A piston connecting rod automatic unscrewing and breaking station

Abstract

The application provides a piston connecting rod automatic unscrewing and breaking work station, and relates to the technical field of intelligent manufacturing.The piston connecting rod automatic unscrewing and breaking work station places the tray and the piston connecting rod thereon on the supporting disc of the supporting unit through the carrying unit, the connecting rod part of the piston connecting rod is abutted and blocked by the connecting rod limiting piece, the connecting rod part of the piston connecting rod is pressed by the pressing block of the pressing unit, the bolt on the piston connecting rod is unscrewed by the pair of unscrewing guns of the unscrewing unit, the lower end of the supporting disc is abutted and lifted by the abutting seat and the jacking seat of the breaking unit, the breaking head is located between the connecting rod part and the connecting rod cover part of the piston connecting rod, the connecting rod cover part is broken by the breaking head, and the piston connecting rod after the unscrewing and breaking is completed is carried by the carrying unit to the tray placing table.The whole process is realized automatically, the labor intensity of the workers is reduced, and the work efficiency and the work precision are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of intelligent manufacturing technology, specifically to an automatic piston connecting rod loosening and fracture workstation. Background Technology

[0002] In automated engine assembly lines, it's necessary to loosen the bolts on the piston connecting rod and then pry open the connecting rod cap relative to the connecting rod to allow for breakage, facilitating the placement of the connecting rod bearing between the connecting rod and the connecting rod cap. Currently, this is typically done manually by handling the piston connecting rod, loosening the bolts using a loosening tool, and then using a prying tool to pry open the connecting rod cap relative to the connecting rod for breakage. This process involves a large number of personnel, high manual labor intensity, low work precision, and low efficiency, ultimately reducing the overall efficiency of the engine production line. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic piston connecting rod loosening and breaking workstation to automatically loosen the bolts on the piston connecting rod and to expand and break the connecting rod cap relative to the connecting rod.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] An automatic piston connecting rod loosening and fracture workstation includes a transport unit, a support unit, a pressing unit, a loosening unit, and a fracture unit;

[0006] The handling unit includes a six-axis robot and a handling fixture. The handling fixture is installed at the end of the six-axis robot. The handling fixture is used to hold the pallet and the piston rod on it. The six-axis robot is used to drive the handling fixture to transfer the pallet and the piston rod on it to the support plate.

[0007] The supporting unit includes a first support frame, a support plate, a tray, and a connecting rod limiting member. The support plate is disposed on the first support frame, and a plurality of trays are placed on the support plate. The connecting rod limiting member is disposed on the tray. The connecting rod limiting member is used to abut against and block the connecting rod portion of the piston connecting rod. A first through hole is provided on the support plate to allow the expansion head to pass through, and a second through hole is provided on the tray to allow the expansion head to pass through. The second through hole corresponds to the position of the first through hole.

[0008] The pressing unit includes a gantry, a pressing cylinder, and a pressing block. The cylinder body of the pressing cylinder is mounted on the gantry. The pressing cylinder is arranged in a vertical direction. The telescopic rod of the pressing cylinder is mounted on the pressing block. The pressing block is used to press against the connecting rod portion of the piston connecting rod.

[0009] The loosening unit includes a second support frame and a pair of loosening guns mounted on the second support frame. The loosening guns are used to loosen the bolts on the piston connecting rod.

[0010] The fracture breaking unit includes a base, a lifting mechanism, a lifting seat, a fracture breaking cylinder, a fracture breaking head, a fracture breaking slide rail, a fracture breaking slider, and a limiter. The base is mounted on the first support frame. The base is connected to the lifting seat via the lifting mechanism. The lifting mechanism is used to drive the lifting seat to rise and fall vertically. The fracture breaking cylinder is mounted on the lifting seat. The telescopic rod of the fracture breaking cylinder is connected to the fracture breaking head. The fracture breaking slide rail is mounted on the lifting seat. The fracture breaking slide rail extends horizontally. The fracture breaking slider slides in cooperation with the fracture breaking slide rail. The lower end of the fracture breaking head is mounted on the fracture breaking slider. The limiter is located on the opposite side of the sliding stroke of the fracture breaking head. The fracture breaking head is used to abut against the connecting rod cover of the piston connecting rod.

[0011] Preferably, the loosening unit further includes a first support base, a first drive mechanism, a second support base, a second drive mechanism, a third left support base, a third right support base, and a third drive mechanism;

[0012] The second support frame is provided with a first slide rail, which extends horizontally; the first support base is provided with a first slider, which slides in conjunction with the first slide rail; the first drive mechanism is used to drive the first slider to slide relative to the first slide rail.

[0013] The first support base is provided with a second slide rail, which extends along a horizontal longitudinal direction; the second support base is provided with a second slider, which slides in conjunction with the second slide rail; the second driving mechanism is used to drive the second slider to slide relative to the second slide rail.

[0014] The second support base is provided with a third slide rail, which extends horizontally; the third left support base is provided with a third left slider, which slides in conjunction with the left side of the third slide rail; the third right support base is provided with a third right slider, which slides in conjunction with the right side of the third slide rail; the third driving mechanism is used to drive the third left slider and the third right slider to slide relative to the third slide rail, and to drive the third left slider and the third right slider to move closer to or further away from each other;

[0015] The loosening gun is provided on both the third left support and the third right support, and the loosening gun is arranged to extend longitudinally.

[0016] Preferably, the first drive mechanism includes a first servo motor, a first lead screw, and a first lead screw nut. The first servo motor is mounted on the second support frame, the output shaft of the first servo motor is connected to the first lead screw, and the first lead screw nut is mounted on the first support base, cooperating with the first lead screw.

[0017] Preferably, the second drive mechanism includes a second servo motor, a second lead screw, and a second lead screw nut. The second servo motor is mounted on the first support base, and the output shaft of the second servo motor is connected to the second lead screw. The second lead screw nut is mounted on the second support base and cooperates with the second lead screw.

[0018] Preferably, the third drive mechanism includes a third servo motor, a bidirectional lead screw, a third left lead screw nut, and a third right lead screw nut. The third servo motor is mounted on the second support base, and the output shaft of the third servo motor is connected to the bidirectional lead screw. The left and right sides of the bidirectional lead screw have opposite rotation directions. The third left lead screw nut is mounted on the third left support base, and the third right lead screw nut is mounted on the third right support base. The third left lead screw nut engages with the left side of the bidirectional lead screw, and the third right lead screw nut engages with the right side of the bidirectional lead screw.

[0019] Preferably, the support unit further includes a slewing bearing, a gear ring, a fourth servo motor, and a drive gear. The first support frame is assembled and connected to the fixed end of the slewing bearing, the rotating end of the slewing bearing is assembled and connected to the support disk, the rotating end of the slewing bearing is provided with the gear ring, the first support frame is provided with the fourth servo motor, the output shaft of the fourth servo motor is connected to the drive gear, and the drive gear meshes with the gear ring.

[0020] Preferably, the lifting mechanism includes a lifting cylinder, a guide shaft, and a guide sleeve. A telescopic rod of the lifting cylinder is mounted on the base. The lifting cylinder is arranged vertically. The cylinder body of the lifting cylinder is mounted on the lower end of the guide shaft, which is also arranged vertically. The guide sleeve is provided on the base. The guide shaft is slidably fitted with the guide sleeve. The upper end of the guide shaft is mounted on the lifting seat.

[0021] Preferably, the fracture breaking unit further includes an abutment seat and a telescopic slide rod. The abutment seat is located above the lifting seat. The fixed end of the telescopic slide rod is connected to the lifting seat, and the telescopic end of the telescopic slide rod is connected to the abutment seat. The abutment seat is used to abut against the support plate. The abutment seat has a third through hole corresponding to the position of the fracture breaking head, allowing the fracture breaking head to pass through. The third through hole corresponds to the position of the second through hole.

[0022] Preferably, the upper end of the abutment seat is provided with abutment blocks on both sides of the third through hole, and a dust suction hole is opened on the abutment block near the third through hole. A dust suction connector is provided on the abutment block and communicates with the dust suction hole. The dust suction connector is used to connect a dust suction device.

[0023] Preferably, it also includes a tray placement platform for placing the tray and the piston rod thereon.

[0024] The beneficial technical effects of this invention are:

[0025] The automatic piston connecting rod loosening and breaking workstation of the present invention transports a pallet and its piston connecting rod from the pallet placement platform to the support plate of the support unit via a transport unit. A connecting rod limiting member abuts and blocks the connecting rod portion of the piston connecting rod. A pressing block of the pressing unit presses down on the connecting rod portion of the piston connecting rod. A pair of loosening guns of the loosening unit loosen the bolts on the piston connecting rod. The breaking unit's abutment seat rises along with the lifting seat and abuts against the lower end of the support plate. The lifting seat drives the breaking head through three through holes, positioning the breaking head between the connecting rod portion and the connecting rod cap portion of the piston connecting rod. The breaking head moves the connecting rod cap portion away from the connecting rod portion, thus breaking the connecting rod cap portion relative to the connecting rod portion. The transport unit then transports the pallet and its loosened and broken piston connecting rod from the support unit to the pallet placement platform. The entire process is automated, reducing the labor intensity of operators and greatly improving work efficiency and accuracy. Attached Figure Description

[0026] Figure 1 This is a perspective view of the piston connecting rod automatic loosening and fracture workstation in an embodiment of the present invention;

[0027] Figure 2 This is a perspective view of the support unit and the fracture unit in an embodiment of the present invention;

[0028] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 4 This is a perspective view of the fracture unit in an embodiment of the present invention;

[0030] Figure 5 This is a front view of the fracture unit in an embodiment of the present invention;

[0031] Figure 6 for Figure 5 BB section view;

[0032] Figure 7 This is a top view of the fracture unit in an embodiment of the present invention;

[0033] Figure 8 for Figure 7 CC section view;

[0034] Figure 9 This is a side view of the fracture unit in an embodiment of the present invention;

[0035] Figure 10This is a perspective view of the pressing unit in an embodiment of the present invention;

[0036] Figure 11 This is a perspective view of the loosening unit in an embodiment of the present invention;

[0037] Figure 12 This is a perspective view of the main structure of the loosening unit in an embodiment of the present invention;

[0038] Figure 13 This is a front view of the main structure of the loosening unit in an embodiment of the present invention;

[0039] Figure 14 This is a top view of the main structure of the loosening unit in an embodiment of the present invention;

[0040] Figure 15 This is a left view of the main structure of the loosening unit in an embodiment of the present invention;

[0041] Figure 16 This is a right view of the main structure of the loosening unit in an embodiment of the present invention. Detailed Implementation

[0042] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. Certain embodiments of the invention will be described more fully below with reference to the accompanying drawings, and some, but not all, of these embodiments will be shown. In fact, various embodiments of the invention can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to enable the invention to meet applicable legal requirements.

[0043] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," "lower," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In this embodiment of the invention, an automatic piston connecting rod loosening and fracture prevention workstation is provided. Please refer to [reference needed]. Figures 1 to 16 As shown.

[0045] An automatic piston connecting rod loosening and breaking workstation includes a transport unit 1, a support unit 2, a pressing unit 3, a loosening unit 4, a breaking unit 5, and a pallet placement platform 6.

[0046] The handling unit 1 includes a six-axis robot 11 and a handling fixture 12. The handling fixture 12 is located at the end of the six-axis robot 11, and is moved by the six-axis robot 11 to various positions in space. The handling fixture 12 is used to grip the pallet 23 and its piston rod 7. The six-axis robot 11 moves the handling fixture 12 to transfer the pallet 23 and its piston rod 7 from the pallet placement platform 6 to the support plate. The six-axis robot 11 also moves the handling fixture 12 to transport the pallet 23 and its loosened and broken piston rod 7 from the supporting unit to the pallet placement platform 6. The pallet placement platform 6 is used to place the pallet 23 and its piston rod 7.

[0047] The supporting unit 2 includes a first support frame 21, a support plate 22, a tray 23, and a connecting rod limiting member 231. The support plate 22 is mounted on the first support frame 21, and three trays 23 are placed on the support plate 22. The connecting rod limiting member 231 is mounted on the tray 23. After the piston connecting rod 7 is placed on the tray 23, the connecting rod limiting member 231 abuts against and blocks the connecting rod portion 71 of the piston connecting rod 7. The support plate 22 has a first through hole that allows the break-off head 541 to pass through, and the tray 23 has a second through hole that allows the break-off head 541 to pass through. The second through hole corresponds to the position of the first through hole.

[0048] The support unit 2 also includes a slewing bearing 24, a gear ring, a fourth servo motor 25, and a drive gear. The fixed end of the slewing bearing 24 is mounted and connected to the middle position of the first support frame 21, and the rotating end of the slewing bearing 24 is mounted and connected to the support plate 22. The rotating end of the slewing bearing 24 is provided with a gear ring. The fourth servo motor 25 is mounted on the first support frame 21, and the output shaft of the fourth servo motor 25 is connected to the drive gear, which meshes with the gear ring. The output shaft of the fourth servo motor 25 rotates to drive the drive gear to rotate, which in turn drives the gear ring to rotate, causing the rotating end of the slewing bearing 24 to rotate relative to the fixed end, and causing the support plate 22 to rotate relative to the first support frame 21. In this way, during the rotation of the support plate 22, the tray 23 is selectively rotated to one side of the pressing unit 3, the loosening unit 4, and the breaking unit 5.

[0049] The pressing unit 3 includes a gantry 31, a pressing cylinder 32, and a pressing block 33. The cylinder bodies of three pressing cylinders 32 are mounted and connected on the crossbeam of the gantry 31. The pressing cylinders 32 are arranged in a vertical direction. The telescopic rods of the pressing cylinders 32 are mounted and connected to the pressing block 33. The pressing block 33 is used to press against the connecting rod portion 71 of the piston connecting rod 7.

[0050] The loosening unit 4 includes a second support frame 41 and a pair of loosening guns 43 disposed on the second support frame 41. The loosening guns 43 are used to loosen the bolts 72 on the piston connecting rod 7.

[0051] The loosening unit 4 also includes a first support base 421, a first drive mechanism, a second support base 422, a second drive mechanism, a third left support base 4231, a third right support base 4232, and a third drive mechanism.

[0052] The second support frame 41 is provided with a first slide rail 441, which extends horizontally; the lower end of the first support base 421 is provided with a first slider 451, which slides in conjunction with the first slide rail 441; the first drive mechanism is used to drive the first slider 451 to slide relative to the first slide rail 441.

[0053] The first drive mechanism includes a first servo motor 461, a first lead screw 462, and a first lead screw nut. The first servo motor 461 is mounted on the second support frame 41. The output shaft of the first servo motor 461 is connected to the first lead screw 462 via a coupling. The first lead screw nut is located at the lower end of the first support base 421 and engages with the first lead screw 462. The rotation of the output shaft of the first servo motor 461 drives the first lead screw 462 to rotate, causing the first lead screw nut to move along the first lead screw 462, thereby driving the first slider 451 to slide relative to the first slide rail 441.

[0054] A second slide rail 442 is provided on the first support base 421, and the second slide rail 442 extends along the horizontal longitudinal direction; a second slider 452 is provided on the second support base 422, and the second slider 452 slides in conjunction with the second slide rail 442; a second driving mechanism is used to drive the second slider 452 to slide relative to the second slide rail 442.

[0055] The second drive mechanism includes a second servo motor 471, a second lead screw 472, and a second lead screw nut 473. The second servo motor 471 is mounted on a first support base 421. The output shaft of the second servo motor 471 is connected to the second lead screw 472 via a coupling. The second lead screw nut 473 is mounted on the second support base 422 and engages with the second lead screw 472. The rotation of the output shaft of the second servo motor 471 drives the second lead screw 472 to rotate, causing the second lead screw nut 473 to move along the second lead screw 472, thereby driving the second slider 452 to slide relative to the second slide rail 442.

[0056] The second support 422 is provided with a third slide rail 443, which extends horizontally. The third left support 4231 is provided with a third left slider 4531, which slides in conjunction with the left side of the third slide rail 443. The third right support 4232 is provided with a third right slider 4532, which slides in conjunction with the right side of the third slide rail 443. The third drive mechanism is used to drive the third left slider 4531 and the third right slider 4532 to slide relative to the third slide rail 443, and to drive the third left slider 4531 and the third right slider 4532 to move closer to or further away from each other.

[0057] The third drive mechanism includes a third servo motor 481, a bidirectional lead screw 482, a third left lead screw nut 4831, and a third right lead screw nut 4832. The third servo motor 481 is mounted on the second support base 422. The output shaft of the third servo motor 481 is connected to the bidirectional lead screw 482 via a coupling. The left and right sides of the bidirectional lead screw 482 have opposite rotation directions. The third left lead screw nut 4831 is mounted on the third left support base 4231, and the third right lead screw nut 4832 is mounted on the third right support base 4232. The third left lead screw nut 4831 engages with the left side of the bidirectional lead screw 482, and the third right lead screw nut 4832 engages with the right side of the bidirectional lead screw 482. The output shaft of the third servo motor 481 rotates to drive the bidirectional lead screw 482 to rotate. The third left lead screw nut 4831 and the third right lead screw nut 4832 move closer to or further away from each other along the bidirectional lead screw 482, thereby driving the third left slider 4531 and the third right slider 4532 to slide relative to the third slide rail 443, and driving the third left slider 4531 and the third right slider 4532 to move closer to or further away from each other.

[0058] Both the third left support 4231 and the third right support 4232 are equipped with loosening guns 43, which extend longitudinally. The loosening guns 43 are electrically operated.

[0059] The end of the loosening gun 43 is detachably connected to a sleeve 431, which engages with the bolt on the piston rod via the sleeve 431. A sleeve replacement mechanism 411 is provided on the second support frame 41, which is used to replace the sleeve 431 for the loosening gun 43.

[0060] Three first proximity sensors 491 are arranged at intervals along the direction of the second slide rail 442 on the first support base 421. The second support base 422 is provided with a first sensing element 4221 for being sensed by the first proximity sensors 491. During the longitudinal movement of the second support base 422 relative to the first support base 421 driven by the second drive mechanism, the first sensing element 4221 is sensed by the three first proximity sensors 491 to determine the extreme positions and the intermediate position of the movement of the second support base 422 relative to the first support base 421.

[0061] A second proximity sensor 492 is provided on the second support 422 at the left, middle, and right positions along the direction of the third slide rail 443. A second left sensing element is provided on the third left support 4231 for sensing by the second proximity sensors 492, and a second right sensing element is provided on the third right support 4232 for sensing by the second proximity sensors 492. During the process of the third left support 4231 and the third right support 4232 moving closer or further apart by the third drive mechanism, the second proximity sensors 492 sense the second left and second right sensing elements to determine the extreme positions and the middle position of the third left support 4231 and the third right support 4232 relative to the second support 422.

[0062] The first drive mechanism drives the first support base 421 to move horizontally relative to the second support frame 41, so as to move the loosening gun 43 to the position aligned with the piston rod 7; the second drive mechanism drives the second support base 422 to move longitudinally relative to the first support base 421, so as to bring the loosening gun 43 close to the piston rod and determine the feed displacement of the loosening gun 43; the third drive mechanism drives the third left support base 4231 and the third right support base 4232 to move closer or further away from each other, so as to adjust the spacing between the two loosening guns 43 according to the spacing of the bolts 72 of the piston rod 7 of different specifications, so as to adapt to the piston rod 7 of different specifications; the bolts 72 on the piston rod 7 are loosened by the loosening gun 43.

[0063] The fracture break unit 5 includes a base 51, a lifting cylinder 521, a guide shaft 522, a guide sleeve 523, a lifting seat 53, a fracture break cylinder 54, a fracture break head 541, a fracture break slide rail 551, a fracture break slider 552, a limiter 56, a telescopic slide rod 57, and an abutment seat 58.

[0064] A base 51 is mounted on a first support frame 21. A telescopic rod connecting to a lifting cylinder 521 is mounted on the base 51. The lifting cylinder 521 is arranged vertically. The cylinder body of the lifting cylinder 521 is connected to the lower end of a guide shaft 522 via a transition rod. The guide shaft 522 is also arranged vertically. A guide sleeve 523 is mounted on the base 51, and the guide shaft 522 slidably engages with the guide sleeve 523. A lifting seat 53 is mounted on the upper end of the guide shaft 522. The telescopic rod of the lifting cylinder 521 extends and retracts relative to the cylinder body, causing the cylinder body of the lifting cylinder 521 to move vertically, which in turn causes the guide shaft 522 to move up and down relative to the guide sleeve 523, thereby driving the lifting seat 53 to move vertically via the guide shaft 522.

[0065] A break-off cylinder 54 is installed on the lifting seat 53. The telescopic rod of the break-off cylinder 54 is connected to the break-off head 541. A break-off slide rail 551 is installed on the lifting seat 53, extending horizontally. The break-off slider 552 slides in cooperation with the break-off slide rail 551. The lower end of the break-off head 541 is located on the break-off slider 552. A limiter 56 is located on the opposite side of the sliding stroke of the break-off head 541. The break-off head 541 is used to abut against the connecting rod cap 73 of the piston connecting rod 7. A pad 542, made of copper, is provided on the side of the break-off head 541 facing the connecting rod cap 73 to prevent damage to the connecting rod cap 73 when it is opened relative to the connecting rod portion 71 for breakage.

[0066] After the lifting seat 53 raises the expansion head 541 on it, the expansion head 541 extends between the connecting rod portion 71 and the connecting rod cover portion 73 of the piston connecting rod 7. The telescopic rod of the expansion cylinder 54 extends relative to the cylinder body, and the expansion slider 552 slides along the expansion slide rail 551 to drive the expansion head 541 to move the connecting rod cover portion 73 away from the connecting rod portion 71, thereby expanding and breaking the connecting rod cover portion 73 relative to the connecting rod portion 71.

[0067] The abutment seat 58 is located above the lifting seat 53. The fixed end of the telescopic slide rod 57 is connected to the lifting seat 53, and the telescopic end of the telescopic slide rod 57 is connected to the abutment seat 58. The abutment seat 58 is used to abut against the support plate 22. The abutment seat 58 has a third through hole corresponding to the position of the expansion head 541, allowing the expansion head 541 to pass through. The third through hole corresponds to the position of the second through hole. By abutting against the support plate 22 through the abutment seat 58, stable clamping of the connecting rod portion 71 of the piston connecting rod 7 is achieved under the joint action of the pressing unit 3.

[0068] Abutment blocks 59 are provided on both sides of the third through hole at the upper end of the abutment seat 58. A dust suction hole 591 is provided on the abutment block 59 near the third through hole. A dust suction connector 592 communicating with the dust suction hole 591 is provided on the abutment block 59, and the dust suction connector 592 is used to connect to a dust collection device. Thus, metal powder and other particles generated during the expansion and breakage of the connecting rod cover 73 relative to the connecting rod 71 are sucked away by the dust collection device through the dust suction hole 591 and the dust suction connector 592. Furthermore, the abutment blocks 59 are made of nylon to cushion the contact between the abutment seat 58 and the support plate 22 when the abutment seat 58 rises.

[0069] The present invention has been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the automatic piston connecting rod loosening and breaking workstation of the present invention. The automatic piston connecting rod loosening and breaking workstation of the present invention uses a transport unit 1 to transport the tray 23 and the piston connecting rod 7 on the tray placement platform 6 to the support plate 22 of the support unit 2. The connecting rod limiting member 231 abuts against and blocks the connecting rod portion 71 of the piston connecting rod 7. The pressing block 33 of the pressing unit 3 presses against the connecting rod portion 71 of the piston connecting rod 7. The bolts 72 on the piston connecting rod 7 are loosened by a pair of loosening guns 43 of the loosening unit 4. The abutment seat 58 of the breaking unit 5 rises along with the lifting seat 53 and abuts against the lower end of the support plate 22. 53 drives the expansion head 541 through the three through holes, so that the expansion head 541 is located between the connecting rod part 71 and the connecting rod cover part 73 of the piston connecting rod 7. The expansion head 541 drives the connecting rod cover part 73 to move away from the connecting rod part 71, so as to expand and break the connecting rod cover part 73 relative to the connecting rod part 71. The transport unit 1 then transports the tray 23 at the support unit 2 and the piston connecting rod 7 that has been loosened and broken on it to the tray placement platform 6. The entire process described above is automated, which reduces the labor intensity of the operators and greatly improves the work efficiency and work accuracy.

[0070] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic piston connecting rod loosening and fracture workstation, characterized in that: Includes a handling unit, a supporting unit, a pressing unit, a loosening unit, and a breaking unit; The handling unit includes a six-axis robot and a handling fixture. The handling fixture is installed at the end of the six-axis robot. The handling fixture is used to hold the pallet and the piston rod on it. The six-axis robot is used to drive the handling fixture to transfer the pallet and the piston rod on it to the support plate. The supporting unit includes a first support frame, a support plate, a tray, and a connecting rod limiting member. The support plate is disposed on the first support frame, and a plurality of trays are placed on the support plate. The connecting rod limiting member is disposed on the tray. The connecting rod limiting member is used to abut against and block the connecting rod portion of the piston connecting rod. A first through hole is provided on the support plate to allow the expansion head to pass through, and a second through hole is provided on the tray to allow the expansion head to pass through. The second through hole corresponds to the position of the first through hole. The pressing unit includes a gantry, a pressing cylinder, and a pressing block. The cylinder body of the pressing cylinder is mounted on the gantry. The pressing cylinder is arranged in a vertical direction. The telescopic rod of the pressing cylinder is mounted on the pressing block. The pressing block is used to press against the connecting rod portion of the piston connecting rod. The loosening unit includes a second support frame and a pair of loosening guns mounted on the second support frame. The loosening guns are used to loosen the bolts on the piston connecting rod. The fracture breaking unit includes a base, a lifting mechanism, a lifting seat, a fracture breaking cylinder, a fracture breaking head, a fracture breaking slide rail, a fracture breaking slider, and a limiter. The base is mounted on the first support frame. The base is connected to the lifting seat via the lifting mechanism. The lifting mechanism is used to drive the lifting seat to rise and fall vertically. The fracture breaking cylinder is mounted on the lifting seat. The telescopic rod of the fracture breaking cylinder is connected to the fracture breaking head. The fracture breaking slide rail is mounted on the lifting seat. The fracture breaking slide rail extends horizontally. The fracture breaking slider slides in cooperation with the fracture breaking slide rail. The lower end of the fracture breaking head is mounted on the fracture breaking slider. The limiter is located on the opposite side of the sliding stroke of the fracture breaking head. The fracture breaking head is used to abut against the connecting rod cover of the piston connecting rod.

2. The piston connecting rod automatic loosening and fracture workstation according to claim 1, characterized in that: The loosening unit further includes a first support base, a first drive mechanism, a second support base, a second drive mechanism, a third left support base, a third right support base, and a third drive mechanism; The second support frame is provided with a first slide rail, which extends horizontally; the first support base is provided with a first slider, which slides in conjunction with the first slide rail; the first drive mechanism is used to drive the first slider to slide relative to the first slide rail. The first support base is provided with a second slide rail, which extends along a horizontal longitudinal direction; the second support base is provided with a second slider, which slides in conjunction with the second slide rail; the second driving mechanism is used to drive the second slider to slide relative to the second slide rail. The second support base is provided with a third slide rail, which extends horizontally; the third left support base is provided with a third left slider, which slides in conjunction with the left side of the third slide rail; the third right support base is provided with a third right slider, which slides in conjunction with the right side of the third slide rail; the third driving mechanism is used to drive the third left slider and the third right slider to slide relative to the third slide rail, and to drive the third left slider and the third right slider to move closer to or further away from each other; The loosening gun is provided on both the third left support and the third right support, and the loosening gun is arranged to extend longitudinally.

3. The piston connecting rod automatic loosening and fracture workstation according to claim 2, characterized in that: The first drive mechanism includes a first servo motor, a first lead screw, and a first lead screw nut. The first servo motor is mounted on the second support frame, and the output shaft of the first servo motor is connected to the first lead screw. The first lead screw nut is mounted on the first support base and cooperates with the first lead screw.

4. The piston connecting rod automatic loosening and fracture workstation according to claim 2, characterized in that: The second drive mechanism includes a second servo motor, a second lead screw, and a second lead screw nut. The second servo motor is mounted on the first support base, and the output shaft of the second servo motor is connected to the second lead screw. The second lead screw nut is mounted on the second support base and cooperates with the second lead screw.

5. The piston connecting rod automatic loosening and fracture workstation according to claim 2, characterized in that: The third drive mechanism includes a third servo motor, a bidirectional lead screw, a third left lead screw nut, and a third right lead screw nut. The third servo motor is mounted on the second support base, and the output shaft of the third servo motor is connected to the bidirectional lead screw. The left and right sides of the bidirectional lead screw rotate in opposite directions. The third left lead screw nut is mounted on the third left support base, and the third right lead screw nut is mounted on the third right support base. The third left lead screw nut engages with the left side of the bidirectional lead screw, and the third right lead screw nut engages with the right side of the bidirectional lead screw.

6. The piston connecting rod automatic loosening and fracture workstation according to claim 1, characterized in that: The support unit further includes a slewing bearing, a gear ring, a fourth servo motor, and a drive gear. The first support frame is assembled and connected to the fixed end of the slewing bearing, the rotating end of the slewing bearing is assembled and connected to the support disk, the rotating end of the slewing bearing is provided with the gear ring, the fourth servo motor is provided on the first support frame, the output shaft of the fourth servo motor is connected to the drive gear, and the drive gear meshes with the gear ring.

7. The piston connecting rod automatic loosening and fracture workstation according to claim 1, characterized in that: The lifting mechanism includes a lifting cylinder, a guide shaft, and a guide sleeve. A telescopic rod of the lifting cylinder is mounted on the base. The lifting cylinder is arranged vertically. The cylinder body of the lifting cylinder is mounted on the lower end of the guide shaft, which is also arranged vertically. The guide sleeve is provided on the base. The guide shaft slides into the guide sleeve. The upper end of the guide shaft is mounted on the lifting seat.

8. The piston connecting rod automatic loosening and fracture workstation according to claim 1, characterized in that: The fracture breaking unit also includes an abutment seat and a telescopic slide rod. The abutment seat is located above the lifting seat. The fixed end of the telescopic slide rod is connected to the lifting seat, and the telescopic end of the telescopic slide rod is connected to the abutment seat. The abutment seat is used to abut against the support plate. The abutment seat has a third through hole corresponding to the position of the fracture breaking head, allowing the fracture breaking head to pass through. The third through hole corresponds to the position of the second through hole.

9. The piston connecting rod automatic loosening and fracture workstation according to claim 8, characterized in that: The upper end of the abutment seat is provided with abutment blocks on both sides of the third through hole. A dust suction hole is opened on the abutment block near the third through hole. A dust suction connector is provided on the abutment block and communicates with the dust suction hole. The dust suction connector is used to connect a dust suction device.

10. The piston connecting rod automatic loosening and fracture workstation according to claim 1, characterized in that: It also includes a pallet placement platform for placing a pallet and its piston rod.

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