Automatic welding equipment for rotary cultivator cutter shaft

Abstract

The automatic welding equipment comprises a welding platform, a cutter shaft positioning mechanism and a cutter shaft welding mechanism, wherein the cutter shaft positioning mechanism and the cutter shaft welding mechanism are assembled on the welding platform; wherein the cutter shaft positioning mechanism comprises a chuck assembly and a tip assembly which are oppositely arranged; the cutter shaft welding mechanism comprises a mounting plate assembled on the welding platform in a sliding mode, a cross-shaped linear module fixedly installed on the mounting plate, a rotating motor fixedly installed on a transverse guide rail sliding table in the cross-shaped linear module and a welding gun assembled on the rotating motor. The cutter shaft welding mechanism further comprises a moving assembly, the moving assembly comprises a rack fixedly arranged on the welding platform in the length direction, a driving motor fixedly mounted on the mounting plate and a gear assembled at the driving end of the driving motor, and the gear is meshed with the rack. The rotary cultivator cutter shaft automatic welding device is low in production cost, simple in early-stage assembly and subsequent maintenance operation, more flexible in control over the welding gun, suitable for being used when a rotary cultivator cutter shaft is machined, and used for automatically welding a tool magazine on a shaft to form the rotary cultivator cutter shaft.

Description

Technical Field

[0001] The utility model relates to mechanical processing equipment for a rotary tiller blade shaft, in particular to automatic welding equipment for the rotary tiller blade shaft. Background Art

[0002] The Chinese utility model patent with the authorization announcement number "CN 206296565 U" discloses a tool magazine integrated welding device, which is used to weld multiple tool magazines on a shaft in a spiral distribution form to form a rotary tiller knife shaft. The device can replace manual work to complete the welding of the rotary tiller knife shaft, which can improve the work efficiency and work accuracy. However, the device has the following defects in structural design:

[0003] First, the welding device in the equipment uses a ball screw to achieve sliding along the length direction of the welding platform. The use of a ball screw makes the equipment production cost relatively high, and the assembly and subsequent maintenance operations are cumbersome and complicated;

[0004] Second, the main motor is fixed on one side of the welding platform in the equipment, and the driving end of the main motor is connected to the main shaft, on which a chuck is set. The main shaft is fixed on one side of the welding platform by only connecting the driving end of the main motor, and no additional support structure is set for the main shaft. During operation, the main shaft is likely to tilt, causing the chuck to be inaccurately positioned, or the main shaft may be broken or damaged due to excessive force;

[0005] Third, the welding gun in the equipment is fixed on the horizontal manipulator through a connecting block and a connecting rod. The welding gun can only move horizontally under the control of the horizontal manipulator, or move vertically under the control of the vertical manipulator. The welding gun cannot rotate and adjust the welding angle relative to the tool shaft, and has poor flexibility. It is difficult to completely weld the connection between the tool magazine and the shaft during welding operations. Utility Model Content

[0006] In order to solve the above deficiencies in the prior art, the utility model aims to provide an automatic welding device for the blade shaft of a rotary tiller, so as to appropriately reduce costs, simplify assembly and subsequent maintenance operations, and improve the reliability of the equipment structure.

[0007] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows: an automatic welding device for a rotary tiller blade shaft, comprising a welding platform, a blade shaft positioning mechanism and a blade shaft welding mechanism mounted on the welding platform; wherein the blade shaft positioning mechanism comprises a chuck assembly and a top assembly arranged relatively; the blade shaft welding mechanism comprises a mounting plate slidably mounted on the welding platform, a cross-shaped linear module fixedly mounted on the mounting plate, a rotary motor fixedly mounted on a transverse guide rail slide in the cross-shaped linear module, and a welding gun mounted on the rotary motor;

[0008] The knife shaft welding mechanism also includes a moving component, which includes a rack fixed on the welding platform along the length direction, a drive motor fixed on the mounting plate, and a gear assembled on the drive end of the drive motor, and the gear is meshed with the rack.

[0009] As a limitation of the present utility model, at least one cylindrical linear guide is mounted on the welding platform, and the cylindrical linear guide is parallel to the rack;

[0010] The mounting plate is assembled on the cylindrical linear guide rail through the first guide rail slider.

[0011] As a further limitation of the present invention, the top assembly includes a tailstock slidably mounted on the welding platform, a top sleeve slidably mounted on the tailstock, a top mounted on the top sleeve and rotatable, and a driving cylinder fixed on the tailstock and having a power output end connected to the top sleeve;

[0012] The tailstock is assembled on the cylindrical linear guide rail through the second guide rail slider, and the second guide rail slider is provided with a positioning bolt to realize the positioning and fixing of the second guide rail slider on the cylindrical linear guide rail.

[0013] As a further limitation of the present invention, both sides of the bottom of the tailstock are provided with fixing ear plates, and the fixing ear plates are equipped with hook plate components for positioning and fixing the tailstock;

[0014] The hook plate assembly includes a hook plate that can be hooked on the welding platform, a connecting bolt rotatably connected to the top of the hook plate, and a nut threadedly assembled on the connecting bolt; the connecting bolt passes through the fixed ear plate from below, and the nut is located above the fixed ear plate and is larger than the through hole of the fixed ear plate.

[0015] As a further limitation of the present invention, a bearing is provided between the center and the center sleeve.

[0016] As a further limitation of the present invention, the chuck assembly includes a chassis fixedly mounted at one end of the welding platform, a second drive motor disposed in the chassis, a spindle mounted at a drive end of the second drive motor and extending to the outside of the chassis, and a chuck fixedly mounted at a free end of the spindle, and a bearing seat and a second bearing are fixedly mounted at a location where the spindle is passed through the chassis;

[0017] The chuck and the center are opposite and collinear.

[0018] As a further limitation of the present invention, a conductive carbon brush is fixedly provided on the bearing seat, and a graphite block in the conductive carbon brush contacts the outer surface of the main shaft to build a conductive path between the main shaft and the bearing seat.

[0019] As another limitation of the present invention, a tool magazine positioning assembly is also fixedly mounted on the mounting plate, and the tool magazine positioning assembly and the cross-shaped linear module assembly are arranged on both sides of the welding platform;

[0020] The tool magazine positioning assembly comprises a base detachably mounted on the mounting plate, a sleeve fixed on the base, and a positioning connecting plate assembled in the sleeve; the positioning connecting plate comprises a first connecting plate and a second connecting plate hinged at the ends, wherein the first connecting plate is inserted into the sleeve and positioned and fixed by a top screw, and the free end of the second connecting plate is provided with an arc capable of being placed on the tool shaft;

[0021] The side surface of the second connecting plate is located in the radial direction of the knife shaft.

[0022] As other limitations of the present invention, it also includes a refueling pump fixedly mounted on the mounting plate and a plurality of oil distribution pipes connected to the refueling pump through a distributor, the oil outlets of the oil distribution pipes facing the contact position between the first guide rail slider and the cylindrical linear guide rail or facing the meshing position of the gear and the rack.

[0023] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0024] (1) The welding gun on the knife shaft welding mechanism of the utility model is angle-controlled by a rotary motor and horizontal and vertical movement is controlled by a cross-shaped linear module, so that the welding gun can be adjusted to any angle, thereby ensuring that the running trajectory of the welding gun completely coincides with the "connection between the knife magazine and the shaft" during operation to ensure the integrity of the welding.

[0025] (2) The movable assembly used to drive the knife shaft welding mechanism to slide along the length direction of the welding platform in the utility model is composed of a gear, a rack and a driving motor. The structure of the gear and rack is simpler and more convenient in the early assembly and subsequent disassembly and maintenance, and under the premise of ensuring the positioning accuracy of the knife shaft welding mechanism, the production cost is appropriately reduced.

[0026] (3) The utility model provides two methods for positioning and fixing the tailstock: one is to set a positioning bolt on the second guide slider below the tailstock, and tighten the positioning bolt to press against the surface of the cylindrical linear guide to achieve the positioning of the second guide slider on the cylindrical linear guide (i.e., to achieve the fixation of the tailstock); the other is to assemble hook plate assemblies on both sides of the bottom of the tailstock, and use the hook plates to firmly hook the welding platform to achieve the fixation of the tailstock. The simultaneous use of the two methods can improve the firmness of the tailstock positioning, and when one of the methods fails, the tailstock can be fixed with the help of the other method, and the structural reliability is high.

[0027] (4) The spindle connected between the chuck and the second drive motor in the chuck assembly of the utility model is assembled on the chassis through the bearing seat and the second bearing. The chassis can be used to support the spindle, which can improve the stability of the spindle and prevent the spindle from tilting or breaking due to excessive force on one side. In addition, a conductive path is built between the bearing seat and the spindle through a conductive carbon brush, which can prevent the current on the spindle from being transmitted to the second bearing during welding and causing damage to the second bearing. This structure effectively increases the service life of the second bearing.

[0028] (5) The tool magazine positioning assembly fixedly mounted on the mounting plate in the utility model can assist the staff in positioning the tool magazine when the staff spot welds the tool magazine on the shaft surface, thereby ensuring that the tool magazine is located in the radial direction of the shaft.

[0029] (6) In the utility model, the oil pump fixedly mounted on the mounting plate can inject lubricating oil into the space between the first guide rail slider and the cylindrical linear guide rail or into the meshing position between the gear and the rack in a regular and quantitative manner, thereby ensuring the smooth sliding of the knife shaft welding mechanism and reducing the workload of the staff for regular maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0032] Figure 2 This is a schematic diagram of the internal structure of the welding platform in the embodiment of the utility model;

[0033] Figure 3 This is a structural schematic diagram of a chuck assembly in an embodiment of the utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the top assembly in the embodiment of the utility model;

[0035] Figure 5 This is a structural schematic diagram of the knife shaft welding mechanism in the embodiment of the utility model;

[0036] Figure 6 This is a schematic diagram of the application structure of an embodiment of the utility model;

[0037] In the figure: 1. welding platform; 2. chuck assembly; 3. top assembly; 4. knife shaft welding mechanism; 5. knife shaft;

[0038] 101, I-beam; 102, spacer block; 103, cylindrical linear guide rail;

[0039] 201, chassis; 202, second drive motor; 203, spindle; 204, chuck; 205, coupling; 206, reducer; 207, bearing seat; 208, conductive carbon brush;

[0040] 301, tailstock; 302, top sleeve; 303, top; 304, driving cylinder; 305, positioning bolt; 306, fixing ear plate; 307, hook plate; 308, connecting bolt; 309, nut; 310, second guide rail slider;

[0041] 401, mounting plate; 402, cross-shaped linear module; 403, rotating motor; 404, welding gun; 405, first guide rail slider; 406, rack; 407, gear; 408, driving motor; 409, base; 410, sleeve; 411, first connecting plate; 412, second connecting plate; 413, top wire; 414, welding wire reel; 415, wire feeder. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention, and are not used to limit the present invention.

[0043] Embodiment A rotary tiller blade shaft automatic welding device

[0044] like Figure 1 As shown, this embodiment includes a welding platform 1 and a knife shaft positioning mechanism and a knife shaft welding mechanism 4 assembled on the welding platform 1.

[0045] 1. Welding platform 1

[0046] The welding platform 1 is the installation base of various components, such as Figure 2 As shown, it includes a plurality of parallel I-beams 101, three pads 102 are arranged at equal intervals along the length direction below the I-beams 101, and at least one cylindrical linear guide 103 is installed on the upper surface of the I-beams 101, and the cylindrical linear guide 103 is parallel to the I-beams 101. In this embodiment, three cylindrical linear guides 103 are installed (two of which are shared by the knife welding mechanism 4 and the top assembly 3, and the other is used alone by the knife shaft welding mechanism 4). Furthermore, a cover plate is also set up above the I-beams 101 to cover the cylindrical linear guides 103 to prevent welding slag from falling onto the surface of the cylindrical linear guides 103 during welding and affecting the sliding smoothness of the guide slider.

[0047] 2. Cutter shaft positioning mechanism

[0048] The knife shaft positioning mechanism is used to clamp the rotary tiller knife shaft 5 and control the rotation of the rotary tiller knife shaft 5 during welding. The knife shaft positioning mechanism includes a chuck assembly 2 and a top assembly 3 which are arranged oppositely at two ends of the welding platform 1.

[0049] (1) Chuck assembly 2

[0050] like Figure 3 As shown, the chuck assembly 2 includes a chassis 201, a second drive motor 202, a spindle 203 and a chuck 204. The chassis 201 is fixed at one end of the welding platform 1, and is used to accommodate the second drive motor 202, the spindle 203, and numerical control structures such as a controller and an operation screen; the second drive motor 202 is arranged inside the chassis 201, and is used to drive the spindle 203 and the chuck 204 to rotate; one end of the spindle 203 is connected to the driving end of the second drive motor 202 through a coupling 205 and a reducer 206 in sequence, and the other end of the spindle 203 extends to the outside of the chassis 201; the chuck 204 is fixed to the free end of the spindle 203 extending to the outside of the chassis 201, and is used to clamp the rotary tiller blade 5. In this embodiment, the second drive motor 202 is a servo motor; and the chuck 204 is a three-jaw chuck in the prior art.

[0051] Furthermore, a bearing seat 207 and a second bearing are fixedly mounted at the through hole of the chassis 201 through which the main shaft 203 is penetrated, so as to realize the assembly of the main shaft 203 on the chassis 201. In this embodiment, the bearing seat 207 and the second bearing are flange linear bearings in the prior art. In order to avoid the bearing conductive phenomenon and reduce the service life of the second bearing, a conductive carbon brush 208 is fixedly mounted on the bearing seat 207 in this embodiment. The graphite block in the conductive carbon brush 208 contacts the outer surface of the main shaft 203, and the other end is connected to the surface of the bearing seat 207 through a wire, thereby building a conductive path between the main shaft 203 and the bearing seat 207 to avoid the conduction of current to the inside of the second bearing.

[0052] (2) Top component 3

[0053] like Figure 4 As shown, the top assembly 3 includes a tailstock 301, a top sleeve 302, a top 303 and a driving cylinder 304. The tailstock 301 is assembled on the cylindrical linear guide rail 103 through a plurality of second guide rail sliders 310 to achieve sliding assembly on the welding platform 1; the top sleeve 302 is slidably assembled on the top of the tailstock 301 and can be telescopically slid on the tailstock 301; the top 303 is assembled on the top sleeve 302 and can rotate; the driving cylinder 304 is fixed on the tailstock 301, and the power output end is connected to the top sleeve 302, which is used to control the telescopic sliding of the top sleeve 302 and the top 303 on the tailstock 301.

[0054] The top 303 is opposite to and co-linear with the chuck 204 .

[0055] Furthermore, a bearing is provided between the top 303 and the top sleeve 302 so that the top 303 can rotate more smoothly. A positioning bolt 305 is threadedly mounted on the second guide rail slider 310, and the end of the positioning bolt 305 can pass through the second guide rail slider 310 and contact the outer surface of the cylindrical linear guide 103 to achieve temporary positioning of the second guide rail slider 310 on the cylindrical linear guide 103.

[0056] In this embodiment, fixed ear plates 306 are provided on both sides of the bottom of the tailstock 301, and each fixed ear plate 306 is equipped with a hook plate assembly. The hook plate 307 is firmly hooked on the welding platform 1 to achieve temporary positioning of the tailstock 301. The hook plate assembly includes a hook plate 307, a connecting bolt 308 and a nut 309. Figure 4 As shown, the bottom of the hook plate 307 extends horizontally and can be hooked on the welding platform 1. The top of the hook plate 307 also extends horizontally, and a through hole is opened in the upper extension part. The connecting bolt 308 is inserted from the bottom into the through hole of the upper extension part of the hook plate 307 to achieve rotational connection on the hook plate 307. The top of the connecting bolt 308 also passes through the fixed ear plate 306 at the bottom of the tailstock 301 from below. The nut 309 is threadedly connected to the connecting bolt 308 and is located above the fixed ear plate 306. The size of the nut 309 is larger than the through hole of the fixed ear plate 306 to avoid separation from the fixed ear plate 306. In this way, the assembly of the hook plate assembly on the fixed ear plate 306 of the tailstock 301 is achieved.

[0057] 3. Knife shaft welding mechanism 4

[0058] The blade shaft welding mechanism 4 is used to perform welding work on the blade shaft 5 of the rotary tiller. Figure 5 As shown, the tool shaft welding mechanism 4 includes a mounting plate 401, a cross-shaped linear module 402, a rotary motor 403, a welding gun 404, a moving component and a tool magazine positioning component.

[0059] The mounting plate 401 is the mounting base for the components in the knife shaft welding mechanism 4, and it is assembled on the cylindrical linear guide 103 through a plurality of first guide rail sliders 405 to realize sliding assembly on the welding platform 1; the cross-shaped linear module 402 is an existing structure, including a longitudinal guide rail slide and a transverse guide rail slide assembled in one body, wherein the bottom of the longitudinal guide rail slide is fixed on the mounting plate 401; the rotating motor 403 is fixed on the end of the transverse guide rail slide extending above the welding platform 1, and is used to control the rotation of the welding gun 404; the welding gun 404 is assembled on the driving end of the rotating motor 403 through a connecting frame, and is a welding gun 404 in the prior art, and is used to perform welding work.

[0060] It should be noted that a welding wire reel 414 is rotatably mounted on the mounting plate 401, and a wire feeder 415 is fixedly mounted on the tail of the transverse guide rail slide in the cross-shaped linear module 402. When the welding gun 404 performs welding work, the welding wire is fed to the welding gun 404 by the welding wire reel 414 through the wire feeder 415.

[0061] The moving assembly includes a rack 406, a gear 407 and a drive motor 408. The rack 406 is fixed on the welding platform 1 along the length direction and is parallel to the cylindrical linear guide 103; the gear 407 is meshed with the rack 406; the drive motor 408 is fixed to the bottom of the mounting plate 401 through a motor mounting bracket, and the driving end of the drive motor 408 is connected to the gear 407. The drive motor 408 drives the gear 407 to rotate, so that the gear 407 moves under the restriction of the rack 406, thereby realizing the drive of the mounting plate 401, so that the mounting plate 401 slides along the cylindrical linear guide 103.

[0062] The tool magazine positioning assembly and the cross-shaped linear module 402 are respectively arranged on both sides of the welding platform 1 to assist the staff in positioning the tool magazine to ensure that the tool magazine is located in the radial direction of the shaft. Figure 5 As shown, the tool magazine positioning assembly includes a base 409, a sleeve 410 and a positioning connecting plate. The base 409 is detachably arranged on the upper surface of the mounting plate 401 by bolts; the sleeve 410 is welded and fixed on the base 409; and the positioning connecting plate is assembled in the sleeve 410. Specifically, the positioning connecting plate includes a first connecting plate 411 and a second connecting plate 412 hinged at the ends, wherein the first connecting plate 411 is inserted into the above-mentioned sleeve 410 and is positioned and fixed by at least one top screw 413; the free end of the second connecting plate 412 is provided with an arc that can be placed on the knife shaft 5, and the side surface of the second connecting plate 412 is located in the radial direction of the knife shaft 5.

[0063] When using the tool magazine positioning assembly, first loosen the top screw 413 to adjust the fixed height of the first connecting plate 411 in the sleeve 410, and then rotate the second connecting plate 412 to the tool shaft 5. The staff will stick the tool magazine that needs to be spot welded to the shaft on the side of the second connecting plate 412 to determine that the tool magazine is located in the radial direction of the shaft.

[0064] In this embodiment, in order to facilitate the operation of the staff, a control switch for controlling the start and stop of the drive motor 408 is provided on the outside of the sleeve 410. The staff can manually operate the movement of the mounting plate 401 and the tool magazine positioning assembly on the mounting plate 401 through the control switch.

[0065] Furthermore, in this embodiment, a refueling pump and a plurality of oil distribution pipes connected to the refueling pump through a distributor are also provided on the mounting plate 401. The oil outlet of the oil distribution pipe is oriented toward the contact position between the first guide rail slider 405 and the cylindrical linear guide 103, or toward the meshing position of the gear 407 and the rack 406. During operation, the refueling pump can be controlled to inject lubricating oil into the first guide rail slider 405 and the cylindrical linear guide 103, or the meshing position of the gear 407 and the rack 406 in a timely and quantitative manner to ensure the smooth sliding of the mounting plate 401 on the welding platform 1.

[0066] When using this embodiment, first, the shaft of the tool magazine to be welded is assembled between the chuck assembly 2 and the top assembly 3 of the tool shaft positioning mechanism; then, with the assistance of the tool magazine positioning assembly, the staff spot welds all the tool magazines on the outer surface of the shaft in a spiral distribution manner; finally, under the control of the controller, the tool shaft welding mechanism 4 re-welds all the tool magazines on the shaft.

[0067] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic welding device for a rotary tiller blade shaft, comprising a welding platform and a blade shaft positioning mechanism and a blade shaft welding mechanism mounted on the welding platform; wherein: The knife shaft positioning mechanism includes a chuck assembly and a top assembly arranged relatively to each other; the feature is that the knife shaft welding mechanism includes a mounting plate slidably mounted on a welding platform, a cross-shaped linear module fixedly mounted on the mounting plate, a rotary motor fixedly mounted on a transverse guide rail slide in the cross-shaped linear module, and a welding gun mounted on the rotary motor; The knife shaft welding mechanism also includes a moving component, which includes a rack fixed on the welding platform along the length direction, a drive motor fixed on the mounting plate, and a gear assembled on the drive end of the drive motor, and the gear is meshed with the rack.

2. The automatic welding equipment for rotary tiller blade shaft according to claim 1 is characterized in that: At least one cylindrical linear guide is installed on the welding platform, and the cylindrical linear guide is parallel to the rack; The mounting plate is assembled on the cylindrical linear guide rail through the first guide rail slider.

3. The automatic welding equipment for rotary tiller blade shaft according to claim 2 is characterized in that: The top assembly includes a tailstock slidably mounted on the welding platform, a top sleeve slidably mounted on the tailstock, a top mounted on the top sleeve and rotatable, and a driving cylinder fixed on the tailstock and having a power output end connected to the top sleeve; The tailstock is assembled on the cylindrical linear guide rail through the second guide rail slider, and the second guide rail slider is provided with a positioning bolt to realize the positioning and fixing of the second guide rail slider on the cylindrical linear guide rail.

4. The automatic welding equipment for rotary tiller blade shaft according to claim 3 is characterized in that: Both sides of the bottom of the tailstock are provided with fixed ear plates, and the fixed ear plates are equipped with hook plate components for positioning and fixing the tailstock; The hook plate assembly includes a hook plate that can be hooked on the welding platform, a connecting bolt rotatably connected to the top of the hook plate, and a nut threadedly assembled on the connecting bolt; the connecting bolt passes through the fixed ear plate from below, and the nut is located above the fixed ear plate and is larger than the through hole of the fixed ear plate.

5. The automatic welding equipment for rotary tiller blade shaft according to claim 3 is characterized in that: A bearing is arranged between the top and the top sleeve.

6. The automatic welding equipment for rotary tiller blade shaft according to any one of claims 3 to 5, characterized in that: The chuck assembly includes a chassis fixedly mounted at one end of the welding platform, a second drive motor arranged in the chassis, a spindle mounted at the drive end of the second drive motor and extending to the outside of the chassis, and a chuck fixedly mounted at the free end of the spindle, and a bearing seat and a second bearing are fixedly mounted at the location where the spindle passes through the chassis; The chuck and the center are opposite and collinear.

7. The automatic welding equipment for rotary tiller blade shaft according to claim 6 is characterized in that: A conductive carbon brush is fixed on the bearing seat, and a graphite block in the conductive carbon brush contacts the outer surface of the main shaft to build a conductive path between the main shaft and the bearing seat.

8. The automatic welding equipment for rotary tiller blade shaft according to any one of claims 1 to 5 and 7, characterized in that: The mounting plate is also fixed with a tool magazine positioning assembly, and the tool magazine positioning assembly and the cross-shaped linear module assembly are arranged on both sides of the welding platform; The tool magazine positioning assembly comprises a base detachably mounted on the mounting plate, a sleeve fixed on the base, and a positioning connecting plate assembled in the sleeve; the positioning connecting plate comprises a first connecting plate and a second connecting plate hinged at the ends, wherein the first connecting plate is inserted into the sleeve and positioned and fixed by a top screw, and the free end of the second connecting plate is provided with an arc capable of being placed on the tool shaft; The side surface of the second connecting plate is located in the radial direction of the knife shaft.

9. The automatic welding equipment for rotary tiller blade shaft according to any one of claims 2-5 and 7, characterized in that: It also includes a refueling pump fixed on the mounting plate and a plurality of oil distribution pipes connected to the refueling pump through a distributor, wherein the oil outlets of the oil distribution pipes face the contact position between the first guide rail slider and the cylindrical linear guide rail or face the meshing position between the gear and the rack.

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