An automatic stripping device for magnesium alloy welding wire

Abstract

The present invention relates to an automatic stripping device for magnesium alloy welding wire, comprising a housing, wherein a first through-hole is provided at the center of each of the two axial end plates of the housing, and at least one set of stripping devices is provided within the housing, each set of stripping devices comprising two strippers symmetrically arranged about the axis of the first through-hole. The toothed rings of the two strippers in the same set of stripping devices are meshed and connected, and the sleeves contact each other. An external shaft extends to the exterior of the housing, and a driven wheel is fixed to the end of one of the external shafts. A motor is fixed to the exterior of the housing, and the motor drives the driven wheel to rotate. The present invention can strip magnesium alloy welding wire under gas protection, remove the oxide layer on its surface, and optimize the welding effect.

Description

Technical Field

[0001] The invention belongs to the technical field of magnesium alloy welding wire production, and particularly relates to an automatic peeling device for magnesium alloy welding wire. Background Art

[0002] Welding is a common technique for connecting structural parts. To fill gaps between components and secure them together, welding wire is used. In gas welding and gas tungsten arc welding, the wire serves as the filler metal. In submerged arc welding, electroslag welding, and other metal arc welding methods, the wire acts as both the filler metal and the conductive electrode.

[0003] Structural parts made of different metals require welding wire made of the same metal. Magnesium alloy welding wire is used in the welding of magnesium alloy structural parts. Magnesium alloy welding wire is produced by extrusion. The surface temperature of the wire coming out of the extruder is high, and it quickly forms an oxide layer when it comes into contact with oxygen in the air. During the actual welding process, the oxide layer has a negative impact. If the oxide layer can be removed before welding with magnesium alloy welding wire, the formation of welding slag can be effectively reduced, and the mechanical properties of the weld can be optimized. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the existing technology and provide an automatic stripping device for magnesium alloy welding wire. The present invention can strip the magnesium alloy welding wire under gas protection, remove the oxide layer on its surface, and optimize the welding effect.

[0005] The technical solution adopted by the present invention to solve the problems existing in the prior art is:

[0006] An automatic stripping device for magnesium alloy welding wire comprises a shell, wherein the center positions of the two axial end plates of the shell are each provided with a first through hole, and at least one group of stripping devices is provided inside the shell, and each group of stripping devices comprises two strippers symmetrically arranged around the axis of the first through hole.

[0007] The peeler includes a middle part and a first rotating shaft and an external shaft that are coaxially fixedly connected in sequence on both sides of the middle part. A semicircular groove is recessed in the middle of the middle circumferential surface. A ring-shaped clamping sleeve is fixed on both sides of the semicircular groove of the middle circumferential surface. The gap between the clamping sleeve and the middle circumferential surface is less than or equal to the thickness of sandpaper. A gear ring is provided on the side of the clamping sleeve away from the semicircular groove. The gear ring is fixedly connected to the middle part, and the outer diameter of the gear ring is larger than the outer diameter of the clamping sleeve.

[0008] The middle upper sleeve is provided with sandpaper, the middle of the sandpaper is concavely arranged inside the semicircular groove, and the two ends of the sandpaper are inserted into the gap between the clamping sleeve and the middle part.

[0009] The tooth rings of the two peelers of the same peeling device are meshed and connected with each other, and the clamping sleeves are in contact with each other.

[0010] The circumscribed shaft is passed through the outside of the shell, a driven wheel is fixed to one end of the circumscribed shaft, and a motor is fixed to the outside of the shell, and the motor drives the driven wheel to rotate.

[0011] Preferably, at least two cleaning devices are provided inside the shell at the rear end of the peeling device, and the multiple cleaning devices are respectively arranged on both sides of the axis of the first through hole.

[0012] Preferably, the cleaning device includes a rotating roller, a plurality of bristles are fixed on the circumferential surface of the rotating roller, a second rotating shaft is coaxially fixed to both ends of the rotating roller, and the end of the second rotating shaft is passed through the outside of the shell.

[0013] The motor drives the second rotating shaft to rotate.

[0014] Preferably, two groups of peeling devices are arranged front and back inside the shell along the axis direction of the first through hole, the angle between the two groups of peeling devices is °, and at least two cleaning devices are provided between the two groups of peeling devices and behind the rear end peeling device.

[0015] Preferably, the front-end peeling device is arranged horizontally, and the rear-end peeling device and all cleaning devices are arranged vertically.

[0016] A second motor is fixed to the front end of the shell, a second gear is fixed to the output shaft of the second motor, and the second gear is meshed and connected with the driven wheel of the front end peeling device.

[0017] A pulley is fixed to the end of the second rotating shaft at the upper end of the cleaning device.

[0018] The driven wheel of the rear end peeling device is at the upper end of the outer shell. The driven wheel of the rear end peeling device includes two layers of fixedly connected gear parts and a pulley part. The pulley part of the driven wheel and all the pulleys are jointly provided with a synchronous belt.

[0019] A first motor is fixed on the side wall of the shell, a first gear is fixed on the output shaft of the first motor, and the first gear is meshed and connected with the gear portion of the driven wheel of the rear end peeling device.

[0020] Preferably, the shell includes a bottom plate, two axial end plates, two radial end plates and a top plate.

[0021] The two axial end plates are respectively arranged at the front and rear ends of the base plate, and the bottom surface of the axial end plates is fixedly connected to the base plate. The two radial end plates are respectively arranged at the front and rear ends of the base plate, and the radial end plates are fixedly connected to the axial end plates by bolts. The top plate is located above the axial end plates, and the top plate is fixedly connected to the axial end plates by bolts.

[0022] A plurality of mounting plates are fixed on the left and right sides of the bottom plate respectively, and the mounting plates are provided with bolt holes or waist-shaped holes.

[0023] A window hole is provided on one of the radial end plates, and a transparent plate is provided on the window hole.

[0024] Preferably, a waist-shaped hole is provided on the end face of the shell corresponding to the circumscribed shaft of a peeler in each group of peeling devices, the circumscribed shaft passes through the waist-shaped hole, and the length direction of the waist-shaped hole is perpendicular to the axis of the first through hole.

[0025] A distance adjusting device is provided outside the shell, and the distance adjusting device includes a pressure rod, a first arc-shaped plate and a horizontal rod.

[0026] The first arc plate corresponds to the waist-shaped hole one by one, and contacts the circumferential surface of the circumscribed shaft. A pressure rod is fixed on one end of the first arc plate away from the circumscribed shaft, and the ends of the two pressure rods on both sides of the shell are fixedly connected to a horizontal rod.

[0027] A U-shaped frame is fixed on the end face of one side of the shell where the horizontal rod is located. A slide groove is provided on the two parallel end faces of the U-shaped frame. The horizontal rod passes through the slide groove. An adjusting bolt is threadedly connected on the end face of the U-shaped frame parallel to the horizontal rod, and one end of the adjusting bolt is in contact with the horizontal rod.

[0028] Preferably, an exhaust joint connected to the interior of the shell is provided below the center of the bottom surface of the base plate.

[0029] A supporting device is provided inside the exhaust joint.

[0030] The supporting device includes two second arc-shaped plates, a supporting rod and a control rod. The two second arc-shaped plates are respectively located between the two groups of peeling devices and between the rear end peeling device and the first through hole at the rear end.

[0031] The second curved plate is provided with a plurality of second through holes, the vertically arranged support rods are fixedly connected to the bottom surface of the second curved plate, and the lower ends of the two support rods are fixedly connected to a horizontally arranged control rod.

[0032] The exhaust joint is a rectangular tube. Vertically arranged slide grooves are provided on the front and rear end faces of the exhaust joint. The two ends of the control rod are respectively passed through the two slide grooves to the outside of the exhaust joint.

[0033] Preferably, an air outlet pipe is connected through the opening of the exhaust joint, a second air pump is connected to the air outlet pipe, and a filtering device is provided at the end of the air outlet pipe.

[0034] A method for using an automatic stripping device for magnesium alloy welding wire comprises the following steps:

[0035] A. Push the second curved plate upward. When the control rod moves to the top dead center, the axis of the second curved plate coincides with the axis of the first through hole.

[0036] B. Insert the welding wire from the first through-hole at the front end. The welding wire moves from front to back. The motor is powered on. The strippers start to rotate, and the two strippers in each group rotate towards each other, giving the welding wire a force to move toward the rear end, pushing the welding wire onto the second curved plate. Then, the welding wire passes through the rear end stripper and is guided by another second curved plate into the first through-hole at the rear end, and then moves out of the housing.

[0037] C. The end of the welding wire removed from the housing is fixed on a straightener, a welding machine, or a winding machine, which draws the welding wire and lowers the second arc plate. The rotation direction of the strippers is then adjusted so that the two strippers in each group rotate in opposite directions to optimize the stripping effect on the welding wire.

[0038] D. Turn on the second air pump, and the metal powder produced by peeling is sucked into the filter device by the second air pump for collection.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] (1) The surface of the welding wire is polished with rotating sandpaper to remove the oxide layer on its surface.

[0041] (2) The second air pump draws the powder generated by grinding the welding wire inside the shell out of the shell and stores it inside the filter device to prevent the dust from flying everywhere.

[0042] (3) A cleaning device is provided at the rear end of the peeling device to clean the surface of the rubbed welding wire and keep its surface clean for subsequent grinding and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below with reference to the accompanying drawings and examples.

[0044] Figure 1 This is a gas connection system diagram of an automatic stripping device for magnesium alloy welding wire according to the present invention.

[0045] Figure 2 This is the first appearance diagram of an automatic stripping device for magnesium alloy welding wire according to the present invention.

[0046] Figure 3 This is the second appearance diagram of the automatic stripping device for magnesium alloy welding wire of the present invention.

[0047] Figure 4 This is a schematic diagram showing the decomposition of the housing of an automatic stripping device for magnesium alloy welding wire according to the present invention.

[0048] Figure 5 This is a horizontal cross-sectional view of an automatic stripping device for magnesium alloy welding wire according to the present invention.

[0049] Figure 6 for Figure 5A partial enlarged view of point A in the middle.

[0050] Figure 7 This is a vertical cross-sectional view of an automatic stripping device for magnesium alloy welding wire according to the present invention.

[0051] Figure 8 for Figure 7 A partial enlarged view of point B in the middle.

[0052] Figure 9 This is the appearance diagram of the first group of strippers of the automatic stripping device for magnesium alloy welding wire of the present invention.

[0053] Figure 10 This is the appearance diagram of the second group of strippers of the automatic stripping device for magnesium alloy welding wire of the present invention.

[0054] Figure 11 This is a diagram showing the separation effect of the stripper and sandpaper of an automatic stripping device for magnesium alloy welding wire according to the present invention.

[0055] Figure 12 This is a cross-sectional view of a single stripper of an automatic stripping device for magnesium alloy welding wire according to the present invention.

[0056] Figure 13 for Figure 12 A partial enlarged view of point C in the middle.

[0057] Figure 14 This is a schematic diagram of the rotation direction of the welding wire and sandpaper during installation of the welding wire of the present invention.

[0058] Figure 15 This is a schematic diagram of the rotation direction of the welding wire and sandpaper during stripping according to the present invention.

[0059] In the figure: 1-housing, 101-bottom plate, 102-axial end plate, 1021-first through hole, 103-radial end plate, 1031-window hole, 1032-support plate, 104-mounting plate, 105-top plate, 106-waist-shaped hole, 107-first air inlet connector, 108-U-shaped frame, 109-exhaust connector, 2-guide sleeve, 201-annular air channel, 202-second air inlet connector, 203-jet hole, 3-peeler, 301-middle, 3011-card sleeve, 3012-semicircular groove, 302-gear ring, 303-sandpaper, 304-first rotating shaft, 305-external shaft, 306-driven wheel, 4-cleaning device, 401-roller, 402-brush, 403-second rotating shaft, 404-pulley , 5-brush, 6-synchronous belt, 7-first motor, 701-first gear, 8-second motor, 801-second gear, 9-pitch adjustment device, 901-pressure rod, 902-first arc plate, 903-horizontal rod, 10-adjusting bolt, 11-support device, 1101-second arc plate, 1102-second through hole, 1103-support rod, 1104-control rod, 12-welding wire, 13-blocking plate, 14-transparent plate, 15-dust box, 16-filter device, 17-gas cylinder, 1701-first solenoid valve, 18-pressure relief pipe, 1801-second solenoid valve, 19-inlet pipe, 1901-first air pump, 20-pressure sensor, 21-oxygen concentration sensor, 22-outlet pipe, 2201-second air pump. DETAILED DESCRIPTION

[0060] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0061] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are merely used to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed or operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0062] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0063] The following is a further detailed description of an automatic peeling device for magnesium alloy welding wire according to the present invention in conjunction with the accompanying drawings, but this is not intended to limit the present invention.

[0064] An automatic stripping device for magnesium alloy welding wire includes a housing 1. To facilitate replacement and maintenance, the housing 1 is detachable in this embodiment. The housing 1 includes a bottom plate 101, two axial end plates 102, two radial end plates 103, and a top plate 105.

[0065] Two axial end plates 102 are mounted on the front and rear ends of the base plate 101, with their bottom surfaces fixedly connected to the base plate 101. Two radial end plates 103 are mounted on the left and right ends of the base plate 101, with the radial end plates 103 fixedly connected to the axial end plates 102 by bolts. A top plate 105 is positioned above the axial end plates 102 and fixedly connected to the two axial end plates 102 by bolts. The base plate 101, axial end plates 102, radial end plates 103, and top plate 105 form a rectangular outer shell, i.e., the housing 1. By removing the bolts, the radial end plates 103 and top plate 105 can be separated, exposing all internal components of the housing 1 for easy maintenance, servicing, and component replacement.

[0066] A plurality of mounting plates 104 are fixed on the left and right sides of the base plate 101 , respectively. The mounting plates 104 are provided with bolt holes or waist-shaped holes. The base plate 101 is fixed to the bracket or platform table through the mounting plates 104 .

[0067] A window hole 1031 is formed in one of the radial end plates 103, and a transparent plate 14 covers the window hole 1031. Through the transparent plate 14, the internal conditions of the housing 1, including the movement of the welding wire, the position of various components, and their operating conditions, can be observed. To facilitate observation, the area of the window hole 1031 is maximized without interfering with the installation of other components.

[0068] A first through hole 1021 is provided at the center of each of the two axial end plates 102 of the housing 1 , and the axes of the two first through holes 1021 coincide with each other.

[0069] At least one set of peeling devices is provided inside the housing 1 , and each set of peeling devices includes two peelers 3 symmetrically arranged around the axis of the first through hole 1021 .

[0070] The peeler 3 includes a central portion 301 and a first rotating shaft 304 and an external shaft 305 coaxially and fixedly connected on both sides of the central portion 301. The first rotating shaft 304 serves as an extension, and the end of the first rotating shaft 304 contacts the inner wall of the housing 1. The external shaft 305 is inserted into the inner wall of the housing 1 or extends outside the housing 1.

[0071] A semicircular groove 3012 is recessed in the middle of the circumferential surface of the middle portion 301, and the cross-sectional shape of the semicircular groove 3012 is semicircular. A ring-shaped ferrule 3011 is fixed to each side of the circumferential surface of the middle portion 301, and the gap between the ferrule 3011 and the circumferential surface of the middle portion 301 is less than or equal to the thickness of the sandpaper 303. A toothed ring 302 is provided on the side of the ferrule 3011 facing away from the semicircular groove 3012, and the toothed ring 302 is fixedly connected to the middle portion 301. The outer diameter of the toothed ring 302 is larger than the outer diameter of the ferrule 3011, which ensures that when the toothed rings 302 of two peelers 3 in the same group are meshed and connected, the ferrules 3011 of the two peelers 3 contact each other and may even be squeezed.

[0072] Sandpaper 303 is provided on the middle part 301, and the middle of the sandpaper 303 is recessed inside the semicircular groove 3012. The two ends of the sandpaper 303 are inserted into the gap between the clamping sleeve 3011 and the middle part 301. The clamping sleeve 3011 presses the sandpaper 303. The sandpaper 303 located inside the semicircular groove 3012 also forms an arc shape, and the diameter of the arc shape is the same as the diameter of the welding wire 12.

[0073] The toothed rings 302 of the two peelers 3 in the same peeling device are meshed and connected, and the clamping sleeves 3011 are in contact with each other. If the gap between the clamping sleeve 3011 and the middle part 301 is smaller than the thickness of the sandpaper 303, the clamping sleeve 3011 has a certain elasticity. When the sandpaper 303 needs to be inserted, the clamping sleeve 3011 can be turned inside out, the sandpaper 303 is inserted, and then reset. When the two peelers 3 in the same group are assembled in place, the clamping sleeves 3011 of the two groups squeeze each other, pressing the sandpaper 303 tightly.

[0074] One of the circumscribed shafts 305 is passed through the outside of the housing 1 , and a driven wheel 306 is fixed to the end of the circumscribed shaft 305 outside the housing 1 . A motor is fixed to the outside of the housing 1 , and the motor drives the driven wheel 306 to rotate.

[0075] Because the sandpaper 303 of the two strippers 3 in the same group cannot touch due to the action of the clamping sleeve 3011, a gap is left between the two sandpaper 303. This leaves two unsanded gaps on the welding wire 12 when the stripping is performed. To solve this problem, in this embodiment, two sets of stripping devices are arranged in a front-to-rear manner along the axis of the first through hole 1021 within the housing 1. The two sets of stripping devices are arranged at a 90° angle (i.e., the axes of the strippers 3 included in the two sets of stripping devices are perpendicular to each other). Since the housing 1 in this embodiment is rectangular, a 90° angle facilitates installation. If the housing 1 is polygonal with 5 or more sides, the angle between the two stripping devices can be between 30° and 90°, as long as the sandpaper 303 of the rear stripping device can cover the areas that the sandpaper 303 of the front stripping device cannot reach.

[0076] At least two cleaning devices 4 are located between the two groups of peeling devices and behind the rear peeling device. Multiple cleaning devices 4 in each area are positioned on either side of the axis of the first through-hole 1021. The front peeling device is arranged horizontally, while the rear peeling device and all cleaning devices 4 are arranged vertically. Alternatively, the front peeling device is arranged vertically, while the rear peeling device and all cleaning devices 4 are arranged vertically or in parallel.

[0077] The cleaning device 4 includes a roller 401 with a plurality of bristles 402 fixed on its circumferential surface. A second shaft 403 is coaxially fixed to both ends of the roller 401 . The end of the second shaft 403 passes through the outside of the housing 1 and is fixed with a pulley 404 .

[0078] A second motor 8 is fixed to the front end of the housing 1 , and a second gear 801 is fixed to the output shaft of the second motor 8 . The second gear 801 is meshed and connected with the driven wheel 306 of the front end peeling device.

[0079] The driven wheel 306 of the rear end peeling device is at the upper end of the outer shell 1. The driven wheel 306 of the rear end peeling device includes two layers of coaxially fixed gear parts and pulley parts. The pulley part of the driven wheel 306 and all the pulleys 404 are jointly provided with a synchronous belt 6.

[0080] A first motor 7 is fixed to the side wall of the housing 1 , and a first gear 701 is fixed to the output shaft of the first motor 7 . The first gear 701 is meshed and connected with the gear portion of the driven wheel 306 of the rear end peeling device.

[0081] The cleaning device 4 cleans the surface of the stripped welding wire 12. However, after the sandpaper 303 polishes the welding wire 12, a certain amount of metal powder will remain on its surface. In order to not affect the polishing effect of the sandpaper 303 and extend its service life, this metal powder needs to be removed immediately. To remove this powder, this embodiment provides a brush 5 at the end of the stripper 3 that is away from the axis of the first through hole 1021. The brush 5 contacts the sandpaper 303 and cleans the sandpaper 303 as the sandpaper 303 rotates. The brush 5 is fixed to the inner wall of the housing 1. In places where it is inconvenient to fix the brush 5, such as the window hole 1031, a support plate 1032 is added for overlap. The support plate 1032 is fixed to the housing 1, and the brush 5 is fixed to the support plate 1032.

[0082] Since the welding wire 12 has different specifications, that is, different diameters, in order to be suitable for welding wires 12 of different diameters, the stripper 3 in this embodiment has different specifications. The sizes of the middle part 301 and the auxiliary structures of the middle part 301 (the sleeve 3011, the semicircular groove 3012 and the gear ring 302) of the stripper 3 of different specifications are different, but the sizes of the first rotating shaft 304 and the circumferential shaft 305 are the same.

[0083] A waist-shaped hole 106 is provided on the end surface of the housing 1 corresponding to the circumscribed shaft 305 of one peeler 3 in each peeling device group. The circumscribed shaft 305 passes through the waist-shaped hole 106, and the length direction of the waist-shaped hole 106 is perpendicular to the axis of the first through hole 1021. This facilitates the movement of the circumscribed shaft 305 within the waist-shaped hole 106, thereby increasing the distance between the axes of the two peelers 3 in the same group and accommodating peelers 3 of different specifications.

[0084] The housing 1 is provided with a distance adjusting device 9 outside, which can make the tooth rings 302 of the two peelers 3 in the same group mesh with each other. The distance adjusting device 9 includes a pressure rod 901, a first arc plate 902 and a horizontal rod 903.

[0085] The first curved plate 902 corresponds to the waist-shaped hole 106 one by one, and the first curved plate 902 contacts the circumferential surface of the circumscribed shaft 305. A pressure rod 901 is fixed to the end of the first curved plate 902 facing away from the circumscribed shaft 305, and the ends of the two pressure rods 901 on both sides of the shell 1 are fixedly connected to a horizontal rod 903.

[0086] A U-shaped frame 108 is fixed to the end face of the housing 1 on one side where the horizontal rod 903 resides. Slideways are provided on the two parallel end faces of the U-shaped frame 108 (i.e., the ends perpendicular to the horizontal rod 903). The horizontal rod 903 passes through the slideways. An adjustment bolt 10 is threadedly connected to the end face of the U-shaped frame 108 parallel to the horizontal rod 903, with one end of the adjustment bolt 10 contacting the horizontal rod 903. After replacing the peeler 3, the adjustment bolt 10 is rotated to squeeze the horizontal rod 903. The first curved plate 902 pushes one peeler 3 toward the other peeler 3 in the same group until the gear rings 302 of the two groups engage. To prevent the first curved plate 902 from squeezing the circumscribed shaft 305 and affecting its rotation, a rotating bearing is provided on the circumscribed shaft 305 that contacts the first curved plate 902. The rotating bearing contacts the first curved plate 902.

[0087] In order to collect the metal powder generated by friction, an exhaust connector 109 connected to the interior of the shell 1 is provided below the center of the bottom surface of the base plate 101. An exhaust pipe 22 is connected to the opening of the exhaust connector 109. A second air pump 2201 is connected to the exhaust pipe 22. A filter device 16 is provided at the end of the exhaust pipe 22. The filter device 16 can use a dust bag.

[0088] When the welding wire is first passed through the housing 1, the end of the wire may sink due to its own gravity after passing through the front stripping device, making it difficult to pass through the rear stripping device or hindering the welding wire from passing through the rear first through hole 1021. To solve this problem, this embodiment adds a vertically movable support device 11, which is disposed inside the exhaust connector 109.

[0089] The supporting device 11 includes two second curved plates 1101, a supporting rod 1103 and a control rod 1104. The two second curved plates 1101 are respectively located between the two groups of peeling devices and between the rear peeling device and the first through hole 1021 at the rear end.

[0090] The second curved plate 1101 is provided with a plurality of second through holes 1102, and the vertically arranged support rods 1103 are fixedly connected to the bottom surface of the second curved plate 1101. The lower ends of the two support rods 1103 are fixedly connected to a horizontally arranged control rod 1104. The width of the control rod 1104 is smaller than the width of the exhaust joint 109, so as not to affect the exhaust of the exhaust joint 109.

[0091] The exhaust connector 109 is a rectangular tube. Vertically arranged slide grooves are provided on the front and rear end faces of the exhaust connector 109. The two ends of the control rod 1104 are respectively passed through the two slide grooves to the outside of the exhaust connector 109. The control rod 1104 located on the outside of the exhaust connector 109 is held by hand to control the control rod 1104 to move up and down along the slide groove. When it moves to the top dead center, the axis of the second curved plate 1101 coincides with the axis of the first through hole 1021.

[0092] In order to prevent the slide groove on the exhaust joint 109 from affecting the air extraction, when the control rod 1104 moves down to the bottom dead point, a blocking plate 13 can be inserted into the slide groove, and the blocking plate 13 and the control rod 1104 together block the slide groove.

[0093] Since heat is generated when the surface of the welding wire 12 is ground, the ground welding wire 12 is also prone to generate a new oxide layer after contacting with oxygen. In order to avoid this phenomenon, a gas protection system is added in this embodiment.

[0094] The gas protection system includes a guide sleeve 2 , a dust collecting box 15 , a gas cylinder 17 , a pressure relief pipe 18 , an air inlet pipe 19 , a pressure sensor 20 and an oxygen concentration sensor 21 .

[0095] The guide sleeve 2 is fixed to the first through-holes 1021 at the front and rear ends of the housing 1. A truncated cone-shaped or cylindrical through-hole is provided in the center of the guide sleeve 2, coaxially connected to the first through-hole 1021. An annular air passage 201 is provided at the end of the guide sleeve 2 facing away from the housing 1, coaxially arranged with the first through-hole 1021. A second air inlet connector 202 is provided on the outside of the guide sleeve 2, which is connected to the annular air passage 201. An air injection hole 203 connects the central through-hole of the guide sleeve 2 to the annular air passage 201.

[0096] In order to cool the friction part of the welding wire, a first air inlet connector 107 is provided on the end face of the shell 1 and is connected to the interior thereof. Each group of peeling devices corresponds to a first air inlet connector 107, and the first air inlet connector 107 is arranged opposite to the contact part of each group of two peelers 3.

[0097] One end of the air inlet pipe 19 is connected to each first air inlet connector 107 and each second air inlet connector 202 through an air distribution pipe. A first air pump 1901 is provided on the air inlet pipe 19, and the other end of the air inlet pipe 19 is connected to the dust box 15. The first air pump 1901 pumps the air inside the dust box 15 into the interior of the housing 1.

[0098] Filter device 16 is installed inside dust box 15, which is filled with protective gas (such as carbon dioxide, nitrogen, a mixture of the two, or argon, a non-oxygen-free, non-flammable gas). A gas cylinder 17 containing protective gas is connected to the interior of dust box 15 via a pipeline, which is equipped with a first solenoid valve 1701. A pressure relief pipe 18 is also connected to the outside of dust box 15, and is equipped with a second solenoid valve 1801.

[0099] A pressure sensor 20 and an oxygen concentration sensor 21 are provided in the area between the dust box 15 or the air intake pipe 19 and the first air pump 1901 and the dust box 15. The pressure sensor 20 and the oxygen concentration sensor 21, the first solenoid valve 1701 and the second solenoid valve 1801 are all electrically connected to the control device. The control device adopts a PLC or a single-chip microcomputer and is fixed on the dust box 15.

[0100] When in use, first add a certain pressure of protective gas into the dust box 15, and then the first air pump 1901 pumps the protective gas into the shell 1, and then discharges it from the exhaust joint 109, taking away heat and dust, and flows into the filter device 16 through the outlet pipe 22. After filtering the dust, the clean gas enters the dust box 15 and circulates.

[0101] The air injection holes 203 form an air curtain to reduce or even prevent external air from flowing into the interior of the housing 1 .

[0102] The oxygen concentration sensor 21 detects the oxygen concentration of the shielding gas flowing within the shielding gas system. When the oxygen concentration exceeds a threshold, the first solenoid valve 1701 opens, and the gas cylinder 17 injects shielding gas into the dust box 15 to reduce the oxygen concentration. When the pressure exceeds the threshold, the second solenoid valve 1801 opens to release the pressure.

[0103] The air inlet pipe 19 and the air outlet pipe 22 are both provided with electromagnetic valves, which are closed when the shielding gas system is not working. A cooler can be connected in series on the air inlet pipe 19 to cool the shielding gas.

[0104] A method for using an automatic stripping device for magnesium alloy welding wire comprises the following steps:

[0105] A. Push the second curved plate 1101 upward. When the control rod 1104 moves to the top dead center, the axis of the second curved plate 1101 coincides with the axis of the first through hole 1021.

[0106] B. Insert the welding wire 12 from the first through hole 1021 at the front end. The welding wire 12 moves from front to back. Power on the motor. The peelers 3 start to rotate. The two peelers 3 in each group rotate in opposite directions (as indicated by the attached Figure 14As shown), a force is applied to the welding wire 12 to move toward the rear end, pushing the welding wire 12 onto the second curved plate 1101, and then onto a group of strippers 3 at the rear end. After passing through the rear end strippers 3, the welding wire 12 is guided by another second curved plate 1101 to penetrate into the interior of the first through hole 1021 at the rear end, and then moves out of the housing 1;

[0107] C. The end of the welding wire 12 removed from the housing 1 is fixed on a straightening machine, welding machine or winding machine, which draws the welding wire and lowers the second arc plate 1101. Then, the rotation direction of the peeling machine 3 is adjusted so that the two peeling machines 3 in each group rotate in opposite directions (by the attached Figure 15 As shown), optimizing the stripping effect of the welding wire 12;

[0108] D. Turn on the second air pump 2201. The metal powder generated by the peeling is pumped into the filter device 16 by the second air pump 2201 for collection.

[0109] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An automatic stripping device for magnesium alloy welding wire, characterized by: The invention comprises a shell, wherein the center positions of the two axial end plates of the shell are both provided with a first through hole, and at least one set of peeling devices is provided inside the shell, and each set of peeling devices comprises two peelers symmetrically arranged around the axis of the first through hole. The peeler includes a middle part and a first rotating shaft and an external shaft that are coaxially fixedly connected in sequence on both sides of the middle part. The middle of the middle circumferential surface is concave with an annular semicircular groove. The middle circumferential surface is located on both sides of the semicircular groove and is fixed with a circle of annular clamping sleeves. The gap between the clamping sleeve and the middle circumferential surface is less than or equal to the thickness of sandpaper. A toothed ring is provided on the side of the clamping sleeve away from the semicircular groove. The toothed ring is fixedly connected to the middle part, and the outer diameter of the toothed ring is larger than the outer diameter of the clamping sleeve. The middle part is provided with sandpaper, the middle of the sandpaper is concave in the semicircular groove, and the two ends of the sandpaper are inserted into the gap between the sleeve and the middle part. The tooth rings of the two peelers of the same peeling device are meshed and connected with each other, and the sleeves are in contact with each other. The external shaft is passed through the outside of the shell, and a driven wheel is fixed at the end of one of the external shafts. A motor is fixed outside the shell, and the motor drives the driven wheel to rotate. A waist-shaped hole is provided on the end surface of the shell corresponding to the external shaft of a peeler in each peeling device. The external shaft passes through the waist-shaped hole. The length direction of the waist-shaped hole is perpendicular to the axis of the first through hole. A distance adjustment device is provided outside the shell, and the distance adjustment device includes a pressure rod, a first arc plate and a horizontal rod. The first arc plate corresponds to the waist-shaped hole one by one, and the first arc plate contacts the circumferential surface of the circumscribed shaft. A pressure rod is fixed on the end of the first arc plate away from the circumscribed shaft, and the ends of the two pressure rods on both sides of the shell are fixedly connected to a horizontal rod. A U-shaped frame is fixed on the end face of one side of the shell where the horizontal rod is located. A slide groove is provided on the two parallel end faces of the U-shaped frame. The horizontal rod passes through the slide groove. An adjusting bolt is threadedly connected on the end face of the U-shaped frame parallel to the horizontal rod, and one end of the adjusting bolt is in contact with the horizontal rod.

2. The automatic peeling device for magnesium alloy welding wire according to claim 1, characterized in that: At least two cleaning devices are provided inside the shell at the rear end of the peeling device, and the multiple cleaning devices are respectively arranged on both sides of the axis of the first through hole.

3. The automatic peeling device for magnesium alloy welding wire according to claim 2, characterized in that : The cleaning device includes a roller, a plurality of bristles are fixed on the circumference of the roller, a second shaft is coaxially fixed on both ends of the roller, and the end of the second shaft is passed through the outside of the shell. The motor drives the second rotating shaft to rotate.

4. The automatic peeling device for magnesium alloy welding wire according to claim 1, 2 or 3, characterized in that : Two groups of peeling devices are arranged front and back along the axis of the first through hole inside the shell, with an angle of 90° between the two groups of peeling devices. At least two cleaning devices are provided between the two groups of peeling devices and behind the rear end peeling device.

5. The automatic peeling device for magnesium alloy welding wire according to claim 4, characterized in that: The front peeling device is arranged horizontally, and the rear peeling device and all cleaning devices are arranged vertically. A second motor is fixed to the front end of the housing, and a second gear is fixed to the output shaft of the second motor. The second gear is meshed and connected with the driven wheel of the front end peeling device. A pulley is fixed to the end of the second rotating shaft at the upper end of the cleaning device. The driven wheel of the rear end peeling device is at the upper end of the outer shell. The driven wheel of the rear end peeling device includes two layers of fixedly connected gear parts and a pulley part. The pulley part of the driven wheel and all the pulleys are together equipped with a synchronous belt. A first motor is fixed on the side wall of the shell, a first gear is fixed on the output shaft of the first motor, and the first gear is meshed and connected with the gear portion of the driven wheel of the rear end peeling device.

6. The automatic stripping device for magnesium alloy welding wire according to claim 5, characterized in that: The housing includes a bottom plate, two axial end plates, two radial end plates and a top plate. The two axial end plates are respectively arranged at the front and rear ends of the bottom plate, and the bottom surface of the axial end plates is fixedly connected to the bottom plate. The two radial end plates are respectively arranged at the left and right ends of the bottom plate, and the radial end plates are fixedly connected to the axial end plates by bolts. The top plate is located above the axial end plates and is fixedly connected to the axial end plates by bolts. There are several mounting plates fixed on the left and right sides of the bottom plate, each with bolt holes or waist-shaped holes. A window hole is provided on one of the radial end plates, and a transparent plate is provided on the window hole.

7. The automatic peeling device for magnesium alloy welding wire according to claim 6, characterized in that: An exhaust joint connected to the inside of the shell is provided below the center of the bottom surface of the base plate. A supporting device is provided inside the exhaust joint. The supporting device includes two second curved plates, a supporting rod and a control rod. The two second curved plates are respectively located between the two groups of peeling devices and between the rear peeling device and the first through hole at the rear end. The second curved plate is provided with a plurality of second through holes, the vertically arranged support rods are fixedly connected to the bottom surface of the second curved plate, and the lower ends of the two support rods are fixedly connected to a horizontally arranged control rod. The exhaust joint is a rectangular tube. Vertically arranged slide grooves are provided on the front and rear end faces of the exhaust joint. The two ends of the control rod are respectively passed through the two slide grooves to the outside of the exhaust joint.

8. The automatic peeling device for magnesium alloy welding wire according to claim 7, characterized in that : An air outlet pipe is connected through the opening of the exhaust joint, a second air pump is connected to the air outlet pipe, and a filtering device is provided at the end of the air outlet pipe.

9. The method for using the automatic peeling device for magnesium alloy welding wire according to claim 8, characterized in that: The following steps are involved: A. Push the second curved plate upward. When the control rod moves to the top dead center, the axis of the second curved plate coincides with the axis of the first through hole. B. Insert the welding wire from the first through-hole at the front end. The welding wire moves from front to back. The motor is powered on. The strippers start to rotate, and the two strippers in each group rotate towards each other, giving the welding wire a force to move toward the rear end, pushing the welding wire onto the second curved plate. Then, the welding wire passes through the rear end stripper and is guided by another second curved plate into the first through-hole at the rear end, and then moves out of the housing. C. The end of the welding wire removed from the housing is fixed on a straightener, a welding machine, or a winding machine, which draws the welding wire and lowers the second arc plate. The rotation direction of the strippers is then adjusted so that the two strippers in each group rotate in opposite directions to optimize the stripping effect on the welding wire. D. Turn on the second air pump, and the metal powder produced by peeling is pumped into the filter device by the second air pump for collection.

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