Rim and spoke welding device

Abstract

The invention relates to the technical field of hub machining, in particular to a rim and spoke welding device which comprises a rotating mechanism, a workbench, an inner pressing mechanism, a horizontal pulling mechanism, an upper positioning seat, a lower positioning seat and two vertical guide plates, and the two vertical guide plates are fixedly mounted on a rotating seat of the rotating mechanism. When the automatic electric arc welding device is matched with a manipulator to carry out automatic electric arc welding, manual intervention is not needed during overturning, the upper positioning seat or the lower positioning seat above the hub automatically moves to the inserting rod during welding, no shielding exists above the hub, and the manipulator can carry out welding conveniently. In addition, during welding, the upper positioning seat and the lower positioning seat clamp the hub, then during overturning, due to positioning of the clamping ring, shaking is avoided in the overturning process, after overturning is completed, the hub is automatically positioned by the upper positioning seat or the lower positioning seat, and a mechanical arm can accurately conduct welding. And when the upper positioning seat and the lower positioning seat rotate, no obstacle exists, and collision cannot occur.

Description

Technical Field

[0001] The invention relates to the technical field of wheel hub processing, and in particular to a wheel rim and spoke welding device. Background Art

[0002] The rim and spokes are pressed together using a stamping machine, and then welded by a welding robot. The welding robot uses an automatic arc to melt the welding rod. Because the welding robot is pre-programmed, it must be positioned accurately each time to prevent arc extinction due to excessive distance during welding, and to avoid the welding rod from sticking to the wheel hub due to close distance. The prior art uses a manual flipping method after each weld to prepare for the next weld. However, due to the heavy wheel hub, the long flipping process is very labor-intensive. The prior art also provides a flipping mechanism to automatically flip the wheel hub, but this process requires first removing the wheel hub from the flipping mechanism, then flipping it over, and then placing it back in the welding position. If the flipping mechanism is not removed, the wheel hub will be placed above the flipping plate during welding, making it difficult for the robot to reach in, resulting in welding difficulties.

[0003] Therefore, it is necessary to design a rim and spoke welding device that can cooperate with a manipulator to perform automatic arc welding, does not require manual participation during flipping, and has no baffle above the hub during welding. Summary of the Invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a rim and spoke welding device that can cooperate with a robot to perform automatic arc welding, does not require manual participation during flipping, and has no baffle above the hub during welding.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: The present invention provides a rim and spoke welding device, comprising a rotating mechanism, a workbench, an internal pressure mechanism, a horizontal pulling mechanism, an upper positioning seat, a lower positioning seat and two vertical guide plates, the two vertical guide plates are fixedly mounted on the rotating seat of the rotating mechanism, each vertical guide plate is provided with two symmetrically distributed vertical guide grooves, the upper and lower vertical guide grooves are both extended outward to open side notches, two sliders are fixedly provided on both sides of the upper positioning seat and the lower positioning seat, the upper positioning seat and the lower positioning seat are connected by The sliders are respectively clamped in the upper and lower vertical guide grooves, and the sliders are inserted into the vertical guide grooves through the side notches. An elastic outward pushing mechanism is fixedly provided on the vertical guide plate to push the slider from the inside to the outside. The internal pressure mechanism is fixedly installed on the rotating mechanism. The internal pressure mechanism is used to squeeze the upper positioning seat and the lower positioning seat inward. A rotating avoidance hole is provided on the workbench for the upper positioning seat and the lower positioning seat to switch their relative positions. When the internal pressure mechanism is not squeezed, the elastic outward pushing mechanism pushes the slider to fit the end of the vertical guide groove, and the upper positioning seat or the lower positioning seat is clamped with the horizontal pulling mechanism.

[0006] Preferably, two symmetrically arranged rotating shafts are provided on the rotating mechanism, and the internal pressure mechanism includes two internal pressure devices respectively installed on the rotating shafts, each internal pressure device includes a disc, a horizontal pushing mechanism and an elastic pusher, the end of the rotating shaft is fixedly connected to the vertical guide plate, the outer edge of the end of the rotating shaft is a spline structure, and a spline hole slidably connected to the spline is opened in the middle of the disc, and two symmetrical groups of triangular blocks are fixedly provided on the disc, and the inner inclined surfaces of the upper and lower groups of triangular blocks are in contact with the side surfaces of the upper positioning seat and the lower positioning seat respectively, and the horizontal pushing mechanism is fixedly installed on the workbench, and the pushing plate on the horizontal pushing mechanism is used to push the disc inward, and the elastic pusher is fixedly installed on the vertical guide plate, and the elastic pusher is used to push the internal pressure mechanism away from the vertical guide plate. When the horizontal pushing mechanism pushes the internal pressure mechanism to conflict with the vertical guide plate, the sliders on the upper positioning seat and the lower positioning seat conflict with the lifting end of the elastic external pushing mechanism, so that the elastic external pushing mechanism is compressed to the limit position.

[0007] Preferably, a synchronous support mechanism is also included, which includes two symmetrically arranged support tubes and two rotating rods. The two support tubes can be installed on the workbench in a horizontally sliding manner through a slide seat and a slide rail, and the middle part of the rotating rod can be rotatably installed on the workbench. Each support tube is fixedly provided with a sliding shaft 1, and sliding shaft 2 is fixedly provided on both sides of the push plate. Waist-shaped grooves for sliding shaft 1 and sliding shaft 2 to be clamped are respectively provided on both sides of the rotating rod.

[0008] Preferably, the horizontal pulling mechanism includes two insertion rods, an electric push rod and a connecting plate fixedly installed on the working end of the electric push rod. Two card shafts are fixedly provided at the bottom of the connecting plate. The upper positioning seat and the lower positioning seat are provided with card holes for the card shafts to be inserted. The two insertion rods are horizontally fixedly installed on the workbench. The ends of the insertion rods are located outside the circumferential contour. The upper positioning seat and the lower positioning seat are provided with insertion holes for the insertion rods to be inserted. The vertical guide groove is extended outward along the side notch and has two extension strips. Before the insertion hole is completely separated from the insertion rod, the slider is inserted between the two extension strips. When the lifting plate is compressed to the limit position by the slider, the card shaft is pulled out of the card hole.

[0009] Preferably, each elastic outward pushing mechanism includes a lifting plate, a retaining ring, a spring and a guide column. The guide column can be installed on the vertical guide plate so as to slide along the length direction of the vertical guide groove. The lifting plate is fixedly installed on the end of the guide column. The retaining ring is fixedly installed on the outer edge of the guide column. The spring is used to provide an elastic force to the retaining ring close to the slider.

[0010] Preferably, the rotating mechanism includes two unilateral pushing mechanisms, and the two rotating shafts are respectively connected to the two unilateral pushing mechanisms. Each unilateral pushing mechanism includes a gear, a rack and an electric push rod. The gear is fixedly mounted on the end of the rotating shaft, and the rotating shaft can be rotatably mounted on the workbench through the shaft seat. The rack is meshed with the gear, and the rack can be horizontally slidably mounted on the workbench. The electric push rod is fixedly mounted on the workbench, and the electric push rod is fixedly connected to the end of the rack.

[0011] Preferably, the horizontal pushing mechanism also includes an electric push rod 2, which is fixedly mounted on the workbench, a pushing plate fixedly connected to the working end of the electric push rod 2, extended side plates are provided on both sides of the pushing plate, and the sliding shaft 2 is fixedly connected to the extended side plates.

[0012] Preferably, the elastic pusher includes a second spring, a second guide column and a guide plate. The guide plate is fixedly mounted on the vertical guide plate. The second guide column is slidably connected to the guide plate. A circular push plate that contacts the disc is provided at the end of the second guide column. The second spring is used to apply an elastic force to the circular push plate close to the disc.

[0013] Preferably, the rotating rod is a curved structure.

[0014] Preferably, both the upper positioning seat and the lower positioning seat are provided with a snap ring, the two snap rings have the same thickness, and both snap rings are provided with a bevel that fits the contour of the hub.

[0015] The beneficial effects of the present invention are that the rim and spoke welding device can cooperate with a robot to perform automatic arc welding, and does not require manual intervention during flipping. During welding, the upper positioning seat or the lower positioning seat above the wheel hub automatically moves to the insertion rod, and there is no obstruction above the wheel hub, which is convenient for the robot to perform welding.

[0016] During welding, the upper and lower positioning seats clamp the wheel hub, and then during flipping, due to the positioning of the retaining ring, the flipping process is smooth. After the flipping is completed, the wheel hub is automatically positioned by the upper or lower positioning seat, and the robot can perform welding accurately.

[0017] When the upper positioning seat or the lower positioning seat moves horizontally, the elastic outward pushing mechanism pushes it to automatically engage with the horizontal pulling mechanism. When the upper positioning seat or the lower positioning seat rotates, there is no obstacle and no collision occurs.

[0018] Moreover, no matter whether the upper positioning seat or the lower positioning seat moves to the lower position, it can be clamped and positioned by the synchronous support mechanism, avoiding the unstable shaking structure caused by the design of the rotating structure, and ensuring that the wheel hub can be stable and not move during welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the three-dimensional structure of the present invention Figure 1 .

[0021] Figure 2 Schematic diagram of the three-dimensional structure of the present invention Figure 2 .

[0022] Figure 3 It is a partial front view of the present invention.

[0023] Figure 4 It is a side view of the clamping posture of the present invention.

[0024] Figure 5 Schematic diagram of the elastic extrapolation mechanism and the vertical guide plate.

[0025] Figure 6 Schematic diagram of the separation state of the rotating shaft and the disk.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the synchronous support mechanism.

[0027] Figure 8 A top view of the support tube and the splint.

[0028] Figure 9 It is a schematic diagram of the three-dimensional structure of the upper positioning seat.

[0029] Figure 10It is a schematic diagram of the partial three-dimensional structure of the horizontal pulling mechanism.

[0030] Figure 11 It is a schematic diagram of the three-dimensional structure of the rotating mechanism.

[0031] Figure 12 It is a schematic diagram of the three-dimensional structure of the internal pressure mechanism.

[0032] Figure 13 This is a schematic diagram of the three-dimensional structure of the upper positioning seat from another perspective.

[0033] Explanation of reference numerals: 1, rotating mechanism; 1a, rotating shaft; 1b, gear; 1c, rack; 1d, electric push rod 1; 2, workbench; 2a, rotation avoidance hole; 3, internal pressure mechanism; 3a, disk; 3b, triangular block; 3c, horizontal pushing mechanism; 3c1, pushing plate; 3c2, electric push rod 2; 3d, elastic pusher; 3d1, spring 2; 3d2, guide column 2; 3d3, guide plate; 4, horizontal pulling mechanism; 4a, insertion rod; 4b, electric push rod; 4c, Clamping shaft; 4d, jack; 4e, clamping hole; 4f, connecting plate; 5, vertical guide plate; 5a, vertical guide groove; 5a1, side notch; 5b, extension bar; 6, synchronous support mechanism; 6a, support tube; 6b, splint; 6c, rotating rod; 6d, sliding shaft one; 6e, sliding shaft two; 7, elastic outward pushing mechanism; 7a, lifting plate; 7b, retaining ring; 7c, spring one; 7d, guide column one; 10, wheel hub; 11, upper positioning seat; 12, lower positioning seat; 13, slider; 14, clamping ring. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Embodiment: The present invention provides a rim spoke welding device, such as Figure 1-13As shown, it includes a rotating mechanism 1, a workbench 2, an internal pressure mechanism 3, a horizontal pulling mechanism 4, an upper positioning seat 11, a lower positioning seat 12 and two vertical guide plates 5. The two vertical guide plates 5 are fixedly mounted on the rotating seat of the rotating mechanism 1. Each vertical guide plate 5 is provided with two symmetrically distributed vertical guide grooves 5a. The upper and lower vertical guide grooves 5a are extended outward to form side notches 5a1. Two sliders 13 are fixedly provided on both sides of the upper positioning seat 11 and the lower positioning seat 12. The upper positioning seat 11 and the lower positioning seat 12 are respectively clamped in the upper and lower vertical guide grooves 5a through the sliders 13. 13 passes through the side notch 5a1 and is inserted into the vertical guide groove 5a. An elastic outward pushing mechanism 7 is fixedly provided on the vertical guide plate 5 to push the slider 13 from the inside to the outside. The internal pressure mechanism 3 is fixedly installed on the rotating mechanism 1. The internal pressure mechanism 3 is used to squeeze the upper positioning seat 11 and the lower positioning seat 12 inward. The workbench 2 is provided with a rotation avoidance hole 2a for the upper positioning seat 11 and the lower positioning seat 12 to switch their relative positions. When the internal pressure mechanism 3 is not squeezed, the elastic outward pushing mechanism 7 pushes the slider 13 to fit the end of the vertical guide groove 5a, and the upper positioning seat 11 or the lower positioning seat 12 is engaged with the horizontal pulling mechanism 4. Since the rotating mechanism 1 can rotate and change the working position, when the upper positioning seat 11 or the lower positioning seat 12 rotates to the upper position, the upper positioning seat 11 or the lower positioning seat 12 is engaged with the horizontal pulling mechanism 4. Figure 1 This is the posture of the upper positioning seat 11 when it is transported from the horizontal pulling mechanism 4 to the vertical guide plate 5 . Initially, the upper positioning seat 11 is not in this position, and the upper positioning seat 11 is located on the horizontal pulling mechanism 4 .

[0036] When the top of the rim and the spokes are welded, the upper positioning seat 11 is transported to the upper position by the horizontal pulling mechanism 4. Figure 1 In the state shown, after the transport is completed, the working end of the horizontal pulling mechanism 4 is retracted. Then, the internal pressure mechanism 3 simultaneously presses the upper positioning seat 11 and the lower positioning seat 12 inward, so that the slider 13 slides inward along the vertical guide groove 5a (to the center of the disc 3a).

[0037] After the internal pressure mechanism 3 fixes the upper and lower positioning seats 11 and 12, the rotating mechanism 1 drives them to rotate, so that the upper and lower positioning seats 11 and 12 switch positions. The lower positioning seat 12 rotates to the upper position, and the wheel hub 10 also achieves a flip in position.

[0038] Before the internal pressure mechanism 3 is separated, the working end of the horizontal pulling mechanism 4 is extended. After the internal pressure mechanism 3 is separated from the upper positioning seat 11 and the lower positioning seat 12, the slider 13 on the lower positioning seat 12 is automatically lifted upward, so that the lower positioning seat 12 is automatically engaged with the horizontal pulling mechanism 4. Then, the working end of the horizontal pulling mechanism 4 is pulled back along the direction of F3, which can drive the lower positioning seat 12 to move to the Figure 2The rim and the bottom of the spoke can be welded by the welding robot using an automatic arc.

[0039] By the above method, the top and bottom of the rim and the spoke can be welded. When flipping, the wheel hub 10 is clamped and then flipped. The upper positioning seat 11 can be stored before flipping. After flipping, the lower positioning seat 12 above the wheel hub 10 can be removed horizontally to ensure that the top is empty during drop welding, which is convenient for the welding process of the welding manipulator. Since both the upper positioning seat 11 and the lower positioning seat 12 are provided with a clamping ring that is positioned and connected to the wheel hub 10, the need to use the internal pressure mechanism 3 to push and clamp the wheel hub 10 can be avoided, so as to ensure that the upper positioning seat 11 and the lower positioning seat 12 are clamped to the wheel hub 10, and avoid shaking of the wheel hub 10 when flipping.

[0040] When the horizontal pulling mechanism 4 performs horizontal pulling, it will move along the direction of F3, and when the internal pressure mechanism 3 releases the clamping of the upper positioning seat 11 and the lower positioning seat 12, the two discs 3a will move along the directions of F1 and F2 respectively.

[0041] The rotating mechanism 1 is provided with two symmetrical rotating shafts 1a, the internal pressure mechanism 3 includes two internal pressure devices respectively mounted on the rotating shaft 1a, each internal pressure device includes a disc 3a, a horizontal pushing mechanism 3c and an elastic pusher 3d, the end of the rotating shaft 1a is fixedly connected to the vertical guide plate 5, the outer edge of the end of the rotating shaft 1a is a spline structure, and a spline hole is opened in the middle of the disc 3a for sliding connection with the spline. Two symmetrical sets of triangular blocks 3b are fixed on the disc 3a, and the inner sides of the upper and lower sets of triangular blocks 3b are fixedly provided with the inner sides of the upper and lower sets of triangular blocks 3b. The inclined surfaces are in contact with the side surfaces of the upper positioning seat 11 and the lower positioning seat 12 respectively. The horizontal pushing mechanism 3c is fixedly mounted on the workbench 2. The pushing plate 3c1 on the horizontal pushing mechanism 3c is used to push the disc 3a inward. The elastic pusher 3d is fixedly mounted on the vertical guide plate 5. The elastic pusher 3d is used to push the internal pressure mechanism 3 away from the vertical guide plate 5. First, the horizontal pushing mechanism 3c works, and the pushing plate 3c1 will push the disc 3a toward the vertical guide plate 5, and at the same time, it will also drive the triangular block 3b to move. The upper and lower sets of triangular blocks 3b will simultaneously push the upper positioning seat 11 and the lower positioning seat 12 to slide along the vertical guide groove 5a, and at the same time will compress the elastic external pushing mechanism 7. When the horizontal pushing mechanism 3c pushes the internal pressure mechanism 3 to collide with the vertical guide plate 5, the sliders 13 on the upper positioning seat 11 and the lower positioning seat 12 collide with the lifting end of the elastic external pushing mechanism 7, causing the elastic external pushing mechanism 7 to be compressed to the limit position, that is, presenting Figure 5 The state shown is that in this state, the upper positioning seat 11 and the lower positioning seat 12 are fixed, and then the rotating shaft 1a is controlled to rotate by the rotating mechanism 1, so that the disc 3a and the vertical guide plate 5 connected to the rotating shaft 1a rotate together, and finally the wheel hub 10 is flipped.

[0042] During the rotation, since the disc 3a is a circular structure, the pushing plate 3c1 can always keep in contact with the disc 3a, thereby preventing the disc 3a from being pushed back by the elastic pusher 3d during the rotation.

[0043] After the rotation is completed, the horizontal pushing mechanism 3c controls the pushing plate 3c1 to be reset and retracted, the disc 3a will be pushed back by the elastic pusher 3d, and the upper positioning seat 11 and the lower positioning seat 12 will be pushed back to the upper and lower sides by the elastic outward pushing mechanism 7.

[0044] The above-described method pushes the upper and lower positioning seats 11 and 12 inward in a synchronous manner, rather than pressing the wheel hub 10 downward from above. This method would require adjusting the height of the wheel hub 10 after the pressing mechanism rotates. Furthermore, the structure of the internal pressure mechanism 3 can reduce the overall rotation profile, reducing the size of the rotation avoidance hole 2a. This also reduces the centrifugal force experienced during rotation.

[0045] It also includes a synchronous support mechanism 6, which includes two symmetrically arranged support tubes 6a and two rotating rods 6c. The two support tubes 6a can be installed on the workbench 2 in a horizontally sliding manner through slides and slide rails. When the internal pressure mechanism 3 releases the clamping of the upper positioning seat 11 and the lower positioning seat 12, the bottom of the upper positioning seat 11 or the lower positioning seat 12 located below fits with the top of the support tube 6a, and is supported by the two support tubes 6a to avoid shaking during welding. The middle part of the rotating rod 6c can be rotatably installed on the workbench 2. A sliding shaft 1 6d is fixedly provided on each support tube 6a, and a sliding shaft 2 6e is fixedly provided on both sides of the push plate 3c1. A waist-shaped groove for the sliding shaft 1 6d and the sliding shaft 2 6e to be clamped is respectively provided on both sides of the rotating rod 6c. Figure 3As shown, S1 is the maximum rotation profile, at which point the support tube 6a is positioned so as not to contact the upper and lower positioning seats 11 and 12 during rotation. After rotation, and while the push plate 3c1 is being reset, the upper and lower positioning seats 11 and 12 located below will move downward. Simultaneously, the push plate 3c1 will rotate the rotating rod 6c via the side slide shaft 2 6e, causing the rotating rod 6c to pull the support tube 6a inward via the slide shaft 1 6d. The support tube 6a will support the bottom of the upper and lower positioning seats 11 and 12, and after the push plate 3c1 is reset, the two clamping plates 6b will clamp the two sides of the upper and lower positioning seats 11 and 12, preventing the upper and lower positioning seats 11 and 12 from being pushed sideways during welding due to the side notch 5a1. When the upper positioning seat 11 or the lower positioning seat 12 is descending, the support tube 6a moves. If the support tube 6a is pushed inward after the descent is completed, the friction between the top of the support tube 6a and it will cause it to slide sideways directly, and there is a probability that it will slide out of the side notch 5a1.

[0046] The horizontal pulling mechanism 4 includes two insertion rods 4a, an electric push rod 4b and a connecting plate 4f fixedly installed on the working end of the electric push rod 4b. Two card shafts 4c are fixedly provided at the bottom of the connecting plate 4f. The upper positioning seat 11 and the lower positioning seat 12 are provided with card holes 4e for the card shafts 4c to be inserted. The two insertion rods 4a are horizontally fixedly installed on the workbench 2. The ends of the insertion rods 4a are located outside the circumferential contour of S1. The upper positioning seat 11 and the lower positioning seat 12 are provided with insertion holes 4d for the insertion rods 4a to be inserted. The vertical guide groove 5a is extended outward along the side notch 5a1 and is provided with two extension strips 5b. Before the insertion hole 4d is completely separated from the insertion rod 4a, the slider 13 is inserted between the two extension strips 5b. When the lifting plate 7a is compressed to the limit position by the slider 13, the card shaft 4c is pulled out from the card hole 4e. The clamping shaft 4c is horizontally pushed by the electric push rod 4b toward the rotating mechanism 1, which will cause the upper positioning seat 11 or the lower positioning seat 12 connected to the insertion rod 4a to be pushed horizontally. Before the socket 4d is completely separated from the insertion rod 4a, the slider 13 is inserted between the two extension bars 5b. This ensures that the end of the insertion rod 4a will not be within S1. Because the upper positioning seat 11 and the lower positioning seat 12 have been separated from it in advance, the last distance is separated by the extension bar 5b. S1 is determined by the width of the upper positioning seat 11 and the lower positioning seat 12, so that there will be no contact with them during the subsequent rotation process. After the electric push rod 4b completes the pushing, the internal pressure mechanism 3 presses the upper positioning seat 11 and the lower positioning seat 12 inward, so that the clamping shaft 4c is withdrawn from the clamping hole 4e, achieving automatic separation, and the working end of the electric push rod 4b can now be retracted. When the internal pressure mechanism 3 releases the upper positioning seat 11 and the lower positioning seat 12, the card hole 4e will automatically be locked into the card shaft 4c, so that the electric push rod 4b can automatically pull out the upper positioning seat 11 or the lower positioning seat 12 located above horizontally, making it convenient for the subsequent welding robot to use automatic arc welding.

[0047] Each elastic outward-pushing mechanism 7 comprises a lifting plate 7a, a retaining ring 7b, a spring 7c, and a guide post 7d. The guide post 7d is mounted on the vertical guide plate 5 so as to slide along the length of the vertical guide groove 5a. The lifting plate 7a is fixedly mounted to the end of the guide post 7d, and the retaining ring 7b is fixedly mounted to the outer edge of the guide post 7d. The spring 7c is used to provide an elastic force to the retaining ring 7b to move it toward the slider 13. When the slider 13 slides inward along the vertical guide groove 5a, the spring 7c is compressed. After the internal pressure mechanism 3 is reset, the lifting plate 7a pushes the slider 13 outward to contact the top of the vertical guide groove 5a.

[0048] The rotating mechanism 1 includes two unilateral pushing mechanisms. The two rotating shafts 1a are respectively connected to the two unilateral pushing mechanisms. Each unilateral pushing mechanism includes a gear 1b, a rack 1c and an electric push rod 1d. The gear 1b is fixedly installed at the end of the rotating shaft 1a. The rotating shaft 1a can be rotatably installed on the workbench 2 through the shaft seat. The rack 1c is meshed with the gear 1b. The rack 1c can be horizontally slidably installed on the workbench 2. The electric push rod 1d is fixedly installed on the workbench 2. The electric push rod 1d is fixedly connected to the end of the rack 1c. By controlling the working ends of the two electric push rods 1d to retract or extend, the rack 1c will push the gear 1b to rotate, so that the gear 1b can drive the rotating shaft 1a to rotate. The horizontal sliding of the rack 1c is achieved by installing a slide and a slide rail at the bottom of the rack 1c. After the rotating shaft 1a rotates, it will simultaneously drive the vertical guide plate 5 to rotate. The horizontal push mechanism 3c also includes a second electric push rod 3c2, which is fixedly mounted on the workbench 2. A push plate 3c1 is fixedly connected to the working end of the second electric push rod 3c2. Extended side plates are provided on either side of the push plate 3c1, and the second sliding shaft 6e is fixedly connected to the extended side plates. The extended side plates enable the second sliding shaft 6e and the first sliding shaft 6d to form a diagonal configuration. When the telescopic end of the second electric push rod 3c2 pulls the push plate 3c1 backward and retracts it, the support tube 6a is able to move inward.

[0049] Elastic pusher 3d comprises a second spring 3d1, a second guide post 3d2, and a guide plate 3d3. Guide plate 3d3 is fixedly mounted on vertical guide plate 5. Guide post 3d2 is slidably connected to guide plate 3d3. A circular push plate is provided at the end of guide post 3d2, which contacts disk 3a. Spring 3d1 applies an elastic force to the push plate, which moves it toward disk 3a. The elastic force of spring 3d1 enables guide post 3d2 to push disk 3a back into position when horizontal pusher 3c is reset.

[0050] The rotating rod 6c is a curved structure. The slope of the curvature of the rotating rod 6c is determined by the transmission ratio of the backward movement distance of the push plate 3c1 and the inward movement distance of the support tube 6a. This ensures that when the triangular block 3b is completely separated from the upper positioning seat 11 or the lower positioning seat 12, that is, the upper positioning seat 11 and the lower positioning seat 12 move to their final positions in the upper and lower directions, the clamping plate 6b needs to clamp the upper positioning seat 11 or the lower positioning seat 12 located below.

[0051] A snap ring 14 is provided on both the upper and lower locating seats 11, 12. Both snap rings 14 have the same thickness and are provided with a beveled edge that conforms to the contour of the wheel hub 10. Due to their identical thickness, the separation distance between the upper and lower locating seats 11, 12 is the same. While the contours of the upper and lower sides of the wheel hub 10 are certainly different, this can be accommodated by changing the slope. Furthermore, only the snap ring 14 needs to be replaced for different wheel hubs 10, as the width of the wheel hub is generally a standard size and must be consistent with the tire.

[0052] When using, Figure 1 At the beginning, the upper positioning seat 11 is located on the insertion rod 4a, and the welding is performed for the first time by the robot. After the top of the rim and the spoke are welded, the upper positioning seat 11 is transported to the upper position by the horizontal pulling mechanism 4. Figure 1 In the state shown, after the transport is completed, the working end of the horizontal pulling mechanism 4 is retracted. Then the upper positioning seat 11 and the lower positioning seat 12 are squeezed inwardly by the internal pressure mechanism 3, so that the slider 13 slides along the vertical guide groove 5a toward the center of the inner disk 3a.

[0053] After the internal pressure mechanism 3 fixes the upper and lower positioning seats 11 and 12, the rotating mechanism 1 drives them to rotate, so that the upper and lower positioning seats 11 and 12 switch positions. The lower positioning seat 12 rotates to the upper position, and the wheel hub 10 also achieves a flip in position.

[0054] Before the internal pressure mechanism 3 is separated, the working end of the horizontal pulling mechanism 4 is extended. After the internal pressure mechanism 3 is separated from the upper positioning seat 11 and the lower positioning seat 12, the slider 13 on the lower positioning seat 12 is automatically lifted upward, so that the lower positioning seat 12 is automatically engaged with the horizontal pulling mechanism 4. Then, the working end of the horizontal pulling mechanism 4 is pulled back along the direction of F3, which can drive the lower positioning seat 12 to move to the Figure 2 The rim and the bottom of the spoke can now be welded by the welding robot.

[0055] The rim and spoke welding device can cooperate with a manipulator to perform automatic arc welding, and does not require manual intervention during flipping. During welding, the upper positioning seat 11 or the lower positioning seat 12 above the hub automatically moves to the insertion rod 4a, and there is no obstruction above the hub 10, which is convenient for the manipulator to perform welding.

[0056] During welding, the upper positioning seat 11 and the lower positioning seat 12 clamp the wheel hub 10. Then, during flipping, due to the positioning of the retaining ring 14, the flipping process is smooth. After the flipping is completed, the wheel hub 10 is automatically positioned by the upper positioning seat 11 or the lower positioning seat 12, and the robot can perform welding accurately.

[0057] When the upper positioning seat 11 or the lower positioning seat 12 moves horizontally, it is automatically connected with the horizontal pulling mechanism 4 by the elastic outward pushing mechanism 7. And when the upper positioning seat 11 and the lower positioning seat 12 rotate, there is no obstacle and no collision occurs.

[0058] Moreover, no matter whether the upper positioning seat 11 or the lower positioning seat 12 moves to the lower position, it can be clamped and positioned by the synchronous support mechanism 6, avoiding the unstable shaking structure caused by the design of the rotating structure, and ensuring that the wheel hub 10 can be stable and not move during welding.

[0059] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A rim and spoke welding device, characterized in that: The invention comprises a rotating mechanism (1), a workbench (2), an internal pressure mechanism (3), a horizontal pulling mechanism (4), an upper positioning seat (11), a lower positioning seat (12) and two vertical guide plates (5), wherein the two vertical guide plates (5) are fixedly mounted on the rotating seat of the rotating mechanism (1), and each vertical guide plate (5) is provided with two symmetrically distributed vertical guide grooves (5a), and the upper and lower vertical guide grooves (5a) are both extended outward to form side notches (5a1), and two sliders (13) are fixedly provided on both sides of the upper positioning seat (11) and the lower positioning seat (12), and the upper positioning seat (11) and the lower positioning seat (12) are respectively clamped in the upper and lower vertical guide grooves (5a) through the sliders (13), and the sliders (13) The vertical guide plate (5) is fixed with an elastic push mechanism (7) for pushing the slider (13) from the inside to the outside through the side notch (5a1). The internal pressure mechanism (3) is fixedly installed on the rotating mechanism (1). The internal pressure mechanism (3) is used to squeeze the upper positioning seat (11) and the lower positioning seat (12) inward. The workbench (2) is provided with a rotation avoidance hole (2a) for the upper positioning seat (11) and the lower positioning seat (12) to switch their relative positions. Before the internal pressure mechanism (3) is squeezed, the elastic push mechanism (7) pushes the slider (13) to fit the end of the vertical guide plate (5a), and the upper positioning seat (11) or the lower positioning seat (12) is clamped with the horizontal pulling mechanism (4).

2. A rim and spoke welding device according to claim 1, characterized in that: The rotating mechanism (1) is provided with two symmetrically arranged rotating shafts (1a), the internal pressure mechanism (3) includes two internal pressure devices respectively mounted on the rotating shafts (1a), each internal pressure device includes a disk (3a), a horizontal pushing mechanism (3c) and an elastic pusher (3d), the end of the rotating shaft (1a) is fixedly connected to the vertical guide plate (5), the outer edge of the end of the rotating shaft (1a) is a spline structure, the middle of the disk (3a) is provided with a spline hole connected to the spline in a sliding manner, and two symmetrical groups of triangular blocks (3b) are fixedly provided on the disk (3a), the inner side inclined surfaces of the upper and lower groups of triangular blocks (3b) are respectively connected to the upper positioning seat (11) and the lower positioning seat (11). The horizontal pushing mechanism (3c) is fixedly mounted on the workbench (2), and the pushing plate (3c1) on the horizontal pushing mechanism (3c) is used to push the disc (3a) inward. The elastic pusher (3d) is fixedly mounted on the vertical guide plate (5), and the elastic pusher (3d) is used to push the internal pressure mechanism (3) away from the vertical guide plate (5). When the horizontal pushing mechanism (3c) pushes the internal pressure mechanism (3) to contact the vertical guide plate (5), the slider (13) on the upper positioning seat (11) and the lower positioning seat (12) contacts the jacking end of the elastic pushing mechanism (7), so that the elastic pushing mechanism (7) is compressed to the limit position.

3. A rim and spoke welding device according to claim 2, characterized in that: The invention also includes a synchronous support mechanism (6), which includes two symmetrically arranged support tubes (6a) and two rotating rods (6c). The two support tubes (6a) can be installed on the workbench (2) in a horizontally sliding manner through a slide seat and a slide rail. The middle part of the rotating rod (6c) can be installed on the workbench (2) in a rotatable manner. Each support tube (6a) is fixedly provided with a sliding shaft 1 (6d). Both sides of the push plate (3c1) are fixedly provided with a sliding shaft 2 (6e). Both sides of the rotating rod (6c) are respectively provided with waist-shaped grooves for the sliding shaft 1 (6d) and the sliding shaft 2 (6e) to be clamped.

4. A rim and spoke welding device according to claim 3, characterized in that: The horizontal pulling mechanism (4) includes two insertion rods (4a), an electric push rod (4b) and a connecting plate (4f) fixedly mounted on the working end of the electric push rod (4b). Two clamping shafts (4c) are fixedly arranged at the bottom of the connecting plate (4f). The upper positioning seat (11) and the lower positioning seat (12) are both provided with clamping holes (4e) for the clamping shafts (4c) to be clamped. The two insertion rods (4a) are fixedly mounted on the workbench (2) in a horizontal manner. The ends of the insertion rods (4a) are located on the circumference of S1. Outside the outline, an insertion hole (4d) for inserting the insertion rod (4a) is provided on the upper positioning seat (11) and the lower positioning seat (12), and two extension bars (5b) are provided along the side notch (5a1) extending outward. Before the insertion hole (4d) and the insertion rod (4a) are completely separated, the slider (13) is inserted between the two extension bars (5b). When the lifting plate (7a) is compressed to the limit position by the slider (13), the clamping shaft (4c) is pulled out from the clamping hole (4e).

5. A rim and spoke welding device according to claim 1, characterized in that: Each elastic outward pushing mechanism (7) includes a lifting plate (7a), a retaining ring (7b), a spring (7c) and a guide column (7d). The guide column (7d) is mounted on the vertical guide plate (5) so as to be slidable along the length direction of the vertical guide groove (5a). The lifting plate (7a) is fixedly mounted on the end of the guide column (7d). The retaining ring (7b) is fixedly mounted on the outer edge of the guide column (7d). The spring (7c) is used to provide an elastic force to the retaining ring (7b) to approach the slider (13).

6. A rim and spoke welding device according to claim 2, characterized in that: The rotating mechanism (1) includes two unilateral pushing mechanisms, two rotating shafts (1a) are respectively connected to the two unilateral pushing mechanisms, each unilateral pushing mechanism includes a gear (1b), a rack (1c) and an electric push rod (1d), the gear (1b) is fixedly mounted on the end of the rotating shaft (1a), the rotating shaft (1a) is rotatably mounted on the workbench (2) through a shaft seat, the rack (1c) is meshed with the gear (1b), the rack (1c) is horizontally slidably mounted on the workbench (2), the electric push rod (1d) is fixedly mounted on the workbench (2), and the electric push rod (1d) is fixedly connected to the end of the rack (1c).

7. A rim and spoke welding device according to claim 3, characterized in that: The horizontal pushing mechanism (3c) further includes an electric push rod 2 (3c2), which is fixedly mounted on the workbench (2), a pushing plate (3c1) is fixedly connected to the working end of the electric push rod 2 (3c2), and extended side plates are provided on both sides of the pushing plate (3c1), and a sliding shaft 2 (6e) is fixedly connected to the extended side plates.

8. A rim and spoke welding device as claimed in claim 2, characterized in that: The elastic pusher (3d) includes a second spring (3d1), a second guide post (3d2) and a guide plate (3d3), wherein the guide plate (3d3) is fixedly mounted on the vertical guide plate (5), the second guide post (3d2) is slidably connected to the guide plate (3d3), and a circular push plate that contacts the disc (3a) is provided at the end of the second guide post (3d2), and the second spring (3d1) is used to apply an elastic force to the circular push plate close to the disc (3a).

9. A rim and spoke welding device as claimed in claim 3, characterized in that: The rotating rod (6c) is a curved structure.

10. The rim and spoke welding device according to claim 1, characterized in that: A snap ring (14) is provided on both the upper positioning seat (11) and the lower positioning seat (12). The two snap rings (14) have the same thickness and are provided with a beveled edge that fits the contour of the wheel hub (10).

Images