Welding equipment and method for agricultural machine machining

Abstract

The invention relates to the technical field of automatic welding equipment, and discloses welding equipment and method for agricultural machine machining. The welding equipment for agricultural machine machining comprises a base, a three-axis moving sliding table is installed on the base, a welding gun is installed on a sliding block of the three-axis moving sliding table, a guide rod is installed on the side portion of the welding gun, and a welding table is further installed on the base; the welding table is provided with a positioner used for clamping and turning over agricultural machine components, a fixing sleeve is installed on the guide rod, the fixing sleeve is rotatably installed on the welding support, a motor is installed on the welding support, a rotating shaft of the motor is fixedly connected with the fixing sleeve, and a cleaning mechanism is arranged on the welding table and located on the side portion of the positioner. During cleaning, the three-axis moving sliding table moves the welding support to the position above the cleaning mechanism, the bottom end of the guide rod is aligned with the brush head, the brush head cleans the bottom end of the guide rod, the guide rod is prevented from being blocked, the stable conveying speed of welding wires is guaranteed, and therefore the welding quality is guaranteed, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automated welding equipment, and particularly to a welding equipment and method for agricultural machine processing. Background Technique

[0002] The automated welding equipment for agricultural machine processing generally includes a welding torch and a wire feeder. The wire feeder includes a guide rod for conveying the welding wire. During welding, the guide rod is aligned with the head of the welding torch, so as to send the welding wire for welding to the welding position of the welding torch. During the welding process, due to the melting and metallurgical reaction of the welding material, a large amount of welding slag will be generated.

[0003] After the existing automated welding equipment for agricultural machine processing is used for a period of time, the welding slag gradually clogs the guide rod, which hinders the conveying of the welding wire, causes the conveying speed of the welding wire to decrease, thereby reducing the welding quality, and even causing the welding process to be interrupted. Workers have to spend time cleaning the guide rod, which greatly reduces the welding work efficiency. Therefore, it does not meet the existing requirements. For this reason, we propose a welding equipment and method for agricultural machine processing. Summary of the Invention

[0004] The present invention provides a welding equipment and method for agricultural machine processing, which has the beneficial effects that the guide rod is not easily blocked, the conveying speed of the welding wire is ensured to be stable, the welding quality can be ensured, the maintenance time cost of workers is reduced, and thus the work efficiency is improved, and solves the problems mentioned in the above background technique that after the existing automated welding equipment for agricultural machine processing is used for a period of time, the welding slag gradually clogs the guide rod, which hinders the conveying of the welding wire, causes the conveying speed of the welding wire to decrease, thereby reducing the welding quality, and even causing the welding process to be interrupted. Workers have to spend time cleaning the guide rod, which greatly reduces the welding work efficiency.

[0005] The present invention provides the following technical solution: A welding equipment for agricultural machine processing, including a base, a three-axis moving slide is installed on the base, a welding torch is installed on the slider of the three-axis moving slide, a guide rod is installed on the side of the welding torch, a welding table is also installed on the base, a positioner for clamping and flipping agricultural machine parts is arranged on the welding table, a welding bracket is installed on the slider of the three-axis moving slide, the welding torch is installed on the welding bracket, a fixed sleeve is installed on the guide rod, the fixed sleeve is rotatably installed on the welding bracket, and a motor is installed on the welding bracket, and the rotating shaft of the motor is fixedly connected with the fixed sleeve;

[0006] A cleaning mechanism is arranged on the welding table, the cleaning mechanism is located on the side of the positioner, and the cleaning mechanism includes a brush head;

[0007] During cleaning, the three-axis moving slide table moves the welding bracket above the cleaning mechanism, the bottom end of the guiding rod aligns with the brush head, and the brush head cleans the interior of the guiding rod.

[0008] As an alternative solution of the welding equipment for agricultural machine processing according to the present invention, wherein: a guiding head is slidably mounted on the guiding rod, the guiding head is set as a sleeve with one end being funnel-shaped, a first compression spring is arranged inside the guiding head, a fourth fixing plate is mounted on the guiding rod, and one end of the first compression spring is fixedly connected to the fourth fixing plate;

[0009] During cleaning, the guiding head slides downward, the brush head extends into the guiding head, and the brush head cleans the interior of the guiding head.

[0010] As an alternative solution of the welding equipment for agricultural machine processing according to the present invention, wherein: a cleaning bracket is mounted on the welding table, a first limiting plate is mounted on the cleaning bracket, a first vertical rod is arranged on the cleaning bracket, the first vertical rod penetrates through the first limiting plate, and the brush head is mounted on the first vertical rod;

[0011] A first fixing plate is mounted on the first vertical rod, and a second compression spring is arranged between the first fixing plate and the first limiting plate;

[0012] A cylinder is mounted on the base, the piston rod of the cylinder slidably penetrates through the welding table, a turntable is mounted on the piston rod of the cylinder, and the turntable is located below the first vertical rod;

[0013] When the piston rod of the cylinder moves upward, the turntable drives the first vertical rod to move upward.

[0014] As an alternative solution of the welding equipment for agricultural machine processing according to the present invention, wherein: a threaded portion is arranged on the first vertical rod, the threaded portion is threadedly connected to the first limiting plate, and when the first vertical rod moves upward, the first vertical rod drives the brush head to rotate.

[0015] As an alternative solution of the welding equipment for agricultural machine processing according to the present invention, wherein: an annular groove is formed on the turntable, a first wedge-shaped block is mounted in the annular groove, the bottom end of the first vertical rod abuts against the inclined surface of the first wedge-shaped block, a first baffle for limiting the first vertical rod is further mounted on one side of the first wedge-shaped block, a torsion spring is arranged at the bottom end of the turntable, one end of the torsion spring is fixedly connected to the turntable, and the other end of the torsion spring is fixedly connected to the piston rod of the cylinder;

[0016] When the turntable moves upward, the bottom end of the first vertical rod slides along the inclined surface of the first wedge-shaped block, and the turntable rotates.

[0017] As an alternative solution for the welding equipment used in agricultural machine processing according to the present invention, wherein: a second limiting plate is installed on the cleaning bracket, and a second vertical rod is also installed on the cleaning bracket. The second vertical rod slidably penetrates through the second limiting plate, and a second fixing plate is installed on the second vertical rod. A third compression spring is arranged between the second fixing plate and the second limiting plate;

[0018] A second wedge-shaped block is installed in the annular groove. The bottom end of the second vertical rod abuts against the inclined surface of the second wedge-shaped block. A second baffle for limiting the second vertical rod is installed on one side of the second wedge-shaped block;

[0019] A cross plate is installed on the guiding head, and a third pressing plate is installed on the second vertical rod. The third pressing plate is located above the cross plate, and the third pressing plate intermittently abuts against the cross plate;

[0020] The height of the inclined surface of the second wedge-shaped block is greater than the rising height of the turntable. When the turntable rotates, the second vertical rod moves downward along the inclined surface of the second wedge-shaped block, the third pressing plate abuts against the cross plate, the guiding head moves downward, and at the same time, the brush head extends into the guiding head for cleaning.

[0021] As an alternative solution for the welding equipment used in agricultural machine processing according to the present invention, wherein: a straightening mechanism is arranged at the top end of the guiding rod. The straightening mechanism includes a sliding groove, a through hole for inserting a welding wire is opened on the sliding groove, and a third fixing plate is fixedly installed on the sliding groove;

[0022] A first moving plate is slidably installed in the sliding groove. A through groove is opened on the first moving plate, and a second pressing plate is slidably installed on the first moving plate. A second return spring is arranged between the second pressing plate and the third fixing plate. A second moving plate is fixedly installed on the first moving plate, and a first pressing plate is also slidably installed on the first moving plate. A first return spring is arranged between the second moving plate and the first pressing plate;

[0023] The first pressing plate and the second pressing plate flatten the bent welding wire to make it tend to be straight.

[0024] As an alternative solution for the welding equipment used in agricultural machine processing according to the present invention, wherein: a wedge-shaped groove is opened at the bottom of the first moving plate. The wedge-shaped groove is located directly above the second vertical rod, and the top end of the second vertical rod intermittently abuts against the inclined surface of the wedge-shaped groove;

[0025] A third wedge-shaped block is fixedly installed on the sliding groove. The first pressing plate is in sliding contact with the inclined surface of the third wedge-shaped block. A fourth wedge-shaped block is also fixedly installed on the first moving plate. The second pressing plate is in sliding contact with the inclined surface of the fourth wedge-shaped block;

[0026] When the second vertical rod moves upward, the top end of the second vertical rod slides along the inclined surface of the wedge-shaped groove, the first moving plate moves to one side, and the first pressing plate and the second pressing plate move upward along the inclined surfaces of the third wedge-shaped block and the fourth wedge-shaped block respectively. At the same time, the first pressing plate and the second pressing plate flatten the bent welding wire.

[0027] As an alternative solution of the welding equipment for agricultural machine processing according to the present invention, wherein: arc-shaped plates are respectively installed on the first pressing plate and the second pressing plate, the welding wire is in sliding contact with the curved surface of the arc-shaped plate, a clamping block is installed at the upper end of the sliding groove, the clamping block is located between the first pressing plate and the second pressing plate, and the clamping block is arranged corresponding to the through hole, and the width of the clamping block is equal to the diameter of the through hole.

[0028] This solution also proposes a method for a welding equipment for agricultural machine processing, including the following specific steps:

[0029] S1. Preparation before welding, check whether the power supply, control system, and wire feeding mechanism are in good condition, clean the welding surface of the workpiece, and remove surface impurities;

[0030] S2. Fixing of the workpiece, fix the workpiece on the positioner, then adjust the position of the welding torch to make it reach the predetermined welding position of the workpiece, and the welding torch welds the predetermined position driven by the three-axis moving slide table;

[0031] S3. Regular cleaning, clean the guide head at the end of the guide rod through the cleaning mechanism every 5 - 8 hours to keep the guide head unobstructed. The steps are as follows:

[0032] a1. First, adjust the deflection angle of the guide rod, and adjust the guide rod that was originally inclined towards the welding torch direction to be perpendicular to the horizontal ground;

[0033] a2. When the guide rod is adjusted in place, jack up the turntable upward through the air cylinder. Driven by the turntable, the brush head rotates and rises while inserting into the guide head, thereby cleaning the guide head;

[0034] a3. During the upward movement of the turntable, it will deflect under the influence of the contact of the first vertical rod, thereby causing the second vertical rod to move downward. Driven by the second vertical rod, the third pressing plate pulls the guide head downward to make it move towards the brush head direction;

[0035] a4. After cleaning, straighten the tin wire that is bent due to the deflection of the guide rod through the straightening mechanism;

[0036] S4. Post-treatment, after welding, grind and inspect the weld seam to ensure that there are no welding defects, and then move the finished product to the next processing station.

[0037] The present invention has the following beneficial effects:

[0038] 1. The welding equipment and method for agricultural machine processing are provided with a cleaning mechanism on the welding table. During cleaning, the three-axis movable slide moves the welding bracket to the top of the cleaning mechanism, and the bottom end of the guide rod is aligned with the brush head. The brush head cleans the bottom end of the guide rod to prevent the guide rod from being blocked, thereby ensuring the stability of the welding wire conveying speed, thereby ensuring the welding quality, reducing the maintenance time cost of workers, and improving work efficiency.

[0039] 2. The welding equipment and method for agricultural machinery processing have a guide head slidably installed on the guide rod, and the guide head is configured as a sleeve with a funnel shape at one end. During welding, the guide head blocks the bottom end of the guide rod, and welding slag gathers at the bottom end of the guide head, thereby preventing the welding slag from clogging the guide rod. In addition, a horizontal plate is installed on the guide head, and a third pressure plate is installed on the second vertical rod. The third pressure plate is located above the horizontal plate. During cleaning, the third pressure plate contacts the horizontal plate, and the third pressure plate drives the guide head to move downward. At this time, the welding wire is located inside the guide head, and at the same time, the brush head extends into the guide head and cleans the bottom end of the guide head. Since the brush head will not touch the welding wire, the influence of the welding wire on the brush head is avoided, thereby improving the practicability of the device.

[0040] 3. The welding equipment and method for agricultural machinery processing are characterized in that a wedge-shaped groove is provided at the bottom of the first movable plate, and the wedge-shaped groove is located directly above the second vertical rod. When the second vertical rod moves upward, the top end of the second vertical rod slides along the inclined surface of the wedge-shaped groove, so that the first movable plate moves to one side, and a first pressing plate and a second pressing plate are slidably installed on the first movable plate. When the first movable plate moves to one side, the first pressing plate and the second pressing plate jointly flatten the bent welding wire to make the welding wire tend to be straight, so that the welding wire can enter the guide rod more smoothly, reduce the friction between the welding wire and the top end of the guide rod, ensure the stability of the welding wire conveying speed, and thus improve the reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0042] Figure 2 It is a schematic diagram of the side structure of the present invention in a normal state.

[0043] Figure 3 It is a schematic diagram of the side structure of the present invention during cleaning.

[0044] Figure 4 It is a schematic diagram of the cross-sectional structure of the present invention.

[0045] Figure 5 For the present invention Figure 4 A in the figure is an enlarged structural diagram.

[0046] Figure 6This is a schematic structural diagram of the cleaning mechanism of the present invention.

[0047] Figure 7 This is a schematic structural diagram of the turntable of the present invention.

[0048] Figure 8 For the present invention Figure 4 An enlarged schematic structural diagram at position B in the present invention.

[0049] Figure 9 This is a schematic structural diagram of the straightening mechanism of the present invention.

[0050] Figure 10 This is an exploded schematic structural diagram of the straightening mechanism of the present invention.

[0051] In the figure: 100, base; 101, three-axis moving slide; 102, welding table; 103, positioner; 104, welding torch; 200, cleaning mechanism; 201, welding bracket; 202, fixed sleeve; 203, guiding head; 204, motor; 205, guiding rod; 206, brush head; 207, first compression spring; 208, first vertical rod; 209, first fixing plate; 210, second compression spring; 211, first limiting plate; 212, threaded part; 213, fourth fixing plate; 215, torsion spring; 301, cleaning bracket; 302, cylinder; 303, turntable; 304, cross plate; 305, third pressing plate; 306, annular groove; 307, first wedge block; 308, first baffle; 309, second wedge block; 310, second baffle; 311, second fixing plate; 312, third compression spring; 313, second limiting plate; 400, straightening mechanism; 401, second vertical rod; 402, first moving plate; 403, second moving plate; 404, third fixing plate; 405, first return spring; 406, second return spring; 407, first pressing plate; 408, second pressing plate; 409, arc plate; 411, block; 412, chute; 413, wedge groove; 414, through hole; 415, through slot; 416, third wedge block; 417, fourth wedge block. Detailed implementation manners

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0053] Example 1. This example aims to facilitate the solution of the problem that after the existing welding equipment for agricultural machine processing has been used for a period of time, the welding slag gradually blocks the guide rod, hindering the feeding of the welding wire, causing the feeding speed of the welding wire to decrease, thereby reducing the welding quality, and even interrupting the welding process. Workers have to spend time cleaning the guide rod, greatly reducing the welding work efficiency. Please refer to Figures 1 to 10 A welding device for agricultural machine processing, including a base 100, a three-axis moving slide 101 is installed on the base 100, a welding torch 104 is installed on the slider of the three-axis moving slide 101, a guide rod 205 is installed on the side of the welding torch 104, a welding table 102 is also installed on the base 100, a positioner 103 for clamping and flipping agricultural machine parts is arranged on the welding table 102, a welding bracket 201 is installed on the slider of the three-axis moving slide 101, the welding torch 104 is installed on the welding bracket 201, a fixing sleeve 202 is installed on the guide rod 205, the fixing sleeve 202 is rotatably installed on the welding bracket 201, a motor 204 is installed on the welding bracket 201, and the rotating shaft of the motor 204 is fixedly connected to the fixing sleeve 202. A cleaning mechanism 200 is arranged on the welding table 102, the cleaning mechanism 200 is located on the side of the positioner 103, and the cleaning mechanism 200 includes a brush head 206.

[0054] During cleaning, the three-axis moving slide 101 moves the welding bracket 201 above the cleaning mechanism 200, the bottom end of the guide rod 205 is aligned with the brush head 206, and the brush head 206 cleans the bottom end of the guide rod 205.

[0055] Among them, the three-axis moving slide 101 is a common industrial automation device in the field. It can realize the translational movement of an object in the X, Y, and Z directions, so as to complete the precise adjustment and positioning in three-dimensional space. The three-axis moving slide 101 usually consists of a base, a guide rail, a slider, a transmission device, a control system, etc.; the positioner 103 is used to clamp and flip agricultural machine parts. The positioner 103 usually includes a clamping mechanism and a driving motor. When the positioner 103 rotates, the welding torch 104 synchronously welds the agricultural machine parts. The specific structures and principles of the three-axis moving slide 101 and the positioner 103 are well-known to those skilled in the art and will not be elaborated here.

[0056] This example also proposes a method for welding agricultural machine processing, including the following specific steps:

[0057] S1. Preparation before welding: Check whether the power supply, control system, and wire feeding mechanism are in good condition, clean the welding surface of the workpiece, and remove surface impurities;

[0058] S2, fix the workpiece, fix the workpiece on the positioner 103, then adjust the position of the welding gun 104 to make it reach the predetermined welding workpiece position, and drive the three-axis moving slide 101 to weld the predetermined position with the welding gun 104;

[0059] S3, regular cleaning, cleaning the guide head 203 at the end of the guide rod 205 by the cleaning mechanism 200 every 5-8 hours to keep the guide head 203 unobstructed, the steps are as follows:

[0060] a1. First, the deflection angle of the guide rod 205 is adjusted, and the guide rod 205 originally tilted toward the welding gun 104 is adjusted to be perpendicular to the horizontal ground;

[0061] a2. When the guide rod 205 is adjusted to the right position, the turntable 303 is lifted upward by the cylinder 302. The brush head 206 is pushed by the turntable 303 to rotate and rise and insert into the guide head 203, thereby cleaning the guide head 203.

[0062] a3. The rotating disk 303 deflects due to the impact of the first vertical rod 208 during the rising process, thereby prompting the second vertical rod 401 to move downward. Driven by the second vertical rod 401, the third pressing plate 305 pulls the guide head 203 downward to move toward the brush head 206;

[0063] a4. After cleaning, the tin wire that is bent due to the deflection of the guide rod 205 is straightened by the straightening mechanism 400;

[0064] S4, post-processing, after welding is completed, the weld is polished and inspected to ensure that the welding is defect-free, and then the finished product is moved to the next processing station.

[0065] In this embodiment: the welding equipment and method for agricultural machinery processing, a cleaning mechanism 200 is provided on the welding table 102. During cleaning, the three-axis movable slide 101 moves the welding bracket 201 to the top of the cleaning mechanism 200, and the bottom end of the guide rod 205 is aligned with the brush head 206. The brush head 206 cleans the bottom end of the guide rod 205 to prevent the guide rod 205 from being blocked, thereby ensuring the stability of the welding wire conveying speed, thereby ensuring the welding quality, reducing the maintenance time cost of workers, and thus improving work efficiency.

[0066] Embodiment 2: This embodiment is intended to solve the problem that when the brush head 206 cleans the guide rod 205, it mainly cleans the welding wire outlet at the bottom of the guide rod 205. Since the welding wire is located in the guide rod 205, the welding wire easily interferes with the brush head 206, so that the brush head 206 cannot smoothly extend into the guide rod 205 for cleaning. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figures 1 to 10, a guide head 203 is slidably mounted on a guide rod 205. The guide head 203 is set as a sleeve with one end being funnel-shaped. A first compression spring 207 is arranged inside the guide head 203. A fourth fixing plate 213 is mounted on the guide rod 205. One end of the first compression spring 207 is fixedly connected to the fourth fixing plate 213. During cleaning, the guide head 203 slides downward, the brush head 206 extends into the guide head 203, and the brush head 206 cleans the inside of the guide head 203.

[0067] Specifically, please refer to Figures 4 to 6 , a cleaning bracket 301 is mounted on the welding table 102. A first limiting plate 211 is mounted on the cleaning bracket 301. A first vertical rod 208 is arranged on the cleaning bracket 301. The first vertical rod 208 penetrates through the first limiting plate 211. The brush head 206 is mounted on the first vertical rod 208. A first fixing plate 209 is mounted on the first vertical rod 208. A second compression spring 210 is arranged between the first fixing plate 209 and the first limiting plate 211. A cylinder 302 is mounted on the base 100. The piston rod of the cylinder 302 slidably penetrates through the welding table 102. A turntable 303 is mounted on the piston rod of the cylinder 302. The turntable 303 is located below the first vertical rod 208. When the piston rod of the cylinder 302 moves upward, the turntable 303 drives the first vertical rod 208 to move upward.

[0068] In addition, a threaded portion 212 is arranged on the first vertical rod 208. The threaded portion 212 is threadedly connected to the first limiting plate 211. When the first vertical rod 208 moves upward, the first vertical rod 208 drives the brush head 206 to rotate, thereby improving the cleaning effect of the brush head 206 on the guide head 203.

[0069] In addition, an annular groove 306 is formed in the turntable 303. A first wedge-shaped block 307 is mounted in the annular groove 306. The bottom end of the first vertical rod 208 abuts against the inclined surface of the first wedge-shaped block 307. A first baffle 308 for limiting the first vertical rod 208 is also mounted on one side of the first wedge-shaped block 307. A torsion spring 215 is arranged at the bottom end of the turntable 303. One end of the torsion spring 215 is fixedly connected to the turntable 303. The other end of the torsion spring 215 is fixedly connected to the piston rod of the cylinder 302. When the turntable 303 moves upward, the bottom end of the first vertical rod 208 slides along the inclined surface of the first wedge-shaped block 307, and the turntable 303 rotates.

[0070] Among them, a second limiting plate 313 is installed on the cleaning bracket 301, and a second vertical rod 401 is also installed on the cleaning bracket 301. The second vertical rod 401 slidably penetrates through the second limiting plate 313. A second fixing plate 311 is installed on the second vertical rod 401. A third compression spring 312 is arranged between the second fixing plate 311 and the second limiting plate 313. A second wedge-shaped block 309 is installed in the annular groove 306. The bottom end of the second vertical rod 401 abuts against the inclined surface of the second wedge-shaped block 309. A second baffle 310 for limiting the second vertical rod 401 is installed on one side of the second wedge-shaped block 309. A cross plate 304 is installed on the guiding head 203. A third pressing plate 305 is installed on the second vertical rod 401. The third pressing plate 305 is located above the cross plate 304. The third pressing plate 305 intermittently abuts against the cross plate 304. The inclined surface height of the second wedge-shaped block 309 is greater than the rising height of the turntable 303. When the turntable 303 rotates, the second vertical rod 401 moves downward along the inclined surface of the second wedge-shaped block 309. The third pressing plate 305 abuts against the cross plate 304, and the guiding head 203 moves downward. At the same time, the brush head 206 extends into the guiding head 203 for cleaning.

[0071] It should be noted that the inclined surface height of the first wedge-shaped block 307 is less than the rising height of the turntable 303. Therefore, the sliding distance of the bottom end of the first vertical rod 208 along the first wedge-shaped block 307 is less than the rising height of the turntable 303. When the turntable 303 rises, the first vertical rod 208 appears to move upward; while the inclined surface height of the second wedge-shaped block 309 is greater than the rising height of the turntable 303. Therefore, the sliding distance of the bottom end of the second vertical rod 401 along the inclined surface of the second wedge-shaped block 309 is greater than the rising height of the turntable 303. When the turntable 303 rises, the second vertical rod 401 appears to move downward.

[0072] In this embodiment: A guiding head 203 is slidably installed on the guiding rod 205. The guiding head 203 is set as a sleeve with one end being funnel-shaped. During welding, the guiding head 203 shields the bottom end of the guiding rod 205, and the welding slag accumulates at the bottom end of the guiding head 203, thereby preventing the welding slag from blocking the guiding rod 205. In addition, a cross plate 304 is installed on the guiding head 203, and a third pressing plate 305 is installed on the second vertical rod 401. The third pressing plate 305 is located above the cross plate 304. During cleaning, the third pressing plate 305 abuts against the cross plate 304, and the third pressing plate 305 drives the guiding head 203 to move downward. At this time, the welding wire is located inside the guiding head 203. At the same time, the brush head 206 extends into the guiding head 203 and cleans the inside of the guiding head 203. Since the brush head 206 does not touch the welding wire, the influence of the welding wire on the brush head 206 is avoided, and the practicability of the device is improved.

[0073] Embodiment 3. This embodiment aims to address the problem that after the guide rod 205 rotates, the top end of the guide rod 205 will cause the welding wire to bend. Since the bending radius of the welding wire becomes larger, the frictional force between the welding wire and the inner wall of the guide rod 205 increases, resulting in a relatively large wire feeding resistance. This embodiment is an improvement based on Embodiment 2. Specifically, please refer to Figures 1 to 10 , a straightening mechanism 400 is provided at the top end of the guide rod 205. The straightening mechanism 400 includes a sliding groove 412. A through hole 414 for inserting the welding wire is formed in the sliding groove 412. A third fixing plate 404 is fixedly installed on the sliding groove 412. A first moving plate 402 is slidably installed in the sliding groove 412. A through slot 415 is formed in the first moving plate 402. A second pressing plate 408 is slidably installed on the first moving plate 402. A second return spring 406 is provided between the second pressing plate 408 and the third fixing plate 404. A second moving plate 403 is fixedly installed on the first moving plate 402. A first pressing plate 407 is also slidably installed on the first moving plate 402. A first return spring 405 is provided between the second moving plate 403 and the first pressing plate 407. The first pressing plate 407 and the second pressing plate 408 flatten the bent welding wire to make it tend to be straight.

[0074] In addition, please refer to Figure 8 , a wedge-shaped groove 413 is formed at the bottom of the first moving plate 402. The wedge-shaped groove 413 is located directly above the second vertical rod 401. The top end of the second vertical rod 401 intermittently abuts against the inclined surface of the wedge-shaped groove 413. A third wedge-shaped block 416 is fixedly installed in the sliding groove 412. The first pressing plate 407 is in sliding contact with the inclined surface of the third wedge-shaped block 416. A fourth wedge-shaped block 417 is also fixedly installed on the first moving plate 402. The second pressing plate 408 is in sliding contact with the inclined surface of the fourth wedge-shaped block 417. When the second vertical rod 401 moves upward, the top end of the second vertical rod 401 slides along the inclined surface of the wedge-shaped groove 413, and the first moving plate 402 moves to one side. The first pressing plate 407 and the second pressing plate 408 respectively move upward along the inclined surfaces of the third wedge-shaped block 416 and the fourth wedge-shaped block 417, and then the first pressing plate 407 and the second pressing plate 408 flatten the bent welding wire.

[0075] It should be noted that the bent part of the welding wire is located above the first pressing plate 407 and the second pressing plate 408. Therefore, first, the first pressing plate 407 and the second pressing plate 408 respectively move upward along the inclined surfaces of the third wedge-shaped block 416 and the fourth wedge-shaped block 417. When the first pressing plate 407 and the second pressing plate 408 move to the bent part of the welding wire, the first pressing plate 407 and the second pressing plate 408 flatten the bent welding wire under the thrust of the first return spring 405 and the second return spring 406 respectively.

[0076] Specifically, after the brush head 206 finishes cleaning the guiding head 203, the piston rod of the air cylinder 302 moves downward, and the turntable 303 resets under the action of the torsion spring 215. The bottom end of the second vertical rod 401 slides upward along the second wedge block 309. Since the inclined surface height of the second wedge block 309 is greater than the descending height of the turntable 303, the upward sliding distance of the second vertical rod 401 along the inclined surface of the second wedge block 309 is greater than the descending height of the turntable 303. When the turntable 303 descends, the second vertical rod 401 appears to move upward. Then, the top end of the second vertical rod 401 slides along the inclined surface of the wedge-shaped groove 413, and the first moving plate 402 moves to one side. The first pressing plate 407 and the second pressing plate 408 straighten the bent welding wire.

[0077] In addition, please refer to Figure 9 、 Figure 10 Arc-shaped plates 409 are respectively installed on the first pressing plate 407 and the second pressing plate 408. The welding wire makes sliding contact with the curved surface of the arc-shaped plate 409. A clamping block 411 is installed at the upper end of the chute 412. The clamping block 411 is located between the first pressing plate 407 and the second pressing plate 408, and the clamping block 411 is correspondingly arranged with the through hole 414. The width of the clamping block 411 is equal to the diameter of the through hole 414.

[0078] Among them, the purpose of setting the arc-shaped plate 409 is to prevent the welding wire from being bent at a large angle at the top ends of the first pressing plate 407 and the second pressing plate 408. The design of the arc-shaped plate 409 enables the welding wire to bend along the curved surface of the arc-shaped plate 409 even if it is bent, so as not to generate a large-angle bend. At this time, the bent part of the welding wire is located at the arc-shaped plate 409. After the first pressing plate 407 and the second pressing plate 408 respectively move upward along the inclined surfaces of the third wedge block 416 and the fourth wedge block 417, the first pressing plate 407 and the second pressing plate 408 flatten the bent part of the welding wire; the purpose of setting the clamping block 411 is to limit the first pressing plate 407 and the second pressing plate 408, ensuring that the welding wire between the first pressing plate 407 and the second pressing plate 408 can vertically enter the through hole 414 after being straightened, further ensuring smooth wire feeding of the welding wire.

[0079] In this embodiment: A wedge-shaped groove 413 is formed at the bottom of the first moving plate 402. The wedge-shaped groove 413 is located directly above the second vertical rod 401. When the second vertical rod 401 moves upward, the top end of the second vertical rod 401 slides along the inclined surface of the wedge-shaped groove 413, causing the first moving plate 402 to move to one side. The first pressing plate 407 and the second pressing plate 408 are slidably installed on the first moving plate 402. When the first moving plate 402 moves to one side, the first pressing plate 407 and the second pressing plate 408 jointly flatten the bent welding wire, reducing the friction between the welding wire and the inner wall of the guiding rod 205, so that the welding wire enters the guiding rod 205 more smoothly, ensuring the stability of the wire feeding speed of the welding wire, and further improving the reliability of this device.

[0080] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0081] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A welding device for agricultural machinery processing, comprising a base (100), a three-axis movable slide (101) is installed on the base (100), a welding gun (104) is installed on the slider of the three-axis movable slide (101), a guide rod (205) is installed on the side of the welding gun (104), a welding table (102) is also installed on the base (100), and a positioner (103) for clamping and turning over agricultural machinery parts is provided on the welding table (102), characterized in that: A welding bracket (201) is installed on the slider of the three-axis movable slide (101), the welding gun (104) is installed on the welding bracket (201), a fixing sleeve (202) is installed on the guide rod (205), the fixing sleeve (202) is rotatably installed on the welding bracket (201), a motor (204) is installed on the welding bracket (201), and the rotating shaft of the motor (204) is fixedly connected to the fixing sleeve (202); A cleaning mechanism (200) is provided on the welding table (102), the cleaning mechanism (200) is located on the side of the positioner (103), and the cleaning mechanism (200) comprises a brush head (206); During cleaning, the three-axis movable slide (101) moves the welding bracket (201) to the top of the cleaning mechanism (200), the bottom end of the guide rod (205) is aligned with the brush head (206), and the brush head (206) cleans the inside of the guide rod (205).

2. The agricultural machine processing welding equipment according to claim 1, characterized in that: A guide head (203) is slidably mounted on the guide rod (205); the guide head (203) is configured as a sleeve with a funnel shape at one end; a first compression spring (207) is arranged inside the guide head (203); a fourth fixing plate (213) is mounted on the guide rod (205); one end of the first compression spring (207) is fixedly connected to the fourth fixing plate (213); During cleaning, the guide head (203) slides downward, the brush head (206) extends into the guide head (203), and the brush head (206) cleans the interior of the guide head (203).

3. The agricultural machine processing welding equipment according to claim 2, characterized in that: A cleaning bracket (301) is installed on the welding table (102), a first limiting plate (211) is installed on the cleaning bracket (301), a first vertical rod (208) is provided on the cleaning bracket (301), the first vertical rod (208) penetrates the first limiting plate (211), and the brush head (206) is installed on the first vertical rod (208); A first fixing plate (209) is installed on the first vertical rod (208), and a second compression spring (210) is arranged between the first fixing plate (209) and the first limiting plate (211); A cylinder (302) is installed on the base (100), a piston rod of the cylinder (302) slides through the welding platform (102), a turntable (303) is installed on the piston rod of the cylinder (302), and the turntable (303) is located below the first vertical rod (208); When the piston rod of the cylinder (302) moves upward, the rotating disk (303) drives the first vertical rod (208) to move upward.

4. The agricultural machine processing welding equipment according to claim 3, characterized in that: The first vertical rod (208) is provided with a threaded portion (212), and the threaded portion (212) is threadedly connected to the first limiting plate (211). When the first vertical rod (208) moves upward, the first vertical rod (208) drives the brush head (206) to rotate.

5. The agricultural machine processing welding equipment according to claim 4, characterized in that: The rotating disk (303) is provided with an annular groove (306), a first wedge block (307) is installed in the annular groove (306), the bottom end of the first vertical rod (208) is in contact with the inclined surface of the first wedge block (307), and a first baffle (308) for limiting the first vertical rod (208) is also installed on one side of the first wedge block (307), a torsion spring (215) is provided at the bottom end of the rotating disk (303), one end of the torsion spring (215) is fixedly connected to the rotating disk (303), and the other end of the torsion spring (215) is fixedly connected to the piston rod of the cylinder (302); When the rotating disk (303) moves upward, the bottom end of the first vertical rod (208) slides along the inclined surface of the first wedge block (307), and the rotating disk (303) rotates.

6. The agricultural machine processing welding equipment according to claim 5, characterized in that: A second limiting plate (313) is installed on the cleaning bracket (301), a second vertical rod (401) is also installed on the cleaning bracket (301), the second vertical rod (401) slides through the second limiting plate (313), a second fixing plate (311) is installed on the second vertical rod (401), and a third compression spring (312) is arranged between the second fixing plate (311) and the second limiting plate (313); A second wedge block (309) is installed in the annular groove (306), the bottom end of the second vertical rod (401) abuts against the inclined surface of the second wedge block (309), and a second baffle (310) for limiting the second vertical rod (401) is installed on one side of the second wedge block (309); A horizontal plate (304) is installed on the guide head (203), a third pressing plate (305) is installed on the second vertical rod (401), the third pressing plate (305) is located above the horizontal plate (304), and the third pressing plate (305) intermittently contacts the horizontal plate (304); The height of the inclined surface of the second wedge block (309) is greater than the rising height of the turntable (303). When the turntable (303) rotates, the second vertical rod (401) moves downward along the inclined surface of the second wedge block (309), the third pressure plate (305) contacts the horizontal plate (304), the guide head (203) moves downward, and at the same time, the brush head (206) extends into the guide head (203) for cleaning.

7. The agricultural machine processing welding equipment according to claim 6, characterized in that: A straightening mechanism (400) is arranged at the top end of the guide rod (205), the straightening mechanism (400) comprises a slide groove (412), a through hole (414) for inserting a welding wire is provided on the slide groove (412), and a third fixing plate (404) is fixedly mounted on the slide groove (412); A first movable plate (402) is slidably mounted in the slide groove (412), a through groove (415) is provided on the first movable plate (402), a second pressing plate (408) is slidably mounted on the first movable plate (402), a second return spring (406) is provided between the second pressing plate (408) and the third fixed plate (404), a second movable plate (403) is fixedly mounted on the first movable plate (402), a first pressing plate (407) is also slidably mounted on the first movable plate (402), and a first return spring (405) is provided between the second movable plate (403) and the first pressing plate (407); The first pressing plate (407) and the second pressing plate (408) flatten the bent welding wire to make it straight.

8. The agricultural machine processing welding equipment according to claim 7, characterized in that: A wedge-shaped groove (413) is formed at the bottom of the first movable plate (402), and the wedge-shaped groove (413) is located directly above the second vertical rod (401), and the top end of the second vertical rod (401) intermittently contacts the inclined surface of the wedge-shaped groove (413); A third wedge block (416) is fixedly installed in the slide groove (412), the first pressing plate (407) is in sliding contact with the inclined surface of the third wedge block (416), a fourth wedge block (417) is also fixedly installed on the first movable plate (402), and the second pressing plate (408) is in sliding contact with the inclined surface of the fourth wedge block (417); When the second vertical rod (401) moves upward, the top end of the second vertical rod (401) slides along the inclined surface of the wedge-shaped groove (413), the first movable plate (402) moves to one side, and the first pressing plate (407) and the second pressing plate (408) move upward along the inclined surfaces of the third wedge block (416) and the fourth wedge block (417) respectively, and at the same time, the first pressing plate (407) and the second pressing plate (408) flatten the bent welding wire.

9. The agricultural machine processing welding equipment according to claim 8, characterized in that: An arc plate (409) is respectively installed on the first pressing plate (407) and the second pressing plate (408), and the welding wire is in sliding contact with the curved surface of the arc plate (409). A clamping block (411) is installed on the upper end of the slide groove (412), and the clamping block (411) is located between the first pressing plate (407) and the second pressing plate (408), and the clamping block (411) is arranged corresponding to the through hole (414), and the width of the clamping block (411) is equal to the diameter of the through hole (414).

10. A method for welding equipment for agricultural machinery processing according to claim 9, characterized in that: The specific steps include: S1. Preparation before welding: check whether the power supply, control system and wire feeding mechanism are in good condition, clean the welding surface of the workpiece and remove surface impurities; S2, fixation of the workpiece, fixation of the workpiece on the positioner (103), then adjust the position of the welding gun (104) to make it reach a predetermined welding workpiece position, and the welding gun (104) performs welding at the predetermined position under the drive of the three-axis movable slide (101); S3, regular cleaning, cleaning the guide head (203) at the end of the guide rod (205) by the cleaning mechanism (200) every 5-8 hours to keep the guide head (203) unobstructed, the steps are as follows: a1. First, the deflection angle of the guide rod (205) is adjusted, and the guide rod (205) originally tilted toward the welding gun (104) is adjusted to be in a vertical state with respect to the horizontal ground; a2. When the guide rod (205) is adjusted to the right position, the turntable (303) is lifted upward by the cylinder (302). Under the push of the turntable (303), the brush head (206) rotates and rises and is inserted into the guide head (203), thereby cleaning the guide head (203); a3. During the rising process, the rotating disk (303) is affected by the resistance of the first vertical rod (208) and deflects, thereby prompting the second vertical rod (401) to move downward. Driven by the second vertical rod (401), the third pressing plate (305) pulls the guide head (203) downward, causing it to move toward the brush head (206); a4. After cleaning is completed, the tin wire that has become bent due to the deflection of the guide rod (205) is straightened by the straightening mechanism (400); S4, post-processing, after welding is completed, the weld is polished and inspected to ensure that the welding is defect-free, and then the finished product is moved to the next processing station.

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