Automatic feeding and discharging pipe cutting machine

Abstract

The utility model provides an automatic feeding and discharging pipe cutting machine. The automatic feeding and discharging pipe cutting machine comprises a lathe bed, a clamping chuck, a supporting chuck, a first X-direction driving device, a laser pipe cutting mechanism and a discharging mechanism, wherein the clamping chuck and the supporting chuck are distributed on the lathe bed left and right; the first X-direction driving device is used for controlling the clamping chuck to move left and right; the device further comprises a feeding mechanism. The clamping chuck and the supporting chuck are installed on the front side of the lathe bed. The feeding mechanism is arranged on the front side of the lathe bed and used for positioning the pipes and feeding the pipes to the position between the clamping chuck and the supporting chuck. The discharging mechanism comprises a mounting plate, a second Z-axis driving device, a connecting frame, a fixing frame, a supporting plate and a first air cylinder. The mounting plate is vertically slidably connected to the front side of the lathe bed through a first guide rail pair; the second Z-axis driving device is mounted between the mounting plate and the lathe bed; the two groups of connecting frames are distributed left and right; one end of the connecting frame is hinged with the mounting plate, and the other end is fixedly connected with the fixing frame; the number of the first air cylinders is two. The two first air cylinders are located below the two sets of connecting frames correspondingly. One end of the first cylinder is hinged to the mounting plate, and the other end is hinged to the middle of the connecting frame; the supporting plate is fixed above the fixing frame.

Description

Technical Field

[0001] This utility model relates to the field of pipe cutting machine technology, and in particular to an automatic loading and unloading pipe cutting machine. Background Technology

[0002] Current pipe cutting machines include both manual and automatic feeding systems. Manual feeding involves manually feeding the pipe to the positioning mechanism after each processing cycle, then lifting it via a jacking mechanism before clamping it. This is particularly inefficient for longer pipes, directly impacting production schedules. Automatic feeding machines place the pipe in the positioning mechanism and then lift it for clamping. While this method improves efficiency compared to manual feeding, the numerous steps result in insufficient overall efficiency. Furthermore, the unloading and collection of pipes requires the unloading mechanism to catch the cut pipes and guide them for collection. Previously, this involved various receiving, positioning, lifting, and rotating devices, all complex and involving numerous steps, leading to higher costs. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide an automatic loading and unloading pipe cutting machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An automatic tube cutting and unloading machine includes a bed, a clamping chuck and a supporting chuck mounted on the bed, a first X-axis drive device for controlling the left and right movement of the clamping chuck, and a laser tube cutting mechanism and a unloading mechanism mounted on the right side of the bed; it also includes an loading mechanism; the clamping chuck and the supporting chuck are respectively mounted on the front side of the bed; the loading mechanism is located on the front side of the bed and includes a drive assembly, several sets of left and right tube feeding devices, and several sets of left and right tube handling devices; the tube feeding devices are used to control the tubes to be transported from front to back; the drive assembly is connected to the tube feeding devices. This system is used to control the synchronous operation of all pipe feeding devices. The pipe handling device is located on the side of the rear of the pipe feeding device. The pipe handling device includes a Y-axis drive device, a first Z-axis drive device, a vertical plate, a support shaft, and an opening and closing clamping device. The power output end of the Y-axis drive device is connected to the first Z-axis drive device to control the forward and backward movement of the first Z-axis drive device. The power output end of the first Z-axis drive device is connected to the vertical plate to control the up and down movement of the vertical plate. The support shaft is mounted on the upper part of the vertical plate via a bearing seat. The opening and closing clamping device is mounted on one side of the vertical plate to clamp the pipe from the front and rear directions.

[0006] The unloading mechanism includes a mounting plate, a second Z-axis drive device, a connecting frame, a fixed frame, a support plate, and a first cylinder. The mounting plate is slidably connected to the front side of the bed via a first guide rail pair. The second Z-axis drive device is installed between the mounting plate and the bed to control the up-and-down movement of the mounting plate. Two sets of connecting frames are provided and distributed left and right. One end of the connecting frame is hinged to the mounting plate, and the other end is fixedly connected to the fixed frame. Two first cylinders are provided. The two first cylinders are located below the two sets of connecting frames respectively. One end of the first cylinder is hinged to the mounting plate, and the other end is hinged to the middle position of the connecting frame. The support plate is fixed above the fixed frame.

[0007] Further description of this utility model: the pipe feeding device includes a mounting frame, a chain, a drive sprocket, a first mounting shaft, a driven sprocket, a second mounting shaft, and a pipe support frame; the drive sprocket is mounted on the front end of the mounting frame via the first mounting shaft; the left and right ends of the first mounting shaft extend to the outside of the mounting frame; the driven sprocket is mounted on the rear end of the mounting frame via the second mounting shaft; the chain drive is connected between the first sprocket and the second sprocket; several pipe support frames are provided and evenly distributed and fixed on the outer periphery of the chain.

[0008] In a further description of this utility model, the pipe support frame includes a mounting base plate and side plates vertically connected to the left and right sides of the mounting base plate; the side plates are provided with V-shaped grooves.

[0009] In a further description of this utility model, the pipe feeding device is provided in four sets; the pipe handling device is provided in three sets; the three sets of pipe handling devices are respectively located on the far left, middle and far right of the four sets of pipe feeding devices.

[0010] Further description of this utility model: the drive assembly includes a first geared motor, a drive gear, a driven gear, a synchronous belt, and three transmission rods; the two ends of the three transmission rods are respectively connected to the first mounting shafts of two adjacent sets of pipe feeding devices via couplings; the first geared motor is located on the right side of the second set of pipe feeding devices on the left; the power output end of the first geared motor is connected to the drive gear; the driven gear is mounted on the first mounting shaft of the second set of pipe feeding devices on the left; the synchronous belt connects the drive gear and the driven gear.

[0011] Further description of this utility model: the Y-axis drive device includes a linear slide table and a sliding frame mounted on the power output end of the linear slide table; the first Z-axis drive device includes a second reduction motor, a first gear, and a first rack; the sliding frame and the upright plate are slidably connected up and down through a second guide rail pair; the second reduction motor is mounted on the sliding frame and its power output end is connected to the first gear; the first rack is fixed on the right side of the upright plate and meshes with the first gear.

[0012] Further description of this utility model: the opening and closing clamping device includes a second cylinder, a lifting block, two connecting rods, two positioning shaft supports, and two positioning shafts; the second cylinder is installed on the lower left side of the upright plate and its power output end is connected to the lifting block for driving the lifting block to move up and down; the lifting block is slidably connected to the left side of the upright plate via a third guide rail pair; the two positioning shaft supports are arranged opposite each other and are slidably connected to the upper left side of the upright plate via a fourth guide rail pair; one end of each of the two connecting rods is hinged to the lifting block, and the other end is hinged to the positioning shaft support; the two positioning shafts are vertically installed on the two positioning shaft supports.

[0013] In a further description of the present invention, the second Z-axis drive device includes a third geared motor, a second gear, and a second rack; the third geared motor is mounted on a mounting plate and its power output end is connected to the second gear; the second rack is fixed to the front side of the bed and meshes with the second gear.

[0014] Further description of this utility model: the connecting frame includes a first square tube, a first connecting plate, a second square tube, and a second connecting plate; one end of the first square tube is hinged to the mounting plate via the first connecting plate, and the other end is welded and fixed to the rear part of the bottom surface of the fixing frame; one end of the second square tube is welded and fixed to the middle part of the first square tube, and the other end is welded and fixed to the front part of the bottom surface of the fixing frame; the second connecting plate is welded and fixed to the lower middle part of the second square tube; the power output end of the first cylinder is hinged to the second connecting plate.

[0015] A further description of this utility model includes a second X-axis drive device for controlling the left and right movement of the support chuck.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This design places the clamping chuck and support chuck on the front side of the bed. The pipe feeding device in the loading mechanism controls the pipe to be transported from front to back. The pipes transported to the rear end are supported and clamped by the pipe handling device. The first Z-axis drive device controls the height position of the pipe. The lifting height of the first Z-axis drive device is set according to the different specifications and sizes of the pipes. After lifting, the pipes are clamped by the opening and closing clamping device. Then, the pipes are controlled to move backward by the Y-axis drive device, and the pipes are directly sent between the clamping chuck and support chuck. The clamping chuck and support chuck pick up the pipes. The pipe handling device resets to prepare to transport the next pipe, realizing automatic pipe loading. The loading mechanism of this design directly positions the pipes and sends them between the clamping chuck and support chuck, reducing processes and improving efficiency.

[0018] 2. In the unloading mechanism of this design, the height of the mounting plate is controlled by the second Z-axis drive device, and the angle of the fixed frame is controlled by two sets of first cylinders through the connecting frame. When receiving material, the second Z-axis drive device controls the mounting plate to rise to the set height, and the first cylinders extend, so that the support plate is in a horizontal state. In this state, it is used to receive the cut pipe. When unloading is required, the second Z-axis drive device controls the mounting plate to descend to the set height, and then the second cylinders retract, so that the support plate tilts forward and downward, and the pipe rolls forward and downward for collection. This design has a simple structure, low cost, and can stably collect the cut pipe. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the present invention;

[0020] Figure 2 This is a structural diagram of the feeding mechanism of this utility model;

[0021] Figure 3 This is a structural diagram of the pipe handling device of this utility model;

[0022] Figure 4 This is a structural diagram of the pipe handling device of this utility model from the right view.

[0023] Figure 5 This is a structural diagram of the pipe feeding device of this utility model;

[0024] Figure 6 This is a structural diagram of the feeding mechanism of this utility model;

[0025] Figure 7 This is a structural diagram of the feeding mechanism of this utility model from the rear view. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figure 1-7As shown, an automatic tube cutting machine includes a bed 1, a clamping chuck 2 and a supporting chuck 3 mounted on the bed 1, a first X-axis drive device 4 for controlling the left and right movement of the clamping chuck 2, and a laser tube cutting mechanism 5 and a unloading mechanism 6 mounted on the right side of the bed 1; it also includes a loading mechanism 7; the clamping chuck 2 and the supporting chuck 3 are respectively mounted on the front side of the bed 1; the loading mechanism 7 is located on the front side of the bed 1 and includes a drive assembly 71, several sets of left and right distributed tube feeding devices 72, and several sets of left and right distributed tube handling devices 73; the tubes... The feeding device 72 is used to control the forward and backward transport of pipes; the drive assembly 71 is connected to the pipe feeding device 72 and is used to control all pipe feeding devices 72 to work synchronously; the pipe handling device 73 is located on the side of the rear of the pipe feeding device 72; the pipe handling device 73 includes a Y-axis drive device 731, a first Z-axis drive device 732, a vertical plate 733, a support shaft 734, and an opening and closing clamping device 735; the power output end of the Y-axis drive device 731 is connected to the first Z-axis drive device 732 and is used to control the forward and backward movement of the first Z-axis drive device 732. The power output end of the first Z-axis drive device 732 is connected to the vertical plate 733 to control the vertical movement of the vertical plate 733; the support shaft 734 is mounted on the upper end of the vertical plate 733 via a bearing 7341; the opening and closing clamping device 735 is mounted on one side of the vertical plate 733 to clamp the pipe from the front and rear directions; the pipe feeding device 72 controls the pipe to be conveyed from front to back, and the pipe conveyed to the rear end is supported and clamped by the pipe handling device 73; the first Z-axis drive device 732 controls the height position of the pipe, and the first Z-axis drive device 732 is set according to the different specifications and sizes of the pipe. The lifting height of 2 raises the pipe to the same position as the axis of the pipe, which is the same as the axis of the clamping chuck 2 and the support chuck 3. After lifting, the pipe is clamped by the opening and closing clamping device 735. Then, the pipe is controlled to move backward by the Y-axis drive device 731, and the pipe is directly sent between the clamping chuck 2 and the support chuck 3. The clamping chuck 2 and the support chuck 3 receive the pipe, and the pipe conveying device 73 resets to prepare to convey the next pipe, realizing automatic pipe feeding. The feeding mechanism 7 of this design directly positions the pipe and sends it between the clamping chuck 2 and the support chuck 3, reducing the number of processes and improving efficiency.

[0028] The pipe feeding device 72 includes a mounting frame 721, a chain 722, a drive sprocket 723, a first mounting shaft 724, a driven sprocket 725, a second mounting shaft 726, and a pipe support frame 727. The drive sprocket 723 is mounted on the front end of the mounting frame 721 via the first mounting shaft 724. The left and right ends of the first mounting shaft 724 extend to the outside of the mounting frame 721, respectively. The driven sprocket 725 is mounted on the rear end of the mounting frame 721 via the second mounting shaft 726. The chain 722 is driven between the first sprocket and the second sprocket. Several pipe support frames 727 are provided and evenly distributed and fixed on the outer periphery of the chain 722. The pipe is manually placed from the front end of the pipe feeding device 72 onto the front pipe support frame 727. After the drive assembly 71 controls the pipe feeding device 72 to work, the chain 722 controls the pipe support frame 727 above it to be conveyed backward.

[0029] The pipe support frame 727 includes a mounting base plate 7271 and side plates 7272 vertically connected to the left and right sides of the mounting base plate 7271; the side plates 7272 are provided with V-grooves 7272-1, which support and position the pipes.

[0030] In this design, four sets of pipe feeding devices 72 are provided; three sets of pipe handling devices 73 are provided; the three sets of pipe handling devices 73 are respectively located on the leftmost, middle and rightmost sides of the four sets of pipe feeding devices 72.

[0031] The drive assembly 71 includes a first geared motor 711, a drive gear 712, a driven gear 713, a synchronous belt 714, and three transmission rods 715. The two ends of the three transmission rods 715 are respectively connected to the first mounting shafts 724 of two adjacent sets of pipe feeding devices 72 via couplings 7151. The first geared motor 711 is located on the right side of the second set of pipe feeding devices 72 on the left. The power output end of the first geared motor 711 is connected to the drive gear 712. The driven gear 713 is mounted on the right side of the second set of pipe feeding devices 72 on the left. The first mounting shaft 724 of the pipe feeding device 72 is mounted on the synchronous belt 714, which is connected between the driving gear 712 and the driven gear 713. The first reduction motor 711 controls the driving gear 712 to rotate, and the driving gear 712 drives the driven gear 713 to rotate through the synchronous belt 714. The driven gear 713 drives the first mounting shaft 724 connected to it to rotate, and then outputs power to the first mounting shaft 724 of other pipe feeding devices 72 through the transmission rod 715, thereby controlling all pipe feeding devices 72 to operate synchronously.

[0032] The Y-axis drive device 731 includes a linear slide 7311 and a sliding frame 7312 mounted on the power output end of the linear slide 7311; the first Z-axis drive device 732 includes a second reduction motor 7321, a first gear 7322, and a first rack 7323; the sliding frame 7312 and the vertical plate 733 are slidably connected vertically and horizontally via a second guide rail pair 7324; the second reduction motor 7321 is mounted on the sliding frame 7312 and its power output end is connected to the first gear 7322; the first rack 7323... Fixed to the right side of the upright plate 733 and meshing with the first gear 7322, the Y-axis drive device 731 controls the sliding frame 7312 to move back and forth through the linear slide table 7311, thereby adjusting the front and back position during the material loading and handling process. The first Z-axis drive device 732 controls the rotation of the first gear 7322 through the second reduction motor 7321. The first gear 7322 meshes with the first rack 7323, thereby driving the upright plate 733 to rise and fall. The support shaft 734 on the upright plate 733 supports the pipe, thus the height position of the pipe can be controlled.

[0033] The opening and closing clamping device 735 includes a second cylinder 7351, a lifting block 7352, two connecting rods 7353, two positioning shafts 7355 brackets 7354, and two positioning shafts 7355. The second cylinder 7351 is installed on the lower left side of the upright plate 733 and its power output end is connected to the lifting block 7352, used to drive the lifting block 7352 to move up and down. The lifting block 7352 is slidably connected to the left side of the upright plate 733 via a third guide rail pair 7356. The two positioning shafts 7355 brackets 7354 are arranged opposite each other and slidably connected to the upper left side of the upright plate 733 via a fourth guide rail pair 7357. One end of each of the two connecting rods 7353 is... The other end is hinged to the lifting block 7352, and the other end is hinged to the positioning shaft 7355 bracket 7354 respectively; the two positioning shafts 7355 are respectively vertically installed on the two positioning shaft 7355 brackets 7354. The second cylinder 7351 controls the lifting block 7352 to rise. The lifting block 7352 drives the two positioning shaft 7355 brackets 7354 to slide outward through the connecting rod 7353. The two positioning shafts 7355 open outward. The second cylinder 7351 controls the lifting block 7352 to fall. Then the lifting block 7352 drives the two positioning shaft 7355 brackets 7354 to move inward through the connecting rod 7353. The two positioning shafts 7355 then move inward and clamp the front and rear sides of the pipe.

[0034] The unloading mechanism 6 includes a mounting plate 61, a second Z-axis drive device 62, a connecting frame 63, a fixing frame 64, a support plate 65, and a first cylinder 66. The mounting plate 61 is slidably connected to the front side of the bed 1 via a first guide rail pair 67. The second Z-axis drive device 62 is installed between the mounting plate 61 and the bed 1 to control the up-and-down movement of the mounting plate 61. Two sets of connecting frames 63 are provided and distributed left and right. One end of the connecting frame 63 is hinged to the mounting plate 61, and the other end is fixedly connected to the fixing frame 64. Two first cylinders 66 are provided. The two first cylinders 66 are respectively located below the two sets of connecting frames 63. One end of the first cylinder 66 is hinged to the mounting plate 61, and the other end is hinged to the middle position of the connecting frame 63. The support plate 65 is fixedly connected to the bed 1. The mounting plate 61 is positioned above the fixed frame 64. When the first cylinder 66 is extended, the support plate 65 is in a horizontal state. The height of the mounting plate 61 is controlled by the second Z-axis drive device 62. Then, the angle of the fixed frame 64 is controlled by the two sets of first cylinders 66 through the connecting frame 63. When receiving material, the second Z-axis drive device 62 controls the mounting plate 61 to rise to the set height, and the first cylinder 66 is extended, so that the support plate 65 is in a horizontal state. In this state, it is used to receive the cut pipe. When unloading is required, the second Z-axis drive device 62 controls the mounting plate 61 to descend to the set height, and then the second cylinder 7351 retracts, so that the support plate 65 tilts forward and downward, and the pipe rolls forward and downward for collection. This design has a simple structure, low cost, and can stably collect the cut pipe.

[0035] The second Z-axis drive device 62 includes a third reduction motor 621, a second gear, and a second rack 623; the third reduction motor 621 is mounted on the mounting plate 61 and its power output end is connected to the second gear; the second rack 623 is fixed to the front side of the bed 1 and meshes with the second gear, the third reduction motor 621 controls the rotation of the second gear, the second gear meshes with the second rack 623, and controls the lifting and lowering of the mounting plate 61.

[0036] The connecting frame 63 includes a first square tube 631, a first connecting plate 632, a second square tube 633, and a second connecting plate 634. One end of the first square tube 631 is hinged to the mounting plate 61 via the first connecting plate 632, and the other end is welded to the rear of the bottom surface of the fixing frame 64. One end of the second square tube 633 is welded to the middle of the first square tube 631, and the other end is welded to the front of the bottom surface of the fixing frame 64. The second connecting plate 634 is welded to the lower middle of the second square tube 633. The power output end of the first cylinder 66 is hinged to the second connecting plate 634. In this structure, the two sets of connecting frames 63 are respectively supported and fixed on the front and rear sides of the bottom of the fixing frame 64, which has high stability. The movement of the second connecting plate 634 at the middle position of the second square tube 633 is controlled by the first cylinder 66 to realize the adjustment of the angle and position of the fixing plate.

[0037] It also includes a second X-axis drive device 8 that controls the left and right movement of the support chuck 3. This configuration allows the support chuck 3 to pass through the laser tube cutting mechanism 5, which can optimize the processing of the tube.

[0038] The above description does not limit the technical scope of this invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.

Claims

1. An automatic loading and unloading pipe cutting machine, comprising a bed, a clamping chuck and a supporting chuck installed on the bed, a first X-direction driving device for controlling the left and right movement of the clamping chuck, and a laser pipe cutting mechanism and a unloading mechanism installed on the right end of the bed; characterized in that: The upper feeding mechanism is arranged on the front side of the lathe bed and comprises a driving assembly, a plurality of groups of left and right distributed pipe material feeding devices and a plurality of groups of left and right distributed pipe material carrying devices; the pipe material feeding device is used for controlling the forward transportation of the pipe material; the driving assembly is connected with the pipe material feeding device and is used for controlling the synchronous operation of all the pipe material feeding devices; the pipe material carrying device is arranged beside the rear part of the pipe material feeding device; the pipe material carrying device comprises a Y-axis driving device, a first Z-axis driving device, a vertical plate, a supporting shaft and an opening and closing clamping device; the power output end of the Y-axis driving device is connected with the first Z-axis driving device and is used for controlling the forward and backward movement of the first Z-axis driving device; the power output end of the first Z-axis driving device is connected with the vertical plate and is used for controlling the upward and downward movement of the vertical plate; the supporting shaft is installed on the upper end of the vertical plate through a shaft seat; the opening and closing clamping device is installed on one side of the vertical plate and is used for clamping the pipe material from the front and rear directions; The lower feeding mechanism comprises a mounting plate, a second Z-axis driving device, a connecting frame, a fixed frame, a supporting plate and a first cylinder; the mounting plate is slidably connected on the front side of the lathe bed through a first guide rail pair; the second Z-axis driving device is installed between the mounting plate and the lathe bed and is used for controlling the upward and downward movement of the mounting plate; the connecting frame is arranged in two groups and is arranged in left and right distribution; one end of the connecting frame is hinged with the mounting plate and the other end is fixedly connected with the fixed frame; the first cylinder is arranged in two groups; the two first cylinders are respectively located below the two groups of connecting frames; one end of the first cylinder is hinged with the mounting plate and the other end is hinged with the middle part of the connecting frame; the supporting plate is fixed above the fixed frame.

2. The automatic loading and unloading pipe cutting machine according to claim 1, characterized in that: The pipe material feeding device comprises a mounting frame, a chain, a driving sprocket, a first mounting shaft, a driven sprocket, a second mounting shaft and a pipe material supporting frame; the driving sprocket is installed on the front end of the mounting frame through the first mounting shaft; the left and right ends of the first mounting shaft respectively extend to the outside of the mounting frame; the driven sprocket is installed on the rear end of the mounting frame through the second mounting shaft; the chain is transmissionally connected between the first sprocket and the second sprocket; the pipe material supporting frame is arranged in several groups and is fixedly arranged on the outer periphery of the chain.

3. The automatic loading and unloading pipe cutting machine according to claim 2, characterized in that: The pipe material supporting frame comprises a mounting bottom plate and side plates vertically connected on the left and right sides of the mounting bottom plate; the side plates are provided with V-shaped grooves.

4. The automatic loading and unloading pipe cutting machine according to claim 2, characterized in that: The pipe material feeding device is arranged in four groups; the pipe material carrying device is arranged in three groups; the three groups of pipe material carrying devices are respectively arranged on the leftmost side, the middle and the rightmost side of the four groups of pipe material feeding devices.

5. The automatic loading and unloading pipe cutting machine according to claim 4, characterized in that: The driving assembly comprises a first speed reducer, a driving gear, a driven gear, a synchronous belt and three transmission rods; the two ends of the three transmission rods are respectively connected with the first mounting shafts of the adjacent two groups of pipe material feeding devices through couplings; the first speed reducer is arranged on the right side of the second group of pipe material feeding devices on the left side; the power output end of the first speed reducer is connected with the driving gear; the driven gear is installed on the first mounting shaft of the second group of pipe material feeding devices on the left side; the synchronous belt is connected between the driving gear and the driven gear.

6. The automatic loading and unloading pipe cutting machine according to claim 1, characterized in that: The Y-axis driving device comprises a linear sliding table and a sliding frame installed at the power output end of the linear sliding table; the first Z-axis driving device comprises a second speed reducer, a first gear and a first rack; the sliding frame and the vertical plate are connected in sliding mode through a second guide rail pair; the second speed reducer is installed on the sliding frame and the power output end is connected with the first gear; the first rack is fixed on the right side of the vertical plate and engaged with the first gear.

7. The automatic loading and unloading pipe cutting machine according to claim 1, characterized in that: The opening and closing clamping device comprises a second cylinder, a lifting block, two connecting rods, two positioning shaft supports and two positioning shafts; the second cylinder is installed on the lower part of the left side of the vertical plate and the power output end is connected with the lifting block, for driving the lifting block to move up and down; the lifting block is connected in sliding mode through a third guide rail pair on the left side of the vertical plate; two positioning shaft supports are arranged opposite to each other and connected in sliding mode through a fourth guide rail pair on the upper end of the left side of the vertical plate; one end of each of the two connecting rods is hingedly connected with the lifting block and the other end is hingedly connected with the positioning shaft support; the two positioning shafts are vertically installed on the two positioning shaft supports respectively.

8. The automatic loading and unloading pipe cutting machine according to claim 1, characterized in that: The second Z-axis driving device comprises a third speed reducer, a second gear and a second rack; the third speed reducer is installed on the mounting plate and the power output end is connected with the second gear; the second rack is fixed on the front side of the lathe bed and engaged with the second gear.

9. The automatic loading and unloading pipe cutting machine according to claim 1, characterized in that: The connecting frame comprises a first square tube, a first connecting plate, a second square tube and a second connecting plate; one end of the first square tube is hingedly connected with the mounting plate through the first connecting plate and the other end is welded and fixed with the rear part of the bottom surface of the fixing frame; one end of the second square tube is welded and fixed with the middle part of the first square tube and the other end is welded and fixed with the front part of the bottom surface of the fixing frame; the second connecting plate is welded and fixed below the middle part of the second square tube; the power output end of the first cylinder is hingedly connected with the second connecting plate.

10. The automatic loading and unloading pipe cutting machine according to claim 1, characterized in that: The second X-axis driving device for controlling the left and right movement of the support chuck is further included.

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