An end-processing device for pipe production

Abstract

This invention provides an end-processing device for pipe production, belonging to the field of pipe processing technology. The device includes a base and a spindle box fixedly installed on one side of the top of the base. A clamping assembly is installed on the other side of the top of the base. Above the clamping assembly is a pressure drive assembly for clamping the pipe. The base is hollow and has an intermittent drive assembly for intermittently rotating the clamping assembly. The clamping assembly includes a rotating mounting plate rotatably installed on the top of the base. A fixed clamping seat is fixedly installed on the top of the rotating mounting plate. The fixed clamping seat has a lower fixing groove on its top and a movable clamping seat on its top. The movable clamping seat has an upper fixing groove on its bottom. The upper and lower fixing grooves combine to form a complete circular groove. This device can complete the processing of both ends of a bend in a single clamping operation, eliminating the need to turn the bend around and re-clamp it during processing.

Description

Technical Field

[0001] This invention belongs to the field of pipeline processing technology, and specifically relates to an end processing device for pipeline production. Background Technology

[0002] When subsequent welding and other processing are carried out on the pipeline, a pipe bevel needs to be machined on the pipe end face first. There are various methods for processing the pipe bevel, which can be flexibly selected according to the pipe material, diameter, wall thickness and construction site conditions. Mechanical cutting mainly adopts two structures: external clamping and internal support. The external clamping type refers to the equipment cutting by clamping the outer wall of the steel pipe. Its structure is simple and lightweight. Regardless of whether the equipment is external clamping or internal support, it is necessary to ensure that the steel pipe is firmly clamped to maintain the stability of the processing and the cutting accuracy.

[0003] Chinese patent CN120079930B discloses a pipe welding beveling machine with automatic positioning function, including a frame and a drive frame. Multiple support arms are arranged between the drive frame and the frame, and a cutting component is arranged on the end of the drive frame away from the frame. The patent document describes how the drive frame moves along the axial direction of the pipe, simultaneously driving the multiple support arms to unfold radially along the pipe. After the multiple support arms are in contact with the inner wall of the pipe, the device can achieve automatic fixation by utilizing the multi-point contact support arm structure. It is suitable for operation in narrow spaces and improves the convenience of construction.

[0004] Existing pipe end processing equipment can only use external clamping devices to process the beveling of the ends of bends due to the bending structure of the bends. Existing equipment can only clamp one bend at a time. After processing one end of the pipe, it needs to be turned around to process the other end, which results in low processing efficiency of the existing equipment. Summary of the Invention

[0005] The purpose of this invention is to provide an end-processing device for pipe production, which aims to solve the problem that in the prior art, only one bend can be clamped at a time, and after processing one end of the pipe, it needs to be turned around to process the other end, resulting in low processing efficiency of the existing device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an end processing device for pipe production, comprising a base and a spindle box fixedly installed on one side of the top of the base, a clamping assembly installed on the other side of the top of the base, and a clamping drive assembly for driving the clamping assembly to clamp the pipe is provided above the clamping assembly; the base is hollow inside and is equipped with an intermittent drive assembly for driving the clamping assembly to rotate intermittently.

[0007] The clamping assembly includes a rotating mounting plate rotatably mounted on the top of the base. A fixed clamping seat is fixedly mounted on the top of the rotating mounting plate. A lower fixing groove is opened on the top of the fixed clamping seat. A movable clamping seat is mounted on the top of the fixed clamping seat. An upper fixing groove is opened on the bottom of the movable clamping seat. The upper fixing groove and the lower fixing groove are combined to form a complete circular groove.

[0008] The beneficial effect of this invention is that by setting up a clamping assembly, a pressing drive assembly, and an intermittent drive assembly, the pressing drive assembly first drives the movable clamping seat to rise vertically, placing the bent pipe to be processed into the lower fixing groove opened at the top of the fixed clamping seat. Next, the pressing drive assembly drives the movable clamping seat to descend vertically, pressing the bent pipe into the lower fixing groove opened at the top of the fixed clamping seat through the upper fixing groove opened at the bottom of the movable clamping seat, thereby completing the clamping and fixing of the bent pipe. Then, a pipe beveling cutter mounted on the spindle of the spindle box is used to bevele one end of the bent pipe. After the beveling of this end is completed, the intermittent drive assembly is activated, causing it to rotate 90 degrees by rotating the mounting plate, allowing the other end of the bent pipe to rotate to the pipe beveling cutter, and then beveling the other end of the bent pipe. In this way, this device can complete the processing of both ends of the bent pipe in one clamping operation, eliminating the need to turn the bent pipe around and re-clamp it during processing.

[0009] The fixed clamping seat has a square cross-section when viewed from above. It has two lower fixing slots, which are symmetrically arranged. The lower fixing slots are arc-shaped, and the two ends of the arc-shaped slots are located at the top center of the two adjacent side walls of the fixed clamping seat. There are two movable clamping seats, which have an isosceles triangle cross-section when viewed from above. The two movable clamping seats are symmetrical to each other. The cross-section of the two movable clamping seats combined is a square when viewed from above. The movable clamping seats have one upper fixing slot, which is symmetrically arranged with the two lower fixing slots on the fixed clamping seat.

[0010] Its advantage lies in the fact that, by setting up two lower fixing slots and a fixed clamping seat, this device can simultaneously clamp two bent pipes. When beveling the end of the bent pipe in one of the lower fixing slots, the operator can quickly replace the bent pipe that has already been processed in the other lower fixing slot. In this way, the device can continuously bevele the ends of bent pipes. During the loading and unloading of bent pipes, there is no need to stop the device, which greatly shortens the processing cycle, reduces equipment downtime, and thus greatly improves the processing efficiency of this device.

[0011] The top of the movable clamping seat is provided with a limiting groove. The limiting grooves on the two movable clamping seats are combined to form a complete ring. Limiting sliders are slidably installed in the limiting grooves on both movable clamping seats. Among the corresponding limiting sliders of the two movable clamping seats, the top of the limiting slider away from the spindle box is equipped with a connecting rod, and the top of the other limiting slider is equipped with a fixing screw. The clamping drive assembly includes a mounting plate located above the clamping assembly. A lifting drive component is fixedly installed on the top of the mounting plate. The top of the connecting rod moves through the mounting plate and is connected to the output end of the lifting drive component. The top of the fixing screw passes through the mounting plate and is threadedly connected to it.

[0012] The lifting drive component is an electric telescopic rod, whose telescopic end is fixedly connected to the connecting rod.

[0013] The effect is that, by setting a limiting groove, a limiting slider, a fixing screw, and a connecting rod, the fixing screw, with the help of the limiting slider, can clamp and fix one of the movable clamping seats near the pipe beveling cutter. At this time, the upper fixing groove at the bottom of the movable clamping seat and the lower fixing groove at the top of the fixed clamping seat cooperate with each other to clamp and fix the bent pipe to be processed, preventing the end of the bent pipe from loosening during processing and making the workpiece scrap. At the same time, the connecting rod, through the limiting slider, can drive the other movable clamping seat to rise and fall, facilitating the replacement of the bent pipe in the upper fixing groove at the bottom of the movable clamping seat and the lower fixing groove at the top of the fixed clamping seat. After the replacement is completed, the intermittent drive assembly drives the fixed clamping seat and the movable clamping seat to rotate. At the same time, the two limiting sliders slide relative to the two movable clamping seats, thereby changing the positions of the two movable clamping seats, thus ensuring that when replacing the processed bent pipe, it will not affect the other bent pipe being processed.

[0014] The movable clamping seat has limit guide holes on both sides of its top, with the axis extending in the vertical direction. The limit guide holes penetrate the movable clamping seat, and a guide limit post is slidably sleeved inside the limit guide hole. The bottom end of the guide limit post extends out of the limit guide hole and is fixedly connected to the top of the fixed clamping seat.

[0015] Its effect lies in the fact that, by setting limit guide holes and guide limit posts, and utilizing the sliding fit between the two, the movement of the movable clamping seat in a specific direction can be guided, limited, and clamped. In this way, it can prevent the movable clamping seat from shifting when clamping the bent pipe with the fixed clamping seat, thereby improving the efficiency of the device in clamping the fixed bent pipe.

[0016] Support columns are fixedly installed between the bottom four corners of the mounting plate and the top of the base.

[0017] The cross-section of the limiting slide is T-shaped, and the limiting slider is a T-shaped slider.

[0018] The effect is that by setting a T-shaped limiting groove and a T-shaped slider, the limiting slider can be effectively restricted to sliding only in the limiting groove, which avoids the limiting slider from separating from the movable clamping seat when it is raised and lowered, and ensures that the replacement of the other bend can be carried out smoothly when one bend is being processed.

[0019] The intermittent drive assembly includes a drive motor installed inside the base. A drive shaft and a transmission shaft extending vertically are rotatably mounted on the inner top wall of the base. The transmission shaft is coaxially arranged with the rotating mounting plate. The top end of the transmission shaft rotates through the top wall of the base and is fixedly connected to the bottom of the rotating mounting plate. The bottom of the drive shaft is driven by the output shaft of the drive motor. An intermittent transmission mechanism is used to drive the drive shaft and the transmission shaft.

[0020] The intermittent transmission mechanism includes a transmission plate fixedly installed on the outer wall of the drive shaft and a transmission disc fixedly installed on the bottom of the outer wall of the drive shaft. The transmission disc is coaxially arranged with the drive shaft. Four transmission grooves are evenly distributed along its circumference on the side wall of the transmission disc. The transmission grooves penetrate the transmission disc in the vertical direction and extend in the radial direction of the transmission disc. A transmission column is fixedly installed at the end of the transmission plate away from the drive shaft. The transmission column is slidably connected to the transmission groove.

[0021] Its effect is that, by setting up an intermittent drive component, it is possible to complete the timed and angled rotation of the fixed clamping seat and the movable clamping seat without stopping the drive motor, thereby avoiding frequent start and stop of the drive motor, thus improving the service life of the drive motor and further improving the service life of the device.

[0022] The spindle box includes a housing, on which a machine tool spindle is movably mounted. On the end of the machine tool spindle near the clamping assembly, a pipe beveling cutter is mounted. A handwheel for driving the machine tool spindle to slide along its axial direction is rotatably mounted on the front side of the housing.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. By setting up a clamping assembly, a pressing drive assembly, and an intermittent drive assembly, the pressing drive assembly first drives the movable clamping seat to rise vertically, placing the bent pipe to be processed into the lower fixing groove opened at the top of the fixed clamping seat. Next, the pressing drive assembly drives the movable clamping seat to descend vertically, pressing the bent pipe into the lower fixing groove opened at the top of the fixed clamping seat through the upper fixing groove opened at the bottom of the movable clamping seat, thus completing the clamping and fixing of the bent pipe. Then, a pipe beveling cutter mounted on the spindle of the spindle box is used to bevele one end of the bent pipe. After the beveling of this end is completed, the intermittent drive assembly is activated, causing it to rotate 90 degrees by rotating the mounting plate, rotating the fixed clamping seat and the movable clamping seat, allowing the other end of the bent pipe to rotate to the pipe beveling cutter, and then beveling the other end of the bent pipe. In this way, this device can complete the processing of both ends of the bent pipe in one clamping, without the need to turn the bent pipe around and re-clamp it during processing.

[0025] 2. By setting up two lower fixing slots and one fixed clamping seat, this device can clamp two bends simultaneously. When beveling the end of the bend in one of the lower fixing slots, the operator can quickly replace the already processed bend in the other lower fixing slot. In this way, the device can continuously bevele the ends of bends. During the loading and unloading of bends, there is no need to stop the device, which greatly shortens the processing cycle, reduces equipment downtime, and thus greatly improves the processing efficiency of this device.

[0026] 3. By setting up a limiting groove, a limiting slider, a fixing screw, and a connecting rod, the fixing screw, with the help of the limiting slider, can clamp and fix one of the movable clamping seats near the pipe beveling cutter. At this time, the upper fixing groove at the bottom of the movable clamping seat and the lower fixing groove at the top of the fixed clamping seat cooperate to clamp and fix the bent pipe to be processed, preventing the end of the bent pipe from loosening during processing and making the workpiece scrap. At the same time, the connecting rod, through the limiting slider, can drive the other movable clamping seat to rise and fall, facilitating the replacement of the bent pipe in the upper fixing groove at the bottom of the movable clamping seat and the lower fixing groove at the top of the fixed clamping seat. After replacement, the intermittent drive assembly drives the fixed clamping seat and the movable clamping seat to rotate. At the same time, the two limiting sliders slide relative to the two movable clamping seats, thereby changing the positions of the two movable clamping seats, thus ensuring that replacing the processed bent pipe will not affect the other bent pipe being processed. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the pipe processing device in this invention;

[0028] Figure 2 This is a schematic diagram of the main sectional view of the pipe processing device in this invention;

[0029] Figure 3 This is a bottom sectional view of the pipe processing device in this invention;

[0030] Figure 4 This is a three-dimensional structural diagram of the clamping assembly in this invention;

[0031] Figure 5 This is a schematic diagram of the main structure of the clamping assembly in this invention;

[0032] Figure 6 This is a top view of the clamping assembly in this invention.

[0033] Figure 7 This is a top view of the fixed clamping seat in this invention.

[0034] Figure 8 This is a bottom view of the movable clamping seat in this invention.

[0035] Figure 9 This is a three-dimensional structural diagram of the movable clamping seat in this invention.

[0036] In the diagram: 1. Base; 2. Spindle box; 21. Housing; 22. Handwheel; 23. Machine tool spindle; 3. Clamping assembly; 31. Rotating mounting plate; 32. Fixed clamping seat; 321. Lower fixed groove; 33. Movable clamping seat; 331. Upper fixed groove; 332. Limiting slide groove; 333. Limiting guide hole; 34. Guide limiting post; 35. Limiting slider; 351. Connecting hole; 36. Connecting rod; 37. Fixing screw; 4. Pressing drive assembly; 41. Mounting plate; 42. Support column; 43. Lifting drive component; 5. Intermittent drive assembly; 51. Drive motor; 52. Drive shaft; 53. Transmission plate; 54. Transmission column; 55. Transmission shaft; 56. Transmission disc; 561. Transmission groove. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0038] Please see Figures 1-9 The present invention provides the following technical solution: an end-processing device for pipe production, comprising a base 1, a spindle box 2, a clamping assembly 3, a pressure drive assembly 4, and an intermittent drive assembly 5. The spindle box 2 and the clamping assembly 3 are respectively disposed at both ends of the top of the base 1. The pressure drive assembly 4 is installed above the clamping assembly 3 and is used to clamp and fix the bent pipe to be processed by the clamping assembly 3. The base 1 is hollow inside, and the intermittent drive assembly 5 is installed on the inner wall of the hollow groove of the base 1, used to cause the clamping assembly 3 to rotate intermittently, with each rotation angle being 90 degrees.

[0039] refer to Figure 2 As shown, the spindle box 2 includes a housing 21. A machine tool spindle 23 is movably mounted on one end of the housing 21 near the clamping assembly 3. The machine tool spindle 23 can slide within the spindle box 2 along its own axis. A pipe beveling cutter is detachably mounted on one end of the machine tool spindle 23 near the clamping assembly 3. A handwheel 22 is rotatably mounted on the front side of the housing 21 to drive the machine tool spindle 23 to slide along its axis, thereby allowing the pipe beveling cutter to approach the end of the bend to complete the beveling process.

[0040] refer to Figures 4-9 As shown, the clamping assembly 3 includes a rotating mounting plate 31, a fixed clamping seat 32, a movable clamping seat 33, a guide limiting post 34, a limiting slider 35, a connecting rod 36, and a fixing screw 37.

[0041] The rotating mounting plate 31 is mounted on the top of the base 1 and can rotate, and its bottom is connected to the output shaft of the intermittent drive assembly 5.

[0042] The fixed clamping seat 32 is fixedly installed on the top of the rotating mounting plate 31. The top view of the fixed clamping seat 32 is a square, and its center line coincides with the axis of the rotating mounting plate 31. Two lower fixing grooves 321 are formed on the top of the fixed clamping seat 32, and the two lower fixing grooves 321 are symmetrically arranged. The lower fixing grooves 321 are arc grooves that match the bent pipe, and the two ends of the arc grooves are located at the top center of two adjacent side walls of the fixed clamping seat 32, respectively. The cross-section of the lower fixing groove 321 is semi-circular, and its diameter is equal to the outer diameter of the bent pipe.

[0043] There are two movable clamping seats 33, both located above the fixed clamping seat 32. The top view of each movable clamping seat 33 is an isosceles triangle. The two movable clamping seats 33 are symmetrical, and their combined top view is a square. An upper fixing groove 331 is formed at the bottom of each movable clamping seat 33. The cross-section of the upper fixing groove 331 is semi-circular, and its diameter is equal to the outer diameter of the bent pipe. The upper fixing grooves 331 on the two movable clamping seats 33 correspond vertically to the two lower fixing grooves 321 on the fixed clamping seat 32, forming a complete circular groove. A limiting slide groove 332 is formed at the top of each movable clamping seat 33. The limiting slide grooves 332 on the two movable clamping seats 33 combine to form a complete ring. The cross-section of the limiting slide groove 332 is T-shaped or L-shaped, etc. Both sides of the top of the two movable clamping seats 33 are provided with limiting guide holes 333 extending along the vertical direction, and the limiting guide holes 333 penetrate through the movable clamping seats 33.

[0044] The number of guide limiting posts 34 is the same as the number of limiting guide holes 333, and multiple guide limiting posts 34 are slidably sleeved within corresponding multiple limiting guide holes 333. The bottom end of the guide limiting post 34 extends out of the limiting guide hole 333 and is fixedly connected to the top of the fixed clamping seat 32. By setting the guide limiting posts 34 and limiting guide holes 333, the movable clamping seat 33 is guided and limited in a specific direction through their mutual cooperation, preventing the movable clamping seat 33 from shifting when it cooperates with the fixed clamping seat 32 to clamp the bent pipe.

[0045] There are two limiting sliders 35, which are slidably fitted into the limiting grooves 332 on the top of the two movable clamping seats 33. The limiting sliders 35 are designed in a T-shape or an L-shape to ensure that the limiting sliders 35 are adapted to the limiting grooves 332, thereby enabling the limiting sliders 35 to be stably slidably engaged in the limiting grooves 332.

[0046] The top of the limiting slider 35 is provided with a connecting hole 351. In the limiting slider 35 corresponding to the two movable clamping seats 33, the connecting rod 36 is detachably installed in the connecting hole 351 on the top of the limiting slider 35 that is away from the spindle box 2, and the fixing screw 37 is detachably installed in the connecting hole 351 on the top of the other limiting slider 35.

[0047] refer to Figure 1 and Figure 2 As shown, the clamping drive assembly 4 includes a mounting plate 41, a support column 42, and a lifting drive component 43.

[0048] Mounting plate 41 is positioned above clamping assembly 3 and parallel to the top surface of base 1. Four support columns 42 are located at the four corners of the bottom of mounting plate 41, with their tops fixedly connected to the bottom of mounting plate 41 and their bottoms fixedly connected to the top of base 1, thus providing support and fixation for mounting plate 41. Lifting drive component 43 is fixedly mounted on the top of mounting plate 41. The top of connecting rod 36 passes through mounting plate 41 and is connected to the output end of lifting drive component 43, thereby driving the movable clamping seat 33 to rise and fall, facilitating the replacement of the processed bent pipe. The top of fixing screw 37 passes through mounting plate 41 and engages with its thread, restricting the movement of movable clamping seat 33 to ensure normal processing of the bent pipe and prevent loosening of the clamp during processing.

[0049] In this embodiment, the lifting drive component 43 is an electric telescopic rod, and its telescopic end is fixedly connected to the connecting rod 36. In a preferred embodiment, the lifting drive component 43 can also be a hydraulic rod or a cylinder, and their telescopic ends are also fixedly connected to the connecting rod 36. In other embodiments, the lifting drive component 43 can also be an electric motor. In this case, a gear needs to be installed on the output shaft of the electric motor, and a rack that meshes with the gear is installed on the connecting rod 36. The electric motor drives the gear to rotate, and the gear drives the connecting rod 36 to rise and fall along its axial direction through meshing with the rack.

[0050] refer to Figure 2 and Figure 3 As shown, the intermittent drive assembly 5 includes a drive motor 51, a drive shaft 52, and a transmission shaft 55.

[0051] The drive motor 51 is fixedly mounted on the inner bottom wall of the base 1. The drive motor 51 is a geared motor with a reduction gearbox, capable of outputting low speed and high torque for convenient continuous motor rotation. The drive shaft 52 and transmission shaft 55 are rotatably mounted on the inner top wall of the base 1. The transmission shaft 55 is coaxially arranged with the rotating mounting plate 31. The top end of the transmission shaft 55 rotatably passes through the top wall of the base 1 and is fixedly connected to the bottom of the rotating mounting plate 31. The bottom of the drive shaft 52 is connected to the output shaft of the drive motor 51 via a coupling. The drive shaft 52 and transmission shaft 55 are also connected via a clearance transmission mechanism.

[0052] In this embodiment, the gap transmission mechanism consists of a transmission plate 53, a transmission column 54, and a transmission disc 56. The transmission plate 53 is fixedly mounted on the outer wall of the drive shaft 52, and the transmission column 54 is fixedly mounted on the end of the transmission plate 53 away from the drive shaft 52. The transmission disc 56 is coaxially arranged with the drive shaft 55 and is fixedly sleeved on the bottom of the outer wall of the drive shaft 55. Four transmission grooves 561 are evenly distributed along its circumference on the side wall of the transmission disc 56. The transmission grooves 561 penetrate the transmission disc 56 in the vertical direction and extend in the radial direction of the transmission disc 56. As the drive shaft 52 rotates, the transmission column 54 slides sequentially within the four transmission grooves 561.

[0053] In other embodiments, the gap transmission mechanism may also employ a combination of a gear and a half gear. The gear is coaxially arranged with the transmission shaft 55 and fixedly sleeved on the bottom outer wall of the transmission shaft 55; the half gear is coaxially arranged with the drive shaft 52 and fixedly sleeved on the outer wall of the drive shaft 52. As the drive shaft 52 rotates, the half gear meshes with the gear with a gap.

[0054] The implementation principle of this invention is as follows: When beveling is required at the end of the bent pipe, the spindle motor is started to drive the spindle to rotate; the lifting drive 43 is started to drive the connecting rod 36 to rise. The connecting rod 36 drives the connected limiting slider 35 to rise, and the limiting slider 35 in turn drives the movable clamping seat 33 to rise. At this time, the bent pipe to be processed is placed on the fixed clamping seat 32 and in the lower fixing groove 321 below the raised movable clamping seat 33. Then, the lifting drive 43 is controlled to drive the movable clamping seat 33 to descend to its original position through the connecting rod 36 and the limiting slider 35. At this time, the upper fixing groove 331 at the bottom of the movable clamping seat 33 cooperates with the lower fixing groove 321 at the top of the fixed clamping seat 32 to clamp and fix the bent pipe to be processed.

[0055] Start the drive motor 51, causing it to rotate the drive shaft 52, which in turn rotates the transmission plate 53. When the transmission plate 53 rotates to the transmission disk 56, the transmission column 54 on the transmission plate 53 slides into a transmission groove 561 on the transmission disk 56. As the drive shaft 52 continues to rotate, the transmission column 54 slides within the transmission groove 561, causing the transmission disk 56 to rotate. The transmission disk 56 then rotates the drive shaft 55, which in turn rotates the rotating mounting disk 31. When the transmission column 54 slides out of the transmission groove 561, the transmission disk 56 has just rotated the rotating mounting disk 31 by 90 degrees. When the rotating mounting plate 31 drives the fixed clamping seat 32 and the movable clamping seat 33 to rotate, so that one end of the bent pipe reaches the spindle box 2, the limiting slider 35 in the limiting slide groove 332 at the top of the movable clamping seat 33 slides relative to the limiting slide groove 332 of the movable clamping seat 33, so that the movable clamping seat 33 clamping the bent pipe moves to below the limiting slider 35 connected to the fixing screw 37. At this time, the fixing screw 37 and the limiting slider 35 cooperate to press the movable clamping seat 33 onto the fixed clamping seat 32.

[0056] When one end of the bent pipe rotates to the spindle box 2, the movable clamping seat 33, which has not yet clamped the bent pipe, moves to below the limiting slider 35 connected to the connecting rod 36. At this time, the lifting drive 43 is activated, causing the connecting rod 36 to rise. The connecting rod 36 causes the limiting slider 35 connected to it to rise, and the limiting slider 35 in turn causes the movable clamping seat 33 to rise. Subsequently, the bent pipe to be processed is placed on the fixed clamping seat 32 and into the lower fixing groove 321 below the raised movable clamping seat 33. Then, the lifting drive 43 is controlled to cause the movable clamping seat 33 to descend to its original position through the connecting rod 36 and the limiting slider 35. At this time, the upper fixing groove 331 at the bottom of the movable clamping seat 33 cooperates with the lower fixing groove 321 at the top of the fixed clamping seat 32 to clamp and fix the bent pipe to be processed.

[0057] When one end of the bend rotates to the spindle box 2, turn handwheel 22 to drive the machine tool spindle 23 towards the bend, allowing the pipe beveling cutter to contact the end face of the bend and perform beveling. After beveling at this end, turn handwheel 22 in the opposite direction to drive the machine tool spindle 23 away from the bend. At this time, the intermittent drive assembly 5 drives the rotating mounting plate 31 to rotate, causing the other end of the bend to rotate to the spindle box 2. Then, turn handwheel 22 again to drive the machine tool spindle 23 towards the bend, allowing the pipe beveling cutter to contact the other end face of the bend and perform beveling.

[0058] After the beveling of the other end face of the bend is completed, the intermittent drive assembly 5 drives the rotating mounting plate 31 to rotate, causing the movable clamping seat 33, which holds the completed bend, to move below the limiting slider 35 connected to the connecting rod 36. The other movable clamping seat 33, which holds the bend to be processed, moves below the limiting slider 35 connected to the fixing screw 37. The fixing screw 37, the limiting slider 35, and the limiting groove 332 tightly close the movable clamping seat 33 and the fixed clamping seat 32. At this time, turning the handwheel 22 drives the machine tool spindle 23 to move closer to the bend, allowing the pipe beveling cutter to contact the end face of the bend for beveling. Simultaneously, the lifting drive assembly 43 is activated, causing the connecting rod 36 to rise. The connecting rod 36 then causes the connected limiting slider 35 to rise, which in turn causes the movable clamping seat 33 to rise.

[0059] Subsequently, the processed bent pipe is removed, and the bent pipe to be processed is placed on the fixed clamping seat 32 and in the lower fixed groove 321 below the raised movable clamping seat 33. Then, the lifting drive component 43 is controlled to drive the movable clamping seat 33 to descend to its original position through the connecting rod 36 and the limiting slider 35. At this time, the upper fixed groove 331 at the bottom of the movable clamping seat 33 cooperates with the lower fixed groove 321 at the top of the fixed clamping seat 32 to clamp and fix the bent pipe to be processed.

[0060] By repeating the above operating steps, this device can continuously and uninterruptedly perform beveling on both ends of the bend. Moreover, the processing of both ends of the bend can be completed in a single clamping operation. At the same time, while processing the end faces of the bend, the bend that has been clamped and processed on the other side of the fixed clamping seat 32 can be replaced.

[0061] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention.

Claims

1. An end-processing device for pipe production, comprising a base and a spindle box fixedly mounted on one side of the top of the base, characterized in that, A clamping assembly is installed on the other side of the top of the base, and a clamping drive assembly is provided above the clamping assembly to clamp the pipe; the base is hollow inside and is equipped with an intermittent drive assembly to drive the clamping assembly to rotate intermittently. The clamping assembly includes a rotating mounting plate rotatably mounted on the top of the base, a fixed clamping seat fixedly mounted on the top of the rotating mounting plate, a lower fixing groove opened on the top of the fixed clamping seat, a movable clamping seat mounted on the top of the fixed clamping seat, and an upper fixing groove opened on the bottom of the movable clamping seat. The upper fixing groove and the lower fixing groove are combined to form a complete circular groove. The fixed clamping seat has a square cross-section when viewed from above. There are two lower fixing slots, which are symmetrically arranged. Each lower fixing slot is an arc groove, and the two ends of the arc groove are located at the top center of two adjacent side walls of the fixed clamping seat. There are two movable clamping seats, which have an isosceles triangle cross-section when viewed from above. The two movable clamping seats are symmetrically arranged. The cross-section of the two movable clamping seats combined is a square when viewed from above. Each movable clamping seat has one upper fixing slot, and the upper fixing slots on the two movable clamping seats are symmetrically arranged vertically with the two lower fixing slots on the fixed clamping seat. The top of the movable clamping seat is provided with a limiting groove. The limiting grooves on the two movable clamping seats are combined to form a complete ring. Limiting sliders are slidably installed in the limiting grooves on the two movable clamping seats. Among the limiting sliders corresponding to the two movable clamping seats, the top of the limiting slider away from the spindle box is equipped with a connecting rod, and the top of the other limiting slider is equipped with a fixing screw. The clamping drive assembly includes a mounting plate located above the clamping assembly. A lifting drive component is fixedly installed on the top of the mounting plate. The top of the connecting rod movably passes through the mounting plate and is connected to the output end of the lifting drive component. The top of the fixing screw passes through the mounting plate and is threadedly connected to it. The lifting drive component is an electric telescopic rod, whose telescopic end is fixedly connected to the connecting rod.

2. The end-processing equipment for pipeline production according to claim 1, characterized in that: The movable clamping seat has limit guide holes on both sides of its top, with the axis extending in the vertical direction. The limit guide holes penetrate the movable clamping seat, and a guide limit post is slidably sleeved in the limit guide hole. The bottom end of the guide limit post extends out of the limit guide hole and is fixedly connected to the top of the fixed clamping seat.

3. The end-processing equipment for pipeline production according to claim 1, characterized in that: Support columns are fixedly installed between the four bottom corners of the mounting plate and the top of the base.

4. The end-processing equipment for pipeline production according to claim 1, characterized in that: The cross-section of the limiting groove is T-shaped, and the limiting slider is a T-shaped slider.

5. The end-processing equipment for pipeline production according to claim 1, characterized in that: The intermittent drive assembly includes a drive motor installed inside the base. A drive shaft and a transmission shaft extending vertically are rotatably mounted on the inner top wall of the base. The transmission shaft is coaxially arranged with the rotating mounting plate. The top end of the transmission shaft rotates through the top wall of the base and is fixedly connected to the bottom of the rotating mounting plate. The bottom of the drive shaft is drivenly connected to the output shaft of the drive motor. An intermittent transmission mechanism is driven between the drive shaft and the transmission shaft.

6. The end-processing equipment for pipeline production according to claim 5, characterized in that: The gap transmission mechanism includes a transmission plate fixedly installed on the outer wall of the drive shaft and a transmission disc fixedly installed at the bottom of the outer wall of the drive shaft. The transmission disc is coaxially arranged with the drive shaft. Four transmission grooves are evenly distributed along the circumference of the transmission disc on its side wall. The transmission grooves penetrate the transmission disc in the vertical direction and extend in the radial direction of the transmission disc. A transmission column is fixedly installed at the end of the transmission plate away from the drive shaft. The transmission column is slidably connected to the transmission groove.

7. The end-processing equipment for pipeline production according to claim 1, characterized in that: The spindle box includes a housing, on which a machine tool spindle is movably mounted. A pipe beveling cutter is mounted on the end of the machine tool spindle near the clamping assembly. A handwheel for driving the machine tool spindle to slide along its axial direction is rotatably mounted on the front side of the housing.

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