Argon arc welding wire feeding mechanism for large reactor processing

Abstract

The application discloses an argon arc welding wire feeding mechanism for large reactor processing, and relates to the technical field of reactor welding. The argon arc welding wire feeding mechanism comprises a welding torch, a welding wire, a feeding part, and a feeding part. The feeding part is installed at the bottom of the welding torch and is used for storing the welding wire. The feeding part comprises a connecting frame fixedly installed at the bottom of the welding torch. A storage box for storing the welding wire is fixedly installed on the connecting frame. A pressing assembly matched with the welding wire and a pushing assembly are installed on the storage box. The feeding part is installed at the bottom of the welding torch. The argon arc welding wire feeding mechanism can stably and continuously feed strip-shaped welding wires with different thicknesses, effectively improves the welding efficiency, preheats the welding wire before welding, reduces the temperature difference before welding, shortens the heating time of the welding wire, improves the melting efficiency of the welding wire and the welding efficiency, straightens the welding wire, keeps the welding wire in a straight state before welding, ensures the distance between the welding wire and the welding torch, and effectively improves the welding quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reactor welding, in particular to an argon arc welding wire feeding mechanism for large reactor processing. BACKGROUND

[0002] Large reactors, generally refers to large equipment used in chemical engineering, nuclear engineering or other related fields, which are used to carry out various chemical reactions or physical processes, according to different application fields, the type and function of the reactor are also different, and the scale of these reactors is large, so the sealing is extremely important, for the splicing part of the reactor, welding sealing needs to be used, and in general, the reactor welding adopts argon arc welding. Because the heat input of argon arc welding is relatively low, it can effectively reduce the thermal deformation generated in the welding process, and maintain the integrity and precision of the structure. For the welding of large reactors, this can significantly improve the precision and matching degree of the components. Argon arc welding needs to use a welding gun and a welding wire. In the welding process, it is necessary to ensure the stable feeding of the welding wire, so a wire feeding mechanism needs to be matched to complete it.

[0003] As disclosed in the publication No. CN115815752B, a kind of argon arc welding wire feeding device for robot, it includes wire feeding body, body support frame, angle adjusting device and adjusting support, wire feeding body includes wire feeding support, wire feeding support is connected with wire feeding drive device;The wire feeding device can conveniently adjust the position of the welding wire, and the operation is convenient, which can effectively meet different welding needs;

[0004] Publication No. CN116748639B discloses a kind of argon arc welding wire feeding device for robot, it includes box body, first rotating shaft is rotatably connected between the inner wall of the two sides of the box body, driven roller is fixedly installed on the outer side wall of the first rotating shaft, drive motor is fixedly installed on the outer side wall of the box body, one end of the first rotating shaft penetrates one inner side wall of the box body and is fixedly connected with the output shaft of drive motor;The wire feeding device can automatically clean the surface of the welding wire during the conveying of the welding wire, solve the problem that too much dust and small impurities on the surface of the welding wire affect the subsequent welding quality, ensure the welding quality, can automatically suck and collect the dust or impurities cleaned from the surface of the welding wire, high degree of automation, can automatically preheat the welding wire, without setting additional preheating equipment, improve work efficiency, without manual operation, compared with prior art, the overall structure is more compact, and the linkage is strong.

[0005] The two wire receiving and feeding devices can perform wire receiving and feeding operations, and the welding wire has two forms, one is in a roll state, and the other is in a single straight state. The welding wire in the roll state is curled, and the welding wire in the straight state is also bent in some cases. The two wire receiving and feeding devices cannot straighten the welding wire during the wire receiving and feeding operations, which can cause the welding end of the welding wire to deviate, change the distance between the welding wire and the welding gun, and affect the welding effect. Meanwhile, the welding wire in the roll state is convenient to feed and the feeding technology is relatively mature. However, the welding wire in the straight state is difficult to feed, and the current feeding mode has poor feeding efficiency, poor stability, discontinuous feeding, and is prone to cause wire breakage, thereby affecting the welding quality and welding efficiency.

[0006] Therefore, a new type of argon arc welding wire feeding mechanism for large reactor processing can be used to solve the problems in the prior art. SUMMARY

[0007] The purpose of the present application is to solve the problems in the prior art and provide an argon arc welding wire feeding mechanism for large reactor processing.

[0008] To achieve the above purpose, the present application adopts the following technical solutions:

[0009] An argon arc welding wire feeding mechanism for large reactor processing, comprising a welding gun, a welding wire, a feeding part installed at the bottom of the welding gun for storing the welding wire, the feeding part comprising a connecting frame fixedly installed at the bottom of the welding gun, a storage box for storing the welding wire fixedly installed on the connecting frame, a pressing assembly and a pushing assembly installed on the storage box and matched with the welding wire, a feeding part installed at the bottom of the welding gun for receiving the welding wire in the storage box and processing and conveying the welding wire, the feeding part comprising a connecting shell installed at the bottom of the welding gun through a clamping assembly, a conveying assembly installed on the connecting shell and matched with the welding wire, a straightening part installed at the end of the welding gun for straightening the welding wire sent by the feeding part and keeping the distance between the welding wire and the welding gun stable, the straightening part comprising a fixed clamp fixedly installed at the end of the welding gun, and a straightening assembly installed on the fixed clamp and matched with the welding wire.

[0010] Preferably, the pressing assembly comprises an elastic steel plate installed inside the storage box and matched with the welding wire in a U-shaped manner, the two ends of the elastic steel plate are slidably connected with the storage box, a plurality of rotating rods are rotatably installed on the elastic steel plate, one pull rod is commonly rotatably installed at the ends of the plurality of rotating rods away from the elastic steel plate, two limiting plates are fixedly installed on the pull rod, the two limiting plates penetrate and extend out of the top of the storage box, and a size adjusting mechanism matched with the elastic steel plate is installed on the storage box.

[0011] Preferably, the size adjusting mechanism comprises a threaded ring fixedly installed on the top of the storage box, a bolt threadedly rotatably installed on the threaded ring, the bolt penetrating into the storage box, and the end of the bolt inside the storage box being rotatably connected with the pull rod.

[0012] Preferably, the pushing assembly comprises a motor fixedly installed on the outside of the storage box, a screw rod rotatably installed on the side wall of the storage box through a bearing, a nut threadedly rotatably installed on the screw rod, a pushing plate fixedly installed on the nut, a plug cone fixedly installed on the pushing plate and matched with the welding wire, an extension rod fixedly installed on the side wall of the storage box, and a circular through hole provided in the side edge of the storage box and through which the plug cone passes.

[0013] Preferably, the clamping assembly comprises a mounting frame fixedly installed on the bottom of the welding gun, a clamping block fixedly installed on the connecting shell and matched with the mounting frame, and a threaded rod fixedly installed between the mounting frame and the clamping block.

[0014] Preferably, the material transferring assembly comprises a fixed shell fixedly installed on the connecting shell, a motor fixedly installed on the fixed shell, a gear one rotatably installed on the fixed shell, a driving wheel fixedly installed on the gear one and matched with the welding wire, a pressing block rotatably installed on the fixed shell, a driven wheel rotatably installed on the pressing block, a gear two fixedly installed on the driven wheel and engaged with the gear one, a limiting sleeve fixedly installed on the fixed shell and matched with the welding wire, and a pressure adjusting mechanism installed between the pressing block and the fixed shell, and a heating mechanism installed on the connecting shell and matched with the welding wire.

[0015] Preferably, the pressure adjusting mechanism comprises an adjusting screw rotatably installed on the fixed shell, a threaded sleeve threadedly rotatably installed on the adjusting screw, the threaded sleeve being slidably connected with the fixed shell, a pressing spring fixedly installed on the threaded sleeve, and the pressing spring being fixedly connected with the pressing block.

[0016] Preferably, the heating mechanism comprises a heat supply module fixedly installed on the connecting shell, a heating ring fixedly installed in the connecting shell and sleeved on the welding wire, and a heat dissipation fan fixedly installed on the outside of the connecting shell.

[0017] Preferably, the straightening assembly comprises a straightening cylinder fixedly installed on the fixed clamp, a plurality of connecting plates slidably installed in the straightening cylinder, a plurality of straightening wheels rotatably installed on each connecting plate and matched with the welding wire, and a zooming mechanism installed on the straightening cylinder and matched with the plurality of connecting plates.

[0018] Preferably, the scaling mechanism comprises a plurality of threaded rings installed on the straightening cylinder through threaded grooves, a plurality of threaded rings are fixedly installed on the adjusting cylinder, a push ring is rotatably installed on each threaded ring, each push ring is in sliding connection with the straightening cylinder, a plurality of wedges are fixedly installed on each push ring, a plurality of adjusting blocks corresponding to the corresponding wedges are fixedly installed on each connecting plate, a sliding block is fixedly installed on each wedge, and a sliding groove matched with the corresponding sliding block is formed in each adjusting block.

[0019] Compared with the prior art, the present application has the advantages that:

[0020] 1、The argon arc welding wire feeding mechanism can store the strip-shaped welding wire through the storage box, arrange the welding wire accumulated in the storage box by cooperating with the use of the pressing assembly, so that only one welding wire is located at the bottom, and then push the welding wire at the bottom out of the storage box through the pushing assembly, so that the strip-shaped welding wire can be fed stably and continuously, the problem of difficulty in strip-shaped welding wire feeding is solved, multiple welding wires can be stored at a time, the welding time is long, the welding efficiency is effectively improved, the position of the elastic steel plate is adjusted to adjust the distance between the elastic steel plate and the bottom of the storage box, different sizes of welding wires are limited, and the application range is wider.

[0021] 2、The argon arc welding wire feeding mechanism can feed the welding wire out of the storage box through the transmission assembly, adjust the pressure between the pressing block and the welding wire according to the thickness of the welding wire by arranging the pressure adjusting assembly in the transmission assembly, ensure the stable transmission of the welding wire, and the heating mechanism is arranged in the transmission assembly, the welding wire is preheated, the welding wire reaches a certain temperature before entering the welding gun for welding, the melting of the welding wire during welding is accelerated, the welding efficiency is improved, and in addition, the heat dissipation fan is arranged to dissipate the heat generated during heating, reduce the temperature on the connecting shell, and protect other structures on the connecting shell.

[0022] 3、The argon arc welding wire feeding mechanism can straighten the welding wire transmitted by the transmission assembly through the straightening assembly, ensure that the welding wire is in a straight state before entering the welding, so that the distance between the welding wire and the welding gun is stable, and the welding quality is improved, and the straightening force on the welding wire can be adjusted according to the hardness and thickness of the welding wire during straightening, so that straightening of various types of welding wires can be realized, and the application range is wide.

[0023] In summary, the present application can stably and continuously feed the strip-shaped welding wire with different thicknesses, effectively improve the welding efficiency, preheat the welding wire before welding, reduce the temperature difference before welding, shorten the heating time of the welding wire, thereby improving the melting efficiency of the welding wire and the welding efficiency, in addition, the welding wire can be straightened to keep the welding wire straight before welding, ensure the distance between the welding wire and the welding gun, thereby effectively improving the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0024] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings, wherein:

[0025] Figure 1 A structural schematic diagram of an argon arc welding wire feeding mechanism for large reactor processing is provided for the present application;

[0026] Figure 2 For Figure 1 A schematic detail view of the planar structure along one of the angles;

[0027] Figure 3 For Figure 1 A schematic detail view of the structure after rotating a certain angle;

[0028] Figure 4 For Figure 1 A schematic detail view of the structure after removing the welding gun;

[0029] Figure 5 For Figure 4 An enlarged structural schematic detail view of the storage box and the motor;

[0030] Figure 6 For Figure 5 A schematic detail view of the planar structure along one of the angles;

[0031] Figure 7 For Figure 6 A schematic detail view of the storage box along the D-D section;

[0032] Figure 8 For Figure 7 A schematic detail view of the planar structure along one of the angles;

[0033] Figure 9 For Figure 7 A schematic detail view of the structure after removing the storage box, the motor and the lead screw;

[0034] Figure 10 For Figure 7 An enlarged structural schematic detail view of the motor and the lead screw and other components;

[0035] Figure 11 For Figure 4 An enlarged structural schematic detail view of the material transmission assembly;

[0036] Figure 12 Figure 1 is a perspective view of the structure of the present application; Figure 11 Figure 2 is a perspective view of the structure of the present application after rotating a certain angle;

[0037] Figure 13 Figure 3 is a perspective view of the structure of the present application after rotating a certain angle; Figure 12 Figure 4 is a perspective view of the structure of the present application after rotating a certain angle;

[0038] Figure 14 Figure 5 is a perspective view of the structure of the present application after rotating a certain angle; Figure 13 Figure 6 is a perspective view of the structure of the present application after rotating a certain angle;

[0039] Figure 15 Figure 7 is a perspective view of the structure of the present application after rotating a certain angle; Figure 14 Figure 8 is a perspective view of the structure of the present application after rotating a certain angle;

[0040] Figure 16 Figure 9 is a perspective view of the structure of the present application after rotating a certain angle; Figure 4 Figure 10 is a perspective view of the structure of the present application after rotating a certain angle;

[0041] Figure 17 Figure 11 is a perspective view of the structure of the present application after rotating a certain angle; Figure 16 Figure 12 is a perspective view of the structure of the present application after rotating a certain angle;

[0042] Figure 18 Figure 13 is a perspective view of the structure of the present application after rotating a certain angle; Figure 17 Figure 14 is a perspective view of the structure of the present application after rotating a certain angle;

[0043] Figure 19 Figure 15 is a perspective view of the structure of the present application after rotating a certain angle; Figure 18 Figure 16 is a perspective view of the structure of the present application after rotating a certain angle;

[0044] Figure 20 Figure 17 is a perspective view of the structure of the present application after rotating a certain angle; Figure 19 Figure 18 is a perspective view of the structure of the present application after rotating a certain angle;

[0045] Figure 21 Figure 19 is a perspective view of the structure of the present application after rotating a certain angle; Figure 20 Figure 20 is a perspective view of the structure of the present application after rotating a certain angle;

[0046] Figure 22 Figure 21 is a perspective view of the structure of the present application after rotating a certain angle; Figure 21 Figure 22 is a perspective view of the structure of the present application after rotating a certain angle;

[0047] Figure 23 Figure 23 is a perspective view of the structure of the present application after rotating a certain angle; Figure 22 Figure 24 is a perspective view of the structure of the present application after rotating a certain angle;

[0048] Figure 24 Figure 25 is a perspective view of the structure of the present application after rotating a certain angle; Figure 23 Figure 26 is a perspective view of the structure of the present application after rotating a certain angle.

[0049] In the figure: 1 welding torch, 2 storage box, 3 material conveying assembly, 4 straightening assembly, 5 motor, 6 screw rod, 7 plug cone, 8 push plate, 9 nut, 10 telescopic rod, 11 connecting frame, 12 mounting frame, 13 connecting shell, 14 welding wire, 15 cooling fan, 16 gear one, 17 heating ring, 18 heat supply module, 19 motor, 20 heating resistance, 21 fixed shell, 22 adjusting screw rod, 23 pressing block, 24 pressing spring, 25 limiting sleeve, 26 driving wheel, 27 straightening cylinder, 28 adjusting cylinder, 29 fixed clamp, 30 threaded ring, 31 push ring, 32 threaded groove, 33 straightening wheel, 34 connecting plate, 35 wedge block, 36 adjusting block, 37 sliding block, 38 sliding groove, 39 bolt, 40 elastic steel plate, 41 rotating rod, 42 pull rod, 43 limiting plate. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0051] Embodiment one: refer to Figures 1-10 A grouting device for karst cave in karst tunnel development area, comprising a welding torch 1, further comprising a welding wire 14; a feeding part is installed at the bottom of the welding torch 1 and used for storing the welding wire 14, the feeding part comprises a connecting frame 11 fixedly installed at the bottom of the welding torch 1, the connecting frame 11 is fixedly installed with a storage box 2 used for storing the welding wire 14, and the storage box 2 is installed with a pressing assembly matched with the welding wire 14.

[0052] The connecting frame 11 is connected with the welding torch 1 by welding, and the connecting frame 11 is provided with a passing hole matched with the welding wire 14; the end surface of the storage box 2 is V-shaped, and the size of the opening at the upper part of the storage box 2 is larger than that of the bottom, so that the strip-shaped welding wire 14 is horizontally placed in the storage box 2 (the storage box 2 has two feeding openings, and each time the feeding is only carried out from one of the feeding openings, so that the welding wire 14 is not stuck), and as the welding wire 14 at the bottom is drawn out, the welding wire 14 at the upper part will sink under the action of gravity, so as to realize automatic and continuous feeding of the welding wire 14.

[0053] The pressing assembly comprises an elastic steel plate 40 installed in the U-shaped inside of the storage box 2 and matched with the welding wire 14, the two ends of the elastic steel plate 40 are in sliding connection with the storage box 2, a plurality of rotating rods 41 are rotatably installed on the elastic steel plate 40, one pull rod 42 is rotatably installed at the ends of the plurality of rotating rods 41 away from the elastic steel plate 40, two limiting plates 43 are fixedly installed on the pull rod 42, the two limiting plates 43 penetrate and extend out of the top of the storage box 2, and a size adjusting mechanism matched with the elastic steel plate 40 is installed on the storage box 2.

[0054] The elastic steel plate 40 is an existing steel sheet which can be deformed to a certain extent and is a common material, and will not be described in detail here. Slides are fixed at the two ends of the elastic steel plate 40, and a sliding groove matched with the slides is formed in the top wall of the storage box 2. When the slides slide in the sliding groove, the opening of the upper part of the elastic steel plate 40 will be enlarged or reduced, so that the distance between the bottom of the elastic steel plate 40 and the bottom of the storage box 2 will change, thereby fixing the welding wire 14 of different sizes.

[0055] The size adjusting mechanism comprises a threaded ring fixedly installed on the top of the storage box 2, and a threaded bolt 39 rotatably installed on the threaded ring, the threaded bolt 39 penetrates and extends into the inside of the storage box 2, and the end of the threaded bolt 39 located in the inside of the storage box 2 is in rotary connection with the pull rod 42.

[0056] When the threaded bolt 39 is rotated, it will move up and down on the storage box 2 under the action of the threaded ring, thereby driving the V-shaped elastic steel plate 40 to move up and down at the bottom of the V. Since the ends of the elastic steel plate 40 are limited and move up and down, they will only move along the top wall of the storage box 2, and the top wall of the storage box 2 is designed to be inclined, so that the movement of the bottom of the elastic steel plate 40 will cause the elastic steel plate 40 to deform, thereby fixing the welding wire 14 of different sizes. The distance between the bottom of the elastic steel plate 40 close to the bottom of the storage box 2 and the bottom of the storage box 2 is equal to the diameter of the welding wire 14, so as to fix the welding wire 14.

[0057] The pushing assembly comprises a motor 5 fixedly installed outside the storage box 2, a lead screw 6 rotatably installed on the side wall of the storage box 2 through a bearing, a nut 9 threadedly rotatably installed on the lead screw 6, a push plate 8 fixedly installed on the nut 9, a plug cone 7 fixedly installed on the push plate 8 and matched with the welding wire 14, an extension rod 10 fixedly installed on the side wall of the storage box 2, and the extension rod 10 is fixedly connected between the push plate 8 and the extension rod 10, and a circular through hole is formed in the side edge of the storage box 2 for the plug cone 7 to pass through.

[0058] The rotation of the driving end of the motor 5 drives the screw rod 6 fixedly connected to it to rotate. The rotation of the screw rod 6 drives the nut 9 to move, thereby driving the push plate 8 to move (the push plate 8 and the nut 9 will rotate with the rotation of the screw rod 6. In order to prevent the push plate 8 from rotating, the push plate 8 is limited by the telescopic rod 10). The movement of the push plate 8 drives the insertion cone 7 to move, so that the insertion cone 7 is inserted into the storage box 2, and the pressed and fixed welding wire 14 is pushed out from the other end of the storage box 2. Once the welding wire 14 is pushed out, the following welding wire 14 will enter between the elastic steel plate 40 and the storage box 2 under the action of gravity, so as to achieve continuous and stable feeding.

[0059] Example 2: This example differs from the example 1 in that: Figures 1-3 、 Figures 11-15 The feeding part is installed at the bottom of the welding gun 1, and is used to receive the welding wire 14 in the storage box 2 and process and transmit the welding wire 14. The feeding part includes a connecting shell 13 installed at the bottom of the welding gun 1 through a snap-fit ​​assembly; a handle is fixedly installed at the end of the welding gun 1 for the operator to grasp, and an anti-slip groove is provided on the handle.

[0060] The clamping assembly includes a mounting bracket 12 fixedly mounted on the bottom of the welding gun 1, and a clamping block that cooperates with the mounting bracket 12 is fixedly mounted on the connecting shell 13. The mounting bracket 12 and the clamping block are fixed by a threaded rod. The connecting shell 13 is horizontally inserted into the mounting bracket 12. A plurality of spiral holes are opened on the mounting bracket 12. The threaded rod is inserted into the spiral hole and rotated so that the threaded rod is against the connecting shell 13, thereby locking the connecting shell 13.

[0061] A material transmission assembly 3 that cooperates with the welding wire 14 is installed on the connecting shell 13, and the material transmission assembly 3 includes a fixed shell 21 fixedly installed on the connecting shell 13, a motor 19 fixedly installed on the fixed shell 21, a gear 16 rotatably installed on the fixed shell 21, a driving wheel 26 that cooperates with the welding wire 14 is fixedly installed on the gear 16, a pressure block 23 rotatably installed on the fixed shell 21, a driven wheel 2 that meshes with the gear 16 is fixedly installed on the driven wheel, a limiting sleeve 25 that cooperates with the welding wire 14 is fixedly installed on the fixed shell 21, and the function of the limiting sleeve 25 is to limit the welding wire 14 to ensure that the welding wire 14 extends straight from the material transmission assembly 3.

[0062] The pressure adjusting mechanism is installed between the pressing block 23 and the fixed shell 21. The motor 19 drives the end to rotate and drive the gear one 16 fixedly connected therewith to rotate, thereby driving the driving wheel 26 fixedly connected with the gear one 16 to rotate. Due to the action of the pressing block 23, the driven wheel on the pressing block 23 and the driving wheel 26 will clamp the welding wire 14. With the rotation of the driving wheel 26, the welding wire 14 clamped between the driving wheel 26 and the driven wheel will be moved through the friction force. The transmission effect of single wheel rotation is poor, so the rotation of the gear one 16 will drive the gear two to rotate, and the rotation of the gear two will drive the driven wheel fixedly connected therewith to rotate. The rotation direction of the driven wheel and the driving wheel 26 is opposite. At this time, two wheels are driven to rotate at the same time, the friction force is larger, and the driving effect is better.

[0063] The pressure adjusting mechanism comprises an adjusting screw 22 rotatably installed on the fixed shell 21. The adjusting screw 22 is threadedly rotatably installed with a threaded sleeve. The threaded sleeve is slidably connected with the fixed shell 21. The threaded sleeve is fixedly installed with a pressing spring 24. The pressing spring 24 is fixedly connected with the pressing block 23.

[0064] The rotation of the adjusting screw 22 will drive the threaded sleeve to move, thereby changing the distance between the threaded sleeve and the pressing block 23, and changing the length of the pressing spring 24, so as to change the elastic force of the pressing spring 24. The greater the elastic force is, the greater the clamping force between the driven wheel on the pressing block 23 and the driving wheel 26 is. The clamping force can be changed, and the position of the pressing block 23 can be adjusted by adjusting the threaded sleeve while keeping the elastic force of the pressing spring 24 unchanged. Thus, the same force clamping of welding wires 14 with different thicknesses can be realized, and the application range is wider.

[0065] The connecting shell 13 is installed with a heating mechanism matched with the welding wire 14. The heating mechanism comprises a heat supply module 18 fixedly installed on the connecting shell 13. The connecting shell 13 is internally fixedly installed with a heating ring 17. The heating ring 17 is sleeved on the welding wire 14. The heat supply module 18 and the heating ring 17 are heated by a heating resistor 20. The connecting shell 13 is externally fixedly installed with a heat dissipation fan 15.

[0066] After the welding wire 14 passes through the limiting sleeve 25, it will enter the interior of the heating coil 17. At this time, the heating coil 17 is heated by the heating resistor 20 on the heating module 18, so as to preheat the welding wire 14 and reduce the temperature difference between the welding wire 14 before and during welding, thereby accelerating the melting speed of the welding wire 14 and improving the welding efficiency; since the heating coil 17 is located inside the fixed shell 21 and contacts the fixed shell 21, the heat on the heating coil 17 will be conducted to the fixed shell 21. At this time, the heat on the fixed shell 21 is dissipated by the cooling fan 15, which can ensure that other components on the fixed shell 21 are in a relatively low temperature environment, thereby improving the operating efficiency of the components.

[0067] Example 3: This example differs from the technical solution of Example 2 in that: Figures 1-3 、 Figures 16-24 The straightening part is installed at the end of the welding gun 1 and is used to straighten the welding wire 14 sent from the feeding part to keep the distance between the welding wire 14 and the welding gun 1 stable. The straightening part includes a fixing clamp 29 fixedly installed at the end of the welding gun 1, and a straightening component 4 that cooperates with the welding wire 14 is installed on the fixing clamp 29.

[0068] Since part of the welding wire 14 will produce a certain degree of deformation (the welding wire 14 is relatively thin, generally with a diameter of no more than five millimeters. When loading the storage box 2, the welding wire 14 needs to be held, and the force exceeding a certain range will cause the welding wire 14 to deform), the welding wire 14 needs to be straightened to ensure the distance between the welding wire 14 and the welding gun 1, and to ensure the stability of the welding (the position offset of the welding wire 14 may cause uneven welds, thereby affecting the strength of the weld joint, and may also cause uneven weld width and uneven surface, thereby affecting the aesthetics of the welding; the position offset of the welding wire 14 may cause changes in the heat-affected zone, which will affect the properties of the material, and uneven welding heat distribution may cause changes in the crystal structure and hardness of the heat-affected zone, thereby affecting the overall performance of the workpiece; the offset of the welding wire 14 will make it easier to produce welding defects such as pores, slag inclusions, cracks, etc.).

[0069] The straightening assembly 4 includes a straightening cylinder 27 fixedly mounted on a fixing clamp 29, and a plurality of connecting plates 34 are slidably mounted inside the straightening cylinder 27. Each connecting plate 34 is rotatably mounted with a plurality of straightening wheels 33 that cooperate with the welding wire 14, and a scaling mechanism that cooperates with the plurality of connecting plates 34 is installed on the straightening cylinder 27.

[0070] After the welding wire 14 extends from the heating coil 17, it enters the straightening cylinder 27 on the straightening assembly 4. The multiple straightening wheels 33 inside the straightening cylinder 27 clamp and straighten the welding wire 14. Since the welding wire 14 has been preheated, its shape is extremely easy to change, and the straightening effect is better.

[0071] The straightening wheel 33 adopts a concave wheel, and the concave is arc-shaped, so as to increase the contact area between the straightening wheel 33 and the welding wire 14. According to the calculation of pressure, the greater the contact area, the smaller the pressure under the same force. Therefore, the pressure on the welding wire 14 can be effectively reduced, thereby reducing the probability of the welding wire 14 being crushed (even if it is not crushed, it will be deformed).

[0072] The scaling mechanism comprises a plurality of threaded rings 30 threadedly rotatably installed on the straightening barrel 27 through threaded grooves 32, and a plurality of threaded rings 30 are fixedly installed on an adjusting barrel 28. Each threaded ring 30 is rotatably installed with a push ring 31, and each push ring 31 is in sliding connection with the straightening barrel 27. Each push ring 31 is fixedly installed with a plurality of wedge blocks 35, and each connecting plate 34 is fixedly installed with a plurality of adjusting blocks 36 corresponding to the corresponding wedge blocks 35. Each wedge block 35 is fixedly installed with a sliding block 37, and each adjusting block 36 is provided with a sliding groove 38 matched with the corresponding sliding block 37.

[0073] Since the diameter of the push ring 31 is greater than the diameter of the threaded ring 30, if the adjusting barrel 28 is in a straight barrel state, the adjusting barrel 28 will directly contact the push ring 31 and will not be fixed with the threaded ring 30. Therefore, the adjusting barrel 28 is provided with an annular connecting ring, the annular connecting ring is fixed with the threaded ring 30, and the total diameter of the connecting ring and the threaded ring 30 is greater than the diameter of the push ring 31. In this way, it can be ensured that rotating the adjusting barrel 28 will drive the threaded ring 30 to rotate.

[0074] Rotating the adjusting barrel 28 will drive the threaded ring 30 to rotate, and under the action of the threaded groove 32, the threaded ring 30 will move on the straightening barrel 27, thereby driving the push ring 31 to move. The movement of the push ring 31 will drive the wedge blocks 35 fixedly connected thereto to move, thereby driving the sliding blocks 37 on the wedge blocks 35 to move in the sliding grooves 38 on the adjusting blocks 36. Since the sliding grooves 38 are designed to be inclined, with the movement of the sliding blocks 37, the adjusting blocks 36 will move in the vertical direction. The movement of the adjusting blocks 36 drives the connecting plate 34 to move, thereby driving the straightening wheel 33 to move. In this way, the pressing force between the straightening wheel 33 and the welding wire 14 can be adjusted, and welding wires 14 of different sizes can also be straightened (since different types of welding wires 14 have different hardnesses, the straightening force required during straightening is also different. In addition, the same type of welding wire 14 requires different straightening forces before and after preheating. Therefore, the straightening with adjustable pressure can be applied to more situations of welding wire straightening).

[0075] The specific operation steps of the device are as follows:

[0076] Firstly, the bottom position of the elastic steel plate 40 is adjusted to the lowest position, the bottom of the elastic steel plate 40 is attached to the bottom of the storage box 2, then the welding wire 14 is horizontally placed into the storage box 2, at this time, the welding wire 14 cannot reach the bottom of the storage box 2, then the distance between the bottom of the elastic steel plate 40 and the bottom of the storage box 2 is adjusted until one of the welding wires 14 falls between the elastic steel plate 40 and the storage box 2, at this time, the distance between the bottom of the elastic steel plate 40 and the bottom of the storage box 2 is just the diameter of the welding wire 14, so it can be ensured that only one welding wire 14 can pass.

[0077] Then the bottommost welding wire 14 is pushed from the storage box 2 to the material conveying assembly 3 by the pushing assembly, then the welding wire 14 is preheated by the heating mechanism on the material conveying assembly 3, after the preheating is completed, the welding wire 14 enters the straightening assembly 4 under the action of the material conveying assembly 3, and is straightened in the straightening assembly 4, so as to ensure that the distance between the welding wire 14 and the welding gun 1 is stable.

[0078] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An argon arc welding wire feeding mechanism for processing a large reactor, comprising a welding gun (1), characterized in that: The welding wire (14) is also included; the feeding part is installed at the bottom of the welding gun (1) and is used for storing the welding wire (14), the feeding part comprises a connecting frame (11) fixedly installed at the bottom of the welding gun (1), a storage box (2) for storing the welding wire (14) is fixedly installed on the connecting frame (11), the storage box (2) is installed with the pressing assembly matched with the welding wire (14) and the pushing assembly; the feeding part is installed at the bottom of the welding gun (1) and is used for receiving the welding wire (14) in the storage box (2) and processing and conveying the welding wire (14), the feeding part comprises a connecting shell (13) installed at the bottom of the welding gun (1) through the clamping assembly, the connecting shell (13) is installed with the material conveying assembly (3) matched with the welding wire (14); the straightening part is installed at the end of the welding gun (1) and is used for straightening the welding wire (14) conveyed by the feeding part and keeping the distance between the welding wire (14) and the welding gun (1) stable, the straightening part comprises a fixed clamp (29) fixedly installed at the end of the welding gun (1), the fixed clamp (29) is installed with the straightening assembly (4) matched with the welding wire (14); the end face shape of the storage box (2) is V-shaped, the storage box (2) has two discharge ports; the top wall of the storage box (2) is designed to be inclined; the pressing assembly comprises a elastic steel plate (40) installed in the storage box (2) and matched with the welding wire (14) and in the shape of U, the both ends of the elastic steel plate (40) are slidably connected with the storage box (2); the both ends of the elastic steel plate (40) are fixedly installed with sliding blocks, the top wall of the storage box (2) is provided with sliding grooves matched with the sliding blocks, when the sliding blocks slide in the sliding grooves, the upper opening of the elastic steel plate (40) is enlarged or reduced, a plurality of rotating rods (41) are rotatably installed on the elastic steel plate (40), one pull rod (42) is rotatably installed at the ends of the plurality of rotating rods (41) away from the elastic steel plate (40), two limiting plates (43) are fixedly installed on the pull rod (42), the two limiting plates (43) penetrate through and extend out of the top of the storage box (2), the storage box (2) is installed with the size adjusting mechanism matched with the elastic steel plate (40); the size adjusting mechanism comprises a threaded ring fixedly installed on the top of the storage box (2), a bolt (39) is threadedly and rotatably installed on the threaded ring, the bolt (39) penetrates through and extends into the inside of the storage box (2), the end of the bolt (39) located in the inside of the storage box (2) is rotatably connected with the pull rod (42).

2. The argon arc welding wire feeding mechanism for large reactor processing according to claim 1, characterized in that: The pushing assembly comprises a motor (5) fixedly installed outside a storage box (2), a lead screw (6) rotatably installed on the side wall of the storage box (2) through a bearing, a nut (9) threadedly rotatably installed on the lead screw (6), a push plate (8) fixedly installed on the nut (9), a plug cone (7) fixedly installed on the push plate (8) and matched with a welding wire (14), an extension rod (10) fixedly installed on the side wall of the storage box (2), and a circular through hole provided in the side edge of the storage box (2) and used for the plug cone (7) to pass through.

3. The argon arc welding wire feeding mechanism for large reactors processing according to claim 1, characterized by, The clamping assembly comprises a mounting frame (12) fixedly installed at the bottom of the welding gun (1), a clamping block fixedly installed on the connecting shell (13) and matched with the mounting frame (12), and a threaded rod fixed between the mounting frame (12) and the clamping block.

4. The argon arc welding wire feeder mechanism for large reactor processing according to claim 1, characterized by The material conveying assembly (3) comprises a fixed shell (21) fixedly installed on the connecting shell (13), a motor (19) fixedly installed on the fixed shell (21), a gear one (16) rotatably installed on the fixed shell (21), a driving wheel (26) fixedly installed on the gear one (16) and matched with the welding wire (14), a pressing block (23) rotatably installed on the fixed shell (21), a driven wheel rotatably installed on the pressing block (23), a gear two fixedly installed on the driven wheel and engaged with the gear one (16), a limiting sleeve (25) fixedly installed on the fixed shell (21) and matched with the welding wire (14), a pressure adjusting mechanism installed between the pressing block (23) and the fixed shell (21), and a heating mechanism installed on the connecting shell (13) and matched with the welding wire (14).

5. The argon arc welding wire feeder mechanism for large reactors processing according to claim 4, characterized by, The pressure adjusting mechanism comprises an adjusting screw rod (22) rotatably installed on the fixed shell (21), a threaded sleeve threadedly rotatably installed on the adjusting screw rod (22), a sliding connection between the threaded sleeve and the fixed shell (21), a pressing spring (24) fixedly installed on the threaded sleeve, and a fixed connection between the pressing spring (24) and the pressing block (23).

6. The argon arc welding wire feeder mechanism for large reactors processing according to claim 5, characterized by, The heating mechanism comprises a heat supply module (18) fixedly installed on the connecting shell (13), a heating coil (17) fixedly installed in the connecting shell (13), the heating coil (17) sleeving the welding wire (14), a heating resistor (20) for heating between the heat supply module (18) and the heating coil (17), and a heat dissipation fan (15) fixedly installed outside the connecting shell (13).

7. The argon arc welding wire feeding mechanism for large reactors according to claim 6, characterized in that, The straightening assembly (4) comprises a straightening cylinder (27) fixedly installed on a fixed clamp (29), a plurality of connecting plates (34) slidably installed in the straightening cylinder (27), a plurality of straightening wheels (33) rotatably installed on each connecting plate (34) and matched with the welding wire (14), and a zooming mechanism installed on the straightening cylinder (27) and matched with the plurality of connecting plates (34).

8. The argon arc welding wire feeder mechanism for large reactor processing according to claim 7, characterized by, Said scaling mechanism comprises multiple threaded rings (30) installed on the straightening cylinder (27) through threaded grooves (32), a regulating cylinder (28) is fixedly installed on the multiple threaded rings (30), a pushing ring (31) is rotatably installed on each threaded ring (30), each pushing ring (31) is in sliding connection with the straightening cylinder (27), multiple wedges (35) are fixedly installed on each pushing ring (31), multiple adjusting blocks (36) corresponding to the wedges (35) are fixedly installed on each connecting plate (34), a sliding block (37) is fixedly installed on each wedge (35), and a sliding groove (38) matched with the sliding block (37) is formed in each adjusting block (36).

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