CN114160593B - Cold drawing machine for internal thread seamless steel tube - Google Patents
Cold drawing machine for internal thread seamless steel tube Download PDFInfo
- Publication number
- CN114160593B CN114160593B CN202111655967.XA CN202111655967A CN114160593B CN 114160593 B CN114160593 B CN 114160593B CN 202111655967 A CN202111655967 A CN 202111655967A CN 114160593 B CN114160593 B CN 114160593B
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- Prior art keywords
- trolley
- pipe
- feeding
- seat
- centre form
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 44
- 239000010959 steel Substances 0.000 title claims abstract description 44
- 238000010622 cold drawing Methods 0.000 title claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 abstract description 9
- 239000003921 oil Substances 0.000 description 20
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
- B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/27—Carriages; Drives
- B21C1/28—Carriages; Connections of grippers thereto; Grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/32—Feeding or discharging the material or mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/34—Guiding or supporting the material or mandrels
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The utility model provides an internal thread seamless steel pipe cold drawing machine, including tube drawing mechanism, feed mechanism and feeding mechanism, feed mechanism includes the material loading seat and a rotatory material loading frame of establishing on the material loading seat and a rotatory material loading frame motor of drive material loading frame, feeding mechanism fixes the left end tip at the material loading frame, feeding mechanism includes a set of relative setting and at least one that can left and right sides gliding centre form dolly in the fore-and-aft direction interval setting, a set of drive corresponds the gliding centre form dolly cylinder of centre form dolly and a fixed feeding mechanism fixed plate in centre form dolly cylinder, centre form dolly and material loading frame left end respectively, establish the centre form pipe in the centre form dolly, the right-hand member of centre form pipe passes the material loading frame right side and is equipped with a spiral centre form respectively at the tip, the left end of centre form pipe wears out the centre form dolly left and has rotary joint at end connection, the both ends of centre form pipe respectively with spiral centre form and the interior oil circuit intercommunication of rotary joint. The processing efficiency of the cold drawing machine is improved; and the processing difficulty and cost of the internal thread seamless steel tube are reduced.
Description
Technical Field
The invention belongs to the technical field of seamless steel tube processing equipment, and particularly relates to an internal thread seamless steel tube cold drawing machine.
Background
Along with the development of society, the consumption of seamless steel pipes in daily life is larger and larger, and the seamless steel pipes are widely applied in various industries, wherein the application of the internal thread seamless steel pipes is the most wide, compared with the common seamless steel pipes, the internal thread seamless steel pipes are higher in strength and can effectively overcome the laminar flow phenomenon generated when media in the steel pipes slowly flow, but the processing difficulty of the internal thread seamless steel pipes is generally larger, the condition that the internal threads cannot meet the processing requirement often occurs, in addition, the steel pipes are required to be matched with a spiral internal mold in the feeding process and drawn through a cold drawing die and a drawing trolley, the traditional cold drawing machine cannot realize the rapid feeding and drawing of the steel pipes, so that the processing efficiency of the internal thread seamless steel pipes is very low, and the processing requirement of manufacturers cannot be met all the time.
In view of the above, it is necessary to design a cold drawing machine for an internally threaded seamless steel pipe, which has high machining efficiency and simple structure, can alternately feed materials and automatically feed and draw pipes. To this end, the applicant has made an advantageous design, and the technical solutions described below are produced in this context.
Disclosure of Invention
The invention aims to provide an internal thread seamless steel tube cold drawing machine, which is beneficial to improving a feeding structure of the cold drawing machine so that steel tube feeding can be alternately performed to improve production efficiency, and is beneficial to improving a feeding mechanism of the cold drawing machine so that the steel tube can be automatically matched with a spiral internal mold to feed the steel tube, thereby further improving processing efficiency.
The invention accomplishes the task by this, a kind of internal thread seamless steel tube cold drawing machine, including a tube drawing mechanism, a feed mechanism and a feeding mechanism, the said tube drawing mechanism locates at the right side of the feed mechanism, the said feeding mechanism sets up the left side of the feed mechanism, the characteristic is: the feeding mechanism comprises a feeding seat, a feeding frame and a feeding frame motor, wherein the feeding frame is rotationally arranged on the feeding seat, the feeding frame motor is used for driving the feeding frame to rotate, the feeding mechanism is fixed at the left end part of the feeding frame, the feeding mechanism comprises at least one inner mould trolley which is oppositely arranged up and down and is respectively arranged at intervals in the front-back direction and can slide left and right, a group of inner mould trolley cylinders which are respectively used for driving the corresponding inner mould trolley to slide, and a feeding mechanism fixing plate which is used for fixing the inner mould trolley cylinders, the inner mould trolley and the left end of the feeding frame, an inner mould pipe is rotationally arranged in the inner mould trolley, the right end of the inner mould pipe penetrates through the feeding frame rightward and is respectively provided with a spiral inner mould matched with a tube drawing mechanism at the end part, the left end of the inner mould pipe penetrates out of the inner mould trolley leftwards, a rotary joint is connected at the end part, and the inner mould pipe is a hollow steel pipe, and the two ends of the inner mould pipe are respectively communicated with an oil way in the spiral inner mould and the rotary joint.
In a specific embodiment of the invention, the tube drawing mechanism comprises a tube drawing seat and a trolley seat arranged on the right side of the tube drawing seat, wherein a cold drawing die holder is fixed on the tube drawing seat, cold drawing dies are respectively arranged at positions corresponding to the spiral internal dies on the cold drawing die holder, and a tube drawing trolley is arranged on the trolley seat in a left-right sliding manner.
In another specific embodiment of the present invention, the feeding seat is provided with at least two pairs of supporting rotating rollers at intervals along the left-right direction, the feeding frame includes a set of rotating supporting plates arranged at intervals, a rotating driving plate positioned between the two rotating supporting plates, and a set of feeding frame beams for respectively connecting and fixing the rotating supporting plates and the rotating driving plate, the left end of the feeding frame is fixed with a mounting plate through the feeding frame beams, the feeding mechanism is fixed on the left side surface of the mounting plate, a guide post is fixed on the feeding mechanism fixing plate at the position relative to the front and rear of each inner die trolley, the right end of the guide post extends rightward and is fixedly connected with the mounting plate, the inner die trolley is respectively positioned between the mounting plate and the feeding mechanism fixing plate and slides on the corresponding guide post, through holes are respectively arranged on the rotating supporting plates, the rotating driving plate and the mounting plate at the positions corresponding to the inner die pipes, the feeding frame is fixed on the feeding seat and the motor at the position below the rotating driving plate, and the feeding frame and the motor shaft is meshed with the rotating driving plate.
In a further specific embodiment of the invention, a positioning frame is also arranged below the mounting plate, the mounting plate is rotatably supported on the positioning frame, a positioning cylinder is arranged on the left side of the positioning frame, and a positioning cylinder column of the positioning cylinder extends rightwards and is matched with the mounting plate to realize positioning.
In still another specific embodiment of the present invention, the inner mold trolley includes a trolley housing, the inner mold pipe is disposed in the trolley housing, the inner mold pipe and the trolley housing are rotationally fixed through a set of inner mold pipe bearings, a trolley housing cover plate is fixed at the right end of the trolley housing, an adjusting seat is formed right on the trolley housing cover plate, an adjusting block is connected to the adjusting seat in a threaded manner, the inner mold pipe sequentially passes through the trolley housing cover plate, the adjusting seat and the adjusting block and then extends right, the left end of the inner mold pipe is rotationally fixed in an inner rotary joint, a rotary joint bearing is disposed between the inner mold pipe and the rotary joint and at positions of both ends of the rotary joint, an oil receiving pipe communicated with the rotary joint and the inner mold pipe cavity is fixed on the outer side wall of the rotary joint, a sealing ring is also respectively disposed at positions of both sides of the oil receiving pipe in the rotary joint, a hinge lug is further formed on the outer side wall of the trolley housing, the inner mold trolley forms a hinge lug right after passing through the trolley housing cover plate, and the inner mold pipe forms a hinge lug corresponding to the end of the inner mold trolley cylinder.
In a more specific embodiment of the present invention, a sliding sleeve is respectively formed on the front side and the rear side of the trolley shell.
In a further specific embodiment of the present invention, a spiral inner mold joint fixed with the inner mold pipe is formed at the left end of the spiral inner mold, a spiral inner mold oil passage communicated with the inner mold pipe is formed in the spiral inner mold joint, the spiral inner mold oil passage extends rightward, and a circle of oil dividing passages communicated with the spiral inner mold oil passage are arranged at the outer surface of the threads of the spiral inner mold at intervals.
By adopting the structure, the invention has the beneficial effects that: firstly, the structure of feeding frames for rotation and alternate feeding is adopted, so that the processing efficiency of the cold drawing machine is greatly improved; and secondly, the internal mold trolley is adopted to push the spiral internal mold and the steel pipe to automatically draw the pipe, so that the processing efficiency is further improved, and the processing difficulty and cost of the internal thread seamless steel pipe are greatly reduced.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention.
Fig. 2 is a schematic diagram of the front structure of the internal mold trolley according to the present invention.
Fig. 3 is a schematic side view of the internal mold trolley according to the present invention.
Fig. 4 is a schematic structural view of the spiral inner mold according to the present invention.
In the figure: 1. tube drawing mechanism, 11, tube drawing seat, 111, cold drawing die holder, 112, cold drawing die, 12, saddle of trolley, 121, tube drawing trolley; 2. the feeding mechanism comprises a feeding seat, a supporting rotary roller, a feeding frame, a rotary supporting plate and a feeding frame, wherein the feeding seat is arranged at the upper end of the feeding mechanism, the rotary supporting plate is arranged at the lower end of the feeding mechanism, the rotary supporting plate is arranged at the upper end of the feeding seat, the rotary supporting roller is arranged at the upper end of the feeding mechanism, the rotary supporting plate is arranged at the upper end of the feeding seat, the rotary 222, a feeding frame beam, 223, a rotary driving disc, 224, a mounting disc, 23, a feeding frame motor, 231 and a motor gear; 3. feeding mechanism, 31, inner mold trolley, 311, inner mold tube, 3111, spiral inner mold, 31111, spiral inner mold joint, 31112, spiral inner mold oil duct, 31113, oil distribution duct, 3112, rotary joint, 31121, rotary joint bearing, 31122, sealing ring, 31123, oil receiving tube, 312, trolley housing, 3121, trolley housing cover plate, 31211, adjusting seat, 313, adjusting block, 314, inner mold tube bearing, 315, hinge lug, 316, sliding sleeve, 32, feeding mechanism fixing plate, 321, guide post, 33, inner mold trolley cylinder, 331 inner mold trolley cylinder column. 4. Positioning frame, 41, positioning cylinder, 411, positioning cylinder column; 5. and (3) a steel pipe.
Detailed Description
The following detailed description of specific embodiments of the invention, while given in connection with the accompanying drawings, is not intended to limit the scope of the invention, and any changes that may be made in the form of the inventive concepts described herein, without departing from the spirit and scope of the invention.
In the following description, all concepts related to the directions or azimuths of up, down, left, right, front and rear are based on the position of fig. 1, and thus should not be construed as limiting the technical solution provided by the present invention.
Referring to fig. 1, the invention relates to an internal thread seamless steel tube cold drawing machine, which comprises a tube drawing mechanism 1, a feeding mechanism 2 and a feeding mechanism 3, wherein the tube drawing mechanism 1 is positioned on the right side of the feeding mechanism 2, and the feeding mechanism 3 is arranged on the left side of the feeding mechanism 2.
The technical key points of the technical scheme provided by the invention are as follows: the feeding mechanism 2 comprises a feeding seat 21, a feeding frame 22 rotatably arranged on the feeding seat 21, and a feeding frame motor 23 for driving the feeding frame 22 to rotate, the feeding mechanism 3 is fixed at the left end part of the feeding frame 22, the feeding mechanism 3 comprises a group of inner mold trolleys 31 which are arranged oppositely up and down and are respectively arranged at intervals in the front-rear direction and can slide left and right, a group of inner mold trolley cylinders 33 for driving the corresponding inner mold trolleys 31 to slide respectively, and a feeding mechanism fixing plate 32 for fixing the inner mold trolley cylinders 33, the inner mold trolleys 31 and the left end of the feeding frame 22, an inner mold pipe 311 is respectively and rotatably arranged in the inner mold trolleys 31, the right end of the inner mold pipe 311 passes through the feeding frame 22 rightward and is respectively provided with a spiral inner mold 3111 matched with the pipe pulling mechanism 1 at the end part, the left end of the inner mold pipe 311 passes through the inner mold trolleys 31 leftward and is connected with a rotary joint 3112 at the end part, and the inner mold pipe 311 is hollow and is respectively communicated with the spiral oil passages 3112 at both ends. In this embodiment, the feeding mechanism 3 is disposed vertically opposite to each other, and three groups of feeding mechanisms are disposed at intervals in the front-rear direction, so as to satisfy the cold drawing of three steel pipes.
Further, the tube drawing mechanism 1 includes a tube drawing seat 11 and a trolley seat 12 disposed on the right side of the tube drawing seat 11, a cold drawing die holder 111 is fixed to the tube drawing seat 11, cold drawing dies 112 are respectively disposed on the cold drawing die holders 111 at positions corresponding to the spiral inner dies 3111, and a tube drawing trolley 121 is slidably disposed on the trolley seat 12.
Further, the feeding seat 21 is provided with at least two pairs of supporting rotating rollers 211 at intervals along the left-right direction, the feeding frame 22 comprises a set of rotating supporting plates 221 arranged at intervals, a rotating driving plate 223 positioned between the two rotating supporting plates 221 and a set of feeding frame beams 222 respectively connecting and fixing the rotating supporting plates 221 and the rotating driving plates 223, a mounting plate 224 is fixed at the left end of the feeding frame 22 through the feeding frame beams 222, the feeding mechanism 3 is fixed on the left side surface of the mounting plate 224, a guide post 321 is respectively fixed at the front-rear position of the feeding mechanism fixing plate 32 relative to each inner mold trolley 31, the right end of the guide post 321 extends rightward and is fixedly connected with the mounting plate 224, the inner mold trolley 31 is positioned between the mounting plate 224 and the feeding mechanism fixing plate 32 and slides on the corresponding guide post 321 respectively, through holes are respectively arranged at positions corresponding to the rotating supporting plates 221, the rotating driving plates 223 and the mounting plate 224 on the motor shaft 23, the feeding frame motor 23 is fixed on the motor shaft 21 and is meshed with the motor shaft 223 at the position of the motor shaft 23, and the position of the motor shaft 223 is meshed with the motor shaft 23.
Further, a positioning frame 4 is further provided below the mounting plate 224, the mounting plate 224 is rotatably supported on the positioning frame 4, a positioning cylinder 41 is provided on the left side of the positioning frame 4, and a positioning cylinder column 411 of the positioning cylinder 41 extends rightward and cooperates with the mounting plate 224 to realize positioning.
Referring to fig. 2 in combination with fig. 3, the inner mold trolley 31 includes a trolley housing 312, the inner mold pipe 311 is disposed in the trolley housing 312, the inner mold pipe 311 is rotatably fixed to the trolley housing 312 through a set of inner mold pipe bearings 314, a trolley housing cover plate 3121 is fixed to the right end of the trolley housing 312, an adjusting seat 31211 is formed right on the trolley housing cover plate 3121, an adjusting block 313 is threadedly connected to the adjusting seat 31211, the inner mold pipe 311 sequentially passes through the trolley housing cover plate 3121, the adjusting seat 31211 and the adjusting block 313 and then extends to the right, the left end of the inner mold pipe 311 is rotatably fixed to the inner rotary joint 3112, a rotary joint bearing 31121 is disposed between the inner mold tube 311 and the rotary joint 3112 and at the positions of the left and right ends of the rotary joint 3112, an oil receiving tube 31123 is fixed on the outer sidewall of the rotary joint 3112 and is connected to the inside of the rotary joint 3112 and the inner mold tube 311, a sealing ring 31122 is disposed in the rotary joint 3112 at the positions of the left and right sides of the oil receiving tube 31123, a hinge lug 315 is further formed on the outer sidewall of the trolley housing 312, an inner mold trolley cylinder column 331 is formed rightward from the inner mold trolley cylinder 33, and the ends of the inner mold trolley cylinder column 331 are hinged to the hinge lugs 315 on the corresponding inner mold trolley 31. The trolley housing 312 is formed with a sliding sleeve 316 at both front and rear sides thereof, and the sliding sleeve 316 slides on the corresponding guide post 321.
Referring to fig. 1 in combination with fig. 4, a spiral inner mold joint 31111 fixed to the inner mold tube 311 is formed at the left end of the spiral inner mold 3111, a spiral inner mold oil passage 31112 communicating with the inner mold tube 311 is formed in the spiral inner mold joint 31111, the spiral inner mold oil passage 31112 extends rightward, and a circle of oil dividing passages 31113 communicating with the spiral inner mold oil passage 31112 are spaced apart from the outer surface of the spiral inner mold 3111.
With continued reference to fig. 1 to 4, when the cold drawing machine is required to work, the cold drawing machine is in the state shown in fig. 1, the steel pipes 5 are respectively sleeved on the inner mold tube 311 of the feeding mechanism 3 positioned above from right to left and pass through the feeding frame 22 until the inner part of one end of the steel pipe 5 subjected to shrinkage is clamped with the spiral inner mold 3111, then the positioning cylinder 411 of the positioning cylinder 41 is separated from the mounting plate 224 and drives the feeding frame motor 23 to work, the motor gear 231 on the feeding frame motor 23 drives the rotary driving plate 223 and the whole feeding frame 22 to rotate 180 degrees on the supporting rotary roller 211, then the positioning cylinder 411 of the positioning cylinder 41 is locked with the mounting plate 224 again, at the moment, the steel pipe 5 passing through the feeding frame 22 rotates to the position opposite to the cold drawing mold 112 below, at this time, the lower inner die trolley cylinder 33 pushes the inner die trolley 31 and the inner die tube 311 and the spiral inner die 3111 to slide rightward through the inner die trolley cylinder column 331, the aforementioned spiral inner die 3111 pushes the steel tube 5 into the cold drawing die 112 until the adjusting block 313 abuts against the mounting plate 224, the aforementioned tube drawing trolley 121 clamps one end of the steel tube 5 at the right end of the cold drawing die 112 and draws the steel tube 5 rightward, in this process, the aforementioned oil receiving tube 31123 continuously introduces lubricating oil into the inner die tube 311, the lubricating oil enters the steel tube 5 through the aforementioned spiral inner die oil duct 31112 and the branch oil duct 31113, the aforementioned spiral inner die 3111 rotates in the steel tube 5 and presses the internal thread until the steel tube 5 is completely separated from the spiral inner die 3111, the aforementioned inner die trolley cylinder 33 pulls the inner die trolley 31 and the inner die tube 311 and the spiral inner die 3111 to slide leftward through the inner die small Che Qigang column 331 after the tube drawing action is completed to return the spiral inner die 3111 to the original position, and then repeating the above processes to realize the purposes of alternately feeding and automatic feeding and drawing of the steel pipes 5.
Claims (6)
1. The utility model provides an internal thread seamless steel pipe cold drawing machine, includes a tube drawing mechanism (1), a feed mechanism (2) and a feeding mechanism (3), tube drawing mechanism (1) is located the right side of feed mechanism (2), feeding mechanism (3) set up the left side at feed mechanism (2), its characterized in that: the feeding mechanism (2) comprises a feeding seat (21) and a feeding frame (22) and a feeding frame motor (23) which are rotatably arranged on the feeding seat (21), wherein the feeding mechanism (3) is fixed at the left end part of the feeding frame (22), the feeding mechanism (3) comprises a group of inner mould trolleys (31) which are oppositely arranged up and down and are respectively arranged at intervals in the front-back direction and can slide left and right, a group of inner mould trolley cylinders (33) which are respectively used for driving the corresponding inner mould trolleys (31) to slide, and a feeding mechanism fixing plate (32) which is used for fixing the inner mould trolley cylinders (33), the inner mould trolleys (31) and the left end of the feeding frame (22), an inner mould pipe (311) is respectively rotatably arranged at the right end part of the inner mould trolley (31) and penetrates through the feeding frame (22), a spiral inner mould (3111) matched with the pipe pulling mechanism (1) is respectively arranged at the end part, and the left end part of the inner mould pipe (311) is respectively connected with the inner mould trolley (3112) in a spiral oil way through which is rotatably connected with the left end part (3112; the internal mold trolley (31) comprises a trolley shell (312), the internal mold pipe (311) is arranged in the trolley shell (312), the internal mold pipe (311) and the trolley shell (312) are rotationally fixed through a group of internal mold pipe bearings (314), a trolley shell cover plate (3121) is fixed at the right end of the trolley shell (312), an adjusting seat (31211) is formed right by the trolley shell cover plate (3121), an adjusting block (313) is connected on the adjusting seat (31211) in a threaded manner, the internal mold pipe (311) sequentially penetrates through the trolley shell cover plate (3121), the adjusting seat (31211) and the adjusting block (313) and then extends right, the left end of the internal mold pipe (311) is rotationally fixed in a rotary joint (3112), a rotary joint bearing (31121) is respectively arranged between the internal mold pipe (311) and the rotary joint (3112) and at the positions of the left end and the right end of the rotary joint (3112), an external side wall of the rotary joint (3112) is fixedly connected with the internal mold pipe (31123) at the position of the rotary joint (31123), and the internal mold pipe (31123) is further connected with the internal mold pipe (31123) at the position of the rotary joint (31123), the inner mold trolley cylinder (33) rightwards forms an inner mold trolley cylinder column (331), and the end parts of the inner mold trolley cylinder column (331) are respectively hinged with the hinging lugs (315) on the corresponding inner mold trolley (31).
2. An internally threaded seamless steel pipe cold drawing machine according to claim 1, wherein the pipe drawing mechanism (1) comprises a pipe drawing seat (11) and a trolley seat (12) arranged on the right side of the pipe drawing seat (11), a cold drawing mold seat (111) is fixed on the pipe drawing seat (11), cold drawing molds (112) are respectively arranged at positions corresponding to the spiral inner molds (3111) on the cold drawing mold seat (111), and a pipe drawing trolley (121) is arranged on the trolley seat (12) in a left-right sliding manner.
3. The cold drawing machine for internally threaded seamless steel pipes as set forth in claim 1, wherein the feeding seat (21) is provided with at least two pairs of supporting rotary rollers (211) at intervals along the left-right direction, the feeding frame (22) comprises a set of rotary supporting plates (221) arranged at intervals, a rotary driving plate (223) arranged between the two rotary supporting plates (221) and a set of feeding frame cross beams (222) respectively connecting and fixing the rotary supporting plates (221) and the rotary driving plate (223), the left end of the feeding frame (22) is fixedly provided with a mounting plate (224) through the feeding frame cross beams (222), the feeding mechanism (3) is fixed on the left side surface of the mounting plate (224), a guide pillar (321) is respectively fixed on the feeding mechanism fixing plate (32) at a position corresponding to the front and rear of each inner mold trolley (31), the right end of the guide pillar (321) extends rightward and is fixedly connected with the mounting plate (224), the inner mold trolley (31) is respectively arranged between the mounting plate (224) and the feeding mechanism fixing plate (32) and the guide pillar (321) and the corresponding to the rotary driving plate (221) at the corresponding position of the inner mold trolley (311), the feeding frame motor (23) is fixed on the feeding seat (21) and is positioned below the rotary driving disc (223), and a motor gear (231) meshed with the rotary driving disc (223) is formed on a motor shaft of the feeding frame motor (23).
4. A cold drawing machine for internally threaded seamless steel pipes according to claim 3, characterized in that a positioning frame (4) is further provided below the mounting plate (224), the mounting plate (224) is rotatably supported on the positioning frame (4), a positioning cylinder (41) is provided on the left side of the positioning frame (4), and a positioning cylinder column (411) of the positioning cylinder (41) extends rightward and cooperates with the mounting plate (224) to realize positioning.
5. An internally threaded seamless steel pipe cold drawing machine according to claim 1, wherein the trolley housing (312) is formed with a sliding sleeve (316) on each of the front and rear sides thereof.
6. The cold drawing machine for the internally threaded seamless steel pipe as claimed in claim 1, wherein a spiral inner die joint (31111) fixed with the inner die pipe (311) is formed at the left end of the spiral inner die (3111), a spiral inner die oil duct (31112) communicated with the inner die pipe (311) is formed in the spiral inner die joint (31111), the spiral inner die oil duct (31112) extends rightward, and a circle of oil dividing duct (31113) communicated with the spiral inner die oil duct (31112) is formed at the thread outer surface of the spiral inner die (3111) at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111655967.XA CN114160593B (en) | 2021-12-31 | 2021-12-31 | Cold drawing machine for internal thread seamless steel tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111655967.XA CN114160593B (en) | 2021-12-31 | 2021-12-31 | Cold drawing machine for internal thread seamless steel tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114160593A CN114160593A (en) | 2022-03-11 |
| CN114160593B true CN114160593B (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111655967.XA Active CN114160593B (en) | 2021-12-31 | 2021-12-31 | Cold drawing machine for internal thread seamless steel tube |
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| CN (1) | CN114160593B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117564126B (en) * | 2023-12-20 | 2024-05-17 | 娄底市鼎成管业有限公司 | Composite forming process of wear-resistant alloy pipe |
Citations (13)
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|---|---|---|---|---|
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| CN108246940A (en) * | 2018-01-19 | 2018-07-06 | 苏州钢特威钢管有限公司 | Cold drawing steel tube internal screw forming device |
| CN109290381A (en) * | 2018-11-22 | 2019-02-01 | 张家港嘉园钢铁制品有限公司 | High-accuracy cold-drawn unit for steel pipe |
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| GB626846A (en) * | 1945-02-02 | 1949-07-22 | Head Wrightson & Co Ltd | Improvements in or relating to tube and rod production |
| GB970276A (en) * | 1961-01-26 | 1964-09-16 | Schwermaschb Heinrich Rau Wild | Feed device for tube drawing machines |
| DE1652599A1 (en) * | 1967-03-15 | 1971-03-11 | Nippon Kokan Kk | Method of forming thread-like internal ribs in a pipe |
| JPS60137526A (en) * | 1983-12-27 | 1985-07-22 | Hitachi Cable Ltd | Form rolling machine |
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| CN101642781A (en) * | 2009-08-21 | 2010-02-10 | 常州常宝精特钢管有限公司 | Production method of water screen optimization trapezoidal internal threaded pipe of W-shaped flame boiler |
| CN102189139A (en) * | 2011-03-23 | 2011-09-21 | 常州瑞源钢管有限公司 | Cold-drawing inner mold regulating and positioning device for internal-thread seamless steel pipe |
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| CN202316603U (en) * | 2011-11-30 | 2012-07-11 | 常州盛德无缝钢管有限公司 | Cold drawing internal die adjusting and positioning device for rifled seamless steel tubes |
| CN204122496U (en) * | 2014-07-04 | 2015-01-28 | 扬州鑫昊重型机械有限公司 | Riffled tube cold-drawing trolley |
| CN108246940A (en) * | 2018-01-19 | 2018-07-06 | 苏州钢特威钢管有限公司 | Cold drawing steel tube internal screw forming device |
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| CN114160593A (en) | 2022-03-11 |
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