CN113967666A - Steel pipe cold-drawing equipment - Google Patents

Steel pipe cold-drawing equipment Download PDF

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Publication number
CN113967666A
CN113967666A CN202111585461.6A CN202111585461A CN113967666A CN 113967666 A CN113967666 A CN 113967666A CN 202111585461 A CN202111585461 A CN 202111585461A CN 113967666 A CN113967666 A CN 113967666A
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CN
China
Prior art keywords
cold
steel pipe
cavity
rail
cold drawing
Prior art date
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Granted
Application number
CN202111585461.6A
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Chinese (zh)
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CN113967666B (en
Inventor
陈华姣
刘嵩嵩
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Ningbo Yongxin Steel Tube Co ltd
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Ningbo Yongxin Steel Tube Co ltd
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Application filed by Ningbo Yongxin Steel Tube Co ltd filed Critical Ningbo Yongxin Steel Tube Co ltd
Priority to CN202111585461.6A priority Critical patent/CN113967666B/en
Publication of CN113967666A publication Critical patent/CN113967666A/en
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Publication of CN113967666B publication Critical patent/CN113967666B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02Dies; Selection of material therefor; Cleaning thereof
    • B21C3/06Dies; Selection of material therefor; Cleaning thereof with adjustable section
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16Metal 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
    • B21C1/22Metal 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16Metal 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
    • B21C1/32Feeding or discharging the material or mandrels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16Metal 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
    • B21C1/34Guiding or supporting the material or mandrels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C43/00Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
    • B21C43/02Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00Cooling, heating or lubricating drawing material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Abstract

The application discloses steel pipe cold drawing equipment which comprises a feeding rail, a discharging rail and a die device, wherein the die device is arranged between the feeding rail and the discharging rail, the feeding device arranged on the feeding rail is suitable for rotationally pushing a steel pipe to be cold drawn to penetrate through the die device and extend to the discharging rail, and the discharging device arranged on the discharging rail is suitable for dragging the steel pipe to be cold drawn to rotationally and completely pass through the die device so as to finish cold drawing; the die device comprises a shell, and an adjusting mechanism and a cold-drawing die component which are arranged in the shell, wherein a cold-drawing cavity is arranged in the cold-drawing die component, a steel pipe to be cold-drawn passes through the cold-drawing cavity in a rotating manner to finish cold-drawing, and the adjusting mechanism is suitable for adjusting the size of the cold-drawing cavity. The beneficial effect of this application: the size of the cold-drawing cavity is adjusted by installing the adjusting mechanism in the die device, so that the requirements for different cold-drawing sizes of the steel pipe can be met.

Description

Steel pipe cold-drawing equipment
Technical Field
The application relates to the field of pipe machining equipment, in particular to cold-drawing equipment for a steel pipe.
Background
The cold drawing equipment for steel pipe is used in drawing ferrous and non-ferrous metal bar at normal temperature and secondary processing of hot rolled and extruded pierced billet, and is one main processing equipment for producing small diameter, precise, thin wall and high mechanical performance pipe.
When the existing steel pipe cold-drawing equipment is used for cold-drawing steel pipes, the sizes of the cold-drawn steel pipes are basically fixed, and even steel pipes with different sizes can be cold-drawn, complicated die replacement steps are required, so that the existing steel pipe cold-drawing equipment is inconvenient to use and operate when the steel pipes with different sizes are cold-drawn, and a large amount of time is wasted in the replacement steps. Therefore, a steel pipe cold-drawing device which can conveniently adjust the cold-drawing size is urgently needed.
Disclosure of Invention
An object of this application is to provide a steel pipe cold drawing equipment, can be convenient adjust the size of cold drawing.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: a steel pipe cold drawing device comprises a feeding rail, a discharging rail and a die device, wherein the die device is arranged between the feeding rail and the discharging rail, the feeding rail is used for placing a steel pipe to be cold drawn, the feeding rail is also provided with the feeding device, the feeding device is suitable for rotationally pushing the steel pipe to be cold drawn to penetrate through the die device and extend to the discharging rail, the discharging rail is provided with the discharging device, and the discharging device is suitable for dragging the steel pipe to be cold drawn to rotationally and completely pass through the die device so as to finish cold drawing; the die device comprises a shell, an adjusting mechanism and a cold drawing die component, wherein the cold drawing die component and the adjusting mechanism are installed in the shell, a cold drawing cavity is formed in the cold drawing die component, a steel pipe to be subjected to cold drawing passes through the cold drawing cavity in a rotating mode to finish cold drawing, and the adjusting mechanism is suitable for adjusting the size of the cold drawing cavity so that the cold drawing cavity can be subjected to cold drawing in different sizes.
Preferably, the number of the cold drawing die parts is multiple, the cold drawing die parts are linearly arranged at intervals, the cold drawing cavities formed among the cold drawing die parts are different in size, and the sizes of the cold drawing cavities are sequentially reduced along the direction from the feeding rail to the discharging rail, so that the steel pipe can be cold drawn in a large size through the multi-stage cold drawing cavities.
Preferably, the cold-drawing die component comprises a plurality of cold-drawing die components which are uniformly distributed in a circumferential mode, so that the cold-drawing cavities are formed among the cold-drawing die components; the cold-drawing die assembly is connected with the shell through a rotary guide structure, and the adjusting mechanism is suitable for driving the cold-drawing die assembly to move towards the direction far away from the cold-drawing cavity, so that the cold-drawing die assembly synchronously rotates through the rotary guide structure, and the size of the cold-drawing cavity can be adjusted.
Preferably, the cold-drawing die assembly comprises cold-drawing rollers and a connecting frame, the side walls of the cold-drawing rollers are provided with arc-shaped cold-drawing grooves, and when the cold-drawing rollers are uniformly distributed on the circumference, the cold-drawing grooves are mutually combined to form the cold-drawing cavity; the cold drawing roller with the link rotates to be connected, the link with adjustment mechanism connects, simultaneously the link with pass through between the inside wall of casing rotatory uide bushing structure is connected, so that adjustment mechanism drive the link drives the cold drawing roller still rotates when removing, and then can be right the size in cold drawing chamber is adjusted.
Preferably, the rotary guide structure comprises a guide post and a guide sleeve, the guide post is fixedly connected with the connecting frame, and the guide sleeve is fixedly connected with the inner wall of the shell; the side parts of the guide columns are symmetrically provided with guide pins, and the inner side walls of the guide sleeves are symmetrically provided with inclined guide grooves; when the guide post is connected with the guide sleeve, the guide pin is matched with the guide groove, so that when the guide post is driven by the adjusting mechanism to move axially along the guide sleeve, the guide post can rotate through the matching of the guide pin and the guide groove, and the size of the cold-drawing cavity can be adjusted.
Preferably, the centers of two ends of the shell are provided with openings, and the side wall of each opening is provided with a supporting seat in the shell; the adjusting mechanism comprises a plurality of adjusting plates, a telescopic device and a rotating sleeve; the adjusting plates are uniformly distributed on the circumference and correspond to the cold-drawing die assemblies, and limiting holes are formed in the adjusting plates so that the adjusting plates are rotatably connected with limiting grooves formed in the guide columns through the limiting holes; the rotating sleeve is rotatably arranged on the supporting seat, and the end part of the adjusting plate is hinged with the rotating sleeve through a first hinge plate; the telescopic device is fixedly arranged, and the output end of the telescopic device is hinged with the rotating sleeve through a second hinged plate, so that the rotating sleeve is driven by the telescopic device to rotate around the supporting seat, and then the adjusting plate is driven to drive the cold drawing die assembly to move.
Preferably, it is a pair of to rotate the cover, the telescoping device is also a pair of, rotate the cover correspond rotate install in the casing both ends the supporting seat, the both ends of regulating plate are all passed through first articulated slab with correspond it is articulated to rotate the cover, two the telescoping device with correspond the hookup location that rotates the cover in the extending direction projection symmetry of regulating plate, and then the telescoping device drive during the regulating plate, two the telescoping device perpendicular to the component force of cold drawing die assembly moving direction offsets each other, thereby can improve adjustment mechanism adjusts stability during cold drawing chamber size.
Preferably, the end parts of the feeding rails close to the die device are symmetrically provided with slide rails, and the slide rails are all provided with cleaning mechanisms; clearance mechanism includes bent axle, connecting plate and clearance portion, the bent axle be vertical with the slide rail rotates to be connected, clearance portion with slide rail sliding connection, two form the clearance chamber that is used for clearing up the steel pipe surface between the clearance portion, clearance portion with pass through between the bent axle the connecting plate articulates, so that the bent axle drives under the drive of motor clearance portion is followed the slide rail carries out reciprocating motion, and then can improve the clearance effect of clearance chamber to the steel pipe.
Preferably, the cleaning part comprises a first support plate, a plurality of scrapers and a plurality of springs, the first support plate is arc-shaped, the scrapers are slidably arranged on one side of the first support plate and are uniformly distributed along the circumferential direction of the first support plate, so that the cleaning cavity is formed between the two first support plates through the scrapers; the spring is connected between the scraper and the first supporting plate, so that elastic sliding connection is formed between the scraper and the first supporting plate, and an inclined surface is arranged at one end of the scraper, which is far away from the die device, so that the scraper is driven to slide along the first supporting plate through extrusion of the inclined surface and the steel pipe, and the size of the cleaning cavity is adjusted to meet the requirements of the steel pipes with different sizes; the other side of first backup pad is fixed with the slider, first backup pad be suitable for through the spout that sets up on the slider with slide rail sliding connection, the slider still be suitable for through the connecting plate with the bent axle is connected, so that first backup pad is in the drive of bent axle is followed the slide rail carries out reciprocating sliding.
Preferably, the oiling mechanisms are symmetrically arranged on the feeding rail on one side, close to the die device, of the cleaning mechanism; the oiling mechanism comprises an oil cylinder and an oiling part, the oiling part and the oil cylinder are fixedly connected with the feeding rail, so that an oiling cavity for oiling the cleaned steel pipe is formed between the two oiling parts, and the oiling part is communicated with the oil cylinder through an oil inlet pipe; the oil cylinder is suitable for being connected with the crankshaft through a piston rod, so that cold drawing oil in the oil tank is pumped into the oil coating portion by the oil cylinder under the driving of the crankshaft, and the cold drawing oil is coated on a steel pipe passing through the oil coating cavity.
Preferably, the oiling part comprises bristles and a second support plate, the second support plate is arc-shaped and is fixedly connected with the feeding rail, and the bristles are uniformly distributed on one side of the second support plate, so that the oiling cavity is formed between the two second support plates through the bristles; the inside of the second supporting plate is a cavity, the cavity is communicated with the oil inlet pipe, and a plurality of oil seepage holes communicated with the cavity are formed in the side wall, where the bristles are installed, of the second supporting plate, so that cold drawing oil can be adhered to the bristles through the oil seepage holes after entering the cavity through the oil inlet pipe.
Preferably, the blanking device is a blanking trolley which comprises a trolley body, a clamping mechanism and a rotating device, the trolley body is movably mounted on the blanking rail, a mounting plate is rotatably arranged on the trolley body, the clamping mechanism is mounted on the mounting plate, and the clamping mechanism is suitable for clamping the end part of the steel pipe, so that the steel pipe can be dragged to synchronously move along the blanking rail through the movement of the trolley body; the rotating device is arranged on the trolley body, and the output end of the rotating device is connected with the mounting plate, so that the mounting plate is driven by the rotating device to rotate, and the steel pipe is driven to synchronously rotate in the traction and movement process.
Compared with the prior art, the beneficial effect of this application lies in:
(1) compared with traditional fixed-size cold drawing equipment, the die device of the application is connected with the cold drawing die component through the matching of the adjusting mechanism and the cold drawing die component, so that the size of a cold drawing cavity in the cold drawing die component can be adjusted within a certain range under the driving of the adjusting mechanism, the requirements of different cold drawing sizes of a steel pipe are met, and the applicability of the steel pipe cold drawing equipment of the application is further improved.
(2) Cold drawing chamber size regulation carries out automatically regulated through adjustment mechanism in this application, and the size in cold drawing chamber infinitely variable control in certain extent, compares traditional scaling-off mould mode of changing, and convenient to use security is high, can satisfy the processing of the nonstandard size in industry.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic exploded view of the mold apparatus of the present invention.
Fig. 3 is a schematic view of the structure of a cold drawn die part of the present invention.
FIG. 4 is a schematic front view of a cold-drawn die assembly according to the present invention.
FIG. 5 is a schematic diagram of the adjustment of the cold drawn chamber of the present invention.
Fig. 6 is a schematic view of the internal structure of the housing of the present invention.
Fig. 7 is a schematic structural view of an adjusting mechanism in the present invention.
Fig. 8 is a front sectional view of the die assembly of the present invention.
Fig. 9 is a schematic structural diagram of a cleaning mechanism and an oiling mechanism in the invention.
FIG. 10 is a schematic view of the cleaning mechanism of the present invention in a front view.
FIG. 11 is a schematic view of the cleaning part according to the present invention.
Fig. 12 is a schematic structural view of the oiling mechanism in the front view direction.
Fig. 13 is a schematic view of the structure of the oiling section in the present invention.
Fig. 14 is a schematic structural diagram of the traction trolley in the drawing.
In the figure: the feeding rail 11, the sliding rail 110, the discharging rail 12, the mold device 2, the housing 21, the supporting seat 211, the opening 2110, the guiding sleeve 212, the guiding groove 2120, the cold drawing mold part 22, the cold drawing mold assembly 220, the cold drawing cavity 2200, the cold drawing roller 2201, the connecting frame 2202, the guiding column 2203, the limiting groove 2204, the guiding pin 2205, the cold drawing groove 2210, the adjusting mechanism 23, the telescopic device 231, the rotating sleeve 232, the hinged seat 2321, the extending seat 2322, the adjusting plate 233, the limiting hole 2330, the first hinged plate 234, the second hinged plate 235, the feeding device 31, the discharging device 32, the trolley body 321, the mounting plate 322, the positioning seat 3210, the clamping part 323, the hydraulic cylinder 324, the rotating device 325, the cleaning mechanism 4, the cleaning cavity 400, the crankshaft 41, the connecting plate 42, the cleaning part 43, the first supporting plate 431, the scraping plate 432, the inclined plane 4320, the spring 433, the sliding block 434, the sliding groove 4340, the oiling mechanism 5, the oiling cavity 500, the piston rod 51, the oil cylinder 52, the connecting plate 431, the oil cylinder 52, the oil coating mechanism 5, the oil coating mechanism 32, the oil coating mechanism and the oil coating mechanism, The oiling part 53, the second support plate 531, the oil inlet pipe 5310 and the bristles 532.
Detailed Description
The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.
It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
In one preferred embodiment of the present application, as shown in fig. 1 to 14, a steel pipe cold drawing apparatus includes a feeding rail 11, a discharging rail 12 and a mold device, wherein the feeding rail 11 and the discharging rail 12 are both stably installed on the ground, and the mold device 2 is fixedly installed between the feeding rail 11 and the discharging rail 12. Be used for placing the steel pipe of treating the cold drawing on the material loading rail 11, the mobilizable loading attachment 31 of installing of one end of keeping away from mold device 2 on the material loading rail 11 to make loading attachment 31 pass mold device 2 and extend material unloading rail 12 through the removal that follows material loading rail 11 to promote the steel pipe of treating the cold drawing, and at the in-process that loading attachment 31 promoted the steel pipe removal, loading attachment 31 can also drive the steel pipe and rotate, in order to cooperate the steel pipe to carry out the cold drawing process when mold device 2. The blanking device 32 is movably mounted on the blanking rail 12, so that the blanking device 32 can move along the blanking rail 12 in a direction away from the die device 2 by clamping the steel pipe to pass through the end of the die device 2, and further drag the steel pipe to be cold-drawn to completely pass through the die device 2 to complete cold drawing, and can also drive the steel pipe to synchronously rotate when the blanking device 32 drags the steel pipe to move, so as to facilitate cold drawing of the steel pipe. The die device 2 comprises a shell 21, an adjusting mechanism 23 and a cold-drawing die component 22, wherein the cold-drawing die component 22 and the adjusting mechanism 23 are both installed in the shell 21, a cold-drawing cavity 2200 is formed in the cold-drawing die component 22, so that a steel pipe to be subjected to cold drawing rotationally passes through the cold-drawing cavity 2200 to complete cold drawing, and the adjusting mechanism 23 is used for driving the cold-drawing die component 22 to adjust the size of the cold-drawing cavity 2200, so that the cold-drawing cavity 2200 can meet the requirement of cold drawing of the steel pipe with different cold-drawing sizes.
In this embodiment, the feeding device 31 is a conventional technique in the art, and since the feeding device 31 only needs to drive the end of the steel pipe to be cold drawn to pass through the die device 2, the stroke of the feeding device 31 on the feeding rail 11 is short, so that the feeding device 31 can rotate along the feeding rail 11 to push the steel pipe to move through screw rod driving, hydraulic driving, transmission chain driving or other driving methods with similar functions.
In this embodiment, the blanking device 32 is also a conventional technology in the art, and since the blanking device 32 needs to completely drag the steel pipe for cold drawing, the stroke of the blanking device 32 moving along the blanking rail 12 is long, and therefore, the screw rod driving or hydraulic driving mode is not suitable, and the driving can be performed by the transmission chain driving mode.
Specifically, the feeding device 31 and the discharging device 32 are both driven by a transmission chain, so that the feeding device 31 and the discharging device 32 are the same or similar in structure. Taking the structure of the blanking device 32 as an example, as shown in fig. 14, the blanking device 32 includes a trolley body 321, a mounting plate 322, a clamping mechanism and a rotating device 325, wherein the trolley body 321 is mounted on the blanking rail 12, one end of the trolley body 321 far away from the mold device 2 is mounted with a connecting part, the connecting part is used for connecting with a transmission chain mounted on the blanking rail 12, so that the trolley body 321 is driven by the transmission chain to move along the blanking rail 12 in a direction far away from the mold device 2, thereby realizing the traction of the steel pipe. Meanwhile, the trolley body 321 can also move along the blanking rail 12 under the driving of the driving wheel, so that the steel pipe can be conveniently reset to the end part of the blanking rail 12 close to the die device 2 after being dragged. The upper end of dolly body 321 is fixed with positioning seat 3210, mounting panel 322 rotates with positioning seat 3210 to be connected, fixture installs in mounting panel 322, fixture is used for carrying out the centre gripping to the steel pipe, rotary device 325 fixed mounting is in dolly body 321, and rotary device 325's output is connected with mounting panel 322, so that can drive mounting panel 322 through rotary device 325 and drive fixture and rotate, and then whole unloader 32 is when towing the steel pipe under the drive of driving chain, the steel pipe is by the fixture centre gripping, rotary device 325 can drive the steel pipe of centre gripping to rotate simultaneously.
It is understood that the connecting portion is conventional in the art, and the structure and the connection manner with the transmission chain are well known in the art, and therefore, the detailed description thereof is omitted. In this embodiment, the rotating device 325 may be a motor, a rotating cylinder, a rotating hydraulic cylinder, or other devices with similar functions.
In this embodiment, the structure of the clamping mechanism has various structures, for example, as shown in fig. 14, the clamping mechanism includes a clamping portion 323 and a hydraulic cylinder 324, the clamping portion 323 is of a clamp structure, and an output end of the hydraulic cylinder 324 is connected to the clamping portion 323, so that the clamping portion 323 is driven to open or close by the telescopic motion of the output end of the hydraulic cylinder 324, thereby clamping and releasing the end of the steel pipe.
In one embodiment of the present application, as shown in fig. 2, there are a plurality of cold drawing die parts 22, each cold drawing die part 22 is linearly spaced from another cold drawing die part 22, and the cold drawing cavities 2200 formed by the cold drawing die parts 22 are different in size. Specifically, along the direction from the feeding rail 11 to the discharging rail 12, the size of each cold-drawing cavity 2200 corresponding to each cold-drawing die part 22 is sequentially reduced, so that the steel pipe can be subjected to multi-stage cold drawing after passing through the die device 2, and further large-size cold drawing of the steel pipe can be realized.
In this embodiment, if the number of the cold drawing cavities 2200 is only one, when the steel pipe is subjected to cold drawing, the single cold drawing size of the steel pipe is in a range, which may be assumed to be T, and if the size of one steel pipe needs to be reduced by N times of T, the steel pipe needs to be subjected to cold drawing at least N times, and the size of the cold drawing cavity 2200 needs to be reduced after each cold drawing is completed. If the number of cold drawing cavities 2200 in the die device 2 is N and the size difference between adjacent cold drawing cavities 2200 is T, the steel pipe is cold drawn at least N/N times.
For example, the single cold drawing size of the steel pipe is T5 mm, and the diameter of the steel pipe needs to be reduced by 2cm, namely T four times; the steel pipe needs to be cold drawn at least four times. If the number n of the cold-drawn cavities 2200 in the die device 2 is four, and the size difference between the adjacent cold-drawn cavities 2200 is 5mm, the diameter of the steel pipe can be reduced by 2cm only by cold-drawing once.
Specifically, the number of cold drawing members 22 may be set according to actual requirements, for example, as shown in fig. 2, if the number of cold drawing members 22 is four, then there are four cold drawing cavities 2200 in the mold device 2, whose sizes are changed in sequence.
It is understood that the size difference between adjacent cold drawn cavities 2200 may be the same or different, and may be set as desired.
In one embodiment of the present application, as shown in fig. 3, 4 and 8, the cold drawing die part 22 includes a plurality of cold drawing die assemblies 220, and the plurality of cold drawing die assemblies 220 are uniformly distributed in a circumferential manner such that the cold drawing die assemblies 220 mutually surround each other to form a cold drawing cavity 2200. Meanwhile, each cold-drawing die assembly 220 is connected with the shell 21 through a rotary guide structure, the adjusting mechanism 23 is also connected with each cold-drawing die assembly 220, so that each cold-drawing die assembly 220 can move towards the direction far away from the cold-drawing cavity 2200 under the driving of the adjusting mechanism 23, and in the moving process, the cold-drawing die assemblies 220 can also synchronously rotate through the rotary guide structure, and further the size of the cold-drawing cavity 2200 can be adjusted.
Specifically, as shown in fig. 3 and 4, the cold drawing die assembly 220 includes a cold drawing roller 2201 and a connecting frame 2202, wherein the side wall of the cold drawing roller 2201 is provided with cold drawing grooves 2210 with arc-shaped cross sections, and when the cold drawing rollers 2201 are uniformly distributed circumferentially, the cold drawing grooves 2210 are mutually surrounded and combined to form a cold drawing cavity 2200. Meanwhile, the cold drawing roller 2201 is rotatably connected with the connecting frame 2202, the connecting frame 2202 is connected with the adjusting mechanism 23, and meanwhile, the connecting frame 2202 is connected with the inner side wall of the shell 21 through the rotary guide sleeve 212 structure, so that the adjusting mechanism 23 drives the connecting frame 2202 to drive the cold drawing roller 2201 to move and simultaneously can rotate through the rotary guide structure, and further the size of the cold drawing cavity 2200 can be adjusted.
It will be appreciated that the cold drawn chamber 2200 is sized away as shown in FIG. 5.
As shown in fig. 5 (a), the cold drawing roll 2201 is in a completely horizontal state, a projection of a cold drawing groove 2210 on the cold drawing roll 2201 is an arc segment, a circle diameter corresponding to the arc segment is R, a value of R at this time is assumed to be 10cm, an expansion angle corresponding to the arc segment is α, and a value of α at this time is assumed to be 80 °.
After the cold drawing roll 2201 is deflected in a unidirectional and continuous manner by a certain angle, two continuous deflection angle positions are taken, as shown in (b) and (c) of fig. 5, the projection of the cold drawing groove 2210 on the cold drawing roll 2201 still generates an arc segment; the corresponding circle diameters of the two arc sections are R respectively1And R2At this time R1Has a value of 6cm, R2Has a value of 4cm m, and the corresponding expansion angles of the two arc segments are respectively alpha1And alpha2In which α is1Has a value of 82 DEG, alpha2The value of (d) is 75 °.
As can be seen from the schematic diagram in fig. 5, as the deflection angle of the cold drawing roller 2201 increases, the diameter of the circle corresponding to the circular arc segment thereof gradually decreases, and the size adjustment of the cold drawing chamber 2200 can be realized by driving the cold drawing roller 2201 to move along the radial direction of the cold drawing chamber 2200 and deflecting itself.
Meanwhile, as the cold drawing rollers 2201 deflect, the expansion angle corresponding to the arc segment does not change too much, so that when the cold drawing cavity 2200 is formed, the subsequent adjustment requirement can be met by proper superposition of the cold drawing grooves 2210 on each cold drawing roller 2201 along the circumferential direction of the cold drawing cavity 2200, namely the minimum expansion angle alpha corresponding to the cold drawing grooves 2210minThe product of the number x of the cold drawing rolls 2201 may be 360 ° or more.
The specific number of the cold drawing rollers 2201 can be set according to the corresponding setting size of the cold drawing groove 2210, for example, as shown in fig. 3 and 4, each cold drawing die part 22 comprises six cold drawing die assemblies 220, namely six cold drawing rollers 2201, and the six cold drawing rollers 2201 are mutually distributed in a circumferential manner to form a cold drawing cavity 2200. However, in the actual installation process, the size of the cold drawing rollers 2201 may cause interference when the cold drawing rollers 2201 are circumferentially distributed, so that the six cold drawing rollers 2201 are divided into two adjacent groups of three, the three cold drawing rollers 2201 in each group are circumferentially distributed, the cold drawing rollers 2201 between the two groups are staggered, and the cold drawing grooves 2210 of the two groups are mutually surrounded and overlapped to form the complete cold drawing cavity 2200 in the cold drawing direction of the steel pipe.
It is understood that the different sizes of the cold drawing cavity 2200 corresponding to each cold drawing die part 22 can be realized by the cold drawing grooves 2210 with different sizes, and also can be realized by different deflection angles of the cold drawing rollers 2201. When the cold drawing roller 2201 is at a deflection angle, if the steel pipe is dragged by the feeding device 32 to move in a non-rotating manner, the cold drawing roller 2201 generates a torsion force in the circumferential direction to the steel pipe, and further the steel pipe is continuously subjected to the torsion force in the cold drawing process to influence the cold drawing quality of the steel pipe, so that the direction of the rotation force and the direction of the traction force can be combined into a resultant force tangent to the cold drawing groove 2210 through the rotating traction steel pipe, and further the resultant force of the steel pipe in the cold drawing process is ensured to be opposite to the extrusion force of the cold drawing roller 2201.
In this embodiment, as shown in fig. 3, 4, 6 and 8, the rotary guiding structure includes a guiding column 2203 and a guiding sleeve 212, the guiding column 2203 is fixedly connected to the connecting frame 2202, and the guiding sleeve 212 is fixedly connected to the inner wall of the housing 21. The guide column 2203 is symmetrically provided with guide pins 2205 at the side part thereof, the guide sleeve 212 is symmetrically provided with inclined guide slots 2120 at the inner side wall thereof in the radial direction, and the guide column 2203 is slidably connected with the guide sleeve 212 so that the guide pins 2205 and the guide slots 2120 can be matched. Therefore, when the cold drawing die assembly 220 is driven by the adjusting mechanism 23 to move, the guide column 2203 can slide along the guide sleeve 212, and simultaneously, the guide column 2203 can also rotate through the cooperation of the guide pin 2205 and the guide groove 2120, so that the movement and the rotation of the cold drawing roller 2201 can be synchronously performed, and the size adjustment of the cold drawing cavity 2200 can be met.
In this embodiment, as shown in fig. 6 to 8, the center of both ends of the housing 21 is provided with an opening 2110 so that a steel pipe can penetrate the entire die device 2 through the opening 2110. A support seat 211 is arranged on the side wall of the opening 2110 in the shell 21; the adjusting mechanism 23 comprises a plurality of adjusting plates 233, a telescopic device 231 and a rotating sleeve 232; the number of the adjusting plates 233 is equal to the number of the cold drawing die assemblies 220 included in the cold drawing die part 22, and a plurality of the adjusting plates 233 are circumferentially and uniformly distributed and correspond to the respective cold drawing die assemblies 220. The adjusting plate 233 is provided with a limiting hole 2330, so that the adjusting plate 233 is rotatably connected with a limiting groove 2204 provided on the guide column 2203 through the limiting hole 2330. The rotating sleeve 232 is rotatably mounted on the supporting seat 211, and the side wall of the rotating sleeve 232 is provided with hinge seats 2321 corresponding to the number of the adjusting plates 233, so that the end of the adjusting plate 233 is hinged to the corresponding hinge seat 2321 of the rotating sleeve 232 through the first hinge plate 234. Telescoping device 231 is fixed to be set up, and the output of telescoping device 231 is articulated through second articulated slab 235 and the extension seat 2322 that rotates the setting of cover 232 lateral wall, can increase the arm of force that the cover 232 was rotated in the telescoping device 231 drive through extending seat 2322, and then conveniently rotate cover 232 and rotate around supporting seat 211 under the drive of telescoping device 231, thereby can drive each regulating plate 233 and drive corresponding cold drawing die assembly 220 and remove along cold drawing chamber 2200's radial, and realize the size adjustment to cold drawing chamber 2200 under rotary guide structure's the cooperation.
In this embodiment, as shown in fig. 6 to 8, the supporting seats 211 are disposed at the sides of the two openings 2110, and the rotating sleeves 232 are paired and respectively connected to the two supporting seats 211, so that both ends of each adjusting plate 233 can be hinged to the corresponding rotating sleeve 232 through the first hinge plate 234. The number of the telescopic devices 231 is also a pair and is connected with the corresponding rotating sleeve 232, the connecting positions of the two telescopic devices 231 and the corresponding rotating sleeve 232 are symmetrically projected in the extending direction of the adjusting plate 233, and further when the telescopic devices 231 drive the rotating sleeve 232, the rotating directions of the two rotating sleeves 232 are opposite, so that the two ends of the adjusting plate 233 are subjected to opposite driving forces, and the component forces of the two driving forces in the axial direction of the guide column 2203 are superposed, and the component forces perpendicular to the moving direction of the cold drawing die assembly 220 are mutually offset, thereby improving the stability of the adjusting mechanism 23 in adjusting the size of the cold drawing cavity 2200.
In one embodiment of the present application, as shown in fig. 9 and 10, the feeding rail 11 is symmetrically provided with sliding rails 110 at the end portions close to the mold device 2, and the cleaning mechanisms 4 are mounted on the sliding rails 110. Clearance mechanism 4 includes bent axle 41, connecting plate 42 and clearance portion 43, bent axle 41 is vertical and slide rail 110 rotates to be connected, clearance portion 43 and slide rail 110 sliding connection, form the clearance chamber 400 that is used for clearing up the steel pipe surface between two clearance portions 43, it is articulated through connecting plate 42 between clearance portion 43 and the bent axle 41, the lower part installation motor of material loading rail 11, the output and one of them bent axle of motor are connected, carry out the transmission through the band pulley between two bent axles simultaneously, so that bent axle 41 can drive clearance portion 43 through connecting plate 42 under the drive of motor and carry out reciprocating motion along slide rail 110, and then can improve the clearance effect of clearance chamber 400 to the steel pipe.
It is understood that rust or other impurities may be adhered to the surface of the steel pipe before the steel pipe is cold drawn, and the adhered substances on the surface of the steel pipe can be cleaned by the cleaning part 43 before the steel pipe is cold drawn. Driven by the crankshaft 41, the two cleaning portions 43 can reciprocate synchronously or in a staggered manner, and the cleaning stroke of the steel pipe can be increased regardless of the moving mode, so that the surface cleaning effect of the steel pipe is improved.
Specifically, as shown in fig. 11, the cleaning portion 43 includes a first support plate 431, a plurality of scrapers 432 and a plurality of springs 433, the first support plate 431 is arc-shaped, the plurality of scrapers 432 are slidably disposed on one side of the first support plate 431, and the plurality of scrapers 432 are uniformly distributed along the circumferential direction of the first support plate 431, so that a cleaning cavity 400 is formed between the two first support plates 431 through the scrapers 432. A spring 433 is further connected between the scraper 432 and the first support plate 431, so that an elastic sliding connection is formed between the scraper 432 and the first support plate 431, and meanwhile, an inclined surface 4320 is arranged at one end of the scraper 432, which is far away from the die device 2, so that when the steel pipe passes through the cleaning cavity 400 under the driving of the feeding device 31, the steel pipe can be extruded by the inclined surface 4320 at the end part to drive the scraper 432 to slide along the radial direction of the first support plate 431, and then the size of the cleaning cavity 400 can be automatically adjusted according to the diameter of the steel pipe so as to meet the steel pipes with different sizes. A sliding block 434 is fixed on the other side of the first supporting plate 431, the first supporting plate 431 can be slidably connected with the sliding rail 110 through a sliding slot 4340 arranged on the sliding block 434, and meanwhile, the sliding block 434 is also connected with the crankshaft 41 through a connecting plate 42, so that the first supporting plate 431 can slide back and forth along the sliding rail 110 under the driving of the crankshaft 41.
In one embodiment of the present application, as shown in fig. 9 and 12, the oiling mechanism 5 is further symmetrically installed on the feeding rail 11 on one side of the cleaning mechanism 4 close to the mold device 2. The oiling mechanism 5 comprises an oil cylinder 52 and an oiling part 53, wherein the oiling part 53 and the oil cylinder 52 are fixedly connected with the feeding rail 11, so that an oiling cavity 500 for smearing cold drawing oil on the surface of the cleaned steel pipe is formed between the two oiling parts 53. The oil coating portion 53 is communicated with the oil cylinder 52 through an oil inlet pipe 5310, and the oil cylinder 52 is connected with the crankshaft 41 through the piston rod 51, so that cold drawing oil in the oil tank can be pumped into the oil coating portion 53 by the oil cylinder 52 under the driving of the crankshaft 41, and the cold drawing oil can be coated on a steel pipe passing through the oil coating chamber 500.
It can be understood that the friction between the steel pipe and the cold drawing roller 2201 can be reduced by applying the cold drawing oil on the surface of the steel pipe, and then the cold drawing can be performed conveniently and in a labor-saving manner.
Specifically, as shown in fig. 13, the oiling part 53 includes bristles 532 and second support plates 531, the second support plates 531 are arc-shaped, the second support plates 531 are fixedly connected to the feeding rail 11, and the bristles 532 are uniformly distributed on one side of the second support plates 531, so that the oiling cavity 500 is formed between the two second support plates 531 through the bristles 532. The inside of the second support plate 531 is a cavity, the cavity is communicated with the oil inlet pipe 5310, the side wall of the second support plate 531 where the bristles 532 are installed is provided with a plurality of oil penetration holes communicated with the cavity, so that after cold drawing oil enters the cavity through the oil inlet pipe 5310, the cold drawing oil can be adhered to the bristles 532 through the oil penetration holes, and then the steel pipe is coated with the cold drawing oil through contact with the bristles 532 when passing through the oil coating cavity 500.
The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. The utility model provides a steel pipe cold drawing equipment which characterized in that includes:
a blanking rail;
the steel tube cold drawing device comprises a feeding rail, a cold drawing device and a cold drawing device, wherein the feeding rail is used for placing a steel tube to be cold drawn;
the die device is arranged between the feeding rail and the discharging rail and comprises a cold drawing die part, an adjusting mechanism and a shell; the cold drawing die component and the adjusting mechanism are both arranged in the shell, a cold drawing cavity for cold drawing the steel pipe is arranged in the cold drawing die component, and the adjusting mechanism is suitable for driving the cold drawing die component to adjust the size of the cold drawing cavity;
the feeding device is arranged on the feeding rail and is suitable for pushing a steel pipe to be cold drawn to rotatably pass through the cold drawing cavity and extend to the discharging rail; and
and the blanking device is arranged on the blanking rail and is suitable for dragging the steel pipe to be cold drawn to rotatably and completely pass through the cold drawing cavity.
2. A steel pipe cold-drawing apparatus as defined in claim 1 wherein: the cold drawing die component is provided with a plurality of cold drawing die components, and the cold drawing die components are linearly arranged at intervals; and the size of the cold drawing cavity on each cold drawing die component is sequentially reduced along the direction from the feeding rail to the discharging rail.
3. A steel pipe cold-drawing apparatus as defined in claim 1 wherein: the cold-drawing die component comprises a plurality of cold-drawing die components which are uniformly distributed in a circumferential mode so as to form the cold-drawing cavity between the cold-drawing die components; the adjusting mechanism is suitable for driving the cold-drawing die assembly to move towards the direction far away from the cold-drawing cavity, so that the cold-drawing die assembly synchronously rotates through a rotary guide structure arranged between the cold-drawing die assembly and the shell, and the size of the cold-drawing cavity can be adjusted.
4. A steel pipe cold-drawing apparatus as claimed in claim 3, wherein said cold-drawing die assembly comprises a cold-drawing roller and a connecting frame, said cold-drawing roller side wall is provided with cold-drawing grooves in an arc shape, and said cold-drawing grooves are mutually combined to form said cold-drawing cavity; the cold drawing roller with the link rotates to be connected, the link with adjustment mechanism connects, simultaneously the link with pass through between the inside wall of casing rotatory uide bushing structure is connected, so that adjustment mechanism drive the link drives the cold drawing roller still rotates when removing.
5. A steel pipe cold-drawing apparatus as defined in claim 3 wherein: the rotary guide structure comprises a guide post and a guide sleeve, the guide post is fixedly connected with the cold-drawing die assembly, and the guide sleeve is fixedly connected with the inner wall of the shell; the side parts of the guide columns are symmetrically provided with guide pins, and the inner side wall of the guide sleeve is symmetrically provided with inclined guide grooves along the axial direction; when the guide post is connected with the guide sleeve, the guide pin is matched with the guide groove, so that when the guide post is driven by the adjusting mechanism to move axially along the guide sleeve, the guide post can rotate through the matching of the guide pin and the guide groove.
6. A steel pipe cold-drawing apparatus as defined in claim 3 wherein: an opening is formed in the center of each of two ends of the shell, and a supporting seat is arranged on the side wall of the opening inside the shell; the adjustment mechanism includes:
the rotating sleeve is rotatably arranged on the supporting seat;
the adjusting plates are uniformly distributed on the circumference and correspond to the cold-drawing die assemblies, limiting holes are formed in the adjusting plates, and the adjusting plates are suitable for being connected with the cold-drawing die assemblies through the limiting holes; the end part of the adjusting plate is hinged with the rotating sleeve through a first hinge plate; and
the telescopic device is fixedly arranged and is suitable for driving the rotary sleeve to rotate around the supporting seat, and then the regulating plate drives the cold-drawing die assembly to move.
7. A steel pipe cold-drawing apparatus as claimed in any one of claims 1 to 6 wherein: the end parts of the feeding rails, which are close to the die device, are symmetrically provided with slide rails, and the two slide rails are provided with symmetrical cleaning mechanisms; the clearance mechanism includes:
a connecting plate;
the crankshaft is vertically and rotatably connected with the slide rail; and
a cleaning cavity for cleaning the surface of the steel pipe is formed between the two cleaning parts; the cleaning part is connected with the sliding rail in a sliding mode, and the cleaning part is hinged to the crankshaft through the connecting plate, so that the crankshaft drives the cleaning part to move back and forth along the sliding rail under the driving of a motor.
8. A steel pipe cold-drawing apparatus as defined in claim 7 wherein: the cleaning part includes:
the first supporting plate is arc-shaped and is connected with the sliding rail in a sliding mode through a fixed sliding block, and the first supporting plate is hinged with the crankshaft through the sliding block;
the scrapers are arranged on one side of the first supporting plate in a sliding mode and are uniformly distributed along the circumferential direction of the first supporting plate, so that the cleaning cavity is formed between the two first supporting plates through the scrapers, and an inclined surface is arranged on one side, away from the die device, of each scraper; and
the scraper blade with still pass through between the first backup pad the spring is connected, so that the scraper blade with form elastic sliding connection between the first backup pad, and then can be according to the process the steel pipe diameter automatically regulated in clearance chamber the size in clearance chamber.
9. A steel pipe cold-drawing apparatus as defined in claim 7 wherein: an oiling mechanism is symmetrically arranged on one side, close to the die device, of the cleaning mechanism on the feeding rail; the fat liquoring mechanism includes:
the oiling parts are fixedly connected with the feeding rail, and an oiling cavity for oiling the cleaned steel pipe is formed between the two oiling parts; and
the oil cylinder is fixedly connected with the feeding rail, the oil coating portion is communicated with the oil cylinder through an oil inlet pipe, the oil cylinder is connected with the crankshaft through a piston rod, so that cold drawing oil in the oil tank is pumped into the oil coating portion under the driving of the crankshaft, and then the cold drawing oil is coated on a steel pipe passing through the oil coating cavity.
10. A steel pipe cold-drawing apparatus as defined in claim 9 wherein: the oiling part comprises bristles and a second support plate, the second support plate is arc-shaped and is fixedly connected with the feeding rail, and the bristles are uniformly distributed on one side of the second support plate, so that the oiling cavity is formed between the two second support plates through the bristles; the inside of the second supporting plate is a cavity, the cavity is communicated with the oil inlet pipe, and a plurality of oil seepage holes communicated with the cavity are formed in the side wall, where the bristles are installed, of the second supporting plate, so that cold drawing oil can be adhered to the bristles through the oil seepage holes after entering the cavity through the oil inlet pipe.
CN202111585461.6A 2021-12-23 2021-12-23 Steel pipe cold-drawing equipment Active CN113967666B (en)

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Publication number Priority date Publication date Assignee Title
CN115069803A (en) * 2022-08-23 2022-09-20 江苏立万精密制管有限公司 Automatic cold-drawn steel pipe preprocessing device and processing method
CN115069588A (en) * 2022-05-13 2022-09-20 宁波市奉化明德铜业有限公司 Hopper mechanism of drawing machine and using method thereof

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CN212664541U (en) * 2020-06-23 2021-03-09 天津钜祥精密模具有限公司 Drawing die forming device
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GB493038A (en) * 1938-06-15 1938-09-30 Herbert Ltd A Adjustable drawing dies
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CN106787491A (en) * 2016-12-23 2017-05-31 潘学勇 A kind of power distribution station stator core in motor intelligently clears up robot
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CN115069588A (en) * 2022-05-13 2022-09-20 宁波市奉化明德铜业有限公司 Hopper mechanism of drawing machine and using method thereof
CN115069588B (en) * 2022-05-13 2024-04-12 宁波市奉化明德铜业有限公司 Hopper mechanism of pulling machine and using method thereof
CN115069803A (en) * 2022-08-23 2022-09-20 江苏立万精密制管有限公司 Automatic cold-drawn steel pipe preprocessing device and processing method

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