Trimming device for upper cross beam and stand column connecting piece of bending machine

Abstract

The trimming device for the connecting piece of the upper cross beam and the stand column of the bending machine comprises a discharging unit, the discharging unit comprises a material containing box body, a detecting and conveying unit is arranged on the side, provided with an opening, of the material containing box body, a polishing unit is arranged on the side, away from the material containing box body, of the detecting and conveying unit, and a trimming unit is further arranged on one side of the detecting and conveying unit; by arranging the discharging unit and the detecting and conveying unit, each metal piece in the same batch can be subjected to size detection, compared with traditional sampling inspection, the yield is higher, by arranging the trimming unit, the trimming unit comprises the multiple trimming blocks and the trimming mechanism, the multiple metal pieces can be trimmed at the same time, the trimming efficiency is improved, and the trimming efficiency is improved. And the production efficiency is improved. In the trimming unit, trimming of the inner diameter size or trimming of the outer diameter size of the metal piece can be achieved at the same time, manual trimming one by one is not needed any more, the trimming precision is improved, and the trimming efficiency is also improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of the preparation of parts for a bending machine, and particularly relates to a trimming device for a connecting member between an upper crossbeam and a column of a bending machine. Background Art

[0002] The upper frame of a bending machine is formed by splicing a crossbeam and columns connected to both ends thereof, and the crossbeam and the columns at both ends are commonly connected in the form of bolts. When connecting with bolts, in order to disperse the connection load, metal gaskets of the required type are usually sleeved outside the bolts. After stamping, a metal plate can form a metal annular stamping part as a gasket. These metal parts will have sharp edges during stamping, and there will also be problems with unqualified dimensions of the metal parts. Therefore, further deburring, trimming or rectifying is required to ensure the accuracy, quality and compliance of the metal parts with specifications. Currently, the trimming of metal parts is usually carried out manually by holding a trimming tool or by using a special metal trimming machine. However, some metal part trimming machines may only be able to trim specific types or sizes of metal parts and may not be applicable to other types of metal parts, which limits their application scope. Although manual trimming can achieve the trimming of different types of metal parts, it has very high requirements for the experience of the staff and can only complete the trimming work one by one, with low efficiency. Summary of the Invention

[0003] In order to overcome the problem that the existing metal part trimming machines can only trim specific types or specific sizes of metal parts, resulting in limitations in the use of the metal trimming machines and low trimming efficiency, the present invention provides a trimming device for a connecting member between an upper crossbeam and a column of a bending machine, aiming to enable the trimming equipment to meet the trimming of metal parts of the same type but different sizes, and at the same time, multiple metal parts can be trimmed, breaking the limitations in the use of the equipment and improving the production efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A trimming device for a connecting member between an upper crossbeam and a column of a bending machine, comprising a discharging unit. The discharging unit includes a material placing box body. A through opening is formed in one side wall of the material placing box body. A movable plate is slidably fitted in the opening. A plurality of connecting rods are provided at the top end of the movable plate. The top ends of the plurality of connecting rods penetrate through the top end of the opening and extend to the outside of the top end of the opening. A cross plate is connected to one end of each of the plurality of connecting rods away from the movable plate. First telescopic rods are respectively provided on both sides of the bottom end of the cross plate. One end of each first telescopic rod away from the cross plate is connected to the top end of the opening. A push plate is movably embedded in the side wall of the material placing box body opposite to the opening. The push plate is driven by a cylinder, and the cylinder is arranged on the outer wall of the side of the material placing box body where the push plate is embedded; On the side of the material placing box body with an opening, there is also a feeding and conveying unit. On the side of the feeding and conveying unit away from the material placing box body, there is a grinding unit, and on one side of the feeding and conveying unit, there is also a trimming unit.

[0005] Further, the feeding and conveying unit includes two oppositely arranged vertical plates. A conveyor belt is arranged between the two vertical plates. On the top of one of the vertical plates close to the trimming unit, a first robotic arm and a second robotic arm are respectively arranged. Mechanical grippers are respectively arranged at the ends of the first robotic arm and the second robotic arm. A third robotic arm is arranged on the top of the other vertical plate, and a hole diameter gauge is arranged at the end of the third robotic arm. An outer diameter detection mechanism is also arranged on the tops of the two vertical plates.

[0006] Further, the outer diameter detection mechanism includes two electric rotating rods respectively arranged on the two vertical plates. Fixed plates are connected to the tops of the two electric rotating rods. The ends of the two fixed plates away from the electric rotating rods are in contact with each other. A number of driving wheels are evenly arranged and movably arranged at the bottoms of the two fixed plates. A guiding plate is hinged to the side of one end of the two fixed plates away from the electric rotating rods. The end of the guiding plate away from the fixed plate extends towards the end of the conveyor belt away from the material placing box body.

[0007] Further, the grinding unit includes two oppositely arranged base plates. A number of first polishing rollers are movably installed between the tops of the two base plates through two oppositely arranged first mounting plates. The number of first polishing rollers is perpendicular to the two first mounting plates. A first transition plate is inclined between the tops of the two first mounting plates on the side close to the feeding and conveying unit. One side of the top of the first transition plate is located below the conveyor belt. A second transition plate is inclined between the bottoms of the two first mounting plates on the side away from the feeding and conveying unit. Support plates are respectively arranged on the tops of the two base plates. A top plate is erected on the tops of the two support plates. A flat plate is connected to the bottom end of the top plate through a number of second telescopic rods. Second mounting plates are arranged on both sides of the bottom end of the flat plate. A number of second polishing rollers are evenly arranged and movably installed between the two second mounting plates. The second polishing rollers are arranged parallel to the first polishing rollers.

[0008] Further, the trimming unit includes a bottom plate. Side plates are arranged on both sides of the top of the bottom plate. A number of third telescopic rods are evenly arranged on the opposite sides of the two side plates. Trimming blocks are arranged at the ends of the number of third telescopic rods away from the side plates. The trimming blocks are slidably arranged on the bottom plate. A trimming mechanism is arranged between every two opposite trimming blocks. The trimming mechanism is movably arranged on the bottom plate.

[0009] Further, the trimming mechanism includes an electric turntable, which is movably embedded in the bottom plate. A fourth telescopic rod is provided at the top of the electric turntable, and a fixed block is connected to the top of the fourth telescopic rod. A number of support plates are evenly and detachably arranged along the circumference of the fixed block, and a number of fifth telescopic rods are also arranged along the circumference of the fixed block. A number of the fifth telescopic rods are all located above the support plates, and one end of each of the fifth telescopic rods away from the fixed block is connected with an elastic soft pad, and a sandpaper is detachably arranged on one side of the elastic soft pad away from the fifth telescopic rod.

[0010] Further, an inner ring cutting mechanism is also provided at the top of the fixed block. The inner ring cutting mechanism includes a sixth telescopic rod, and a number of seventh telescopic rods are evenly arranged along the circumference at one end of the sixth telescopic rod away from the fixed block. One end of each of the seventh telescopic rods away from the sixth telescopic rod is connected with a first cutting blade.

[0011] Further, a sanding surface is provided at the bottom of one side of the trimming block away from the third telescopic rod, and a clamping and grinding mechanism is provided at the top of one side of the trimming block away from the third telescopic rod. The clamping and grinding mechanism includes a vertically arranged slide rail, and two sliders are slidably fitted on the slide rail and distributed up and down. One side of each of the two sliders away from the slide rail is connected with a grinding block through an eighth telescopic rod, and a second cutting blade is detachably arranged between the two grinding blocks.

[0012] Further, clamping columns are arranged on both sides of one end of the second cutting blade, and clamping holes adapted to be clamped with the clamping columns are formed in one side of the grinding block away from the eighth telescopic rod.

[0013] Advantages of the present invention: (1) By providing a discharging unit and a feeding and conveying unit, it can ensure that the dimensions of each metal part in the same batch can be detected. Compared with the traditional sampling inspection, the qualified rate is higher. (2) By providing a trimming unit, and the trimming unit includes a number of trimming blocks and a trimming mechanism, it can meet the requirement of trimming multiple metal parts simultaneously, improving the production efficiency. Moreover, each pair of trimming blocks and the trimming mechanism therebetween are independent of each other. Therefore, in the trimming unit, the trimming of the inner diameter dimension or the outer diameter dimension of the metal part can be realized simultaneously, and it is no longer necessary to complete the trimming one by one manually, which not only improves the trimming accuracy but also the trimming efficiency. (3) The outer diameter detection mechanism, the inner diameter rail and the trimming mechanism in the present invention are all designed to be adjustable, which can meet the dimension detection and trimming work of metal gaskets with different specifications and sizes, improving the practicability of the device. Description of the Drawings

[0014] For the convenience of those skilled in the art to understand, the present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 Schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 is Figure 1 partial enlarged view at A in Figure 3 Schematic diagram of the three-dimensional structure of the trimming mechanism in the present invention; Figure 4 Exploded view of the three-dimensional structure of the grinding unit in the present invention; Figure 5 Schematic diagram of the three-dimensional structure of a working state of the trimming unit in the present invention; Figure 6 Schematic diagram of the three-dimensional structure of another working state of the trimming unit in the present invention; Figure 7 Schematic diagram of the three-dimensional structure of another working state of the trimming unit in the present invention; Figure 8 Schematic diagram of the three-dimensional structure of another working state of the trimming unit in the present invention.

[0016] In the figure: 1. Discharging unit; 11. Material placing box body; 12. Cylinder; 13. Push plate; 14. Opening; 15. Movable plate; 16. Connecting rod; 17. Cross plate; 18. First telescopic rod; 2. Conveying unit; 21. Conveyor belt; 22. Vertical plate; 23. First robotic arm; 24. Second robotic arm; 25. Third robotic arm; 250. Hole diameter gauge; 26. Outer diameter detection mechanism; 261. Electric rotating rod; 262. Fixed plate; 263. Driving wheel; 264. Guide plate; 3. Grinding unit; 31. Substrate; 32. First mounting plate; 320. First polishing roller; 33. Second mounting plate; 330. Second polishing roller; 331. Second telescopic rod; 332. Flat plate; 34. Support plate; 35. Top plate; 36. Second transition plate; 37. First transition plate; 4. Trimming unit; 41. Bottom plate; 42. Side plate; 43. Trimming mechanism; 431. Electric turntable; 432. Fourth telescopic rod; 433. Fixed block; 434. Support plate; 435. Fifth telescopic rod; 436. Elastic soft pad; 437. Inner ring cutting mechanism; 4371. Sixth telescopic rod; 4372. Seventh telescopic rod; 4373. First cutting blade; 44. Trimming block; 440. Third telescopic rod; 441. Clamping and grinding mechanism; 4410. Slide rail; 4411. Slide block; 4413. Eighth telescopic rod; 4414. Grinding block; 442. Second cutting blade; 4420. Clamping post; 443. Frosted surface. Specific embodiments

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0018] Referring to Figure 1-8 , the present invention is a trimming device for the connecting piece between the upper crossbeam and the column of a bending machine, which mainly performs size detection, trimming, and surface grinding on circular metal gaskets of different sizes. Since the surface of metal parts may be uneven, burrs or defects after stamping, it is necessary to make the surface of the metal parts flat and smooth through grinding and polishing processes. Moreover, the edges of the metal parts may be burrs, sharp or irregular, and these burrs at the edges may also cause the inner and outer diameter sizes of the metal parts to not meet the production requirements. Usually, further turning and grinding are required to adjust the size. Currently, for a batch of metal parts, sampling inspection is usually used to judge the qualification of the metal parts. This will inevitably lead to the mixing of unqualified parts in the metal parts, and the measurement of the size of the metal parts is carried out by manually holding a caliper, which is time-consuming, laborious and inefficient. The trimming of unqualified parts also requires experienced staff to carefully adjust the size with a file, with complex operations and low efficiency; A trimming device for the connecting piece between the upper crossbeam and the column of a bending machine according to the present invention includes a discharging unit 1. The discharging unit 1 is used to sequentially push a batch of stamped metal parts to the inspection unit 2 for detecting the inner and outer diameter sizes of the metal parts. The discharging unit 1 includes a material placing box body 11. A through opening 14 is formed on one side wall of the material placing box body 11. The inspection unit 2 is also provided on the side of the material placing box body 11 where the opening 14 is located. A grinding unit 3 is provided on the side of the inspection unit 2 away from the material placing box body 11, and a trimming unit 4 is also provided on one side of the inspection unit 2; Among them, a movable plate 15 is slidably and adaptively arranged in the opening 14. A plurality of connecting rods 16 are arranged at the top end of the movable plate 15. The top ends of the plurality of connecting rods 16 pass through the top end of the opening 14 and extend to the outside of the top end of the opening 14. A transverse plate 17 is connected to one end of each of the plurality of connecting rods 16 away from the movable plate 15. First telescopic rods 18 are respectively arranged on both sides of the bottom end of the transverse plate 17. One end of each first telescopic rod 18 away from the transverse plate 17 is connected to the top end of the opening 14. A push plate 13 is movably embedded in a side wall of the material placing box body 11 opposite to the opening 14. The push plate 13 is driven by a cylinder 12. The cylinder 12 is arranged on an outer wall of the side of the material placing box body 11 where the push plate 13 is embedded. The material placing box body 11 is used for centrally placing the stamped metal parts. Then, according to the thickness of the metal parts, the height of the movable plate 15 is adjusted by driving the telescopic movement of the first telescopic rods 18, ensuring that the gap between the movable plate 15 and the bottom end of the material placing box body 11 is greater than the thickness of one metal part and less than the thickness of two superimposed metal parts. In this way, under the pushing action of the push plate 13, it can be ensured that the metal gaskets do not overlap during each discharging process, which may cause inconvenience in subsequent dimensional inspection work; The metal parts pushed out from the material placing box body 11 will fall onto the inspection and feeding unit 2. Specifically, the inspection and feeding unit 2 includes two oppositely arranged vertical plates 22. A conveyor belt 21 is arranged between the two vertical plates 22. The conveyor belt 21 is driven by two rotating rollers (not shown in the figure) to rotate in a cycle. A first robotic arm 23 and a second robotic arm 24 are respectively arranged on the top end of one vertical plate 22 close to the trimming unit 4. Mechanical grippers are respectively arranged at the end parts of the first robotic arm 23 and the second robotic arm 24. A third robotic arm 25 is arranged on the top end of the other vertical plate 22. The third robotic arm 25 is symmetrically arranged with the second robotic arm 24. A hole diameter gauge 250 is arranged at the end part of the third robotic arm 25. The hole diameter gauge 250 is used for detecting the inner diameter size of the metal gasket. Among them, the signal output end of the hole diameter gauge 250 is connected to the signal input end of the second robotic arm 24. When the hole diameter gauge 250 detects a metal part with an unqualified inner diameter size, it sends a signal to the second robotic arm 24, and the mechanical gripper of the second robotic arm 24 grabs and transfers the metal part with an unqualified inner diameter to the trimming unit 4. An outer diameter detection mechanism 26 is also arranged on the top ends of the two vertical plates 22; Specifically, the outer diameter detection mechanism 26 includes two symmetrically arranged electric rotating rods 261 respectively disposed on two vertical plates 22. One of the electric rotating rods 261 is located between the first robotic arm 23 and the second robotic arm 24. The tops of the two electric rotating rods 261 are both connected with fixing plates 262. The ends of the two fixing plates 262 away from the electric rotating rods 261 are in contact with each other. By controlling the rotation of the two electric rotating rods 261, the angles of the two fixing plates 262 can be adjusted, and then the distance between the ends of the two fixing plates 262 on the side away from the electric rotating rods 261 can be adjusted. The setting of the distance is adjusted according to the qualified outer diameter size of metal parts of different specifications. If a metal part can smoothly pass through the distance between the two fixing plates 262, it is regarded as qualified for the outer diameter of the metal part. If the metal part gets stuck between the two fixing plates 262 and cannot pass through smoothly, it is regarded as unqualified for the outer diameter size. Infrared sensors are provided at the bottom ends of the opposite sides of the two fixing plates 262. The signal output ends of the infrared sensors are respectively connected to the signal input ends of the third robotic arm 25 and the first robotic arm 23. When the infrared sensors continuously sense the presence of the metal part within the set time, a signal is sent to the first robotic arm 23, and the first robotic arm 23 will grab and move the metal part with unqualified outer diameter size to the trimming unit 4 for trimming and grinding of the outer diameter size; Driven by the conveyor belt 21, the metal parts pushed out from the feeding box body 11 gradually approach the outer diameter detection mechanism 26. To avoid the situation where the metal parts are stuck at the bottom edge of the fixing plate 262, resulting in congestion between the surface of the conveyor belt 21 and the fixing plates 262 and affecting the smooth progress of the detection work, a number of driving wheels 263 are evenly arranged and movably provided at the bottom ends of the two fixing plates 262. The number of driving wheels 263 is driven to rotate in the same direction by a number of motors (not shown in the figure). Driven by the driving wheels 263, the metal parts will be gradually moved into the gap between the two fixing plates 262 to measure the outer diameter of the metal parts. To facilitate the subsequent detection of the inner diameter size of the metal parts with qualified outer diameter, guide plates 264 are hinged to the sides of the ends of the two fixing plates 262 away from the electric rotating rods 261. The ends of the guide plates 264 away from the fixing plates 262 extend to the end of the conveyor belt 21 away from the feeding box body 11. In this way, driven by the conveyor belt 21, the metal parts with qualified outer diameter will slowly move along between the two guide plates 246 and pass through the inner diameter gauge 250 during the movement to detect the inner diameter of the metal parts. Those with qualified inner diameter size will smoothly slide through the first transition plate 37 and enter the grinding unit 3. After the final grinding and polishing process, by setting the discharging unit 1 and the inspection and conveying unit 2, the size of each metal part in a batch can be detected, and the yield rate is higher compared with the traditional sampling inspection; The grinding unit 3 includes two relatively arranged substrates 31. Between the tops of the two substrates 31, a number of first polishing rollers 320 are movably installed through two relatively arranged first mounting plates 32. The number of first polishing rollers 320 and the two first mounting plates 32 are arranged perpendicular to each other. And support plates 34 are respectively arranged at the tops of the two substrates 31. A top plate 35 is erected on the tops of the two support plates 34. The bottom end of the top plate 35 is connected to a flat plate 332 through a number of second telescopic rods 331. Second mounting plates 33 are arranged on both sides of the bottom end of the flat plate 332. A number of second polishing rollers 330 are evenly arranged and movably installed between the two second mounting plates 33. The second polishing rollers 330 and the first polishing rollers 320 are arranged parallel to each other. The distance between the number of first polishing rollers 320 and the number of second polishing rollers 330 can be adjusted according to the thickness of metal parts of different specifications, ensuring that both sides of the metal parts can be fully ground and polished. When the first polishing rollers 320 and the second polishing rollers 330 rotate, they also drive a number of metal parts to move in the grinding unit 3 until they are discharged from the end of the grinding unit 3 close to the second transition plate 36, that is, the grinding and polishing process of the metal parts is completed. The setting of the number of first grinding rollers 329 and the number of second grinding rollers 330 can realize the grinding and polishing of multiple metal parts at one time, greatly improving the production efficiency; For metal parts with unqualified outer diameter or inner diameter dimensions, the size will be trimmed in the trimming unit 4. Specifically, the trimming unit 4 includes a bottom plate 41. On both sides of the top end of the bottom plate 41, side plates 42 are provided. On one side of the two side plates 42 facing each other, a number of third telescopic rods 440 are evenly arranged. At the end of each of the number of third telescopic rods 440 away from the side plate 42, a trimming block 44 is provided. The number of trimming blocks 44 are all slidably arranged on the bottom plate 41. A trimming mechanism 43 is provided between each pair of opposite trimming blocks 44. The trimming mechanism 43 is movably arranged on the bottom plate 41. By setting the number of trimming blocks 44 and the trimming mechanism 43, the trimming work of multiple metal parts can be satisfied simultaneously, improving the production efficiency. And each pair of trimming blocks 44 and the trimming mechanism 43 therebetween are independent of each other. Therefore, in the trimming unit 4, the trimming of the inner diameter size or the outer diameter size of the metal parts can be realized simultaneously, and there is no need to complete the trimming one by one manually, which not only improves the trimming accuracy but also improves the trimming efficiency; Among them, the trimming mechanism 43 includes an electric turntable 431, which is movably embedded in the bottom plate 41. A fourth telescopic rod 432 is provided at the top of the electric turntable 431. The top of the fourth telescopic rod 432 is connected to a fixed block 433. A number of support plates 434 are evenly arranged along the circumference of the fixed block 433. A number of fifth telescopic rods 435 are also arranged along the circumference of the fixed block 433. A number of fifth telescopic rods 435 are all located above the support plates 434. One end of each of the number of fifth telescopic rods 435 away from the fixed block 433 is connected to an elastic soft pad 436. A sandpaper is detachably arranged on one side of the elastic soft pad 436 away from the fifth telescopic rod 435, which facilitates timely replacement of the sandpaper and ensures the polishing effect. An inner ring cutting mechanism 437 is further provided at the top of the fixed block 433. The inner ring cutting mechanism 437 includes a sixth telescopic rod 4371. A number of seventh telescopic rods 4372 are evenly arranged along the circumference at one end of the sixth telescopic rod 4371 away from the fixed block 433. One end of each of the number of seventh telescopic rods 4372 away from the sixth telescopic rod 4371 is connected to a first cutting blade 4373. A grinding surface 443 is provided at the bottom of one side of the trimming block 44 away from the third telescopic rod 440. A grinding clamping mechanism 441 is provided at the top of one side of the trimming block 44 away from the third telescopic rod 440. The grinding clamping mechanism 441 includes a vertically arranged slide rail 4410. Two vertically distributed sliders 4411 are slidably fitted on the slide rail 4410. One side of each of the two sliders 4411 away from the slide rail 4410 is connected to a grinding block 4414 through an eighth telescopic rod 4413. A second cutting blade 442 is detachably arranged between the two grinding blocks 4414. Clamping columns 4420 are arranged on both sides of one end of the second cutting blade 442. A clamping hole adapted to be clamped with the clamping column 4420 is formed on one side of the grinding block 4414 away from the eighth telescopic rod 4413. The first embodiment When the size of a metal part with an unqualified outer diameter needs to be trimmed, first, the second cutting blade 442 is clamped between the two grinding blocks 4414, as Figure 6As shown, under the grasping and driving of the mechanical gripper of the first robotic arm 23, the metal piece with unqualified outer diameter size is sleeved onto the trimming mechanism 43, and the bottom of the metal piece contacts several support plates 434 on the circumference of the fixed block 433. After the placement is completed, the fifth telescopic rod 435 is driven to drive the elastic soft pad 436 to move circumferentially towards the inner circle of the metal piece and make interference contact with the metal piece. As a result, there is a certain frictional force between the metal piece and several elastic soft pads 436, so that the position of the metal piece is fixed. Then, the fourth telescopic rod 432 is driven to extend, driving the metal piece to move upward until it is flush with the two opposite second cutting blades 442. Then, by simultaneously driving the third telescopic rod 440, the two opposite trimming blocks 44 are driven to move towards the metal piece until they abut against the outer circumference of the metal piece. At this time, the electric turntable 431 is controlled to rotate. At the same time, the two grinding blocks 44 also slowly move towards the metal piece until the distance between the cutting edges on the opposite sides of the two second cutting blades 422 is exactly adjusted within the range of qualified outer diameter values. In this way, it can be ensured that when the electric turntable 431 drives the metal piece to rotate and contacts the two second cutting blades 422, the size adjustment of the metal piece can be completed. After the outer diameter size cutting adjustment is completed, there will be many burrs on the edge. At this time, the fourth telescopic rod 432 is driven to shorten, as Figure 5 shown, driving the metal piece to move to the area of the abrasive surface 443 provided by the trimming block 44. At the same time, the fourth telescopic rod 440 is driven to extend, driving the trimming block 44 to move further towards the metal piece until the abrasive surface 443 abuts against the outer circumference of the metal piece. At this time, the electric turntable 431 is driven to rotate again, so as to realize the deburring of the outer circumference of the metal piece. The metal piece with the outer diameter trimmed will be transferred to the conveyor belt 21 again by the first robotic arm 23 to continue the outer diameter detection and inner diameter detection; Second Embodiment As Figure 7 、 Figure 8As shown in the figure, when it is necessary to trim a metal part with unqualified inner diameter size, the mechanical gripper of the second robotic arm 24 is used to transfer the detected metal part with unqualified inner diameter size above the trimming mechanism 43. At this time, the third telescopic rod 440 is driven to extend, driving the two trimming blocks 44 to move towards each other. While the two trimming blocks 44 are moving, the positions of the two sliders 4411 on the clamping and grinding mechanism 441 are adjusted, thereby driving the upper and lower grinding blocks 4414 to clamp the metal part. After the clamping mechanisms 441 on both sides complete the clamping and fixing of the metal part, the sixth telescopic rod 4371 is driven until a plurality of first cutting blades 4373 circumferentially arranged on the sixth telescopic rod 4371 are flush with the inner ring of the metal part. Then, the seventh telescopic rod 4372 is driven to extend until the cutting head side of the first cutting blade 4373 abuts against the inner ring of the metal part. By driving the electric turntable 431 to rotate, the first cutting blade 4373 is driven to cut the excess part of the inner ring of the metal part. While rotating and cutting, the first cutting blade 4373 slowly extends until the distance between the cutting heads of the two first cutting blades 4373 on the same straight line is exactly adjusted within the range of the qualified inner diameter value, so as to ensure the completion of the trimming of the inner diameter of the metal part. After the cutting adjustment of the inner diameter size is completed, there will be many burrs on the edge and they are relatively sharp, and further grinding is required. Specifically, the seventh telescopic rod 4372 and the sixth telescopic rod 4371 are controlled to shorten simultaneously. At the same time, the fourth telescopic rod 432 is driven to extend until the elastic cushion 436 falls into the inner ring of the metal part. Then, the fifth telescopic rod 435 is driven to extend, so that the side of the elastic cushion 436 provided with sandpaper abuts against the inner ring of the metal part. At this time, the electric turntable 431 is driven to rotate, and the sandpaper provided on the surface of the elastic cushion 436 is driven by the electric turntable 431 to grind the inner ring of the metal part to remove burrs, thereby completing the inner diameter trimming. The metal part that has completed the inner diameter trimming only needs to complete the final surface grinding and polishing to become a standard part. In order not to affect the normal operation of the production line, at this time, the fifth telescopic rod 435 is controlled to extend further so that the elastic cushion 436 is in interference contact with the metal part to fix the position of the metal part. In order to facilitate the grinding and polishing of the upper and lower surfaces of the metal part, several support plates 434 are removed. At this time, the rotation of the electric turntable 431 drives the rotation of the metal part, and at the same time, the repeated telescopic movement of several eighth telescopic rods 4413 is coordinated to drive the grinding block 4414 to pass through every part of the surface of the metal part, thereby ensuring that the metal part is fully ground and polished. After the grinding is completed, the staff can take it down; Third Embodiment When the outer diameter of the metal part is detected by the outer diameter detection mechanism 26, if the metal part gets stuck between the two fixing plates 262 and cannot pass through smoothly, it is regarded as unqualified in outer diameter size. At this time, the infrared sensors at the bottom of the fixing plates 262 continuously sense the presence of the metal part within the set time. In this embodiment, the signal output ends of the infrared sensors are respectively connected to the signal input ends of the third robotic arm 25 and the first robotic arm 23, and the second robotic arm 24 is not provided in this embodiment. Since there is a metal part blocking between the two fixing plates 262, other metal parts cannot pass through between the two fixing plates 262. At this time, the signal output end of the infrared sensor sends a signal to the third robotic arm 25 to control the internal diameter gauge 250 to detect the internal diameter of the metal part stuck between the two fixing plates 262. If the internal diameter is qualified at this time, the first robotic arm 23 grabs and transfers the metal part to the trimming unit 4, and only the outer diameter size of the metal part needs to be trimmed. The specific work of trimming the outer diameter of the metal part is based on the content described in the first embodiment. After the outer diameter trimming is completed, in order to improve efficiency and avoid the repeated grasping of the first robotic arm 23, the trimming unit 4 can be used to polish the internal diameter and surface of the metal part at the same time, and the polishing work of the metal part on the trimming unit 4 can be completed in one step. Similarly, if the internal diameter gauge 250 detects that the internal diameter size of the metal part with unqualified outer diameter is also unqualified, the first robotic arm 23 grabs and transfers the metal part to the trimming unit 4, and the outer diameter and internal diameter of the metal part are trimmed and polished respectively based on the specific operations described in the first embodiment and the second embodiment, and the surface of the metal part is polished at the same time. Compared with the step-by-step work of detecting, trimming, and then transferring the metal part back to the conveyor belt 21 for internal diameter detection and polishing, this embodiment can, on the one hand, realize the simultaneous detection of the inner and outer diameters of the metal part, and complete the trimming and polishing work of the inner and outer diameters of the metal part on the trimming unit 4 in one step, with higher efficiency. Moreover, the cancellation of the second robotic arm 24 also saves the production cost of the equipment.

[0019] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A finishing device for connecting a crossbeam and a column on a bending machine, characterized in that: The present invention comprises a discharging unit (1), wherein the discharging unit (1) comprises a material storage box (11), a side wall of the material storage box (11) is provided with a through opening (14), a movable plate (15) is slidably fitted in the opening (14), a plurality of connecting rods (16) are provided at the top of the movable plate (15), the tops of the plurality of connecting rods (16) are passed through the top of the opening (14) and extend to the outside of the top of the opening (14), and the ends of the plurality of connecting rods (16) away from the movable plate (15) are all A horizontal plate (17) is connected, and first telescopic rods (18) are respectively provided on both sides of the bottom end of the horizontal plate (17), and one end of the first telescopic rod (18) away from the horizontal plate (17) is connected to the top of the opening (14), and a push plate (13) is movably embedded in a side wall of the material storage box (11) opposite to the opening (14), and the push plate (13) is driven by a cylinder (12), and the cylinder (12) is arranged on an outer wall of one side of the material storage box (11) where the push plate (13) is embedded; A side of the material storage box (11) having an opening (14) is also provided with a conveying unit (2), a side of the conveying unit (2) away from the material storage box (11) is provided with a grinding unit (3), and a side of the conveying unit (2) is also provided with a trimming unit (4).

2. A device for trimming the connecting piece between the cross beam and the column on a bending machine according to claim 1, characterized in that: The inspection unit (2) comprises two vertical plates (22) arranged opposite to each other, a conveyor belt (21) is arranged between the two vertical plates (22), and a first mechanical arm (23) and a second mechanical arm (24) are arranged on the top of one of the vertical plates (22) close to the trimming unit (4), and mechanical grippers are arranged at the ends of the first mechanical arm (23) and the second mechanical arm (24), respectively. A third mechanical arm (25) is arranged on the top of the other vertical plate (22), and an aperture gauge (250) is arranged at the end of the third mechanical arm (25). External diameter detection mechanisms (26) are also arranged on the tops of the two vertical plates (22).

3. A device for trimming the connecting piece between the cross beam and the column on a bending machine according to claim 2, characterized in that: The outer diameter detection mechanism (26) comprises two electric rotating rods (261) respectively arranged on the two vertical plates (22); the top ends of the two electric rotating rods (261) are connected to a fixed plate (262); the ends of the two fixed plates (262) away from the electric rotating rods (261) are in contact with each other; the bottom ends of the two fixed plates (262) are evenly arranged and movably provided with a plurality of transmission wheels (263); the sides of the ends of the two fixed plates (262) away from the electric rotating rods (261) are hingedly connected to a guide plate (264); the end of the guide plate (264) away from the fixed plate (262) extends toward the end of the conveyor belt (21) away from the material storage box (11).

4. A trimming device for connecting a cross beam and a column on a bending machine according to claim 2, characterized in that: The polishing unit (3) comprises two oppositely arranged base plates (31), a plurality of first polishing rollers (320) are movably mounted between the top ends of the two base plates (31) via two oppositely arranged first mounting plates (32), the plurality of first polishing rollers (320) and the two first mounting plates (32) are arranged perpendicular to each other, a first transition plate (37) is also obliquely arranged between the top ends of the two first mounting plates (32) on one side close to the inspection unit (2), the top end side of the first transition plate (37) is located below the conveyor belt (21), and the two first mounting plates (32) are away from the inspection unit A second transition plate (36) is also obliquely arranged between the bottom ends of one side of (2), support plates (34) are respectively arranged at the top ends of the two base plates (31), a top plate (35) is mounted on the top ends of the two support plates (34), the bottom ends of the top plates (35) are connected to a flat plate (332) via a plurality of second telescopic rods (331), second mounting plates (33) are arranged on both sides of the bottom ends of the flat plates (332), a plurality of second polishing rollers (330) are evenly arranged and movably mounted between the two second mounting plates (33), and the second polishing rollers (330) and the first polishing rollers (320) are arranged parallel to each other.

5. The device for trimming the connecting piece between the cross beam and the column of a bending machine according to claim 1, characterized in that: The trimming unit (4) comprises a bottom plate (41), side plates (42) are provided on both sides of the top of the bottom plate (41), a plurality of third telescopic rods (440) are evenly arranged on opposite sides of the two side plates (42), a trimming block (44) is provided on one end of the plurality of third telescopic rods (440) away from the side plates (42), the trimming block (44) is slidably arranged on the bottom plate (41), a trimming mechanism (43) is provided between each two opposite trimming blocks (44), and the trimming mechanism (43) is movably arranged on the bottom plate (41).

6. A trimming device for connecting a cross beam and a column on a bending machine according to claim 5, characterized in that: The trimming mechanism (43) comprises an electric turntable (431), the electric turntable (431) being movably embedded in the bottom plate (41), and a fourth telescopic rod (432) being provided at the top of the electric turntable (431), and a fixed block (433) being connected to the top of the fourth telescopic rod (432), and the fixed block (433) being provided with a plurality of support plates (434) evenly and detachably arranged along the circumference, and the fixed block (433) being provided with a plurality of fifth telescopic rods (435) along the circumference, and the plurality of fifth telescopic rods (435) being all located above the support plates (434), and the ends of the plurality of fifth telescopic rods (435) being away from the fixed block (433) being connected to elastic pads (436), and the side of the elastic pad (436) being away from the fifth telescopic rods (435) being detachably provided with sandpaper.

7. A device for trimming the connecting piece between the cross beam and the column on a bending machine according to claim 6, characterized in that: An inner ring cutting mechanism (437) is also provided at the top of the fixed block (433), and the inner ring cutting mechanism (437) includes a sixth telescopic rod (4371), and a plurality of seventh telescopic rods (4372) are evenly arranged along the circumferential direction at one end of the sixth telescopic rod (4371) away from the fixed block (433), and the ends of the plurality of seventh telescopic rods (4372) away from the sixth telescopic rod (4371) are all connected to a first cutting blade (4373).

8. The device for trimming the connecting piece between the cross beam and the column of a bending machine according to claim 5, characterized in that: A frosted surface (443) is provided at the bottom of the trimming block (44) on the side away from the third telescopic rod (440), and a clamping and grinding mechanism (441) is provided at the top of the trimming block (44) on the side away from the third telescopic rod (440), and the clamping and grinding mechanism (441) includes a vertically arranged slide rail (4410), and two sliding blocks (4411) distributed up and down are slidably adapted on the slide rail (4410), and the two sliding blocks (4411) are connected to grinding blocks (4414) on the sides away from the slide rail (4410) through the eighth telescopic rod (4413), and a second cutting blade (442) is detachably arranged between the two grinding blocks (4414).

9. A device for trimming the connecting piece between the cross beam and the column on a bending machine according to claim 8, characterized in that: A clamping column (4420) is provided on both sides of one end of the second cutting blade (442), and a clamping hole adapted to be clamped with the clamping column (4420) is provided on a side of the grinding block (4414) away from the eighth telescopic rod (4413).

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