Wheel hub multi-point collaborative welding device with anti-splashing structure

Abstract

The application discloses a wheel hub multi-point collaborative welding device with a splash-proof structure and relates to the technical field of wheel hub multi-point collaborative welding. The device comprises a rotary welding box and a placing rack. The placing rack is fixed on the top of the rotary welding box and on both sides of the channel in a central symmetrical manner through bolts. The device drives the single-side base plate to move by a transmission assembly, engages a gear rod with a transmission gear, and completes the sliding of the bottom base plate. The distance between the welding areas of the rotary welding assembly on the two sides of the base plate and the wheel hub assembly is adjusted. According to the position distribution of the reinforcing ribs on the wheel hub, the contact height of the limiting air cylinder and the base plate is controlled to realize the adaptive adjustment of the upper and lower rotary welding assemblies and the wheel hub assembly. Meanwhile, the device is driven by a transmission belt. The sliding plate slides between the limiting plate groups while completing automatic alternation. When the wheel hub is welded on the single-side rotary clamping assembly, space is left on the other side for material exchange, and the whole wheel hub multi-point collaborative welding efficiency is adapted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hub multi-point collaborative welding, in particular to a hub multi-point collaborative welding device with a splash-proof structure. BACKGROUND

[0002] The hub needs to bear various complex stresses from the road surface during vehicle driving, such as torque and lateral force generated when the vehicle accelerates, decelerates, and turns, and impact load received when driving on uneven road surface. The welded reinforcing ribs can effectively disperse stress, enhance the overall structural strength of the hub, and reduce the risk of deformation and damage.

[0003] According to the patent document CN209667252U, the reinforcing rib protruding portions at both ends are matched with the round rectangular holes of the web plate, and the reinforcing rib is welded and connected. The reinforcing rib has a supporting effect on the web plate in the axial direction, and the bottom of the reinforcing rib is welded and connected with the hub, which can transmit the radial force of the web plate to the hub and increase the bending strength of the web plate. Before welding, the surface of the hub and the reinforcing rib needs to be cleaned to remove oil stains, rust, scale and other impurities to ensure the cleanliness of the welding site and improve the welding quality. According to the design requirements, the reinforcing rib is accurately fixed on the corresponding position of the hub using appropriate tooling fixtures to ensure that the assembly gap and position accuracy between the two meet the welding process requirements. According to the selected welding method and process parameters, welding operation is carried out. After welding, appearance inspection of the welded joint is required to check whether there are pores, cracks, incomplete penetration and other defects.

[0004] The most common method is to use a mechanical arm to cooperate with a laser welding machine for rotary welding, and to cooperate with a semi-automatic feeding and overturning device. The overall welding efficiency is low, the regular structure of the reinforcing rib and the hub combination is not utilized for multi-point collaborative welding, and single-sided welding overturning and feeding are also required, which increases the standby downtime of the welding device and affects the scale production of the hub.

[0005] Therefore, we propose a hub multi-point collaborative welding device with a splash-proof structure. SUMMARY

[0006] The purpose of the present application is to provide a hub multi-point collaborative welding device with a splash-proof structure to solve the problems raised in the background art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: the wheel hub multi-point collaborative welding equipment with the anti-splashing structure, comprising a rotary welding box and a placing rack, the top of the rotary welding box and the two sides of the channel are fixed with the placing rack by the center symmetric bolt, the two sides of the placing rack are symmetrically installed with the second backing plate and the first backing plate from bottom to top, the top of the placing rack is fixed with a transmission assembly by the bolt, the output end of the transmission assembly penetrates the placing rack and is fixed with the top first backing plate, the side of the first backing plate is installed with the second backing plate, and the second backing plate is fixed with a rotary welding assembly by the bolt;

[0008] The inner wall of the bottom of the rotary welding box is uniformly fixed with a limiting plate group by welding, the top of the limiting plate group is slidably connected with a rotary clamping assembly, and the bottom of the rotary clamping assembly is rotatably connected with an abutting column.

[0009] Further, the bottom of the first backing plate is slidably connected with the second backing plate, the second backing plate is provided with a reset spring, and the top of the first backing plate is fixedly connected with the second backing plate.

[0010] Further, the side of the first backing plate is fixed with a rack rod by center symmetric welding, the side of the placing rack is movably connected with a transmission gear through a bearing, and the two rack rods are respectively meshed with the transmission gears.

[0011] Further, the top of the rotary welding box is fixedly connected with a limiting cylinder by the bolt, and one end of the limiting cylinder abuts against the second backing plate.

[0012] Further, the one side of the limiting plate group on the bottom of the rotary welding box is slidably connected with a sliding plate one, the top of the sliding plate one is fixed with a rotary clamping assembly by the bolt, and the bottom of the rotary clamping assembly is installed with an abutting column penetrating the sliding plate one and being perpendicular to the middle plate piece of the limiting plate group.

[0013] Further, the side of the middle plate piece of the limiting plate group is slidably connected with a sliding plate two, the one side of the sliding plate two is slidably connected with a sliding plate three, the top of the sliding plate three is synchronously installed with a rotary clamping assembly, a limiting groove is formed in the one side plate piece of the limiting plate group, the one side of the sliding plate three is fixedly connected with a limiting wheel, and the limiting wheel is clamped with the limiting groove.

[0014] Further, a rotary head is movably connected to the middle plate piece of the limiting plate group, a transmission wheel is movably connected to the inner wall of the bottom of the rotary welding box and between the limiting plate groups, the transmission wheel is provided with a transmission belt, and the sliding plate one and the sliding plate two are fixed on the two sides of the transmission belt.

[0015] The wheel hub multi-point collaborative welding method with the anti-splashing structure is:

[0016] Adjust the position of the laser welding guns on both sides according to the position of the wheel hub pressing on the reinforcing rib. First, fix the reinforcing rib on the single-sided rotating clamping assembly, then put the wheel hub on and press it with the pressing mechanism. Then, drive the single wheel hub assembly to move to the bottom of the placement frame by rotating the transmission belt.

[0017] The transmission assembly pushes the top pad 1 downward, and through the meshing of the rack and transmission gear, the bottom pad 1 moves upward synchronously. As the bottom pad 2 descends, the installed rotary welding assembly begins to move and reaches the abutment position of the wheel hub assembly. The control limit cylinder moves the top pad 2 to intercept, while the rotary welding assembly on the bottom pad 2 continues to move upward. The distance between the welding gun on the bottom rotary welding assembly and the wheel hub abutment position is observed. After controlling the positions of the upper and lower rotary welding assemblies and the wheel hub assembly, the rotating head is used to drive the rotary clamping assembly to rotate, and the rotary welding assembly works to weld the wheel hub and reinforcing rib.

[0018] After welding is completed, the rotation of the transmission belt moves the rotating clamping assembly on the other side. The rotating clamping assembly on the other side carries the welded hub from the bottom and moves away to perform a new round of welding of the hub and reinforcing rib.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In this invention, a multi-directional symmetrical welding structure is adopted, and the position and depth of the rotating welding component are adjusted in combination with the distribution of reinforcing ribs on the surface of the wheel hub. This achieves adaptive welding distance adjustment while coordinating multi-point welding with the rotation of the wheel hub. Multi-point welding work on both sides of the wheel hub can be carried out without flipping, which improves the overall wheel hub welding efficiency. Accompanied by the transmission component, the single-sided pad moves, and the bottom pad slides by using the gear and the transmission gear to mesh. The distance between the welding area of ​​the rotating welding component and the wheel hub assembly on both sides of the pad is adjusted. According to the position distribution of the reinforcing ribs on the wheel hub, the contact height between the limit cylinder and the pad is controlled, so as to achieve adaptive adjustment of the upper and lower rotating welding components and the wheel hub assembly. This provides high flexibility and improves the double-sided welding effect of the wheel hub.

[0021] 2. In this invention, a transmission belt is used to drive the slide plate to automatically alternate while sliding between the limiting plate groups. This allows for welding of the wheel hub on one side of the rotating clamping assembly, while leaving space on the other side for material exchange. This adapts to the multi-point collaborative welding efficiency of the entire wheel hub, shortens the waiting time of the welding mechanism, and improves the overall welding efficiency. At the same time, the rotating head installed between the limiting plate groups is matched with the bottom abutment post of the rotating clamping assembly to control the rotation of the clamping mechanism and avoid the frequent dragging and damage of the connecting wires when the linearly connected rotating mechanism alternates. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the multi-point collaborative welding equipment for wheel hubs with an anti-splash structure according to the present invention;

[0023] Figure 2 It is the mounting structure schematic view of the limit plate group of the inner wall of the rotary welding box of the application;

[0024] Figure 3 It is the main view schematic view of the hub multi-point collaborative welding equipment with the anti-splashing structure of the application;

[0025] Figure 4 It is the top view schematic view of the hub multi-point collaborative welding equipment with the anti-splashing structure of the application;

[0026] Figure 5 It is the symmetric setting schematic view of the cushion plate one and the cushion plate two on the placing rack of the application;

[0027] Figure 6 It is the bottom abutting wheel and the chuck clamping structure schematic view of the rotary clamping assembly of the application;

[0028] Figure 7 It is the chuck mounting structure schematic view of the middle plate of the limit plate group of the application;

[0029] Figure 8 It is the synchronous welding schematic view of the upper and lower two sides of the hub multi-point collaborative welding equipment of the application.

[0030] In the figure: 1, rotary welding box; 2, placing rack; 3, transmission assembly; 4, cushion plate one; 5, cushion plate two; 6, rotary welding assembly; 7, toothed rod; 8, transmission tooth; 9, return spring; 10, limit air cylinder; 11, limit plate group; 12, sliding plate one; 13, rotary clamping assembly; 14, abutting column; 15, sliding plate two; 16, sliding plate three; 17, chuck; 18, limit groove; 19, limit wheel; 20, transmission wheel; 21, transmission belt. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0032] Please refer to Figures 1-8 The application provides a technical solution:

[0033] Embodiment 1: the hub multi-point collaborative welding equipment with the anti-splashing structure as Figure 1 and Figure 2As shown, the top of the main body spin welding box 1 is provided with a multi-station rack 2, and an alternating feeding mechanism is arranged between the racks 2, which facilitates the assembly of the hub and the reinforcing rib and is also beneficial for discharging materials. According to the installation position of the reinforcing rib in the hub, multi-point collaborative welding is also performed, and the upper and lower four points are synchronously welded. In combination with the rotation of the rotary clamping assembly 13, the hub can rotate half a circle to complete the overall welding work.

[0034] For the rotary welding assembly 6 installed on both sides of the rack 2, Figure 5 As shown, the two sides of the rack 2 are symmetrically provided with a base plate one 4 and a base plate two 5. The base plate two 5 is located on the inner side, and the base plate one 4 is located on the outer side. The base plate two 5 installed below the top base plate one 4 is in sliding connection, and the position is limited by the abutment of the installed spring. The base plate two 5 above the bottom base plate one 4 is fixedly connected, and the rotary welding assembly 6 is uniformly installed on the base plate two 5.

[0035] The rotary welding assembly 6 is composed of a rotating mechanism, a power system, a control system, a clamping and fixing device, and a welding execution component. It combines laser welding technology with rotating workpieces. The workpiece surface material is instantaneously heated above the melting point by the high energy of the laser beam to achieve welding, which has the advantages of good processing stability, strong environmental protection, and low production cost.

[0036] The cutting surface formed by the three points in the middle of the hub is the symmetry plane, and the reinforcing rib is usually distributed on the single end face, as shown in Figure 8 Therefore, there is a difference in the movement distance of the upper and lower rotary welding assemblies 6. The transmission teeth 8 are movably connected through bearings in the middle of the placement plate, and the tooth rods 7 extending from the upper and lower base plate one 4 are located on both sides of the transmission teeth 8 and are in meshing connection with the transmission teeth 8. With the top transmission assembly 3 pushing the upper base plate one 4 to slide downward, the transmission teeth 8 are rotated through the single-sided tooth rod 7, and the lower base plate one 4 is synchronously moved. The two sides of the base plate two 5 move towards each other, the distance between the two sides of the rotary welding assembly 6 is reduced, and the top rotary welding assembly 6 reaches the welding position first. The base plate two 5 on the top is required to stop moving downward during the movement of the base plate one 4. For this purpose, a limiting cylinder 10 is installed on the top of the spin welding box 1, as shown in Figure 3 By obtaining the descending distance of the top base plate two 5, the height of the output end of the limiting cylinder 10 is adjusted first. When the base plate two 5 is in contact with the limiting cylinder 10 during the sliding of the upper base plate one 4 driven by the transmission assembly, the base plate one 4 continues to move downward while the base plate two 5 is stationary, which does not affect the upward movement of the base plate two 5 driven by the lower base plate one 4. Therefore, the asymmetric distribution state of the rotary welding assembly 6 on both sides of the reinforcing rib on the hub exists under the rotation of the transmission teeth 8, which is suitable for the storage position of the reinforcing rib on the hub and facilitates the subsequent precise welding operation.

[0037] After the subsequent two-side rotary welding assembly 6 is reset, the reset spring 9 installed on the surface of the upper pad plate two 5 and the pad plate one 4 controls the interval, and the subsequent wheel hub assembly rotates to complete the welding work of the upper and lower sides of the wheel hub. Since laser welding is adopted, the amount of welding slag is small, and the welding side of the rotary welding box 1 can be installed with a semi-enclosed shell under the protection of the protective gas. The protective gas blows away the small amount of metal vapor and splashes generated during the welding process, and directly falls to the bottom of the rotary welding box 1. At the same time, the upper and lower sides of the rotary welding assembly 6 are not perpendicular to the welding, so the laser contact between them is avoided. At the same time, the reinforcement rib is not deformed due to simultaneous welding on both sides, because the reinforcement rib is tightly pressed and fastened by the thickness of the reinforcing rib and the inner wall of the wheel hub.

[0038] The multi-point collaborative welding on the upper and lower sides can complete the high-speed welding of the reinforcement rib inside the wheel hub. Compared with the single-point welding method of completing each welding point one by one, the overall welding time is greatly shortened, which can significantly improve the production speed and efficiency in large-scale production. At the same time, when switching between different welding points in traditional welding, time is needed for positioning, adjusting welding parameters and other auxiliary operations. Multi-point collaborative welding can reduce these auxiliary times by reasonably planning the welding path and sequence, making the welding process more smooth and efficient.

[0039] In example 2, the corresponding wheel hub feeding and discharging equipment rate should be matched. Compared with the single-station semi-automatic feeding and discharging, the present application installs alternating assemblies in the rotary welding box 1, and at the same time, the double-station alternating assembly is installed with a rotary clamping assembly 13, which is convenient for fixing the reinforcement rib and the wheel hub.

[0040] Generally, the reinforcement rib is first fixed to the rotary clamping assembly 13, and the rotary clamping assembly 13 is selected according to the shape of the reinforcement rib. The whole rotary clamping assembly 13 is similar to a multi-jaw chuck structure, which is installed with a rotary knob on one side. The inner jaw is driven to slide on the disc surface by rotating the rotary knob, and the outer wall of the wheel hub reinforcement rib is clamped and fixed. At this time, the whole wheel hub is sleeved outside the reinforcement rib, and the special pressing mechanism is used for pressing and assembling. Then, the pre-fixed wheel hub assembly is moved to the welding area by the movable slide plate one 12 and the slide plate two 15 of the limiting plate group 11.

[0041] As shown in Figure 2 and Figure 4 , the limiting plate group 11 is installed on the inner wall of the bottom of the rotary welding box 1. The main body of the limiting plate group 11 is three plate pieces. As shown in Figure 6 , the left plate piece is slidably connected with the slide plate one 12. The top of the slide plate one 12 is fixed with the rotary clamping assembly 13 through bolts. At the same time, the rotary clamping assembly 13 penetrates through the slide plate one 12 and is rotatably connected with the abutting column 14. As shown in Figure 7 , the bottom of the abutting column 14 is further provided with two protrusions, and the abutting column 14 moves on the middle plate piece by sliding the slide plate one 12.

[0042] The slide plate two 15 is slidably connected to the middle plate, and the slide plate three 16 is also slidably connected to the vertical side of the slide plate two 15, one side of the slide plate three 16 is provided with a limiting wheel 19, the limiting wheel 19 abuts with the limiting groove 18 on the right side plate, the slide plate two 15 is slidably connected with the limiting groove 18, the height of the slide plate three 16 on the slide plate two 15 is controlled, and the height of the rotary clamping assembly 13 installed on the slide plate three 16 is controlled when the slide plate one 12 is connected, so that the two rotary assemblies are alternated;

[0043] Since the bottom of the two rotary clamping assemblies 13 is rotatably connected with the abutting column 14, the abutting column 14 is deflected to be dislocated, so as to avoid affecting the hub assembly alternation, and the abutting column 14 is installed to control the rotation of the rotary clamping assembly 13 on the slide plate one 12 and the slide plate three 16, and the swivel head 17 is movably connected to the middle plate of the limiting plate group 11, as shown in Figure 7 When the bottom abutting column 14 of the rotary clamping assembly 13 moves to the inside groove of the swivel head 17, the swivel head 17 rotates, and the whole rotary clamping assembly 13 rotates, that is, the multi-point welding of the hub assembly is realized;

[0044] In order to realize the alternating motion of the slide plate one 12 and the slide plate two 15, the transmission wheel 20 is movably connected to the inner wall of the bottom of the rotary welding box 1, the transmission belt 21 is installed on the transmission wheel 20, the transmission belt 21 is connected to the slide plate one 12 and the slide plate two 15 on both sides, the transmission belt 21 is reversely rotated to drive the slide plate one 12 and the slide plate two 15 to slide in the inside of the limiting plate group 11, and finally the two rotary clamping assemblies 13 are alternately fed, one side is welded at the same time, the other side is prepared or discharged, and the whole multi-point cooperative welding mechanism is matched in speed, and the efficient hub welding operation is completed.

[0045] The working principle of the present application is that the two laser welding guns are moved according to the position adjustment of the reinforcing rib on the hub pressing position, the reinforcing rib is fixed on the single rotary clamping assembly 13, the hub is sleeved, and the pressing mechanism is pressed and fixed, then the single hub assembly is moved to the bottom of the placing rack 2 through the rotation of the transmission belt 21.

[0046] The transmission assembly 3 pushes the top base plate 4 to move downward, the bottom base plate 4 is synchronously moved upward through the meshing of the gear rod 7 and the transmission gear 8, the bottom base plate 2 5 is lowered, the installed rotary welding assembly 6 starts to move and reaches the abutting position of the hub assembly, the control limiting cylinder 10 moves the top base plate 2 5 to intercept, and the rotary welding assembly 6 on the bottom base plate 2 5 continuously moves upward, the distance between the welding gun on the bottom rotary welding assembly 6 and the abutting position of the hub is observed, the positions of the rotary welding assemblies 6 on the upper and lower sides and the hub assembly are controlled, then the rotary head 17 is rotated to drive the rotary clamping assembly 13 to rotate, and the rotary welding assembly 6 works to weld the hub and the reinforcing rib.

[0047] After the welding is completed, the rotation of the transmission belt 21 moves the other rotary clamping assembly 13, the other rotary clamping assembly 13 carries the hub after the welding to move away from the bottom, and a new round of welding of the hub and the reinforcing rib is performed.

[0048] The above content is only an example and description of the structure of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace, as long as the structure of the application is not deviated or beyond the scope defined by the present claims, which shall belong to the protection scope of the present application.

[0049] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0050] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and limit the present application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A multi-point collaborative welding equipment for wheel hubs with an anti-splash structure, comprising a welding box and a placement rack, wherein the placement rack is symmetrically fixed to the top of the welding box and located on both sides of the channel by bolts, characterized in that, The two sides of the placement frame are symmetrically installed with pad 2 and pad 1 from bottom to top. The top of the placement frame is fixed with a transmission assembly by bolts. The output end of the transmission assembly passes through the placement frame and is fixed to the top pad 1. Pad 2 is installed on one side of pad 1. Top pad 1 is slidably connected to top pad 2 at its bottom, and a return spring is sleeved on the support column of top pad 2. Bottom pad 1 is fixedly connected to bottom pad 2 at its top. One side of the pads on both sides is symmetrically fixed with a toothed rod by welding, and one side of the placement frame is movably connected with a transmission tooth by a bearing. The toothed rods on both sides are respectively meshed with the transmission tooth. Rotary welding components are fixed to the top pad 2 and bottom pad 2 by bolts; The bottom inner wall of the rotary welding box is uniformly fixed by welding a limit plate assembly, the top of the limit plate assembly is slidably connected to a rotary clamping assembly, and the bottom of the rotary clamping assembly is rotatably connected to an abutment column. The top of the rotary welding box is fixedly connected to a limit cylinder by bolts. The limit cylinder is used to intercept the movement of the top pad plate 2. The main body of the limiting plate assembly consists of three plates. A sliding plate is slidably connected to the left plate. A rotating clamping assembly is fixed to the top of the sliding plate by bolts. One side of the rotating clamping assembly passes through the sliding plate and is rotatably connected to an abutment post. Two protrusions are also provided at the bottom of the abutment post, which slides on the middle plate along with the sliding plate. A second sliding plate is slidably connected to the middle plate, and a third sliding plate is slidably connected to the vertical side of the second sliding plate. A limit wheel is installed on one side of the third sliding plate, and a limit groove is opened on the right plate. The limit wheel abuts against the limit groove opened on the right plate. A rotating head is movably connected to the middle plate of the limiting plate assembly. A transmission wheel is movably connected to the bottom inner wall of the welding box and evenly located between the limiting plate assemblies. A transmission belt is sleeved on the transmission wheel. The first and second sliding plates are fixed to both sides of the transmission belt, respectively.

2. The multi-point collaborative welding equipment for wheel hubs with an anti-splash structure according to claim 1, characterized in that, Welding using this equipment includes: Adjust the position of the laser welding guns on both sides according to the position of the wheel hub pressing on the reinforcing rib. First, fix the reinforcing rib on the single-sided rotating clamping assembly, then put the wheel hub on and press it with the pressing mechanism. Then, drive the single wheel hub assembly to move to the bottom of the placement frame by rotating the transmission belt. The transmission assembly pushes the top pad 1 downward, and through the meshing of the rack and transmission gear, the bottom pad 1 moves upward synchronously. As the pad 1 moves, the two pads on both sides move towards each other. The installed rotary welding assembly begins to move and reaches the abutment position of the wheel hub assembly. The control limit cylinder moves the top pad 2 to intercept, while the rotary welding assembly on the bottom pad 2 continues to move upward. Observe the distance between the welding gun on the bottom rotary welding assembly and the abutment position of the wheel hub. After controlling the positions of the upper and lower rotary welding assemblies and the wheel hub assembly, the rotating head is used to drive the rotary clamping assembly to rotate, and the rotary welding assembly works to weld the wheel hub and the reinforcing rib. After welding is completed, the rotation of the transmission belt moves the rotating clamping assembly on the other side. The rotating clamping assembly on the other side carries the welded hub from the bottom and moves away to perform a new round of welding of the hub and reinforcing rib.

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