A variant punch for expanding the end of a pipe

Abstract

The present invention discloses a variant punch for expanding the end of a pipe, which belongs to the technical field of pipe processing and comprises: a movable seat, wherein the end of the movable seat is provided with an expanding head for expanding the end of the pipe, and the variant punch for expanding the end of the pipe is provided with a driving gear which can be rotated by the operation of a driving member, and when the driving gear rotates, it can drive a first bidirectional threaded rod and a second bidirectional threaded rod to rotate through the cooperation of a driven gear, and when the first bidirectional threaded rod and the second bidirectional threaded rod rotate, they can respectively drive a vertical internal threaded slider and a horizontal internal threaded slider to move vertically and horizontally, and when the vertical internal threaded slider and the horizontal internal threaded slider move vertically and horizontally, they can drive the movable seat and the expanding head to move, and when the expanding head moves, the end of the pipe can be expanded, the operation is convenient and stable, and the end of the pipe can be expanded into a required shape according to the needs of the user.

Description

Technical Field

[0001] The invention relates to the technical field of pipe processing, in particular to a variant punch used for expanding the end of a pipe. Background Art

[0002] In the field of metal pipe processing, pipe end flaring is a common forming process, widely used in industries such as automobile manufacturing, aerospace, energy pipelines, and home appliances. The flaring process applies radial force to the end of the pipe to cause plastic deformation of the pipe end, forming a bell mouth or a special-shaped port at a specific angle to meet functional requirements such as connection, sealing, or fluid guidance. Traditional flaring processes mostly use punches with fixed geometric shapes (such as conical, spherical, or stepped punches). However, with the diversification and sophistication of industrial application scenarios, traditional punch structures have gradually exposed the following technical bottlenecks: limited adaptability, insufficient forming accuracy, and difficulty in meeting flexible production requirements. Therefore, a variant punch is needed.

[0003] Authorization publication number CN114985612B discloses a variant punch for flaring pipe ends, belonging to the field of aluminum alloy sheet metal processing for aircraft aircraft. The punch includes two types: a single-row transmission rod variant flaring punch and a double-row transmission rod variant flaring punch. The invention utilizes a transmission rod with left-hand and right-hand threads and a gear-engaged transmission mechanism to adjust the relative position between the punch lobes to form punches with different external shapes. These punches can be used to flare pipe ends with various cross-sectional shapes, including circular, rounded rectangular, and "runway" cross-sections. This reduces the number of punches required, thereby reducing manufacturing costs and avoiding the need for frequent replacement of punches of different specifications, thereby improving work efficiency. Furthermore, the invention does not require a complex adjustment mechanism, resulting in a simple structure, easy implementation, and convenient use. However, the invention requires the displacement and rotation of the gears to move the flaring punch when flaring the pipe end, which is complex to operate and has poor stability. Furthermore, when flaring a circular shape, the punch moves at a 45° angle, resulting in poor circular flaring regularity. Summary of the Invention

[0004] The purpose of the present invention is to provide a variant punch for expanding the end of a pipe. The displacement of the movable seat and the expanding head can be achieved through the cooperation of the vertical internal thread slider and the horizontal internal thread slider. The operation is convenient and stable. The pipe end can be expanded into the required shape according to the needs of the user. The circular expansion of the steel pipe end can also be regularized by rotating the expanding head through the cooperation of parts.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a variant punch for expanding the end of a pipe, comprising: a movable seat, an expanding head for expanding the end of the pipe being provided at the end of the movable seat, a driving mechanism for driving the expanding head to move vertically and horizontally mounted on the movable seat, the movable seat and the expanding head being connected via a rotating mechanism;

[0006] The driving mechanism includes a vertical moving component and a horizontal moving component for vertical and horizontal movement of the expansion head, and a driving component for the vertical moving component and the horizontal moving component to work;

[0007] The movable base is respectively provided with a vertical movable assembly and a horizontal movable assembly, and the vertical movable assembly and the horizontal movable assembly are both provided with a driving assembly;

[0008] The rotating mechanism includes a rotating assembly for rotating the expansion head, a mounting assembly for mounting the rotating assembly, and a telescopic assembly for lifting and lowering the expansion head;

[0009] The driving assembly is mounted on a mounting assembly, the mounting assembly is mounted on a rotating assembly, and the rotating assembly is mounted on a telescopic assembly.

[0010] Preferably, the vertical movement assembly includes a vertical internal thread slider and a first limit block for vertical movement of the moving seat, a vertical movement groove and a first limit groove for mounting the vertical internal thread slider and the first limit block, and a first bidirectional threaded rod for movement of the vertical internal thread slider and the first limit block;

[0011] A vertical moving groove is vertically opened on the top of the moving seat, and two first limiting grooves are horizontally opened on the front and rear inner walls of the vertical moving groove;

[0012] A vertical internal thread slider is movably connected inside the vertical movable groove, and two first limiting blocks are fixedly installed on the surface of the vertical internal thread slider close to the first limiting groove;

[0013] The interior of the vertical internal thread slider is threadedly connected to a first bidirectional threaded rod via a thread groove.

[0014] Preferably, the lateral movement assembly includes a lateral internally threaded slider and a second limit block for vertical movement of the moving seat, a lateral movement groove and a second limit groove for mounting the lateral internally threaded slider and the second limit block, and a second bidirectional threaded rod for movement of the lateral internally threaded slider and the second limit block;

[0015] A transverse moving groove is provided on the side of the moving seat, and two second limiting grooves are vertically provided on the inner wall of the transverse moving groove;

[0016] A transverse internal threaded slider is movably connected inside the transverse moving groove, and two second limiting blocks are fixedly installed on the surface of the transverse internal threaded slider close to the second limiting groove;

[0017] The interior of the transverse internal thread slider is threadedly connected to a second bidirectional threaded rod via a thread groove.

[0018] Preferably, the driving assembly includes a connecting plate for mounting the first bidirectional threaded rod and the second bidirectional threaded rod, and a driven gear for rotating the first bidirectional threaded rod and the second bidirectional threaded rod;

[0019] Connecting plates are installed at both ends of the first bidirectional threaded rod and the second bidirectional threaded rod, and driven gears are fixedly installed at the top of the first bidirectional threaded rod and the right end of the second bidirectional threaded rod.

[0020] Preferably, the driving assembly further comprises a driving gear for rotating the driven gear, and a rotating shaft for mounting the driving gear;

[0021] A rotating shaft is rotatably installed through the center of the connecting plate near the driven gear, and a driving gear that matches the driven gear is fixedly installed at one end of the rotating shaft;

[0022] The other end of the rotating shaft is equipped with a driving member.

[0023] Preferably, the mounting assembly includes a mounting bracket for mounting the rotating assembly, a fixing rod for fixing the mounting bracket, and a groove for mounting the mounting bracket and the fixing rod;

[0024] A fixing rod is fixedly installed on the side of the connecting plate close to the lateral moving assembly, and the other end of the fixing rod is rotatably connected to the end of the rotating shaft;

[0025] A mounting bracket is fixedly mounted at the center of the fixing rod, and a groove which matches the fixing rod and the mounting bracket is provided on the movable seat.

[0026] Preferably, the rotating assembly includes a motor for providing a driving force for the expansion head to rotate, a rotating seat for rotating the telescopic assembly, and a rotating ring for fixing the telescopic assembly;

[0027] A motor is fixedly mounted on the mounting frame, and a rotating seat is fixedly mounted on the output end of the motor;

[0028] A rotating ring is sleeved on the outer surface of the rotating seat.

[0029] Preferably, the rotating assembly further comprises a rotating groove for assembling the rotating ring, a guide groove and a guide block for driving the rotating ring to rotate, and a pushing column for pushing the expansion head to rotate;

[0030] The surface of the rotating seat is symmetrically provided with two rotating grooves that match the rotating ring, and the inner side of each rotating groove is provided with at least two guide grooves in a circular array;

[0031] A guide block that matches the guide groove is fixedly mounted on the inner wall of the rotating ring, and a push column is fixedly mounted on the output end of the telescopic assembly;

[0032] One end of the pushing column is fixedly mounted on the expansion head.

[0033] Preferably, the rotating assembly further comprises a slider and a slide groove for guiding the expansion head, a rotating plate and a rotating groove for limiting the expansion head, and a slide rail and a track groove for limiting the rotating plate;

[0034] A rotation groove is provided at the front end of the expansion head, and a track groove is provided inside the rotation groove;

[0035] A slide rail is slidably connected inside the track groove, and a rotating plate is fixedly installed on the slide rail;

[0036] The rotating plate is provided with a slide groove, and a slider is movably connected inside the slide groove;

[0037] The sliding block is fixedly mounted on the other end of the pushing column.

[0038] Preferably, the telescopic assembly includes a fixed cylinder and an extension rod for driving the expansion head to rotate, a piston and an air inlet hole for sucking external air into the fixed cylinder, a sealing hole and a sealing plug for sealing the sealing hole;

[0039] At least two fixed cylinders are fixedly mounted on the outer surface of the rotating ring close to the guide block in a circular array, and the top ends of the fixed cylinders are movably connected to extension rods;

[0040] A piston is fixedly mounted on the end of the extension rod, and the piston is movably connected to the interior of the fixed cylinder;

[0041] An air inlet hole is formed on the surface of the rotating ring close to the end of the fixed cylinder, and one end of the air inlet hole is formed inside the guide block;

[0042] A sealing hole is formed through the side of the guide block near the air inlet hole, and sealing plugs are fixedly installed on both ends of the inner wall of the guide groove near the sealing hole;

[0043] The length of the sealing plug is greater than the length of the sealing hole.

[0044] Compared with the prior art, the beneficial effects of the present invention are: the variant punch for expanding the end of a pipe;

[0045] 1. A driving gear is provided which can be rotated by the operation of the driving member. When the driving gear rotates, the first bidirectional threaded rod and the second bidirectional threaded rod can be driven to rotate through the cooperation of the driven gear. When the first bidirectional threaded rod and the second bidirectional threaded rod rotate, they can respectively drive the vertical internal threaded slider and the horizontal internal threaded slider to move vertically and horizontally. When the vertical internal threaded slider and the horizontal internal threaded slider move vertically and horizontally, they can drive the moving seat and the expansion head to move. When the expansion head moves, the end of the pipe can be expanded. The operation is convenient and stable, and the end of the pipe can be expanded into a desired shape according to the needs of the user.

[0046] 2. When a motor is provided, it can drive the telescopic assembly to rotate through the cooperation of the rotating seat, the rotating ring and other parts. When the telescopic assembly rotates, it can drive the push column to rotate. When the push column rotates, it can drive the expansion head to rotate. When the expansion head rotates, the circular expansion of the end of the steel pipe can be regularized, making it easier for the end of the steel pipe to be expanded into a circle and more regular.

[0047] 3. When a circular expansion is performed on the end of a steel pipe, a flaring mouth is provided. The flaring mouth can pull the extension rod through the cooperation of the push column. When the extension rod is pulled, the external air can be sucked into the interior of the fixed cylinder through the cooperation of the piston. After the air enters the interior of the fixed cylinder, the sealing plug can be inserted into the sealing hole through the rotation of the rotating seat, the rotating groove and the guide groove to seal the air inside the fixed cylinder. When the sealing hole is sealed, the flaring mouth can be stably supported by the fixed cylinder and the extension rod, which makes it more stable when the flaring mouth performs regular circular expansion on the end of the steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is a schematic diagram of a three-dimensional perspective structure of the present invention;

[0049] Figure 2 This is a schematic diagram of the second stereoscopic perspective structure of the present invention;

[0050] Figure 3 It is a schematic diagram of a cross-sectional structure from a three-dimensional partial perspective of the present invention;

[0051] Figure 4 This is a schematic diagram of the second cross-sectional structure of the present invention from a three-dimensional local perspective;

[0052] Figure 5 It is a schematic diagram of the three-dimensional local regular structure of the present invention;

[0053] Figure 6 This is a front view schematic diagram of the regular structure of the present invention;

[0054] Figure 7It is a schematic diagram of the three-dimensional cross-sectional structure of the telescopic assembly of the present invention;

[0055] Figure 8 This invention Figure 7 Schematic diagram of the enlarged structure of part A.

[0056] In the figure: 100, mobile seat;

[0057] 200. Expand your speech;

[0058] 300, driving mechanism;

[0059] 310, vertical moving assembly; 311, vertical moving slot; 312, first limiting slot; 313, vertical internal threaded slider; 314, first limiting block; 315, first bidirectional threaded rod;

[0060] 320, lateral movement assembly; 321, lateral movement slot; 322, second limiting slot; 323, lateral internal thread slider; 324, second limiting block; 325, second bidirectional threaded rod;

[0061] 330, driving assembly; 331, connecting plate; 332, driven gear; 333, rotating shaft; 334, driving gear;

[0062] 400, rotating mechanism;

[0063] 410, mounting assembly; 411, fixing rod; 412, groove; 413, mounting bracket;

[0064] 420, rotating assembly; 421, motor; 422, rotating seat; 423, rotating groove; 424, guide groove; 425, rotating ring; 426, guide block; 427, pushing post; 428, slider; 429, slide groove; 4210, rotating plate; 4211, slide rail; 4212, track groove; 4213, rotating groove;

[0065] 430, telescopic assembly; 431, fixed cylinder; 432, piston; 433, extension rod; 434, air inlet hole; 435, sealing hole; 436, sealing plug. DETAILED DESCRIPTION

[0066] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0067] It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate for the embodiments of the present application described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or vehicle that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or vehicles.

[0068] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0069] See also Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The present invention provides an embodiment: a variant punch for expanding the end of a pipe, comprising: a movable base 100, an expanding head 200 for expanding the end of the pipe is provided at the end of the movable base 100, a driving mechanism 300 for driving the expanding head 200 to move vertically and horizontally is installed on the movable base 100, and the movable base 100 and the expanding head 200 are connected by a rotating mechanism 400;

[0070] It should be understood that when the driving mechanism 300 is working, it can drive the four movable seats 100 to move toward or opposite each other in groups of two. When the four movable seats 100 move, they can drive the corresponding expansion mouthpieces 200 to move. When the expansion mouthpiece 200 moves, the end of the pipe can be expanded. When the pipe is expanded in a circular manner, after the expansion mouthpiece 200 moves to the specified position, the rotating mechanism 400 can drive the expansion mouthpiece 200 to rotate through components. When the expansion mouthpiece 200 rotates, the expansion shape of the pipe end can be more regular.

[0071] like Figure 1 、 Figure 2 、 Figure 4 and Figure 5As shown, the driving mechanism 300 includes a vertical moving assembly 310 and a horizontal moving assembly 320 for vertically and horizontally moving the expansion head 200, and a driving assembly 330 for the vertical moving assembly 310 and the horizontal moving assembly 320 to work. The vertical moving assembly 310 and the horizontal moving assembly 320 are respectively installed on the moving base 100, and the driving assembly 330 is installed on both the vertical moving assembly 310 and the horizontal moving assembly 320.

[0072] It can be imagined that when the driving component 330 is working, it can drive the vertical moving component 310 and the horizontal moving component 320 to work. When the vertical moving component 310 is working, it can drive the moving seat 100 and the expansion mouthpiece 200 in groups of two to move vertically. When the horizontal moving component 320 is working, it can drive the moving seat 100 and the expansion mouthpiece 200 in groups of two to move horizontally. When the expansion mouthpiece 200 moves vertically and horizontally, the end of the pipe can be expanded, and the expansion mouthpiece 200 can expand the end of the pipe into a corresponding shape through the cooperation of the vertical moving component 310 and the horizontal moving component 320.

[0073] like Figure 1-Figure 5 、 Figure 7 As shown, the rotating mechanism 400 includes a rotating assembly 420 for rotating the expansion head 200, a mounting assembly 410 for mounting the rotating assembly 420, and a telescopic assembly 430 for lifting and lowering the expansion head 200. The mounting assembly 410 is mounted on the driving assembly 330, the rotating assembly 420 is mounted on the mounting assembly 410, and the telescopic assembly 430 is mounted on the rotating assembly 420.

[0074] It is worth noting that the rotating assembly 420 is installed at a position centered between the four movable seats 100 and the expansion mouth 200 through the installation assembly 410, so that the rotating assembly 420 can always work at a centered position when the four movable seats 100 and the expansion mouth 200 move, and the expansion mouth 200 can be connected to the rotating assembly 420 through the operation of the telescopic assembly 430 when moving. When the expansion mouth 200 is at a specified position, the rotating assembly 420 can drive the expansion mouth 200 to rotate, and when the expansion mouth 200 rotates, the center expansion of the pipe end can be regularized.

[0075] like Figure 1-Figure 5As shown, the vertical movement assembly 310 includes a vertical internal threaded slider 313 and a first limit block 314 for vertical movement of the moving seat 100, a vertical movement groove 311 and a first limit groove 312 for installing the vertical internal threaded slider 313 and the first limit block 314, and a first bidirectional threaded rod 315 for moving the vertical internal threaded slider 313 and the first limit block 314. A vertical movement groove 311 is vertically opened on the top of the moving seat 100, and two first limit grooves 312 are horizontally opened on the front and back inner walls of the vertical movement groove 311. The vertical internal threaded slider 313 is movably connected inside the vertical movement groove 311. Two first limit blocks 314 are fixedly installed on the surface of the vertical internal threaded slider 313 near the first limit groove 312. The interior of the vertical internal threaded slider 313 is threadedly connected to the first bidirectional threaded rod 315 through a thread groove.

[0076] It should be understood that when the first bidirectional threaded rod 315 rotates, it can drive the two vertical internal threaded sliders 313 on the surface to move vertically toward or oppositely. When the vertical internal threaded slider 313 moves vertically, it can drive the first limit block 314 on the surface to move vertically. When the first limit block 314 moves vertically, it can drive the two moving seats 100 to move vertically through the cooperation of the first limit groove 312. When the moving seat 100 moves vertically, it can drive the second limit groove 322 and the second limit block 324 to slide, and at the same time drive the horizontal moving groove 321 and the horizontal internal threaded slider 323 to slide.

[0077] like Figure 1-Figure 5 As shown, the lateral movement assembly 320 includes a lateral internally threaded slider 323 and a second limiting block 324 for vertical movement of the moving seat 100, as well as a lateral movement groove 321 and a second limiting groove 322 for installing the lateral internally threaded slider 323 and the second limiting block 324, and a second bidirectional threaded rod 325 for moving the lateral internally threaded slider 323 and the second limiting block 324. A lateral movement groove 321 is laterally opened on the side of the moving seat 100, and two second limiting grooves 322 are vertically opened on the inner wall of the lateral movement groove 321. The lateral internally threaded slider 323 is movably connected inside the lateral movement groove 321. Two second limiting blocks 324 are fixedly installed on the surface of the lateral internally threaded slider 323 near the second limiting groove 322. The interior of the lateral internally threaded slider 323 is threadedly connected to the second bidirectional threaded rod 325 through a thread groove.

[0078] It can be imagined that when the second bidirectional threaded rod 325 rotates, it can drive the two horizontal internal threaded sliders 323 on the surface to move horizontally in opposite directions or toward each other. When the horizontal internal threaded slider 323 moves horizontally, it can drive the second limit block 324 on the surface to move horizontally. When the second limit block 324 moves horizontally, it can drive the two moving seats 100 to move horizontally through the cooperation of the second limit groove 322. When the moving seat 100 moves horizontally, it can drive the first limit groove 312 and the first limit block 314 to slide, and at the same time drive the vertical moving groove 311 and the vertical internal threaded slider 313 to slide.

[0079] like Figures 1-4 As shown, the driving assembly 330 includes a connecting plate 331 for mounting the first bidirectional threaded rod 315 and the second bidirectional threaded rod 325, and a driven gear 332 for rotating the first bidirectional threaded rod 315 and the second bidirectional threaded rod 325. The connecting plate 331 is mounted on both ends of the first bidirectional threaded rod 315 and the second bidirectional threaded rod 325, and the driven gear 332 is fixedly mounted on the top of the first bidirectional threaded rod 315 and the right end of the second bidirectional threaded rod 325.

[0080] It should be understood that when the driven gear 332 rotates, it can drive the first bidirectional threaded rod 315 and the second bidirectional threaded rod 325 to rotate respectively. When the first bidirectional threaded rod 315 and the second bidirectional threaded rod 325 rotate, they can rotate with the connecting plate 331. When the first bidirectional threaded rod 315 and the second bidirectional threaded rod 325 rotate, they can drive the vertical internal threaded slider 313 and the horizontal internal threaded slider 323 on the surface to perform vertical thread sliding and horizontal thread sliding.

[0081] like Figures 1-4 As shown, the driving assembly 330 also includes a driving gear 334 for rotating the driven gear 332, and a rotating shaft 333 for mounting the driving gear 334. The rotating shaft 333 is rotatably mounted through the center of the connecting plate 331 near the driven gear 332. The driving gear 334 that cooperates with the driven gear 332 is fixedly mounted on one end of the rotating shaft 333, and a driving member is mounted on the other end of the rotating shaft 333.

[0082] It can be imagined that the operation of the driving member can drive the rotating shaft 333 to rotate, and when the rotating shaft 333 rotates, it can rotate on the connecting plate 331, and when the rotating shaft 333 rotates, it can drive the driving gear 334 to rotate, and when the driving gear 334 rotates, it can drive the two driven gears 332 on the side to engage and rotate, and when the driven gear 332 engages and rotates, it can drive the first bidirectional threaded rod 315 and the second bidirectional threaded rod 325 to rotate.

[0083] like Figure 1-Figure 7As shown, the mounting assembly 410 includes a mounting bracket 413 for mounting the rotating assembly 420, a fixing rod 411 for fixing the mounting bracket 413, and a groove 412 for mounting the mounting bracket 413 and the fixing rod 411. The fixing rod 411 is fixedly mounted on the side of the connecting plate 331 near the lateral moving assembly 320. The other end of the fixing rod 411 is rotatably connected to the end of the rotating shaft 333. The mounting bracket 413 is fixedly mounted at the center of the fixing rod 411. The movable base 100 is provided with a groove 412 that cooperates with the fixing rod 411 and the mounting bracket 413.

[0084] It is worth noting that when the movable seat 100 moves, it can drive the groove 412 to move. When the groove 412 moves, it will separate from the fixed rod 411 and the mounting bracket 413. The mounting bracket 413 is installed in the center of the movable seat 100 and the expansion mouth 200 through the fixed rod 411, so that when the four movable seats 100 and the expansion mouth 200 move, the rotating assembly 420 can always work in the center position.

[0085] like Figures 1-8 As shown, the rotating assembly 420 includes a motor 421 for providing a rotational driving force for the expansion head 200, a rotating base 422 for rotating the telescopic assembly 430, and a rotating ring 425 for fixing the telescopic assembly 430. The motor 421 is fixedly mounted on the mounting frame 413, and the rotating base 422 is fixedly mounted on the output end of the motor 421. The rotating ring 425 is sleeved on the outer surface of the rotating base 422.

[0086] It should be understood that when the motor 421 is working, it can drive the rotating seat 422 at the output end to rotate. When the rotating seat 422 rotates, it can drive the telescopic component 430 to rotate through the rotating ring 425. When the telescopic component 430 rotates, it can drive the expansion head 200 at the end to rotate.

[0087] like Figures 1-8 As shown, the rotating assembly 420 also includes a rotating groove 423 for assembling a rotating ring 425, a guide groove 424 and a guide block 426 for driving the rotating ring 425 to rotate, and a push column 427 for pushing the expansion head 200 to rotate. The surface of the rotating seat 422 is symmetrically provided with two rotating grooves 423 that cooperate with the rotating ring 425. At least two guide grooves 424 are provided on the inner side of each rotating groove 423 in a circular array. A guide block 426 that cooperates with the guide groove 424 is fixedly mounted on the inner wall of the rotating ring 425. A push column 427 is fixedly mounted on the output end of the telescopic assembly 430, and one end of the push column 427 is fixedly mounted on the expansion head 200.

[0088] It can be imagined that when the rotating seat 422 rotates, it can drive the rotating groove 423 to rotate, and when the rotating groove 423 rotates, it can drive the guide groove 424 to rotate. When the guide groove 424 rotates to the side of the guide block 426, the guide groove 424 can push the guide block 426 to rotate. When the guide block 426 rotates, it can drive the rotating ring 425 to rotate. When the rotating ring 425 rotates, it can drive the pushing column 427 to rotate through the telescopic component 430. When the pushing column 427 rotates, it can drive the expansion mouth 200 to rotate. When the expansion mouth 200 rotates, the expansion part of the end of the steel pipe can be regularized.

[0089] like Figure 1-Figure 7 As shown, the rotating assembly 420 further includes a slider 428 and a slide groove 429 for guiding the expanding mouthpiece 200, a rotating plate 4210 and a rotating groove 4213 for limiting the expanding mouthpiece 200, and a slide rail 4211 and a track groove 4212 for limiting the rotating plate 4210. The front end of the expanding mouthpiece 200 is provided with a rotating groove 4213, the inner side of the rotating groove 4213 is provided with a track groove 4212, the inner side of the track groove 4212 is slidably connected with the slide rail 4211, the rotating plate 4210 is fixedly mounted on the slide rail 4211, the rotating plate 4210 is provided with a slide groove 429, the inner side of the slide groove 429 is movably connected with the slider 428, and the slider 428 is fixedly mounted on the other end of the pushing column 427;

[0090] It should be understood that when the push column 427 rotates, it can drive the slider 428 to move. When the slider 428 moves, it can slide in the slide groove 429. When the slider 428 slides in the slide groove 429, it will push the rotating plate 4210 to slide in the rotating groove 4213. When the rotating plate 4210 slides, it can drive the slide rail 4211 to move. When the slide rail 4211 moves, it can slide in the track groove 4212.

[0091] like Figures 1-8As shown, the telescopic assembly 430 includes a fixed cylinder 431 and an extension rod 433 for driving the expansion head 200 to rotate, as well as a piston 432 and an air inlet 434, a sealing hole 435 and a sealing plug 436 for sealing the sealing hole 435 for sucking external gas into the fixed cylinder 431. At least two fixed cylinders 431 are fixedly installed in an annular array on the outer surface of the rotating ring 425 near the guide block 426. The top of the fixed cylinder 431 is movably connected to the extension rod 433. The extension rod 433 is fixed to the outer surface of the rotating ring 425 near the guide block 426. 3 is fixedly mounted on the end thereof, and the piston 432 is movably connected to the interior of the fixed cylinder 431. An air inlet hole 434 is formed through the surface of the rotating ring 425 near the end of the fixed cylinder 431. One end of the air inlet hole 434 is formed inside the guide block 426. A sealing hole 435 is formed through the side of the guide block 426 near the air inlet hole 434. Sealing plugs 436 are fixedly mounted on both ends of the inner wall of the guide groove 424 near the sealing hole 435. The length of the sealing plug 436 is greater than that of the sealing hole 435.

[0092] It can be imagined that when the expansion mouth 200 moves, the extension rod 433 can be driven to move by the push column 427. When the extension rod 433 moves, the sealing plug 436 at the end can be driven to slide inside the fixed cylinder 431. When the sealing plug 436 slides, the external air can be transported to the interior of the fixed cylinder 431 through the sealing hole 435 and the air inlet hole 434. When the extension rod 433 moves to the specified position, the motor 421 can drive the rotating seat 422 to rotate. When the rotating seat 422 rotates, it can drive the rotating groove 423 and the guide groove 424 to rotate. When the guide groove 424 rotates, it can drive the end sealing plug 436 to rotate. When the sealing plug 436 rotates to the side of the sealing hole 435, the sealing plug 436 will be squeezed into the inside of the sealing hole 435 to seal. After the sealing hole 435 is sealed, the guide groove 424 will continue to rotate to push the guide block 426 and the rotating ring 425 to rotate. When the rotating ring 425 rotates, it can drive the expansion head 200 to rotate through the fixed cylinder 431, the extension rod 433, and the push column 427. Since the sealing hole 435 is sealed, the extension rod 433 can support the expansion head 200, so that the expansion head 200 can stably regulate the expansion of the steel pipe end. Sealing plugs 436 are provided at both ends of the guide groove 424, so that the forward and reverse rotation of the motor 421 can drive the sealing plug 436 to seal the sealing hole 435, thereby increasing the regularization effect of the expansion head 200 on the expansion of the steel pipe end.

[0093] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A variant punch for expanding the end of a pipe, comprising: A movable seat (100), wherein an expansion head (200) for expanding the end of a pipe is provided at the end of the movable seat (100), a driving mechanism (300) for driving the expansion head (200) to move vertically and horizontally is installed on the movable seat (100), and the movable seat (100) and the expansion head (200) are connected via a rotating mechanism (400), characterized in that: The driving mechanism (300) comprises a vertical moving component (310) and a horizontal moving component (320) for vertical and horizontal movement of the expansion head (200), and a driving component (330) for the vertical moving component (310) and the horizontal moving component (320) to work; A vertical moving assembly (310) and a horizontal moving assembly (320) are respectively installed on the moving seat (100), and a driving assembly (330) is installed on both the vertical moving assembly (310) and the horizontal moving assembly (320); The rotating mechanism (400) comprises a rotating assembly (420) for rotating the expansion head (200), a mounting assembly (410) for mounting the rotating assembly (420), and a telescopic assembly (430) for lifting and lowering the expansion head (200); The driving assembly (330) is mounted on a mounting assembly (410), the mounting assembly (410) is mounted on a rotating assembly (420), and the rotating assembly (420) is mounted on a telescopic assembly (430); The driving assembly (330) includes a rotating shaft (333) and a connecting plate (331); the mounting assembly (410) includes a mounting frame (413) for mounting the rotating assembly (420), a fixing rod (411) for fixing the mounting frame (413), and a groove (412) for mounting the mounting frame (413) and the fixing rod (411); A fixing rod (411) is fixedly mounted on the side of the connecting plate (331) close to the transverse moving assembly (320), and the other end of the fixing rod (411) is rotatably connected to the end of the rotating shaft (333); A mounting frame (413) is fixedly mounted at the center of the fixing rod (411), and a groove (412) is provided on the movable seat (100) to match the fixing rod (411) and the mounting frame (413); The rotating assembly (420) includes a motor (421) for providing a rotational driving force for the expansion head (200), a rotating seat (422) for rotating the telescopic assembly (430), and a rotating ring (425) for fixing the telescopic assembly (430); A motor (421) is fixedly mounted on the mounting frame (413), and a rotating seat (422) is fixedly mounted on the output end of the motor (421); A rotating ring (425) is sleeved on the outer surface of the rotating seat (422); The rotating assembly (420) further includes a rotating groove (423) for assembling the rotating ring (425), a guide groove (424) and a guide block (426) for driving the rotating ring (425) to rotate, and a pushing column (427) for pushing the expansion head (200) to rotate. Two rotating grooves (423) cooperating with the rotating ring (425) are symmetrically formed on the surface of the rotating seat (422), and at least two guide grooves (424) are formed in an annular array on the inner side of each rotating groove (423); A guide block (426) that matches the guide groove (424) is fixedly mounted on the inner wall of the rotating ring (425), and a push column (427) is fixedly mounted on the output end of the telescopic assembly (430); One end of the pushing column (427) is fixedly mounted on the expansion head (200); The rotating assembly (420) further includes a slider (428) and a slide groove (429) for guiding the expansion mouthpiece (200), a rotating plate (4210) and a rotating groove (4213) for limiting the position of the expansion mouthpiece (200), and a slide rail (4211) and a track groove (4212) for limiting the position of the rotating plate (4210); A rotation groove (4213) is provided at the front end of the expansion head (200), and a track groove (4212) is provided inside the rotation groove (4213); The track groove (4212) is slidably connected to a slide rail (4211), and a rotating plate (4210) is fixedly mounted on the slide rail (4211); The rotating plate (4210) is provided with a sliding groove (429), and a slider (428) is movably connected inside the sliding groove (429); The slider (428) is fixedly mounted on the other end of the push column (427).

2. A variant punch for expanding the end of a pipe according to claim 1, characterized in that: The vertical movement assembly (310) includes a vertical internal thread slider (313) and a first limiting block (314) for vertical movement of the moving seat (100), a vertical movement groove (311) and a first limiting groove (312) for mounting the vertical internal thread slider (313) and the first limiting block (314), and a first bidirectional threaded rod (315) for moving the vertical internal thread slider (313) and the first limiting block (314); A vertical moving groove (311) is vertically opened on the top of the moving seat (100), and two first limiting grooves (312) are horizontally opened on the front and rear inner walls of the vertical moving groove (311); A vertical internal thread slider (313) is movably connected inside the vertical movable groove (311), and two first limiting blocks (314) are fixedly installed on the surface of the vertical internal thread slider (313) close to the first limiting groove (312); The interior of the vertical internal thread slider (313) is threadedly connected to a first bidirectional threaded rod (315) via a thread groove.

3. A modified punch for expanding the end of a pipe according to claim 2, characterized in that: The transverse movement assembly (320) includes a transverse internal thread slider (323) and a second limiting block (324) for vertical movement of the moving seat (100), a transverse movement groove (321) and a second limiting groove (322) for mounting the transverse internal thread slider (323) and the second limiting block (324), and a second bidirectional threaded rod (325) for moving the transverse internal thread slider (323) and the second limiting block (324); A transverse moving groove (321) is formed on the side of the moving seat (100), and two second limiting grooves (322) are formed vertically on the inner wall of the transverse moving groove (321). A transverse internal thread slider (323) is movably connected inside the transverse movable groove (321), and two second limiting blocks (324) are fixedly installed on the surface of the transverse internal thread slider (323) close to the second limiting groove (322); The interior of the transverse internal threaded slider (323) is threadedly connected to a second bidirectional threaded rod (325) via a thread groove.

4. A modified punch for expanding the end of a pipe according to claim 3, characterized in that: The driving assembly (330) includes a connecting plate (331) for mounting the first bidirectional threaded rod (315) and the second bidirectional threaded rod (325), and a driven gear (332) for rotating the first bidirectional threaded rod (315) and the second bidirectional threaded rod (325); Connecting plates (331) are installed at both ends of the first bidirectional threaded rod (315) and the second bidirectional threaded rod (325), and driven gears (332) are fixedly installed at the top of the first bidirectional threaded rod (315) and the right end of the second bidirectional threaded rod (325).

5. A modified punch for expanding the end of a pipe according to claim 4, characterized in that: The driving assembly (330) further includes a driving gear (334) for rotating the driven gear (332), and a rotating shaft (333) for mounting the driving gear (334); A rotating shaft (333) is rotatably mounted through the center of the connecting plate (331) near the driven gear (332), and a driving gear (334) that matches the driven gear (332) is fixedly mounted on one end of the rotating shaft (333); A driving member is installed at the other end of the rotating shaft (333).

6. A modified punch for expanding the end of a pipe according to claim 1, characterized in that: The telescopic assembly (430) includes a fixed cylinder (431) and an extension rod (433) for driving the expansion head (200) to rotate, a piston (432) for sucking external gas into the fixed cylinder (431), an air inlet (434), a sealing hole (435), and a sealing plug (436) for sealing the sealing hole (435); At least two fixed cylinders (431) are fixedly mounted in a circular array on the outer surface of the rotating ring (425) close to the guide block (426), and the top ends of the fixed cylinders (431) are movably connected to extension rods (433); A piston (432) is fixedly mounted on the end of the extension rod (433), and the piston (432) is movably connected to the interior of the fixed cylinder (431); An air inlet hole (434) is provided through the surface of the rotating ring (425) near the end of the fixed cylinder (431), and one end of the air inlet hole (434) is provided inside the guide block (426); A sealing hole (435) is formed through the side of the guide block (426) close to the air inlet hole (434), and sealing plugs (436) are fixedly installed on both ends of the inner wall of the guide groove (424) close to the sealing hole (435); The length of the sealing plug (436) is greater than the length of the sealing hole (435).

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