A drive axle welding production line

Abstract

The application discloses a drive axle welding production line, the drive axle includes a half axle sleeve and an axle housing body, the drive axle welding production line includes a welding device, an axle housing body conveying device, a half axle sleeve conveying device, a half axle sleeve grabbing device and an axle housing body grabbing device, the welding device is used for welding the half axle sleeve and the axle housing body, the axle housing body conveying device and the half axle sleeve conveying device are respectively located on one side of the welding device, the axle housing body conveying device realizes conveying of the half axle sleeve, the half axle sleeve conveying device realizes conveying of the axle housing body, the axle housing body grabbing device is used for grabbing the axle housing body to the welding device, the half axle sleeve grabbing device is used for grabbing the half axle sleeve to two ends of the axle housing body located on the welding device, and the welding device comprises a first frame body. Compared with the prior art, the drive axle welding production line can realize continuous production of the drive axle, and can greatly improve the welding quality.

Description

Technical Field

[0001] This invention belongs to the field of welding equipment technology, specifically relating to a drive axle welding production line. Background Technology

[0002] The drive axle is one of the key components of a car. It generally consists of multiple parts, such as the axle housing, half-shaft sleeves, spring seats, rear cover, and main reducer housing, which are connected by welding. Therefore, the quality of the drive axle welding directly affects the safety of the car.

[0003] While existing drive axle welding production lines can guarantee the welding quality of drive axles, in actual welding processes, the half-shaft sleeves and axle housing bodies are typically pre-welded to fix them in place before being moved to the next welding step. This operation not only causes production delays and transfer time, reducing the welding efficiency of drive axles, but also hinders continuous production. Furthermore, the transfer of pre-welded workpieces requires additional gripping equipment, increasing the production line's investment cost.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a drive axle welding production line that can solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, a specific embodiment of the present invention provides the following technical solution:

[0007] A drive axle welding production line includes a half-axle sleeve and an axle housing body. The production line comprises welding equipment, an axle housing body conveying device, a half-axle sleeve conveying device, a half-axle sleeve gripping device, and an axle housing body gripping device. The welding equipment is used to weld the half-axle sleeve and the axle housing body. The axle housing body conveying device and the half-axle sleeve conveying device are respectively located on one side of the welding equipment. The axle housing body conveying device conveys the half-axle sleeve, and the half-axle sleeve conveying device conveys the axle housing body. The axle housing body gripping device grips the axle housing body onto the welding equipment, and the half-axle sleeve gripping device grips the half-axle sleeve to both ends of the axle housing body located on the welding equipment. The welding equipment includes a first frame with a sliding plate slidably connected to it. A welding mechanism is installed on one side of the sliding plate, and the welding mechanism is used to pre-weld the half-axle sleeve and the axle housing body. During transportation, secondary welding of the axle sleeve and the axle housing body can be achieved. The number of welding devices is at least two. The gripping arms on the axle housing body gripping device place the axle housing body from the axle housing body conveying device onto different welding devices. The number of axle sleeve gripping devices is one more than the number of welding devices. Two axle sleeve gripping devices are used for one welding device. The two axle sleeve gripping devices then grip two axle sleeves and place them at both ends of the axle housing body. The welding mechanism performs spot welding on the axle sleeve and the axle housing body. After the spot welding fixes the axle sleeve to the axle housing body, the slide plate slides along the direction set by the first frame. During the sliding, the first frame rotates with the axle sleeve and the axle housing body. During the rotation, the welding mechanism performs complete welding on the axle sleeve and the axle housing body.

[0008] In one or more embodiments of the present invention, a mounting plate is fixedly connected to the upper end of the slide plate, and a U-shaped frame matching the axle housing body is fixedly connected to both ends of the mounting plate. A plurality of rotating rollers are rotatably connected to the side wall of the U-shaped frame that contacts the axle housing body. Electromagnetic blocks are installed inside the rotating rollers. A pre-processing mechanism matching the welding part of the half-shaft sleeve and the axle housing body is installed at the upper end of the slide plate.

[0009] In one or more embodiments of the present invention, the pretreatment mechanism includes a telescopic rod, a first spray box is fixedly connected to the output shaft of the telescopic rod, the first spray box has a first opening that matches the welded part of the half-shaft sleeve and the bridge housing body, and a first feeding pipe and a first return pipe are also installed on the first spray box.

[0010] In one or more embodiments of the present invention, a post-processing device is included, which is used to perform post-processing on the axle sleeve and axle housing body after welding. The post-processing device includes a second frame on which a plurality of placement structures for placing the axle sleeve and axle housing body are mounted. A sandblasting treatment mechanism matching the axle sleeve and axle housing body is slidably connected to the second frame.

[0011] In one or more embodiments of the present invention, the sandblasting mechanism includes a mounting ring, on which a plurality of second blasting boxes are slidably connected. The second blasting boxes have a second opening that matches the welded portion of the half-shaft sleeve and the axle housing body. A second feeding pipe is installed on the second blasting box, and a fourth return pipe is installed at the other end of the second blasting box.

[0012] In one or more embodiments of the present invention, a motor is installed on the second spray box, the output shaft of the motor is fixedly connected to a connecting shaft, the connecting shaft is located inside the second spray box, a second opening is provided on the second spray box, a rotary joint is installed between the second feeding pipe and the second spray box, and a first discharge port matching the first feeding chamber is provided on the connecting shaft.

[0013] In one or more embodiments of the present invention, a plurality of grinding wires are fixedly connected to the connecting shaft, and a grinding ball is fixedly connected to one end of the grinding wire away from the connecting shaft. A second feeding cavity is provided on the grinding wire, and a second discharge port matching the second feeding cavity is provided on the grinding ball.

[0014] In one or more embodiments of the present invention, a feeding device is included that is matched with a sandblasting mechanism. The feeding device includes a storage housing containing blasting material. A second discharge pipe that matches a second feed pipe is installed on the storage housing, and a third return pipe that matches a fourth return pipe is installed on the storage housing.

[0015] In one or more embodiments of the present invention, a first discharge pipe matching the first feeding pipe is installed on the storage shell, a second return pipe matching the first return pipe is installed on the sandblasting mechanism, a dust removal mechanism is installed on the dust removal mechanism for filtering dust used for spraying, and an exhaust pipe is installed on the dust removal mechanism, with the end of the exhaust pipe away from the dust removal mechanism connected to the lower part of the first discharge pipe.

[0016] In one or more embodiments of the present invention, the bridge housing body gripping device includes a gantry frame, on which a plurality of gripping arms are slidably connected.

[0017] Compared with the prior art, the drive axle welding production line of the present invention has the following advantages:

[0018] 1) By setting up multiple welding equipment and axle housing body gripping equipment, continuous production of drive axles can be achieved, and the welding of the half-shaft sleeve and axle housing body in the drive axle can be completed during the conveying of the drive axle, avoiding production process stoppages and transfer time losses, and greatly improving the welding efficiency of drive axles.

[0019] 2) By setting up a pretreatment mechanism and a sandblasting mechanism, the welding parts of the half-shaft sleeve and the axle housing body are deoxidized and roughened before welding, which is conducive to subsequent welding. After welding is completed, the flux coating is recycled, which is beneficial to energy conservation and environmental protection. Removing the flux coating can reduce the pressure of welding quality inspection.

[0020] 3) The sandblasting mechanism can recover the heat from the welding part and transfer it to the pre-treatment mechanism. The pre-treatment mechanism transfers the heat to the welding part of the half-shaft sleeve and the axle housing body, raising the temperature of the welding part of the half-shaft sleeve and the axle housing body before welding, which is beneficial to the welding of the half-shaft sleeve and the axle housing body.

[0021] 4) Significantly improves the welding quality of the drive axle, and allows for sandblasting of the welded parts, making them more aesthetically pleasing and facilitating subsequent post-processing such as painting. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of a drive bridge welding production line according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the bridge shell main body conveying device in one embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a half-shaft sleeve conveying device in one embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of a welding device according to an embodiment of the present invention;

[0027] Figure 5 for Figure 4 Schematic diagram of the structure at point A in the middle;

[0028] Figure 6This is a schematic diagram of the pretreatment mechanism in one embodiment of the present invention;

[0029] Figure 7 This is a cross-sectional view of a feeding device according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the bridge shell body gripping device in one embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the structure of a post-processing device in one embodiment of the present invention;

[0032] Figure 10 This is a schematic diagram of the sandblasting mechanism in one embodiment of the present invention. Figure 1 ;

[0033] Figure 11 This is a schematic diagram of the sandblasting mechanism in one embodiment of the present invention. Figure 2 ;

[0034] Figure 12 This is a cross-sectional view of a sandblasting mechanism in one embodiment of the present invention;

[0035] Figure 13 for Figure 12 Schematic diagram of the structure at point B;

[0036] Figure 14 for Figure 12 Schematic diagram of the structure at point C.

[0037] Explanation of key figure labels:

[0038] 1. Axle housing body conveying equipment; 2. Half-shaft sleeve conveying equipment; 3. Welding equipment; 4. Half-shaft sleeve gripping equipment; 5. Axle housing body gripping equipment; 6. Feeding equipment; 7. Post-processing equipment;

[0039] 8. First conveying mechanism; 801. U-shaped clamp;

[0040] 9. Vibratory feeder; 10. Second conveying mechanism;

[0041] 11. First frame; 12. Slide plate; 13. Mounting plate; 14. U-shaped frame; 15. Rotating roller; 16. Welding mechanism; 17. Pre-treatment mechanism; 18. Telescopic rod; 19. First spray box; 1901. First opening; 20. First feeding pipe; 21. First return pipe;

[0042] 23. Material storage shell; 2301. Second return pipe; 2302. First discharge pipe; 24. Second discharge pipe; 25. Third return pipe; 26. Dust removal mechanism; 2601. Exhaust pipe;

[0043] 27. Gantry crane; 28. First gripping arm; 29. ​​Second gripping arm;

[0044] 30. Second frame; 3001. Slide groove; 31. Placement structure; 32. Sandblasting mechanism; 33. Mounting ring; 3301. Second slide groove; 34. First slider; 35. Second spray box; 3501. Second opening; 36. Motor; 37. Connecting shaft; 3701. First feeding chamber; 3702. First discharge port; 38. Grinding wire; 3801. Second feeding chamber; 39. Grinding ball; 3901. Second discharge port; 40. Second feeding pipe; 41. Rotary joint; 42. Fourth return pipe. Detailed Implementation

[0045] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0046] like Figure 1 As shown, in one embodiment of the present invention, a drive axle welding production line is provided, wherein the drive axle includes a half-shaft sleeve and an axle housing body, which are welded together. The welding production line includes an axle housing body conveying device 1 and a half-shaft sleeve conveying device 2. The axle housing body conveying device 1 is used to convey the axle housing body, and the half-shaft sleeve conveying device 2 is used to convey the half-shaft sleeve. Figure 3 As shown, the half-shaft sleeve conveying device 2 includes a vibratory plate 9 and a second conveying mechanism 10. The half-shaft sleeve is first conveyed to the vibratory plate 9, and the vibratory plate 9 unifies the position of the half-shaft sleeve so that when the half-shaft sleeve is on the second conveying mechanism 10, they are all in a uniform state, which facilitates the subsequent gripping of the half-shaft sleeve.

[0047] Among them, such as Figures 1-2 As shown, the bridge shell body conveying device 1 includes a first conveying mechanism 8. Multiple U-shaped clamps 801 that match the bridge shell body are fixedly connected to the first conveying mechanism 8. Both ends of the bridge shell body are located in the U-shaped clamps 801, which can ensure the stability of the bridge shell body conveyed on the first conveying mechanism 8 and make the first conveying mechanism 8 less prone to displacement and deviation.

[0048] The drive axle welding production line also includes welding equipment 3, which is used to weld the half-axle sleeves and the axle housing body. For example... Figure 1As shown, a bridge housing body gripping device 5 is installed at the upper end of the welding equipment 3. The bridge housing body gripping device 5 is used to grip the bridge housing body on the bridge housing body conveying device 1 and place it on the welding equipment 3. A half-shaft sleeve gripping device 4 is installed on one side of the half-shaft sleeve conveying device 2. The half-shaft sleeve gripping device 4 is used to grip the half-shaft sleeve on the second conveying mechanism 10 and align the welding end of the half-shaft sleeve with the welding end of the bridge housing body. Then, the welding equipment 3 welds the two together.

[0049] like Figures 3-6 As shown, the welding equipment 3 includes a first frame 11, on which a sliding plate 12 is slidably connected. Welding mechanisms 16 are fixedly connected to both ends of the sliding plate 12, and the welding mechanisms 16 are used to weld the half-shaft sleeve and the axle housing body on the welding equipment 3. A mounting plate 13 is fixedly connected to the upper end of the sliding plate 12. U-shaped frames 14 matching the axle housing body are mounted on both ends of the mounting plate 13. Rotating rollers 15 are rotatably connected to the contact surfaces of the U-shaped frames 14 and the axle housing body, and the rotating rollers 15 can drive the axle housing body to rotate. An electromagnetic block (not shown in the figure) is installed inside the rotating rollers 15 to maintain the stability of the axle housing body during rotation, preventing the axle housing body from shaking during rotation and affecting the welding quality.

[0050] In this embodiment, there are at least two welding devices 3. The gripping arms on the axle housing body gripping device 5 place the axle housing body from the axle housing body conveying device 1 onto different welding devices 3. The number of half-shaft sleeve gripping devices 4 is one more than the number of welding devices 3, with two half-shaft sleeve gripping devices 4 used for one welding device 3. That is, during welding, the gripping arms on the axle housing body gripping device 5 place the axle housing body on the U-shaped frame 14 of one of the welding devices 3, and the two half-shaft sleeve gripping devices 4 then grip the two half-shaft sleeves and place them at both ends of the axle housing body. Spot welding is performed on the half-shaft sleeves and the axle housing body by the welding mechanism 16, which provides a simple fixation between the half-shaft sleeves and the axle housing body. After spot welding fixes the two, the slide plate 12 slides along the direction set by the first frame 11. During sliding, the rotating roller 15 rotates, taking the half-shaft sleeves and the axle housing body with it. During the rotation, the welding mechanism 16 further welds the half-shaft sleeves and the axle housing body. This means that welding of the workpiece can be carried out during the transfer process, avoiding the loss of transfer time caused by production downtime.

[0051] During the above process, the gripping arm on the axle housing body gripping device 5 places the axle housing body on another welding device 3, and repeats the above welding steps to achieve uninterrupted pre-welding and welding of the axle housing body and the half-shaft sleeve. This is beneficial for improving the welding efficiency of the drive axle and for the continuous production of the drive axle.

[0052] The gripping arm includes a first gripping arm 28 and a second gripping arm 29. The first gripping arm 28 is used to place the axle housing body on the axle housing body conveying device 1 onto the welding device 3, and the second gripping arm 29 is used to remove the axle housing body from the welding device 3 and place it on the subsequent processing device.

[0053] like Figures 4-6 As shown, the two ends of the slide plate 12 are respectively fixedly connected to the pre-treatment mechanism 17. The pre-treatment mechanism 17 realizes the pre-treatment of the axle housing body and the half-shaft sleeve before welding. It is used to remove the oxide layer of the welded part of the axle housing body and the half-shaft sleeve, and to roughen the surface of the welded part of the axle housing body and the half-shaft sleeve, which is conducive to the welding of the axle housing body and the half-shaft sleeve.

[0054] Specifically, such as Figures 4-6 As shown, the pretreatment mechanism 17 includes a telescopic rod 18, and a first spray box 19 is fixedly connected to the upper end of the telescopic rod 18. The first spray box 19 has a first opening 1901 that matches the welded part of the axle housing body and the half-shaft sleeve. A first feeding pipe 20 and a first return pipe 21 are installed on the first spray box 19. The first feeding pipe 20 is used to transport the spray material into the first opening 1901 and to perform sandblasting treatment on the welded part of the axle housing body and the half-shaft sleeve in the first opening 1901. The first return pipe 21 is used to recover the spray material after sandblasting.

[0055] Furthermore, the first spray box 19 is a semi-circular hollow shell. The edge of the first opening 1901 is pressurized by the telescopic rod 18, and the edge of the first opening 1901 is tightly fitted with the bridge housing body and the half-shaft sleeve. When the first feeding pipe 20 feeds the spray material into the first spray box 19, the spray material will not leak from the connection between the first spray box 19 and the bridge housing body and the half-shaft sleeve. When the first feeding pipe 20 outputs the spray material, the rotating roller 15 rotates, causing the bridge housing body and the half-shaft sleeve to rotate. During the rotation, the spray material can cover the welded parts of the bridge housing body and the half-shaft sleeve, so that the welded parts can be deoxidized and roughened.

[0056] like Figure 1 and Figure 7As shown, the abrasive used in the first abrasive box 19 is supplied by the feeding device 6. The feeding device 6 includes a storage shell 23, in which the abrasive is stored. A second return pipe 2301 and a first discharge pipe 2302 are installed on the storage shell 23. The first discharge pipe 2302 is connected to the first feed pipe 20, and the second return pipe 2301 is connected to the first return pipe 21. Even after the abrasive is used up, it can still enter the storage shell 23, which is beneficial for recycling the abrasive and reducing the welding cost of the axle housing body and the half-shaft sleeve. After the sandblasting treatment of the welded parts of the axle housing body and the half-shaft sleeve is completed, the telescopic rod 18 retracts, and the first abrasive box 19 is used to move away from the welded parts of the axle housing body and the half-shaft sleeve. Then, the welding mechanism 16 is used to further weld the welded parts of the axle housing body and the half-shaft sleeve, which can significantly improve the welding quality of the axle housing body and the half-shaft sleeve.

[0057] The first return pipe 21 can recover all the spray material in the first spray box 19, which can avoid the situation of spray material residue. The spray material is sprayed from the lower part of the welded part of the axle housing body and the half shaft sleeve. Due to gravity and the rotation of the axle housing body and the half shaft sleeve, the spray material remaining on the welded part of the axle housing body and the half shaft sleeve can be thrown off, avoiding the situation where the spray material residue affects the welding quality.

[0058] The welding equipment 3 is also equipped with a post-processing device 7 at its rear end. The post-processing device 7 performs post-processing on the welded parts of the axle housing body and the half-shaft sleeve. The post-processing can remove excess welds from the welded parts of the axle housing body and the half-shaft sleeve, and can also recycle the flux coating of the welded parts of the axle housing body and the half-shaft sleeve.

[0059] Specifically, the hardness of the coating material is generally between 60 and 70 HRA, while the hardness of the spray material is generally between 50 and 80 HRA. This means that after the coating material is broken down, it can be mixed with the spray material, thereby enabling the recycling of the coating material.

[0060] like Figures 9-14 As shown, the post-processing equipment 7 includes a second frame 30, on which a sandblasting mechanism 32 is slidably connected. The inner diameter of the sandblasting mechanism 32 is larger than the outer diameter of the axle sleeve, meaning the sandblasting mechanism 32 can pass through the axle sleeve to reach the welded portion between the axle sleeve and the axle housing body. Multiple second abrasive boxes 35 are slidably connected to the sandblasting mechanism 32, and post-processing components are installed within each second abrasive box 35. The post-processing components complete the post-processing of the welded portion between the axle sleeve and the axle housing body.

[0061] like Figure 9 As shown, a placement structure 31 is installed on the second frame 30. The structure of the placement structure 31 is the same as that of the U-shaped frame 14. The placement structure 31 can also rotate with the workpiece.

[0062] The mounting ring 33 has a first slider 34 fixedly connected to its lower end. The second frame 30 has a first groove 3001 at its upper end that matches the first slider 34, and the first slider 34 is slidably connected within the first groove 3001. The mounting ring 33 has a second groove 3301, and the second spray box 35 has a second slider (not shown in the figure) fixedly connected to it. The second slider is slidably connected within the second groove 3301, meaning that the second spray box 35 slides along the direction of the second groove 3301.

[0063] like Figures 9-14 As shown, the post-processing assembly includes a second feed pipe 40 and a fourth return pipe 42. Both the second feed pipe 40 and the fourth return pipe 42 are connected to the axle housing body gripping device 5. The second feed pipe 40 feeds the aerosol into the second aerosol box 35, and the fourth return pipe 42 is used to recover the aerosol in the second aerosol box 35. Specifically, Figure 7 Combination Figures 9-14 As shown, a third return pipe 25 and a second discharge pipe 24 are fixedly connected to the storage shell 23. The second discharge pipe 24 and the second feeding pipe 40 are interconnected. The third return pipe 25 and the fourth return pipe 42 are interconnected.

[0064] like Figures 9-14 As shown, the second spray box 35 has a second opening 3501 that matches the welded part of the half-shaft sleeve and the axle housing body. The second opening 3501 completely covers the welded part of the half-shaft sleeve and the axle housing body and is an interference fit with the welded part of the half-shaft sleeve and the axle housing body. During the output and recovery process, the second opening 3501 will not leak from the contact part of the welded part of the half-shaft sleeve and the axle housing body.

[0065] To further improve the effect of spraying the welded parts of the axle sleeve and axle housing body, such as... Figures 9-14 As shown, a motor 36 is mounted on the second spray box 35. A connecting shaft 37 is fixedly connected to the output shaft of the motor 36. A first feeding chamber 3701 is opened inside the connecting shaft 37. A rotary joint 41 is fixedly connected to the connecting shaft 37, and the rotary joint 41 is connected to the second feeding pipe 40. The spray material can enter the first feeding chamber 3701 from the second feeding pipe 40 and the rotary joint 41. The connecting shaft 37 has multiple first discharge ports 3702 that communicate with the first feeding chamber 3701. The spray material is finally sprayed out from the first discharge ports 3702 to treat the flux coating and excess weld points. By spraying the spray material in a rotating manner, the texture of the welded part can be further improved, and the flux coating and excess weld points can be treated, which is beneficial to improving the welding quality. After the flux coating is treated, it is easier for manual observation of the welding quality, reducing the difficulty of welding quality inspection.

[0066] like Figures 9-14As shown, a grinding wire 38 is fixedly connected to one end of the connecting shaft 37 near the welded part of the half-shaft sleeve and the axle housing body, and a grinding ball 39 is fixedly connected to the other end of the grinding wire 38 away from the connecting shaft 37. A second feeding chamber 3801 matching the first feeding chamber 3701 is provided on the grinding wire 38, and a second discharge port 3901 matching the second feeding chamber 3801 is provided on the grinding ball 39. That is, the abrasive can be selectively ejected from either the first discharge port 3702 or the second discharge port 3901. First, the grinding wire 38 and grinding ball 39 are rotated by the motor 36. The grinding wire 38 and grinding ball 39 rub against the welded part, performing preliminary treatment on the flux residue and excess weld points of the welded part. This process removes and breaks up the flux residue before the abrasive is ejected through the second discharge port 3901. The sprayed material is always directed towards one end of the welded part, and the sprayed material can achieve secondary breakage of the coating.

[0067] After being broken down multiple times, the drug coating is drawn into the storage shell 23 through the fourth return pipe 42. The third return pipe 25 is equipped with a filter screen at one end of the storage shell 23. The filter screen can filter out drug coatings that do not meet the specified coarseness. The spray material continuously recovered by the third return pipe 25 can fully contact the drug coating, realizing the three-stage crushing of the drug coating until the drug coating is crushed to a qualified state and enters the storage shell 23 from the filter screen.

[0068] In actual use, the second blasting box 35 is positioned away from the workpiece, and the first slider 34 is also away from the workpiece. After the workpiece is placed on the placement structure 31, the first slider 34 moves towards one end of the workpiece along the direction of the first groove 3001, aligning the second opening 3501 with the welded portion of the axle sleeve and the bridge housing body. The second blasting box 35 moves towards the end closer to the workpiece via the second slider along the direction of the second groove 3301 until it contacts the welded portion of the axle sleeve and the bridge housing body, forming an interference fit. The motor 36 is started, causing the connecting shaft 37, grinding wire 38, and grinding ball 39 to rotate. Within the second blasting box 35, the welded portion of the axle sleeve and the bridge housing body is processed. Simultaneously with the start of the motor 36, the placement structure 31 also drives the workpiece to rotate, performing comprehensive post-processing on the welded portion of the workpiece.

[0069] The welding part is processed by motor 36, and then fed by feeding device 6 to the second outlet 3901. The aerosol is sprayed onto one end of the welding part for secondary processing, further improving the quality of the welding part. Finally, the welding part is processed a third time through the first outlet 3702. The first outlet 3702 sprays aerosol to process the welding part, and at the same time, it can clean the residual material adhering to the grinding wires 38 and grinding balls 39, so as to avoid scratching the welding part or workpiece caused by residual material adhering to the grinding wires 38 and grinding balls 39 during rotation.

[0070] In addition, the welded portion of the workpiece still retains some heat after welding. During the material recovery process, the temperature of the welded portion can be reduced, and the hot air is extracted into the storage shell 23. Some dust also enters the storage shell 23. Figure 7 As shown, a dust removal mechanism 26 is installed at the upper end of the storage shell 23. The dust removal mechanism 26 can handle the dust and fine abrasive particles inside the storage shell 23, that is, it can handle impurities in the abrasive particles and abrasive particles that do not conform to the sandblasting process. The dust removal mechanism 26 filters impurities and can store them. An exhaust pipe 2601 is installed on the dust removal mechanism 26, and the other end of the exhaust pipe 2601 is fixedly connected to the first discharge pipe 2302. During the process of conveying abrasive particles through the first discharge pipe 2302, hot air and abrasive particles are output simultaneously. Sandblasting heats the surface of the workpiece, and then the hot air provides secondary heating, which helps to increase the heat of the welding part of the workpiece, thereby improving the welding quality.

[0071] like Figures 1 to 14 As shown, in use, the axle housing body is placed on the axle housing body conveying device 1, and the half-shaft sleeve is placed on the half-shaft sleeve conveying device 2. The axle housing body gripping device 5 picks up the axle housing body from the axle housing body conveying device 1 and transfers it to the welding device 3. The half-shaft sleeve gripping device 4 picks up the half-shaft sleeve from the half-shaft sleeve conveying device 2 and transfers it to both ends of the axle housing body on the welding device 3, aligning it with the axle housing body. At this time, the two are pre-welded and fixed by the welding mechanism 16. Generally, 2 to 3 weld points are welded at the connection between the axle housing body and the half-shaft sleeve. After the pre-welding is completed, the slide plate 12 slides along the direction set by the first frame 11. During the sliding process, the telescopic rod 18 is raised, so that the first spray box 19 contacts the welding part of the workpiece and drives the rotating roller 15. The rotating roller 15 drives the workpiece to rotate. When the workpiece rotates, the spray material in the storage shell 23 is sprayed out from the first spray box 19 through the first feeding pipe 20 and contacts the welding part of the workpiece to achieve pre-treatment of the workpiece. The spray material is then recycled by the first return pipe 21. The first spray box 19 can not only deoxidize the welded part of the workpiece, but also preheat the welded part of the workpiece, which is conducive to the subsequent welding of the welded part of the workpiece.

[0072] The rotating roller 15 drives the workpiece to rotate 2-3 revolutions. The telescopic rod 18 retracts, moving the first spray box 19 away from the workpiece, and the welding mechanism 16 completes the welding of the workpiece's welded portion. During welding, the workpiece rotates; a 360° rotation completes the welding. With the assistance of the rotating roller 15, the workpiece rotates smoothly, minimizing vibration and resulting in high-quality welding. This enables continuous production of the drive axle, significantly improving its production efficiency and quality.

[0073] After the workpiece is welded, it is sent to the post-processing equipment 7 by the bridge housing body gripping device 5. The sandblasting mechanism 32 on the post-processing equipment 7 can perform post-processing of the welded part of the workpiece and can recycle the flux coating, which reduces the heat of the welded part and transfers the heat of the welded part to the pre-processing part before welding, which is beneficial to energy saving and environmental protection.

[0074] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0075] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drive axle welding production line, wherein the drive axle comprises a half-shaft sleeve and a axle housing body, characterized in that, include: Welding equipment, the welding equipment being used for welding the axle sleeve and the axle housing body; The axle housing body conveying equipment and the half-shaft sleeve conveying equipment are respectively located on one side of the welding equipment. The axle housing body conveying equipment realizes the conveying of the half-shaft sleeve, and the half-shaft sleeve conveying equipment realizes the conveying of the axle housing body. A half-shaft sleeve gripping device and an axle housing body gripping device, wherein the axle housing body gripping device is used to grip the axle housing body onto a welding device, and the half-shaft sleeve gripping device is used to grip the half-shaft sleeve onto both ends of the axle housing body located on the welding device; The welding equipment includes a first frame, on which a sliding plate is slidably connected. A welding mechanism is installed on one side of the sliding plate. The welding mechanism is used to pre-weld the half-shaft sleeve and the axle housing body. During transportation, it can realize secondary welding of the half-shaft sleeve and the axle housing body. The number of welding devices is at least two. The gripping arms on the axle housing body gripping device place the axle housing body on the axle housing body conveying device onto different welding devices. The number of half-shaft sleeve gripping devices is one more than the number of welding devices. Two half-shaft sleeve gripping devices are used for one welding device. The two half-shaft sleeve gripping devices then grip the two half-shaft sleeves and place them at both ends of the axle housing body, respectively. The welding mechanism then performs spot welding on the half-shaft sleeves and the axle housing body. After the spot welding fixes the half-shaft sleeve to the axle housing body, the slide plate slides along the direction set by the first frame. When sliding, the first frame rotates with the half-shaft sleeve and the axle housing body. During the rotation, the welding mechanism performs complete welding on the half-shaft sleeve and the axle housing body. The upper end of the slide plate is equipped with a pre-treatment mechanism that matches the welding parts of the half-shaft sleeve and the axle housing body. The pretreatment mechanism includes a telescopic rod, and a first spray box is fixedly connected to the output shaft of the telescopic rod. The first spray box has a first opening that matches the welded part of the half-shaft sleeve and the bridge housing body. The first spray box is also equipped with a first feeding pipe and a first return pipe; Includes post-processing equipment, which is used to perform post-processing on the half-shaft sleeve and bridge housing body after welding; The post-processing equipment includes a second frame, on which multiple placement structures for placing the half-shaft sleeve and the axle housing body are installed, and a sandblasting treatment mechanism that matches the half-shaft sleeve and the axle housing body is slidably connected to the second frame. This includes feeding equipment that is compatible with the sandblasting process; The feeding device includes a storage shell, which stores spray material. The storage shell is equipped with a first discharge pipe that matches the first feeding pipe, and the sandblasting mechanism is equipped with a second return pipe that matches the first return pipe. A dust removal mechanism is installed on the storage shell. The dust removal mechanism is used to filter the dust used for spraying. An exhaust pipe is installed on the dust removal mechanism. The end of the exhaust pipe away from the dust removal mechanism is connected to the bottom of the first discharge pipe.

2. The drive axle welding production line according to claim 1, characterized in that, The upper end of the slide is fixedly connected to a mounting plate, and the two ends of the mounting plate are respectively fixedly connected to U-shaped frames that match the main body of the bridge shell; Multiple rotating rollers are rotatably connected to the side wall of the U-shaped frame that contacts the main body of the bridge shell, and electromagnetic blocks are installed inside the rotating rollers.

3. The drive axle welding production line according to claim 1, characterized in that, The sandblasting mechanism includes a mounting ring, on which a plurality of second blasting boxes are slidably connected. Each second blasting box has a second opening that matches the welded portion of the half-shaft sleeve and the axle housing body. A second feeding pipe is installed on the second blasting box, and a fourth return pipe is installed at the other end of the second blasting box.

4. The drive axle welding production line according to claim 3, characterized in that, A motor is installed on the second spray box, and the output shaft of the motor is fixedly connected to a connecting shaft, which is located inside the second spray box. The second spray box has a second opening, a rotary joint is installed between the second feeding pipe and the second spray box, and the connecting shaft has a first discharge port that matches the first feeding chamber.

5. A drive axle welding production line according to claim 4, characterized in that, Multiple grinding wires are fixedly connected to the connecting shaft, and a grinding ball is fixedly connected to the end of the grinding wire away from the connecting shaft. The grinding filament has a second feeding chamber, and the grinding ball has a second discharge port that matches the second feeding chamber.

6. The drive axle welding production line according to claim 5, characterized in that, The storage shell is equipped with a second discharge pipe that matches the second feeding pipe, and the storage shell is equipped with a third return pipe that matches the fourth return pipe.

7. The drive axle welding production line according to claim 1, characterized in that, The bridge shell body gripping device includes a gantry frame, on which several gripping arms are slidably connected.

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