Full-automatic round rod feeding and discharging production line

Abstract

This invention discloses an automated round rod loading and unloading production line, relating to the field of automated machining equipment technology. It includes a first unit and a second unit. The first unit includes a loading assembly and an unloading assembly; the loading assembly includes a loading platform, a feeding platform, and a straightening platform. The second unit includes a loading assembly and an unloading assembly; the loading assembly includes a feeding platform and a straightening platform. During automated loading and unloading, the round rod is lifted by the loading platform of the first unit and enters the feeding platform of the first unit. The feeding platform pushes the round rod into a first CNC lathe for processing. Then, the unloading unit of the first unit removes the processed round rod from the CNC lathe, passes through a transfer platform of the first unit, and enters the feeding platform of the second unit. The feeding platform of the second unit then pushes the round rod into a second CNC lathe, and the unloading unit of the second unit removes the finished round rod from the second CNC lathe and places it on a finished product transfer platform. This device solves the problems of time-consuming and labor-intensive manual handling of round rods, which easily leads to fatigue.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical processing automation equipment, and particularly relates to a full-automatic feeding and discharging production line for round rods. BACKGROUND

[0002] As a basic material, the round rod has a wide and key application in the fields of construction, power, transportation and the like due to its high strength, good corrosion resistance, high construction efficiency and the like, and is particularly widely applied in the field of mechanical manufacturing, such as high-precision components such as automobile transmission shafts and hydraulic cylinder piston rods.

[0003] After the round rod is initially formed, a lathe or the like is used to process the round rod again, and the two ends of the round rod are turned flat or drilled according to requirements. Since the volume and weight of the round rod are large, the operator needs to manually insert the round rod into the fixed position of the lathe for processing. The existing feeding and discharging of the round rod is mostly single-station, without double-units transfer, and repeated handling will make the operator easily tired, and there is a production safety hazard. Moreover, the manual positioning precision of the round rod into the lathe is low, and continuous processing is not possible. SUMMARY

[0004] The present application aims at solving the problems of the existing feeding and discharging of the round rod, which cannot be continuously processed and the manual positioning precision is low, and proposes a full-automatic feeding and discharging production line for round rods.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a first unit and a second unit, the first unit comprising a feeding mechanism, a first numerical control lathe and a discharging mechanism; the second unit comprising a feeding mechanism, a second numerical control lathe and a discharging mechanism.

[0006] The unit loading mechanism includes a unit loading rack, a unit feeding rack, and a unit centering rack; below the unit loading rack, there is a unit lifting cylinder, and above the unit lifting cylinder, there is a unit lifting platform for lifting the round rod to the unit feeding rack; above the unit feeding rack, there is a servo motor, a gear guide rail, and feeding roller A, and below it, there is an electrical cabinet with a PLC and a control circuit installed inside. The PLC is electrically connected to structures such as the lifting cylinder, servo motor, and pneumatic fixture for automatic and linkage control; in front of the unit feeding rack, there is a unit centering rack. Above the unit centering rack, there is a set of linear guide rails, and on the linear guide rails, there is a mounting plate with a pneumatic center fixture for centering and positioning the round rod; below the pneumatic center fixture, there are two feeding roller up and down cylinders; in front of the unit centering rack, there is a first CNC lathe; in front of the first CNC lathe, there is a unit unloading rack. Above the unit unloading rack, there is a unloading receiving cylinder, and on the left side of the unloading receiving cylinder, there is a unloading pushing cylinder; on the right side of the unit unloading rack, there is a unit transfer rack. In the middle of the unit transfer rack, there is a transfer part blocking cylinder; below the right side, there is a two-unit lifting cylinder, and above the two-unit lifting cylinder, there is a two-unit lifting platform; on the right side of the unit transfer rack is the two-unit feeding rack of the two-unit loading mechanism. Above the two-unit feeding rack, there is a servo motor, a gear guide rail, and feeding roller B, and below it, there is an electrical cabinet with a PLC and a control circuit installed inside. The PLC is electrically connected to structures such as the lifting cylinder, servo motor, and pneumatic fixture for automatic and linkage control; behind the two-unit feeding rack, there is a two-unit centering rack. Above the two-unit centering rack, there is a set of linear guide rails, and on the linear guide rails, there is a mounting plate with a pneumatic center fixture for centering and positioning the round rod; below the pneumatic center fixture, there are two feeding roller up and down cylinders; behind the two-unit centering rack, there is a second CNC lathe; behind the second CNC lathe, there is a two-unit unloading rack. Above the two-unit unloading rack, there is a unloading receiving cylinder, and on the left side of the unloading receiving cylinder, there is a unloading pushing cylinder; on the left side of the two-unit unloading rack, there is a floor support rack with a display screen and operation buttons; on the right side of the two-unit unloading rack, there is a finished product transfer rack with a receiving belt above it and a belt winding motor below it. The production line also includes electrical components such as magnetic switches, photoelectric switches, and solenoid valve groups, all of which are electrically connected to the PLC in the electrical cabinet to achieve automatic detection and action control of the production line.

[0007] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are:

[0008] 1. By using a transfer platform and an automatic loading and unloading device to connect the two originally independent units in series, the operator only needs to use the overhead crane to load and unload materials. Compared with manual loading and unloading, the production efficiency is increased by more than 50%, and only one person is needed to operate a single production line, replacing the original manual process of 2-3 people.

[0009] 2. The feeding is achieved by using a servo motor and gear guide rail, with a positioning accuracy of ±0.1mm. No manual alignment is required, which can save the manual repetitive positioning steps and improve efficiency.

[0010] 3. It adopts a dual-unit independent control design, which can be compatible with the mixed processing of round rods of different lengths from 1500mm to 2500mm. Attached Figure Description

[0011] In this invention, "front" refers to the feed direction of the round rod in the first unit, "rear" refers to the feed direction of the round rod in the second unit, and "left / right" is determined based on the feed direction of the round rod.

[0012] Figure 1 This is a top view of the overall structure of the fully automated round rod loading and unloading production line of the present invention. The arrows indicate the overall processing flow direction of the round rod.

[0013] Figure 2 This is a side view of a single-unit feeding mechanism.

[0014] Figure 3 This is a schematic diagram of the main structure of a single uprighting frame.

[0015] Figure 4 This is a schematic diagram of the main structure of a unit unloading rack;

[0016] Figure 5 This is a schematic diagram of the main structure of a transfer platform in a unit.

[0017] Figure 6 This is a side view of the two-unit loading rack.

[0018] Figure 7 This is a schematic diagram of the main structure of the two-unit uprighting frame;

[0019] Figure 8 This is a schematic diagram of the main structure of the two-unit feeding mechanism.

[0020] Legend:

[0021] 1. Unit 1 loading rack; 2. Unit 1 lifting cylinder; 3. Unit 1 lifting platform; 4. Unit 1 feeding rack; 5. Servo motor; 6. Gear guide rail; 7. Feeding roller A; 8. Electrical cabinet; 9. Unit 1 straightening rack; 10. Linear guide rail; 11. Mounting plate; 12. Pneumatic center clamp; 13. Feeding roller lifting cylinder; 14. First CNC lathe; 15. Unit 1 unloading rack; 16. Unloading and receiving cylinder; 17. Unloading and pushing cylinder; 18. Unit 1 transfer rack; 19. Transfer component blocking cylinder; 20. Unit 2 lifting cylinder; 21. 1. Two-unit lifting platform; 22. Two-unit feeding frame platform; 23. Servo motor; 24. Gear guide rail; 25. Feeding roller B; 26. Electrical cabinet; 27. Two-unit straightening frame platform; 28. Linear guide rail; 29. ​​Mounting plate; 30. Pneumatic center clamp; 31. Feeding roller upper and lower cylinder; 32. Second CNC lathe; 33. Two-unit unloading frame platform; 34. Unloading and receiving cylinder; 35. Unloading and pushing cylinder; 36. Floor support frame platform; 37. Display screen and operation buttons; 38. Finished product transfer frame platform; 39. Receiving belt; 40. Belt winding motor. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] like Figure 1 — Figure 8As shown, the present invention provides a structural schematic diagram of an example of a fully automatic round rod loading and unloading production line, including: a unit loading rack 1, a unit lifting cylinder 2 below the unit loading rack 1, and a unit lifting platform 3 above the unit lifting cylinder 2; a unit feeding rack 4 is located on the right side of the unit loading rack 1, and a servo motor 5, a gear guide rail 6, and a feeding roller A7 are located above the unit feeding rack 4, and an electrical cabinet 8 is located below it, which houses a PLC and control circuit; a unit straightening rack 9 is located in front of the unit feeding rack 4, and a set of linear guides is located above the unit straightening rack 9. The linear guide rail 10 has a mounting plate 11, and a pneumatic center clamp 12 is mounted on the mounting plate 11. Below the pneumatic center clamp 12 are two feeding roller upper and lower cylinders 13. A first CNC lathe 14 is located in front of the unit straightening platform 9, and a unit unloading platform 15 is located in front of the first CNC lathe 14. A unloading receiving cylinder 16 is located above the unit unloading platform 15, and a unloading pushing cylinder 17 is located to the left of the unloading receiving cylinder 16. A unit transfer platform 18 is located to the right of the unit unloading platform 15. A transfer component blocking cylinder 19 is located in the middle of the unit transfer platform 18, and two single-stage cylinders are located below the right side. The unit has a lifting cylinder 20, and a second-unit lifting platform 21 is located above the first-unit lifting cylinder 20. A second-unit feeding platform 22 is located to the right of the first-unit transfer platform 18. A servo motor 23, a gear guide rail 24, and a feeding roller B25 are located above the second-unit feeding platform 22. An electrical cabinet 26 is located below the second-unit feeding platform 22, housing a PLC and control circuit. A second-unit straightening platform 27 is located behind the second-unit feeding platform 22. A set of linear guide rails 28 is located above the second-unit straightening platform 27. A mounting plate 29 is located on the linear guide rails 28, and a pneumatic center clamp 30 is located on the mounting plate 29. The pneumatic center clamp 30... Below unit 0, there are two feeding roller upper and lower cylinders 31; behind the second unit uprighting platform 27, there is a second CNC lathe 32, behind the second CNC lathe 32, there is a second unit unloading platform 33, above the second unit unloading platform 33, there is an unloading receiving cylinder 34, and to the left of the unloading receiving cylinder 34, there is an unloading pushing cylinder 35; to the left of the second unit unloading platform 33, there is a floor support platform 36, on which there is a display screen and operation buttons 37; to the right of the second unit unloading platform 33, there is a finished product transfer platform 38, above the finished product transfer platform 38, there is a receiving belt 39, and below it, there is a belt winding motor 40.

[0024] The workflow of Unit 1 is as follows:

[0025] like Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the round rod to be processed is hoisted onto the unit loading platform 1 using an overhead crane. Various parameters are adjusted using the display screen 37. After completion, the system switches to automatic mode. Pressing the start button allows the round rod to roll freely onto the unit lifting platform 3. When the photoelectric switch at the unit lifting platform 3 detects that the round rod has reached its position, it sends a signal to the PLC indicating that the round rod has reached its position. Upon receiving the signal, the PLC drives the unit lifting cylinder 2 to move upwards, and the unit lifting platform 3 lifts the round rod. When the round rod continues to roll onto the unit feeding platform 4, the unit lifting cylinder 2 moves downwards, and the unit lifting platform 3 returns to its original position, responding to the round rod being positioned again.

[0026] When the round rod to be processed rolls to the first unit feeding frame 4, the PLC drives the pneumatic center clamp 12 on the first unit straightening frame 9 to open, and the two feeding roller upper and lower cylinders 13 move upward, bringing the feeding rollers mounted on the upper and lower cylinders 13 to the same height as the feeding roller A7 on the first unit feeding frame 4. At the same time, the PLC sends a signal to the first CNC lathe 14, and the first CNC lathe 14 automatically controls the chuck to perform the opening action. After all the above conditions are met, the PLC drives the pusher servo motor 5 at the origin to start moving. The output end of the servo motor 5 is equipped with a transmission gear, which meshes with the gear guide rail 6. Through gear transmission, the round rod is moved along the feed direction, pushing the round rod to be processed into the designated position in the first CNC lathe 14 along the feeding roller A7. When the round rod to be processed... After the round rod reaches the designated position, the PLC drives the pusher servo motor 5 to retract along the gear guide rail 6 back to the starting position, and responds to the round rod to be processed to take position again after returning to the starting position; at the same time as the pusher servo motor 5 retracts, the chuck of the first CNC lathe 14 clamps the round rod to be processed. After the chuck clamping is completed, the PLC drives the pneumatic center fixture 12 on the unit straightening table 9 to perform a clamping action, clamping the part of the round rod to be processed that is exposed on the first CNC lathe 14. After the pneumatic center fixture 12 is clamped, the feeding roller up and down cylinder 13 on the unit feeding table 4 moves downward and away from the round rod to be processed; after the PLC detects that the above actions are completed, it sends a linkage command to the first CNC lathe 14 to remotely control the first CNC lathe 14 to start and begin to execute the processing program to process the round rod.

[0027] After the first CNC lathe 14 finishes processing, it sends a notification to the PLC. The PLC then drives the unloading and receiving cylinder 16 on the unit unloading platform 15 to extend into the lathe, extending the receiving groove into the receiving position of the lathe. At the same time, the two feeding roller cylinders 13 on the unit straightening platform 9 move upward to contact the processed round rod. After the cylinders 13 move, the pneumatic center clamp 12 on the unit straightening platform 9 releases the exposed part of the processed round rod on the lathe. After the pneumatic center clamp 12 releases, the chuck of the first CNC lathe 14 releases the processed round rod. After the chuck releases, the pusher servo motor 5, which has returned to standby, moves again to push the second round rod to be processed into the first CNC lathe 14. At the same time, it pushes the processed round rod out of the first CNC lathe 14 and into the receiving groove until the pusher servo motor 5 stops moving forward when it delivers the second round rod to be processed into the designated position.

[0028] When the pusher servo motor 5 starts to return to the starting position, the unloading and receiving cylinder 16 starts to exit the first CNC lathe 14, driving the receiving groove back to the first unit unloading frame 15; after the unloading and receiving cylinder 16 completes its action, the unloading pusher cylinder 17 performs its action, pushing the machined round rod on the receiving groove into the first unit transfer frame 18, so that the machined round rod of the first unit rolls along the ramp of the frame to the blocking cylinder 19 of the transfer frame. After the sensor detects that there is a machined round rod, it notifies the PLC. The PLC drives the blocking cylinder 19 to move downward, so that the machined round rod continues to roll along the ramp of the transfer frame 18 to the second unit lifting platform 21;

[0029] The workflow for Unit Two is as follows:

[0030] like Figure 6 , Figure 7 , Figure 8 As shown, when the photoelectric switch at the second unit lifting platform 21 detects that the round rod to be processed has reached the position, it sends a signal to the PLC indicating that the round rod to be processed has reached the position. After receiving the signal, the PLC drives the second unit lifting cylinder 20 to move upward, driving the second unit lifting platform 21 to lift the round rod to be processed. When the round rod to be processed continues to roll onto the second unit feeding rack 22, the second unit lifting cylinder 20 moves downward, driving the second unit lifting platform 21 back to its original position and responding to the round rod to be processed being positioned again.

[0031] When the round rod to be processed rolls to the second unit feeding frame 22, the PLC drives the pneumatic center clamp 30 on the second unit straightening frame 27 to open, and at the same time drives the two feeding roller upper and lower cylinders 31 to move upward, so that the feeding rollers installed on the upper and lower cylinders 31 are at the same height as the feeding rollers B25 on the second unit feeding frame 22. At the same time, the PLC sends a signal to the second CNC lathe 32, and the second CNC lathe 32 automatically controls the chuck to perform the opening action. After all the above conditions are met, the PLC drives the pusher servo motor 23 at the origin of the action to start to move. The output end of the servo motor 23 is equipped with a transmission gear, which meshes with the gear guide rail 24. Through gear transmission, the round rod is driven to move along the feed direction, and the round rod to be processed is pushed into the designated position in the second CNC lathe 32 along the feeding rollers B25.

[0032] When the round rod to be processed reaches the designated position, the pusher servo motor 23 begins to retract along the gear guide rail 24 to the starting position, and responds to the round rod to be processed being positioned again after returning to the starting position; at the same time as the pusher servo motor 23 retracts, the PLC sends a signal to the second CNC lathe 32 to clamp the round rod to be processed in the chuck. After the chuck clamping is completed, the pneumatic center fixture 30 on the second unit straightening table 27 performs a clamping action, clamping the part of the round rod to be processed that is exposed on the second CNC lathe 32. After the pneumatic center fixture 30 is clamped, the feeding roller up-and-down cylinder 31 on the second unit feeding table 22 moves downward, away from the round rod to be processed; when the PLC receives the corresponding signal and determines that the above actions are completed, it sends a command to the second CNC lathe 32 to remotely control the second CNC lathe 32 to start and begin executing the machining program to process the round rod.

[0033] After the second CNC lathe 32 finishes processing, the PLC drives the unloading and receiving cylinder 34 on the second unit unloading frame 33 to extend into the lathe, extending the receiving groove into the lathe receiving position. At the same time, the two feeding roller cylinders 31 on the second unit straightening frame 27 move upward to contact the processed round rod. After the cylinders 31 move, the pneumatic center clamp 30 on the second unit straightening frame 27 releases the exposed part of the processed round rod on the lathe. After the pneumatic center clamp 30 releases, the chuck of the second CNC lathe 32 releases the processed round rod. After the chuck releases, the pusher servo motor 23, which has entered the standby state again, moves again to push the second round rod to be processed into the second CNC lathe 32. At the same time, it pushes the processed round rod out of the second CNC lathe 32 and into the receiving groove until the pusher servo motor 23 sends the second round rod to be processed into the designated position and stops moving forward.

[0034] When the pusher servo motor 23 starts to return to the starting position, the PLC drives the unloading and receiving cylinder 34 to exit the second CNC lathe 32, and the receiving groove returns to the second unit unloading frame 33. After the unloading and receiving cylinder 34 completes its action, the unloading pusher cylinder 35 performs its action to push the processed round rods on the receiving groove onto the receiving belt 39 of the finished product transfer frame 38. When a certain number of round rods are reached, the belt retraction motor 40 automatically loosens the belt to free up more space to store the round rods, waiting for the operator to transport the processed round rods to other areas.

[0035] The overall workflow is as follows:

[0036] After the round rod to be processed is placed on the first unit loading rack 1 and slides freely to the lifting position, the first unit lifting cylinder 2 pushes the round rod on the lifting position to the first unit feeding rack 4.

[0037] After the round rod enters the first unit feeding platform 4, under certain conditions, the servo motor 5 starts to move, feeding the round rod on the first unit feeding platform 4 into the designated position in the first CNC lathe 14, then retracting to the starting position and responding to the feeding platform 4 to lift the round rod again. During the retraction of the servo motor 5, the pneumatic center clamp 12 on the first unit straightening platform 9 starts to move to straighten the round rod.

[0038] After the straightening action is completed, the first CNC lathe 14 starts the machining program and processes the round rod according to the steps. After processing, the pneumatic center fixture 12 opens and stops the straightening action. At the same time, the unloading and receiving cylinder 16 on the first unit unloading platform 15 is activated, extending the receiving groove into the first CNC lathe 14. When all parts are in place, the servo motor 5 on the first unit feeding platform 4 is activated again, sending the round rod to be processed into the first CNC lathe 14. At the same time, the round rod to be processed pushes out the already processed round rod that was originally in the processing area, and the already processed round rod is pushed onto the receiving groove. When the servo motor 5 is retracted again, the unloading and receiving cylinder 16 and the pneumatic center fixture 12 are activated simultaneously. The already processed round rod is withdrawn from the other side of the first CNC lathe 14 along with the receiving groove to the first unit unloading platform 15. The unloading and pushing cylinder 17 pushes the withdrawn already processed round rod, causing it to roll on the first unit unloading platform 15 to the first unit transfer platform 18, and continue to roll to the second unit lifting platform 21, where it is lifted and sent onto the second unit feeding platform 22.

[0039] After the round rod enters the second-unit feeding platform 22, under certain conditions, the servo motor 23 starts to move, feeding the round rod on the second-unit feeding platform 22 into the designated position in the second CNC lathe 32, and then retracts to the starting position and responds to the second-unit lifting platform 21 to lift the round rod again. During the retraction of the servo motor 23, the pneumatic center clamp 30 on the second-unit straightening platform 27 starts to move to straighten the round rod;

[0040] After the straightening action is completed, the second CNC lathe 32 starts the machining program and processes the round rod according to the steps. After machining is completed, the pneumatic center fixture 30 opens, stopping the straightening action. At the same time, the unloading and receiving cylinder 34 on the second unit unloading platform 33 is activated, extending the receiving groove into the second CNC lathe 32. When all parts are in place, the servo motor 23 on the second unit feeding platform 22 is activated again, feeding the round rod to be processed into the second CNC lathe 32. At the same time, the round rod to be processed pushes out the previously processed round rod in the machining area, and the processed round rod is pushed onto the receiving groove. When the servo motor 23 retracts again, the unloading and receiving cylinder 34 and the pneumatic center fixture 30 are activated simultaneously. The processed round rod follows the receiving groove from the other side of the second CNC lathe 32 to the second unit unloading platform 33, where the unloading and pushing cylinder 35 pushes the retracted processed round rod.

[0041] After the processed round rod has completed two processing steps, the unloading and pushing cylinder 35 pushes the processed round rod onto the receiving belt 39 of the finished product transfer platform 38, waiting for the operator to use a crane to lift it.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fully automated round rod loading and unloading production line, comprising a first unit and a second unit; the first unit includes a loading mechanism, a first CNC lathe, and an unloading mechanism; the second unit includes a loading mechanism, a second CNC lathe, and an unloading mechanism. Its characteristic is: The unit feeding mechanism includes a unit feeding frame (1), a unit feeding frame (4), and a unit straightening frame (9); a unit lifting cylinder (2) is provided below the unit feeding frame (1), and a unit lifting platform (3) is provided above the unit lifting cylinder (2) for lifting the round rod to the unit feeding frame (4); a servo motor (5), a gear guide rail (6), and a feeding roller A (7) are provided above the unit feeding frame (4), and an electrical cabinet (8) is provided below, which houses a PLC and control circuit. The PLC is electrically connected to the lifting cylinder, servo motor, pneumatic clamp, and other structures for automatic and linkage control; the unit feeding frame (4) is located in front of... A unit straightening platform (9) is provided, and a set of linear guide rails (10) is provided above the unit straightening platform (9). A mounting plate (11) is provided on the linear guide rails (10), and a pneumatic center clamp (12) is provided on the mounting plate (11) for straightening and positioning the round rod. Two feeding roller upper and lower cylinders (13) are provided below the pneumatic center clamp (12). A first CNC lathe (14) is provided in front of the unit straightening platform. A unit unloading platform (15) is provided in front of the first CNC lathe (14). A unloading receiving cylinder (16) is provided above the unit unloading platform (15), and a unloading pushing cylinder (17) is provided on the left side of the unloading receiving cylinder (16). The right side of the unit unloading platform (15) is... A unit transfer platform (18) is provided on the side, and a transfer component blocking cylinder (19) is provided in the middle of the unit transfer platform (18); a second unit lifting cylinder (20) is provided on the lower right side, and a second unit lifting platform (21) is provided above the second unit lifting cylinder (20); the right side of the unit transfer platform is the second unit feeding platform (22) of the second unit feeding mechanism, and a servo motor (23), a gear guide rail (24), and a feeding roller B (25) are provided on the upper part of the second unit feeding platform (22), and an electrical cabinet (26) is provided below, which is equipped with a PLC and control circuit. The PLC is electrically connected to the lifting cylinder, servo motor, pneumatic clamp and other structures for automatic and linkage control; the second unit A two-unit straightening frame (27) is provided behind the feeding frame (22). A set of linear guide rails (28) is provided above the two-unit straightening frame (27). A mounting plate (29) is provided on the linear guide rails (28). A pneumatic center clamp (30) is provided on the mounting plate (29) for straightening and positioning the round rod. Two feeding roller cylinders (31) are provided below the pneumatic center clamp (30). A second CNC lathe (32) is provided behind the two-unit straightening frame (27). A two-unit unloading frame (33) is provided behind the second CNC lathe (32). An unloading receiving cylinder (34) is provided above the two-unit unloading frame (33). An unloading pushing cylinder (35) is provided on the left side of the unloading receiving cylinder (34).The second-unit unloading rack (33) has a floor support rack (36) on its left side, and the support rack (36) has a display screen and operation buttons (37); the second-unit unloading rack (33) has a finished product transfer rack (38) on its right side, and a receiving belt (39) is located above the finished product transfer rack (38), and a belt winding motor (40) is located below it. The production line also includes electrical components such as magnetic switches, photoelectric switches, and solenoid valve groups, all of which are electrically connected to the PLC in the electrical cabinet to realize automatic detection and action control of the production line.

2. The fully automatic round rod loading and unloading production line according to claim 1, characterized in that, The feeding rollers A (7) on the feeding rack of the unit are stainless steel rollers, arranged at intervals along the feeding direction of the round rod, with a quantity of 8-12.

3. The fully automatic round rod loading and unloading production line according to claim 1, characterized in that, The clamping center of the pneumatic center fixture (12) on the unit straightening platform is coaxially set with the chuck clamping center of the first / second CNC lathe.

4. The fully automatic round rod loading and unloading production line according to claim 1, characterized in that, The transfer platform (18) in the first unit is a ramp structure with a ramp angle of 2° to 7°, which facilitates the rolling of the round rod under its own weight.

5. The fully automatic round rod loading and unloading production line according to claim 1, characterized in that, The feeding rollers B (25) on the two-unit feeding frame are stainless steel rollers, arranged at intervals along the feeding direction of the round rod, with a quantity of 8-12.

6. The fully automatic round rod loading and unloading production line according to claim 1, characterized in that, The clamping center of the pneumatic center fixture (30) on the second unit straightening platform is coaxially set with the clamping center of the chuck of the second CNC lathe.

7. The fully automatic round rod loading and unloading production line according to claim 1, characterized in that, The two-unit unloading platform (33) is a ramp + belt receiving structure with a ramp angle of 1°-5°, which makes it easier for the round rod to enter the receiving belt more quickly after being pushed.

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