Turning equipment suitable for machining both ends of long graphite tubes

Abstract

The invention discloses a turning device suitable for processing both ends of a long graphite tube, and relates to the technical field of long graphite tube processing. The device comprises a device bed, wherein a first turning unit and a second turning unit are respectively arranged at two ends of the top of the device bed, a finished product storage rack, which is in two groups, and the two groups of finished product storage racks are respectively arranged at one side of the device bed near the first turning unit and the second turning unit, a workpiece fixing unit, wherein a plurality of groups of workpiece fixing units are evenly arranged on the top of the device bed, and a conveying unit, which is in two groups, and the two groups of conveying units are arranged at one side of the device bed; when processing the long graphite tube, the long graphite tube itself will not rotate, while the tools on the first turning unit and the second turning unit will rotate to turn the long graphite tube, so as to realize the processing of the ends of the long graphite tube, and the long graphite tube is clamped by the workpiece fixing unit to avoid the possible breakage of the graphite tube during the rotation process.

Description

Technical Field

[0001] The invention relates to the technical field of long graphite tube processing, in particular to a turning device suitable for processing both ends of a long graphite tube. Background Art

[0002] Graphite is a special non-metallic material that not only has good physical and mechanical properties and processing properties, but it has become a trend to use graphite heat exchangers to replace metal heat exchangers in future industrial heat exchange systems. Graphite tube components are important parts of graphite heat exchangers.

[0003] Traditionally, the processing of graphite tube components is carried out with the aid of standard CNC lathes. For example, a milling adjustment device for processing tube wall planes disclosed in Chinese patent publication number CN113600880A processes the graphite tube by rotating the graphite tube and moving the tool in a straight line. However, using this processing method, the surface of the graphite tube is scratched during the rotation process, and even potential cracks are caused during twisting, which does not meet the product use standards and has a short service life. Summary of the invention

[0004] In order to overcome the above technical problems, the purpose of the present invention is to provide a turning device suitable for processing both ends of a long graphite tube, so as to solve the problem in the prior art that when processing a long graphite tube, the graphite tube is rotated and the tool is moved linearly, resulting in scratches on the surface of the graphite tube during rotation and even potential cracks caused by twisting.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] Specifically, a turning device suitable for processing both ends of a long graphite tube is provided, including a device bed, on the top two ends of which are respectively provided with a first turning unit and a second turning unit; two groups of finished product storage racks, which are respectively arranged on one side of the device bed and close to the first turning unit and the second turning unit; several groups of workpiece fixing units, which are evenly arranged on the top of the device bed; two groups of conveying units, which are arranged on one side of the device bed, and graphite tube workpieces are stored on the conveying units, the first turning unit and the second turning unit automatically identify the center height of the graphite tube workpiece, and adjust the height of the workpiece fixing unit based on the center height of the graphite tube workpiece.

[0007] As a further solution of the present invention: the equipment bed includes a base body, a mounting seat is bolted to the top surface of one end of the base body close to the first turning unit, the mounting seat is connected to the first turning unit by bolts, a movable slide rail is installed at the other end of the top surface of the base body, a track platform is arranged on the top of the movable slide rail, and the track platform is connected to the second turning unit by bolts.

[0008] As a further solution of the present invention: the first turning unit and the second turning unit both include a slide, one end of the slide is bolted to a reducer A, the top of the reducer A is installed with a reducer B, the top of the reducer B is installed with a reducer C, the top of the slide is installed with a pneumatic slip ring, the end face of the pneumatic slip ring is installed with a centering mechanism, and a turning tool is arranged on one side of the centering mechanism.

[0009] As a further solution of the present invention: the centering mechanism includes a fixed plate, one side of the fixed plate is fixed to the end face of the pneumatic slip ring by bolts, the other side of the fixed plate is connected to a sliding sleeve at the center position, the end of the sliding sleeve away from the fixed plate is connected to a core shaft, the end of the core shaft away from the sliding sleeve is connected to a shaft sleeve, and the end of the shaft sleeve away from the core shaft is connected to a rubber inner support.

[0010] As a further solution of the present invention: the workpiece fixing unit includes a fixing platform, which is fixed to the top surface of the equipment bed by bolts, and the bottom surface of the fixing platform is bolted to an adjusting cylinder, and the adjusting cylinder is connected to the clamping platform by a long rod.

[0011] As a further solution of the present invention: the clamping platform includes a lifting platform, a top surface of one side of the lifting platform is bolted to a fixed seat, the top surface of the fixed seat is bolted to a clamping cylinder, the output end of the clamping cylinder is connected to a mounting arm, the end of the mounting arm away from the clamping cylinder is bolted to a first clamping block, the center position of the top surface of the lifting platform is bolted to a mounting plate, and the top surface of the mounting plate is bolted to a second clamping block.

[0012] As a further solution of the present invention: the conveying unit includes a conveying cabinet, a placement area is fixedly connected to one side of the top surface of the conveying cabinet, a lifting plate and a conveying area are installed in the middle position of the conveying cabinet, a lifting frame is arranged on the other side of the top surface of the conveying cabinet, a driving cylinder and a sliding rail are installed at both ends of the lifting frame, the conveying end of the driving cylinder is connected to the sliding frame, and the top surface of the sliding frame is fixedly connected to the placement frame.

[0013] As a further solution of the present invention: the top surfaces of the placement area, the lifting plate and the conveying area are all inclined.

[0014] As a further solution of the present invention: an image acquisition module is installed on the pneumatic slip ring, the image acquisition module is used to collect the end face image data of the graphite tube workpiece, the image acquisition module collects a historical training data set, the historical training data set includes N groups of historical training data, N is a positive integer, and a machine learning model for identifying the center height of the graphite tube workpiece is trained based on the historical training data set;

[0015] The image acquisition module collects the image data of the end face of the graphite tube in real time, and uses a machine learning model to identify the height of the center of the graphite tube workpiece based on the image data of the end face of the graphite tube.

[0016] As a further solution of the present invention: the training method of the machine learning model is:

[0017] The feature data in the historical training data is used as the input of the machine learning model. The height of the center of the graphite tube workpiece predicted by the machine learning model for the feature data is used as the output. The height of the center of the graphite tube workpiece in the label data corresponding to the feature data is used as the prediction target. The training target is to minimize the sum of all prediction accuracies. The calculation formula for prediction accuracy is ui=(ai-ci) 2 , where ui is the prediction accuracy, ai is the predicted height of the center of the graphite tube workpiece corresponding to the feature data in the i-th group of historical training data, ci is the height of the center of the graphite tube workpiece in the label data corresponding to the feature data in the i-th group of historical training data, and the training is stopped when the sum of the prediction accuracies reaches convergence.

[0018] Beneficial effects of the present invention:

[0019] In the present invention, a plurality of groups of workpiece fixing units arranged on the top of the equipment bed can fix and clamp the graphite tube workpiece, so that when processing the graphite tube workpiece, the graphite tube workpiece itself will not rotate, and the tools on the first turning unit and the second turning unit will rotate and turn the graphite tube workpiece to achieve processing of the end of the graphite tube workpiece. The graphite tube workpiece is clamped by the workpiece fixing unit to avoid possible breakage of the graphite tube during rotation.

[0020] In the present invention, the rubber inner support is divided into four fan-shaped rubber blocks of the same size, and the fan-shaped rubber blocks can slide on the end surface of the sleeve. A pull rod is inserted into the interior of the sleeve, and one end of the pull rod close to the rubber inner support is enlarged. The other end of the pull rod is connected to a cylinder, which can drive the pull rod after starting to move the pull rod inside the sleeve. When the pull rod moves inside the sleeve, one end of the pull rod will squeeze the fan-shaped rubber block, so that the fan-shaped rubber block moves to a position away from the center of the end surface of the sleeve, so that it can be squeezed into the interior of the graphite tube workpiece, thereby realizing automatic centering of the graphite tube workpiece, ensuring that the graphite tube workpiece is more stable and will not vibrate during the process of machining the graphite tube workpiece by the turning tool, thereby improving the effect of the turning tool on the graphite tube workpiece.

[0021] In the present invention, the placement area is composed of a plurality of inclined vertical plates, and the graphite tube workpiece can be horizontally laid on the top surface of the vertical plate. Since the top surface of the vertical plate is inclined, after the innermost graphite tube workpiece is taken out, the subsequent graphite tube workpiece can be automatically rolled and filled. Since the top surface of the lifting plate is inclined, the graphite tube workpiece will not slide from the top surface of the lifting plate during the movement of the lifting plate. When the top surface of the lifting plate rises to be flush with the top surface of the conveying area, the graphite tube workpiece will automatically roll from the top surface of the lifting plate to the top surface of the conveying area. Since the top surface of the conveying area is also inclined, the graphite tube workpiece rolled to the top surface of the conveying area will continue to roll and finally stay on the top surface of the placement rack, thereby realizing the automatic supply of the graphite tube workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings:

[0023] Figure 1 It is a structural schematic diagram of a turning device suitable for processing both ends of a long graphite tube according to the present invention;

[0024] Figure 2 It is a structural schematic diagram of the equipment bed in the present invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of the first turning unit and the second turning unit in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the centering mechanism in the present invention;

[0027] Figure 5 is a cross-sectional view of the centering mechanism of the present invention;

[0028] Figure 6 It is a structural schematic diagram of a workpiece fixing unit in the present invention;

[0029] Figure 7 It is a structural schematic diagram of the clamping platform in the present invention;

[0030] Figure 8 It is a structural schematic diagram of the conveying unit in the present invention.

[0031] Figure numerals: 1. Equipment bed; 11. Base body; 12. Mounting seat; 13. Moving slide rail; 14. Track platform; 2. First turning unit; 21. Slide; 22. Reducer A; 23. Reducer B; 24. Reducer C; 25. Pneumatic slip ring; 26. Turning tool; 27. Centering mechanism; 271. Fixed plate; 2711. Bearing; 272. Sliding sleeve; 273. Mandrel; 274. Bushing; 275. Rubber inner support; 276. Pull rod; 28. Graphite tube workpiece; 3. Finished product storage rack; 4. Second Turning unit; 5. Workpiece fixing unit; 51. Fixing platform; 52. Adjusting cylinder; 53. Telescopic rod; 54. Clamping platform; 541. Lifting platform; 542. Fixing seat; 543. Clamping cylinder; 544. Mounting arm; 545. First clamping block; 546. Mounting plate; 547. Second clamping block; 6. Conveying unit; 61. Conveying cabinet; 62. Placement area; 63. Lifting plate; 64. Conveying area; 65. Lifting frame; 66. Driving cylinder; 67. Sliding track; 68. Sliding frame; 69. Placement frame. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1

[0034] like Figure 1-Figure 8 As shown, the present invention discloses a high-efficiency flexible device suitable for processing both ends of a graphite tube workpiece, comprising a device bed 1, with a first turning unit 2 and a second turning unit 4 respectively arranged at both ends of the top; a finished product storage rack 3, which is in two groups, and the two groups of finished product storage racks 3 are respectively arranged on one side of the device bed 1 near the first turning unit 2 and the second turning unit 4; a workpiece fixing unit 5, which is in several groups, and the several groups of workpiece fixing units 5 are evenly arranged on the top of the device bed 1; a conveying unit 6, which is in two groups, and the two groups of conveying units 6 are arranged on one side of the device bed 1;

[0035] It should be noted that the first turning unit 2 and the second turning unit 4 are respectively arranged at the two ends of the equipment bed 1, wherein the first turning unit 2 is fixed at one end of the equipment bed 1, and the second turning unit 4 can move on the top surface of the equipment bed 1, so that the second turning unit 4 can cooperate with the first turning unit 2 and process graphite tube workpieces 28 of different sizes. When the first turning unit 2 and the second turning unit 4 process the graphite tube workpiece 28, a plurality of groups of workpiece fixing units 5 arranged on the top of the equipment bed 1 can fix and clamp the graphite tube workpiece 28, so that when processing the graphite tube workpiece 28, the graphite tube workpiece 28 itself will not rotate, and the tools on the first turning unit 2 and the second turning unit 4 will rotate to turn the graphite tube workpiece 28, so as to realize the processing of the end of the graphite tube workpiece 28, and the processed graphite tube workpiece 28 can be docked according to the actual installation needs;

[0036] It should also be noted that the graphite tube workpiece 28 is clamped by the workpiece fixing unit 5 to avoid possible breakage of the graphite tube workpiece 28 during the rotation process.

[0037] like Figure 1 and Figure 2 As shown, the equipment bed 1 includes a base body 11, a mounting seat 12 is bolted to the top surface of one end of the base body 11 close to the first turning unit 2, the mounting seat 12 is connected to the first turning unit 2 by bolts, a movable slide rail 13 is installed at the other end of the top surface of the base body 11, a track platform 14 is arranged on the top of the movable slide rail 13, and the track platform 14 is connected to the second turning unit 4 by bolts;

[0038] It should be noted that, since the mounting seat 12 is connected to the first turning unit 2 by bolts, the first turning unit 2 is fixed to one end of the base body 11 by the mounting seat 12, and the track platform 14 is matched with the movable slide rail 13 to ensure that the track platform 14 can slide freely along the track direction on the movable slide rail 13. Since the track platform 14 is connected to the second turning unit 4 by bolts, the track platform 14 can drive the second turning unit 4 to slide freely along the track direction on the movable slide rail 13, thereby realizing the adjustment of the position of the second turning unit 4. A servo motor can be installed on the track platform 14, and the output shaft of the servo motor is connected to the driving gear. A gear groove matching the driving gear is provided on the movable slide rail 13 near the driving gear to ensure that the driving gear is meshed with the gear groove. In this way, when the servo motor is turned on, the servo motor can drive the driving gear to rotate through the output shaft, and the rotating driving gear can cooperate with the gear groove on the movable slide rail 13 to realize the free sliding of the track platform 14 on the movable slide rail 13.

[0039] like Figure 3As shown, the first turning unit 2 and the second turning unit 4 both include a slide 21, one end of the slide 21 is bolted to a reducer A22, a reducer B23 is installed on the top of the reducer A22, a reducer C24 is installed on the top of the reducer B23, a pneumatic slip ring 25 is installed on the top of the slide 21, a centering mechanism 27 is installed on the end face of the pneumatic slip ring 25, and a turning tool 26 is arranged on one side of the centering mechanism 27. It should be noted that the slide 21 is used to control the position of the pneumatic slip ring 25. Specifically, a lead screw is installed inside the slide 21, one end of the lead screw is connected to the output end of the reducer A22 through a coupling, when the reducer A22 is turned on, the power of the reducer A22 can be transmitted to the lead screw through the output shaft, driving the lead screw to rotate, and the bottom of the pneumatic slip ring 25 is close to the lead screw. A ball nut is installed at the position of the lever, and the ball nut fits with the lead screw. A limit track is also arranged on the slide 21. The bottom of the pneumatic slip ring 25 is fixedly connected to a limit slider near the limit track, and the limit slider fits with the limit track. When in use, turn on the reducer A22, and the power of the reducer A22 can be transmitted to the lead screw through the output shaft, driving the lead screw to rotate. The rotating lead screw cooperates with the ball nut to enable the pneumatic slip ring 25 to move along the axial direction of the lead screw on the slide 21. The output shaft of the reducer B23 is directly connected to the centering mechanism 27 through a coupling. When in use, turn on the reducer B23, and the output shaft of the reducer B23 will directly drive the centering mechanism 27 to rotate through the coupling, and the rotating centering mechanism 27 can drive the turning tool 26 to rotate as well.

[0040] like Figure 4 and Figure 5 As shown, the centering mechanism 27 includes a fixed plate 271, one side of the fixed plate 271 is fixed to the end face of the pneumatic slip ring 25 by bolts, and a sleeve 272 is connected to the center position of the other side of the fixed plate 271, and the end of the sleeve 272 away from the fixed plate 271 is connected to the core shaft 273, and the end of the core shaft 273 away from the sleeve 272 is connected to the shaft sleeve 274, and the end of the sleeve 274 away from the core shaft 273 is connected to the rubber inner support 275. It should be noted that a bearing 2711 is installed between the fixed plate 271 and the sleeve 272, so that the rotation between the fixed plate 271 and the sleeve 272 will not affect each other.

[0041] Specifically, when the end of the graphite tube workpiece 28 is at the position of the centering mechanism 27, the reducer A22 is turned on, and the power of the reducer A22 can be transmitted to the screw through the output shaft to drive the screw to rotate. The rotating screw cooperates with the ball nut to enable the pneumatic slip ring 25 to move along the axial direction of the screw on the slide 21 to ensure that the rubber inner support 275 extends into the interior of the graphite tube workpiece 28. It should be noted that the rubber inner support 275 is divided into four fan-shaped rubber blocks of the same size, and the fan-shaped rubber blocks can slide on the end surface of the sleeve 274. A pull rod 276 is inserted into the interior of the sleeve 274. The end of the pull rod 276 close to the rubber inner support 275 is enlarged, and the other end of the pull rod 276 is connected to the cylinder. After starting, the cylinder can drive the pull rod 276 to move the pull rod 276 inside the sleeve 274, such as Figure 5 As shown, when the pull rod 276 moves inside the sleeve 274, one end of the pull rod 276 will squeeze the fan-shaped rubber block, causing the fan-shaped rubber block to move to a position away from the center of the end face of the sleeve 274, so that it can be squeezed into the interior of the graphite tube workpiece 28, thereby realizing automatic centering of the graphite tube workpiece 28, ensuring that the graphite tube workpiece 28 is more stable and does not vibrate during the process of machining the graphite tube workpiece 28 by the turning tool 26, thereby improving the effect of the turning tool 26 in turning the graphite tube workpiece 28.

[0042] Example 2

[0043] like Figure 1 and Figure 6 As shown, the workpiece fixing unit 5 includes a fixing platform 51, which is fixed to the top surface of the equipment bed 1 by bolts, and the bottom surface of the fixing platform 51 is bolted with an adjusting cylinder 52, and the adjusting cylinder 52 is connected to a clamping platform 54 through a long rod. It should be noted that the fixing platform 51 is fixed to the top surface of the equipment bed 1 by bolts, and the bottom surface of the clamping platform 54 is fixedly connected with a plurality of telescopic rods 53, and a telescopic hole matching the telescopic rod 53 is provided on the top surface of the fixing platform 51 near the telescopic rod 53. When in use, the adjusting cylinder 52 is turned on, and the adjusting cylinder 52 can drive the clamping platform 54 through the long rod to adjust the height of the clamping platform 54, and the telescopic rod 53 arranged on the bottom surface of the clamping platform 54 cooperates with the telescopic hole to make the clamping platform 54 more stable during the lifting process.

[0044] like Figure 1 , Figure 6 and Figure 7As shown, the clamping platform 54 includes a lifting platform 541, a fixing seat 542 is bolted to the top surface of one side of the lifting platform 541, a clamping cylinder 543 is bolted to the top surface of the fixing seat 542, a mounting arm 544 is connected to the output end of the clamping cylinder 543, a first clamping block 545 is bolted to one end of the mounting arm 544 away from the clamping cylinder 543, a mounting plate 546 is bolted to the center position of the top surface of the lifting platform 541, and a second clamping block 547 is bolted to the top surface of the mounting plate 546. It should be noted that The first clamping block 545 and the second clamping block 547 are both made of rubber. The first clamping block 545 and the second clamping block 547 have clamping grooves on their opposite surfaces. When the graphite tube workpiece 28 is placed in the clamping groove on the second clamping block 547, the clamping cylinder 543 can be opened. The clamping cylinder 543 drives the mounting arm 544 through the long rod, and the mounting arm 544 drives the first clamping block 545, so that the first clamping block 545 automatically moves downward and cooperates with the second clamping block 547 to clamp the graphite tube workpiece 28.

[0045] It should be noted that an image acquisition module can be installed on the pneumatic slip ring 25, and the image acquisition module is used to collect the end surface image data of the graphite tube workpiece 28. The image acquisition module can be a high-definition camera, and then a machine learning model for identifying the center height of the graphite tube workpiece 28 is trained using a convolutional neural network based on the end surface image of the graphite tube workpiece 28, specifically including the following steps:

[0046] First, a technician in this field collects a historical training data set through an image acquisition module on the pneumatic slip ring 25. The historical training data set includes N groups of historical training data, where N is a positive integer. The size of N is adaptively selected by the technician in this field according to the training of the machine learning model. Each group of historical training data includes feature data and label data, wherein the feature data is graphite tube end face image data, and the graphite tube end face image data includes the size information of the graphite tube workpiece 28 in the image, the position information of the center of the graphite tube end face in the image, and the height value of the clamping platform 54. The label data is the height of the center of the graphite tube workpiece 28. The measurement method can be to determine the height of the center of the graphite tube workpiece 28 with the top surface of the equipment bed 1 as the height origin;

[0047] Then, a machine learning model for identifying the center height of the graphite tube workpiece 28 is trained based on the historical training data set. The training method of the machine learning model is:

[0048] The feature data in the historical training data is used as the input of the machine learning model, and the height of the center of the graphite tube workpiece 28 predicted by the machine learning model based on the feature data is used as the output. The height of the center of the graphite tube workpiece 28 in the label data corresponding to the feature data is used as the prediction target, and the training target is to minimize the sum of all prediction accuracies. The calculation formula for prediction accuracy is ui=(ai-ci)2 , where ui is the prediction accuracy, ai is the predicted height of the center of the graphite tube workpiece 28 corresponding to the feature data in the i-th group of historical training data, ci is the height of the center of the graphite tube workpiece 28 in the label data corresponding to the feature data in the i-th group of historical training data, and the training is stopped when the sum of the prediction accuracies reaches convergence. The convergence standard is set by those skilled in the art according to the specific model training situation.

[0049] Specifically, during operation, the clamping cylinder 543 is turned on, and the clamping cylinder 543 drives the mounting arm 544 through the long rod, and the mounting arm 544 drives the first clamping block 545, so that the first clamping block 545 automatically moves downward and cooperates with the second clamping block 547 to clamp the graphite tube workpiece 28, and then the image acquisition module is controlled to acquire the graphite tube end face image data in real time. Based on the graphite tube end face image data, the height of the center of the graphite tube workpiece 28 is identified using a machine learning model, and then the height value of the clamping platform 54 is controlled according to the height of the center of the graphite tube workpiece 28, so that the center of the graphite tube workpiece 28 coincides with the center of the centering mechanism 27, without manual adjustment, thereby realizing automatic control of the height of the graphite tube workpiece 28, and greatly improving the processing efficiency of the graphite tube workpiece 28.

[0050] Example 3

[0051] like Figure 7 and Figure 8 As shown, the conveying unit 6 includes a conveying cabinet 61, and a placement area 62 is fixedly connected to one side of the top surface of the conveying cabinet 61, a lifting plate 63 and a conveying area 64 are installed in the middle position of the conveying cabinet 61, and a lifting frame 65 is arranged on the other side of the top surface of the conveying cabinet 61, and a driving cylinder 66 and a sliding rail 67 are installed at both ends of the lifting frame 65, and the conveying end of the driving cylinder 66 is connected to a sliding frame 68, and the top surface of the sliding frame 68 is fixedly connected to a placement frame 69, and the top surfaces of the placement area 62, the lifting plate 63 and the conveying area 64 are all inclined. It should be noted that the placement area 62 is composed of a plurality of inclined vertical plates, and the graphite tube workpiece 28 can be horizontally laid on the top surface of the vertical plate. Since the top surface of the vertical plate is inclined, after the innermost graphite tube workpiece 28 is taken out, the subsequent graphite tube workpiece 28 can be automatically rolled and filled.

[0052] It should be noted that a vertical cylinder is installed on the bottom surface of the lifting plate 63, and the output end of the vertical cylinder is directly connected to the bottom surface of the lifting plate 63, and the vertical cylinder is fixed to the inside of the conveying cabinet 61 by bolts. When the vertical cylinder is opened, the output end of the vertical cylinder will directly drive the lifting plate 63, and the lifting plate 63 will push the graphite tube workpiece 28 on the top. Since the top surface of the lifting plate 63 is inclined, the graphite tube workpiece 28 will not slide off the top surface of the lifting plate 63 during the movement of the lifting plate 63. When the top surface of the lifting plate 63 rises to be flush with the top surface of the conveying area 64, the graphite tube workpiece 28 will automatically roll from the top surface of the lifting plate 63 to the top surface of the conveying area 64. Since the top surface of the conveying area 64 is also inclined, the graphite tube workpiece 28 that rolls to the top surface of the conveying area 64 will continue to roll and eventually stop on the top surface of the placement rack 69.

[0053] A placement groove is provided on the top surface of the placement rack 69. When the graphite tube workpiece 28 is embedded in the placement groove, it will stay on the top surface of the placement rack 69. At this time, the driving cylinder 66 can be opened. The output end of the driving cylinder 66 is directly connected to the sliding rack 68, so the output end of the driving cylinder 66 can directly drive the sliding rack 68. The bottom of the placement rack 69 is fixedly connected to the top surface of the sliding rack 68, so the moving sliding rack 68 will drive the placement rack 69 to move synchronously.

[0054] When the placement rack 69 moves the graphite tube workpiece 28 between the first clamping block 545 and the second clamping block 547, the adjusting cylinder 52 can be opened. The adjusting cylinder 52 can drive the clamping platform 54 through the long rod to increase the height of the clamping platform 54, so that the graphite tube workpiece 28 will automatically detach from the placement groove on the placement rack 69, and then the placement rack 69 can automatically retract, thereby realizing automatic loading of the graphite tube workpiece 28.

[0055] like Figure 1 and Figure 2As shown, after both ends of the graphite tube workpiece 28 are processed, the placement rack 69 can continue to cooperate with the first clamping block 545 and the second clamping block 547 to take out the graphite tube workpiece 28 clamped between the first clamping block 545 and the second clamping block 547. The specific method is opposite to that of placement. First, the placement rack 69 moves to the bottom of the graphite tube workpiece 28, and then the first clamping block 545 and the second clamping block 547 release the clamping of the graphite tube workpiece 28. At the same time, the regulating cylinder 52 can be opened. The adjusting cylinder 52 can drive the clamping platform 54 through the long rod to lower the height of the clamping platform 54 so that the graphite tube workpiece 28 falls on the placement rack 69. The placement rack 69 first moves a distance toward the side of the conveying cabinet 61 to make the graphite tube workpiece 28 separate from the first clamping block 545 and the second clamping block 547. Then the first clamping block 545 and the second clamping block 547 continue to descend, and the placement rack 69 moves away from the conveying cabinet 61 to make the graphite tube workpiece 28 above the finished product storage rack 3.

[0056] A vertical cylinder is also installed at the bottom of the lifting frame 65, and the vertical cylinder is used to control the height of the lifting frame 65, that is, to control the height of the placement rack 69. When the graphite tube workpiece 28 is above the finished product storage rack 3, the placement rack 69 can be controlled by the lifting frame 65 to lower the placement rack 69, so that the graphite tube workpiece 28 will fall on the finished product storage rack 3. One end of the finished product storage rack 3 is tilted to automatically store the processed graphite tube workpiece 28.

[0057] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. Turning equipment suitable for machining both ends of long graphite tubes, characterized in that: include: An equipment bed (1) has a first turning unit (2) and a second turning unit (4) respectively disposed at two ends of its top; Finished product storage racks (3), which are in two groups, and the two groups of finished product storage racks (3) are respectively arranged on one side of the equipment bed (1) near the first turning unit (2) and the second turning unit (4); Workpiece fixing units (5), wherein a plurality of groups of workpiece fixing units (5) are evenly arranged on the top of the equipment bed (1); Conveying units (6), the number of which is two groups, the two groups of conveying units (6) are arranged on one side of the equipment bed (1), and the conveying units (6) store graphite tube workpieces (28); The first turning unit (2) and the second turning unit (4) automatically identify the center height of the graphite tube workpiece (28), and adjust the height of the workpiece fixing unit (5) based on the center height of the long graphite tube; The first turning unit (2) and the second turning unit (4) both comprise a slide (21), one end of the slide (21) being bolted to a reducer A (22), a reducer B (23) being mounted on the top of the reducer A (22), a reducer C (24) being mounted on the top of the reducer B (23), a pneumatic slip ring (25) being mounted on the top of the slide (21), a centering mechanism (27) being mounted on the end surface of the pneumatic slip ring (25), and a turning tool (26) being disposed on one side of the centering mechanism (27); The centering mechanism (27) comprises a fixing plate (271), one side of the fixing plate (271) is fixed to the end surface of the pneumatic slip ring (25) by means of bolts, a sliding sleeve (272) is connected to the center position of the other side of the fixing plate (271), one end of the sliding sleeve (272) away from the fixing plate (271) is connected to a core shaft (273), one end of the core shaft (273) away from the sliding sleeve (272) is connected to a shaft sleeve (274), and one end of the shaft sleeve (274) away from the core shaft (273) is connected to a rubber inner support (275); An image acquisition module is installed on the pneumatic slip ring (25), the image acquisition module is used to acquire end surface image data of the graphite tube workpiece (28), the image acquisition module acquires a historical training data set, the historical training data set includes N groups of historical training data, N is a positive integer, and a machine learning model for identifying the center height of the graphite tube workpiece (28) is trained based on the historical training data set; The image acquisition module acquires the graphite tube end surface image data in real time, and uses a machine learning model to identify the height of the center of the graphite tube workpiece (28) based on the graphite tube end surface image data.

2. The turning equipment suitable for machining both ends of a long graphite tube according to claim 1, characterized in that: The equipment bed (1) comprises a base body (11); a mounting seat (12) is bolted to the top surface of one end of the base body (11) close to the first turning unit (2); the mounting seat (12) is bolted to the first turning unit (2); a movable slide rail (13) is installed at the other end of the top surface of the base body (11); a track platform (14) is arranged on the top of the movable slide rail (13); and the track platform (14) is bolted to the second turning unit (4).

3. The turning equipment suitable for machining both ends of a long graphite tube according to claim 1, characterized in that: The workpiece fixing unit (5) comprises a fixing platform (51), the fixing platform (51) being fixed to the top surface of the equipment bed (1) by means of bolts, the bottom surface of the fixing platform (51) being bolted to an adjusting cylinder (52), and the adjusting cylinder (52) being connected to a clamping platform (54) by means of a long rod.

4. The turning equipment suitable for machining both ends of a long graphite tube according to claim 3, characterized in that: The clamping platform (54) comprises a lifting platform (541), a top surface of one side of the lifting platform (541) is bolted to a fixing seat (542), a top surface of the fixing seat (542) is bolted to a clamping cylinder (543), an output end of the clamping cylinder (543) is connected to a mounting arm (544), an end of the mounting arm (544) away from the clamping cylinder (543) is bolted to a first clamping block (545), a mounting plate (546) is bolted to a center position of the top surface of the lifting platform (541), and a top surface of the mounting plate (546) is bolted to a second clamping block (547).

5. The turning equipment suitable for machining both ends of a long graphite tube according to claim 1, characterized in that: The conveying unit (6) comprises a conveying cabinet (61), one side of the top surface of the conveying cabinet (61) is fixedly connected to a placement area (62), a lifting plate (63) and a conveying area (64) are installed in the middle of the conveying cabinet (61), a lifting frame (65) is arranged on the other side of the top surface of the conveying cabinet (61), a driving cylinder (66) and a sliding track (67) are installed at both ends of the lifting frame (65), the conveying end of the driving cylinder (66) is connected to a sliding frame (68), and the top surface of the sliding frame (68) is fixedly connected to a placement frame (69).

6. The turning equipment suitable for machining both ends of a long graphite tube according to claim 5, characterized in that: The top surfaces of the placement area (62), the lifting plate (63) and the conveying area (64) are all inclined.

7. The turning equipment suitable for machining both ends of a long graphite tube according to claim 1, characterized in that: The training method of the machine learning model is: The feature data in the historical training data is used as the input of the machine learning model, and the height of the center of the graphite tube workpiece (28) predicted by the machine learning model based on the feature data is used as the output. The height of the center of the graphite tube workpiece (28) in the label data corresponding to the feature data is used as the prediction target, and minimizing the sum of all prediction accuracies is used as the training target. The calculation formula of the prediction accuracy is ui=(ai-ci) 2 , where ui is the prediction accuracy, ai is the predicted height of the center of the graphite tube workpiece (28) corresponding to the feature data in the i-th group of historical training data, ci is the height of the center of the graphite tube workpiece (28) in the label data corresponding to the feature data in the i-th group of historical training data, and the training is stopped when the sum of the prediction accuracies reaches convergence.

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