Large workpiece transfer equipment for production line and operation method thereof

Abstract

The present invention belongs to the technical field of workpiece transfer, and in particular, is a large-scale workpiece transfer equipment for a production line and an operating method thereof, comprising a lifting platform with rollers installed at the bottom, an integrated frame for integrated installation of parts installed on the upper surface of the lifting platform, a transfer platform installed on the upper surface of the integrated frame, a clamping device for smoothly loading or unloading the workpiece placed on the transfer platform installed on the right end surface of the transfer platform, and a shock-absorbing device for buffering the impact force on the workpiece during loading or unloading of the workpiece installed on the left end surface of the lifting platform. The large-scale workpiece transfer equipment for a production line and an operating method thereof, by setting a clamping device, drives two connecting columns to move to the direction of the workpiece through a hydraulic cylinder, and the cooperation of two driving gears with a first connecting rack and a second connecting rack, and the cooperation of a threaded rod with a clamping slide block, clamps the workpiece, thereby improving the transfer efficiency of the transfer equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece transfer, and in particular to large-scale workpiece transfer equipment for a production line and an operating method thereof. Background Art

[0002] In order to effectively improve production efficiency, production workshops usually use production lines. For production lines with two or more assembly lines, transfer devices are usually used to transfer workpieces from one assembly line to another.

[0003] The existing transfer device can only be pushed to one side of the processing platform, and there is still a certain distance between the workpiece to be transferred. When placing materials on the workpiece, it needs the assistance of staff. In addition, the weight and volume of large workpieces are large, which is inconvenient to operate. When the workpiece is moved to the transfer device or to the processing platform, its own weight will generate impact force on the transfer device or the processing platform. As the use time increases, the transfer device or the processing platform will be damaged, reducing the working efficiency and effect of the transfer device. Summary of the invention

[0004] Based on the technical problems that the existing large workpiece transfer device needs the assistance of staff when in use, which is inconvenient to operate, and when the workpiece is moved to the transfer device or to the processing platform, its own weight will impact the transfer device or the processing platform, affecting the working efficiency and effect of the transfer device, the present invention proposes a large workpiece transfer equipment for a production line and an operating method thereof.

[0005] The present invention proposes a large-scale workpiece transfer equipment for a production line and an operation method thereof, comprising a lifting platform with rollers installed at the bottom, an integrated frame for integrated installation of parts installed on the upper surface of the lifting platform, a transfer platform installed on the upper surface of the integrated frame, a driving device on one side of the integrated frame for driving the transfer platform to reciprocate along the length direction of a main slide slot provided on the integrated frame, a clamping device for stably loading or unloading workpieces placed on the transfer platform installed on the right end surface of the transfer platform, and a shock absorbing device for buffering the impact force on the workpiece during loading or unloading of the workpiece installed on the left end surface of the lifting platform;

[0006] A driving device, the driving device comprising a connecting shaft and a tooth column fixedly sleeved on the outer surface of the connecting shaft, a plurality of transmission gears are fixedly sleeved on the outer surfaces of both ends of the connecting shaft, and the outer surfaces of the plurality of transmission gears are connected by a transmission belt with a serrated inner surface;

[0007] A clamping device, the clamping device comprises two symmetrically distributed connecting columns, the opposite surfaces of the two connecting columns are provided with guide grooves, the inner walls of the two guide grooves are respectively provided with two threaded rods with opposite thread rotation directions through bearings, the inner walls of the guide grooves are slidably sleeved with a clamping slider threadedly connected to the outer surfaces of the threaded rods, one end surface of the connecting column is fixedly connected with a clamping seat, the inner wall of the clamping seat is transversely provided with a first groove, and the inner wall of the first groove is slidably plugged with a clamping end block;

[0008] A shock absorbing device, the shock absorbing device includes a shock absorbing seat fixed to one end of the transfer platform and a buffer platform arranged above the shock absorbing seat, a mounting groove is opened on one side surface of the shock absorbing seat, two symmetrically distributed support rods are fixedly installed on the inner wall of the mounting groove, a first spring is movably sleeved on the outer surface of the support rod, and a sliding seat is slidably sleeved on the outer surface of the support rod.

[0009] Preferably, a mounting seat is fixedly mounted on one side of the integrated frame, a first servo motor is fixedly mounted on the inner wall of the mounting seat, and a main shaft end surface of the first servo motor is fixedly connected to one end surface of one of the connecting shafts.

[0010] Preferably, a tooth plate fixedly connected to the lower surface of the transfer platform is provided above the tooth column, and the inner walls on both sides of the integrated frame are provided with a first mounting port for installing the connecting shaft, and the outer surfaces at both ends of the connecting shaft are connected to the inner wall of the first mounting port through bearings.

[0011] Preferably, a driving groove is provided on one side surface of the clamping end block, wherein the inner bottom wall of one of the driving grooves is fixedly connected with a first connecting rack, and the inner top wall of the other driving groove is fixedly connected with a second connecting rack, the end of the threaded rod passes through the interior of the clamping seat and is fixedly sleeved with a driving gear, the two driving gears are respectively engaged with the first connecting rack and the second connecting rack for transmission, and photoelectric corresponding switches are installed on the opposite surfaces of the two clamping end blocks.

[0012] Preferably, the clamping device also includes a first connecting seat fixed to the upper surface of the transfer platform, the inner wall of the first connecting seat is provided with two symmetrically distributed through grooves, the outer surface of the connecting column is movably connected to the inner wall of the through groove, and a first mounting plate is fixedly connected between the two connecting columns.

[0013] Preferably, a second mounting opening for mounting a second servo motor is formed on one side surface of the first mounting plate, and pulleys are fixedly sleeved on the outer surface of the main shaft of the second servo motor and the outer surface of one end of the two threaded rods, and the three pulleys are connected by belt transmission.

[0014] Preferably, a first mounting seat is fixedly connected to one end surface of the transfer platform, a hydraulic cylinder is installed on the upper surface of the first mounting seat, and an outer surface of a hydraulic rod of the hydraulic cylinder is fixedly connected to an inner wall of the first mounting plate.

[0015] Preferably, two symmetrically distributed first telescopic sleeves are fixedly connected to the upper surface of the front end of the shock absorber seat, the inner wall of the first telescopic sleeve is movably sleeved with a first telescopic rod, the top of the first telescopic sleeve is fixedly connected to the lower surface of the buffer table, and the outer surface of the first telescopic rod located between the first telescopic sleeve and the buffer table is sleeved with a second spring for buffering the buffer table.

[0016] Preferably, the front end lower surface of the buffer table is movably hinged with two symmetrically distributed second telescopic sleeves through a hinge seat, the inner walls of the two second telescopic sleeves are movably hinged with second telescopic rods, a third spring is arranged between one end of the second telescopic rod and the inner wall of one end of the second telescopic sleeve, and the rear end upper surface of the shock absorbing seat is fixedly connected with a plurality of fourth springs distributed in a linear array, and the free end of the fourth spring is fixedly connected to the lower surface of the buffer table.

[0017] Preferably, an operation method is provided: step 1, when the workpiece needs to be placed on the transfer platform, first control the first servo motor to be energized, drive the transmission gear connected thereto to rotate, and control multiple transmission gears to rotate synchronously through the transmission belt, drive the gear column to rotate, the gear column is engaged with the gear plate, and when the gear column rotates, the transfer platform is driven to slide in the main slide groove, thereby moving the transfer platform as a whole to the processing platform of the workpiece;

[0018] Step 2: Control the hydraulic cylinder to be energized, drive the clamping device to move in the through groove, so that the two connecting columns extend toward the workpiece of the processing platform at the same time. At the same time, control the photoelectric switching switch to start. When the clamping end blocks at the ends of the two connecting columns extend to the outside of the workpiece and the workpiece is framed inside the clamping device, the optical signal of the photoelectric switching switch is connected, and the hydraulic cylinder is controlled to stop.

[0019] The second servo motor is controlled to start, and the two threaded rods are driven to rotate through the pulley. Since the rotation directions of the two threaded rods are opposite, the clamping slide block is driven to slide in the guide slide groove, so that the clamping slide block fits with one end of the workpiece. At the same time, the rotation of the two threaded rods drives the two driving gears to rotate, and the two driving gears are respectively engaged with the first connecting rack and the second connecting rack to drive the two clamping end blocks to slide in the first slide groove of the clamping seat, so that the two clamping end blocks move relative to each other and fit with the other end of the workpiece, so as to limit the two ends of the workpiece;

[0020] Step three, drive the clamping device to move in the direction of the transfer platform through the hydraulic cylinder, and use the shock-absorbing device to dampen and buffer the workpiece in the process of moving the workpiece to the transfer platform, so as to facilitate the movement of the workpiece. When the workpiece moves to the buffer table, the weight of the workpiece falls on the buffer table, squeezing the buffer table. The first telescopic sleeve, the first telescopic rod and the second spring cooperate to perform preliminary damping on the buffer table. As the buffer table descends, the second telescopic sleeve, the second telescopic rod and the third spring cooperate to make the sliding seat slide outward on the support rod, thereby performing the second damping, and squeezing the sliding seat through the first spring to reduce the sliding speed of the sliding seat. Finally, as the workpiece moves upward, it is damped by the fourth spring to prevent the workpiece from hitting and damaging the equipment, until the workpiece is moved to the transfer platform.

[0021] The first servo motor is controlled to reset the transfer platform through the cooperation between the transmission gear and the transmission belt, and the cooperation between the tooth column and the tooth plate, and the workpiece is moved to the next assembly line for processing through the mobile device.

[0022] The beneficial effects of the present invention are:

[0023] 1. By setting up a driving device, the effect of driving the transmission gear to rotate by the first servo motor to rotate the tooth column and then drive the transfer platform to move is achieved. When in use, the first servo motor drives the transmission gear to rotate, and controls multiple transmission gears to rotate synchronously through a transmission belt, driving the tooth column to rotate, and the tooth column is engaged with the tooth plate. When the tooth column rotates, it drives the transfer platform to slide in the main slide, thereby moving the transfer platform as a whole to the processing platform of the workpiece.

[0024] 2. By setting up a clamping device, the two connecting columns are driven by a hydraulic cylinder to move in the direction of the workpiece, and the cooperation between the two driving gears and the first connecting rack and the second connecting rack, and the cooperation between the threaded rod and the clamping slide block are used to clamp the workpiece, thereby improving the transfer efficiency of the transfer equipment. When in use, the hydraulic cylinder drives the connecting column to move, and drives the clamping slide block to move in the guide slot through the rotation of the threaded rod, and drives the two clamping end blocks to make relative movement through the rotation of the driving gear.

[0025] 3. By setting up a shock-absorbing device, the vibration force generated during the movement of the workpiece can be weakened when the workpiece is loaded or unloaded, so as to prevent the workpiece from colliding with the work surface and causing damage to the work surface. When in use, the buffer table is initially shock-absorbed by the cooperation of the first telescopic sleeve, the first telescopic rod and the second spring, and the second telescopic sleeve, the second telescopic rod and the third spring cooperate to make the sliding seat slide outward on the support rod, thereby performing the second step of shock absorption, and the pressure or vibration force of the workpiece acting on the buffer table is shock-absorbed by the fourth spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0027] Figure 2 A three-dimensional diagram of the transfer platform structure of a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0028] Figure 3 A cross-sectional view of an integrated frame structure of a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0029] Figure 4 A cross-sectional view of the transfer platform structure of a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0030] Figure 5 A three-dimensional diagram of the gear column structure of a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0031] Figure 6 A stereoscopic diagram of a clamping device for a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0032] Figure 7 A partial cross-sectional view of a connecting column structure of a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0033] Figure 8 A cross-sectional view of the clamping end block structure of a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0034] Fig. 9 A three-dimensional diagram of the driving gear structure of a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0035] Fig.10 A three-dimensional diagram of a shock absorbing device for a large workpiece transfer device for a production line and an operation method thereof proposed by the present invention;

[0036] Fig.11 A cross-sectional view of a shock absorbing device of a large workpiece transfer device for a production line and an operating method thereof proposed by the present invention;

[0037] Fig.12 A three-dimensional diagram of the shock-absorbing seat structure of a large workpiece transfer device for a production line and an operating method thereof proposed by the present invention.

[0038] In the figure: 1. lifting platform; 2. integrated frame; 3. transfer platform; 31. supporting walking wheel; 4. connecting shaft; 41. tooth column; 42. transmission gear; 43. transmission belt; 44. mounting seat; 404. first mounting seat; 45. first servo motor; 46. tooth plate; 47. first mounting port; 5. connecting column; 51. guide slide groove; 52. threaded rod; 53. clamping slider; 54. clamping seat; 55. first slide groove; 56. clamping end block; 57. driving groove; 58. first connecting rack; 59. second connecting rack ; 510, driving gear; 511, photoelectric beam switch; 512, first connecting seat; 513, through slot; 514, first mounting plate; 515, second servo motor; 516, pulley; 517, hydraulic cylinder; 6, shock-absorbing seat; 61, buffer table; 62, mounting slot; 63, support rod; 64, first spring; 65, sliding seat; 66, first telescopic sleeve; 67, first telescopic rod; 68, second spring; 69, second telescopic sleeve; 610, second telescopic rod; 611, third spring; 612, fourth spring. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Reference Figure 1-12 The lifting platform 1 is provided with an integrated frame 2 for integrated installation of parts, and a transfer platform 3 is installed on the upper surface of the integrated frame 2. In order to support the protruding end of the transfer platform 3 after the transfer platform 3 moves to one end of the processing table, a supporting walking wheel 31 is installed on the lower surface of one end of the transfer platform 3. In order to guide the transfer platform 3 during the movement of the transfer platform 3 and drive the transfer platform 3 to move, a driving device is provided on one side of the integrated frame 2 for driving the transfer platform 3 to reciprocate along the length direction of the main slide groove provided on the integrated frame 2. A clamping device for stably loading or unloading the workpiece placed on the transfer platform 3 is installed on the right end surface of the transfer platform 3, and a shock absorbing device for buffering the impact force on the workpiece during the loading or unloading process is installed on the left end surface of the lifting platform 1.

[0041] like Figure 1-5As shown, in order to control the movement of the transfer platform 3, a driving device is provided, which includes a connecting shaft 4 and a tooth column 41 fixedly sleeved on the outer surface of the connecting shaft 4. In order to control the synchronous rotation of multiple connecting shafts 4, transmission gears 42 are fixedly sleeved on the outer surfaces of both ends of the multiple connecting shafts 4, and the outer surfaces of the multiple transmission gears 42 are connected through a transmission belt 43 with a serrated inner surface. The serrated transmission belt 43 drives the transmission gear 42 to rotate, thereby driving the tooth column 41 to rotate.

[0042] In order to install the first servo motor 45, a mounting seat 44 is fixedly installed on one side of the integrated frame 2. Furthermore, a first servo motor 45 is fixedly installed on the inner wall of the mounting seat 44. In order to enable the first servo motor 45 to drive the gear column 41 to rotate, the main shaft end face of the first servo motor 45 is fixedly connected to one end surface of one of the connecting shafts 4. In order to drive the transfer platform 3 to move by the rotation of the gear column 41, a tooth plate 46 fixedly connected to the lower surface of the transfer platform 3 is provided above the gear column 41, and the transfer platform 3 is driven to move by the engagement of the gear column 41 with the tooth plate 46. Furthermore, in order to install the connecting shaft 4, first mounting openings 47 for installing the connecting shaft 4 are opened on the inner walls on both sides of the integrated frame 2, so that the outer surfaces at both ends of the connecting shaft 4 are connected to the inner wall of the first mounting opening 47 through bearings.

[0043] By setting up a driving device, the first servo motor 45 drives the transmission gear 42 to rotate, so that the tooth column 41 rotates, and then drives the transfer platform 3 to move. When in use, the first servo motor 45 drives the transmission gear 42 to rotate, and controls multiple transmission gears 42 to rotate synchronously through the transmission belt 43, drives the tooth column 41 to rotate, and the tooth column 41 is engaged with the tooth plate 46. When the tooth column 41 rotates, it drives the transfer platform 3 to slide in the main slide groove, so that the transfer platform 3 moves as a whole to the processing platform of the workpiece.

[0044] like Figure 1-9As shown, in order to smoothly load and unload the workpieces that need to be transferred and prevent the workpieces from shaking on the transfer platform 3, a clamping device is provided, which includes two symmetrically distributed connecting columns 5. In order to install the threaded rod 52, guide grooves 51 are provided on the opposite surfaces of the two connecting columns 5, and two threaded rods 52 with opposite thread rotation directions are respectively installed on the inner walls of the two guide grooves 51 through bearings. Further, in order to clamp one end of the workpiece, a clamping slider 53 threadedly connected to the outer surface of the threaded rod 52 is slidably sleeved on the inner wall of the guide groove 51, and the clamping slider 53 is driven to move in the guide groove 51 by the rotation of the threaded rod 52. Further, in order to clamp the other end of the workpiece, a clamping seat 54 is fixedly connected to one end surface of the connecting column 5, and a first groove 55 is transversely provided on the inner wall of the clamping seat 54. Further, a clamping end block 56 is slidably inserted into the inner wall of the first groove 55, and the clamping end block 56 is guided and installed by the first groove 55.

[0045] Furthermore, in order to control the movement of the clamping end block 56, a driving groove 57 is opened on one side surface of the clamping end block 56. Furthermore, a first connecting rack 58 is fixedly connected to the inner bottom wall of one of the driving grooves 57, and a second connecting rack 59 is fixedly connected to the inner top wall of the other driving groove 57. In order to control the movement of the clamping end block 56 by the rotation of the threaded rod 52, the end of the threaded rod 52 passes through the inside of the clamping seat 54 and is fixedly sleeved with a driving gear 510, and the two driving gears 510 are respectively engaged with the first connecting rack 58 and the second connecting rack 59 for transmission, and then the two clamping end blocks 56 are driven to move toward each other through the two driving gears 510 rotating in the same direction and cooperating with the first connecting rack 58 and the second connecting rack 59 respectively. In order to control the hydraulic cylinder 517 to stop and the second servo motor 515 to start after the clamping end block 56 extends over the workpiece, photoelectric counter-shooting switches 511 are installed on the relative surfaces of the two clamping end blocks 56.

[0046] The clamping device also includes a first connecting seat 512 fixed to the upper surface of the transfer platform 3. In order to guide and bear the two connecting columns 5, two symmetrically distributed through grooves 513 are provided on the inner wall of the first connecting seat 512, so that the outer surface of the connecting column 5 is movably connected to the inner wall of the through groove 513. Further, in order to control the synchronous movement of the two connecting columns 5, a first mounting plate 514 is fixedly connected between the two connecting columns 5. Furthermore, a second mounting port for mounting a second servo motor 515 is provided on one side surface of the first mounting plate 514. The second servo motor 515 is installed to drive the two threaded rods 52 to move synchronously. The second servo motor 515 and the threaded rods 52 are rotated in steps, and pulleys 516 are fixedly sleeved on the outer surface of the main shaft of the second servo motor 515 and the outer surface of one end of the two threaded rods 52, so that the three pulleys 516 are connected by belt transmission. Furthermore, in order to drive the clamping device to move laterally, a first mounting seat 404 is fixedly connected to the surface of one end of the transfer platform 3, and a hydraulic cylinder 517 is installed on the upper surface of the first mounting seat 404. The outer surface of the hydraulic rod of the hydraulic cylinder 517 is fixedly connected to the inner wall of the first mounting plate 514, and the first mounting seat 404 is moved by the extension and retraction of the hydraulic cylinder 517, thereby driving the two connecting columns 5 to move in the through groove 513.

[0047] By setting up a clamping device, the hydraulic cylinder 517 drives the two connecting columns 5 to move in the direction of the workpiece, and the cooperation between the two driving gears 510 and the first connecting rack 58 and the second connecting rack 59 and the cooperation between the threaded rod 52 and the clamping slide block 53 achieves the effect of clamping the workpiece. When in use, the hydraulic cylinder 517 drives the connecting column 5 to move, and drives the clamping slide block 53 to move in the guide groove 51 through the rotation of the threaded rod 52, and drives the two clamping end blocks 56 to make relative movement through the rotation of the driving gear 510.

[0048] like Figure 1-3 and Figure 10-12 As shown, in order to prevent the weight of the workpiece from suddenly falling onto the processing platform and hitting the processing platform when the workpiece is loaded or unloaded, a shock absorbing device is provided. The shock absorbing device includes a shock absorbing seat 6 fixed to one end of the transfer platform 3 and a buffer platform 61 arranged above the shock absorbing seat 6. In order to install the shock absorbing component on the front side of the shock absorbing device, a mounting groove 62 is opened on one side surface of the shock absorbing seat 6, and two symmetrically distributed support rods 63 are fixedly installed on the inner wall of the mounting groove 62. Furthermore, a first spring 64 is movably sleeved on the outer surface of the support rod 63, and a sliding seat 65 is slidably sleeved on the outer surface of the support rod 63. The sliding seat 65 is squeezed by the first spring 64, so that the sliding seat 65 is buffered when the sliding seat 65 moves on the support rod 63.

[0049] In order to elastically connect the shock-absorbing seat 6 with the front end of the buffer platform 61, two symmetrically distributed first telescopic sleeves 66 are fixedly connected to the upper surface of the front end of the shock-absorbing seat 6, and a first telescopic rod 67 is movably sleeved on the inner wall of the first telescopic sleeve 66, so that the top of the first telescopic sleeve 66 is fixedly connected to the lower surface of the buffer platform 61, and a second spring 68 for buffering the buffer platform 61 is sleeved on the outer surface of the first telescopic rod 67 located between the first telescopic sleeve 66 and the buffer platform 61. When the buffer platform 61 descends, the buffer platform 61 is buffered by the second spring 68.

[0050] Furthermore, in order to buffer the front end of the buffer platform 61 and the shock absorbing seat 6, two symmetrically distributed second telescopic sleeves 69 are movably hinged on the lower surface of the front end of the buffer platform 61 through a hinge seat, and second telescopic rods 610 are movably sleeved on the inner walls of the two second telescopic sleeves 69, and a third spring 611 is arranged between one end of the second telescopic rod 610 and the inner wall of one end of the second telescopic sleeve 69. When the second telescopic sleeve 69 and the second telescopic rod 610 are telescoped, they are shock-absorbing and buffered by the third spring 611. In order to buffer and connect the shock absorbing seat 6 and the rear end of the buffer platform 61, a plurality of fourth springs 612 distributed in a linear array are fixedly connected to the upper surface of the rear end of the shock absorbing seat 6. Furthermore, the free end of the fourth spring 612 is fixedly connected to the lower surface of the buffer platform 61.

[0051] By setting up a shock-absorbing device, the vibration force generated during the movement of the workpiece can be weakened when the workpiece is loaded or unloaded, thereby preventing the workpiece from colliding with the work surface and causing damage to the work surface. When in use, the buffer table 61 is initially shock-absorbed by the cooperation of the first telescopic sleeve 66, the first telescopic rod 67 and the second spring 68, and the second telescopic sleeve 69, the second telescopic rod 610 and the third spring 611 cooperate to make the sliding seat 65 slide outward on the support rod 63, thereby performing the second shock-absorption, and the pressure or vibration force of the workpiece acting on the buffer table 61 is shock-absorbed by the fourth spring 612.

[0052] Working principle: Step 1, when the workpiece needs to be placed on the transfer platform 3, first control the first servo motor 45 to be energized, drive the transmission gear 42 connected thereto to rotate, and control the multiple transmission gears 42 to rotate synchronously through the transmission belt 43, drive the gear column 41 to rotate, the gear column 41 is engaged with the gear plate 46, and when the gear column 41 rotates, it drives the transfer platform 3 to slide in the main slide, so that the transfer platform 3 is moved as a whole to the processing platform of the workpiece;

[0053] Step 2: Control the hydraulic cylinder 517 to be energized, drive the clamping device to move in the through slot 513, so that the two connecting columns 5 extend toward the workpiece on the processing platform at the same time. At the same time, control the photoelectric switch 511 to start. When the clamping end blocks 56 at the ends of the two connecting columns 5 extend to the outside of the workpiece and frame the workpiece inside the clamping device, the optical signal of the photoelectric switch 511 is connected, and the hydraulic cylinder 517 is controlled to stop.

[0054] The second servo motor 515 is controlled to start, and the two threaded rods 52 are driven to rotate through the pulley 516. Since the two threaded rods 52 rotate in opposite directions, the clamping slider 53 is driven to slide in the guide slot 51, so that the clamping slider 53 fits with one end of the workpiece. At the same time, the rotation of the two threaded rods 52 drives the two driving gears 510 to rotate, and the two driving gears 510 are respectively engaged with the first connecting rack 58 and the second connecting rack 59 to drive the two clamping end blocks 56 to slide in the first slot 55 of the clamping seat 54, so that the two clamping end blocks 56 move relative to each other and fit with the other end of the workpiece, so as to limit the two ends of the workpiece;

[0055] Step three, drive the clamping device to move toward the transfer platform 3 through the hydraulic cylinder 517, and perform shock absorption and buffering on the workpiece through the shock absorbing device in the process of moving the workpiece onto the transfer platform 3, so as to facilitate the movement of the workpiece. When the workpiece moves onto the buffer platform 61, the weight of the workpiece falls on the buffer platform 61, squeezing the buffer platform 61, and the first telescopic sleeve 66, the first telescopic rod 67 and the second spring 68 cooperate to perform preliminary shock absorption on the buffer platform 61. As the buffer platform 61 descends, the second telescopic sleeve 69, the second telescopic rod 610 and the third spring 611 cooperate to make the sliding seat 65 slide outward on the support rod 63, and then perform the second shock absorption, and squeeze the sliding seat 65 through the first spring 64, and reduce the sliding speed of the sliding seat 65. Finally, as the workpiece moves upward, it is shock-absorbed by the fourth spring 612 to prevent the workpiece from hitting and damaging the equipment, until the workpiece is moved to the transfer platform 3;

[0056] The first servo motor 45 is controlled to reset the transfer platform 3 through the cooperation between the transmission gear 42 and the transmission belt 43, and the cooperation between the tooth column 41 and the tooth plate 46, and the workpiece is moved to the next assembly line for processing through the mobile device.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large workpiece transfer device for a production line, comprising a lifting platform (1) with rollers at the bottom, characterized in that: An integrated frame (2) for integrated installation of parts is installed on the upper surface of the lifting platform (1), a transfer platform (3) is installed on the upper surface of the integrated frame (2), a driving device is provided on one side of the integrated frame (2) for driving the transfer platform (3) to reciprocate along the length direction of the main slide slot provided on the integrated frame (2), a clamping device is installed on the right end surface of the transfer platform (3) for smoothly loading or unloading a workpiece placed on the transfer platform (3), and a shock absorbing device is installed on the left end surface of the lifting platform (1) for buffering the impact force on the workpiece during the loading or unloading process; A driving device, the driving device comprising a connecting shaft (4) and a tooth column (41) fixedly sleeved on the outer surface of the connecting shaft (4), a plurality of transmission gears (42) fixedly sleeved on the outer surfaces of both ends of the connecting shaft (4), the outer surfaces of the plurality of transmission gears (42) being transmission-connected via a transmission belt (43) having a sawtooth-shaped inner surface, a tooth plate (46) fixedly connected to the lower surface of the transfer platform (3) being arranged above the tooth column (41), first mounting openings (47) for mounting the connecting shaft (4) being provided on the inner walls of both sides of the integrated frame (2), and the outer surfaces of both ends of the connecting shaft (4) being connected to the inner wall of the first mounting opening (47) via bearings; A clamping device, the clamping device comprising two symmetrically distributed connecting columns (5), the opposite surfaces of the two connecting columns (5) are provided with guide grooves (51), the inner walls of the two guide grooves (51) are respectively provided with two threaded rods (52) with opposite thread rotation directions through bearings, the inner walls of the guide grooves (51) are slidably sleeved with a clamping slider (53) threadedly connected to the outer surface of the threaded rod (52), one end surface of the connecting column (5) is fixedly connected with a clamping seat (54), the inner wall of the clamping seat (54) is transversely provided with a first groove (55), the inner wall of the first groove (55) is slidably inserted with a clamping end A block (56), a driving groove (57) is provided on one side surface of the clamping end block (56), wherein the inner bottom wall of one of the driving grooves (57) is fixedly connected to a first connecting rack (58), and the inner top wall of the other driving groove (57) is fixedly connected to a second connecting rack (59), the end of the threaded rod (52) penetrates into the interior of the clamping seat (54) and is fixedly sleeved with a driving gear (510), the two driving gears (510) are respectively meshed with the first connecting rack (58) and the second connecting rack (59) for transmission, and the opposite surfaces of the two clamping end blocks (56) are both installed with a photoelectric counter-shooting switch (511); A shock absorbing device, the shock absorbing device comprising a shock absorbing seat (6) fixed to one end of the transfer platform (3) and a buffer platform (61) arranged above the shock absorbing seat (6); a mounting groove (62) is provided on one side surface of the shock absorbing seat (6); two symmetrically distributed support rods (63) are fixedly installed on the inner wall of the mounting groove (62); the outer surface of the support rod (63) is movably sleeved with a first spring (64); the outer surface of the support rod (63) is slidably sleeved with a sliding seat (65); the front end upper surface of the shock absorbing seat (6) is fixedly connected with two symmetrically distributed first telescopic sleeves (66); the inner wall of the first telescopic sleeve (66) is movably sleeved with a first telescopic rod (67); the top of the first telescopic sleeve (66) is fixedly connected to the lower surface of the buffer platform (61); The outer surface of the first telescopic rod (67) located between the first telescopic sleeve (66) and the buffer platform (61) is sleeved with a second spring (68) for buffering the buffer platform (61); the lower surface of the front end of the buffer platform (61) is movably hinged to two symmetrically distributed second telescopic sleeves (69) through a hinge seat; the inner walls of the two second telescopic sleeves (69) are both movably sleeved with a second telescopic rod (610); a third spring (611) is arranged between one end of the second telescopic rod (610) and the inner wall of one end of the second telescopic sleeve (69); a plurality of fourth springs (612) distributed in a linear array are fixedly connected to the upper surface of the rear end of the shock absorbing seat (6); and the free ends of the fourth springs (612) are fixedly connected to the lower surface of the buffer platform (61).

2. The large workpiece transfer equipment for a production line according to claim 1, characterized in that: A mounting seat (44) is fixedly mounted on one side of the integrated frame (2), a first servo motor (45) is fixedly mounted on the inner wall of the mounting seat (44), and a main shaft end surface of the first servo motor (45) is fixedly connected to an end surface of one of the connecting shafts (4).

3. The large workpiece transfer equipment for a production line according to claim 1, characterized in that: The clamping device also includes a first connecting seat (512) fixed to the upper surface of the transfer platform (3), the inner wall of the first connecting seat (512) is provided with two symmetrically distributed through grooves (513), the outer surface of the connecting column (5) is movably sleeved with the inner wall of the through groove (513), and a first mounting plate (514) is fixedly connected between the two connecting columns (5).

4. The large workpiece transfer equipment for a production line according to claim 3, characterized in that: A second mounting opening for mounting a second servo motor (515) is provided on one side surface of the first mounting plate (514), and a pulley (516) is fixedly sleeved on the outer surface of the main shaft of the second servo motor (515) and the outer surface of one end of the two threaded rods (52), and the three pulleys (516) are connected via a belt drive.

5. The large workpiece transfer equipment for a production line according to claim 4, characterized in that: A first mounting seat (404) is fixedly connected to one end surface of the transfer platform (3), a hydraulic cylinder (517) is mounted on the upper surface of the first mounting seat (404), and an outer surface of a hydraulic rod of the hydraulic cylinder (517) is fixedly connected to an inner wall of the first mounting plate (514).

6. According to claim 5, a method for operating a large workpiece transfer device for a production line, the method for operating the device is as follows: Step 1, when the workpiece needs to be placed on the transfer platform (3), firstly, the first servo motor (45) is controlled to be energized, driving the transmission gear (42) connected thereto to rotate, and the transmission belt (43) is used to control multiple transmission gears (42) to rotate synchronously, driving the gear column (41) to rotate, the gear column (41) is meshed with the gear plate (46), and while the gear column (41) rotates, the transfer platform (3) is driven to slide in the main slide groove, thereby moving the transfer platform (3) as a whole to the processing platform of the workpiece; Step 2: Control the hydraulic cylinder (517) to be energized, drive the clamping device to move in the through slot (513), so that the two connecting columns (5) extend toward the workpiece on the processing platform at the same time, and at the same time, control the photoelectric beam switch (511) to start, and when the clamping end blocks (56) at the ends of the two connecting columns (5) extend to the outside of the workpiece and frame the workpiece inside the clamping device, the optical signal of the photoelectric beam switch (511) is connected, and the hydraulic cylinder (517) is controlled to stop; The second servo motor (515) is controlled to start, and the two threaded rods (52) are driven to rotate through the pulley (516). Since the two threaded rods (52) rotate in opposite directions, the clamping slider (53) is driven to slide in the guide slot (51), so that the clamping slider (53) fits with one end of the workpiece. At the same time, the rotation of the two threaded rods (52) drives the two driving gears (510) to rotate. The two driving gears (510) are respectively engaged with the first connecting rack (58) and the second connecting rack (59), so that the two clamping end blocks (56) are driven to slide in the first slot (55) of the clamping seat (54), so that the two clamping end blocks (56) move relative to each other and fit with the other end of the workpiece, thereby limiting the two ends of the workpiece; Step 3: The clamping device is driven by the hydraulic cylinder (517) to move in the direction of the transfer platform (3). When the workpiece is moved onto the transfer platform (3), the shock absorbing device is used to absorb and buffer the workpiece, so as to facilitate the movement of the workpiece. When the workpiece moves onto the buffer platform (61), the weight of the workpiece falls on the buffer platform (61), squeezing the buffer platform (61). The first telescopic sleeve (66), the first telescopic rod (67) and the second spring (68) cooperate to initially absorb the shock of the buffer platform (61). As the buffer moves onto the buffer platform (61), the weight of the workpiece falls on the buffer platform (61), squeezing the buffer platform (61). As the platform (61) descends, the second telescopic sleeve (69), the second telescopic rod (610) and the third spring (611) cooperate to make the sliding seat (65) slide outward on the support rod (63), thereby performing a second step of shock absorption, and squeezing the sliding seat (65) through the first spring (64) to reduce the sliding speed of the sliding seat (65). Finally, as the workpiece moves upward, the fourth spring (612) is used to reduce shock to prevent the workpiece from impacting and damaging the equipment, until the workpiece is moved onto the transfer platform (3); The first servo motor (45) is controlled to reset the transfer platform (3) through the cooperation between the transmission gear (42) and the transmission belt (43), and the cooperation between the tooth column (41) and the tooth plate (46), and the workpiece is moved to the next assembly line for processing through the mobile device.

Images