pressing wheel 22 being arranged vertically, and the pressing wheel 22 being able to abut against the peripheral wall of the wire feeding wheel 21, the two working together to form a channel for clamping the welding wire. An annular groove 210 is formed along the circumferential direction on the peripheral wall of the wire feeding wheel 21, and two elastic pressing plates 211 are slidably disposed along the axial direction within the annular groove 210, the two elastic pressing plates 211 being symmetrically distributed within the annular groove 210, and their opposite sides forming a wire feeding cavity 212 that can abut against the outer periphery of the welding wire.

[0043] In the above scheme, when the welding wire needs to be conveyed, the welding wire is inserted into the wire feeding cavity 212, and the elastic pressing plate 211 will be pressed against the welding wire wall by its own elasticity to achieve preliminary clamping of the welding wire. When different diameters of welding wire need to be switched, the wire feeding wheel 21 does not need to be disassembled, and only the two elastic pressing plates 211 need to be pushed to slide along the axial direction of the annular groove 210, so that the two elastic pressing plates 211 are close to or away from each other, so as to adjust the distance of the wire feeding cavity 212, thereby adapting to the new diameter of the welding wire, and the wire feeding operation continues after the adjustment is completed. The elastic pressing plate 211 also provides sufficient friction for the welding wire when the wire feeding wheel 21 rotates to prevent the welding wire from slipping during conveying.

[0044] Without stopping to disassemble and replace the special wire feeding wheel 21 when switching different diameters of welding wire, the operation process is not interrupted, especially in the batch surfacing scene where multiple specifications of welding wire are alternately used, which greatly shortens the process cycle and effectively improves the production efficiency. At the same time, there is no need to reserve multiple sets of special wire feeding wheels 21 for different diameters of welding wire, which reduces the cost of purchasing spare parts and the resource investment required for inventory management.

[0045] Further, the elastic pressing plate 211 is annular, and a plurality of sliding grooves 213 are formed in the radial direction. The wire feeding wheel 21 is also provided with a plurality of first arc-shaped pads 214, which are arranged in the circumferential direction in the wire feeding cavity 212, and correspond to the sliding grooves 213 and can slide along the sliding grooves 213. There is a gap 215 between adjacent two first arc-shaped pads 214, which can provide space for the adjacent two first arc-shaped pads 214 to change the diameter when the first arc-shaped pads 214 move radially along the sliding grooves 213. The first arc-shaped pads 214 can provide radial support for the welding wire in the wire feeding cavity 212, ensuring that the welding wire wall can be in abutting contact with the pressing wheel 22 wall.

[0046] In the above scheme, in the process of conveying the welding wire, the first arc-shaped pad 214 is attached to the welding wire wall to support the welding wire radially, ensuring the stability of the position of the welding wire in the wire feeding cavity 212, so that the welding wire wall is always in abutting contact with the pressing wheel 22 wall, ensuring smooth wire feeding. When the diameter of the welding wire changes, the first arc-shaped pad 214 is pushed to move radially along the sliding groove 213, and the gap 215 between the adjacent first arc-shaped pads 214 changes with the movement of the first arc-shaped pad 214, providing enough space for the first arc-shaped pad 214 to change the diameter, so that the first arc-shaped pad 214 can adapt to the outer contour of the new diameter welding wire and continue to stably support the welding wire. The two first arc-shaped pads 214 are used to form the cavity bottom of the wire feeding cavity 212 to support the welding wire, so that the welding wire can be in abutting contact with the wire feeding cavity 212 and the pressing wheel 22 at the same time, facilitating conveying.

[0047] Through the radial support of the welding wire by the first arc-shaped pad 214, the stability of the welding wire with different diameters during the wire feeding process is further ensured, and the wire deviation caused by lack of support and the influence on the wire feeding accuracy are avoided. At the same time, the gap 215 between adjacent pads is used to realize the diameter adjustment, without the need for additional replacement of parts, the operation process for adapting to different diameter welding wires is simplified, and the flexibility and applicability of the equipment are improved.

[0048] Further, the wire feeding wheel 21 is also provided with a plurality of groups of filling pad groups 216, the number of the filling pad groups 216 is the same as that of the first arc-shaped pads 214 on the same elastic pressing plate 211, the filling pad groups 216 are arranged in the circumferential direction and are slidably installed on the groove bottom of the annular groove 210 in the radial direction of the wire feeding wheel 21. When the two first arc-shaped pads 214 move away from each other, an annular cavity is formed between the two adjacent elastic pressing plates 211 in the axial direction of the wire feeding wheel 21, and the filling pad group 216 can slide in the radial direction towards the wire feeding cavity 212. After sliding in place, the top surface of the filling pad group 216 can be flush with the top surface of the first arc-shaped pad 214, and the two together form the bottom wall of the wire feeding cavity 212.

[0049] In the above scheme, when a large-diameter welding wire needs to be transported, the two first arc-shaped pads 214 are first pushed to move away from each other in the axial direction, at which time an annular cavity is formed between the two adjacent elastic pressing plates 211. Then the filling pad group 216 is pushed to slide in the radial direction towards the wire feeding cavity 212 until the top surface of the filling pad group 216 is flush with the top surface of the first arc-shaped pad 214, and the two together form the complete bottom wall of the wire feeding cavity 212, at which time the space of the wire feeding cavity 212 can adapt to the size of the large-diameter welding wire. After the large-diameter welding wire is inserted into the wire feeding cavity 212, the elastic pressing plate 211, the first arc-shaped pad 214 and the filling pad group 216 together form the bottom wall of the wire feeding cavity 212, completing the transportation of the large-diameter welding wire.

[0050] Further, the wire feeding machine can adapt to a wider range of welding wire diameters, especially it can stably transport large-diameter welding wires, without the need to separately equip a special wire feeding wheel 21 for large-diameter welding wires, thereby reducing the cost of using the equipment. At the same time, through the cooperation of the filling pad group 216 and the first arc-shaped pad 214, the stability of the large-diameter welding wire during transportation is ensured, and the wire deviation caused by the incomplete bottom wall of the wire feeding cavity 212 is avoided, thereby improving the wire feeding accuracy of the large-diameter welding wire.

[0051] Further, gaps 215 are also reserved between the two adjacent filling pad groups 216, and the filling pad group 216 and the first arc-shaped pad 214 are arranged in a staggered manner, i.e. the position of the filling pad group 216 does not overlap with the position of the first arc-shaped pad 214, but is staggered in the annular groove 210 of the wire feeding wheel 21. The staggered arrangement can ensure that the wire feeding cavity 212 is a continuous wire feeding cavity 212.

[0052] It should be noted that the first arc-shaped backing plate 214 is fixed with the chute by bolts, and the second arc-shaped backing plate 2160 can also be adjusted in the radial height by bolts. The elastic pressing plate is controlled by the spring rod.

[0053] In the above scheme, when adjusting the radial position of the filling backing plate group 216, the reserved gap 215 between the adjacent filling backing plate groups 216 provides space for the sliding of the filling backing plate group 216, avoiding the collision or interference between the adjacent filling backing plate groups 216 during movement, and ensuring that the filling backing plate group 216 can smoothly slide to the designated position in the radial direction. Since the filling backing plate group 216 and the first arc-shaped backing plate 214 are arranged in a staggered manner, when they are jointly spliced to form the bottom wall of the wire feeding chamber 212, the structural conflict caused by the mutual overlap of the two in position can be avoided, and the splicing of the bottom wall of the wire feeding chamber 212 can be made more tightly, reducing the splicing gap.

[0054] The interference problem between the filling backing plate group 216 and the adjacent components during adjustment is effectively avoided, ensuring the smoothness of the adjustment operation of the filling backing plate group 216 and improving the convenience of equipment adjustment. At the same time, the staggered arrangement makes the splicing of the bottom wall of the wire feeding chamber 212 more tightly, reducing the jamming or deviation of the welding wire caused by the splicing gap during conveying, and further improving the stability and precision of wire feeding.

[0055] Further, the filling backing plate group 216 is composed of a plurality of second arc-shaped backing plates 2160, which are arranged along the axial direction of the wire feeding wheel 21, and the side walls of adjacent second arc-shaped backing plates 2160 can slide and abut in the radial direction, that is, adjacent second arc-shaped backing plates 2160 can slide relative to each other in the radial direction while maintaining the abutting state of the side walls, ensuring the integrity of the filling backing plate group 216.

[0056] In the above scheme, when the radial size of the filling backing plate group 216 needs to be adjusted to adapt to welding wires of different diameters, the adjacent second arc-shaped backing plates 2160 will slide relative to each other in the radial direction, and by changing the degree of radial overlap between the adjacent second arc-shaped backing plates 2160, the adjustment of the overall radial size of the filling backing plate group 216 is realized. During adjustment, the side walls of adjacent second arc-shaped backing plates 2160 always maintain abutment, avoiding gaps in the filling backing plate group 216 and ensuring that the filling backing plate group 216 can still form a complete support surface after adjustment. After adjustment is completed, the filling backing plate group 216 cooperates with the first arc-shaped backing plate 214 to form a bottom wall of the wire feeding chamber 212 that adapts to the diameter of the welding wire, supporting and conveying the welding wire. The radial adjustment of the filling backing plate group 216 is more flexible, which can adapt to more welding wires of different diameters, further improving the versatility of the equipment. At the same time, the adjacent second arc-shaped backing plates 2160 always maintain abutment, avoiding the jamming or deviation of the welding wire during conveying due to the gaps in the filling backing plate group 216, ensuring the stability of the wire feeding process.

[0057] Further, the width of the second arc-shaped filler plate 2160 is smaller than the width of the first arc-shaped filler plate 214, that is, from the axial direction of the wire feeder wheel 21, the axial length occupied by the second arc-shaped filler plate 2160 is shorter than the axial length occupied by the first arc-shaped filler plate 214.

[0058] In the above scheme, when the filler plate group 216 and the first arc-shaped filler plate 214 are jointly spliced to form the bottom wall of the wire feeding cavity 212, due to the smaller width of the second arc-shaped filler plate 2160, it can be more flexible to fill the gap 215 between the first arc-shaped filler plate 214. Especially when adjusting the radial position of the filler plate group 216, the narrower second arc-shaped filler plate 2160 can better adapt to the position change of the first arc-shaped filler plate 214, reducing the position conflict between the two during splicing. At the same time, the narrower width also makes the second arc-shaped filler plate 2160 more flexible when sliding in the radial direction, and it is easier to adjust to a position flush with the top surface of the first arc-shaped filler plate 214. The flexibility and tightness of splicing the filler plate group 216 and the first arc-shaped filler plate 214 are improved, ensuring that the bottom wall of the wire feeding cavity 212 can form a flat and continuous support surface, avoiding the obstruction of the welding wire conveying caused by uneven splicing. At the same time, the flexible adjustment of the second arc-shaped filler plate 2160 also reduces the operation difficulty of equipment adjustment, and improves the efficiency of the equipment adapting to welding wires of different diameters.

[0059] Further, the direct current surfacing wire feeder further comprises a driving gear 3, two driven gears 4 and a driving motor 5. The driving gear 3 is rotatably arranged in the box body 1, and the two driven gears 4 are also rotatably mounted in the box body 1 and correspond to the wire feeder wheels 21 of the two groups of wire feeder wheel groups 2 one by one. Each driven gear 4 is coaxially arranged with the corresponding wire feeder wheel 21. The driving motor 5 is mounted on the outer wall of the box body 1, the output shaft of the driving motor 5 is connected with a speed reducer, the power output end of the speed reducer is connected with the shaft of the driving gear 3, and the driving gear 3 is meshed with the two driven gears 4, which can drive the two driven gears 4 to rotate synchronously.

[0060] In the above scheme, after starting the driving motor 5, the power of the driving motor 5 is transmitted to the reducer through the output shaft, the reducer transmits the power to the wheel shaft of the driving gear 3 after deceleration, and drives the driving gear 3 to rotate. Since the driving gear 3 is engaged with the two driven gears 4, the driving gear 3 will drive the two driven gears 4 to rotate synchronously when the driving gear 3 rotates, and the driven gear 4 is coaxial with the wire feeding wheel 21, so the driven gear 4 will drive the corresponding wire feeding wheel 21 to rotate synchronously. When the wire feeding wheel 21 rotates, it cooperates with the abutting wheel 22 to stably forwardly convey the welding wire clamped in the wire feeding cavity 212. Through the cooperation of the driving gear 3 and the driven gear 4, the synchronous and same direction rotation of the two wire feeding wheels 21 is realized, which ensures that the welding wire is evenly stressed during conveying, avoids the welding wire from being twisted or deviated due to inconsistent rotating speed of the wire feeding wheels 21, improves the stability and precision of wire feeding, and further ensures the quality of surfacing operation. At the same time, the setting of the reducer can adjust the wire feeding speed according to the surfacing requirement, which improves the applicability of the equipment.

[0061] Further, the box body 1 is provided with a connecting block 6, two deflection blocks 7 are arranged on the connecting block 6 in a hinged manner, the deflection blocks 7 correspond to the abutting wheels 22 of the wire feeding wheel set 2 one by one, and each abutting wheel 22 is connected to the corresponding deflection block 7 in a rotatable manner. The deflection block 7 can rotate around the hinge point and can drive the corresponding abutting wheel 22 to move towards or away from the wire feeding wheel 21 during rotation.

[0062] In the above scheme, when it is necessary to install the welding wire into the wire feeding cavity 212, the deflection block 7 is rotated to rotate the deflection block 7 away from the wire feeding wheel 21 around the hinge point, the deflection block 7 drives the abutting wheel 22 to move away from the wire feeding wheel 21 synchronously, at this time the channel between the wire feeding wheel 21 and the abutting wheel 22 is opened, after the welding wire is placed into the wire feeding cavity 212, the deflection block 7 is reversely rotated to drive the abutting wheel 22 to move towards the wire feeding wheel 21, until the abutting wheel 22 abuts against the peripheral wall of the wire feeding wheel 21 and cooperates with the wire feeding wheel 21 to clamp the welding wire, and the installation of the welding wire is completed. During wire feeding, the deflection block 7 remains stable, so that the abutting wheel 22 continuously applies pressure to the welding wire.

[0063] The operation process of installing the welding wire into the wire feeding cavity 212 is simplified, the wire feeding channel can be opened without disassembling the abutting wheel 22, the operation difficulty is reduced, and the efficiency of welding wire installation is improved. At the same time, through the rotation of the deflection block 7, the movement of the abutting wheel 22 can be accurately controlled, so that the pressure of the abutting wheel 22 on the welding wire is moderate, the welding wire is prevented from being deformed due to excessive pressure, or the welding wire is prevented from slipping due to insufficient pressure, and the stability of wire feeding is improved.

[0064] Further, the deflection block 7 is provided with a clamping groove 71, and the box body 1 is provided with a locking rod 8 in a hinged manner, the locking rod 8 can rotate around the hinge point, when the deflection block 7 drives the pressing wheel 22 to move to the specified position, the deflection block 7 can be clamped into the clamping groove 71 of the locking rod 8, and the deflection block 7 is fixed by the locking rod 8, and the rotation of the deflection block 7 is limited.

[0065] In the above scheme, after the welding wire installation is completed and the pressing wheel 22 is adjusted to the appropriate position, the locking rod 8 on the box body 1 is rotated, and the deflection block 7 is clamped into the clamping groove 71 of the locking rod 8, at this time, the locking rod 8 limits the deflection block 7, preventing the deflection block 7 from rotating due to vibration or the reaction force of the welding wire during the wire feeding process, thereby ensuring that the pressing wheel 22 can continuously and stably abut against the peripheral wall of the wire feeding wheel 21. When it is necessary to adjust the position of the pressing wheel 22 again, the locking rod 8 is rotated in the opposite direction, so that the deflection block 7 is separated from the clamping groove 71, and the deflection block 7 can be rotated to adjust the position of the pressing wheel 22.

[0066] Further, the position stability of the pressing wheel 22 during the wire feeding process is further ensured, and the insufficient welding wire clamping force caused by the loosening of the pressing wheel 22 is avoided, so that the situation of welding wire slipping or deviating occurs, and the reliability of the wire feeding is improved. At the same time, the operation of the locking rod 8 is simple and convenient, without the need for additional tools, which facilitates the operator to quickly adjust the position of the pressing wheel 22 according to the needs, and improves the operation flexibility of the equipment.

[0067] Further, the direct current surfacing wire feeder also comprises a mounting plate 9 and a welding wire shaft 10, the box body 1 is fixedly installed on the mounting plate 9, and the mounting plate 9 provides stable support for the box body 1. The welding wire shaft 10 is rotatably arranged on one side of the mounting plate 9, the welding wire shaft 10 is wound with welding wire for surfacing work, and the welding wire shaft 10 can rotate synchronously with the conveying of the welding wire to continuously provide welding wire for the wire feeding wheel set 2.

[0068] In the above scheme, before the surfacing work is performed, the welding wire shaft 10 wound with welding wire is installed at the specified position on one side of the mounting plate 9, one end of the welding wire is pulled out from the welding wire shaft 10 and passes through the channel formed by the wire feeding wheel 21 and the pressing wheel 22, and is fixed at the surfacing work point. After the wire feeder is started, the wire feeding wheel set 2 drives the welding wire to be conveyed forward, at this time, the welding wire shaft 10 will rotate synchronously under the pulling of the welding wire to continuously release the welding wire and provide stable welding wire supply for the wire feeding wheel set 2. The mounting plate 9 ensures the position stability of the box body 1 and the welding wire shaft 10 during the work process through its own fixing effect. The integrated installation of the box body 1 and the welding wire shaft 10 is realized through the mounting plate 9, so that the overall structure of the wire feeder is more compact, and the carrying and installation arrangement of the equipment are facilitated. At the same time, the cooperation of the welding wire shaft 10 and the wire feeding wheel set 2 can continuously and stably supply welding wire for the wire feeding process, avoid the interruption of the work due to the untimely supply of welding wire, and improve the continuity and efficiency of the surfacing work.

[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A direct current deposition wire feeder for automatically feeding a welding wire, characterized in that, The utility model relates to a welding wire feeding device, including: Box (1); Wire feeding wheel group (2) have two groups, two groups wire feeding wheel group (2) are rotationally arranged in box (1), and each wire feeding wheel group (2) includes a wire feeding wheel (21) and a pressing wheel (22), wire feeding wheel (21) and pressing wheel (22) are arranged up and down, and pressing wheel (22) can be abutted to the wall of wire feeding wheel (21) to form a channel for clamping welding wire with wire feeding wheel (21) together; Wherein, the wall of wire feeding wheel (21) is provided with annular groove (210) along its circumferential direction, two elastic pressing plates (211) are slidably arranged in annular groove (210) along its axial direction, two elastic pressing plates (211) are symmetrically distributed in annular groove (210), and the opposite side of two elastic pressing plates (211) forms wire feeding cavity (212) for abutting to the outer wall of welding wire, elastic pressing plate (211) is used for abutting to the wall of welding wire by elasticity when welding wire is arranged in wire feeding cavity (212), and two elastic pressing plates (211) can be close to or away from each other along the axial direction of annular groove (210) to adjust the distance of wire feeding cavity (212).

2. The direct current build-up wire feeder of claim 1, wherein, The elastic pressing plate (211) is annular, and a plurality of sliding grooves (213) are formed on the elastic pressing plate (211) along the radial direction thereof;Wire feeding wheel (21) further includes: A plurality of first arc-shaped pads (214) are circumferentially arranged in wire feeding cavity (212), the first arc-shaped pad (214) corresponds to the sliding groove (213) and is slidably connected with the sliding groove (213), the first arc-shaped pad (214) can radially support the welding wire in the wire feeding cavity (212) to make the wall of the welding wire abut the wall of the pressing wheel (22);Adjacent two first arc-shaped pads (214) have a gap (215), and the gap (215) is used to provide a variable diameter space for adjacent two first arc-shaped pads (214) after the first arc-shaped pad (214) moves radially along the sliding groove (213).

3. The direct current build-up wire feeder of claim 2, wherein, Wire feeding wheel (21) further includes a plurality of filling pad groups (216), the number of filling pad groups (216) is consistent with the number of first arc-shaped pads (214) on the same elastic pressing plate (211), a plurality of filling pad groups (216) are circumferentially arranged and radially slidably arranged at the groove bottom of annular groove (210), and the filling pad group (216) can move radially; When the two first arc-shaped pads (214) are away from each other, an annular cavity is formed between the two adjacent elastic pressing plates (211) in the axis direction of the wire feeding wheel (21); the filling pad group (216) can slide in the radial direction to the wire feeding cavity (212) so that the top surface of the filling pad group (216) is flush with the top surface of the first arc-shaped pad (214) to jointly form the bottom wall of the wire feeding cavity (212) to adapt to the clamping and conveying of the large-diameter welding wire.

4. The direct current build-up wire feeder of claim 3, wherein, A gap (215) is also reserved between the two adjacent filling pad groups (216), and the filling pad group (216) is arranged in a staggered manner with the first arc-shaped pad (214).

5. The direct current build-up wire feeder of claim 3, wherein, The filling pad group (216) comprises: A second arc-shaped pad (2160) has a plurality of second arc-shaped pads (2160) arranged in the axial direction, and the side walls of the two adjacent second arc-shaped pads (2160) slide and abut in the radial direction.

6. The direct current build-up wire feeder of claim 5, wherein, The width of the second arc-shaped pad (2160) is smaller than the width of the first arc-shaped pad (214).

7. The direct current build-up wire feeder of claim 1, wherein, Further comprising: A drive gear (3) is rotationally arranged in the box body (1); Two driven gears (4) are rotationally arranged in the box body (1) and correspond to the two wire feeding wheels (21), and the driven gears (4) are coaxially arranged with the wire feeding wheels (21); A drive motor (5) is arranged on the outer wall of the box body (1), the output shaft of the drive motor (5) is connected with a speed reducer, the power output end of the speed reducer is connected with the shaft of the drive gear (3), the drive gear (3) is engaged with the two driven gears (4), and the drive gear (3) can drive the two driven gears (4) to rotate synchronously to drive the two wire feeding wheels (21) to rotate synchronously in the same direction.

8. The direct current build-up wire feeder of claim 1, wherein, A connecting block (6) is arranged on the box body (1), two deflection blocks (7) are hingedly arranged on the connecting block (6), the deflection blocks (7) correspond to the pressing wheels (22), the pressing wheels (22) are rotationally connected with the deflection blocks (7), and the deflection blocks (7) can drive the pressing wheels (22) to approach or move away from the wire feeding wheels (21) to install the welding wire into the wire feeding cavity (212).

9. The direct overlay flux cored wire feeder of claim 8, wherein, A clamping groove (71) is formed in the deflection block (7), a locking rod (8) is hingedly arranged on the box body (1), and the deflection block (7) is clamped in the clamping groove (71) to lock the deflection block (7).

10. The direct overlay welder wire feeder of claim 1, wherein, Further comprising: A mounting plate (9) is arranged on the box body (1); A welding wire shaft (10) is rotationally arranged on one side of the mounting plate (9), and a welding wire is wound on the welding wire shaft (10).

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