Double-longitudinal-beam automatic centering device for frame production line

Abstract

A double-longitudinal-beam automatic centering device for a frame production line comprises a conveying frame, a plurality of horizontally-arranged conveying rollers are installed on the conveying frame, the conveying frame is divided into a temporary storage station and a stacking station, the temporary storage station is located at the front end of the stacking station in the conveying direction, a plurality of first centering devices are installed on the temporary storage station, and a plurality of second centering devices are installed on the stacking station. And a plurality of second centering devices are mounted on the stacking station. The longitudinal beam centering and stacking device has the advantages that centering and limiting in the width direction of a plurality of longitudinal beams can be guaranteed to be consistent with the reference of equipment in subsequent transfer operation when the longitudinal beams are transferred and transported on a conveying frame, the deviation phenomenon is avoided, accurate grabbing and stacking of the longitudinal beams are achieved, and the working efficiency is improved. And the longitudinal beams cannot be damaged in the conveying, grabbing and transferring processes, and the quality of the longitudinal beams can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of longitudinal beam conveying and positioning auxiliary devices, in particular to a double longitudinal beam automatic centering device for a vehicle frame production line. Background Art

[0002] Currently, nearly all automated production lines for vehicle frame longitudinal beams utilize conveyor rollers as auxiliary equipment for automated transfer. This equipment enables the remote and rapid transport of frame longitudinal beams within the workshop. Conveyor rollers are fast, safe, reliable, and capable of segmented control. Different conveying speeds can be set according to the needs of different workstations, allowing for flexible adjustments to production schedules. Therefore, they are widely used in automated production lines for vehicle frame longitudinal beams.

[0003] Traditional longitudinal beam conveyor rollers can basically only realize the transfer and transportation of longitudinal beams between various processes, and cannot realize the centering of longitudinal beams in the width direction. For example, when two or more groups of longitudinal beams are transferred simultaneously on the conveyor roller, if the longitudinal beams are displaced in the width direction, they will be out of the reference position of the lifting and transferring device in subsequent transfer operations such as palletizing and grabbing. It will be impossible to accurately grasp the longitudinal beams, which will affect the subsequent sequential palletizing operations. In addition, due to the offset of the longitudinal beam position during the grabbing process, the surface of the longitudinal beam will be damaged, affecting the quality of the longitudinal beam itself. Utility Model Content

[0004] The purpose of the utility model is to provide a double longitudinal beam automatic centering device for a frame production line, which realizes longitudinal beam centering requirements under different operation requirements through a first centering device and a second centering device, thereby solving the problems in the prior art.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a double longitudinal beam automatic centering device for a frame production line includes a conveyor frame, a plurality of horizontally arranged conveyor rollers are installed on the conveyor frame, the conveyor frame is divided into a buffer station and a material coding station, the buffer station is at the front end of the feeding direction of the material coding station, a plurality of first centering devices are installed on the buffer station, and a plurality of second centering devices are installed on the material coding station, the first centering device includes a first fixed frame arranged in the width direction of the conveyor frame, both ends of the first fixed frame are equipped with vertically arranged first guide rollers, the middle position of the first fixed frame is provided with two staggered second guide rollers, the lower part of the first fixed frame is equipped with a rotatable disc, two vertically arranged first push rods are installed on the disc, and the two first push rods The line connecting the two passes through the center of the disc, and when the disc rotates, it can drive the two first push rods to rotate close to the second guide roller respectively. The second centering device includes a second fixed frame arranged on the conveying frame, and the second fixed frame is equipped with three evenly arranged third guide rollers. A unit centering mechanism is also provided on the second fixed frame on the rear side of one group of adjacent third guide rollers. The unit centering mechanisms on adjacent second centering devices are all staggered. The unit centering mechanism can center the longitudinal beam between the corresponding two third guide rollers, and the unit centering mechanism includes a horizontally arranged guide rail, which is located between the two third guide rollers, and two sliders that can move synchronously in opposite directions are installed on the guide rail. Each slider is equipped with a vertically arranged second push rod, and the two second push rods can move synchronously close to or away from each other on the guide rail. The first centering device is provided with a synchronous drive mechanism mounted at the bottom thereof, the synchronous drive mechanism comprising a gear positioned at the axis of the bottom of each disk, a telescopic cylinder mounted on the conveyor frame, a rack mounted on the piston rod of the telescopic cylinder, the racks meshing with the gears, and the telescopic cylinder piston rod being capable of driving the disks of each first centering device to rotate synchronously. The unit centering mechanism further comprises a drive cylinder, the piston rod of the drive cylinder being connected to one of the sliders, two sets of bearing blocks arranged side by side being mounted on a second fixed frame at the rear of the guide rail, each bearing block being equipped with a rotatable pulley, a synchronous belt being interlocked between the pulleys, a first clamping bracket being mounted on the slider connected to the piston rod of the drive cylinder, and a second clamping bracket being mounted on the other slider, wherein the first clamping bracket is fixedly clamped at the upper side of the synchronous belt, and the second clamping bracket is fixedly clamped at the lower side of the synchronous belt, and when the piston rod of the drive cylinder is extended or retracted, the two sliders and the second push rods thereon are driven to move synchronously closer or farther apart. A synchronous belt tensioning mechanism is installed on the second fixed frame on one side of one of the bearing seats. The synchronous belt tensioning mechanism includes a tensioning seat, in which a tensioning bolt is installed. One end of the stud of the tensioning bolt contacts the bearing seat. A long hole is opened on the bottom plate of the bearing seat, in which a locking bolt is installed. After loosening the locking bolt, rotating the tensioning bolt can adjust the relative distance between the two sets of bearing seats and their upper pulleys.Vertical plates are set at both ends of the guide rail in the length direction, and the upper ends of the two vertical plates are connected to horizontally arranged guide cross plates. The second push rod is provided with a guide groove that matches the guide cross plate, and a detachable wear-resistant plate is installed on the inner side of the second push rod.

[0006] The positive effects of the present invention are as follows: the present invention is a kind of automatic centering device for double longitudinal beams for a vehicle frame production line, and a plurality of first centering devices and second centering devices are respectively provided on the buffer station and the stacking station on the conveyor frame, wherein the first centering device can realize that the longitudinal beam is positioned with respect to the busbar edge of the second guide roller at the middle position of the conveyor frame in the width direction, and can provide a reference for the suction cup crane at the buffer station to grab the longitudinal beam, and the second centering device can realize that the longitudinal beam is fixed in the width direction in terms of the central axis spacing of the longitudinal beam, and can provide a reference for the truss manipulator to stack the longitudinal beam on the platform. It ensures that when multiple groups of longitudinal beams are transferred and transported on the conveyor frame, their own centering limit in the width direction is consistent with the reference of the equipment in the subsequent transfer operation, thus avoiding offset, realizing accurate grabbing and stacking of the longitudinal beams, and no damage to the longitudinal beams is caused during the conveying and grabbing and transferring process, and can effectively ensure the quality of the longitudinal beams themselves. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0008] Figure 2 It is a top view of the utility model;

[0009] Figure 3 is a schematic structural diagram of the first centering device;

[0010] Figure 4 is a schematic structural diagram of the second centering device;

[0011] Figure 5 is a top view of the second centering device;

[0012] Figure 6 yes Figure 5 Enlarged view of the AA section view;

[0013] Figure 7 yes Figure 5 Enlarged view of the BB section;

[0014] Figure 8 yes Figure 5 A partial enlarged view of middle I;

[0015] Figure 9 This is a schematic diagram of the state in which the first centering device pushes the two longitudinal beams on the conveyor frame to the second guide roller for positioning;

[0016] Figure 10This is a schematic diagram of the state in which the second centering device centers and positions the two longitudinal beams on the conveyor frame between the two third guide rollers. DETAILED DESCRIPTION

[0017] The utility model is a double longitudinal beam automatic centering device for a frame production line, such as Figure 1 and Figure 2 As shown, it includes a conveying frame 1, on which a plurality of horizontally arranged conveying rollers 2 are installed. The rotation of the conveying rollers 2 can drive the longitudinal beams thereon to be transported along the length direction of the conveying frame 1.

[0018] The conveyor frame 1 is divided into a buffer station and a stacking station. The buffer station is at the front end of the feeding direction of the stacking station. Several first centering devices are installed on the buffer station, and several second centering devices are installed on the stacking station. The first centering device can realize the edge positioning of the two longitudinal beams in the width direction with the guide roller busbar at the center position, providing a reference for the suction cup crane of the buffer station to grab the longitudinal beam. The second centering device can realize the fixed distance between the central axes of the two longitudinal beams in the width direction, providing a reference for the truss manipulator to stack the longitudinal beams on the platform.

[0019] like Figure 3 As shown, the first centering device includes a first fixed frame 3 arranged in the width direction of the conveyor frame 1. Vertically arranged first guide rollers 4 are mounted on both ends of the first fixed frame 3. Two staggered second guide rollers 5 are located in the middle of the first fixed frame 3. A rotatable disk 6 is mounted at the bottom of the first fixed frame 3. Two vertically arranged first push rods 7 are mounted on the disk 6. The line connecting the two first push rods 7 passes through the center of the disk 6. When the disk 6 rotates, it drives the two first push rods 7 to rotate closer to the second guide rollers 5.

[0020] Each structure in the above-mentioned first centering device does not affect the normal rotation of the conveying roller 2. The two staggered second guide rollers 5 can effectively reduce the space occupied by the guide rollers in the middle position, which is convenient for the transportation of the longitudinal beams. When the two longitudinal beams are transferred on the conveying rack 1 of the buffer station, the longitudinal beams need to be aligned and positioned to the second guide roller 5 in the middle position. The rotation of the disc 6 can allow the first push rod 7 to push the longitudinal beam to the position of the second guide roller 5, thereby realizing the corresponding positioning and guiding.

[0021] like Figure 4-7 As shown, the second centering device includes a second fixed frame 8 arranged on the conveying frame 1, and three evenly arranged third guide rollers 9 are installed on the second fixed frame 8. A unit centering mechanism is also provided on the second fixed frame 8 on the rear side of one group of adjacent third guide rollers 9. The unit centering mechanisms on adjacent second centering devices are staggered. The unit centering mechanism can center and position the longitudinal beam between the corresponding two third guide rollers 9.

[0022] The unit centering mechanism includes a horizontally arranged guide rail 10 located between the two third guide rollers 9. Two sliders 11 are mounted on the guide rail 10, capable of synchronously moving in opposite directions. Each slider 11 is mounted with a vertically arranged second push rod 12, which can move synchronously toward or away from each other on the guide rail 10. The movement of the second push rod 12 clamps the longitudinal beam between the third guide rollers 9, ensuring that the longitudinal beam is located at the center axis between the third guide rollers 9 and maintaining a fixed spacing between adjacent longitudinal beams.

[0023] Furthermore, in order to achieve synchronous action of all the first centering devices and enable the longitudinal beam to move uniformly in the length direction close to the second guide roller 5 to form a limited guide, a synchronous drive mechanism is installed at the bottom of the first centering device, and the synchronous drive mechanism includes a gear 13 arranged at the axial position of the bottom of each disc 6, and a telescopic cylinder 14 is installed on the conveying frame 1. A rack 15 is installed on the piston rod of the telescopic cylinder 14, and the rack 15 is engaged with each gear 13. The telescopic piston rod of the telescopic cylinder 14 can drive the disc 6 of each first centering device to rotate synchronously.

[0024] Furthermore, to achieve synchronized, reverse movement of the two second push rods 12 in the second centering device and adaptively clamp and position longitudinal beams of varying widths, the unit centering mechanism also includes a drive cylinder 16, the piston rod of which is connected to one of the sliders 11. Two sets of bearing blocks 17 are mounted side by side on the second fixed frame 8 at the rear of the guide rail 10. Each bearing block 17 is mounted with a rotatable pulley 18, with a synchronous belt 19 interlocking the pulleys 18.

[0025] A first clamping bracket 20 is provided on the slider 11 connected to the piston rod of the driving cylinder 16, and a second clamping bracket 21 is provided on the other slider 11, wherein the first clamping bracket 20 is fixedly clamped at the upper position of the synchronous belt 19, and the second clamping bracket 21 is fixedly clamped at the lower position of the synchronous belt 19. When the piston rod of the driving cylinder 16 is extended or retracted, it can drive the two sliders 11 and the second push rod 12 thereon to move closer or farther synchronously.

[0026] Furthermore, in order to achieve the tensioning of the synchronous belt 19 and ensure that the sliders 11 on both sides can move synchronously in opposite directions, a synchronous belt tensioning mechanism is installed on the second fixing frame 8 on one side of the bearing seat 17, such as Figure 8As shown, the synchronous belt tensioning mechanism includes a tensioning seat 22, in which a tensioning bolt 23 is mounted. One end of the stud of the tensioning bolt 23 contacts the bearing seat 17. Turning the tensioning bolt 23 can push the bearing seat 17 to move relative to the second fixing bracket 8. An elongated hole 24 is formed in the bottom plate of the bearing seat 17, in which a locking bolt 25 is mounted. After loosening the locking bolt 25, turning the tensioning bolt 23 can adjust the relative distance between the two sets of bearing seats 17 and their upper pulleys 18, thereby ensuring that the pulleys 18 on both sides can tension the synchronous belt 19.

[0027] Furthermore, to ensure that the second push rod 12 can be positioned and guided along the length of the guide rail 10, vertical plates 26 are provided at both ends of the guide rail 10 in the longitudinal direction. The upper ends of the two vertical plates 26 are connected to horizontally arranged guide cross plates 27. The second push rod 12 is provided with guide grooves 28 that cooperate with the guide cross plates 27. To prevent direct hard contact and compression between the inner side of the second push rod 12 and the longitudinal beam, a removable wear plate 29 is installed on the inner side of the second push rod 12. The wear plate 29 is a consumable part that can be replaced regularly. This not only ensures a stable clamping of the longitudinal beam, but also extends the service life of the second push rod 12 to a certain extent.

[0028] The technical solution of the present invention is not limited to the scope of the embodiments described in the present invention. The technical contents not described in detail in the present invention are all well-known technologies.

Claims

1. An automatic centering device for double longitudinal beams for a vehicle frame production line, characterized by: The invention comprises a conveying frame (1), a plurality of horizontally arranged conveying rollers (2) are installed on the conveying frame (1), the conveying frame (1) is divided into a buffer station and a material coding station, the buffer station is located at the front end of the feeding direction of the material coding station, a plurality of first centering devices are installed on the buffer station, and a plurality of second centering devices are installed on the material coding station, the first centering devices comprising a first fixed frame (3) arranged in the width direction of the conveying frame (1), both ends of the first fixed frame (3) are installed with vertically arranged first guide rollers (4), the middle position of the first fixed frame (3) is provided with two staggered second guide rollers (5), the lower part of the first fixed frame (3) is installed with a rotatable disc (6), the disc (6) is installed with two vertically arranged first push rods (7), the connecting line of the two first push rods (7) passes through the center of the disc (6), and the disc (6) can drive the two first push rods when it rotates. (7) respectively rotate and approach the second guide roller (5), the second centering device includes a second fixed frame (8) arranged on the conveying frame (1), three third guide rollers (9) arranged evenly are installed on the second fixed frame (8), and a unit centering mechanism is further provided on the second fixed frame (8) on the rear side of one group of adjacent third guide rollers (9). The unit centering mechanisms on adjacent second centering devices are arranged alternately, and the unit centering mechanism can center the longitudinal beam between the corresponding two third guide rollers (9). The unit centering mechanism includes a horizontally arranged guide rail (10), the guide rail (10) is located between the two third guide rollers (9), and two sliders (11) that can move synchronously in opposite directions are installed on the guide rail (10). Each slider (11) is installed with a vertically arranged second push rod (12), and the two second push rods (12) can move synchronously closer or farther on the guide rail (10).

2. The automatic centering device for double longitudinal beams for a vehicle frame production line according to claim 1, characterized in that: A synchronous driving mechanism is installed at the bottom of the first centering device, and the synchronous driving mechanism includes a gear (13) arranged at the axis position of the bottom of each disk (6). A telescopic cylinder (14) is installed on the conveying frame (1), and a rack (15) is installed on the piston rod of the telescopic cylinder (14). The rack (15) and each gear (13) are meshed with each other. The telescopic piston rod of the telescopic cylinder (14) can drive the disks (6) of each first centering device to rotate synchronously.

3. The automatic centering device for double longitudinal beams for a vehicle frame production line according to claim 1, characterized in that: The unit centering mechanism also includes a driving cylinder (16), a piston rod of the driving cylinder (16) is connected to one of the sliders (11), two sets of bearing seats (17) arranged side by side are installed on the second fixed frame (8) on the rear side of the guide rail (10), each bearing seat (17) is installed with a rotatable pulley (18), and a synchronous belt (19) is installed between the pulleys (18), a first clamping bracket (20) is provided on the slider (11) connected to the piston rod of the driving cylinder (16), and a second clamping bracket (21) is provided on the other slider (11), wherein the first clamping bracket (20) is fixedly clamped at the upper side position of the synchronous belt (19), and the second clamping bracket (21) is fixedly clamped at the lower side position of the synchronous belt (19), and when the piston rod of the driving cylinder (16) is extended or retracted, it can drive the two sliders (11) and the second push rod (12) thereon to move closer or farther synchronously.

4. The automatic centering device for double longitudinal beams for a vehicle frame production line according to claim 3, characterized in that: A synchronous belt tensioning mechanism is installed on a second fixing frame (8) on one side of one of the bearing seats (17). The synchronous belt tensioning mechanism includes a tensioning seat (22). A tensioning bolt (23) is installed in the tensioning seat (22). One end of the stud of the tensioning bolt (23) contacts the bearing seat (17). A long hole (24) is opened on the bottom plate of the bearing seat (17). A locking bolt (25) is installed in the long hole (24). After loosening the locking bolt (25), the tensioning bolt (23) is rotated to adjust the relative distance between the two groups of bearing seats (17) and the upper pulley (18).

5. The automatic centering device for double longitudinal beams for a vehicle frame production line according to claim 1, characterized in that: Both ends of the guide rail (10) in the longitudinal direction are provided with vertical plates (26), the upper ends of the two vertical plates (26) are connected with horizontally arranged guide transverse plates (27), the second push rod (12) is provided with a guide groove (28) that matches the guide transverse plate (27), and a detachable wear-resistant plate (29) is installed on the inner side of the second push rod (12).

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