Pipe end cutting machine

Abstract

The present invention discloses an integrated machine for cutting pipe ends, which includes: a workbench; a straightening mechanism, arranged on the workbench, for straightening pipe fittings; a first conveying mechanism, arranged on one side of the workbench, for conveying the pipe fittings to the straightening mechanism; a shearing and breaking mechanism, arranged on the workbench, for cutting the pipe wall of the pipe fittings and breaking the pipe fittings; a second conveying mechanism, arranged on the workbench, for conveying the pipe fittings to the shearing and breaking mechanism; two pressing mechanisms, arranged on the workbench, for forming a clamping portion and an annular portion on both ends of the pipe fittings; a positioning mechanism, arranged between the two pressing mechanisms, for adjusting the front and rear positions of the pipe fittings; a transfer mechanism, arranged on the workbench, for transferring the pipe fittings between the shearing and breaking mechanism, the two pressing mechanisms, and the positioning mechanism. The integrated machine for cutting pipe ends with the above structure integrates the straightening, shearing, and forming of the ports and the pipe body at both ends of the pipe fittings into one, reduces manual operations, improves production efficiency, and has a high degree of automation.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing, and in particular to an integrated machine for cutting pipe ends. Background Art

[0002] At present, pipe fittings are widely used as connectors in the refrigeration industry. Before use, they need to be straightened, sheared, and the ends of the pipe fittings and the pipe body must be formed. Figure 8 , it is necessary to machine a bulge on the pipe for positioning and clamping. This bulge includes a clamping portion 101 formed at the end of the pipe and an annular portion 102 protruding outward from the pipe body. However, the existing equipment for each process of pipe processing is scattered and independent, resulting in inconsistent pipe processing. In addition, manual auxiliary operations such as workpiece transfer are required between processes, resulting in low production efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an integrated pipe end cutting machine that integrates pipe straightening, shearing, end-end end cutting, and pipe body forming, thereby reducing manual labor, improving production efficiency, and achieving a high degree of automation.

[0004] According to an embodiment of the present invention, a pipe end cutting integrated machine includes: a workbench; a straightening mechanism, which is arranged on the workbench and is used to straighten the pipe fittings; a first conveying mechanism, which is arranged on one side of the workbench and is used to convey the pipe fittings to the straightening mechanism; a shearing and breaking mechanism, which is arranged on the workbench and is used to cut at least part of the pipe wall of the pipe fittings and break the pipe fittings; a second conveying mechanism, which is arranged on the workbench and is used to convey the corrected pipe fittings to the shearing and breaking mechanism; two pressing mechanisms, which are arranged on the workbench and are used to form clamping parts and annular parts on both ends of the sheared pipe fittings; a positioning mechanism, which is arranged between the two pressing mechanisms and is used to adjust the front and rear positions of the pipe fittings that have been formed for the first time; and a transfer mechanism, which is arranged on the workbench and is used to transfer the sheared pipe fittings between the shearing and breaking mechanism, the two pressing mechanisms and the positioning mechanism.

[0005] The integrated machine for cutting pipe ends according to the embodiment of the present invention has at least the following beneficial effects: when in use, the pipe fittings are first transported to the straightening mechanism through the first conveying mechanism for straightening, and then transported to the shearing and breaking mechanism through the second conveying mechanism to cut the pipe fittings to a certain length and break them. Subsequently, the transfer mechanism transports the sheared pipe fittings to the two pressing mechanisms and the positioning mechanism, so that the pipe fittings can complete the effect of forming the clamping part and the ring part at both ends under the action of the two pressing mechanisms, and then the straightening, shearing, both ends of the pipe and the forming of the pipe body are integrated into one, which reduces manual auxiliary operations, improves production efficiency, and has a high degree of automation.

[0006] In some embodiments of the present invention, the pressing mechanism includes a first clamping die assembly, a second clamping die assembly and a pushing die assembly, the first clamping die assembly having a first clamping cavity for clamping the pipe fitting and a first molding cavity connected to one end of the first clamping cavity, the second clamping die assembly having a second clamping cavity for clamping the pipe fitting and a second molding cavity connected to one end of the second clamping cavity, the first clamping die assembly and the second clamping die assembly are capable of moving relative to each other, the pushing die assembly is provided with a pushing portion nested with the port of the pipe fitting, after the pipe fitting is engaged with the pushing portion, the pushing portion is used to push the second clamping die assembly toward one side of the first clamping die assembly, so that the pipe fitting is pressurized in the first molding cavity to form the annular portion, and is pressurized in the second molding cavity to form the clamping portion.

[0007] In some embodiments of the present invention, the first clamping assembly includes a first clamping block and a second clamping block arranged opposite to each other and a first linear drive that drives the two clamping blocks to move closer to or away from each other, the first clamping block and the second clamping block each have a semi-circular arc groove and a semi-expanded groove connected to the end of the semi-circular arc groove, the two semi-circular arc grooves together constitute the first clamping cavity, the two semi-expanded grooves together constitute the first forming cavity, the first clamping block and the second clamping block are provided with a channel connected to the first clamping cavity, and the transfer mechanism includes a clamping jaw that can clamp the pipe in and out of the channel.

[0008] In some embodiments of the present invention, the transfer mechanism includes a mounting frame mounted on the workbench, the mounting frame is provided with a guide slide rail extending in the left and right directions, the guide slide rail is slidably connected to four second linear drives, the output end of each second linear drive is provided with the clamp, a connecting rod is connected between two adjacent second linear drives, and the mounting frame is provided with a linear reciprocating mechanism for driving the four clamps to move synchronously.

[0009] In some embodiments of the present invention, the positioning mechanism includes a first mounting seat, a second mounting seat and a first clamping assembly for clamping the pipe fitting, which are arranged in sequence along the front-to-back direction. The first mounting seat is movably provided with a positioning plate, the second mounting seat is provided with a groove for placing the pipe fitting, and the first clamping assembly is connected to a second linear mechanism that drives it to move along the front-to-back direction, so that the first clamping assembly can adjust the front-to-back position of the pipe fitting relative to the positioning plate.

[0010] In some embodiments of the present invention, the shearing and breaking mechanism includes a second clamping assembly, a shearing assembly, and a third clamping assembly arranged in sequence along the front-to-back direction. The shearing assembly is used to circumferentially cut at least part of the wall of the pipe fitting. The third clamping assembly is connected to a third linear drive mechanism that drives it to move relative to the second clamping assembly, so that the third clamping assembly can apply force to break the pipe fitting cut by the shearing assembly.

[0011] In some embodiments of the present invention, the shearing assembly includes a cutter and a rotating shaft rotatably arranged on the workbench, the rotating shaft penetrates a transport channel with a pipe fitting in the front-to-back direction, the cutter is movably arranged on the rotating shaft through an elastic member, the rotating shaft is provided with a moving member that moves axially along its outer peripheral wall, a wedge-shaped driving mechanism is provided between the moving member and the cutter, and under the movement of the moving member, the wedge-shaped driving mechanism drives the cutter to move back and forth radially along the rotating shaft to adjust the radial distance of the cutter relative to the transport channel.

[0012] In some embodiments of the present invention, the rotating shaft is provided with a receiving groove extending along its radial direction, the moving member is a toggle sleeve mounted on the outer circumference of the rotating shaft, the wedge-shaped driving mechanism is a moving block retractably arranged in the receiving groove, the moving block has an inclined surface facing the toggle sleeve, the elastic member is located between the moving block and the bottom of the receiving groove, the cutter is connected to the moving block, and when the toggle sleeve abuts against the inclined surface, the toggle sleeve can push the moving block to move toward the side of the bottom of the receiving groove.

[0013] In some embodiments of the present invention, the workbench is provided with a fixed seat, the fixed seat is provided with a guide rod extending in the front-to-back direction, the guide rod is movably provided with a pushing member, the pushing member is connected to a third linear drive for driving it to move to abut against the toggle sleeve, and one end of the guide rod is provided with a blocking plate for limiting the moving stroke of the pushing member.

[0014] In some embodiments of the present invention, the blocking plate is threadedly connected to a bolt member for adjusting the movement stroke of the pushing member.

[0015] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0017] Figure 1 It is a structural schematic diagram of an embodiment of the integrated machine for cutting pipe ends of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of the structures of the shearing and breaking mechanism, the pressing mechanism and the positioning mechanism in the embodiment;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of the pressing mechanism;

[0020] Figure 4 for Figure 2 A local enlarged view of point A in FIG;

[0021] Figure 5 for Figure 2 Schematic diagram of the structure of the rotating shaft and the cutter;

[0022] Figure 6 for Figure 5 Internal cross-sectional view of

[0023] Figure 7 for Figure 1 A schematic structural diagram of the transfer mechanism in the embodiment;

[0024] Figure 8 This is a schematic structural diagram of a pipe fitting processed by the pipe end cutting integrated machine of the present invention.

[0025] In the figure: workbench 100, clamping portion 101, annular portion 102, straightening mechanism 200, first conveying mechanism 300, shearing and breaking mechanism 400, second clamping assembly 410, first pressing seat 411, second pressing seat 412, shearing assembly 420, cutter 421, rotating shaft 422, transportation channel 423, elastic member 424, moving member 425, accommodating groove 426, moving block 427, third clamping assembly 430, third pressing seat 431, fourth pressing seat 432, fixed seat 440, pushing member 441, third linear drive 442, blocking plate 443, bolt member 444, second conveying mechanism 500, pressing mechanism 600, first clamping die assembly 610 , first clamping cavity 601, first molding cavity 602, first clamping block 611, second clamping block 612, first linear drive 613, channel 605, second clamping mold assembly 620, second clamping cavity 603, second molding cavity 604, pushing assembly 630, pushing part 631, driving cylinder 632, positioning mechanism 700, first mounting seat 710, positioning plate 711, second mounting seat 720, first clamping assembly 730, transfer mechanism 800, mounting frame 801, clamping claw 810, guide slide rail 820, second linear drive 830, connecting rod 840, driving screw 850, pushing seat 860, rotating motor 870, belt conveyor mechanism 900, collection box 910. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0030] See also Figures 1 to 3A pipe end cutting machine includes: a workbench 100; a straightening mechanism 200, which is provided on the workbench 100 and is used to straighten the pipe fittings; a first conveying mechanism 300, which is provided on one side of the workbench 100 and is used to convey the pipe fittings to the straightening mechanism 200; a shearing and breaking mechanism 400, which is provided on the workbench 100 and is used to cut at least part of the pipe wall of the pipe fittings and break the pipe fittings; a second conveying mechanism 500, which is provided on the workbench 100 and is used to convey the corrected pipe fittings to the shearing and breaking mechanism 400. Mechanism 400; two pressing mechanisms 600, arranged on the workbench 100, for forming a clamping portion 101 and a ring portion 102 on both ends of the sheared pipe; an adjusting mechanism 700, arranged between the two pressing mechanisms 600, for adjusting the front and rear positions of the pipe that has been formed for the first time; a transfer mechanism 800, arranged on the workbench 100, for transferring the sheared pipe between the shearing and breaking mechanism 400, the two pressing mechanisms 600 and the adjusting mechanism 700.

[0031] When the above-structured pipe end cutting integrated machine is in use, the pipe fittings are first transported to the straightening mechanism 200 for straightening through the first conveying mechanism 300, and then transported to the shearing and breaking mechanism 400 through the second conveying mechanism 500, so that the pipe fittings are cut to a certain length and broken. Subsequently, the transfer mechanism 800 conveys the sheared pipe fittings to the two pressing mechanisms 600 and the positioning mechanism 700, so that the pipe fittings can complete the forming of the clamping part 101 and the annular part 102 at both ends under the action of the two pressing mechanisms 600, thereby integrating the straightening, shearing, both ends of the pipe and the forming of the pipe body into one, reducing manual auxiliary operations, improving production efficiency, and having a high degree of automation.

[0032] See also Figure 1 Specifically, the first conveying mechanism 300 includes a turntable for winding pipe fittings. The straightening mechanism 200 includes a plurality of straightening wheels arranged in the front-to-back direction, and the straightening wheels in a group of two can define the conveying gap of the pipe fittings, so that the pipe fittings are straightened by rolling the two straightening wheels. The second conveying mechanism 500 includes a clamping cylinder for clamping the pipe fittings. The clamping cylinder is driven by a screw motor so that the clamping cylinder can move back and forth linearly relative to the workbench 100, so that the pipe fittings wound on the turntable can be continuously transported to the shearing and breaking mechanism 400 under the back-and-forth conveyance of the clamping cylinder, thereby completing the straightening and preliminary transportation process of the pipe fittings.

[0033] See also Figures 1 to 4In some embodiments of the present invention, the pressing mechanism 600 includes a first clamping die assembly 610, a second clamping die assembly 620 and a pushing die assembly 630. The first clamping die assembly 610 has a first clamping cavity 601 for clamping the pipe fitting and a first molding cavity 602 connected to one end of the first clamping cavity 601. The second clamping die assembly 620 has a second clamping cavity 603 for clamping the pipe fitting and a second molding cavity 604 connected to one end of the second clamping cavity 603. The first clamping die assembly 610 and the second clamping die assembly 620 can move relative to each other. The pushing die assembly 630 is provided with a pushing portion 631 nested with the port of the pipe fitting. After the pipe fitting is embedded in the pushing portion 631, the pushing portion 631 is used to push the second clamping die assembly 620 toward one side of the first clamping die assembly 610, so that the pipe fitting is pressed in the first molding cavity 602 to form the annular portion 102, and is pressed in the second molding cavity 604 to form the clamping portion 101. Specifically, the transfer mechanism 800 places the sheared pipe between the first and second clamping assemblies 610, 620, securing the pipe at both ends under the clamping force of the first and second clamping assemblies 610, 620. Subsequently, the pressing portion 631 engages with the pipe opening, pushing the second clamping assembly 620 toward the first clamping assembly 610. During this process, as the pressing portion 631 moves, the pipe is subjected to forces on both sides of the first forming cavity 602, forming an annular portion 102 on the pipe body. Furthermore, the pipe is subjected to forces on both sides of the second forming cavity 604, forming a clamping portion 101 at the end. This allows the clamping portion 101 and the annular portion 102 to be processed simultaneously, resulting in a simpler structure and higher production efficiency than the separate processing of a single bulge. It is understood that the two pressing mechanisms 600 have the same structure but are installed in opposite directions to adapt to the processing direction of the pipe and reduce the cost of developing new processing and forming equipment. It is understood that the pushing assembly 630 also includes a driving cylinder 632 connected to the pushing portion 631. Of course, the driving cylinder 632 can also be replaced with a hydraulic cylinder to ensure that the pushing portion 631 can have a large driving force to push the second clamping die assembly 620. In addition, to adapt to the frustum of the clamping portion 101, the pushing portion 631 can be formed with a groove that matches the shape of the clamping portion 101. When the pipe is subjected to force, the end of the pipe forms a closed structure, which facilitates the mutual connection between the processed pipe and other components.

[0034] See also Figure 3 、 Figure 4 as well as Figure 8In some embodiments of the present invention, the first clamping mold assembly 610 includes a first clamping block 611 and a second clamping block 612 arranged opposite to each other and a first linear drive 613 that drives the two to move closer to or away from each other. The first clamping block 611 and the second clamping block 612 both have a semi-circular arc groove and a semi-expanded groove connected to the end of the semi-circular arc groove. The two semi-circular arc grooves together constitute the first clamping cavity 601, and the two semi-expanded grooves together constitute the first forming cavity 602. The first clamping block 611 and the second clamping block 612 are provided with a channel 605 connecting the first clamping cavity 601, and the transfer mechanism 800 includes a clamping jaw 810 that can clamp the pipe in and out of the channel 605. Specifically, the first linear actuator 613 is a pneumatic cylinder, the telescopic end of which is connected to the second clamping block 612. The first clamping block 611 is fixed to the workbench 100. When the clamping jaws 810 place the pipe in one of the semicircular slots, the pneumatic cylinder drives the second clamping block 612 to move into contact with the first clamping block 611, thereby allowing the first and second clamping blocks 611, 612 to jointly apply force to clamp the pipe. Finally, the clamping jaws 810 release and withdraw from the first clamping assembly 610 through the channel 605. Of course, in some embodiments, both the first and second clamping blocks 611, 612 are connected to pneumatic cylinders, and the two cylinders drive them closer or farther, thereby adjusting the clamping position of the pipe to facilitate contact with the clamping jaws 810 of the transfer mechanism 800. In addition, the semicircular slots have the same diameter as the pipe, which increases the contact area between the first clamping assembly 610 and the pipe, thereby ensuring that the first clamping assembly 610 applies force evenly to the pipe.

[0035] See also Figure 1 and Figure 8In some embodiments of the present invention, the transfer mechanism 800 includes a mounting frame 801 mounted on the workbench 100. The mounting frame 801 is provided with a guide rail 820 extending in the left-right direction. The guide rail 820 is slidably connected to four second linear actuators 830. The output end of each second linear actuator 830 is equipped with a clamping jaw 810. A connecting rod 840 is connected between two adjacent second linear actuators 830. The mounting frame 801 is provided with a linear reciprocating mechanism for driving the four clamping jaws 810 to move synchronously. Specifically, the shearing mechanism, the two pressing mechanisms 600, and the positioning mechanism 700 can be spaced apart in the left-right direction, and the four clamping jaws 810 respectively cooperate with the shearing and breaking mechanism 400, the two pressing mechanisms 600, and the positioning mechanism 700, thereby completing the function of transferring pipe fittings between two adjacent mechanisms. The clamping jaws 810 are commonly used finger cylinders for clamping or releasing pipe fittings, while the second linear actuator 830 is a cylinder. The telescopic end of the cylinder is connected to the finger cylinder, thereby driving the finger cylinder to reciprocate in the vertical direction, thereby driving the finger cylinder to lift the pipe fitting or lower it to the corresponding processing position. It can be understood that the linear reciprocating mechanism includes a drive screw 850 whose length is parallel to the guide rail 820. The drive screw 850 is connected to a rotary motor 870 that drives it to rotate. A push seat 860 is movably provided on the drive screw 850. The push seat 860 is connected to one of the second linear actuators 830. Therefore, under the drive of the rotary motor 870, the push seat 860 can drive the four clamping jaws 810 to move synchronously in the left and right directions, thereby enabling the clamping jaws 810 to transfer the pipe fitting to the next process after each processing step is completed. This reduces the number of drive components that control the movement of the clamping jaws 810 and saves costs. In order to facilitate the unloading of the pipe fittings that have been formed for the second time, a belt conveyor mechanism is provided on the side of the forming mechanism close to the second forming, and a collection box 910 is placed at the conveying end of the belt conveyor mechanism, so that the clamping jaws 810 can place the pipe fittings that have been formed for the second time on the belt conveyor mechanism, thereby facilitating the collection of the pipe fittings.

[0036] See also Figure 1 and Figure 3In some embodiments of the present invention, the positioning mechanism 700 includes a first mounting seat 710, a second mounting seat 720, and a first clamping assembly 730 for clamping the pipe. The first mounting seat 710 is movably provided with a positioning plate 711, and the second mounting seat 720 is provided with a groove for receiving the pipe. The first clamping assembly 730 is connected to a second linear mechanism that drives it to move in the forward and backward direction, so that the first clamping assembly 730 can adjust the forward and backward position of the pipe relative to the positioning plate 711. Specifically, the first clamping assembly 730 is a finger cylinder, and the second linear mechanism is configured as a motor. The motor output shaft is connected to a screw, which is threadedly connected to the finger cylinder via a sliding seat. The motor can be a reduction motor, servo motor, etc. The motor and screw can be used in combination to precisely control the distance the pipe moves, thereby adjusting the forward and backward position of the pipe and preventing the pipe from being too long and affecting the processing of the next step. In some embodiments, the second linear mechanism can also be a motor-driven rack and pinion, which will not be described in detail here.

[0037] See also Figure 3 and Figure 5In some embodiments of the present invention, the shearing and breaking mechanism 400 includes a second clamping assembly 410, a shearing assembly 420, and a third clamping assembly 430, arranged in sequence along the front-to-back direction. The shearing assembly 420 is used to circumferentially cut at least a portion of the wall of a tubular component. The third clamping assembly 430 is connected to a third linear drive mechanism that drives it to move relative to the second clamping assembly 410, enabling the third clamping assembly 430 to apply force to break the tubular component being cut by the shearing assembly 420. Specifically, the second clamping assembly 410 and the third clamping assembly 430 clamp the ends of the tubular component, allowing the shearing assembly 420 to circumferentially cut a portion of the tubular component's wall without directly severing the tubular component. The third linear drive mechanism then drives the third clamping assembly 430 to move, thereby breaking the tubular component. When the shearing assembly 420 applies radial force to the tubular component, breaking the tubular component by breaking it instead of directly severing it helps reduce the risk of diameter reduction, thereby ensuring that the sheared tubular components have a consistent diameter. It is understandable that the third linear drive mechanism can be driven by a cylinder or a hydraulic cylinder. Among them, the second clamping assembly 410 includes a first pressing seat 411 and a second pressing seat 412 relatively distributed along the vertical direction. The first pressing seat 411 is fixed to the workbench 100, and the second pressing seat 412 is connected to a cylinder that drives it to move close to the first pressing seat 411. The first pressing seat 411 and the second pressing seat 412 jointly press one end of the pipe. Similarly, the third clamping assembly 430 includes a third pressing seat 431 and a fourth pressing seat 432 relatively distributed along the vertical direction. The third pressing seat 431 is connected to a cylinder that drives it to move in the front-to-back direction relative to the workbench 100, and the fourth pressing seat 432 is connected to a cylinder that drives it to move close to the third pressing seat 431. The third pressing seat 431 and the fourth pressing seat 432 jointly press the other end of the pipe, and the movement of the third pressing seat 431 forms a pulling force that breaks the pipe.

[0038] See also Figure 3 、 Figures 5 to 7In some embodiments of the present invention, the shearing assembly 420 includes a cutter 421 and a rotating shaft 422 rotatably mounted on the workbench 100. The rotating shaft 422 extends forward and backward through a transport channel 423 through which the pipe is passed. The cutter 421 is movably mounted on the rotating shaft 422 via an elastic member 424. The rotating shaft 422 is provided with a movable member 425 that moves axially along its outer circumference. A wedge-shaped drive mechanism is disposed between the movable member 425 and the cutter 421. The wedge-shaped drive mechanism drives the cutter 421 to reciprocate radially along the rotating shaft 422 under the movement of the movable member 425, thereby adjusting the radial distance of the cutter 421 relative to the transport channel 423. Specifically, after the second conveying mechanism 500 pushes the pipe into the transport channel 423, the rotating shaft 422 is driven by a motor to rotate, causing the cutter 421 to perform an annular cut on the pipe along with the rotating shaft 422. The movable member 425 is linked to the wedge-shaped drive mechanism, allowing the cutter 421 to gradually cut deeper into the pipe wall and compress the elastic member 424. Subsequently, when the cutter 421 cuts to a certain depth, the movable member 425 moves in the opposite direction, causing the elastic member 424 to recover its deformation, thereby driving the wedge-shaped drive mechanism to reset, thereby resetting the cutter 421 away from the pipe, ultimately completing the cutting of the pipe and facilitating subsequent breaking of the pipe. In certain embodiments, the shearing assembly 420 further includes two rollers distributed circumferentially along the rotating shaft 422. The two rollers and the cutter 421 together form a three-point force application on the pipe, thereby preventing the cutter 421 from cutting the pipe and causing axial deformation of the pipe.

[0039] See also Figure 3 、 Figures 5 to 7 In some embodiments of the present invention, the rotating shaft 422 is provided with a receiving groove 426 extending along its radial direction, the moving member 425 is a toggle sleeve arranged on the outer periphery of the rotating shaft 422, and the wedge-shaped driving mechanism is a moving block 427 that is retractably arranged in the receiving groove 426. The moving block 427 has an inclined surface facing the toggle sleeve, and the elastic member 424 is located between the moving block 427 and the bottom of the receiving groove 426. The cutter 421 is connected to the moving block 427. When the toggle sleeve abuts against the inclined surface, the toggle sleeve can push the moving block 427 to move toward the bottom of the receiving groove 426. Specifically, when the toggle sleeve moves to abut the inclined surface of the movable block 427, the decomposition force of the toggle sleeve acting on the inclined surface drives the movable block 427 toward the bottom of the receiving groove 426, thereby driving the cutter 421 to move radially along the pipe and causing the movable block 427 to compress the elastic member 424. The toggle sleeve then moves in the opposite direction, and the elastic member 424 pushes the movable block 427 to reset, thereby driving the cutter 421 to reset and withdraw from the pipe. It is understood that the port of the toggle sleeve near the cutter 421 can be provided with a conical surface that cooperates with the inclined surface, thereby increasing the contact area and evenly distributing the force, thereby improving the stability of the movable block 427.

[0040] See also Figure 3 、 Figures 5 to 7 In some embodiments of the present invention, the workbench 100 is provided with a fixed base 440, which is equipped with a guide rod extending in the front-to-back direction. The guide rod is movably provided with a pusher 441. The pusher 441 is connected to a third linear actuator 442 for driving it to abut against the toggle sleeve. A blocking plate 443 is provided at one end of the guide rod to limit the travel of the pusher 441. Specifically, a rotation shaft 422 is rotatably mounted on the fixed base 440, the guide rod is positioned above the rotation shaft 422, and the pusher 441 has a flat portion facing the toggle sleeve. Driven by the third linear actuator 442, the flat portion of the pusher 441 gradually moves until it abuts against the toggle sleeve, enabling the toggle sleeve to move toward the cutter 421. When the third linear actuator 442 drives the pusher 441 away from the toggle sleeve, the elastic member 424 resets the toggle sleeve and causes it to move in the opposite direction, resulting in a compact structure and smooth movement. The blocking plate 443 can limit the movement of the pusher 441, thereby limiting the movement of the toggle sleeve and preventing the toggle sleeve from separating from the rotating shaft 422. It is understandable that the third linear actuator 442 can be a pneumatic cylinder or a hydraulic cylinder according to actual conditions.

[0041] See also Figure 5 In some embodiments of the present invention, a bolt 444 is threadedly connected to the blocking plate 443 for adjusting the travel of the pusher 441. Specifically, by adjusting the number of turns of the bolt 444, the distance between the pusher 441 and the bolt 444 is adjusted, thereby limiting the travel of the toggle sleeve pushing the moving block 427, allowing the radial travel of the cutter 421 along the pipe to be adjusted according to actual conditions.

[0042] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A pipe end cutting machine, characterized in that: include: Workbench (100); A straightening mechanism (200), provided on the workbench (100), for straightening the pipe; A first conveying mechanism (300) is provided on one side of the workbench (100) and is used to convey the pipe to the straightening mechanism (200); A shearing and breaking mechanism (400), provided on the workbench (100), is used to cut at least a portion of the wall of the pipe and break the pipe; A second conveying mechanism (500), provided on the workbench (100), is used to convey the calibrated pipe to the shearing and breaking mechanism (400); Two profiling mechanisms (600) are provided on the workbench (100) and are used to form a clamping portion (101) and an annular portion (102) on both ends of the sheared pipe. The two profiling mechanisms (600) have the same structure and are spaced apart in the left-right direction. A position adjustment mechanism (700) is provided between the two pressing mechanisms (600) and is used to adjust the front and rear positions of the pipe that has been formed for the first time; A transfer mechanism (800) is provided on the workbench (100) and is used to transfer the sheared pipes between the shearing and breaking mechanism (400), the two pressing mechanisms (600) and the positioning mechanism (700); The pressing mechanism (600) includes a first clamping die assembly (610), a second clamping die assembly (620) and a pushing die assembly (630), wherein the first clamping die assembly (610) has a first clamping cavity (601) for clamping a pipe fitting and a first forming cavity (602) connected to one end of the first clamping cavity (601), and the second clamping die assembly (620) has a second clamping cavity (603) for clamping a pipe fitting and a second forming cavity (604) connected to one end of the second clamping cavity (603), and the first clamping die assembly (610) and the second clamping die assembly (620) are capable of relative movement. The pushing assembly (630) is provided with a pushing portion (631) nested with the port of the pipe fitting, and the pushing portion (631) is movably arranged on the workbench (100). After the pipe fitting is embedded in the pushing portion (631), the pushing portion (631) is used to push the second clamping mold assembly (620) toward one side of the first clamping mold assembly (610), so that the pipe fitting is pressed in the first forming cavity (602) to form the annular portion (102), and is pressed in the second forming cavity (604) to form the clamping portion (101); the first clamping mold assembly (610) includes a first clamping block ( 611) and a second clamping block (612) and a first linear drive (613) for driving the two to move closer to or away from each other, the first clamping block (611) and the second clamping block (612) both have a semi-circular arc groove and a semi-expanded groove connected to the end of the semi-circular arc groove, the two semi-circular arc grooves together constitute the first clamping cavity (601), the two semi-expanded grooves together constitute the first forming cavity (602), the first clamping block (611) and the second clamping block (612) are provided with a channel (605) communicating with the first clamping cavity (601), the transfer mechanism (800) includes a The clamping claw (810) is located in the channel (605); the positioning mechanism (700) includes a first mounting seat (710), a second mounting seat (720) and a first clamping assembly (730) for clamping the pipe fitting, which are arranged in sequence along the front-to-back direction, wherein the first mounting seat (710) is movably provided with a positioning plate (711), the second mounting seat (720) is provided with a groove for placing the pipe fitting, and the first clamping assembly (730) is connected to a second linear mechanism that drives it to move along the front-to-back direction, so that the first clamping assembly (730) can adjust the front-to-back position of the pipe fitting relative to the positioning plate (711).

2. The integrated tube end cutting machine according to claim 1, characterized in that: The transfer mechanism (800) includes a mounting frame (801) mounted on the workbench (100), the mounting frame (801) is provided with a guide rail (820) extending in the left and right directions, the guide rail (820) is slidably connected to four second linear drivers (830), the output end of each second linear driver (830) is provided with a clamping claw (810), and a connecting rod (840) is connected between two adjacent second linear drivers (830). The mounting frame (801) is provided with a linear reciprocating mechanism for driving the four clamping claws (810) to move synchronously; the four clamping claws (810) respectively cooperate with the shearing and breaking mechanism (400), the two pressing mechanisms (600) and the positioning mechanism (700), thereby completing the function of transferring pipe fittings between two adjacent mechanisms.

3. The integrated tube end cutting machine according to claim 1, characterized in that: The shearing and breaking mechanism (400) comprises a second clamping assembly (410), a shearing assembly (420), and a third clamping assembly (430) arranged in sequence along the front-to-back direction. The shearing assembly (420) is used to circumferentially cut at least a portion of the wall of the pipe. The third clamping assembly (430) is connected to a third linear drive mechanism that drives it to move relative to the second clamping assembly (410), so that the third clamping assembly (430) can apply force to break the pipe cut by the shearing assembly (420).

4. The integrated tube end cutting machine according to claim 3, characterized in that: The shearing assembly (420) includes a cutter (421) and a rotating shaft (422) rotatably arranged on the workbench (100), the rotating shaft (422) penetrates a transport channel (423) provided with a pipe fitting in the front-to-back direction, the cutter (421) is movably arranged on the rotating shaft (422) via an elastic member (424), the rotating shaft (422) is provided with a moving member (425) that moves axially along its outer peripheral wall, a wedge-shaped driving mechanism is provided between the moving member (425) and the cutter (421), and under the movement of the moving member (425), the wedge-shaped driving mechanism drives the cutter (421) to move back and forth along the radial direction of the rotating shaft (422) to adjust the radial distance of the cutter (421) relative to the transport channel (423).

5. The integrated pipe end cutting machine according to claim 4, characterized in that: The rotating shaft (422) is provided with a receiving groove (426) extending along its radial direction, the moving member (425) is a toggle sleeve sleeved on the outer periphery of the rotating shaft (422), the wedge-shaped driving mechanism is a moving block (427) telescopically arranged in the receiving groove (426), the moving block (427) has an inclined surface facing the toggle sleeve, the elastic member (424) is located between the moving block (427) and the bottom of the receiving groove (426), the cutter (421) is connected to the moving block (427), and when the toggle sleeve abuts against the inclined surface, the toggle sleeve can push the moving block (427) to move toward the bottom of the receiving groove (426).

6. The integrated tube end cutting machine according to claim 5, characterized in that: The workbench (100) is provided with a fixed seat (440), and the fixed seat (440) is provided with a guide rod extending in the front-back direction. The guide rod is movably provided with a pusher (441), and the pusher (441) is connected to a third linear driver (442) for driving it to move to abut against the toggle sleeve. One end of the guide rod is provided with a blocking plate (443) for limiting the moving stroke of the pusher (441).

7. The integrated tube end cutting machine according to claim 6, characterized in that: The blocking plate (443) is threadedly connected to a bolt member (444) for adjusting the movement stroke of the pushing member (441).

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