Tooling for welding an off-road vehicle front axle

Abstract

The application discloses a kind of off-road vehicle front axle welding tool equipment, it is related to welding tool technical field, including base, the top of the base is provided for the lifting seat of flat supporting front axle workpiece.Lifting seat is positioned to front axle workpiece by the positioning pin of two ends, and by traction assembly, front axle workpiece is carried to predetermined welding area by lifting seat, and front axle workpiece can be prevented from shaking by clamping mechanism Limit, when traction assembly is driven to move up on front axle workpiece and spring seat is abutted, adjustable alignment mechanism is used to adjust the position of spring seat and positioning, while the deflection angle of guide groove is used to drive movable seat to produce deflection adjustment, so that alignment mechanism can avoid the welding head of welding robot, and then the tool equipment can be conveniently connected to the lap position of off-road vehicle front axle and spring seat in different directions Continuous welding.

Description

Technical Field

[0001] This invention relates to the field of welding tooling technology, specifically to a tooling device for welding the front axle of an off-road vehicle. Background Technology

[0002] The front axle of off-road vehicles is mostly a steering drive axle, which is the core component that takes into account both steering and power transmission. Off-road vehicle front axles are divided into solid front axles and split front axles. Solid front axles have the characteristics of strong impact resistance and are often used in hardcore off-road vehicles. For off-road vehicles, the front axle and spring mounting bracket need to be fixed by welding.

[0003] According to a search, Chinese patent CN115008097B describes a docking mechanism that uses a fixing component inserted into the main pin hole of the front axle and a fixing plate to abut against it to align and fix the front axle, ensuring the accuracy of the docking between the support and the front axle. The docking component can adjust the distance between the supports, ensuring rapid positioning and docking between supports with different spacings and the front axle. Furthermore, the distance is adjusted by an electric slider of the feeding mechanism corresponding to an electromagnetic block, ensuring smooth feeding during processing, thereby improving processing efficiency and the practicality of the device.

[0004] In the above scheme, the electromagnet moves downward to align the support with the shaping part, then moves downward to dock with the front axle for welding via the articulated robot. After welding, the electromagnet moves upward away from the shaping part, and the second cylinder drives the shaping part to move to the right to reset for loading. Although the support can be positioned and docked to the designated position during this operation, different welding points will be generated when the support and the front axle overlap. This will greatly affect the movement space and movement path of the articulated robot's welding head, and thus unnecessary pauses will be made during welding to avoid interference with the movement path. Summary of the Invention

[0005] The purpose of this invention is to provide a tooling and equipment for welding the front axle of an off-road vehicle, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a tooling device for welding the front axle of an off-road vehicle, comprising a base, wherein a support seat for flatly supporting the front axle workpiece is provided above the base;

[0007] A traction assembly for transferring the front axle workpiece is provided between the lifting seat and the base. The traction assembly includes a slide that slides along both sides of the base. The upper part of the slide is connected to the bottom wall of the lifting seat through a parallelogram-shaped linkage frame. The lifting seat is provided with a clamping mechanism to limit the swaying of the front axle workpiece.

[0008] The base is also provided with an alignment mechanism for positioning the spring seat to be welded. The alignment mechanism consists of a horizontal bracket installed at the tail of the base, pressure plates symmetrically distributed on both sides of the horizontal bracket, and arc-shaped toothed rails fixed to both ends of the top of the horizontal bracket. A guide groove is rotatably connected to the center of the horizontal bracket.

[0009] When the spring seat and the top wall of the front axle workpiece are in contact but not welded, the alignment mechanism can make the guide groove vertically set to adapt to the initial docking state of the spring seat and the front axle workpiece, so that the spring seat has a stable pressing force of pressing downward. Furthermore, the alignment mechanism can make the guide groove rotate and swing to avoid the welding operation when positioning and pressing the spring seat.

[0010] Preferably, locating pins are symmetrically installed at both ends of the support seat, and the locating pins abut and limit the movement of the front axle workpiece on both sides to prevent lateral movement of the front axle workpiece.

[0011] Preferably, the two slides are connected by a fixed frame, and the slides contact the top walls on both sides of the base through internal rollers;

[0012] The base is equipped with sprockets on the front and rear sides, and a chain that is connected to the bottom of the fixed frame is wound between the two sets of sprockets. A dual-axis motor that drives the sprockets to rotate is installed on the side wall of the base near one of the sets of sprockets.

[0013] Preferably, the clamping mechanism includes a stop frame welded to the support seat, with a cylinder and a tilting frame hinged to the bottom and side of the stop frame respectively, and the output front end of the cylinder is hinged to the bottom end of the tilting frame.

[0014] Preferably, a limiting block is slidably connected on the guide groove, and two pull rods are connected to one side of the limiting block. A motor is installed on the guide groove, and a worm gear that penetrates the guide groove is connected to the output end of the motor. A bearing seat is installed on the side of the guide groove away from the motor, and a worm wheel that meshes with the worm gear is connected to the center of the bearing seat.

[0015] Preferably, the two ends of the central shaft of the worm gear are connected to lead screws with opposite thread directions, and the outer side of the lead screws is fitted with sleeves.

[0016] Preferably, a second motor is installed at the top of the guide groove, and the output end of the second motor is connected to a traveling toothed roller that meshes with the arc-shaped toothed rail.

[0017] Preferably, the bottom of the pressure plate has a positioning post integrally formed at the four corners, and the positioning post has a groove with equal included angles, and the groove is provided with an elastic buckle. The top of the pressure plate is equipped with a guide block, and a movable seat is connected to the guide block.

[0018] Preferably, the movable seat slides circumferentially along the central axis of the guide block via a slide rail at the bottom, and the pull rod and sleeve are respectively hinged to the movable seat.

[0019] Preferably, welding robots are provided on both sides of the base for welding the contact area between the front axle workpiece and the spring seat.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: the tooling equipment for welding the front axle of off-road vehicles limits the front axle workpiece by positioning pins at both ends of the lifting seat, and drives the lifting seat to move the front axle workpiece to the predetermined welding area by the traction component. The clamping mechanism can limit the sway of the front axle workpiece. When the traction component drives the front axle workpiece to move upward and abut against the spring seat, the adjustable alignment mechanism is used to adjust and position the spring seat. At the same time, the guide groove with deflectable angle drives the movable seat to produce a swing adjustment, so that the alignment mechanism can avoid the welding head of the welding robot, thereby facilitating the continuous welding of the overlap position of the front axle and the spring seat of the off-road vehicle in different directions. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0023] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the present invention;

[0024] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0025] Figure 5 This is a side view of the linkage between the traction component and the clamping mechanism of the present invention.

[0026] Figure 6 This is a three-dimensional structural schematic diagram of the alignment mechanism of the present invention;

[0027] Figure 7 This is a three-dimensional structural diagram of the guide block and movable seat of the present invention.

[0028] In the diagram: 1. Base; 2. Lifting seat; 201. Positioning pin; 3. Traction assembly; 301. Slide; 302. Linkage frame; 303. Fixing frame; 304. Chain; 305. Dual-axis motor; 4. Clamping mechanism; 401. Stop frame; 402. Cylinder; 403. Tilting frame; 5. Alignment mechanism; 501. Horizontal support; 5011. Guide groove; 5012. Limiting block; 5013. Pull rod; 5014. Motor 1; 5015. Worm gear; 5016. Lead screw; 5017. Sleeve; 5018. Motor 2; 5019. Traveling toothed roller; 502. Pressure plate; 5021. Positioning column; 5022. Elastic buckle; 5023. Guide block; 5024. Movable seat; 5025. Slide rail; 503. Arc-shaped toothed rail; 6. Welding robot. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-3 and Figure 5 The present invention provides a technical solution: a tooling equipment for welding the front axle of an off-road vehicle, including a base 1, a lifting seat 2 for flatly supporting the front axle workpiece is provided above the base 1, positioning pins 201 are symmetrically installed at both ends of the lifting seat 2, and the positioning pins 201 abut and limit along both sides of the front axle workpiece to prevent the lateral movement of the front axle workpiece, and a traction component 3 for transferring the front axle workpiece is provided between the lifting seat 2 and the base 1.

[0031] The traction assembly 3 includes a slide block 301 that slides along both sides of the base 1. The upper part of the slide block 301 is connected to the bottom wall of the support seat 2 through a parallelogram structure linkage 302. The two slide blocks 301 are connected by a fixing frame 303. The slide block 301 contacts the top walls of both sides of the base 1 through internal rollers.

[0032] The base 1 is equipped with sprockets on the front and rear sides, and a chain 304 that is connected to the bottom of the fixed frame 303 is wound between the two sets of sprockets. A dual-axis motor 305 that drives the sprockets to rotate is installed on the side wall of the base 1 near one of the sets of sprockets.

[0033] In this embodiment, the front axle workpiece is placed on the support seat 2, and the front axle workpiece is limited by the positioning pins 201 at both ends of the support seat 2. Then, the dual-axis motor 305 is started in both directions to drive one set of sprockets to rotate, thereby driving the chain 304 to pull the fixed frame 303 back and forth. This allows the support seat 2 to move along both sides of the base 1 through the slide 301 and the connecting rod frame 302. Since the slide 301 makes rolling contact with the top walls on both sides of the base 1 through the internal rollers, it can ensure that the front axle workpiece can be smoothly transferred during loading and unloading.

[0034] It should be noted that the connecting rod 302 has a parallelogram structure. When the lifting seat 2 is pressed on the connecting rod 302, the upper and lower parallel sides of the connecting rod 302 will be squeezed and folded together. At this time, the bottom wall of the lifting seat 2 and the top wall of the slide 301 are in the closest state, and the lifting seat 2 can carry the front axle workpiece smoothly to the predetermined welding area.

[0035] Please see Figures 1-3 and Figure 5 The lifting seat 2 is provided with a clamping mechanism 4 for preventing the front axle workpiece from swaying. The clamping mechanism 4 includes a stop frame 401 welded to the lifting seat 2. The bottom and side of the stop frame 401 are respectively hinged to a cylinder 402 and a tilting frame 403, and the output front end of the cylinder 402 is hinged to the bottom end of the tilting frame 403.

[0036] In this embodiment, when the traction component 3 moves the front axle workpiece restricted by the lifting seat 2 to the predetermined welding area, the cylinder 402 is activated to push one end of the flipping frame 403, causing the flipping frame 403 to flip forward on one side of the blocking frame 401. This allows the top of the flipping frame 403 to press against the front axle workpiece, ensuring that the front axle workpiece is securely clamped. Conversely, when the traction component 3 drives the lifting seat 2 to reset the welded front axle workpiece to the initial loading area, the cylinder 402 is activated to pull one end of the flipping frame 403, causing the flipping frame 403 to flip in the opposite direction on one side of the blocking frame 401. This allows the top of the flipping frame 403 to disengage from the front axle workpiece, facilitating the quick removal of the welded front axle.

[0037] It should be noted that: since the stop frame 401 is welded to the support seat 2, when the traction component 3 drives the support seat 2 and the clamping mechanism 4 to move towards the welding area, the tail of the stop frame 401 will first contact the tail of the base 1. At this time, the sliding block 301, which continues to move, will drive the stop frame 401 to gradually press against the tail of the base 1. Therefore, the stop frame 401, which cannot move horizontally, will push the connecting rod frame 302 in the opposite direction, causing the folded connecting rod frame 302 to rotate and unfold, so that the upper and lower sides of the connecting rod frame 302 can be separated. At this time, the connecting rod frame 302 can push the support seat 2 upward and make the front axle workpiece complete the upward lifting operation.

[0038] It should be noted that when the linkage 302 rotates from the folded state to the unfolded state, the inclined side of the linkage 302 will not rotate to an angle perpendicular to the upper and lower parallel sides, ensuring that the linkage 302 can stably support the lifting seat 2.

[0039] Please see Figure 1 and Figures 3-7 The base 1 is also provided with a positioning mechanism 5 for positioning the spring seat to be welded. The positioning mechanism 5 consists of a horizontal bracket 501 installed at the tail of the base 1, pressure plates 502 symmetrically distributed on both sides of the horizontal bracket 501, and arc-shaped toothed rails 503 fixed at both ends of the top of the horizontal bracket 501. A guide groove 5011 is rotatably connected to the center of the horizontal bracket 501.

[0040] A limit block 5012 is slidably connected to the guide groove 5011. Two pull rods 5013 are connected to one side of the limit block 5012. A motor 5014 is installed on the guide groove 5011. A worm gear that passes through the guide groove 5011 is connected to the output end of the motor 5014. A bearing seat is installed on the side of the guide groove 5011 away from the motor 5014. A worm wheel 5015 that meshes with the worm gear is connected to the center of the bearing seat. A lead screw 5016 with opposite thread directions is connected to both ends of the central shaft of the worm wheel 5015. A sleeve 5017 is sleeved on the outside of the lead screw 5016.

[0041] In this embodiment, by starting the motor 5014 to drive the worm to rotate forward and reverse, the worm and the worm wheel 5015 can mesh and transmit power in both directions. At this time, the worm wheel 5015 can drive the lead screw 5016 to rotate in both directions in the sleeve 5017, thereby driving the two sleeves 5017 to move closer to each other or further away from each other.

[0042] Please see Figure 3 and Figures 5-7 The bottom of the pressure plate 502 has four integrally formed positioning posts 5021. The positioning posts 5021 have grooves with equal included angles, and elastic buckles 5022 are provided in the grooves. The top of the pressure plate 502 is equipped with a guide block 5023, and a movable seat 5024 is connected to the guide block 5023. The movable seat 5024 slides circumferentially along the central axis of the guide block 5023 through the bottom slide rail 5025. The pull rod 5013 and the sleeve 5017 are respectively hinged to the movable seat 5024.

[0043] In this embodiment, the spring seat with holes at the four corners is connected to the positioning post 5021 at the bottom of the pressure plate 502, and the elastic buckle 5022 on the positioning post 5021 is locked in the hole of the spring seat. When the connecting rod frame 302 rotates and unfolds and drives the front axle workpiece on the lifting seat 2 to move upward, the top wall of the front axle workpiece will abut against the spring seat below the pressure plate 502. This allows the guide block 5023, which can slide and deflect with the slide rail 5025, to drive the spring seat below the pressure plate 502 to adapt to fit the top wall plane of the front axle workpiece, preventing the contact between the spring seat and the front axle workpiece from tilting. At this time, the traction component 3 will stop driving the lifting seat 2 to move.

[0044] The worm gear 5015 drives the screw 5016 to move forward or backward, causing the two sleeves 5017 to move closer or further apart. This allows the sleeves 5017 to pull or push the movable seat 5024. At this time, the limiting block 5012 at one end of the pull rod 5013 will slide back and forth along the guide groove 5011, thus driving the pressure plate 502 to change the position of the spring seat during lateral movement. This facilitates the standard adjustable positioning and docking of the spring seat and the front axle workpiece, which is convenient for subsequent positioning welding.

[0045] Please see Figure 3 and Figure 6 A second motor 5018 is installed at the top of the guide groove 5011, and the output end of the second motor 5018 is connected to a traveling toothed roller 5019 that meshes with the arc-shaped toothed rail 503.

[0046] In this embodiment, when the second motor 5018 is started to drive the walking toothed roller 5019 to mesh along the arc-shaped toothed track 503, the guide groove 5011 will drive the pull rod 5013 and the sleeve 5017 to perform reciprocating rotational swing, and at the same time the movable seat 5024, which rotates synchronously with the guide groove 5011, will deflect along the guide block 5023.

[0047] When the guide groove 5011 is in a vertically upward position, the linkage structure consisting of the guide groove 5011, the pull rod 5013, the lead screw 5016 and the sleeve 5017 can exert a downward squeezing effect on the movable seat 5024. When the spring seat and the top wall of the front axle workpiece are in contact but not welded, the alignment mechanism 5 can adapt to the initial docking state of the spring seat and the front axle workpiece, so that the spring seat has a stable downward squeezing effect and prevents docking offset.

[0048] When the initial welding is completed at the contact position between the spring seat and the top wall of the front axle workpiece, the motor 5018 drives the traveling toothed roller 5019 to change position along the arc-shaped toothed rail 503. The guide groove 5011 will drive the movable seat 5024 to rotate. At this time, it is convenient to avoid the approach of the welding equipment during welding, so that the relative position with the movable seat 5024 leaves enough welding space. This ensures that subsequent welding does not need to avoid the alignment mechanism 5 and make unnecessary stops, thus ensuring the continuity and smoothness of multi-directional welding.

[0049] Please see Figure 1 Welding robots 6 are installed on both sides of the base 1 to weld the joint between the front axle workpiece and the spring seat.

[0050] In this embodiment, since the width of the spring seat is generally greater than the width of the front axle workpiece, the two need to be reinforced by welding in two steps when they overlap. The welding robot 6 is started to drive the welding head to weld the two ends of the overlap of the spring seat and the front axle workpiece from above. At the same time, the welding robot 6 will weld the two sides of the overlap of the spring seat and the front axle workpiece from below. Thus, when the welding robot 6 is continuously welding, its welding head will flip on both sides of the front axle workpiece.

[0051] The alignment mechanism 5 allows the guide groove 5011 to rotate and swing, which can also avoid the welding operation when positioning and clamping the spring seat, thus avoiding the phenomenon of obstruction or incomplete welding. After the front axle is welded, the traction component 3 will run in reverse and first move the lifting seat 2 and the front axle workpiece downward. Then, the chain 304 can drive the fixed frame 303 to move the lifting seat 2 away from the horizontal bracket 501 and place the lifting seat 2 in the front end area of ​​the base 1, which is convenient for unloading the completed workpiece and for continuing to load. The contents not described in detail in this description are the prior art known to those skilled in the art.

Claims

1. A tooling device for welding the front axle of an off-road vehicle, comprising a base (1), wherein a support seat (2) for flatly supporting the front axle workpiece is provided above the base (1), characterized in that: A traction assembly (3) for transferring the front axle workpiece is provided between the lifting seat (2) and the base (1). The traction assembly (3) includes a slide (301) that slides along both sides of the base (1). The upper part of the slide (301) is connected to the bottom wall of the lifting seat (2) through a parallelogram structure linkage (302). The lifting seat (2) is provided with a clamping mechanism (4) for preventing the front axle workpiece from swaying. The base (1) is also provided with a positioning mechanism (5) for positioning the spring seat to be welded. The positioning mechanism (5) consists of a horizontal bracket (501) installed at the tail of the base (1), pressure plates (502) symmetrically distributed on both sides of the horizontal bracket (501), and arc-shaped toothed rails (503) fixed at both ends of the top of the horizontal bracket (501). A guide groove (5011) is rotatably connected to the center of the horizontal bracket (501). When the spring seat and the top wall of the front axle workpiece are in contact but not welded, the alignment mechanism (5) can make the guide groove (5011) vertically set to adapt to the initial docking state of the spring seat and the front axle workpiece, so that the spring seat has a stable pressing action of pressing downward. Furthermore, the alignment mechanism (5) can make the guide groove (5011) rotate and swing, which can also avoid the welding operation when positioning and pressing the spring seat.

2. The tooling equipment for welding the front axle of an off-road vehicle according to claim 1, characterized in that: The lifting seat (2) is symmetrically equipped with positioning pins (201) at both ends, and the positioning pins (201) abut and limit the movement of the front axle workpiece on both sides to prevent the lateral movement of the front axle workpiece.

3. The tooling equipment for welding the front axle of an off-road vehicle according to claim 1, characterized in that: The two slides (301) are connected by a fixed frame (303), and the slides (301) contact the top walls on both sides of the base (1) through internal rollers; The base (1) is equipped with sprockets on the front and rear sides, and a chain (304) that is connected to the bottom of the fixed frame (303) is wound between the two sets of sprockets. A dual-axis motor (305) that drives the sprockets to rotate is installed on the side wall of the base (1) near one of the sets of sprockets.

4. The tooling equipment for welding the front axle of an off-road vehicle according to claim 1, characterized in that: The clamping mechanism (4) includes a stop frame (401) welded to the support seat (2). The bottom and side of the stop frame (401) are respectively hinged with a cylinder (402) and a tilting frame (403), and the output front end of the cylinder (402) is hinged to the bottom end of the tilting frame (403).

5. The tooling equipment for welding the front axle of an off-road vehicle according to claim 1, characterized in that: A limiting block (5012) is slidably connected on the guide groove (5011). Two pull rods (5013) are connected to one side of the limiting block (5012). A motor (5014) is installed on the guide groove (5011). A worm gear that passes through the guide groove (5011) is connected to the output end of the motor (5014). A bearing seat is installed on the side of the guide groove (5011) away from the motor (5014), and a worm wheel (5015) that meshes with the worm gear is connected to the center of the bearing seat.

6. The tooling equipment for welding the front axle of an off-road vehicle according to claim 5, characterized in that: The worm gear (5015) has two ends of a central shaft connected to screws (5016) with opposite thread directions, and a sleeve (5017) is fitted on the outside of the screws (5016).

7. The tooling equipment for welding the front axle of an off-road vehicle according to claim 6, characterized in that: Motor 2 (5018) is installed at the top of the guide groove (5011), and the output end of motor 2 (5018) is connected to a traveling toothed roller (5019) that meshes with the arc-shaped toothed rail (503).

8. The tooling equipment for welding the front axle of an off-road vehicle according to claim 6, characterized in that: The bottom of the pressure plate (502) has a positioning post (5021) integrally formed at the four corners. The positioning post (5021) has a groove with equal included angles, and an elastic buckle (5022) is provided in the groove. The top of the pressure plate (502) is equipped with a guide block (5023), and a movable seat (5024) is connected to the guide block (5023).

9. The tooling equipment for welding the front axle of an off-road vehicle according to claim 8, characterized in that: The movable seat (5024) slides circumferentially along the central axis of the guide block (5023) via the bottom slide (5025), and the pull rod (5013) and the sleeve (5017) are respectively hinged to the movable seat (5024).

10. The tooling equipment for welding the front axle of an off-road vehicle according to claim 1, characterized in that: Welding robots (6) are provided on both sides of the base (1) for welding the contact area between the front axle workpiece and the spring seat.

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