Servo type longitudinal beam positioning device

Abstract

The servo type longitudinal beam positioning device can replace manual work to achieve alignment of the center of a longitudinal beam in the length direction and the center of an electrophoresis line rack, the alignment speed is high, precision is high, and time and labor are saved. In addition, a transverse alignment mechanism is further arranged, vertical rollers can push wing surfaces of the longitudinal beams to enable the longitudinal beams to be aligned in the direction of the center lines of the corresponding roadways, finally the longitudinal beams of the two roadways are located in the width direction with the center lines of the corresponding roadways, and therefore it can be guaranteed that the shortest longitudinal beam and the longest longitudinal beam can be stably pushed when centered in the length direction; the distance between the central axes of the two longitudinal beams in the width direction is fixed, and a reference is provided for a truss manipulator to stack the longitudinal beams on a rack.

Description

Technical Field

[0001] This utility model relates to the field of chassis longitudinal beam positioning technology, specifically a servo-type longitudinal beam positioning device. Background Technology

[0002] As a crucial component of automotive structures, the mechanization level of the chassis longitudinal beam production process directly impacts production efficiency and product quality. In existing chassis longitudinal beam production logistics lines, conveyor rollers, as a key auxiliary device, are widely used for transferring chassis longitudinal beams between different workstations. However, despite their excellent performance in conveying chassis longitudinal beams, their function is limited to simple transfer. Traditional longitudinal beam conveyor roller designs do not consider the positioning function of the longitudinal beams along their length, which can no longer fully meet production demands. For example, with the continuous development and improvement of chassis longitudinal beam production processes, electrophoresis of chassis longitudinal beam components has become a new production trend. In this process, longitudinal beams completed in the previous stage need to be stacked in layers on the electrophoresis line's platform using a lifting and transfer device. To ensure the stability of the platform in the electrophoresis tank and avoid swaying caused by uneven loading of the longitudinal beams, higher requirements are placed on the positional accuracy of the longitudinal beams. Specifically, the longitudinal beams transported by the conveyor rollers need to automatically align their center along their length with the center of the platform. Existing conveyor roller designs cannot meet these new process requirements. This means that additional manual operation is needed to adjust the position of the longitudinal beams, increasing production costs and time. Moreover, the adjustment accuracy varies from person to person and is not stable enough. Therefore, there is an urgent need for a positioning device that can replace manual operation. Summary of the Invention

[0003] The purpose of this invention is to provide a servo-type longitudinal beam positioning device that can solve the above-mentioned problems. It is located at the end of the assembly station of the conveyor roller conveyor and can replace manual operation through mechanized operation to achieve alignment of the center of the longitudinal beam in the longitudinal beam length direction with the center of the platform at this station, thereby providing a reference for the gantry robot to stack the longitudinal beams on the platform.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a servo-type longitudinal beam positioning device, which has a conveyor roller track, the conveyor roller track is composed of rollers, a sprocket and chain drive mechanism and a first support, multiple rollers are parallel to each other and arranged longitudinally along the first support, characterized in that: two sets of longitudinal alignment mechanisms are symmetrically installed on both sides of the first support, and the two sets of longitudinal alignment mechanisms are distributed side by side on the left and right sides of the first support.

[0005] Each longitudinal alignment mechanism has a second support. Two first guide rails and a first rack are mounted longitudinally side by side on the second support. An alignment frame is mounted on the second support. The alignment frame consists of a base plate and a cantilever structure. A first slider is mounted on the bottom of the base plate. The alignment frame slides with the first guide rails through the first slider. A servo motor is mounted on the base plate. A drive gear is mounted on the output shaft of the servo motor. The drive gear meshes with the first rack. The upper end of the base plate is bent towards the conveyor roller. A buffer mechanism is mounted on the upper end of the base plate.

[0006] The buffer mechanism has a connecting plate that is connected to the upper end of the alignment frame. Two linear bearings are mounted side by side on the connecting plate, and a guide shaft is installed inside each linear bearing. A baffle is installed on the outer ends of the two guide shafts. Two guide shafts are mounted side by side on the baffle. Two through holes are opened on the connecting plate corresponding to the guide shafts. A spring is installed on each guide shaft, and the two ends of the spring contact the baffle and the connecting plate respectively. A sensor is installed on the connecting plate, and a sensing plate is installed on the baffle. An opening is opened on the connecting plate corresponding to the sensing plate, and the sensing plate can trigger the sensor.

[0007] A buffer block is installed on the baffle, and the buffer block is located between the connecting plate and the baffle.

[0008] A transverse alignment mechanism is installed between two adjacent rollers. The transverse alignment mechanism has a mounting plate, which is mounted on a first bracket. The mounting plate is laterally mounted with a second guide rail and a third guide rail. A second slider and a third slider are mounted on the second guide rail. A first vertical roller is mounted on the second slider. A second vertical roller is mounted on the third slider. A fourth slider and a fifth slider are mounted on the third guide rail. A third vertical roller is mounted on the fourth slider. A fourth vertical roller is mounted on the fifth slider. An opening and closing drive mechanism is installed on the mounting plate. The first, second, third, and fourth vertical rollers are arranged laterally.

[0009] The opening and closing drive mechanism is an electric push rod, and each of the second, third, fourth and fifth sliders is equipped with an electric push rod.

[0010] The opening and closing drive mechanism has a first gear, with its two sides meshing with a second gear and a third gear, respectively. The second gear, the first gear, and the third gear are longitudinally distributed. The first gear is located between the second guide rail and the third guide rail. The third gear meshes with a third rack. The two ends of the third gear are connected to a fourth slider and a fifth slider, respectively, through connecting parts. The second gear meshes with a second rack. The two ends of the second gear are connected to a second slider and a third slider, respectively, through connecting parts. A cylinder is mounted on the mounting plate, and the piston rod of the cylinder is connected to either the second rack or the third rack.

[0011] The advantages of this invention are: it can replace manual labor in aligning the center of the longitudinal beam along its length with the center of the electrophoresis line platform, achieving fast alignment with high precision and saving time and effort. Furthermore, it includes a transverse alignment mechanism that uses vertical rollers to push the longitudinal beam's flanges towards the centerline of its respective lane. Ultimately, the longitudinal beams of both lanes are positioned along their respective lane centerlines in the width direction. This ensures that both the shortest and longest longitudinal beams can be smoothly pushed when centered in the length direction, achieving a fixed distance between the central axes of the two longitudinal beams in the width direction, providing a reference for the gantry robot to stack the longitudinal beams onto the platform. Attached Figure Description

[0012] Figure 1 Schematic diagram of the servo-type longitudinal beam positioning device of this utility model

[0013] Figure 2 A three-dimensional structural diagram of the longitudinal alignment mechanism of the servo-type longitudinal beam positioning device described in this utility model.

[0014] Figure 3 Figure 2 Enlarged view of part I

[0015] Figure 4 Front view of the longitudinal alignment mechanism of the servo-driven longitudinal beam positioning device of this utility model.

[0016] Figure 5 Right view structural schematic diagram of the longitudinal alignment mechanism of the servo-type longitudinal beam positioning device of this utility model.

[0017] Figure 6 Schematic diagram of the buffer mechanism

[0018] Figure 7 Figure 6 AA section view

[0019] Figure 8 Figure 6 Schematic diagram of the three-dimensional structure of the buffer mechanism

[0020] Figure 9 Schematic diagram of the lateral alignment mechanism

[0021] Figure label:

[0022] 1 Conveying roller conveyor; 10 Roller; 11 Sprocket and chain drive mechanism; 12 First bracket; 13 Mounting plate;

[0023] 2. Longitudinal Alignment Mechanism

[0024] 20 Second bracket; 21 First guide rail; 22 First rack; 23 Alignment frame; 230 Base plate; 231 Cantilever frame; 24 Servo motor; 25 First slider;

[0025] 3. Lateral alignment mechanism

[0026] 30 Second guide rail 31 Second slider 32 Third slider 33 Fourth slider 34 Fifth slider 35 First vertical roller 36 Second vertical roller 37 Third vertical roller 38 Fourth vertical roller 39 Third guide rail.

[0027] 4. Buffer mechanism

[0028] 40 Connecting plate; 41 Baffle; 42 Guide shaft; 43 Linear bearing; 44 Buffer block; 45 Guide shaft; 46 Spring; 47 Sensor; 48 Sensing plate

[0029] 5 Opening and Closing Drive Mechanism

[0030] 50 Cylinder 51 Second rack 52 Third rack 53 First gear 54 Second gear 55 Third gear

[0031] 6 longitudinal beams Detailed Implementation

[0032] The purpose of this utility model is to provide a servo-type longitudinal beam positioning device. The following describes this utility model in further detail with reference to specific embodiments.

[0033] like Figure 1 As shown, the servo-type longitudinal beam positioning device includes a conveyor roller conveyor 1. The conveyor roller conveyor 1 consists of rollers 10, a sprocket and chain drive mechanism 11, and a first support 12. Multiple rollers 10 are parallel to each other and arranged longitudinally along the first support 12. Multiple rollers 10 are mounted side-by-side on the first support 12 along its longitudinal direction. The sprocket and chain drive mechanism 11 consists of a motor, a sprocket, and a chain. A sprocket is mounted at one end of each roller 10, a sprocket is mounted on the output shaft of the motor, and a chain is mounted on the sprocket. The motor drives all rollers 10 to rotate synchronously through the sprocket and chain, thereby enabling the rollers 10 to move the longitudinal beams on them longitudinally. Two longitudinal beams 6 are conveyed side-by-side on the conveyor roller conveyor 1. Two sets of longitudinal alignment mechanisms 2 are symmetrically mounted on both sides of the first support 12, distributed side-by-side on the left and right sides of the first support 12. Each set of longitudinal alignment mechanisms 2 can adjust the longitudinal position of one longitudinal beam.

[0034] like Figure 2 As shown, each longitudinal alignment mechanism 2 has a second bracket 20, the height of which is lower than the height of the first bracket 12. Two first guide rails 21 and a first rack 22 are mounted longitudinally side-by-side on the second bracket 20. An alignment frame 23 is mounted on the second bracket 20. Figure 3As shown, the alignment frame 23 consists of a base plate 230 and a cantilever frame 231. A first slider 25 is installed at the bottom of the base plate 230. The alignment frame 23 slides with the first guide rail 21 through the first slider 25. A servo motor 24 is installed on the base plate 230, and a drive gear is installed on the output shaft of the servo motor 24. The drive gear meshes with the first rack 22. The cooperation of the servo motor 24, the drive gear, and the first rack 22 can precisely drive the alignment frame 23 to move. Therefore, users can easily set parameters according to different models and sizes of the longitudinal beams and accurately control the positioning device to achieve automatic longitudinal positioning of the longitudinal beams. The upper end of the base plate 230 is bent towards the conveyor roller 1. As shown in the figure, a buffer mechanism 4 is installed at the upper end of the base plate 230, and the buffer mechanism 4 is located above the roller 10.

[0035] like Figure 3 As shown, the buffer mechanism 4 has a connecting plate 40. The connecting plate 40 is connected to the upper end of the alignment frame 23. Figure 6 As shown, two linear bearings 43 are mounted side-by-side on the connecting plate 40. A guide shaft 42 is installed inside each linear bearing 43, and a baffle 41 is mounted on the outer ends of the two guide shafts 42. Two guide shafts 45 are mounted side-by-side on the baffle 41. Two through holes are opened on the connecting plate 40 corresponding to the guide shafts 45. A spring 46 is installed on each guide shaft 45, with both ends of the spring 46 contacting the baffle 41 and the connecting plate 40 respectively. A sensor 47 is mounted on the connecting plate 40, and a sensing plate 48 is mounted on the baffle 41. A through-hole is opened on the connecting plate 40 corresponding to the sensing plate 48, allowing the sensing plate 48 to pass through the through-hole and trigger the sensor 47. The sensor 47 can be a proximity switch or a limit switch. The spring 46 can be a rectangular spring.

[0036] Working principle: Two longitudinal beams 6 enter the conveyor roller 1 side by side from the previous station. The roller 10 drives the two longitudinal beams to move towards the alignment frame 23. After the ends of the longitudinal beams contact the baffle 41, the baffle 41, pushed by the longitudinal beams 6, overcomes the elastic force of the spring 46 and moves closer to the connecting plate 40. At the same time, the baffle 41 drives the sensing plate 48 to move. When the sensor 47 detects the sensing plate 48, the sensing plate 48 sends a signal to the control device. When the sensors 47 of both buffer mechanisms 4 send signals, the roller 10 stops working. At this time, the servo motor 24 starts, and the alignment frame 23 moves longitudinally under the cooperation of the drive gear, the first guide rail 21 and the first rack 22. The alignment frame 23 pushes the longitudinal beams 6 to move longitudinally on the conveyor roller 1 until the center of the longitudinal beams in the length direction is aligned with the center of the electrophoresis line frame. Subsequently, driven by servo motors 24, the two alignment frames 23 return to their initial positions. At this point, the truss robot located on one side of the longitudinal alignment mechanism 2 can place the two longitudinal beams, positioned as required, onto the platform. The control device can be an existing industrial computer or PLC.

[0037] To improve the impact resistance of the buffer mechanism 4 and extend its service life, such as... Figure 8 As shown, a buffer block 44 is installed on the baffle 41, and the buffer block 44 is located between the connecting plate 40 and the baffle 41.

[0038] To further improve the level of mechanization, and also to improve the accuracy of subsequent stacking, such as Figure 9 As shown, a design was developed that allows for a fixed spacing between the central axes of the two longitudinal beams in the width direction. The specific scheme is as follows:

[0039] A transverse alignment mechanism 3 can be installed between two adjacent rollers 10. Depending on the length of the longitudinal beam, four to six transverse alignment mechanisms 3 are typically installed. Each transverse alignment mechanism 3 has a mounting plate 13, which is mounted on the first bracket 12. A second guide rail 30 and a third guide rail 39 are transversely mounted on the mounting plate 13. A second slider 31 and a third slider 32 are mounted on the second guide rail 30. A first vertical roller 35 is mounted on the second slider 31, and a second vertical roller 36 is mounted on the third slider 32. A fourth slider 33 and a fifth slider 34 are mounted on the third guide rail 39. A third vertical roller 37 is mounted on the fourth slider 33, and a fourth vertical roller 38 is mounted on the fifth slider 34. An opening and closing drive mechanism 5 is mounted on the mounting plate 13. The first vertical roller 35, second vertical roller 36, third vertical roller 37, and fourth vertical roller 38 are arranged transversely, with a longitudinal beam channel between the first vertical roller 35 and second vertical roller 36, and another longitudinal beam channel between the third vertical roller 37 and fourth vertical roller 38. The opening and closing drive mechanism 5 is an electric push rod. Each of the second slider 31, the third slider 32, the fourth slider 33 and the fifth slider 34 is equipped with an electric push rod. The electric push rod can realize the opening and closing of the second slider 31 relative to the third slider 32, and the opening and closing of the fourth slider 33 relative to the fifth slider 34, thereby ensuring that the distance between the central axes of the two longitudinal beams in the width direction is fixed.

[0040] To reduce costs and improve accuracy, such as Figure 9As shown, the opening and closing drive mechanism 5 has a first gear 53, whose two sides mesh with a second gear 54 and a third gear 55, respectively. The second gear 54, the first gear 53, and the third gear 55 are longitudinally distributed. The first gear 53 is located between the second guide rail 30 and the third guide rail 39. The third gear 55 meshes with a third rack 52, and its two ends are connected to a fourth slider 33 and a fifth slider 34, respectively, via connecting members. The second gear 54 meshes with a second rack 51, and its two ends are connected to a second slider 31 and a third slider 32, respectively, via connecting members. A cylinder 50 is mounted on the mounting plate 13, and the piston rod of the cylinder 50 is connected to either the second rack 51 or the third rack 52. When lateral alignment is required, cylinder 50 is activated. The piston rod of cylinder 50 drives the second rack 51 to move. The second rack 51 drives the third rack 52 to move through the second gear 54, the first gear 53, and the third gear 55. The second rack 51 and the third rack 52 move at the same speed but in opposite directions. The second rack 51 can drive the first vertical roller 35 and the second vertical roller 36 to move synchronously, and the third rack 52 can drive the third vertical roller 37 and the fourth vertical roller 38 to move synchronously. Thus, the first vertical roller 35 and the second vertical roller 36 are grouped together, and the third vertical roller 37 and the fourth vertical roller 38 are grouped together. The synchronous opening and closing of the two groups of vertical rollers can efficiently and accurately fix the distance between the central axes of the two longitudinal beams in the width direction.

[0041] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.

Claims

1. A servo-type longitudinal beam positioning device, comprising a conveyor roller conveyor (1), the conveyor roller conveyor (1) being composed of rollers (10), a sprocket and chain drive mechanism (11), and a first support (12), wherein multiple rollers (10) are parallel to each other and arranged longitudinally along the first support (12), characterized in that: Two sets of longitudinal alignment mechanisms (2) are symmetrically installed on both sides of the first bracket (12), and the two sets of longitudinal alignment mechanisms (2) are distributed side by side on the left and right sides of the first bracket (12). Each longitudinal alignment mechanism (2) has a second support (20), on which two first guide rails (21) and a first rack (22) are mounted longitudinally side by side. An alignment frame (23) is mounted on the second support (20). The alignment frame (23) is composed of a base plate (230) and a cantilever frame (231). A first slider (25) is mounted on the bottom of the base plate (230). The alignment frame (23) slides with the first guide rail (21) through the first slider (25). A servo motor (24) is mounted on the base plate (230). A drive gear is mounted on the output shaft of the servo motor (24). The drive gear meshes with the first rack (22). The upper end of the base plate (230) is bent toward the conveyor roller (1). A buffer mechanism (4) is mounted on the upper end of the base plate (230). The buffer mechanism (4) has a connecting plate (40) connected to the upper end of the alignment frame (23). Two linear bearings (43) are installed side by side on the connecting plate (40). A guide shaft (42) is installed in each linear bearing (43). A baffle (41) is installed on the outer ends of the two guide shafts (42). Two guide shafts (45) are installed side by side on the baffle (41). Two through holes are opened on the connecting plate (40) corresponding to the guide shafts (45). A spring (46) is installed on each guide shaft (45). The two ends of the spring (46) are in contact with the baffle (41) and the connecting plate (40) respectively. A sensor (47) is installed on the connecting plate (40). A sensing plate (48) is installed on the baffle (41). An opening is opened on the connecting plate (40) corresponding to the sensing plate (48). The sensing plate (48) can trigger the sensor (47).

2. The servo-type longitudinal beam positioning device according to claim 1, characterized in that: A buffer block (44) is installed on the baffle (41), and the buffer block (44) is located between the connecting plate (40) and the baffle (41).

3. The servo-type longitudinal beam positioning device according to claim 1, characterized in that: A transverse alignment mechanism (3) is installed between two adjacent rollers (10). The transverse alignment mechanism (3) has a mounting plate (13). The mounting plate (13) is mounted on the first bracket (12). The mounting plate (13) is transversely mounted with a second guide rail (30) and a third guide rail (39). The second guide rail (30) is mounted with a second slider (31) and a third slider (32). The second slider (31) is mounted with a first vertical roller (35). The third slider (32) is mounted with a second vertical roller (36). The third guide rail (39) is mounted with a fourth slider (33) and a fifth slider (34). The fourth slider (33) is mounted with a third vertical roller (37). The fifth slider (34) is mounted with a fourth vertical roller (38). The mounting plate (13) is mounted with an opening and closing drive mechanism (5). The first vertical roller (35), the second vertical roller (36), the third vertical roller (37), and the fourth vertical roller (38) are arranged transversely.

4. The servo-type longitudinal beam positioning device according to claim 3, characterized in that: The opening and closing drive mechanism (5) is an electric push rod, and each of the second slider (31), the third slider (32), the fourth slider (33) and the fifth slider (34) is equipped with an electric push rod.

5. The servo-type longitudinal beam positioning device according to claim 3, characterized in that: The opening and closing drive mechanism (5) has a first gear (53), which meshes with a second gear (54) and a third gear (55) on both sides. The second gear (54), the first gear (53) and the third gear (55) are longitudinally distributed. The first gear (53) is located between the second guide rail (30) and the third guide rail (39). The third gear (55) meshes with the third rack (52). The two ends of the third gear (55) are connected to the fourth slider (33) and the fifth slider (34) through connecting parts. The second gear (54) meshes with the second rack (51). The two ends of the second gear (54) are connected to the second slider (31) and the third slider (32) through connecting parts. A cylinder (50) is installed on the mounting plate (13). The piston rod of the cylinder (50) is connected to the second rack (51) or the third rack (52).

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