Automatic pointing machine for seamless steel pipes

Abstract

An automatic point rolling machine for seamless steel pipes includes a base, on which are respectively provided a point rolling mechanism, a point rolling drive mechanism, a steel pipe moving mechanism, and a clamping and rotating mechanism. The point rolling mechanism includes a pair of wall panels, a power shaft, a lower point rolling roller located above the power shaft, and an upper point rolling roller located above the lower point rolling roller. One end of the power shaft is transmission-connected to one end of the lower point rolling roller, and the other end of the lower point rolling roller is transmission-connected to one end of the upper point rolling roller. The other end of the power shaft is transmission-connected to the point rolling drive mechanism. The steel pipe moving mechanism includes a fixed base plate fixed above two wall panels, a movable base plate slidingly arranged on the fixed base plate, and a movable beam with one end fixed to the movable base plate and extending backward. The clamping and rotating mechanism is slidingly arranged below the movable beam in the forward and backward directions. The machine can automatically complete the actions of clamping and rotating the steel pipe and reciprocating the pipe for rolling, thereby improving the efficiency and safety of point rolling and reducing labor costs.

Description

Technical Field

[0001] The invention belongs to the technical field of seamless steel pipe processing equipment, and particularly relates to an automatic pointing machine for seamless steel pipes. Background Art

[0002] Seamless steel pipes are commonly used in everyday life, with a wide range of applications. They hold an irreplaceable position in the manufacture of structural and mechanical parts, as well as pipes or structural components used to transport fluids. Cold-drawing is one of the most common methods for processing seamless steel pipes, offering low cost and high speed. However, before cold drawing, one end of the seamless pipe must be pointed (i.e., reduced). This allows it to be gripped by the cold drawing trolley after passing through the cold drawing die, while also preventing the pipe end from separating from the trolley due to deformation during the cold drawing process. Currently, this process is mostly performed manually, using a pair of sharpening rollers to press the end of the seamless pipe. During the pressing process, the pipe is manually handled and rotated to form a uniformly constricted tip. This process is not only inefficient but can also pose risks to operators. In particular, if the pipe becomes stuck between the sharpening rollers, it can cause the pipe to swing suddenly, posing a safety hazard and potentially endangering the lives of workers.

[0003] In the prior art, for example, the "Efficient Automatic Shrinking Machine for Seamless Steel Pipes" disclosed in Chinese Utility Model Patent Publication No. CN212494972U includes a base plate, a parallel slide rail I disposed on the upper end surface of the base plate, and a processing frame disposed in front of the parallel slide rail. Upper and lower rollers are disposed in parallel within the processing frame, and the surfaces of the upper and lower rollers are in contact. A plurality of ring-shaped die grooves are symmetrically and evenly disposed on the surfaces of the upper and lower rollers. The cross-sections of the ring-shaped die grooves, which are symmetrical on the upper and lower rollers, form shrinkage channels. The diameter of the shrinkage channels formed on the upper and lower rollers gradually increases from the center to the sides. A shrinkage drive motor is fixed to the base plate. Although the machine can automatically clamp the steel pipe and feed the pipe for rolling, its degree of automation is low, and it cannot automatically rotate the steel pipe for uniform shrinkage. Therefore, it cannot effectively guarantee the shrinkage quality and cannot meet the actual needs of manufacturers.

[0004] In view of the above situation, it is necessary to design an automatic steel pipe pointing machine that can realize automatic clamping, rotation and reciprocating feeding of steel pipes for rolling. To this end, the applicant has made a useful design, and the technical solution to be introduced below is produced in this context. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic pointing machine for seamless steel pipes, which helps to improve the structure of the pointing machine so that it can automatically complete the actions of clamping and rotating steel pipes and reciprocating pipe feeding and rolling, which is beneficial to improving the degree of automation of pointing of seamless steel pipes and effectively improving the pointing efficiency and safety of pointing.

[0006] The object of the present invention is achieved in this way: an automatic sharpening machine for seamless steel pipes comprises a base, on which are respectively provided a sharpening mechanism, a sharpening drive mechanism transmission-connected to the sharpening mechanism, a steel pipe moving mechanism arranged above the sharpening mechanism and a clamping and rotating mechanism arranged on the steel pipe moving mechanism and cooperating with the sharpening mechanism for sharpening, the sharpening mechanism comprising a pair of wall panels, a power shaft rotatably arranged between the two wall panels, a lower sharpening roller rotatably arranged between the two wall panels and located above the power shaft, and an upper sharpening roller rotatably arranged between the two wall panels and located above the lower sharpening roller. One end of the power shaft is transmission-connected to one end of the lower sharpening roller, the other end of the lower sharpening roller is transmission-connected to one end of the upper sharpening roller, and the other end of the power shaft is transmission-connected to the sharpening drive mechanism, the steel pipe moving mechanism comprises a fixed bottom plate fixed above the two wall panels, a movable bottom plate slidingly arranged on the fixed bottom plate left and right and a movable beam with one end fixed on the movable bottom plate and extending backward, the clamping and rotating mechanism is slidably arranged below the movable beam in the front-rear direction.

[0007] In a specific embodiment of the present invention, the wall panels are respectively arranged relatively on a sharpening frame, and the sharpening frame is fixed on the base, and the two ends of the power shaft respectively extend from the wall panels on both sides and are rotatably supported by a power shaft bearing between the wall panels, and the two ends of the lower sharpening roller respectively extend from the wall panels on both sides and are rotatably supported by a lower sharpening roller bearing between the wall panels, and the two ends of the upper sharpening roller respectively extend from the wall panels on both sides and are rotatably supported by an upper sharpening roller bearing between the wall panels, one end of the power shaft is provided with a power shaft gear, one end of the lower sharpening roller is provided with a transmission gear meshing with the power shaft gear, the other end of the lower sharpening roller is provided with a lower sharpening roller gear, and one end of the upper sharpening roller is provided with an upper sharpening roller gear meshing with the lower sharpening roller gear.

[0008] In another specific embodiment of the present invention, the rolling tip drive mechanism includes a motor, a first reducer, and a second reducer. The motor is fixed on the first reducer and is connected to each other in a transmission manner. The first reducer is provided with a first reducer output shaft, and the two ends of the second reducer are respectively provided with a second reducer input shaft and a second reducer output shaft. The first reducer and the second reducer are respectively fixed on the base. The first reducer output shaft and the second reducer input shaft are connected in a transmission manner through a first coupling, and the second reducer output shaft is connected in a transmission manner to the other end of the power shaft through a second coupling.

[0009] The cam is fixedly mounted on the left side of the movable base, and the cam is fixedly mounted on the movable base, wherein the cam is fixedly mounted on the movable base, wherein the cam is fixedly mounted on the movable base, and the cam is fixedly mounted on the movable base.

[0010] In another specific embodiment of the present invention, the clamping rotating mechanism includes a clamping rotating base plate slidably arranged under the moving beam, a pair of rotating mechanisms symmetrically fixed front and back under the clamping rotating base plate, a first clamping roller and a second clamping roller rotatably arranged between the two rotating mechanisms, a pair of first clamping jaws fixed at both ends of the first clamping roller, a pair of second clamping jaws fixed at both ends of the second clamping roller, and a clamping driving mechanism arranged between the two rotating mechanisms and driving the first clamping roller and the second clamping roller to rotate. A rotating pushing cylinder is hinged on the clamping rotating base plate and located above any one of the rotating mechanisms, and a rotating pushing cylinder push rod is formed on the rotating pushing cylinder. One end of the rotating pushing cylinder push rod extends downward and is hinged to the corresponding rotating mechanism. A second slide rail is fixed under the moving beam, and a pair of clamping rotating base plate sliders sliding on the second slide rail are provided at positions corresponding to the second slide rails on the clamping rotating base plate.

[0011] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod has a round shank to contact with said linking rod. There is a clamping roller bearing cover, and a circle of clamping roller bearing cover screws are arranged around the clamping roller bearing cover, and a clamping roller bearing cover fixing screw hole is respectively provided at the position of the clamping roller bearing cover screw on the slide plate, and the two ends of the first clamping roller and the second clamping roller are respectively passed through the corresponding clamping roller bearing cover and fixed to the first clamping jaw and the second clamping jaw, and a first spacer and a second spacer are respectively provided between the first clamping jaw and the second clamping jaw and the first clamping roller bearing and the second clamping roller bearing on the adjacent side, and the first spacer and the second spacer are respectively sleeved on the first clamping roller and the second clamping roller, one end of the first spacer rests on one side of the first clamping jaw, and the other end passes through the corresponding clamping roller bearing cover and rests on the corresponding first clamping roller bearing, one end of the second spacer rests on one side of the second clamping jaw, and the other end passes through the corresponding clamping roller bearing cover and rests on the corresponding second clamping roller bearing, and a slide plate hinge ear is formed at the upper right corner of the slide plate, and the slide plate hinge ear is used to be hinged with the rotary push cylinder push rod of the rotary push cylinder.

[0012] In a further specific embodiment of the present invention, the first clamping jaw and the second clamping jaw are respectively provided with a first clamping jaw fixing hole and a second clamping jaw fixing hole, the first clamping jaw fixing hole and the second clamping jaw fixing hole are respectively sleeved and keyed on the first clamping roller and the second clamping roller, the upper ends of the first clamping jaw and the second clamping jaw are respectively formed with a first sector tooth and a second sector tooth on the side surfaces opposite to each other, the first sector tooth and the second sector tooth are respectively coaxially arranged with the first clamping roller and the second clamping roller, the first sector tooth and the second sector tooth are meshed with each other, and a first clamping roller screw hole and a second clamping roller are respectively provided in the middle of the two end portions of the first clamping roller and the second clamping roller. Roller screw hole, a first clamping jaw baffle and a second clamping jaw baffle are respectively fixed on the end faces of the first clamping roller and the second clamping roller, the outer diameters of the first clamping jaw baffle and the second clamping jaw baffle are respectively larger than the apertures of the first clamping jaw fixing hole and the second clamping jaw fixing hole and are respectively fixedly connected to the corresponding first clamping roller screw hole and the second clamping roller screw hole by a first clamping jaw baffle screw and a second clamping jaw baffle screw, the lower ends of the first clamping jaw and the second clamping jaw are respectively provided with a first clamping jaw pad and a second clamping jaw pad on the opposite side faces, and the first clamping jaw pad and the second clamping jaw pad are respectively formed with a first pipe clamping groove and a second pipe clamping groove that cooperate with each other on the side faces opposite to each other.

[0013] In a more specific embodiment of the present invention, the front and rear sides of the rotary push cylinder are respectively provided with a clamping rotary base support seat fixed on the clamping rotary base plate, and the front and rear sides of the middle part of the rotary push cylinder are respectively constituted with a rotary push cylinder shaft rotatably supported in the clamping rotary base support seat on the corresponding side, and the clamping rotary base plate is provided with a rotary push cylinder yielding port at the position of the rotary push cylinder, and the end of the rotary push cylinder push rod is provided with a rotary push cylinder push rod articulated seat, which is hingedly fixed to the corresponding slide plate articulated ear.

[0014] In yet another specific embodiment of the present invention, the clamping drive mechanism includes a clamping cylinder, a pair of clamping cylinder hinged ears formed on one end of the clamping cylinder, a clamping cylinder push rod formed on one end of the clamping cylinder and a clamping cylinder push rod hinged seat formed at the end of the clamping cylinder push rod, the middle parts of the first clamping roller and the second clamping roller are respectively formed with a first clamping roller boss and a second clamping roller boss, the first clamping roller boss is upwardly formed with a first clamping push plate on a side away from the second clamping roller, and the second clamping roller boss is formed on a side away from the first clamping roller, the upper end of the first clamping push plate is hinged to the clamping cylinder hinged ear, and the upper end of the second clamping push plate is hinged to the clamping cylinder push rod hinged seat.

[0015] In yet another specific embodiment of the present invention, the lower sharpening roller and the upper sharpening roller are constituted by a lower sharpening roller eccentric and an upper sharpening roller eccentric, and the lower sharpening roller eccentric and the upper sharpening roller eccentric are respectively provided with a group of lower sharpening roller grooves and a group of upper sharpening roller grooves of different diameters, and the lower sharpening roller grooves and the upper sharpening roller grooves opposite to each other have the same diameter and cooperate with each other to form a sharpening hole.

[0016] After adopting the above structure, the present invention has the beneficial effect: since the steel pipe moving mechanism is used to control the movement of the clamping and rotating mechanism and cooperate with the pointing mechanism to point the seamless steel pipe, the actions of clamping and rotating the steel pipe and reciprocating pipe feeding and pressing can be automatically completed, thereby greatly improving the degree of automation of seamless steel pipe pointing, effectively improving the pointing efficiency and pointing safety, and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention.

[0018] Figure 2 for Figure 1 Schematic diagram of the side structure.

[0019] Figure 3 It is a structural schematic diagram of the clamping and rotating mechanism and the moving beam of the present invention.

[0020] Figure 4 Schematic diagram of the structure of the clamping drive mechanism of the present invention.

[0021] Figure: 1. Pointing mechanism, 11. Wall panel, 12. Power shaft, 121. Power shaft gear, 122. Power shaft bearing, 13. Lower point-cutting roller, 131. Lower point-cutting roller eccentric, 1311. Lower point-cutting roller groove, 132. Lower point-cutting roller gear, 133. Transmission gear, 134. Lower point-cutting roller bearing, 14. Upper point-cutting roller, 141. Upper point-cutting roller eccentric, 1411. Upper point-cutting roller groove, 142. Upper point-cutting roller gear, 143. Upper point-cutting roller bearing, 15. Pointing hole, 16. Pointing frame; 2. Pointing drive mechanism, 21. Motor, 22. First reduction gearbox, 221. First reduction gearbox output shaft, 23. Second reduction gearbox, 231. Second reduction gearbox input shaft, 232. Second reduction gearbox output shaft, 24. First coupling, 25. Second coupling; 3. Steel pipe moving mechanism, 31. Fixed base plate, 311. First slide rail, 312. Fixed ear, 32. Moving base plate, 321. Moving base plate slider, 322. First moving cylinder, 3221. First moving cylinder push rod, 33. Moving beam, 331. Second moving cylinder, 3311. Second moving cylinder seat, 3312. Second moving cylinder push rod, 332. Moving bracket, 333. Moving clearance groove, 334. Second slide rail; 4. Clamping and rotating mechanism, 41. Clamping and rotating base plate, 411. Clamping and rotating base plate slider, 412. Rotating push cylinder clearance port, 42. Rotating mechanism, 421. Rotating fixed plate, 4211. Slide plate limit rod screw clearance hole, 4 22. Slide plate, 4221. Arc chute, 4222. Clamping roller bearing cavity, 4223. Clamping roller clearance hole, 4224. Clamping roller bearing cover fixing screw hole, 4225. Slide plate hinge ear, 423. Slide plate limit rod, 4231. Slide plate limit rod screw, 4232. Slide plate limit rod nut, 424. Slide sleeve, 425. Clamping roller bearing cover, 4251. Clamping roller bearing cover screw, 43. First clamping roller, 431. First clamping roller bearing, 432. First spacer, 433. First clamping roller screw hole, 434. First clamping roller boss, 4341. First clamping push plate, 44. Second clamping roller, 441. Second clamping roller bearing, 442. Second spacer, 443. Second clamping roller screw hole, 4 44. Second clamping roller boss, 4441. Second clamping push plate, 45. First clamping jaw, 451. First clamping jaw fixing hole, 452. First sector tooth, 453. First clamping jaw pad, 4531. First clamping pipe groove, 454. First clamping jaw baffle, 4541. First clamping jaw baffle screw, 46. Second clamping jaw, 461. Second clamping jaw fixing hole, 462. Second sector tooth, 463. Second clamping jaw pad, 4631. Second clamping pipe groove, 464. Second clamping jaw baffle, 4641. Second clamping jaw baffle screw, 47. Clamping drive mechanism, 471. Clamping cylinder, 472. Clamping cylinder hinge lug, 473. Clamping cylinder push rod, 474. Clamping cylinder push rod hinge seat, 48. Rotating push cylinder, 481.Clamping and rotating base support, 4811. Rotating cylinder shaft, 482. Rotating cylinder push rod, 4821. Rotating cylinder push rod hinged base; 5. Base; 6. Seamless steel pipe. DETAILED DESCRIPTION

[0022] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the description of the embodiments does not limit the technical solutions. Any changes in form rather than substance based on the concept of the present invention should be considered as the scope of protection of the present invention.

[0023] In the following description, all concepts related to directionality or orientation, such as up, down, left, right, front and back, are based on Figure 1 The position is used as a reference, and thus it cannot be understood as a special limitation on the technical solution provided by the present invention.

[0024] See also Figures 1 to 3 The present invention relates to an automatic sharpening machine for seamless steel pipes, comprising a base 5, on which are respectively provided a sharpening mechanism 1, a sharpening drive mechanism 2 connected to the sharpening mechanism 1, a steel pipe moving mechanism 3 arranged above the sharpening mechanism 1, and a clamping and rotating mechanism 4 arranged on the steel pipe moving mechanism 3 and cooperating with the sharpening mechanism 1 for sharpening. The sharpening mechanism 1 comprises a pair of wall panels 11, a power shaft 12 rotatably arranged between the two wall panels 11, a lower sharpening roller 13 rotatably arranged between the two wall panels 11 and located above the power shaft 12, and a lower sharpening roller 13 rotatably arranged between the two wall panels 11 and located above the power shaft 12. The upper sharpening roller 14 is located above the lower sharpening roller 13, one end of the aforementioned power shaft 12 is transmission-connected to one end of the lower sharpening roller 13, the other end of the aforementioned lower sharpening roller 13 is transmission-connected to one end of the upper sharpening roller 14, the other end of the aforementioned power shaft 12 is transmission-connected to the sharpening drive mechanism 2, the aforementioned steel pipe moving mechanism 3 includes a fixed base plate 31 fixed above the two wall panels 11, a moving base plate 32 slidingly arranged on the fixed base plate 31 left and right, and a moving beam 33 with one end fixed on the moving base plate 32 and extending backward, the aforementioned clamping and rotating mechanism 4 is slidingly arranged below the moving beam 33 along the front and rear directions. The aforementioned lower sharpening roller 13 and upper sharpening roller 14 are constituted by a lower sharpening roller eccentric wheel 131 and an upper sharpening roller eccentric wheel 141. A group of lower sharpening roller grooves 1311 and a group of upper sharpening roller grooves 1411 with different diameters are respectively spaced apart on the aforementioned lower sharpening roller eccentric wheel 131 and the upper sharpening roller eccentric wheel 141. The aforementioned lower sharpening roller grooves 1311 and upper sharpening roller grooves 1411 facing each other have the same diameter and cooperate with each other to form a sharpening hole 15.

[0025] See also Figure 1The wall panels 11 are respectively arranged on a sharpening frame 16 relative to each other, and the sharpening frame 16 is fixed on the base 5. The two ends of the power shaft 12 extend from the wall panels 11 on both sides and are rotatably supported by a power shaft bearing 122 between the wall panels 11. The two ends of the lower sharpening roller 13 extend from the wall panels 11 on both sides and are rotatably supported by a lower sharpening roller bearing 134 between the wall panels 11. The two ends of the upper sharpening roller 14 extend from the wall panels 11 on both sides and are rotatably supported by an upper sharpening roller bearing 143 between the wall panels 11. One end of the power shaft 12 is provided with a power shaft gear 121, one end of the lower sharpening roller 13 is provided with a transmission gear 133 meshing with the power shaft gear 121, the other end of the lower sharpening roller 13 is provided with a lower sharpening roller gear 132, and one end of the upper sharpening roller 14 is provided with an upper sharpening roller gear 142 meshing with the lower sharpening roller gear 132.

[0026] Furthermore, the aforementioned rolling tip drive mechanism 2 includes a motor 21, a first reduction gearbox 22, and a second reduction gearbox 23. The aforementioned motor 21 is fixed on the first reduction gearbox 22 and is connected to each other in a transmission manner. The aforementioned first reduction gearbox 22 is constituted with a first reduction gearbox output shaft 221, and the two ends of the aforementioned second reduction gearbox 23 are respectively constituted with a second reduction gearbox input shaft 231 and a second reduction gearbox output shaft 232. The aforementioned first reduction gearbox 22 and the second reduction gearbox 23 are respectively fixed on the base 5. The aforementioned first reduction gearbox output shaft 221 and the second reduction gearbox input shaft 231 are connected in a transmission manner through a first coupling 24, and the aforementioned second reduction gearbox output shaft 232 is connected in a transmission manner to the other end of the power shaft 12 through a second coupling 25.

[0027] See also Figure 1 Combined with Figure 2A pair of first slide rails 311 are fixed on the fixed base plate 31 along the left and right directions, a fixed ear 312 is formed on the upper left side of the fixed base plate 31, a pair of movable base plate sliders 321 are respectively provided at the positions corresponding to the first slide rails 311 below the movable base plate 32, a first movable cylinder 322 is fixed at a position between the two first slide rails 311 below the movable base plate 32, one end of the first movable cylinder 322 is formed with a first movable cylinder push rod 3221, the first movable cylinder push rod 3221 is hinged to the fixed ear 312, and the movable base plate 322 is provided with a plurality of movable base plate sliders 321. One end of the beam 33 is fixed above the movable base plate 32 and extends backward. A second movable cylinder 331 is fixed in the movable beam 33 through a pair of second movable cylinder seats 3311. The second movable cylinder 331 is arranged in the front-to-back direction and has a second movable cylinder push rod 3312 formed backward. A movable clearance groove 333 is provided on the left side surface of the movable beam 33. A movable bracket 332 is fixed on the second movable cylinder push rod 3312. One end of the movable bracket 332 extends out of the movable clearance groove 333 and is bent downward and fixedly connected to the clamping and rotating mechanism 4.

[0028] See also Figure 3 Combined with Figure 4The aforementioned clamping rotation mechanism 4 includes a clamping rotation base plate 41 slidably arranged below the moving beam 33, a pair of rotation mechanisms 42 symmetrically fixed to the bottom of the clamping rotation base plate 41, a first clamping roller 43 and a second clamping roller 44 respectively rotatably arranged between the two rotation mechanisms 42, a pair of first clamping claws 45 respectively fixed to both ends of the first clamping roller 43, a pair of second clamping claws 46 respectively fixed to both ends of the second clamping roller 44, and a clamping drive mechanism 47 arranged between the two rotation mechanisms 42 and driving the first clamping roller 43 and the second clamping roller 44 to rotate. A rotating push cylinder 48 is hinged on the rotating base plate 41 and located above any rotating mechanism 42. A rotating push cylinder push rod 482 is formed on the aforementioned rotating push cylinder 48. One end of the rotating push cylinder push rod 482 extends downward and is hinged to the corresponding rotating mechanism 42. A second slide rail 334 is fixed below the aforementioned moving beam 33. A pair of clamping rotating base sliders 411 sliding on the second slide rail 334 are provided at the position corresponding to the second slide rail 334 on the aforementioned clamping rotating base plate 41. The aforementioned moving bracket 332 is also fixed on the clamping rotating base plate 41. The clamping drive mechanism 47 comprises a clamping cylinder 471, a pair of clamping cylinder hinge ears 472 formed on one end of the clamping cylinder 471, a clamping cylinder push rod 473 formed on one end of the clamping cylinder 471, and a clamping cylinder push rod hinge seat 474 formed at the end of the clamping cylinder push rod 473. The middle portions of the first clamping roller 43 and the second clamping roller 44 are respectively formed with a first clamping roller boss 434 and a second clamping roller boss 435. 44. The first clamping roller boss 434 is formed with a first clamping push plate 4341 on a side away from the second clamping roller 44, and the second clamping roller boss 444 is formed with a second clamping push plate 4441 on a side away from the first clamping roller 43. The upper end of the first clamping push plate 4341 is hinged to the clamping cylinder hinge ear 472, and the upper end of the second clamping push plate 4441 is hinged to the clamping cylinder push rod hinge seat 474.

[0029] Furthermore, the aforementioned rotating mechanism 42 includes a rotating fixed plate 421, a slide plate 422 that slides in an arc shape on the rotating fixed plate 421, a pair of slide plate limiting rods 423 are fixed on the aforementioned rotating fixed plate 421, an arc-shaped sliding groove 4221 is provided on the aforementioned slide plate 422 corresponding to the position of the slide plate limiting rod 423, a pair of sliding sleeves 424 are respectively provided on the aforementioned slide plate limiting rod 423 and at the position between the arc-shaped sliding groove 4221, one end of the aforementioned slide plate limiting rod 423 is respectively constituted with a slide plate limiting rod screw 4231, and a slide plate limiting rod is respectively provided at the position corresponding to the slide plate limiting rod screw 4231 on the aforementioned rotating fixed plate 421. The screw rod gives way hole 4211, and the aforementioned slide plate limit rod screw 4231 is connected and fixed with a pair of slide plate limit rod nuts 4232 after passing through the corresponding slide plate limit rod screw giving way hole 4211. The aforementioned slide plate 422 is respectively provided with a clamping roller bearing cavity 4222 at the position corresponding to the first clamping roller 43 and the second clamping roller 44. A clamping roller giving way hole 4223 is provided in the aforementioned clamping roller bearing cavity 4222. A first clamping roller bearing 431 and a second clamping roller bearing 441 are respectively provided between the aforementioned first clamping roller 43 and the second clamping roller 44 and the corresponding clamping roller bearing cavity 4222. The clamping roller bearing cover 425 is provided with a circle of clamping roller bearing cover screws 4251 around the aforementioned clamping roller bearing cover 425, and the aforementioned slide plate 422 is provided with a clamping roller bearing cover fixing screw hole 4224 at the position corresponding to the clamping roller bearing cover screw 4251. The two ends of the aforementioned first clamping roller 43 and the second clamping roller 44 are respectively fixed with the first clamping jaw 45 and the second clamping jaw 46 after passing through the corresponding clamping roller bearing cover 425. A first spacer 432 and a second spacer 442 are respectively provided between the aforementioned first clamping jaw 45 and the second clamping jaw 46 and the first clamping roller bearing 431 and the second clamping roller bearing 441 on the adjacent side. A spacer sleeve 432 and a second spacer sleeve 442 are respectively mounted on the first clamping roller 43 and the second clamping roller 44. One end of the first spacer sleeve 432 abuts against a side surface of the first clamping jaw 45, and the other end passes through the corresponding clamping roller bearing cover 425 and abuts against the corresponding first clamping roller bearing 431. One end of the second spacer sleeve 442 abuts against a side surface of the second clamping jaw 46, and the other end passes through the corresponding clamping roller bearing cover 425 and abuts against the corresponding second clamping roller bearing 441. A slide plate hinge ear 4225 is formed at the upper right corner of the slide plate 422, and the slide plate hinge ear 4225 is used to be hinged with the rotary push cylinder push rod 482 of the rotary push cylinder 48.

[0030] Furthermore, the first clamping jaw 45 and the second clamping jaw 46 are respectively provided with a first clamping jaw fixing hole 451 and a second clamping jaw fixing hole 461, and the first clamping jaw fixing hole 451 and the second clamping jaw fixing hole 461 are respectively sleeved and keyed on the first clamping roller 43 and the second clamping roller 44, and the upper ends of the first clamping jaw 45 and the second clamping jaw 46 are respectively formed with a first sector tooth 452 and a second sector tooth 462 on the side surfaces opposite to each other, and the first sector tooth 452 and the second sector tooth 462 are respectively coaxially arranged with the first clamping roller 43 and the second clamping roller 44, and the first sector tooth 452 and the second sector tooth 462 are meshed with each other, and a first clamping roller screw hole 433 and a second clamping roller screw hole 443 are respectively provided in the middle of the two end portions of the first clamping roller 43 and the second clamping roller 44, A first clamping roller baffle 454 and a second clamping roller baffle 464 are fixed on the end faces of a clamping roller 43 and a second clamping roller 44 respectively. The outer diameters of the first clamping roller baffle 454 and the second clamping roller baffle 464 are respectively larger than the apertures of the first clamping jaw fixing hole 451 and the second clamping jaw fixing hole 461 and are fixedly connected to the corresponding first clamping roller screw hole 433 and a second clamping roller screw hole 443 by a first clamping jaw baffle screw 4541 and a second clamping jaw baffle screw 4641 respectively. The lower ends of the first clamping jaw 45 and the second clamping jaw 46 are respectively provided with a first clamping jaw pad 453 and a second clamping jaw pad 463 on the opposite side surfaces. The first clamping jaw pad 453 and the second clamping jaw pad 463 are respectively formed with a first pipe clamping groove 4531 and a second pipe clamping groove 4631 that cooperate with each other on the opposite side surfaces.

[0031] Furthermore, the front and rear sides of the aforementioned rotary pushing cylinder 48 are respectively provided with a clamping rotary base support seat 481 fixed on the clamping rotary base 41, and the front and rear sides of the middle part of the aforementioned rotary pushing cylinder 48 are respectively constituted with a rotary pushing cylinder shaft 4811 rotatably supported in the clamping rotary base support seat 481 on the corresponding side, and the aforementioned clamping rotary base 41 is provided with a rotary pushing cylinder yielding port 412 at the position of the rotary pushing cylinder 48, and the end of the aforementioned rotary pushing cylinder push rod 482 is provided with a rotary pushing cylinder push rod articulated seat 4821, and the rotary pushing cylinder push rod articulated seat 4821 is hingedly fixed to the corresponding slide plate articulated ear 4225.

[0032] See also Figure 1 、 Figure 2 Combined with Figure 3 and Figure 4, describe the working principle of the present invention: first, select the appropriate aforementioned sharpening hole 15 according to the diameter of the seamless steel pipe 6, specifically: drive the aforementioned first moving cylinder 322 to make the moving base plate 32, the moving beam 33 and the clamping rotating mechanism 4 slide left and right on the fixed base plate 31, and make the seamless steel pipe 6 clamped by the clamping rotating mechanism 4 just align with the appropriate sharpening hole 15, start the aforementioned motor 21 to make it cycle forward and reverse, and the duration of its forward and reverse rotation is adjusted according to the length of the sharpening, the aforementioned motor 21 drives the first reduction box 22, the second reduction box 23 and the power shaft 12 to rotate in turn, the aforementioned power shaft 12 drives the transmission gear 133 and the lower sharpening roller 13 to rotate through the power shaft gear 121, and the aforementioned lower sharpening roller 13 is rotated through the lower sharpening roller gear 132 drives the upper sharpening roller gear 142 and the upper sharpening roller 14 to rotate synchronously, so that the aforementioned lower sharpening roller eccentric wheel 131 and the upper sharpening roller eccentric wheel 141 rotate relatively synchronously and press the end of the seamless steel pipe 6 through the lower sharpening roller groove 1311 and the upper sharpening roller groove 1411. During the operation of the aforementioned motor 21, the second moving cylinder push rod 3312 of the aforementioned second moving cylinder 331 is pushed backward to make the clamping rotating mechanism 4 slide backward along the moving beam 33 to the position of clamping the seamless steel pipe 6. At this time, the clamping cylinder push rod 473 of the aforementioned clamping cylinder 471 is in a retracted state, causing the first clamping roller 43 and the second clamping roller 44 to rotate, and the corresponding first clamping jaw 45 and the second clamping jaw 46 are in an open state, and the pipe feeding machine sends the seamless steel pipe to be processed. The steel pipe 6 is fed into the space between the first clamping jaw 45 and the second clamping jaw 46, and the clamping cylinder 471 is driven to push the clamping cylinder push rod 473 out, and the first clamping roller 43 and the second clamping roller 44 rotate. The first clamping jaw 45 and the second clamping jaw 46 are clamped to each other under the rotation of the first clamping roller 43 and the second clamping roller 44 and the transmission of the first sector teeth 452 and the second sector teeth 462, and the seamless steel pipe 6 is clamped in the first pipe clamping groove 4531 and the second pipe clamping groove 4631. Then the second moving cylinder push rod 3312 of the second moving cylinder 331 is retracted forward, so that the holding rotating mechanism 4 and the clamped seamless steel pipe 6 are fed forward into the rolling hole 15 to complete the first rolling. Then the second moving cylinder 331 is retracted. The movable cylinder push rod 3312 is pushed backward, so that the clamping rotating mechanism 4 and the clamped seamless steel pipe 6 are withdrawn from the sharpening hole 15. At the same time, the rotary push cylinder push rod 482 of the aforementioned rotary push cylinder 48 is pushed downward, so that the slide plate 422 and the first clamping roller 43, the second clamping roller 44, the first clamping jaw 45, the second clamping jaw 46 and the seamless steel pipe 6 on the slide plate 422 rotate on the rotating fixed plate 421 with the seamless steel pipe 6 as the center. After the rotation is completed, the second movable cylinder push rod 3312 of the aforementioned second movable cylinder 331 is retracted forward again, so that the clamping rotating mechanism 4 and the clamped seamless steel pipe 6 are sent forward again into the sharpening hole 15 to complete the second pressing. Finally, the second movable cylinder push rod 3312 of the aforementioned second movable cylinder 331 is pushed backward,The clamping and rotating mechanism 4 and the clamped seamless steel pipe 6 are withdrawn from the sharpening hole 15, and the clamping cylinder push rod 473 of the clamping cylinder 471 contracts, causing the first clamping roller 43 and the second clamping roller 44 to rotate. The corresponding first clamping jaws 45 and second clamping jaws 46 open, allowing the sharpened seamless steel pipe 6 to fall from the first clamping groove 4531 and the second clamping groove 4631. The pipe feeder then feeds the seamless steel pipe 6 to be processed into the first clamping jaw 45 and the second clamping jaw 46 again. The above-mentioned sharpening process is repeated in this way, thus completing the entire automated pipe clamping, rotation, and reciprocating pipe feeding and sharpening process, which greatly saves labor costs and greatly improves production safety.

Claims

1. An automatic sharpening machine for seamless steel pipes, comprising a base (5), characterized in that: The base (5) is provided with a sharpening mechanism (1), a sharpening drive mechanism (2) connected to the sharpening mechanism (1), a steel pipe moving mechanism (3) arranged above the sharpening mechanism (1), and a clamping rotation mechanism (4) arranged on the steel pipe moving mechanism (3) and cooperating with the sharpening mechanism (1) for sharpening. The sharpening mechanism (1) comprises a pair of wall panels (11), a power shaft (12) rotatably arranged between the two wall panels (11), a lower sharpening roller (13) rotatably arranged between the two wall panels (11) and located above the power shaft (12), and a lower sharpening roller (13) rotatably arranged between the two wall panels (11) and located above the power shaft (12). 3) above the upper sharpening roller (14), one end of the power shaft (12) is transmission-connected to one end of the lower sharpening roller (13), the other end of the lower sharpening roller (13) is transmission-connected to one end of the upper sharpening roller (14), the other end of the power shaft (12) is transmission-connected to the sharpening drive mechanism (2), the steel pipe moving mechanism (3) includes a fixed bottom plate (31) fixed above the two wall panels (11), a moving bottom plate (32) slidingly arranged on the fixed bottom plate (31) and a moving beam (33) with one end fixed on the moving bottom plate (32) and extending backward, the clamping rotation mechanism (4) is slidingly arranged in the front-back direction The clamping rotating mechanism (4) comprises a clamping rotating base plate (41) slidably arranged below the moving beam (33), a pair of rotating mechanisms (42) fixed symmetrically below the clamping rotating base plate (41), a first clamping roller (43) and a second clamping roller (44) respectively rotatably arranged between the two rotating mechanisms (42), a pair of first clamping claws (45) respectively fixed at both ends of the first clamping roller (43), a pair of second clamping claws (46) respectively fixed at both ends of the second clamping roller (44), and a clamping roller (47) arranged between the two rotating mechanisms (42) and driving the first clamping roller (43) and the second clamping roller (44). 4) a rotating clamping drive mechanism (47), wherein a rotating push cylinder (48) is hingedly connected on the clamping rotating base plate (41) and located above any rotating mechanism (42), and a rotating push cylinder push rod (482) is formed on the rotating push cylinder (48), one end of the rotating push cylinder push rod (482) extends downward and is hingedly connected to the corresponding rotating mechanism (42), a second slide rail (334) is fixed below the moving beam (33), and a pair of clamping rotating base plate sliders (411) sliding on the second slide rail (334) are provided at positions corresponding to the second slide rail (334) on the clamping rotating base plate (41);The rotating mechanism (42) includes a rotating fixed plate (421), a slide plate (422) sliding in an arc shape on the rotating fixed plate (421), a pair of slide plate limiting rods (423) fixed on the rotating fixed plate (421), an arc-shaped sliding groove (4221) is provided on the slide plate (422) at a position corresponding to the slide plate limiting rod (423), and a pair of sliding sleeves (424) are respectively provided at a position between the slide plate limiting rod (423) and the arc-shaped sliding groove (4221).

2. The automatic pointing machine for seamless steel pipes according to claim 1, characterized in that: The wall panels (11) are respectively arranged on a sharpening frame (16) relative to each other, and the sharpening frame (16) is fixed on the base (5). The two ends of the power shaft (12) extend out of the wall panels (11) on both sides and are rotatably supported by a power shaft bearing (122) between the wall panels (11). The two ends of the lower sharpening roller (13) extend out of the wall panels (11) on both sides and are rotatably supported by a lower sharpening roller bearing (134) between the wall panels (11). The two ends of the upper sharpening roller (14) extend out of the wall panels (11) on both sides. The wall panel (11) is rotatably supported by an upper sharpening roller bearing (143) respectively between the wall panel (11), one end of the power shaft (12) is provided with a power shaft gear (121), one end of the lower sharpening roller (13) is provided with a transmission gear (133) meshing with the power shaft gear (121), the other end of the lower sharpening roller (13) is provided with a lower sharpening roller gear (132), and one end of the upper sharpening roller (14) is provided with an upper sharpening roller gear (142) meshing with the lower sharpening roller gear (132).

3. The automatic pointing machine for seamless steel pipes according to claim 1, characterized in that: The rolling tip driving mechanism (2) comprises a motor (21), a first reduction box (22), and a second reduction box (23). The motor (21) is fixed to the first reduction box (22) and is in transmission connection with each other. The first reduction box (22) is provided with a first reduction box output shaft (221). The two ends of the second reduction box (23) are respectively provided with a second reduction box input shaft (231) and a second reduction box output shaft (232). The first reduction box (22) and the second reduction box (23) are respectively fixed to the base (5). The first reduction box output shaft (221) and the second reduction box input shaft (231) are in transmission connection with each other via a first coupling (24). The second reduction box output shaft (232) is in transmission connection with the other end of the power shaft (12) via a second coupling (25).

4. The automatic pointing machine for seamless steel pipes according to claim 1, characterized in that: A pair of first slide rails (311) are fixed on the fixed base plate (31) along the left and right directions, a fixed ear (312) is formed on the upper left side of the fixed base plate (31), a pair of movable base plate sliders (321) are respectively provided at positions corresponding to the first slide rails (311) below the movable base plate (32), a first movable cylinder (322) is fixed at a position between the two first slide rails (311) below the movable base plate (32), one end of the first movable cylinder (322) is formed with a first movable cylinder push rod (3221), the first movable cylinder push rod (3221) is hinged to the fixed ear (312), and the movable beam One end of the movable beam (33) is fixed above the movable base plate (32) and extends backward. A second movable cylinder (331) is fixed in the movable beam (33) through a pair of second movable cylinder seats (3311). The second movable cylinder (331) is arranged in the front-back direction and has a second movable cylinder push rod (3312) formed backward. A movable clearance groove (333) is provided on the left side of the movable beam (33). A movable bracket (332) is fixed on the second movable cylinder push rod (3312). One end of the movable bracket (332) extends out of the movable clearance groove (333) and is bent downward to be fixedly connected to the clamping rotation mechanism (4).

5. The automatic pointing machine for seamless steel pipes according to claim 1, characterized in that: One end of the slide plate limiting rod (423) is respectively formed with a slide plate limiting rod screw (4231), and a slide plate limiting rod screw clearance hole (4211) is respectively provided at a position corresponding to the slide plate limiting rod screw (4231) on the rotating fixed plate (421). After the slide plate limiting rod screw (4231) passes through the corresponding slide plate limiting rod screw clearance hole (4211), it is respectively connected and fixed with a pair of slide plate limiting rod nuts (4232). The slide plate (422) is respectively provided with a clamping roller bearing cavity (4222) at a position corresponding to the first clamping roller (43) and the second clamping roller (44). A clamping roller clearance hole (4223) is provided in the roller bearing cavity (4222), and a first clamping roller bearing (431) and a second clamping roller bearing (441) are respectively provided between the first clamping roller (43) and the second clamping roller (44) and the corresponding clamping roller bearing cavity (4222). A clamping roller bearing cover (425) is provided on the clamping roller bearing cavity (4222), and a circle of clamping roller bearing cover screws (4251) are provided around the clamping roller bearing cover (425). The slide plate (422) is provided with a plurality of screws at the positions corresponding to the clamping roller bearing cover screws (4251). The clamping roller bearing cover fixes the screw hole (4224), and the two ends of the first clamping roller (43) and the second clamping roller (44) respectively pass through the corresponding clamping roller bearing cover (425) and are fixed to the first clamping jaw (45) and the second clamping jaw (46). A first spacer (432) and a second spacer (442) are respectively provided between the first clamping jaw (45) and the second clamping jaw (46) and the first clamping roller bearing (431) and the second clamping roller bearing (441) on the adjacent side. The first spacer (432) and the second spacer (442) are respectively sleeved on the first clamping roller (43) and the second clamping roller (44). One end of the first spacer (432) rests against one side of the first clamping jaw (45), and the other end passes through the corresponding clamping roller bearing cover (425) and rests on the corresponding first clamping roller bearing (431); one end of the second spacer (442) rests against one side of the second clamping jaw (46), and the other end passes through the corresponding clamping roller bearing cover (425) and rests on the corresponding second clamping roller bearing (441); a slide plate hinge ear (4225) is formed at the upper right corner of the slide plate (422), and the slide plate hinge ear (4225) is used to be hinged with the rotary push cylinder push rod (482) of the rotary push cylinder (48).

6. The automatic pointing machine for seamless steel pipes according to claim 5, characterized in that: The first clamping jaw (45) and the second clamping jaw (46) are respectively provided with a first clamping jaw fixing hole (451) and a second clamping jaw fixing hole (461), the first clamping jaw fixing hole (451) and the second clamping jaw fixing hole (461) are respectively sleeved and key-connected on the first clamping roller (43) and the second clamping roller (44), the upper ends of the first clamping jaw (45) and the second clamping jaw (46) are respectively formed with a first sector tooth (452) and a second sector tooth (462) on the side surfaces opposite to each other, the first sector tooth (452) and the second sector tooth (462) are respectively coaxially arranged with the first clamping roller (43) and the second clamping roller (44), the first sector tooth (452) and the second sector tooth (462) are meshed with each other, the middle of the two end portions of the first clamping roller (43) and the second clamping roller (44) are respectively provided with a first clamping roller screw hole (433) and a second clamping roller screw hole (443), the first clamping A first clamping jaw baffle (454) and a second clamping jaw baffle (464) are fixed to the end surfaces of the holding roller (43) and the second clamping roller (44), respectively. The outer diameters of the first clamping jaw baffle (454) and the second clamping jaw baffle (464) are respectively larger than the apertures of the first clamping jaw fixing hole (451) and the second clamping jaw fixing hole (461), and are respectively connected to the corresponding first clamping roller by a first clamping jaw baffle screw (4541) and a second clamping jaw baffle screw (4641). The screw hole (433) is fixedly connected to a second clamping roller screw hole (443); the lower ends of the first clamping jaw (45) and the second clamping jaw (46) are respectively provided with a first clamping jaw pad (453) and a second clamping jaw pad (463) on opposite side surfaces; the first clamping jaw pad (453) and the second clamping jaw pad (463) are respectively provided with a first tube clamping groove (4531) and a second tube clamping groove (4631) that cooperate with each other on opposite side surfaces.

7. The automatic pointing machine for seamless steel pipes according to claim 1, characterized in that: The front and rear sides of the rotary push cylinder (48) are respectively provided with a clamping rotary base support seat (481) fixed on the clamping rotary base (41); the front and rear sides of the middle part of the rotary push cylinder (48) are respectively formed with a rotary push cylinder shaft (4811) rotatably supported in the clamping rotary base support seat (481) on the corresponding side; the clamping rotary base (41) is provided with a rotary push cylinder clearance port (412) at the position of the rotary push cylinder (48); the end of the rotary push cylinder push rod (482) is provided with a rotary push cylinder push rod hinge seat (4821); the rotary push cylinder push rod hinge seat (4821) is hingedly fixed to the corresponding slide plate hinge ear (4225).

8. The automatic pointing machine for seamless steel pipes according to claim 1, characterized in that: The clamping drive mechanism (47) includes a clamping cylinder (471), a pair of clamping cylinder hinge ears (472) formed on one end of the clamping cylinder (471), a clamping cylinder push rod (473) formed on one end of the clamping cylinder (471), and a clamping cylinder push rod hinge seat (474) formed at the end of the clamping cylinder push rod (473), and the middle parts of the first clamping roller (43) and the second clamping roller (44) are respectively formed with a first clamping roller boss (434) and a second clamping roller boss ( 444), a first clamping push plate (4341) is formed on a side surface of the first clamping roller boss (434) away from the second clamping roller (44), and a second clamping push plate (4441) is formed on a side surface of the second clamping roller boss (444) away from the first clamping roller (43), the upper end of the first clamping push plate (4341) is hinged to the clamping cylinder hinge ear (472), and the upper end of the second clamping push plate (4441) is hinged to the clamping cylinder push rod hinge seat (474).

9. The automatic pointing machine for seamless steel pipes according to claim 1, characterized in that: The lower sharpening roller (13) and the upper sharpening roller (14) are formed with a lower sharpening roller eccentric wheel (131) and an upper sharpening roller eccentric wheel (141). The lower sharpening roller eccentric wheel (131) and the upper sharpening roller eccentric wheel (141) are respectively provided with a group of lower sharpening roller grooves (1311) and a group of upper sharpening roller grooves (1411) with different diameters. The lower sharpening roller grooves (1311) and the upper sharpening roller grooves (1411) facing each other have the same diameter and cooperate with each other to form a sharpening hole (15).

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