A cold drawing equipment for processing precision seamless steel pipe

Abstract

The present invention discloses a cold drawing device for processing precision seamless steel pipes, which belongs to the technical field of cold drawing equipment, and comprises: a cold drawing machine, on which a draft seat and an I-shaped rail are installed, and a drawing trolley is slidably connected to the I-shaped rail; a discharging unit, which is rotatably connected to the side of the I-shaped rail; and a driving unit, which is rotatably connected to the discharging unit. When the seamless steel pipe is cold-drawn, the end of the seamless steel pipe is passed through the draft seat by pushing the pipe, and the end is clamped by the clamping mechanism of the drawing trolley, and the drawing trolley is driven to move by a traction chain, so as to cold-draw the seamless steel pipe. By setting a discharging unit and a driving unit, under the cooperation of the discharging unit and the driving unit, when one end of the steel pipe is disengaged from the draft seat for discharging, the steel pipe will fall into the arc-shaped placement groove for intermittent horizontal stay and then roll out, thereby improving the orderliness of the steel pipe discharging.

Description

Technical Field

[0001] The invention relates to the technical field of cold drawing equipment, in particular to a cold drawing equipment for processing precision seamless steel pipes. Background Art

[0002] A Chinese patent (publication number: CN118080590B) discloses a cold drawing device for processing TP316L precision seamless steel pipe; the patent includes: a drafting seat arranged on a drafting seat; a drawing trolley movable along a track; a traction chain for driving the drawing trolley to move; a groove is provided on the upper surface of the drawing trolley, a dovetail groove is provided at one end of the groove, a pair of clamping seats are slidably connected to the inner arms on both sides of the dovetail groove, and a clamping block is connected to the clamping seat for clamping and fixing the steel pipe; a downwardly inclined discharge port is provided at the bottom of the groove, and the steel pipe is discharged from the discharge port after the cold drawing is completed; when the drawing trolley of the patent completes the drawing of the steel pipe, the end of the steel pipe is discharged from one end of the drafting seat, the steel pipe rotates and tilts under its own gravity, and the clamped end of the steel pipe tilts upward, the lifting frame is lifted, and the two clamping seats are driven to slide, so that the distance between the two clamping blocks is increased, the steel pipe is loosened, and the steel pipe is discharged from the discharge port, so as to achieve the purpose of automatic discharge.

[0003] When this cold-drawing equipment for processing precision seamless steel pipes discharges seamless steel pipes, when one end of the steel pipe is separated from the drafting seat and discharged, the steel pipe will fall on the guide plate, causing the steel pipe to slide along the surface of the guide plate to one side of the track. The cold-drawing equipment for processing precision seamless steel pipes in the above technical scheme also has the following defects when in use: since the steel pipe will vibrate at the moment it falls on the guide plate, the steel pipe is prone to tilt on the surface of the guide plate under the action of the vibration, making the steel pipes rolling down from the surface of the guide plate disorderly, which is easy to cause wear on the surface of the steel pipe and increases the difficulty of collecting the steel pipes. Therefore, it is necessary to provide a cold-drawing equipment for processing precision seamless steel pipes to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, an embodiment of the present invention aims to provide a cold drawing device for processing precision seamless steel pipes to solve the problems in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A cold drawing device for processing precision seamless steel pipes, comprising:

[0007] A cold drawing machine, wherein a drafting seat and an I-shaped rail are installed on the cold drawing machine, and a drawing trolley is slidably connected to the I-shaped rail;

[0008] The clamping unit is slidably connected to the cold drawing machine and is used to clamp the seamless steel pipe;

[0009] A lubrication unit, mounted on the drafting seat, is used to lubricate the surface of the seamless steel pipe;

[0010] The oil cleaning unit is rotatably connected to the drafting seat and is used to clean the lubricating oil on the surface of the seamless steel pipe;

[0011] The rotating unit is rotatably connected to the interior of the lubricating unit and connected to the oil cleaning unit, and is used to cooperate with the oil cleaning unit to achieve stirring and oil discharge of the lubricating oil in the lubricating unit;

[0012] The discharging unit is rotatably connected to the side of the I-shaped track and is used to discharge the processed seamless steel pipe;

[0013] The driving unit is rotatably connected to the discharging unit and is used to drive the discharging unit to intermittently stop horizontally and tilt, thereby realizing the discharging of the seamless steel pipe on the discharging unit.

[0014] As a preferred technical solution of the present invention, the clamping unit includes: a slide groove, which is opened on the cold drawing machine and is slidably connected to a support inside. The side of the support is connected to the inner wall of the slide groove through an elastic member, and the support is used to place the seamless steel pipe; an X-shaped frame, which is slidably connected to the surface of the cold drawing machine and is hinged to the side of the support through a pull rod; a clamping roller, which is rotatably connected to the four ends of the X-shaped frame; a C-shaped groove, which is opened on the surface of the cold drawing machine; a sliding column, which is connected to the side surfaces of the two ends of the X-shaped frame away from the support, and two groups of the sliding columns are slidably connected inside the C-shaped groove.

[0015] As a preferred technical solution of the present invention, the lubrication unit includes: a lubrication box installed on the draft seat, an oil drain hole is installed at the bottom of the lubrication box; an oil outlet ring is connected to the draft seat, the seamless steel pipe runs through the inside of the oil outlet ring, and the oil outlet ring is connected to the oil drain hole through a conduit, at least four groups of oil outlet valves are installed on the inner side of the oil outlet ring, and the oil outlet valves are all facing the surface of the seamless steel pipe; a rotating rod is rotatably connected to the inside of the lubrication box, and at least two groups of stirring blades are installed on the surface.

[0016] As a preferred technical solution of the present invention, the oil cleaning unit includes: a groove, which is opened on the draft seat and has a sliding groove inside; a slider, which is slidably connected in the sliding groove, and two groups of sliders are installed, and the side surfaces of the two groups of sliders are connected to the inner wall of the sliding groove through elastic objects; a rotating shaft, which is rotatably connected to the two groups of sliders, and the upper end of the rotating shaft is connected to the lower end of the rotating rod; an oil cleaning wheel, which is installed on the surface of the two groups of rotating shafts, and the oil cleaning wheel is rollingly connected to the surface of the seamless steel pipe.

[0017] As a preferred technical solution of the present invention, the rotating unit includes: a sliding plug, which is slidably connected to the surface of the rotating rod, and the sliding plug is slidably connected to the inside of the oil drain hole at the bottom of the lubrication box; a side frame, which is connected to the rotating rod and has a tilting frame hinged at its end; a small ball, which is installed at the end of the tilting frame away from the side frame; and a connecting rod, one end of which is hinged to the upper side of the sliding plug and the other end is hinged to the middle of the tilting frame.

[0018] As a preferred technical solution of the present invention, the discharging unit includes: a bracket fixed on the outer side of the I-shaped rail, the bracket being rotatably connected to a rotating shaft; a rotating frame installed on the surface of the rotating shaft, a supporting frame being fixed on the rotating frame; a material guide plate rotatably connected to the upper end of the supporting frame, the material guide plate being provided with an arc-shaped placement groove; a gear connected to the surface of the rotating shaft; a rack fixed to the side of the drawing trolley close to the draft seat, the rack and the gear being meshingly connected.

[0019] As a preferred technical solution of the present invention, the driving unit includes: an A-frame, fixed on the surface of the rotating frame, and a driving member is installed on the side; a rotating frame, rotatably connected to the side of the A-frame, and the end is connected to the output end of the driving member; a semicircular wheel, installed on the lower side of the guide plate, an arc groove is opened on the semicircular wheel, the radius of the arc groove is equal to the length of the rotating frame, and the driving member is located at the center of the arc groove; a sliding column, fixed on the end side of the rotating frame away from the A-frame, and the sliding column is slidably connected inside the arc groove; a support plate, fixed on the side of the A-frame, and the semicircular wheel is intermittently placed on the support plate.

[0020] As a preferred technical solution of the present invention, a collecting box is installed on one side of the I-shaped rail close to the bracket, and a placing roller is rotatably connected inside the collecting box.

[0021] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: in the present invention, when the seamless steel pipe is cold drawn, the end of the seamless steel pipe is passed through the drafting seat by pushing the pipe, the end is clamped by the clamping mechanism of the drawing trolley, and the drawing trolley is driven to move by the traction chain, thereby cold drawing the seamless steel pipe.

[0022] During the cold drawing process of the seamless steel pipe, the clamping unit will clamp the seamless steel pipe to achieve the effect of tightening the seamless steel pipe. The lubrication unit will automatically lubricate the seamless steel pipe with the cooperation of the oil cleaning unit and the rotating unit, which can improve the surface quality of the seamless steel pipe and make it smoother. The rotating unit and the oil cleaning unit can respectively mix the lubricating oil in the lubrication unit and clean the oil stains on the surface of the seamless steel pipe after cold drawing, which has the advantage of high lubrication automation.

[0023] During the cold drawing process of seamless steel pipes, the discharging unit will rotate to the bottom of the cold drawn seamless steel pipe under the action of the drawing trolley, and the discharging unit will be in an intermittent horizontal state under the action of the driving unit, so that the discharging unit can place the cold drawn seamless steel pipe. When discharging seamless steel pipes, the discharging unit will tilt to the maximum angle under the action of the driving unit, so that the seamless steel pipes on the discharging unit can roll out for collection. After the seamless steel pipes are discharged, the discharging unit will rotate in the opposite direction to a horizontal state under the action of the driving unit, and maintain an intermittent horizontal state, so that the next group of seamless steel pipes can be placed.

[0024] Compared with the prior art in which the steel pipes directly fall onto the surface of the guide plate and are easily tilted due to vibration, resulting in disordered steel pipes, the embodiments of the present invention provide a discharging unit and a driving unit. With the cooperation of the discharging unit and the driving unit, when one end of the steel pipe is separated from the draft seat for discharging, the steel pipe will fall into the arc-shaped placement groove for intermittent horizontal stay before rolling out, thereby improving the orderliness of the steel pipes after discharging.

[0025] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the overall structure of a cold drawing device for processing precision seamless steel pipes provided in an embodiment of the present invention.

[0027] Figure 2 It is a schematic structural diagram of a drawing trolley provided in an embodiment of the present invention.

[0028] Figure 3 It is a schematic diagram of the structure of the discharging unit provided in an embodiment of the present invention.

[0029] Figure 4 for Figure 2 A partial enlarged view of part A.

[0030] Figure 5 for Figure 3 A partial enlarged view of part B.

[0031] Figure 6 It is a schematic diagram of the structure of the rotating unit provided in an embodiment of the present invention.

[0032] Figure 7 for Figure 3 A partial enlarged view of part C.

[0033] Figure 8 It is a schematic diagram of the structure of a driving unit provided in an embodiment of the present invention.

[0034] Fig. 9It is a structural schematic diagram of the material guide plate provided in an embodiment of the present invention in an intermittent horizontal staying state.

[0035] Fig.10 This is a schematic diagram of the structure of the material guide plate provided in an embodiment of the present invention when it is tilted to the maximum angle.

[0036] Figure numerals: 1, cold drawing machine; 10, seamless steel pipe; 11, drafting seat; 12, I-shaped rail; 13, drawing trolley; 14, traction chain; 15, collection box; 151, placing roller; 2, clamping unit; 21, slide; 22, support; 23, X-shaped frame; 24, pull rod; 25, clamping roller; 26, C-shaped groove; 27, sliding column; 3, lubrication unit; 31, lubrication box; 311, oil inlet valve; 32, guide tube; 33, oil outlet ring; 34, oil outlet valve; 35, rotating rod; 36, stirring blade; 4, oil cleaning unit; 41, Groove; 42, sliding groove; 43, slider; 44, rotating shaft; 45, oil cleaning wheel; 5, rotating unit; 51, sliding plug; 52, side frame; 53, tilting frame; 54, small ball; 55, connecting rod; 6, discharging unit; 61, bracket; 62, rotating shaft; 63, rotating frame; 64, supporting frame; 65, guide plate; 66, arc-shaped placement groove; 67, gear; 68, rack; 7, driving unit; 71, A-frame; 72, driving part; 73, rotating frame; 74, sliding column; 75, semicircular wheel; 76, arc-shaped groove; 77, support plate. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0039] See also Figures 1 to 10 , a cold drawing equipment for processing precision seamless steel pipes, comprising:

[0040] A cold drawing machine 1, on which a drafting seat 11 and an I-shaped rail 12 are installed, and a drawing trolley 13 is slidably connected to the I-shaped rail 12;

[0041] A clamping unit 2 is slidably connected to the cold drawing machine 1 and is used to clamp the seamless steel pipe 10;

[0042] A lubrication unit 3, mounted on the drafting seat 11, is used to lubricate the surface of the seamless steel pipe 10;

[0043] The oil cleaning unit 4 is rotatably connected to the drafting seat 11 and is used to clean the lubricating oil on the surface of the seamless steel pipe 10;

[0044] The rotating unit 5 is rotatably connected to the inside of the lubricating unit 3 and connected to the oil cleaning unit 4, and is used to cooperate with the oil cleaning unit 4 to achieve stirring and oil discharge of the lubricating oil in the lubricating unit 3;

[0045] The discharging unit 6 is rotatably connected to the side of the I-shaped rail 12 and is used to discharge the processed seamless steel pipe 10;

[0046] The driving unit 7 is rotatably connected to the discharging unit 6 and is used to drive the discharging unit 6 to intermittently stay horizontally and tilt, thereby realizing the discharging of the seamless steel pipe 10 on the discharging unit 6.

[0047] In one embodiment of the present invention, when the seamless steel pipe 10 is cold drawn, the end of the seamless steel pipe 10 is passed through the drafting seat 11 by pushing the pipe, the end is clamped by the clamping mechanism of the drawing trolley 13, and the drawing trolley 13 is driven to move by the traction chain 14, thereby cold drawing the seamless steel pipe 10.

[0048] During the cold drawing process of the seamless steel pipe 10, the clamping unit 2 will clamp the seamless steel pipe 10, so as to achieve the effect of tightening the seamless steel pipe 10. The lubrication unit 3 will automatically lubricate the seamless steel pipe 10 in cooperation with the oil cleaning unit 4 and the rotating unit 5, thereby improving the surface quality of the seamless steel pipe 10 and making it smoother. The rotating unit 5 and the oil cleaning unit 4 can respectively mix the lubricating oil in the lubrication unit 3 and clean the oil stains on the surface of the seamless steel pipe 10 after cold drawing, which has the advantage of high lubrication automation.

[0049] During the cold drawing of the seamless steel pipe 10, the discharging unit 6 will rotate to the bottom of the cold drawn seamless steel pipe 10 under the action of the drawing trolley 13, and the discharging unit 6 will be in an intermittent horizontal stay state under the action of the driving unit 7, so that the discharging unit 6 can place the cold drawn seamless steel pipe 10. When discharging the seamless steel pipe 10, the discharging unit 6 will be tilted to the maximum angle under the action of the driving unit 7, so that the seamless steel pipe 10 on the discharging unit 6 can be rolled out for collection. After the seamless steel pipe 10 is discharged, the discharging unit 6 will rotate in the opposite direction to a horizontal state under the action of the driving unit 7, and maintain an intermittent horizontal stay state, so that the next group of seamless steel pipes 10 can be placed.

[0050] In one embodiment of the present invention, Figure 4 and Figure 5 As shown, the clamping unit 2 comprises:

[0051] The chute 21 is provided on the cold drawing machine 1, and a support 22 is slidably connected inside. The side of the support 22 is connected to the inner wall of the chute 21 through an elastic member. The support 22 is used to place the seamless steel pipe 10;

[0052] An X-shaped frame 23 is slidably connected to the surface of the cold drawing machine 1 and is hinged to the side of the support 22 through a tie rod 24;

[0053] Clamping rollers 25 are rotatably connected to the four ends of the X-shaped frame 23;

[0054] C-shaped groove 26, provided on the surface of the cold drawing machine 1;

[0055] The sliding posts 27 are connected to the side surfaces of the two ends of the X-shaped frame 23 away from the support 22 , and the two groups of the sliding posts 27 are slidably connected inside the C-shaped groove 26 .

[0056] In this embodiment, a traction chain 14 is rotatably connected to the I-beam rail 12 for driving the drawing trolley 13 to move. When the seamless steel tube 10 is cold-drawn, the seamless steel tube 10 is first headed to form an end that can be clamped by the drawing trolley 13. After annealing, the end of the seamless steel tube 10 is passed through the draft seat 11 by pushing the tube, and then the end is clamped by the clamping mechanism of the drawing trolley 13, and the drawing trolley 13 is slowly moved by the traction chain 14, thereby cold drawing the seamless steel tube 10.

[0057] When the end of the seamless steel pipe 10 passes through the draft seat 11, the seamless steel pipe 10 is first placed on the surface of the support 22 so that the support 22 can support the seamless steel pipe 10. When the drawing trolley 13 pulls the seamless steel pipe 10 in the draft seat 11, the seamless steel pipe 10 slides on the surface of the support 22, so that the support 22 slides in the chute 21 under the pull of the friction force of the seamless steel pipe 10, and the support 22 compresses the elastic member during the sliding process.

[0058] When the support 22 slides in the slide groove 21 under the pull of the seamless steel pipe 10, the support 22 will pull the X-shaped frame 23 to slide in the direction close to the drafting seat 11 through the pull rod 24, so that the X-shaped frame 23 will drive the two sets of sliding columns 27 at its ends to slide in the C-shaped groove 26, so that the two sets of sliding columns 27 slide from the two ends of the C-shaped groove 26 to the midpoint position. When the two sets of sliding columns 27 slide from the two ends to the midpoint position in the C-shaped groove 26, the X-shaped frame 23 will fold under the action of the two sets of sliding columns 27 and the C-shaped groove 26, and then the X-shaped frame 23 will drive the four sets of clamping rollers 25 on its side to move closer in pairs until the four sets of clamping rollers 25 are in contact with the surface of the seamless steel pipe 10. When the seamless steel pipe 10 continues to be cold drawn, the seamless steel pipe 10 will drive the four groups of clamping rollers 25 to rotate, so that the four groups of clamping rollers 25 clamp the seamless steel pipe 10, achieving the effect of pulling the seamless steel pipe 10 tighter and tighter.

[0059] In one embodiment of the present invention, Figure 4 and Figure 6 As shown, the lubrication unit 3 comprises:

[0060] A lubrication box 31 is installed on the drafting seat 11, and an oil drain hole is installed at the bottom of the lubrication box 31;

[0061] The oil outlet ring 33 is connected to the draft seat 11. The seamless steel pipe 10 runs through the inside of the oil outlet ring 33. The oil outlet ring 33 is connected to the oil discharge hole through the conduit 32. At least four groups of oil outlet valves 34 are installed inside the oil outlet ring 33. The oil outlet valves 34 are all facing the surface of the seamless steel pipe 10.

[0062] The rotating rod 35 is rotatably connected to the inside of the lubrication box 31, and at least two groups of stirring blades 36 are installed on the surface of the rotating rod.

[0063] In this embodiment, an oil inlet valve 311 is provided on the lubrication box 31. The oil inlet valve 311 is opened to add lubricating oil into the lubrication box 31. The stirring blade 36 is used to rotate in the lubrication box 31 driven by the rotating rod 35, so as to achieve mixing and stirring of the lubricating oil in the lubrication box 31.

[0064] During the cold drawing process of the seamless steel pipe 10, the lubricating oil in the lubrication box 31 will flow into the conduit 32 through the oil drain hole, and finally flow into the oil outlet ring 33, and be sprayed onto the surface of the seamless steel pipe 10 through the four sets of oil outlet valves 34 on the inner side of the oil outlet ring 33, thereby reducing the friction of the seamless steel pipe 10 during the cold drawing process, reducing the wear of the equipment, and improving the surface quality of the seamless steel pipe 10 to make it smoother.

[0065] In one embodiment of the present invention, Figure 5 As shown, the oil cleaning unit 4 comprises:

[0066] The groove 41 is formed on the drafting seat 11 and has a sliding groove 42 formed therein;

[0067] The slider 43 is slidably connected in the sliding groove 42, and two groups of sliders 43 are installed, and the sides of the two groups of sliders 43 are connected to the inner wall of the sliding groove 42 through elastic objects;

[0068] A rotating shaft 44 is rotatably connected to the two sets of sliders 43, and the upper end of the rotating shaft 44 is connected to the lower end of the rotating rod 35;

[0069] The oil cleaning wheel 45 is installed on the surface of the two sets of rotating shafts 44, and the oil cleaning wheel 45 is in rolling connection with the surface of the seamless steel pipe 10.

[0070] In this embodiment, after the end of the seamless steel pipe 10 is passed through the drafting seat 11 by pushing the pipe, the end of the seamless steel pipe 10 will pass through the two sets of oil cleaning wheels 45, so that the two sets of oil cleaning wheels 45 will drive the corresponding sliders 43 to slide in the sliding groove 42 through the two sets of rotating shafts 44 under the push of the seamless steel pipe 10, and the two sets of sliders 43 will compress the elastic object during the sliding process in the sliding groove 42. The elastic member and the elastic object can be springs or elastic rubbers, which are not limited here.

[0071] When the drawing trolley 13 pulls the seamless steel pipe 10 to be drawn in the drafting seat 11, the two sets of oil cleaning wheels 45 will respectively drive the two sets of rotating shafts 44 to rotate on the corresponding sliders 43 under the action of the seamless steel pipe 10, so that the lubricating oil on the surface of the cold-drawn seamless steel pipe 10 will be cleaned by mechanical scraping of the oil cleaning wheels 45. Furthermore, a collection pipe can be installed at the bottom of the groove 41, so that the lubricating oil on the surface of the oil cleaning wheel 45 can be automatically collected through the collection pipe at the bottom of the groove 41.

[0072] Since the upper ends of the two sets of rotating shafts 44 are connected to the lower ends of the two sets of rotating rods 35, the two sets of rotating shafts 44 will drive the stirring blades 36 to rotate in the lubrication box 31 through the rotating rods 35 when rotating, so that the stirring blades 36 can mix and stir the lubricating oil in the lubrication box 31, thereby improving the uniformity of the lubricating oil when in use. The oil cleaning wheel 45 is detachably mounted on the surface of the rotating shaft 44, and can be specifically connected to the surface of the rotating shaft 44 by bolts, so that the oil cleaning wheel 45 can be disassembled and cleaned, and the oil cleaning wheel 45 can be replaced, so that the oil cleaning wheel 45 can adapt to seamless steel pipes 10 of different specifications.

[0073] In one embodiment of the present invention, Figure 6 As shown, the rotating unit 5 comprises:

[0074] A sliding plug 51 is slidably connected to the surface of the rotating rod 35, and the sliding plug 51 is slidably connected to the inside of the oil drain hole at the bottom of the lubrication box 31;

[0075] A side frame 52, connected to the rotating rod 35, with a tilt frame 53 hinged at the end;

[0076] A small ball 54 is mounted on the end of the tilt frame 53 away from the side frame 52;

[0077] The connecting rod 55 has one end hinged to the upper side of the sliding plug 51 and the other end hinged to the middle of the tilting frame 53 .

[0078] In this embodiment, when the rotating shaft 44 drives the rotating rod 35 to rotate in the lubrication box 31, the rotating rod 35 will drive the tilting frame 53 and the small ball 54 to rotate synchronously through the side frame 52. When the rotation speed of the small ball 54 gradually increases, the small ball 54 will drive the tilting frame 53 to rotate upward on the side frame 52 under the action of centrifugal force, and then the tilting frame 53 will pull the sliding plug 51 to slide upward on the surface of the rotating rod 35 through the connecting rod 55, so that the surface of the sliding plug 51 will gradually separate from the oil drain hole at the bottom of the lubrication box 31, and then the lubricating oil in the lubrication box 31 will flow into the oil outlet ring 33 through the oil drain hole and the conduit 32, and finally be sprayed to the surface of the seamless steel pipe 10 through the four sets of oil outlet valves 34 on the inner side of the oil outlet ring 33, thereby reducing the friction of the seamless steel pipe 10 during the cold drawing process.

[0079] When the cold drawing of the seamless steel pipe 10 is completed, the seamless steel pipe 10 will not continue to drive the oil cleaning wheel 45 to rotate, so that the rotating shaft 44 and the rotating rod 35 will not continue to rotate, so the small ball 54 also stops rotating, and the tilting frame 53 will rotate downward on the side frame 52 under the action of the gravity of the small ball 54, and then the tilting frame 53 will push the sliding plug 51 to slide downward on the surface of the rotating rod 35 through the connecting rod 55 until the sliding plug 51 and the inner wall of the oil drain hole at the bottom of the lubrication box 31 are tightly fitted, so that the oil drain hole can be closed to prevent the lubricating oil in the lubrication box 31 from continuing to flow out, so that the lubricating oil can be automatically closed after the cold drawing of the seamless steel pipe 10 is completed, and the automation is high.

[0080] In one embodiment of the present invention, Figure 7 As shown, the discharging unit 6 comprises:

[0081] A bracket 61 is fixed on the outer side of the I-shaped rail 12, and a rotating shaft 62 is rotatably connected to the bracket 61;

[0082] A rotating frame 63 is mounted on the surface of the rotating shaft 62, and a supporting frame 64 is fixed on the rotating frame 63;

[0083] A material guide plate 65 is rotatably connected to the upper end of the support frame 64, and the material guide plate 65 is provided with an arc-shaped placement groove 66;

[0084] A gear 67 connected to the surface of the rotating shaft 62;

[0085] The rack 68 is fixed to the side of the drawing carriage 13 close to the drafting seat 11, and the rack 68 is meshedly connected with the gear 67.

[0086] In this embodiment, when the traction chain 14 drives the drawing trolley 13 to move on the I-shaped rail 12, the drawing trolley 13 will drive the rack 68 on its side to move synchronously. When the rack 68 moves to contact the gear 67, the gear 67 will drive the rotating shaft 62 to rotate clockwise on the bracket 61 under the action of the rack 68, and the rotating shaft 62 will drive the rotating frame 63 to rotate synchronously when rotating, so that the rotating frame 63 drives the guide plate 65 to rotate 90 degrees clockwise through the support frame 64, so that the arc placement groove 66 on the guide plate 65 will rotate to the bottom of the cold-drawn seamless steel pipe 10.

[0087] When the seamless steel pipe 10 is completely cold-drawn, the driving unit 7 is turned on, and the driving unit 7 drives the guide plate 65 to rotate on the support frame 64, so that the guide plate 65 is tilted as a whole until the seamless steel pipe 10 in the arc placement groove 66 rolls out of the guide plate 65. Furthermore, a collecting box 15 is installed on the side of the I-shaped track 12 close to the bracket 61, and a placement roller 151 is rotatably connected inside the collecting box 15. The seamless steel pipe 10 rolled out from the surface of the guide plate 65 will slide onto the placement roller 151 in the collecting box 15, realizing the automatic discharge of the seamless steel pipe 10.

[0088] When the next group of seamless steel pipes 10 are cold drawn, the traction chain 14 will drive the drawing trolley 13 to move in the opposite direction on the I-shaped track 12. Similarly, when the drawing trolley 13 slides toward the drafting seat 11, it will drive the rack 68 to slide synchronously until the rack 68 slides to contact the gear 67 again. At this time, the gear 67 will drive the rotating shaft 62 to rotate counterclockwise on the bracket 61 under the action of the rack 68, so that the rotating frame 63 drives the guide plate 65 to rotate counterclockwise 90 degrees through the support frame 64 until the guide plate 65 rotates to the side of the I-shaped track 12 (such as Figure 1 state), so that the pulling trolley 13 can pass through the I-shaped rail 12 smoothly.

[0089] In one embodiment of the present invention, Figure 8 As shown, the driving unit 7 includes:

[0090] The A-shaped frame 71 is fixed on the surface of the rotating frame 63, and a driving member 72 is installed on the side. The driving member 72 can be an electric motor or a pneumatic motor, which is used to drive the rotating frame 73 to rotate stably on the surface of the A-shaped frame 71;

[0091] The rotating frame 73 is rotatably connected to the side of the A-shaped frame 71, and the end thereof is connected to the output end of the driving member 72;

[0092] A semicircular wheel 75 is installed on the lower side of the guide plate 65. The semicircular wheel 75 is provided with an arc groove 76. The radius of the arc groove 76 is equal to the length of the rotating frame 73, and the driving member 72 is located at the center of the arc groove 76.

[0093] The slide post 74 is fixed to the side of the end of the rotating frame 73 away from the A-shaped frame 71, and the slide post 74 is slidably connected inside the arc groove 76;

[0094] The support plate 77 is fixed to the side of the A-shaped frame 71 , and the semicircular wheel 75 is intermittently placed on the support plate 77 .

[0095] In this embodiment, if Fig. 9 As shown, the driving member 72 is turned on, and the output end of the driving member 72 drives the rotating frame 73 to rotate counterclockwise on the side of the A-shaped frame 71. Since the length of the rotating frame 73 is the same as the radius of the arc groove 76, and the driving member 72 is located at the center of the arc groove 76, the rotating frame 73 drives the slide post 74 to slide counterclockwise in the arc groove 76 (slide from the leftmost end to the rightmost end of the arc groove 76). When the slide post 74 rotates to the rightmost point, the slide post 74 slides to the rightmost end of the arc groove 76.

[0096] like Fig.10 As shown, when the rotating frame 73 continues to drive the slide post 74 to rotate counterclockwise, the slide post 74 will drive the guide plate 65 to rotate clockwise at the end of the support frame 64 through the arc groove 76. At the same time, during this process, the slide post 74 will also slide in the opposite direction in the arc groove 76 (slide from the rightmost end to the leftmost end of the arc groove 76).

[0097] When the rotating frame 73 rotates until its (rotating frame 73) extension line passes through the center of the arc groove 76 (such as Fig.10 ), at this time, the guide plate 65 rotates clockwise on the support frame 64 to the maximum angle, and then when the rotating frame 73 continues to drive the sliding column 74 to rotate counterclockwise, the guide plate 65 will rotate in the opposite direction (counterclockwise) on the support frame 64 under the action of the sliding column 74 and the arc groove 76.

[0098] like Fig. 9As shown, when the rotating frame 73 drives the slide post 74 to rotate to the leftmost point, the guide plate 65 rotates to a horizontal state on the support frame 64, and the support plate 77 can support the guide plate 65 through the semicircular wheel 75. When the rotating frame 73 continues to drive the slide post 74 to rotate counterclockwise, the slide post 74 will slide counterclockwise in the arc groove 76. Since the length of the rotating frame 73 is the same as the radius of the arc groove 76, and the driving member 72 is located at the center of the arc groove 76, the positions of the guide plate 65 and the semicircular wheel 75 will not change during the process of the slide post 74 sliding counterclockwise in the arc groove 76, that is, the guide plate 65 will intermittently stay horizontally.

[0099] When the rotating frame 73 drives the slide post 74 to rotate counterclockwise to the rightmost point, the rotating frame 73 continues to drive the slide post 74 to rotate counterclockwise, which is the same as the above working process. Thereafter, the guide plate 65 will rotate clockwise again on the support frame 64 under the action of the slide post 74 and the arc groove 76, and the above working process will be repeated in sequence.

[0100] To sum up, with the cooperation of the rotating frame 73, the sliding column 74 and the arc groove 76, the guide plate 65 will rotate clockwise, counterclockwise and intermittently stay horizontally on the support frame 64, so that the guide plate 65 will drive the arc placement groove 66 to synchronously rotate clockwise, counterclockwise and intermittently stay horizontally.

[0101] During the cold drawing of the seamless steel tube 10, when the rack 68 on the side of the drawing carriage 13 moves to contact the gear 67, the guide plate 65 will rotate 90 degrees under the cooperation of the rack 68 and the gear 67, so that the arc placement groove 66 on the guide plate 65 rotates to the right below the cold drawn seamless steel tube 10. At the same time, during the cold drawing of the seamless steel tube 10, the guide plate 65 is in an intermittent horizontal stay state (such as Fig. 9 state), when one end of the seamless steel pipe 10 is released from the draft seat 11 to be discharged, the seamless steel pipe 10 falls into the arc-shaped placement groove 66, so that the arc-shaped placement groove 66 on the guide plate 65 can stably place the seamless steel pipe 10.

[0102] When the seamless steel pipe 10 is discharged, the guide plate 65 is in a clockwise rotation state (such as Fig.10 ), when the guide plate 65 rotates to the maximum angle, the seamless steel pipe 10 in the arc-shaped placement groove 66 will roll out from the surface of the guide plate 65 and automatically slide into the collection box 15.

[0103] After the seamless steel pipe 10 is discharged, the guide plate 65 is in a counterclockwise rotation state (such as Fig.10 state), until the guide plate 65 rotates counterclockwise to a horizontal state, after which the guide plate 65 will be in an intermittent horizontal stay state, which is convenient for placing the next group of seamless steel pipes 10.

[0104] The working principle of the present invention is: when the seamless steel pipe 10 is cold drawn, the seamless steel pipe 10 is first headed to form an end that can be clamped by the drawing trolley 13. After annealing, the end of the seamless steel pipe 10 is passed through the drafting seat 11 by pushing the pipe, and then the end is clamped by the clamping mechanism of the drawing trolley 13, and the drawing trolley 13 is driven to move by the traction chain 14, so that the seamless steel pipe 10 is cold drawn.

[0105] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0106] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cold drawing equipment for processing precision seamless steel pipes, characterized in that: The cold drawing equipment for processing precision seamless steel pipes comprises: A cold drawing machine (1), wherein a drafting seat (11) and an I-shaped rail (12) are installed on the cold drawing machine (1), and a drawing trolley (13) is slidably connected to the I-shaped rail (12); The clamping unit (2) is slidably connected to the cold drawing machine (1) and is used to clamp the seamless steel pipe (10). The clamping unit (2) comprises: a slide groove (21) which is provided on the cold drawing machine (1) and is internally slidably connected with a support (22). The side of the support (22) is connected to the inner wall of the slide groove (21) through an elastic member. The support (22) is used to place the seamless steel pipe (10). The support (22) is pulled in the slide groove (21) by the friction force of the seamless steel pipe (10). 21); an X-shaped frame (23) slidably connected to the surface of the cold drawing machine (1) and hinged to the side of the support (22) through a pull rod (24); a clamping roller (25) rotatably connected to the four ends of the X-shaped frame (23); a C-shaped groove (26) is provided on the surface of the cold drawing machine (1); a sliding column (27) is connected to the side surfaces of the two ends of the X-shaped frame (23) away from the support (22), and two groups of the sliding columns (27) are slidably connected inside the C-shaped groove (26); A lubrication unit (3) is mounted on the die-drawing seat (11) and is used to lubricate the surface of the seamless steel pipe (10). The lubrication unit (3) comprises: a lubrication box (31) mounted on the die-drawing seat (11), and an oil discharge hole is mounted on the bottom of the lubrication box (31); an oil outlet ring (33) connected to the die-drawing seat (11), and the seamless steel pipe (10) passes through the inside of the oil outlet ring (33), and the oil outlet ring (33) is connected to the oil discharge hole through a conduit (32), and at least four groups of oil outlet valves (34) are mounted on the inner side of the oil outlet ring (33), and the oil outlet valves (34) are all facing the surface of the seamless steel pipe (10); a rotating rod (35) is rotatably connected to the inside of the lubrication box (31), and at least two groups of stirring blades (36) are mounted on the surface; An oil cleaning unit (4) is rotatably connected to the die-drawing seat (11) and is used to clean the lubricating oil on the surface of the seamless steel pipe (10). The oil cleaning unit (4) comprises: a groove (41) provided on the die-drawing seat (11) and provided with a sliding groove (42) inside; a slider (43) slidably connected in the sliding groove (42), and two groups of sliders (43) are installed, and the sides of the two groups of sliders (43) are connected to the inner wall of the sliding groove (42) through elastic objects; a rotating shaft (44) is rotatably connected to the two groups of sliders (43), and the upper end of the rotating shaft (44) is connected to the lower end of the rotating rod (35); an oil cleaning wheel (45) is installed on the surface of the two groups of rotating shafts (44), and the oil cleaning wheel (45) is rollingly connected to the surface of the seamless steel pipe (10); A rotating unit (5) is rotatably connected to the inside of the lubricating unit (3) and connected to the oil cleaning unit (4), and is used to cooperate with the oil cleaning unit (4) to achieve stirring and oil discharge of the lubricating oil inside the lubricating unit (3). The rotating unit (5) comprises: a sliding plug (51) slidably connected to the surface of the rotating rod (35), and the sliding plug (51) is slidably connected to the inside of the oil drain hole at the bottom of the lubricating box (31); a side frame (52) connected to the rotating rod (35) and hinged at the end thereof with a tilting frame (53); a small ball (54) mounted at the end of the tilting frame (53) away from the side frame (52); and a connecting rod (55) having one end hinged to the upper side of the sliding plug (51) and the other end hinged to the middle of the tilting frame (53); A discharging unit (6) is rotatably connected to the side of the I-shaped rail (12) and is used to discharge the processed seamless steel pipe (10); The driving unit (7) is rotatably connected to the discharging unit (6) and is used to drive the discharging unit (6) to intermittently stop horizontally and tilt, thereby realizing the discharging of the seamless steel pipe (10) on the discharging unit (6).

2. The cold drawing equipment for processing precision seamless steel pipe according to claim 1, characterized in that: The discharging unit (6) comprises: A bracket (61) is fixed on the outer side of the I-shaped rail (12), and a rotating shaft (62) is rotatably connected to the bracket (61); A rotating frame (63) is mounted on the surface of the rotating shaft (62), and a supporting frame (64) is fixed on the rotating frame (63); A material guide plate (65) is rotatably connected to the upper end of the support frame (64), and the material guide plate (65) is provided with an arc-shaped placement groove (66); A gear (67) connected to the surface of the rotating shaft (62); The rack (68) is fixed on the side of the drawing carriage (13) close to the die drawing seat (11), and the rack (68) is meshingly connected with the gear (67).

3. The cold drawing equipment for processing precision seamless steel pipe according to claim 2, characterized in that: The driving unit (7) comprises: An A-shaped frame (71) is fixed on the surface of the rotating frame (63) and a driving member (72) is installed on the side thereof; A rotating frame (73) is rotatably connected to the side of the A-shaped frame (71), and an end portion is connected to the output end of the driving member (72); A semicircular wheel (75) is installed on the lower side of the guide plate (65), and an arc groove (76) is formed on the semicircular wheel (75). The radius of the arc groove (76) is equal to the length of the rotating frame (73), and the driving member (72) is located at the center of the arc groove (76); A sliding post (74) is fixed to the side of the end of the rotating frame (73) away from the A-shaped frame (71), and the sliding post (74) is slidably connected inside the arc groove (76); The support plate (77) is fixed on the side of the A-shaped frame (71), and the semicircular wheel (75) is intermittently placed on the support plate (77).

4. The cold drawing equipment for processing precision seamless steel pipe according to claim 3, characterized in that: A collecting box (15) is installed on one side of the I-shaped rail (12) close to the bracket (61), and a placing roller (151) is rotatably connected inside the collecting box (15).

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