An automatic trimming and transmission mechanism for automobile engine connecting rods

Abstract

The present invention discloses an automatic trimming and conveying mechanism for an automobile engine connecting rod, which includes a feeding and material taking mechanism, a pre-trimming conveying mechanism, a post-trimming conveying mechanism, a connecting rod taking mechanism and a flash taking mechanism. The feeding and material taking mechanism corresponds to the position of the lower trimming die of the trimming machine. The pre-trimming conveying mechanism and the post-trimming conveying mechanism are arranged on the horizontal two sides along the same straight line of the feeding and material taking mechanism. The connecting rod taking mechanism and the flash taking mechanism are arranged on the longitudinal two sides at one end of the post-trimming conveying mechanism away from the feeding and material taking mechanism. The operation of the present invention is simple, which can reduce the workload of operators and improve work efficiency, and realize the automation of connecting rod trimming.

Description

Technical Field

[0001] The present invention relates to the technical field of engine connecting rods, and particularly to an automatic trimming and conveying mechanism for an automobile engine connecting rod. Background Art

[0002] The engine connecting rod is one of the main transmission mechanisms of an automobile engine. It connects the piston and the crankshaft, transmits the expanding gas pressure acting on the top of the piston to the crankshaft, and reversibly converts the reciprocating linear motion of the piston into the rotary motion of the crankshaft to output power.

[0003] When the engine connecting rod is forged, it successively undergoes processes such as blanking - bar heating - roll forging - closed - die forging - trimming and punching - sizing, etc. After closed - die forging, excess blanks will appear around the connecting rod to form flash. In order to separate the connecting rod from the flash, it is necessary to enter the next process - trimming and punching. The existing trimming and punching is to manually pick up the connecting rod with flash and place it in the lower trimming die of the trimming machine for stamping to separate the connecting rod from the flash. After separation, the connecting rod and the flash are picked up manually together. The connecting rod is placed into the next process, and the flash is placed into the flash treatment box. This processing method, on the one hand, increases the workload of the operators. And due to the harsh working environment, it has relatively high requirements for the physical fitness of the operators and requires frequent replacement of operators. On the other hand, the operation by manual is inefficient and does not meet the requirements of industrial automation.

[0004] In order to reduce the workload of the operators and improve work efficiency, it is necessary to achieve trimming automation. And how to accurately send the connecting rod with flash to the lower trimming die of the trimming machine, after the trimming machine operates, take out the stamped flash and the connecting rod, and perform transmission and separation is a technical problem that those skilled in the art urgently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to solve the above problems, and to provide an automatic trimming and conveying mechanism for an automobile engine connecting rod that can reduce the workload of the operators, enable the operators to stay away from the harsh environment, improve work efficiency, and meet the requirements of industrial automation. This conveying mechanism can accurately send the connecting rod with flash to the lower trimming die of the trimming machine. When the trimming machine separates the connecting rod from the flash, it can also take out the connecting rod and the flash in the lower trimming die, and transport them by the post - trimming conveying mechanism to between the connecting rod taking mechanism and the flash taking mechanism. Then, the connecting rod taking mechanism takes the connecting rod from the post - trimming conveying mechanism and places it into the next process, and the flash taking mechanism takes the flash from the post - trimming conveying mechanism and places it into the flash treatment box to complete the separation of the connecting rod and the trimming, thereby realizing trimming automation.

[0006] In order to achieve the above-mentioned purpose, the present invention provides an automatic trimming transmission mechanism for connecting rods of automobile engines, comprising a feeding and taking-up mechanism, a front trimming transmission mechanism, a rear trimming transmission mechanism, a connecting rod taking mechanism and a flash taking mechanism, wherein the feeding and taking-up mechanism corresponds to the position of a lower trimming mold of a trimming machine, the feeding and taking-up mechanism is provided with a front trimming transmission mechanism and a rear trimming transmission mechanism on two horizontal sides along the same straight line, and the rear trimming transmission mechanism is provided with a connecting rod taking mechanism and a flash taking mechanism on two longitudinal sides away from one end of the feeding and taking-up mechanism.

[0007] As a further optimization, light curtain switches are connected to both sides of the longitudinal direction of one end of the pre-trimming transmission mechanism away from the feeding and taking mechanism through brackets.

[0008] As a further optimization, the feeding and taking mechanism, the pre-trimming transmission mechanism, the post-trimming transmission mechanism, the taking connecting rod mechanism and the flash taking mechanism are all fixedly connected to the same support.

[0009] As a further optimization, the feeding and taking mechanism includes a fixed seat, a trimming guide rod cylinder, a trimming lifting cylinder, a first concave connecting plate, a trimming support rod, a fixed plate, an upper positioning groove connecting plate and a trimming upper positioning groove. The top of the fixed seat is connected to the cylinder body of the trimming guide rod cylinder, and one end of the guide rod on the trimming guide rod cylinder is connected to the cylinder body on the trimming lifting cylinder through the connecting plate. A first induction switch is provided on the side of the trimming guide rod cylinder body away from the trimming lifting cylinder body, and the first induction switch is connected to the top of the fixed seat, and a second induction switch is connected to the upper part of the side of the fixed seat opposite to the trimming lifting cylinder. One end of the guide rod on the upper part is connected to a first concave connecting plate, and both ends of the first concave connecting plate are connected to trimming support rods, and the upper and lower ends of the side of the trimming lifting cylinder body away from the connecting plate are connected to a first magnetic ring switch and a second magnetic ring switch, and the trimming lifting cylinder body is connected to a fixed plate by bolts, and an upper positioning groove connecting plate is welded at the lower end of the fixed plate, and the bottom of the upper positioning groove connecting plate away from the fixed plate is connected to an upper trimming positioning groove by bolts, and the shape of the upper trimming positioning groove is similar to the appearance of the connecting rod with flash, and after the guide rod of the trimming guide rod cylinder is extended, the upper trimming positioning groove corresponds to the cavity in the lower trimming mold of the trimming machine.

[0010] As a further optimization, the pre-trimming transfer mechanism includes a first rodless cylinder, a first transfer support plate, and a first transfer lower positioning groove. Third magnetic ring switches and fourth magnetic ring switches are respectively arranged on the first end covers at both ends of the first rodless cylinder. The top of the first moving slider on the first rodless cylinder is bolted with a first transfer support plate. The top end of the first transfer support plate is bolted with a first transfer lower positioning groove that is shaped to follow the contour of the connecting rod with flash. When the first moving slider drives the first transfer lower positioning groove to move to the end, the position of the first transfer lower positioning groove corresponds to that of the upper trimming positioning groove on the feeding and picking mechanism, and it is located between the upper trimming positioning groove and the trimming support rod.

[0011] As a further optimization, the first transfer support plate includes a first fixed end and a first bearing end. The first fixed end is bolted to the first moving slider. One end of the first fixed end is connected to the first bend on one side of the first bearing end through a heat insulation plate. The width of the first bearing end is greater than that of the first bend. The first transfer lower positioning groove is bolted to the first bearing end.

[0012] As a further optimization, the post-trimming transfer mechanism includes a second rodless cylinder, a second transfer support plate, and a second transfer lower positioning groove. Fifth magnetic ring switches and sixth magnetic ring switches are respectively arranged on the second end covers at both ends of the second rodless cylinder. The top of the second moving slider on the second rodless cylinder is bolted with a second transfer support plate. The top end of the second transfer support plate is bolted with a second transfer lower positioning groove that is shaped to follow the contour of the connecting rod with flash. When the second moving slider drives the second transfer lower positioning groove to move to the end, the position of the second transfer lower positioning groove corresponds to that of the upper trimming positioning groove on the feeding and picking mechanism, and it is located between the upper trimming positioning groove and the trimming support rod.

[0013] As a further optimization, the second transfer support plate includes a second fixed end and a second bearing end. The second fixed end is bolted to the second moving slider. One end of the second fixed end is connected to the second bend on one side of the second bearing end through a heat insulation plate. The width of the second bearing end is greater than that of the second bend. The second transfer lower positioning groove is bolted to the second bearing end.

[0014] As a further optimization, the link taking mechanism includes a first fixed bracket, a link taking lifting cylinder, a link taking guide rod cylinder, a finger cylinder, clamping jaws and a tensioning block. The side wall of the first fixed bracket is connected to the cylinder body of the link taking lifting cylinder. The upper and lower ends of the cylinder body of the link taking lifting cylinder are provided with a seventh magnetic ring switch and an eighth magnetic ring switch. The guide rod on the link taking lifting cylinder is connected to the cylinder body of the link taking guide rod cylinder through a connecting plate. The two ends of the cylinder body of the link taking guide rod cylinder are provided with a ninth magnetic ring switch and a tenth magnetic ring switch. The guide rod on the link taking guide rod cylinder is connected to the cylinder body of the finger cylinder through a connecting plate. The two ends of the side wall of the cylinder body of the finger cylinder are provided with an eleventh magnetic ring switch and a twelfth magnetic ring switch. Clamping jaws are connected to both of the two air claws on the finger cylinder. A semi-circular tensioning block is connected to the bottom of each clamping jaw away from the air claw. The diameter of the two tensioning blocks is smaller than the diameter of the link round hole. A link slideway is arranged below the tensioning block.

[0015] As a further optimization, the flash taking mechanism includes a second fixed bracket, a flash taking lifting cylinder, a flash taking guide rod cylinder, a second concave connecting plate, a flash taking support rod, a flash slideway and a flash taking baffle. The side wall of the second fixed bracket is connected to the cylinder body of the flash taking lifting cylinder. The upper and lower ends of the cylinder body of the flash taking lifting cylinder are provided with a thirteenth magnetic ring switch and a fourteenth magnetic ring switch. The guide rod of the flash taking lifting cylinder is connected to the cylinder body of the flash taking guide rod cylinder through a connecting plate. The two ends of the cylinder body of the flash taking guide rod cylinder are provided with a fifteenth magnetic ring switch and a sixteenth magnetic ring switch. The guide rod of the flash taking guide rod cylinder is connected to the second concave connecting plate through a connecting plate. Flash taking support rods are welded to the two ends of the protrusion of the second concave connecting plate. A flash slideway is arranged below the flash taking support rod. A flash taking baffle is arranged on one side of the flash slideway close to the second concave connecting plate, and the flash taking baffle is located between the two flash taking support rods.

[0016] Advantages and beneficial effects of the present invention

[0017] 1. The present invention includes a feeding and material taking mechanism, a pre-trimming transmission mechanism, a post-trimming transmission mechanism, a connecting rod taking mechanism, and a flash taking mechanism. The pre-trimming transmission mechanism transports the connecting rod with flash to the feeding and material taking mechanism. The feeding and material taking mechanism can accurately send the connecting rod with flash into the cavity of the lower trimming die. The trimming machine punches to separate the connecting rod with flash into a connecting rod and a flash. The feeding and material taking mechanism takes out the punched connecting rod and flash, transports them to between the connecting rod taking mechanism and the flash taking mechanism by the post-trimming transmission mechanism. Finally, the connecting rod taking mechanism takes out the connecting rod on the post-trimming transmission mechanism and slides it along the connecting rod slideway to the next process, and the flash taking mechanism takes out the flash on the post-trimming transmission mechanism and slides it along the flash slideway into the flash treatment box, thus realizing trimming automation, keeping the operating workers away from the harsh environment, so there is no need to frequently replace the operating workers, reducing the workload of the operating workers, improving the work efficiency, and meeting the requirements of industrial automation.

[0018] 2. In the present invention, the feeding and material taking mechanism moves forward and backward for feeding and material taking through the trimming guide rod cylinder, and controls the trimming support rod to rise or fall through the trimming lifting cylinder, so as to lift the connecting rod with flash in the lower transmission positioning groove or place the connecting rod with flash in the lower transmission positioning groove. The upper positioning groove connecting plate is connected to the upper trimming positioning groove by bolts. The upper trimming positioning groove can be finely adjusted up and down through bolt connection. When changing the die of the upper and lower dies in the trimming machine, the upper trimming positioning groove can also be replaced accordingly.

[0019] 3. In the present invention, the lower transmission positioning grooves on the pre-trimming transmission mechanism and the post-trimming transmission mechanism are in a shape imitating the lower part of the connecting rod with flash and can be mutually fitted with the lower part of the connecting rod with flash. The upper trimming positioning groove on the feeding and material taking mechanism is in a shape imitating the upper part of the connecting rod with flash and can be mutually fitted with the upper part of the connecting rod with flash, so that it can be more accurate during the processes of pre-trimming transmission, feeding and material taking, and post-trimming transmission, ensuring the stability during the transmission process.

[0020] 4. In the present invention, the transmission support plates on the pre-trimming transmission mechanism and the post-trimming transmission mechanism both include a fixed end and a bearing end. The fixed end is connected to the moving slider by bolts. The fixed end is connected to the bend on one side of the bearing end through a heat insulation plate, so as to prevent the heat of the bearing end from being transferred to the fixed end and damaging the moving slider on the rodless cylinder. One side of the bearing end close to the fixed end has a downward bend, so that when the bearing end reaches the end, it can be located between the upper trimming positioning groove and the trimming support rod. The width of the bend is smaller than the width of the bearing end. The narrow width of the bend can avoid the trimming support rod of the feeding and material taking mechanism, while the wide width of the bearing end can increase the bearing strength of the bearing end, making the upper trimming positioning groove align with the lower transmission positioning groove. The top of the bearing end is connected with the lower transmission positioning groove by bolts, and it can be replaced accordingly when changing the die of the upper and lower dies in the trimming machine, which is simple and fast.

[0021] 5. In the present invention, the pre-trimming transfer mechanism, the feeding and picking mechanism, the post-trimming transfer mechanism, the connecting rod picking mechanism, and the flash picking mechanism are fixed on the same support, and their relative positions are already fixed. When debugging and installing with the trimming machine, only the position of the upper trimming positioning groove in the feeding and picking mechanism and the lower trimming die of the trimming machine needs to be adjusted, and the installation and debugging are simple.

[0022] 6. In the connecting rod picking mechanism of the present invention, it rises and falls through the connecting rod lifting cylinder, advances and retreats through the telescoping of the connecting rod guide rod cylinder, and clamps and releases the connecting rod by the clamping and loosening of the finger cylinder to control the tension block to pick up or release the connecting rod, so as to realize picking up the trimmed connecting rod and transporting it to the next process.

[0023] 7. In the flash picking mechanism of the present invention, it rises and falls through the flash picking lifting cylinder, and the forward and backward movement of the flash picking support rod is controlled by the telescoping of the flash picking guide rod cylinder. When the flash picking support rod retracts the trimmed flash, it is blocked by the flash picking baffle, so that the flash slides along the flash chute into the flash treatment box. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0025] Figure 1 is the overall structure schematic diagram provided by the embodiment of the present invention;

[0026] Figure 2 is the schematic diagram of the feeding and picking mechanism in the embodiment of the present invention;

[0027] Figure 3 is the schematic diagram of the pre-trimming transfer mechanism in the embodiment of the present invention;

[0028] Figure 4 is the schematic diagram of the post-trimming transfer mechanism in the embodiment of the present invention;

[0029] Figure 5 is the schematic diagram of the connecting rod picking mechanism in the embodiment of the present invention;

[0030] Figure 6 is the schematic diagram of the flash picking mechanism in the embodiment of the present invention;

[0031] Figure 7 is the schematic diagram of the connecting rod with flash in the embodiment of the present invention.

[0032] Reference numerals: feeding and material taking mechanism 1, fixed seat 11, trimming guide rod cylinder 12, trimming lifting cylinder 13, first concave connecting plate 14, trimming support rod 15, upper positioning groove connecting plate 16, trimming upper positioning groove 17, first inductive switch 18, second inductive switch 19, first magnetic ring switch 110, second magnetic ring switch 111, pre-trimming transfer mechanism 2, first rodless cylinder 21, first end cover 211, first moving slider 212, first transfer support plate 22, first fixed end 221, first bearing end 222, first bend 223, first transfer lower positioning groove 23, third magnetic ring switch 24, fourth magnetic ring switch 25, post-trimming transfer mechanism 3, second rodless cylinder 31, second end cover 311, second moving slider 312, second transfer support plate 32, second fixed end 321, second bearing end 322, second bend 323, second transfer lower positioning groove 33, fifth magnetic ring switch 34, sixth magnetic ring switch 35, material taking connecting rod mechanism 4, first fixed bracket 41, material taking connecting rod lifting cylinder 42, material taking connecting rod guide rod cylinder 43, finger cylinder 44, clamping jaw 45, tensioning block 46, connecting rod slideway 47, seventh magnetic ring switch 48, eighth magnetic ring switch 49, ninth magnetic ring switch 410, tenth magnetic ring switch 411, eleventh magnetic ring switch 412, twelfth magnetic ring switch 413, flash taking mechanism 5, second fixed bracket 51, flash taking lifting cylinder 52, flash taking guide rod cylinder 53, second concave connecting plate 54, flash taking support rod 55, flash slideway 56, flash taking baffle 57, thirteenth magnetic ring switch 58, fourteenth magnetic ring switch 59, fifteenth magnetic ring switch 510, sixteenth magnetic ring switch 511, trimming machine 6, lower trimming die 61, bracket 7, light curtain switch 8, support 9, flash connecting rod 10, connecting rod 101 and flash 102. Detailed implementation manners

[0033] The terms "first", "second", "third", "fourth", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0034] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. The specific implementation manners of the present invention will be described in detail below with reference to the drawings.

[0035] As Figure 1As shown in the figure, an automatic trimming and conveying mechanism for an automotive engine connecting rod includes a feeding and picking mechanism 1, a pre-trimming conveying mechanism 2, a post-trimming conveying mechanism 3, a connecting rod picking mechanism 4, and a flash picking mechanism 5. The feeding and picking mechanism 1 corresponds to the position of the lower trimming die 61 of the trimming machine 6, and is used to place the connecting rod 10 with flash transferred from the pre-trimming conveying mechanism 2 into the lower trimming die 61 of the trimming machine, and to pick out the separated connecting rod 101 and flash 102 in the trimming machine together. The trimming machine 6 and the lower trimming die 61 are existing designs. The trimming machine 6 is connected to the PLC by a wire. The feeding and picking mechanism 1 is provided with the pre-trimming conveying mechanism 2 and the post-trimming conveying mechanism 3 on the horizontal sides along the same straight line. The pre-trimming conveying mechanism 2 is used to accurately convey the connecting rod 10 with flash formed by hammer forging in the forging die to the front of the feeding and picking mechanism 1. The post-trimming conveying mechanism 3 is used to accurately convey the separated flash 102 and connecting rod 101 to between the connecting rod picking mechanism 4 and the flash picking mechanism 5. The longitudinal sides of one end of the post-trimming conveying mechanism 3 far from the feeding and picking mechanism 1 are provided with the connecting rod picking mechanism 4 and the flash picking mechanism 5. The connecting rod picking mechanism 4 is used to pick out the connecting rod 101 separated from the flash from the post-trimming conveying mechanism 3. The flash picking mechanism 5 is used to pick out the flash 102 separated from the connecting rod from the post-trimming conveying mechanism 3. The longitudinal sides of one end of the pre-trimming conveying mechanism 2 far from the feeding and picking mechanism 1 are connected with a light curtain switch 8 through a bracket 7. The light curtain switch 8 is connected to the PLC by a wire, and is used to sense whether the arm leaves after the connecting rod 10 with flash is placed in the pre-trimming conveying mechanism 2. The arm leaving represents that the connecting rod 10 with flash has been placed in the pre-trimming conveying mechanism 2.

[0036] As a further optimization, the feeding and picking mechanism 1, the pre-trimming conveying mechanism 2, the post-trimming conveying mechanism 3, the connecting rod picking mechanism 4, and the flash picking mechanism 5 are all fixedly connected to the same support 9. In this way, their positions are already fixed. When debugging and installing with the trimming machine 6, only the position of the trimming upper positioning groove in the feeding and picking mechanism 1 and the lower trimming die of the trimming machine needs to be adjusted, and the installation and debugging are simple.

[0037] As Figure 2As shown, the feeding and taking mechanism 1 includes a fixed seat 11, a trimming guide rod cylinder 12, a trimming lifting cylinder 13, a first concave connecting plate 14, a trimming supporting rod 15, an upper positioning groove connecting plate 16 and a trimming upper positioning groove 17. The fixed seat 11 is fixed to the top of the support 9, and the top of the fixed seat 11 is connected to the cylinder body of the trimming guide rod cylinder 12. One end of the guide rod on the trimming guide rod cylinder 12 is connected to the cylinder body of the trimming lifting cylinder 13 through a connecting plate. A first induction switch 18 is provided on the side of the cylinder body of the trimming guide rod cylinder 12 away from the cylinder body of the trimming lifting cylinder 13 (after the guide rod of the trimming guide rod cylinder 12 extends forward, the first induction switch 18 is provided at the rear end of the guide rod relative to the fixed seat). The first induction switch 18 is connected to the cylinder body of the trimming guide rod cylinder 12 by a wire. The second sensing switch 19 is connected to the PLC and is used to sense that the guide rod of the trimming guide rod cylinder 12 is extended into place and transmits a signal to the PLC. The upper part of the fixed seat 11 on one side relative to the trimming lifting cylinder 13 is connected to a second sensing switch 19 (after the guide rod on the trimming guide rod cylinder 12 retreats backward, a second sensing switch 19 is provided at a position opposite to the side of the fixed seat). The second sensing switch 19 is connected to the PLC through a wire and is used to sense that the guide rod of the trimming guide rod cylinder 12 retreats into place and transmits a signal to the PLC. One end of the guide rod on the trimming lifting cylinder 13 is connected to a first concave connecting plate 14, and the convex ends of the first concave connecting plate 14 are connected to trimming support rods 15, and the distance between the trimming support rods 15 is slightly larger than the first transmission lower positioning groove 23 and the first transmission lower positioning groove 24. The length of the second transmission lower positioning groove 33 and the trimming upper positioning groove 17 is slightly smaller than the length of the flash connecting rod 10, so that the flash connecting rod 10 can be lifted from the transmission positioning groove. The trimming guide rod cylinder 12 is used to drive the trimming lifting cylinder 13, the upper positioning groove connecting plate 16 and the trimming upper positioning groove 17 to move forward and backward. The trimming lifting cylinder 13 is used to drive the trimming supporting rod 15 to move up and down. The first magnetic ring switch 110 and the second magnetic ring switch 111 are connected to the upper and lower ends of the cylinder body of the trimming lifting cylinder 13 away from the connecting plate. The first magnetic ring switch 110 and the second magnetic ring switch 111 are connected to the PLC through a line, and are used to detect that the guide rod on the trimming lifting cylinder 13 rises and falls into place and transmits a signal to the PLC. The cylinder body of the lifting cylinder 13 is connected to a fixed plate by bolts, and an upper positioning groove connecting plate 16 is welded at the lower end of the fixed plate. The bottom of the upper positioning groove connecting plate 16 away from the fixed plate is connected to an upper trimming positioning groove 17 by bolts. The shape of the upper trimming positioning groove 17 is similar to the upper shape of the connecting rod 10 with flash, and is embedded with the upper part of the connecting rod 10 with flash. The upper trimming positioning groove 17 can be fine-tuned up and down by bolting. When the product is replaced and the upper and lower molds in the trimming machine need to be replaced, the upper trimming positioning groove 17 can also be replaced accordingly. After the guide rod of the trimming guide rod cylinder 12 is extended into place, the upper trimming positioning groove 17 corresponds to the cavity in the lower trimming mold 61. After the guide rod of the trimming guide rod cylinder 12 is retracted into place,The positioning groove 17 on the trimmed edge corresponds to the position of the first lower transmission positioning groove 23 when the pre-trimming transmission mechanism 2 runs to the leftmost end and also corresponds to the position of the second lower transmission positioning groove 33 when the post-trimming transmission mechanism 3 runs to the rightmost end.

[0038] As Figure 3 shown, the pre-trimming transmission mechanism 2 includes a first rodless cylinder 21, a first transmission support plate 22, and a first lower transmission positioning groove 23. Third magnetic ring switches 24 and fourth magnetic ring switches 25 are provided on the first end caps 211 at the left and right ends of the first rodless cylinder 21. The third magnetic ring switch 24 and the fourth magnetic ring switch 25 are connected to the PLC through wires and are used to detect when the first moving slider 212 slides to the leftmost or rightmost end and then transmit signals to the PLC. The top of the first moving slider 212 on the first rodless cylinder 21 is bolted with a first transmission support plate 22. The first transmission support plate 22 includes a first fixed end 221 and a first bearing end 222. The first fixed end 221 is bolted to the first moving slider 212. One end of the first fixed end 221 is connected to a first bend 223 on one side of the first bearing end 222 through a heat insulation plate. The first bend 223 can raise the position of the first bearing end 222 so that the first bearing end 222 is between the positioning groove 17 on the trimmed edge and the trimming support rod 15. The width of the first bearing end 222 is greater than the width of the first bend 223. The large width of the first bearing end 222 can increase the bearing strength, while the small width of the first bend 223 can avoid the trimming support rod 15 in the feeding and material taking mechanism. A first lower transmission positioning groove 23 that is shaped like the lower part of the connecting rod 10 with flash is bolted to the first bearing end 222. When the first moving slider 212 drives the first lower transmission positioning groove 23 to move to the leftmost end, the first lower transmission positioning groove 23 corresponds to the positioning groove 17 on the trimmed edge of the feeding and material taking mechanism 1 and is located between the positioning groove 17 on the trimmed edge and the trimming support rod 15.

[0039] As Figure 4As shown, the post-trimming transfer mechanism 3 includes a second rodless cylinder 31, a second transfer support plate 32, and a second transfer lower positioning groove 33. Fifth magnetic ring switches 34 and sixth magnetic ring switches 35 are provided on second end caps 311 at the left and right ends of the second rodless cylinder 31. The fifth magnetic ring switch 34 and the sixth magnetic ring switch 35 are connected to a PLC via wires and are used to detect when a second moving slider 312 slides to the leftmost or rightmost end and transmit a signal to the PLC. The top of the second moving slider 312 on the second rodless cylinder 31 is bolted to a second transfer support plate 32. The second transfer support plate 32 includes a second fixed end 321 and a second bearing end 322. The second fixed end 321 is bolted to the second moving slider 312. One end of the second fixed end 321 is connected to a second bend 323 on one side of the second bearing end 322 through a heat insulation plate. The second bend 323 can raise the position of the second bearing end 322 so that the second bearing end 322 is located between a trimming upper positioning groove 17 and a trimming support rod 15. The width of the second bearing end 322 is greater than the width of the second bend 323. The large width of the second bearing end 322 can increase the bearing strength, while the small width of the second bend 323 can avoid interference with the trimming support rod 15 in the feeding and material taking mechanism. A second transfer lower positioning groove 33 similar in shape to the lower part of the connecting rod 10 with flash is bolted to the second bearing end 322. The size and shape of the second transfer lower positioning groove 33 are the same as those of the first transfer lower positioning groove 23. When the second moving slider 312 drives the second transfer lower positioning groove 33 to move to the rightmost end, the second transfer lower positioning groove 33 corresponds to the position of the trimming upper positioning groove 17 on the feeding and material taking mechanism 1 and is located between the trimming upper positioning groove 17 and the trimming support rod 15.

[0040] As Figure 5As shown, the link taking mechanism 4 includes a first fixed bracket 41, a link taking lifting cylinder 42, a link taking guide rod cylinder 43, a finger cylinder 44, a clamping jaw 45 and a tensioning block 46. The side wall of the first fixed bracket 41 is connected to the cylinder block of the link taking lifting cylinder 42. The link taking lifting cylinder 42 is used to drive the link taking guide rod cylinder 43, the receiving cylinder 44, the clamping jaw 45 and the tensioning block 46 to rise and fall. At the upper and lower ends of the cylinder block of the link taking lifting cylinder 42, there are a seventh magnetic ring switch 48 and an eighth magnetic ring switch 49. The seventh magnetic ring switch 48 and the eighth magnetic ring switch 49 are connected to the PLC through wires, and are used to detect that the guide rod on the link taking lifting cylinder 42 rises in place and falls in place and then send signals to the PLC. The guide rod on the link taking lifting cylinder 42 is connected to the cylinder block of the link taking guide rod cylinder 43 through a connecting plate. The link taking guide rod cylinder 43 is used to drive the finger cylinder 44, the clamping jaw 45 and the tensioning block 46 to extend or retract. At the front and rear ends of the cylinder block of the link taking guide rod cylinder 43, there are a ninth magnetic ring switch 410 and a tenth magnetic ring switch 411. The ninth magnetic ring switch 410 and the tenth magnetic ring switch 411 are connected to the PLC through wires, and are used to detect that the guide rod on the link taking guide rod cylinder 43 moves forward in place or retracts in place and then transmit signals to the PLC. The guide rod on the link taking guide rod cylinder 43 is connected to the cylinder block of the finger cylinder 44 through a connecting plate. The finger cylinder 44 is used to drive the clamping jaw 45 and the tensioning block 46 to clamp or release the connecting rod. At the front and rear ends of the side wall of the cylinder block of the finger cylinder 44, there are an eleventh magnetic ring switch 412 and a twelfth magnetic ring switch 413. The eleventh magnetic ring switch 412 and the twelfth magnetic ring switch 413 are connected to the PLC through wires, and are used to detect that the finger cylinder 44 opens and closes and then transmit signals to the PLC. Clamping jaws 45 are connected to both of the two air claws on the finger cylinder 44. At the bottom of one end of each clamping jaw 45 away from the air claw, a semi-circular tensioning block 46 is connected. The diameter after the two tensioning blocks 46 are closed is smaller than the diameter of the round hole of the connecting rod. By controlling the opening and closing of the tensioning block 46 by the finger cylinder 44, the cut connecting rod 101 is clamped and released. A connecting rod slideway 47 is arranged below the tensioning block 46. The connecting rod 101 clamped by the tensioning block 46 slides to the next process through the connecting rod slideway 47. The connecting rod slideway 47 is fixedly connected to the support 9.

[0041] As Figure 6As shown in the figure, the flash removing mechanism 5 includes a second fixed bracket 51, a flash removing lifting cylinder 52, a flash removing guide rod cylinder 53, a second concave connecting plate 54, a flash removing support rod 55, a flash chute 56 and a flash removing baffle 57. The side wall of the second fixed bracket 51 is connected to the cylinder block of the flash removing lifting cylinder 52. The flash removing lifting cylinder 52 is used to drive the flash removing guide rod cylinder 53, the second concave connecting plate 54 and the flash removing support rod 55 to move forward or backward. The upper and lower ends of the cylinder block of the flash removing lifting cylinder 52 are provided with a thirteenth magnetic ring switch 58 and a fourteenth magnetic ring switch 59. The thirteenth magnetic ring switch 58 and the fourteenth magnetic ring switch 59 are connected to the PLC through wires, and are used to detect that the guide rod on the flash removing lifting cylinder 52 rises in place or descends in place and then transmit signals to the PLC. The guide rod of the flash removing lifting cylinder 52 is connected to the cylinder block of the flash removing guide rod cylinder 53 through a connecting plate. The flash removing guide rod cylinder 53 is used to drive the second concave connecting plate 54 and the flash removing support rod 55 to move forward or backward. The front and rear ends of the cylinder block of the flash removing guide rod cylinder 53 are provided with a fifteenth magnetic ring switch 510 and a sixteenth magnetic ring switch 511. The fifteenth magnetic ring switch 510 and the sixteenth magnetic ring switch 511 are connected to the PLC through wires, and are used to detect that the flash removing guide rod cylinder 53 extends forward in place or retracts backward in place and then transmit signals to the PLC. The guide rod of the flash removing guide rod cylinder 53 is connected to the second concave connecting plate 54 through a connecting plate. The two ends of the protrusion of the second concave connecting plate 54 are welded with flash removing support rods 55. The flash removing support rods 55 are used to lift the flash 102 after trimming from the second transmission lower positioning groove 33 of the trimming and transmission mechanism 3. A flash chute 56 is arranged below the flash removing support rod 55. A flash removing baffle 57 is arranged on one side of the flash chute 56 close to the second concave connecting plate 54, and the flash removing baffle 57 is located between the two flash removing support rods 55 and slightly in front of the flash removing guide rod cylinder 53 after it extends in place.

[0042] In this application, the air sources of all cylinders are connected to the air source of the trimming machine 6 through air pipes.

[0043] Working process

[0044] The flash - connected connecting rod 10 after hot forging ( Figure 7)Manually place it on the first transmission lower positioning groove 23 of the transmission mechanism 2 before trimming. The first transmission lower positioning groove 23 is fitted and positioned with the lower part of the connecting rod 10 with flash. After the light curtain switch 8 senses that the arm is placed and the connecting rod 10 with flash leaves, it transmits a signal to the PLC. The PLC controls the first moving slider 212 on the first rodless cylinder 21 to slide to the leftmost end, transporting the connecting rod 10 with flash to between the trimming upper positioning groove 17 and the trimming support rod 15 of the feeding and picking mechanism. After the third magnetic ring switch 24 detects the first moving slider 212, it transmits a signal to the PLC. The PLC controls the trimming lifting cylinder 13 to drive the trimming support rod 15 to rise upward. The trimming support rod 15 upwardly supports the connecting rod 10 with flash in the first transmission lower positioning groove 23 into the trimming upper positioning groove 17. At this time, the upper part of the connecting rod 10 with flash is fitted and positioned with the trimming upper positioning groove 17. The first magnetic ring switch 110 transmits a signal to the PLC. While the PLC controls the first moving slider 212 to slide to the rightmost end, the PLC controls the trimming guide rod cylinder 12 to extend forward, so that the trimming support rod 15 and the trimming upper positioning groove 17 drive the connecting rod 10 with flash to be sent directly above the lower trimming die of the trimming machine. At this time, the first induction switch 18 senses the rear end of the guide rod of the trimming guide rod cylinder 12 and transmits a signal to the PLC. The PLC controls the guide rod of the trimming lifting cylinder 13 to descend, and the connecting rod 10 with flash falls into the cavity of the lower trimming die. When the second magnetic ring switch 111 senses that the guide rod has descended in place and transmits a signal to the PLC, the PLC controls the trimming guide rod cylinder 12 to drive the trimming support rod 15 and the trimming upper positioning groove 17 to return. When the guide rod of the trimming guide rod cylinder 12 has retreated in place, the second induction switch 19 transmits a signal to the PLC, and the PLC controls the trimming machine 6 to trim the connecting rod 10 with flash.

[0045] After trimming is completed, the trimming machine 6 transmits a signal to the PLC. The PLC controls the guide rod on the trimming guide rod cylinder 12 to move forward. When it moves in place, the first induction switch 18 sends a signal to the PLC. The PLC controls the guide rod of the trimming lifting cylinder 13 to rise upward, thereby driving the trimming support rod 15 to lift the trimmed connecting rod and flash in the cavity of the lower trimming die together and engage with the trimming upper positioning groove 17. When the first magnetic ring switch 110 senses that the guide rod of the trimming lifting cylinder 13 has risen in place, it transmits a signal to the PLC. The PLC will control the trimming guide rod cylinder 12 to retreat backward, and at the same time control the second moving slider 312 on the post-trimming transmission mechanism 3 to move to the right. When the second moving slider 312 moves to the rightmost end, both the sixth magnetic ring switch 35 and when the guide rod of the trimming guide rod cylinder 12 has retreated in place, the second induction switch 19 transmit signals to the PLC. The PLC controls the guide rod of the trimming lifting cylinder 13 to move downward, so that the trimmed flash and connecting rod fall into the second transmission lower positioning groove 33. When the guide rod of the trimming lifting cylinder 13 has moved downward in place, the second magnetic ring switch 111 transmits a signal to the PLC, and the PLC controls the second moving slider 312 to slide to the leftmost end.

[0046] After the fifth magnetic ring switch 34 senses the second moving slider 312, it transmits a signal to the PLC. The PLC controls the pick-up link lifting cylinder 42 to rise. When the seventh magnetic ring switch 48 senses that the guide rod of the pick-up link lifting cylinder 42 has risen in place, it transmits a signal to the PLC. The PLC controls the guide rod of the pick-up link guide rod cylinder 43 to extend. At this time, the tensioning block 46 is directly above the round hole of the upper connecting rod of the second transmission lower positioning groove 33. When the ninth magnetic ring switch 410 senses that the guide rod of the pick-up link guide rod cylinder 43 has extended in place, it transmits a signal to the PLC. The PLC controls the guide rod of the pick-up link lifting cylinder 42 to descend. When the eighth magnetic ring switch 49 senses that the guide rod has descended in place (the tensioning block 46 has already dropped into the connecting rod round hole), it transmits a signal to the PLC. The PLC controls the air clamp on the finger cylinder 44 to open. The opening of the air clamp controls the jaws 45 and the tensioning block 46 to open, thereby tensioning the inner wall of the connecting rod round hole to form frictional force. When the finger cylinder 44 is tensioned in place, the eleventh magnetic ring switch 412 transmits a signal to the PLC. The PLC controls the pick-up link lifting cylinder 42 to rise. When the seventh magnetic ring switch 48 senses that the guide rod of the pick-up link lifting cylinder 42 has risen in place, it transmits a signal to the PLC. The PLC controls the pick-up link guide rod cylinder 43 to retract backward, and at the same time controls the guide rod of the pick-up flash guide rod cylinder 53 on the pick-up flash mechanism 5 to extend. When the tenth magnetic ring switch 411 senses that the guide rod of the pick-up link guide rod cylinder 43 has retracted in place, it transmits a signal to the PLC. The PLC controls the pick-up link lifting cylinder 42 to descend. When the eighth magnetic ring switch 49 senses that the guide rod has descended in place, it transmits a signal to the PLC. The PLC controls the finger cylinder 44 to close. The cut connecting rod drops from the tensioning block 46 into the connecting rod slideway 47 and thus slides to the next process.

[0047] The extension of the guide rod on the pick-up flash guide rod cylinder 53 drives the second concave connecting plate 54 and the pick-up flash support rod 55 to extend forward. At this time, the pick-up flash support rod 55 is located below the connecting rod in the second transmission lower positioning groove 33. When the extension is in place, the fifteenth magnetic ring switch 510 transmits a signal to the PLC. The PLC controls the guide rod of the pick-up flash lifting cylinder 52 to rise. When the thirteenth magnetic ring switch 58 detects that the pick-up flash lifting cylinder 52 has risen in place, it transmits a signal to the PLC. The PLC controls the guide rod of the pick-up flash guide rod cylinder 53 to retract. During the retraction of the guide rod, due to the blockage of the pick-up flash baffle 57, the cut flash 102 slides along the flash slideway 56 into the flash treatment box. When the sixteenth magnetic ring switch 511 detects that the pick-up flash guide rod 55 has retracted in place, it transmits a signal to the PLC. The PLC controls the guide rod of the pick-up flash lifting cylinder 52 to descend.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, rather than to limit them; although the embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the solutions of the embodiments of the present invention.

Claims

1. An automatic trimming and conveying mechanism for an automobile engine connecting rod, characterized in that: The invention comprises a feeding and taking-up mechanism (1), a pre-trimming transmission mechanism (2), a post-trimming transmission mechanism (3), a taking-up connecting rod mechanism (4) and a flash removing mechanism (5); the feeding and taking-up mechanism (1) corresponds to the position of a lower trimming die (61) of a trimming machine (6); the feeding and taking-up mechanism (1) is provided with a pre-trimming transmission mechanism (2) and a post-trimming transmission mechanism (3) on both horizontal sides of the same straight line; the post-trimming transmission mechanism (3) is provided with a taking-up connecting rod mechanism (4) and a flash removing mechanism (5) on both longitudinal sides away from one end of the feeding and taking-up mechanism (1); The longitudinal sides of one end of the pre-trimming transmission mechanism (2) away from the feeding and taking mechanism (1) are connected to light curtain switches (8) via brackets (7); The feeding and taking mechanism (1), the pre-trimming transmission mechanism (2), the post-trimming transmission mechanism (3), the taking connecting rod mechanism (4) and the flash taking mechanism (5) are all fixedly connected to the same support (9); The feeding and taking mechanism (1) comprises a fixed seat (11), a trimming guide rod cylinder (12), a trimming lifting cylinder (13), a first concave connecting plate (14), a trimming supporting rod (15), an upper positioning groove connecting plate (16) and a trimming upper positioning groove (17); the top of the fixed seat (11) is connected to the cylinder body of the trimming guide rod cylinder (12); one end of the guide rod on the trimming guide rod cylinder (12) is connected to the cylinder body of the trimming lifting cylinder (13) through the connecting plate; a first induction switch (18) is provided on the side of the cylinder body of the trimming guide rod cylinder (12) away from the cylinder body of the trimming lifting cylinder (13), and the first induction switch (18) is connected to the top of the fixed seat (11); a second induction switch (19) is connected to the upper part of the side of the fixed seat (11) opposite to the trimming lifting cylinder (13); One end of the guide rod on (13) is connected to a first concave connecting plate (14), and both ends of the first concave connecting plate (14) are connected to trimming support rods (15). The upper and lower ends of the cylinder body of the trimming lifting cylinder (13) away from the connecting plate are connected to a first magnetic ring switch (110) and a second magnetic ring switch (111), and the cylinder body of the trimming lifting cylinder (13) is connected to a fixing plate by bolts, and an upper positioning groove connecting plate (16) is welded at the lower end of the fixing plate. The bottom of the upper positioning groove connecting plate (16) away from the fixing plate is connected to an upper trimming positioning groove (17) by bolts. The shape of the upper trimming positioning groove (17) is similar to the upper shape of the flash connecting rod (10). After the guide rod of the trimming guide rod cylinder (12) is extended, the upper trimming positioning groove (17) corresponds to the cavity in the lower trimming mold (61) of the trimming machine.

2. The automatic trimming and transmission mechanism for an automobile engine connecting rod according to claim 1, characterized in that: The pre-trimming transfer mechanism (2) includes a first rodless cylinder (21), a first transfer support plate (22), and a first transfer lower positioning groove (23). Third magnetic ring switches (24) and fourth magnetic ring switches (25) are respectively provided on the first end caps (211) at both ends of the first rodless cylinder (21). The top of the first moving slider (212) on the first rodless cylinder (21) is bolted to a first transfer support plate (22). The top end of the first transfer support plate (22) is bolted to a first transfer lower positioning groove (23) similar in shape to the lower part of the connecting rod with flash (10). When the first moving slider (212) drives the first transfer lower positioning groove (23) to move to the end, the position of the first transfer lower positioning groove (23) corresponds to that of the upper trimming positioning groove (17) on the feeding and picking mechanism (1), and it is located between the upper trimming positioning groove (17) and the trimming support rod (15).

3. An automatic trimming and conveying mechanism for an automobile engine connecting rod according to claim 2, characterized in that: The first transfer support plate (22) includes a first fixed end (221) and a first bearing end (222). The first fixed end (221) is bolted to the first moving slider (212). One end of the first fixed end (221) is connected to a first bend (223) on one side of the first bearing end (222) through a heat-insulating plate. The width of the first bearing end (222) is greater than that of the first bend (223). The first transfer lower positioning groove (23) is bolted to the first bearing end (222).

4. An automatic trimming and conveying mechanism for an automobile engine connecting rod according to claim 1, characterized in that: The post-trimming transfer mechanism (3) includes a second rodless cylinder (31), a second transfer support plate (32), and a second transfer lower positioning groove (33). Fifth magnetic ring switches (34) and sixth magnetic ring switches (35) are respectively provided on the second end caps (311) at both ends of the second rodless cylinder (31). The top of the second moving slider (312) on the second rodless cylinder (31) is bolted to a second transfer support plate (32). The top end of the second transfer support plate (32) is bolted to a second transfer lower positioning groove (33) similar in shape to the lower part of the connecting rod with flash (10). When the second moving slider (312) drives the second transfer lower positioning groove (33) to move to the end, the position of the second transfer lower positioning groove (33) corresponds to that of the upper trimming positioning groove (17) on the feeding and picking mechanism (1), and it is located between the upper trimming positioning groove (17) and the trimming support rod (15).

5. An automatic trimming and transfer mechanism for an automotive engine connecting rod according to claim 4, characterized in that: The second transfer support plate (32) includes a second fixed end (321) and a second bearing end (322). The second fixed end (321) is bolted to the second moving slider (312). One end of the second fixed end (321) is connected to a second bend (323) on one side of the second bearing end (322) through a heat-insulating plate. The width of the second bearing end (322) is greater than that of the second bend (323). The second transfer lower positioning groove (33) is bolted to the second bearing end (322).

6. The automatic trimming and transfer mechanism for an automobile engine connecting rod according to claim 1, wherein: The described connecting rod picking mechanism (4) includes a first fixed bracket (41), a connecting rod picking lifting cylinder (42), a connecting rod picking guide rod cylinder (43), a finger cylinder (44), a jaw (45) and a tensioning block (46). The side wall of the first fixed bracket (41) is connected to the cylinder body of the connecting rod picking lifting cylinder (42). The upper and lower ends of the cylinder body of the connecting rod picking lifting cylinder (42) are provided with a seventh magnetic ring switch (48) and an eighth magnetic ring switch (49). The guide rod on the connecting rod picking lifting cylinder (42) is connected to the cylinder body of the connecting rod picking guide rod cylinder (43) through a connecting plate. The two ends of the cylinder body of the connecting rod picking guide rod cylinder (43) are provided with a ninth magnetic ring switch (410) and a tenth magnetic ring switch (411). The guide rod on the connecting rod picking guide rod cylinder (43) is connected to the cylinder body of the finger cylinder (44) through a connecting plate. The two ends of the side wall of the cylinder body of the finger cylinder (44) are provided with an eleventh magnetic ring switch (412) and a twelfth magnetic ring switch (413). Two jaws are connected to the two air jaws on the finger cylinder (44). The bottom of each jaw (45) far from the air jaw is connected with a semi-circular tensioning block (46). The diameters of the two tensioning blocks (46) are smaller than the diameter of the connecting rod round hole. A connecting rod slideway (47) is arranged below the tensioning block (46).

7. An automatic trimming and conveying mechanism for an automobile engine connecting rod according to claim 1, characterized in that: The described flash picking mechanism (5) includes a second fixed bracket (51), a flash picking lifting cylinder (52), a flash picking guide rod cylinder (53), a second concave connecting plate (54), a flash picking support rod (55), a flash slideway (56) and a flash picking baffle (57). The side wall of the second fixed bracket (51) is connected to the cylinder body of the flash picking lifting cylinder (52). The upper and lower ends of the cylinder body of the flash picking lifting cylinder (52) are provided with a thirteenth magnetic ring switch (58) and a fourteenth magnetic ring switch (59). The guide rod of the flash picking lifting cylinder (52) is connected to the cylinder body of the flash picking guide rod cylinder (53) through a connecting plate. The two ends of the cylinder body of the flash picking guide rod cylinder (53) are provided with a fifteenth magnetic ring switch (510) and a sixteenth magnetic ring switch (511). The guide rod of the flash picking guide rod cylinder (53) is connected to the second concave connecting plate (54) through a connecting plate. The two ends of the protrusion of the second concave connecting plate (54) are welded with flash picking support rods (55). A flash slideway (56) is arranged below the flash picking support rod (55). A flash picking baffle (57) is arranged on one side of the flash slideway (56) close to the second concave connecting plate (54), and the flash picking baffle (57) is located between the two flash picking support rods (55).

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