Pressing wheel assembly and novel wire feeding device

Abstract

The utility model relates to the technical field of welding wire feeding equipment, and provides a pinch roller assembly and a novel wire feeding device, and the pinch roller assembly comprises a pinch roller, a pinch roller gear, a pinch roller shell and a pinch roller shaft. Wherein the pressing wheel is fixed on the pressing wheel gear; the pressing wheel shell is provided with a containing groove and a clamping groove. The pressing wheel and the pressing wheel gear are rotationally arranged in the containing groove. The pressing wheel shaft extends into the containing groove and is coaxially and rotatably connected with the pressing wheel and the pressing wheel gear, the pressing wheel shaft is provided with a clamping ring, and the clamping ring is in rotatable locking fit with the clamping groove so as to limit movement of the pressing wheel shaft in the axial direction when the pressing wheel shaft extends into the containing groove. According to the pressing wheel assembly, the pressing wheel shell is arranged, the pressing wheel and the pressing wheel gear are rotationally arranged in the containing groove, the pressing wheel shaft with the clamping ring extends into the containing groove, and the clamping ring and the clamping groove are matched in a rotatable locking mode to limit movement of the pressing wheel shaft, so that the pressing wheel and the pressing wheel gear are easier to assemble and disassemble, and meanwhile the pressing wheel and the pressing wheel gear are more convenient to assemble and disassemble. And the pinch roller shaft can be prevented from loosening in the axial direction, the influence of wire feeding operation is reduced, and the wire feeding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding wire feeding equipment, in particular to a pressure wheel assembly and a novel wire feeding device. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure.

[0003] Welding usually requires wire feeding, that is, a wire feeding device or mechanism automatically delivers the welding wire to the welding position to ensure the efficiency and continuity of the welding process.

[0004] However, in the relevant wire feeding technology, the pressure roller assembly of the wire feeding device is difficult to install and disassemble. It is difficult to install and disassemble the pressure roller assembly without professional tools, and it often becomes loose, making it difficult to meet the requirements of frequent replacement of the pressure roller to match different welding wires, affecting the wire feeding device to transport the welding wire and reducing the wire feeding efficiency. Utility Model Content

[0005] In response to the deficiencies of the prior art, the utility model provides a pressure wheel assembly to solve at least one of the above-mentioned technical defects in the prior art, making the installation and disassembly of the pressure wheel assembly more convenient and easy, and can effectively prevent it from loosening during the wire feeding process, thereby improving the wire feeding efficiency.

[0006] The utility model also provides a novel wire feeding device.

[0007] In order to achieve the purpose of the present invention, the present invention provides a pressure wheel assembly, which includes:

[0008] pressure wheel;

[0009] The pressure wheel housing is provided with a receiving groove and a clamping groove, and the pressure wheel is rotatably arranged in the receiving groove;

[0010] The pressure wheel shaft extends into the receiving groove and is rotatably connected to the pressure wheel.

[0011] The pressure wheel shaft is provided with a snap ring, and the snap ring is rotatably locked with the clamping groove to limit the movement of the pressure wheel shaft in the axial direction after it extends into the accommodating groove.

[0012] Preferably, the pressure wheel shaft includes a pressure wheel shaft body,

[0013] The clamping ring protrudes from the pressure wheel shaft body, and the arc length of the clamping ring is less than or equal to the arc length of the notch of the first clamping groove.

[0014] Preferably, the thickness of the snap ring in the axial direction gradually increases from the first end to the second end of the snap ring.

[0015] The maximum thickness of the clamping ring along the axial direction is greater than or equal to the width of the clamping groove along the axial direction.

[0016] Preferably, the radius of the snap ring in the radial direction gradually increases from the first end to the second end of the snap ring, and the maximum radius of the snap ring in the radial direction is greater than or equal to the depth radius of the groove in the radial direction.

[0017] Preferably, the pressure wheel shaft further includes a gripping column.

[0018] The holding column and the pressure wheel shaft body are located on the same axis and are fixedly connected.

[0019] The clamping ring protrudes from the holding column, and the holding column is provided with knurling on its outer surface.

[0020] The utility model also provides a novel wire feeding device, which comprises: a driving mechanism, a wire feeding mechanism and the above-mentioned pressure wheel assembly;

[0021] The drive mechanism has a drive shaft;

[0022] The wire feeding mechanism includes a wire feeding wheel, which is transmission-connected to the driving shaft of the driving mechanism;

[0023] The pressure wheel and the wire feeding wheel are arranged to rotate relative to each other to form a wire feeding portion.

[0024] Preferably, the wire feeding mechanism includes a first wire feeding mechanism and a second wire feeding mechanism;

[0025] The pressing wheel assembly includes a first pressing wheel assembly having a first pressing wheel and a second pressing wheel assembly having a second pressing wheel;

[0026] The first wire feeding mechanism includes a first bracket provided with a first hinge hole, a first wire feeding wheel assembly having a first wire feeding wheel, and the first pressure wheel assembly is provided on the first wire feeding mechanism.

[0027] The first pressing wheel and the first wire feeding wheel are arranged to rotate relative to each other to form a first wire feeding portion;

[0028] The second wire feeding mechanism includes a second bracket provided with a second hinge hole, a second wire feeding wheel assembly having a second wire feeding wheel, and the second pressure wheel assembly is provided on the second wire feeding mechanism.

[0029] The second pressing wheel and the second wire feeding wheel are arranged to rotate relative to each other to form a second wire feeding portion;

[0030] The driving gear is fixed to the driving shaft, and the driving gear is arranged between the first wire feeding wheel and the second wire feeding wheel and is drivingly connected to the two;

[0031] The first wire feeding mechanism is hinged to the driving shaft through the first hinge hole, and the second wire feeding mechanism is hinged to the driving shaft through the second hinge hole, so that the first wire feeding mechanism and the second wire feeding mechanism can rotate around the driving shaft.

[0032] Preferably, it further comprises a central wire guide tube, a first central wire guide tube positioning piece fixed to the first bracket, and a second central wire guide tube positioning piece fixed to the second bracket.

[0033] The central wire guide tube is located between the first wire feeding part and the second wire feeding part.

[0034] The two ends of the central wire guide tube are respectively sleeved on the first central wire guide tube positioning piece and the second central wire guide tube positioning piece, and the central wire guide tube is a soft wire guide tube.

[0035] Preferably, it further comprises a mounting plate, wherein the mounting plate is provided with a through hole.

[0036] The driving mechanism is arranged on the first side of the mounting plate, the first wire feeding mechanism and the second wire feeding mechanism are both arranged on the second side of the mounting plate, and the driving shaft extends from the first side of the mounting plate through the through hole into the second side of the mounting plate and is connected to the driving gear.

[0037] Preferably, it further comprises a bearing and a guide tap, wherein the bearing is fixed to the drive shaft through its inner ring, and the guide tap is provided at the input end of the first wire feeding part or the second wire feeding part.

[0038] The bearing is fixed to the second hinge hole through its outer ring.

[0039] The beneficial effects of the present invention are as follows: the pressure wheel assembly provided by the present invention is provided with a pressure wheel shell having a receiving groove and a clamping groove, and the pressure wheel and the pressure wheel gear are rotatably arranged in the receiving groove, and a pressure wheel shaft with a clamping ring is provided to extend into the receiving groove and be coaxially rotatably connected with the pressure wheel and the pressure wheel gear, and the clamping ring and the clamping groove are rotatably locked to limit the movement of the pressure wheel shaft in the axial direction when it extends into the receiving groove, thereby making the installation and disassembly of the pressure wheel and the pressure wheel gear easier, and also preventing the pressure wheel shaft from loosening in the axial direction, reducing the impact of the wire feeding operation, and improving the wire feeding efficiency.

[0040] The novel wire feeding device provided by the present invention, since it includes the aforementioned pressure roller assembly, necessarily possesses all the advantages of the pressure roller assembly. Specifically, the novel wire feeding device can not only facilitate the installation and removal of the pressure roller and the pressure roller gear, but also prevent the pressure roller shaft from loosening in the axial direction, thereby reducing the impact on the wire feeding operation and improving the wire feeding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and other purposes, features and advantages of the present invention will become more apparent through a more detailed description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally scaled to actual size, but rather are intended to illustrate the subject matter of the present application.

[0042] Figure 1 An exploded schematic diagram of a pressure wheel assembly provided in an embodiment of the present utility model;

[0043] Figure 2 A schematic diagram of the overall structure of a new wire feeding device provided in an embodiment of the utility model;

[0044] Figure 3 for Figure 2 Front view of

[0045] Figure 4 An exploded schematic diagram of a novel wire feeding device provided in an embodiment of the present utility model;

[0046] Figure 5 An exploded schematic diagram of a first wire feeding mechanism provided in an embodiment of the present utility model;

[0047] Figure 6 An exploded schematic diagram of the second wire feeding mechanism provided in an embodiment of the present utility model;

[0048] Figure 7 This is a schematic exploded view of the first pressure wheel assembly provided in an embodiment of the present utility model.

[0049] In the picture:

[0050] 1. Pinch wheel; 2. Pinch wheel gear; 3. Pinch wheel housing; 31. Accommodation slot; 32. Clamping slot; 4. Pinch wheel shaft; 41. Snap ring; 42. Pinch wheel shaft body; 43. Gripping column; 44. Knurling;

[0051] 100. Driving mechanism; 110. Driving shaft;

[0052] 200, first wire feeding mechanism; 210, first bracket; 211, first hinge hole; 220, first pressure roller assembly; 221, first pressure roller; 222, first pressure roller gear; 230, first wire feeding roller assembly; 231, first wire feeding roller; 232, first wire feeding gear; 233, first pressure roller housing; 2331, first accommodating groove; 2332, first clamping groove; 234, first pressure roller shaft; 2341, first clamping ring; 2342, first pressure roller shaft body; 240, first wire feeding unit;

[0053] 300, second wire feeding mechanism; 310, second bracket; 311, second hinge hole; 320, second pressure roller assembly; 321, second pressure roller; 322, second pressure roller gear; 330, second wire feeding roller assembly; 331, second wire feeding roller; 332, second wire feeding gear; 333, second pressure roller housing; 3332, second retaining groove; 334, second pressure roller shaft; 3341, second retaining ring; 3342, second pressure roller shaft body; 340, second wire feeding unit;

[0054] 400, driving gear;

[0055] 500, central wire guide tube; 510, first central wire guide tube positioning piece; 520, second central wire guide tube positioning piece;

[0056] 600, guide tap;

[0057] 700, mounting plate; 710, through hole; 720, bearing;

[0058] 800, first buckle; 810, second buckle;

[0059] 900, first pressure regulator; 910, second pressure regulator. DETAILED DESCRIPTION

[0060] In order to facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0061] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be an intermediate element. The terms "mounted", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0062] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this document pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0063] The following combination Figures 1 to 7 It should be understood that the following description is merely an illustrative embodiment of the present invention and does not constitute any limitation to the present invention.

[0064] Combine Figure 1 An embodiment of the present invention provides a pressure wheel assembly, which includes a pressure wheel 1, a pressure wheel gear 2, a pressure wheel shell 3 and a pressure wheel shaft 4.

[0065] The pressure wheel 1 is fixed on the pressure wheel gear 2 .

[0066] The pressure wheel housing 3 is provided with a receiving groove 31 and a clamping groove 32 , and the pressure wheel 1 and the pressure wheel gear 2 are rotatably arranged in the receiving groove 31 .

[0067] The pressure wheel shaft 4 extends into the receiving groove 31 and is coaxially rotatably connected with the pressure wheel 1 and the pressure wheel gear 2 .

[0068] The pressure wheel shaft 4 is provided with a snap ring 41, which is rotatably locked with the clamping groove 32 to limit the axial movement of the pressure wheel shaft 4 when it extends into the receiving groove 31. This makes the installation and removal of the pressure wheel 1 and the pressure wheel gear 2 more convenient and quick.

[0069] For example, when the pressure wheel 1 and the pressure wheel gear 2 need to be installed in the accommodating groove 31, the pressure wheel shaft 4 can be extended into the accommodating groove 31, and the pressure wheel shaft 4 can be rotated to lock the retaining ring 41 with the retaining groove 32, and the installation is completed; when the pressure wheel 1 and the pressure wheel gear 2 need to be removed from the accommodating groove 31, the pressure wheel shaft 4 can be rotated to unlock the retaining ring 41 with the retaining groove 32, and the disassembly is completed, which is convenient and quick.

[0070] It can be understood that the pressure wheel assembly provided by the embodiment of the present invention is provided with a pressure wheel shell having a receiving groove and a clamping groove, and the pressure wheel and the pressure wheel gear are rotatably set in the receiving groove, and then a pressure wheel shaft with a clamping ring is provided to extend into the receiving groove and be coaxially rotatably connected with the pressure wheel and the pressure wheel gear, and the clamping ring and the clamping groove are rotatably locked to limit the axial movement of the pressure wheel shaft when it extends into the receiving groove, thereby making the installation and disassembly of the pressure wheel and the pressure wheel gear easier, and also preventing the pressure wheel shaft from loosening in the axial direction, reducing the impact of the wire feeding operation, and improving the wire feeding efficiency.

[0071] Specifically, in some embodiments of the present invention, the pressure wheel shaft 4 includes a pressure wheel shaft body 42 .

[0072] The snap ring 41 protrudes from the pressure wheel shaft body 42, and the arc length of the snap ring 41 is less than or equal to the arc length of the notch of the clamping groove 32. This ensures that the snap ring 41 and the clamping groove 32 do not interfere with each other when unlocking, further facilitating the removal of the pressure wheel 1 and the pressure wheel gear 2, making the removal of the pressure wheel 1 and the pressure wheel gear 2 faster.

[0073] In order to prevent the pressure roller shaft 4 from loosening in the axial direction and facilitate installation and disassembly, in some embodiments of the present invention, the thickness of the snap ring 41 in the axial direction gradually increases from the first end to the second end of the snap ring 41.

[0074] The maximum thickness of the snap ring 41 along the axial direction is greater than or equal to the width of the snap groove 32 along the axial direction.

[0075] When the pressure wheel shaft 4 and the slot 32 need to be locked, the first end of the snap ring 41 is first screwed into the slot 32, and the second end of the snap ring 41 gradually enters the slot 32. Since the thickness of the second end of the snap ring 41 in the axial direction is greater than or equal to the width of the slot 32 in the axial direction, the slot 32 can clamp the snap ring 41.

[0076] When the pressure wheel shaft 4 and the slot 32 need to be unlocked, it is only necessary to first rotate the second end of the snap ring 41 out of the slot 32 and then gradually rotate the first end of the snap ring 41 out of the slot 32 , which is convenient and quick.

[0077] Furthermore, to facilitate the manufacture of the snap ring 41 and the retaining groove 32 and to save costs, in some embodiments of the present invention, the snap ring 41 may be in a nearly semicircular shape, and the retaining groove 32 may also be in a nearly semicircular shape. In other words, the arc length of the snap ring 41 is smaller than the arc length of its own semicircle, and the arc length of the retaining groove 32 is smaller than the arc length of its own semicircle.

[0078] Of course, in some embodiments of the present invention, the radius of the snap ring 41 along the radial direction gradually increases from the first end to the second end of the snap ring 41, and the maximum radius of the snap ring 41 along the radial direction is greater than or equal to the depth radius of the groove 32 in the radial direction, so that the snap ring 41 can abut against the inner wall of the groove 32 to achieve locking.

[0079] In addition, in order to facilitate the screwing of the pressure roller shaft 4, in some embodiments of the present invention, the pressure roller shaft 4 further includes a gripping column 43. The gripping column 43 and the pressure roller shaft body 42 are located on the same axis and are fixedly connected.

[0080] The clamping ring 41 protrudes from the holding column 43 , and the holding column 43 is provided with knurling 44 on the outside to prevent slipping when being screwed.

[0081] Combine Figures 2 to 7 The embodiment of the present invention further provides a novel wire feeding device, which includes a driving mechanism 100, a wire feeding mechanism, a driving gear 400, a central wire guide tube 500, a wire guide tap 600 and the above-mentioned pressure wheel assembly.

[0082] The wire feeding mechanism may be provided with two components, including a first wire feeding mechanism 200 and a second wire feeding mechanism 300. The pressure wheel assembly may be provided with two groups, for example, the pressure wheel assembly includes a first pressure wheel assembly 220 including a first pressure wheel 221 and a second pressure wheel assembly 320 including a second pressure wheel 321.

[0083] The driving mechanism 100 has a driving shaft 110 . The driving mechanism 100 may be a driving motor, and the driving shaft 110 may be a motor output shaft of the driving motor.

[0084] The first wire feeding mechanism 200 includes a first bracket 210 provided with a first hinge hole 211 , a first wire feeding wheel 231 assembly 230 having a first wire feeding wheel 231 , and a first pressure wheel assembly 220 is provided in the first wire feeding mechanism 200 .

[0085] The first pressing wheel 221 and the first wire feeding wheel 231 are arranged to rotate relative to each other to form a first wire feeding portion 240, which can clamp and feed the welding wire.

[0086] The second wire feeding mechanism 300 includes a second bracket 310 provided with a second hinge hole 311 , a second wire feeding wheel assembly 330 having a second wire feeding wheel 331 , and a second pressure wheel assembly 320 is provided in the second wire feeding mechanism 300 .

[0087] The second pressing wheel 321 and the second wire feeding wheel 331 are arranged to rotate relative to each other to form a second wire feeding portion 340 , which can clamp and feed the welding wire output from the first wire feeding portion 240 .

[0088] The driving gear 400 is fixed on the driving shaft 110. The driving gear 400 is arranged between the first wire feeding wheel 231 and the second wire feeding wheel 331 and is driven by both of them, so that the first wire feeding wheel 231 and the second wire feeding wheel 331 can rotate in the same direction to realize the feeding of the welding wire.

[0089] The central wire guide tube 500 is located between the first wire feeding part 240 and the second wire feeding part 340. The welding wire can pass through the first wire feeding part 240, the central wire guide tube 500 and the second wire feeding part 340 in sequence to prevent the welding wire from jumping when being transported from the first wire feeding part 240 to the second wire feeding part 340, thereby improving the stability of wire feeding.

[0090] The wire guide tap 600 is arranged at the input end of the first wire feeding part 240 or the second wire feeding part 340. When the wire guide tap 600 is arranged at the input end of the first wire feeding part 240, the wire guide tube of the welding gun joint can be arranged at the output end of the second wire feeding part 340. The welding wire can enter the wire guide tube of the welding gun joint from the wire guide tap 600, the first wire feeding part 240, the central wire guide tube 500 and the second wire feeding part 340 in sequence. The provision of the wire guide tap 600 can further improve the stability of wire feeding.

[0091] Of course, the wire guide tap 600 can also be set at the input end of the second wire feeding part 340, and the wire guide tube of the welding gun joint can be set at the output end of the first wire feeding part 240. The welding wire can enter the wire guide tube of the welding gun joint from the wire guide tap 600, the second wire feeding part 340, the central wire guide tube 500 and the first wire feeding part 240 in sequence, making the use of the new wire feeding device more flexible.

[0092] The first hinge hole 211 can be coaxially arranged with the second hinge hole 311. The first wire feeding mechanism 200 is hinged to the drive shaft 110 through the first hinge hole 211, and the second wire feeding mechanism 300 is hinged to the drive shaft 110 through the second hinge hole 311, so that the first wire feeding mechanism 200 and the second wire feeding mechanism 300 can rotate around the drive shaft 110. That is, the first wire feeding mechanism 200 and the second wire feeding mechanism 300 can rotate relative to each other around the drive shaft 110 by a certain angle, for example, 15°; so that the introduction angle of the welding wire entering the guide taper 600 can also be adjusted. For example, when the introduction angle between the welding wire and the guide taper 600 is 15°, the angle between the first wire feeding mechanism 200 and the second wire feeding mechanism 300 can be adjusted to 15° to adjust the introduction angle between the welding wire and the guide taper 600 to zero or close to zero, which can greatly reduce the friction on the welding wire, thereby improving the stability of wire feeding and making the wire feeding operation easier and smoother.

[0093] It is understood that the novel wire feeding device provided by the embodiments of the present invention, since it includes the aforementioned pressure roller assembly, necessarily possesses all the advantages of the pressure roller assembly. Specifically, the novel wire feeding device can not only facilitate the installation and removal of the pressure roller and the pressure roller gear, but also prevent the pressure roller shaft from loosening in the axial direction, thereby reducing the impact on the wire feeding operation and improving the wire feeding efficiency.

[0094] In addition, the new wire feeding device sets a first hinge hole 211 on the first bracket 210 of the first wire feeding mechanism 200, sets a second hinge hole 311 on the second bracket 310 of the second wire feeding mechanism 300, and hinges the first wire feeding mechanism 200 to the drive shaft 110 through the first hinge hole 211, and hinges the second wire feeding mechanism 300 to the drive shaft 110 through the second hinge hole 311, so that the first wire feeding mechanism 200 and the second wire feeding mechanism 300 can rotate around the drive shaft 110 to achieve the adjustment of the relative rotation angle between the first wire feeding mechanism 200 and the second wire feeding mechanism 300, so that the introduction angle between the welding wire and the guide tap 600 can also be adjusted, which can greatly reduce the friction on the welding wire and make the wire feeding operation easier, smoother and more stable.

[0095] Specifically, in some embodiments of the present invention, the novel wire feeding device further includes a first central wire guide tube positioning piece 510 fixed on the first bracket 210 and a second central wire guide tube positioning piece 520 fixed on the second bracket 310 .

[0096] The two ends of the central wire guide tube 500 are respectively mounted on the first central wire guide tube positioning piece 510 and the second central wire guide tube positioning piece 520, which can fix the position of the central wire guide tube 500 and prevent it from loosening during the welding wire feeding process. The central wire guide tube 500 is a soft wire guide tube, for example, the central wire guide tube 500 can be a plastic wire guide tube, so that when the first wire feeding mechanism 200 and the second wire feeding mechanism 300 rotate relative to each other (for example, the first wire feeding mechanism 200 and the second wire feeding mechanism 300 swing up and down), the central wire guide tube 500 can bend, and the angle between the welding wire and the central wire guide tube 500 can be adjusted, making it easier to adjust the introduction angle between the welding wire and the guide taper 600, further improving the stability and smoothness of the welding wire feeding.

[0097] Of course, in order to facilitate the installation, use and disassembly of the new wire feeding device, in some embodiments of the present invention, the new wire feeding device further includes a mounting plate 700 , and a through hole 710 is provided on the mounting plate 700 .

[0098] The driving mechanism 100 is arranged on the first side of the mounting plate 700, the first wire feeding mechanism 200 and the second wire feeding mechanism 300 are both arranged on the second side of the mounting plate 700, and the driving shaft 110 extends from the first side of the mounting plate 700 through the through hole 710 into the second side of the mounting plate 700 and is connected to the driving gear 400.

[0099] When the driving shaft 110 of the driving mechanism 100 rotates, it can drive the driving gear 400 located on the second side of the mounting plate 700 to rotate, thereby driving the first wire feeding wheel 231 and the second wire feeding wheel 331 to rotate in the same direction to feed the welding wire.

[0100] In other words, the drive motor is fixed to the mounting plate 700, and the first wire feed mechanism 200 and the second wire feed mechanism 300 are both hinged to the motor output shaft of the drive motor. When the new wire feeder is to be installed in an electric welding machine, it is only necessary to align the mounting holes on the mounting plate 700 with the mounting holes pre-set on the welding machine according to the installation drawings, adjust the position, and tighten the mounting bolts.

[0101] Furthermore, in order to reduce the friction generated when the first wire feeding mechanism 200 and the second wire feeding mechanism 300 are hinged and rotated with the drive shaft 110, and to make the angle adjustment between the first wire feeding mechanism 200 and the second wire feeding mechanism 300 more flexible, in some embodiments of the present invention, the new wire feeding device also includes a bearing 720, and the bearing 720 is fixed on the drive shaft 110 through its inner ring, and the bearing 720 is fixed to the second hinge hole 311 through its outer ring.

[0102] In some embodiments of the present invention, the first wire feeding wheel assembly 230 further includes a first wire feeding gear 232 , wherein the first wire feeding wheel 231 and the first wire feeding gear 232 are coaxially fixed and rotatably arranged on the first bracket 210 .

[0103] The first pressure wheel assembly 220 includes a first pressure wheel gear 222 . The first pressure wheel 221 and the first pressure wheel gear 222 are coaxially fixed and rotatably disposed on the first bracket 210 .

[0104] The first wire feed gear 232 is meshed and transmission-connected with the first pressure roller gear 222, and the drive gear 400 is meshed and transmission-connected with the first wire feed gear 232. When the drive gear 400 rotates clockwise, the first wire feed gear 232 also rotates clockwise, thereby driving the first pressure roller gear 222 to rotate counterclockwise, enabling the first wire feed portion 240 formed between the opposed first pressure roller 221 and the first wire feed roller 231 to feed the welding wire in the first direction. This clever use of gear transmission simplifies the structure of the first wire feed mechanism 200, thereby reducing manufacturing and maintenance costs.

[0105] Of course, in order to further simplify the structure of the second wire feeding mechanism 300, make the new wire feeding device simpler, reduce the failure rate and save costs, in some embodiments of the present invention, the second wire feeding mechanism 300 and the first wire feeding mechanism 200 are arranged symmetrically.

[0106] Specifically, the second wire feeding wheel assembly 330 further includes a second wire feeding gear 332 , wherein the second wire feeding wheel 331 and the second wire feeding gear 332 are coaxially fixedly arranged and rotatably arranged on the second bracket 310 .

[0107] The second pressure wheel assembly 320 includes a second pressure wheel gear 322 . The second pressure wheel 321 and the second pressure wheel gear 322 are coaxially fixed and rotatably disposed on the second bracket 310 .

[0108] The second wire feed gear 332 is meshed and transmission-connected with the second pressure roller gear 322, and the drive gear 400 is meshed and transmission-connected with the second wire feed gear 332. When the drive gear 400 rotates clockwise, the second wire feed gear 332 rotates counterclockwise, thereby driving the second pressure roller gear 322 to rotate clockwise, enabling the second wire feed portion 340 formed between the opposed second pressure roller 321 and the second wire feed roller 331 to feed the welding wire in the first direction. This clever use of gear transmission simplifies the structure of the second wire feed mechanism 300, thereby reducing manufacturing and maintenance costs.

[0109] In some embodiments of the present invention, the first paddle wheel assembly 220 further includes a first paddle wheel shell 233 and a first paddle wheel shaft 234 .

[0110] The first pressure wheel housing 233 is provided with a first receiving groove 2331 and a first clamping groove 2332 , and the first pressure wheel 221 and the first pressure wheel gear 222 are provided in the first receiving groove 2331 .

[0111] The first pressing wheel shaft 234 extends into the first receiving groove 2331 and is rotatably connected to the first pressing wheel 221 and the first pressing wheel gear 222 .

[0112] The first pressure roller shaft 234 is provided with a first snap ring 2341, which is rotatably locked with the first retaining groove 2332 to limit the axial movement of the first pressure roller shaft 234 when it extends into the first receiving groove 2331. This makes the installation and removal of the first pressure roller 221 and the first pressure roller gear 222 more convenient and quick.

[0113] For example, when the first pressure wheel 221 and the first pressure wheel gear 222 need to be installed in the first accommodating groove 2331, the first pressure wheel shaft 234 can be extended into the first accommodating groove 2331, and the first pressure wheel shaft 234 can be rotated to lock the first retaining ring 2341 with the first retaining groove 2332, and the installation is completed; when the first pressure wheel 221 and the first pressure wheel gear 222 need to be removed from the first accommodating groove 2331, the first pressure wheel shaft 234 can be rotated to unlock the first retaining ring 2341 with the first retaining groove 2332, and the disassembly is completed, which is convenient and quick.

[0114] Specifically, in some embodiments of the present invention, the first pressure wheel shaft 234 includes a first pressure wheel shaft body 2342 .

[0115] The first snap ring 2341 protrudes from the first pressure wheel shaft body 2342, and the arc length of the first snap ring 2341 is less than or equal to the arc length of the notch of the first retaining groove 2332. This ensures that the first snap ring 2341 and the first retaining groove 2332 do not interfere with each other when unlocking, further facilitating and speeding up the removal of the first pressure wheel 221 and the first pressure wheel gear 222.

[0116] In order to prevent the first pressure wheel shaft 234 from loosening in the axial direction and facilitate installation and disassembly, in some embodiments of the present invention, the thickness of the first clamping ring 2341 along the axial direction gradually increases from the first end to the second end of the first clamping ring 2341.

[0117] The maximum thickness of the first clamping ring 2341 along the axial direction is greater than or equal to the width of the first clamping groove 2332 along the axial direction.

[0118] When the first pressure wheel shaft 234 and the first slot 2332 need to be locked, the first end of the first snap ring 2341 is first screwed into the first slot 2332, and the second end of the first snap ring 2341 gradually enters the first slot 2332. Since the thickness of the second end of the first snap ring 2341 along the axial direction is greater than or equal to the width of the first slot 2332 along the axial direction, the first slot 2332 can clamp the first snap ring 2341.

[0119] When the first pressure wheel shaft 234 and the first slot 2332 need to be unlocked, it is only necessary to first rotate the second end of the first snap ring 2341 out of the first slot 2332 and then gradually rotate the first end of the first snap ring 2341 out of the first slot 2332, which is convenient and quick.

[0120] In addition, since the second wire feeding mechanism 300 and the first wire feeding mechanism 200 are arranged symmetrically, the second pressure wheel assembly 320 and the first pressure wheel assembly 220 can also be arranged symmetrically.

[0121] That is, the second paddle wheel assembly 320 also includes a second paddle wheel shell 333 and a second paddle wheel shaft 334 .

[0122] Among them, the second pressure wheel shell 333 is also provided with a second accommodating groove (not shown in the drawings) and a second clamping groove 3332, the second pressure wheel 321 and the second pressure wheel gear 322 are arranged in the second accommodating groove (not shown in the drawings), and the second pressure wheel shaft 334 is provided with a second clamping ring 3341.

[0123] The second pressure wheel shaft 334 includes a second pressure wheel shaft body 3342 . The second snap ring 3341 protrudes from the second pressure wheel shaft body 3342 , and the arc length of the second snap ring 3341 is less than or equal to the arc length of the notch of the second clamping groove 3332 .

[0124] The relationship between the various components in the second paddle wheel assembly 320 is consistent with the relationship between the various components in the first paddle wheel assembly 220, and will not be repeated here.

[0125] In some embodiments of the present invention, the novel wire feeding device further includes a first clip 800 and a first pressure regulator 900 .

[0126] The first clip 800 is hinged to the first bracket 210 and can lock the wire guide tube of the guide tap 600 or the welding gun connector. For example, when the wire guide tube of the welding gun connector needs to be installed corresponding to the first wire feeder, the first clip 800 can be rotated in a first direction about the hinge axis with the first bracket 210 to lock the wire guide tube of the welding gun connector and prevent it from loosening. When the wire guide tube of the welding gun connector needs to be removed from the first wire feeder, the first clip 800 can be rotated in a second direction about the hinge axis with the first bracket 210 to release the lock on the wire guide tube of the welding gun connector, thereby facilitating the installation and removal of the wire guide tube of the welding gun connector.

[0127] The first pressure regulator 900 is disposed on the first pressure wheel housing 233 , and can adjust the pressure exerted by the first pressure wheel 221 on the welding wire located in the first wire feeding portion 240 .

[0128] In addition, since the second wire feeding mechanism 300 is arranged symmetrically with the first wire feeding mechanism 200 , the novel wire feeding device further includes a second buckle 810 and a second pressure regulator 910 .

[0129] The second clip 810 is hinged to the second bracket 310 and can lock the wire guide tube of the guide tap 600 or the welding gun connector. For example, when the guide tap 600 needs to be installed corresponding to the second wire feeder 340, the second clip 810 can be rotated in a first direction about its hinge axis with the second bracket 310 to guide the guide tap 600 and prevent it from loosening. When the guide tap 600 needs to be removed from the second wire feeder 340, the second clip 810 can be rotated in a second direction about its hinge axis with the second bracket 310 to release the lock on the guide tap 600, facilitating installation and removal of the guide tap 600.

[0130] The second pressure regulator 910 is provided on the second pressure wheel housing 333 , and can adjust the pressure exerted by the second pressure wheel 321 on the welding wire in the second wire feeding portion 340 .

[0131] In this specification, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it can mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it can mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0132] In the description of this specification, the description with reference to the terms "preferred embodiment", "further embodiment", "some embodiments", "other embodiments" or "specific example" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0133] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A pressure wheel assembly, characterized in that: include: pressure wheel; The pressure wheel housing is provided with a receiving groove and a clamping groove, and the pressure wheel is rotatably arranged in the receiving groove; The pressure wheel shaft extends into the receiving groove and is rotatably connected to the pressure wheel. The pressure wheel shaft is provided with a snap ring, and the snap ring is rotatably locked with the clamping groove to limit the movement of the pressure wheel shaft in the axial direction after it extends into the accommodating groove.

2. The pressure wheel assembly according to claim 1, wherein: The pressure wheel shaft comprises a pressure wheel shaft body, The clamping ring protrudes from the pressure wheel shaft body, and the arc length of the clamping ring is less than or equal to the arc length of the notch of the first clamping groove.

3. The pressure wheel assembly according to claim 1, wherein: The thickness of the snap ring in the axial direction gradually increases from the first end to the second end of the snap ring. The maximum thickness of the clamping ring along the axial direction is greater than or equal to the width of the clamping groove along the axial direction.

4. The pressure wheel assembly according to claim 1, wherein: The radius of the snap ring in the radial direction gradually increases from the first end to the second end of the snap ring, and the maximum radius of the snap ring in the radial direction is greater than or equal to the depth radius of the groove in the radial direction.

5. The pressure wheel assembly according to claim 1, wherein: The pressure wheel shaft also includes a gripping column, The holding column and the pressure wheel shaft body are located on the same axis and are fixedly connected. The clamping ring protrudes from the holding column, and the holding column is provided with knurling on its outer surface.

6. A new type of wire feeding device, characterized in that: include: A driving mechanism, a wire feeding mechanism, a driving gear and a pressure wheel assembly according to any one of claims 1 to 5; The drive mechanism has a drive shaft; The wire feeding mechanism includes a wire feeding wheel, which is transmission-connected to the driving shaft of the driving mechanism; The pressure wheel and the wire feeding wheel are arranged to rotate relative to each other to form a wire feeding portion.

7. The novel wire feeding device according to claim 6, characterized in that: The wire feeding mechanism includes a first wire feeding mechanism and a second wire feeding mechanism; The pressing wheel assembly includes a first pressing wheel assembly having a first pressing wheel and a second pressing wheel assembly having a second pressing wheel; The first wire feeding mechanism includes a first bracket provided with a first hinge hole, a first wire feeding wheel assembly having a first wire feeding wheel, and the first pressure wheel assembly is provided on the first wire feeding mechanism. The first pressing wheel and the first wire feeding wheel are arranged to rotate relative to each other to form a first wire feeding portion; The second wire feeding mechanism includes a second bracket provided with a second hinge hole, a second wire feeding wheel assembly having a second wire feeding wheel, and the second pressure wheel assembly is provided on the second wire feeding mechanism. The second pressing wheel and the second wire feeding wheel are arranged to rotate relative to each other to form a second wire feeding portion; The driving gear is fixed to the driving shaft, and the driving gear is arranged between the first wire feeding wheel and the second wire feeding wheel and is drivingly connected to the two; The first wire feeding mechanism is hinged to the driving shaft through the first hinge hole, and the second wire feeding mechanism is hinged to the driving shaft through the second hinge hole, so that the first wire feeding mechanism and the second wire feeding mechanism can rotate around the driving shaft.

8. The novel wire feeding device according to claim 7, characterized in that: It also includes a central wire guide tube, a first central wire guide tube positioning piece fixed to the first bracket, and a second central wire guide tube positioning piece fixed to the second bracket. The central wire guide tube is located between the first wire feeding part and the second wire feeding part. The two ends of the central wire guide tube are respectively sleeved on the first central wire guide tube positioning piece and the second central wire guide tube positioning piece, and the central wire guide tube is a soft wire guide tube.

9. The novel wire feeding device according to claim 8, characterized in that: It also includes a mounting plate, wherein the mounting plate is provided with a through hole, The driving mechanism is arranged on the first side of the mounting plate, the first wire feeding mechanism and the second wire feeding mechanism are both arranged on the second side of the mounting plate, and the driving shaft extends from the first side of the mounting plate through the through hole into the second side of the mounting plate and is connected to the driving gear.

10. The novel wire feeding device according to claim 9, characterized in that: It also includes a bearing and a guide tap, wherein the bearing is fixed to the drive shaft through its inner ring, and the guide tap is provided at the input end of the first wire feeding part or the second wire feeding part. The bearing is fixed to the second hinge hole through its outer ring.

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