CN117548513B - Special-shaped steel drawing device and drawing method - Google Patents
Special-shaped steel drawing device and drawing method Download PDFInfo
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- CN117548513B CN117548513B CN202311065419.0A CN202311065419A CN117548513B CN 117548513 B CN117548513 B CN 117548513B CN 202311065419 A CN202311065419 A CN 202311065419A CN 117548513 B CN117548513 B CN 117548513B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 203
- 239000010959 steel Substances 0.000 title claims abstract description 203
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 53
- 238000009434 installation Methods 0.000 claims description 30
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 230000007306 turnover Effects 0.000 claims description 7
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 241000973497 Siphonognathus argyrophanes Species 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 13
- 230000002950 deficient Effects 0.000 abstract description 2
- 238000005452 bending Methods 0.000 abstract 1
- 230000003139 buffering effect Effects 0.000 description 8
- 244000309464 bull Species 0.000 description 8
- 239000011435 rock Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 206010066054 Dysmorphism Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- 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
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- 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
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Abstract
The invention provides a special-shaped steel drawing device and a drawing method, wherein the special-shaped steel drawing device comprises a positioning drawing frame, the top end of the positioning drawing frame is fixedly connected with a special-shaped steel pipe drawing frame, two groups of first guide rail rods are fixedly connected inside the special-shaped steel pipe drawing frame, the top end of the positioning drawing frame is slidably connected with a drawing trolley through the two groups of first guide rail rods, and the drawing process gradually starts to be separated from a drawing die along with the drawing of a special-shaped steel pipe by a mandrel. According to the invention, the surfaces of the mandrel and the special-shaped steel pipe blank are sufficiently clamped and fixed through the mandrel clamping mechanism and the mandrel fixing assembly, so that the mandrel is kept stable in the process of being inserted into the special-shaped steel pipe, and in the process that the hydraulic telescopic assembly drives the mandrel to move so as to drive the special-shaped steel pipe blank to be drawn and formed, the drawing trolley is limited to move along the limited track of the central axis in the front-back direction of the device through the drawing trolley track limiting mechanism, and the phenomenon that the defective rate is reduced due to deflection bending of the drawn special-shaped steel pipe in the axial direction is prevented.
Description
Technical Field
The invention relates to the technical field of special-shaped steel production, in particular to a special-shaped steel drawing device and a drawing method.
Background
The special-shaped steel is a widely used steel, and the steel is divided into a simple section steel and a complex or special-shaped section steel according to the section shape, wherein the former is characterized in that any point on the periphery of the cross section of the steel is tangential and generally not intersected in the section, such as: square steel, round steel, flat steel, angle steel, hexagonal steel and the like; common special-shaped steel includes hot rolled window frame steel, ploughshare steel, hot rolled steel for automobile wheel retainer rings, hot rolled steel for track shoes, hot rolled steel for automobile wheel rims, steel rails, shipbuilding flat-bulb steel, cable drum steel, scraper steel and the like.
However, when the technical scheme is implemented, in the process of drawing the steel pipe, as the drawing trolley inserts the core rod into the steel pipe to draw, the core rod is difficult to separate from the steel pipe, and when the steel pipe is pulled away from the module, the steel pipe is easy to strike on the surface of equipment due to inertia, so that damage is caused, and therefore, the special-shaped steel drawing device and the drawing method are provided.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a special-shaped steel drawing device and a drawing method. According to the special-shaped steel drawing device and the drawing method, when the first motor in the mandrel clamping mechanism is started and rotates forwards and the hollow gear is evaluated to rotate anticlockwise, the L-shaped clamping plate in the mandrel fixing assembly is inserted into the inner cavity of the threaded annular groove through the rotating tube, the L-shaped clamping plate moves towards the center of the hollow gear along the threaded track of the threaded annular groove through the rotating tube along the sliding rail frame, the L-shaped clamping plate drives the mandrel clamping block to shrink inwards, the surface of the mandrel is clamped fully, the mandrel is kept stable in the inserted special-shaped steel tube, the hydraulic telescopic assembly drives the mandrel to move and further drives the special-shaped steel tube blank to be drawn and formed, the second motor in the track limiting mechanism of the drawing trolley is controlled to be started, the power source required by the hydraulic telescopic assembly to partially pull the drawing trolley to move is limited to move, the track limiting along the central axis of the front and back direction of the drawing trolley is limited, and the phenomenon that the defective rate of the drawn special-shaped steel tube is reduced is prevented from being caused.
In order to achieve the above purpose, the present invention provides the following technical solutions: the special-shaped steel drawing device comprises a positioning drawing frame, wherein the top end of the positioning drawing frame is fixedly connected with a special-shaped steel pipe drawing frame, two groups of first guide rail rods are fixedly connected to the inside of the special-shaped steel pipe drawing frame, a drawing trolley is slidably connected to the top end of the positioning drawing frame through the two groups of first guide rail rods, one end of the drawing trolley is fixedly connected with a hollow mounting frame with a cavity inside, one end of the hollow mounting frame is fixedly connected with a hydraulic telescopic component for providing driving force for the hollow mounting frame, and one end of the hydraulic telescopic component is fixedly connected with a limiting baffle arranged at one end of the positioning drawing frame;
A mandrel clamping mechanism which is fixed on the drawing trolley and used for clamping the mandrel after inserting the mandrel and a mandrel fixing assembly used for fixing the mandrel and the special-shaped steel tube blank to be drawn are arranged between the special-shaped steel tube drawing frame and the hollow mounting frame, and the special-shaped steel tube drawing assembly used for feeding the special-shaped steel tube blank and limiting the shape of the special-shaped steel tube after drawing is also arranged on the special-shaped steel tube drawing frame; drawing trolley track limiting mechanisms are arranged on the left side and the right side of the lower part of the drawing trolley;
The bottom fixedly connected with of location drawing frame is the slope conduction board of slope form, the one end of slope conduction board articulates there is convertible bin gate.
Further, the mandrel clamping mechanism comprises a corresponding inserted rod fixedly connected to the inside of the hollow mounting frame, a mandrel inserting base is fixedly connected to one end, close to the hydraulic telescopic assembly, of the corresponding inserted rod, two groups of hollow mounting frames which are axisymmetric to each other are inserted on the outer surface of the mandrel inserting base, the two groups of hollow mounting frames are respectively positioned on the left side and the right side of the mandrel inserting base and are fixedly installed at the top end of the drawing trolley, and an annular embedded frame is rotationally connected between the two groups of hollow mounting frames;
The utility model discloses a ring-shaped embedded frame, including annular embedded frame, ring-shaped embedded frame, auxiliary type gear, hollow gear, screw thread has been seted up to the one end of annular embedded frame, the inside of annular embedded frame has corresponding bull stick through the grafting of sliding the chamber, the surface fixedly connected with spring of corresponding bull stick, the first motor of corresponding bull stick outer end fixedly connected with, the bottom fixedly connected with auxiliary type gear of corresponding bull stick, the one end meshing of auxiliary type gear is connected with hollow gear, hollow gear fixed mounting is on the inner wall of annular embedded frame, the annular embedded frame is through the meshing between auxiliary type gear and the hollow gear, and then is synchronous rotatory state setting with auxiliary type gear.
Further, the core rod fixing assembly comprises a threaded annular groove formed in one end, far away from the auxiliary gear, of the hollow gear, a plurality of L-shaped clamping plates which are symmetrical in center are slidably connected to the front end of the hollow gear through the threaded annular groove, a rotating pipe is fixedly connected to the joint of each L-shaped clamping plate and the threaded annular groove, and a sliding rail frame fixedly mounted on the inner wall of the hollow installation frame is slidably connected to the other end of each L-shaped clamping plate.
Further, the core rod fixing assembly further comprises a plurality of groups of core rod clamping blocks fixedly connected to one end, far away from the core rod inserting base, of the L-shaped clamping plates, elastic core rod clamping pull ropes are inserted between every two of the plurality of groups of core rod clamping blocks, the plurality of groups of core rod clamping blocks are spliced through the plurality of core rod clamping pull ropes to form a ring original-state clamping part, and the axis of the ring original-state clamping part coincides with the axis of the hollow gear.
Further, the core rod fixing assembly further comprises a telescopic rod fixedly connected to the outer end of the annular jogged frame, the other end of the telescopic rod is fixedly connected with a jogged inserting rod, an L-shaped mechanism formed by the telescopic rod and the jogged inserting rod is arranged outside the annular jogged frame, the core rod fixing assembly further comprises a corresponding slot formed in the left side of one end, close to the drawing trolley, of the drawing trolley, and a cavity inserting block is fixedly connected to the bottom end of the slot, and the inner cavity of the cavity inserting block is matched with the jogged inserting rod; and a magnet for magnetically attracting the metal port of the fit plug rod is fixedly arranged at the bottom end of the inner part of the cavity plug block.
Further, the drawing trolley track limiting mechanism comprises two clamping blocks, the two clamping blocks are respectively and fixedly connected to the left end and the right end of the limiting baffle, two groups of second guide rail rods are fixedly connected to one side, facing the special-shaped steel pipe drawing frame, of each clamping block, a group of first rotating wheels are respectively and rotatably connected to the left end and the right end of the lower part of the joint of the positioning drawing frame and the special-shaped steel pipe drawing frame, one side, facing the special-shaped steel pipe drawing frame, of each clamping block is provided with a group of second rotating wheels, chains are respectively and circumferentially connected to the outer surfaces of the first rotating wheels and the second rotating wheels, which are positioned on the same side on the left side or the right side of the device, of each group of first rotating wheels is fixedly connected with a second motor;
The drawing trolley track limiting mechanism comprises a first guide rail rod, a second guide rail rod, a clamping block, a second guide rail rod, a small inserting rod, a hollow sliding groove plate, a chain and a drawing trolley, wherein the clamping block is arranged on the outer surface of the first guide rail rod, the second guide rail rod is connected with the hollow sliding groove plate in a sliding mode, the hollow sliding groove plate is connected to the clamping block in a sliding mode, the auxiliary chain block is fixedly connected to one end of the chain, the small inserting rod is connected to one end of the auxiliary chain block in a rotating mode, an auxiliary sliding block is connected to one end of the small inserting rod in a rotating mode, the auxiliary sliding block is vertically connected to the hollow sliding groove plate in a sliding mode, and the hollow sliding groove plate is fixedly installed at the bottom end of the drawing trolley.
Further, the special-shaped steel tube drawing assembly is respectively provided with two groups of installation positioning plates, the two groups of installation positioning plates are respectively and fixedly connected to the left side and the right side of the top end of the special-shaped steel tube drawing frame, two groups of clamping assemblies are inserted into the installation positioning plates, the left and the right groups of clamping assemblies positioned on the same front side and the back side of the installation positioning plates are fixedly connected with the same positioning bolt ring, the installation positioning plates and the two groups of clamping assemblies inserted into the installation positioning plates are inserted into the installation positioning plates through threaded inserted rods in threaded connection, hollow drawing blocks are inserted between the two groups of positioning bolt rings, and the hollow drawing blocks are fixedly arranged at the top end of the special-shaped steel tube drawing frame; each positioning bolt ring is fixed at one end far away from the hollow drawing block, a drawing die is fixedly arranged in the hollow drawing block through a cavity, a pipe outlet is formed in the front end of the drawing die, and the radius of the pipe outlet formed in the rear end is smaller than that of a pipe inlet inserted into a special-shaped steel pipe blank in a special-shaped steel pipe drawing frame positioned at the front end.
Further, the drawing die is close to the circumference lateral wall of the hollow drawing block and is fixedly connected with a double-layer buffer layer, the double-layer buffer layer is fixedly arranged on the inner wall of the hollow drawing block, and a plurality of groups of rubber marbles are slidably connected in the double-layer buffer layer through a plurality of groups of arranged slideways.
Further, the device also comprises a core rod clamping and stabilizing assembly, wherein the core rod clamping and stabilizing assembly comprises a buffering clamping frame fixedly connected with one end of the core rod inserting base penetrating through the hollow installation frame and a plurality of groups of air bags fixedly connected inside the buffering clamping frame, and the inside of the buffering clamping frame is in a cavity shape.
The invention also provides a drawing method of the special-shaped steel by adopting the device, which comprises the following steps:
S1: inserting a special-shaped steel pipe blank from the front end of the special-shaped steel pipe drawing frame, inserting a core rod section into a core rod clamping mechanism from front to back, controlling the hydraulic telescopic assembly and the drawing trolley track limiting mechanism to be started, driving the drawing trolley to move towards the direction close to the special-shaped steel pipe drawing frame according to the position of the central axis of the device in the front-back direction, and further enabling the core rod to be driven by the drawing trolley to be inserted into a hollow inner cavity of the special-shaped steel pipe blank and controlling the hydraulic telescopic assembly and the drawing trolley track limiting mechanism to stop;
S2: controlling the mandrel clamping mechanism and the mandrel fixing assembly to simultaneously clamp and fix the mandrel, so that the mandrel and one end of the special-shaped steel tube blank to be drawn are fixed;
S3: controlling the hydraulic telescopic assembly and the drawing trolley track limiting mechanism to be opened again, driving the drawing trolley to move towards the direction away from the special-shaped steel pipe drawing frame, and further enabling the special-shaped steel pipe blank to gradually pass through the special-shaped steel pipe drawing assembly from front to back by pulling a mandrel spliced with the mandrel clamping mechanism;
s4: after the drawing of the special-shaped steel pipe blank is completed, stopping the hydraulic telescopic assembly and the drawing trolley track limiting mechanism, controlling the mandrel clamping mechanism and the mandrel fixing mechanism to separate from the mandrel, rolling the special-shaped steel pipe obtained by drawing down to the surface of the turnover bin gate along the inclined channel of the inclined conductive plate, and completing the collection of the special-shaped steel pipe;
S5: and repeating the steps S1-S4 to finish drawing of the plurality of special-shaped steel pipes.
The invention has the technical effects and advantages that:
1. According to the device provided by the invention, after the mandrel is stretched into the hollow part of the special-shaped steel tube blank by arranging the mandrel clamping mechanism and the mandrel fixing assembly, the first motor is started to rotate forward, so that the hollow gear is driven to rotate anticlockwise until the hollow gear is rotated by 90 degrees, the L-shaped clamping plate of the mandrel fixing assembly is inserted into the inner cavity of the threaded annular groove through the rotating tube, the L-shaped clamping plate moves towards the center of the hollow gear along the threaded track of the threaded annular groove through the rotating tube along the sliding rail frame, the L-shaped clamping plate drives the mandrel clamping block to shrink inwards, so that the surface of the mandrel is fully clamped, the mandrel and the special-shaped steel tube blank are fixedly clamped, the mandrel is pulled away from the special-shaped steel tube drawing frame along with the pulling of the drawing trolley of the hydraulic telescopic assembly, the special-shaped steel tube blank is pulled, the end of the special-shaped steel tube blank is gradually pulled to be separated from the drawing die by the drawing assembly, the drawing process of the special-shaped steel tube blank is completed, the first motor is started again to rotate reversely, the hollow gear is driven to rotate clockwise, the clamping fastening force between the mandrel and the finished special-shaped steel tube is reduced, the inner surface of the special-shaped steel tube is easy to fall off, and the special-shaped steel tube is easy to be clamped with the mandrel clamping efficiency is not correspondingly arranged by the clamping mechanism.
2. Because the plug inserts the base and positions as the tip of plug, cause no matter the plug week side to take place to rock, then the tip clamping position of plug is unchangeable, then the plug inserts the base and rocks when taking place to rock, the plug inserts the base and rocks the inside rubber of extrusion buffering block frame, and buffering block frame utilizes the elasticity collision of multiunit gasbag, cause the thrust that rocks to cushion and offset, and then guaranteed the stability of plug centre gripping, avoid the drop of plug and the too big scope of rocking of plug and cause the dysmorphism steel pipe to receive great inertia and collide with equipment inside and damage.
3. According to the special-shaped steel tube drawing device, the hollow chute plate is arranged to drive the drawing trolley to slide along the surface of the first guide rail rod, the drawing trolley passes through the hollow chute plate to the special-shaped steel tube drawing frame along the moving direction of the chain, the auxiliary sliding block is conducted to the other direction along the chain along with the continuous rotation of the chain, the auxiliary sliding block slides downwards along the inner cavity of the hollow chute plate, and the drawing trolley corresponds to the mandrel to draw the special-shaped steel tube, so that a whole process is completed, and the drawing efficiency of the special-shaped steel tube is improved.
4. When the special-shaped steel pipe blank is drawn to the rear side of the special-shaped steel pipe drawing assembly from the drawing die through the pipe outlet, the double-layer buffer layers and the elastic rubber balls are arranged, external pressure applied to the special-shaped steel pipe blank in the drawing process is transmitted to the rubber balls through the double-layer buffer layers, and as the rubber balls are in a plurality of groups and are respectively distributed at each position between the two double-layer buffer layers, the pressure applied to each position applied to the inside of the drawing die is counteracted by the elasticity of the rubber balls, so that the special-shaped steel pipe is prevented from drawing deformation caused by vibration of the drawing die in the drawing process.
Drawings
Fig. 1 is a schematic structural view of a positioning drawing frame of the present invention.
Fig. 2 is an enlarged view of the structure of the portion a of fig. 1 according to the present invention.
Fig. 3 is a schematic structural view of the drawing frame for the profiled steel tube in the invention.
Fig. 4 is a schematic view of the structure of the outlet of the present invention.
Fig. 5 is a schematic structural view of the hollow mounting frame of the present invention.
FIG. 6 is a schematic view of the plug-in base of the present invention.
Fig. 7 is an enlarged view of the B section structure of fig. 6 according to the present invention.
Fig. 8 is a schematic structural view of the telescopic rod of the present invention.
Fig. 9 is a schematic structural view of the annular jogged frame of the present invention.
FIG. 10 is a schematic view of the auxiliary teeth of the present invention
FIG. 11 is a schematic view of the structure of the roll-over door of the present invention.
The reference numerals are: 1. positioning a drawing frame; 2. a special-shaped steel pipe drawing frame; 3. installing a positioning plate; 4. tilting the conductive plate; 51. a first wheel; 52. a second wheel; 6. drawing trolley; 7. a first rail bar; 8. a limit baffle; 9. a hydraulic telescoping assembly; 10. a clamping block; 11. a chain; 12. a second rail bar; 13. an auxiliary chain block; 14. a hollow runner plate; 15. an auxiliary slide block; 16. a clamping assembly; 17. a threaded insert rod; 18. a hollow drawing block; 19. positioning a bolt ring; 20. drawing a die; 21. a pipe outlet; 22. a double-layer buffer layer; 23. rubber marbles; 24. a hollow mounting rack; 25. corresponding inserted bars; 26. an annular jogged frame; 27. a hollow rest; 28. the mandrel clamps the pull rope; 29. the core rod is inserted into the base; 30. a telescopic rod; 31. fitting the inserted rod; 32. a cavity insert; 33. a buffer clamping frame; 34. an air bag; 35. a hollow gear; 36. a threaded annular groove; 37. an L-shaped clamping plate; 38. a core rod clamping block; 39. a corresponding rotating rod; 40. an auxiliary gear; 41. a spring; 42. a turnover bin gate.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures may refer to the general design, so that the same embodiment and different embodiments of the present disclosure may be combined with each other without conflict.
As shown in fig. 1-10, the special-shaped steel drawing device provided by the invention comprises a positioning drawing frame 1, wherein the top end of the positioning drawing frame 1 is fixedly connected with a special-shaped steel pipe drawing frame 2, the inside of the special-shaped steel pipe drawing frame 2 is fixedly connected with two groups of first guide rail rods 7, the top end of the positioning drawing frame 1 is slidably connected with a drawing trolley 6 through the two groups of first guide rail rods 7, one end of the drawing trolley 6 is fixedly connected with a hollow mounting frame 24 with a hollow cavity inside, one end of the hollow mounting frame 24 is fixedly connected with a hydraulic expansion assembly 9 for providing driving force for the hollow mounting frame, and one end of the hydraulic expansion assembly 9 is fixedly connected with a limit baffle 8 arranged at one end of the positioning drawing frame 1;
A mandrel clamping mechanism which is fixed on the drawing trolley 6 and is used for clamping the mandrel after inserting the mandrel and a mandrel fixing assembly which is used for fixing the mandrel and the special-shaped steel tube blank to be drawn are arranged between the special-shaped steel tube drawing frame 2 and the hollow mounting frame 24, and the special-shaped steel tube drawing frame 2 is also provided with a special-shaped steel tube drawing assembly which is used for feeding the special-shaped steel tube blank and limiting the shape of the special-shaped steel tube after drawing; the left side and the right side of the lower part of the drawing trolley 6 are provided with drawing trolley track limiting mechanisms;
The bottom end of the positioning drawing frame 1 is fixedly connected with an inclined conduction plate 4, and one end of the inclined conduction plate 4 is hinged with a turnover bin door 42. When the device provided by the application is used for drawing the special-shaped steel pipe, a worker manually inserts a special-shaped steel pipe into the special-shaped steel pipe drawing assembly from the special-shaped steel pipe drawing frame 2, clamps and fixes the mandrel and the special-shaped steel pipe blank inserted into the special-shaped steel pipe drawing assembly through the mandrel clamping mechanism and the mandrel fixing assembly, then drives the drawing trolley 6 to move towards the direction away from the special-shaped steel pipe drawing frame 2 through the hydraulic telescopic assembly 9, and pulls the special-shaped steel pipe blank to be gradually drawn out through the pipe outlet 21 through the drawing mandrel, so that drawing of the special-shaped steel pipe is completed, and the special-shaped steel pipe obtained after drawing is stored through the turnover bin gate 42.
Further, the mandrel clamping mechanism comprises a corresponding inserted rod 25 fixedly connected to the inside of the hollow mounting frame 24, a mandrel inserting base 29 is fixedly connected to one end, close to the hydraulic telescopic assembly 9, of the corresponding inserted rod 25, two groups of hollow installing frames 27 which are axisymmetric to each other are inserted on the outer surface of the mandrel inserting base 29, the two groups of hollow installing frames 27 are respectively positioned on the left side and the right side of the mandrel inserting base 29 and are fixedly installed at the top end of the drawing trolley 6, and an annular jogging frame 26 is rotatably connected between the two groups of hollow installing frames 27;
The one end of annular gomphosis frame 26 is seted up and is slided the chamber, the screw thread has been seted up to the inside of smooth chamber, the inside of annular gomphosis frame 26 is pegged graft through the smooth chamber has corresponding bull stick 39, the surface fixedly connected with spring 41 of corresponding bull stick 39, the first motor of corresponding bull stick 39 outer end fixedly connected with, the bottom fixedly connected with auxiliary type gear 40 of corresponding bull stick 39, the one end meshing of auxiliary type gear 40 is connected with hollow gear 35, hollow gear 35 fixed mounting is on the inner wall of annular gomphosis frame 26, annular gomphosis frame 26 is through the meshing between auxiliary type gear 40 and the hollow gear 35, and then be synchronous rotatory state setting with auxiliary type gear 40. The number of rotation turns of the corresponding rotating rod 39 is positioned by the spring 41, so that the hollow gear 35 is driven by the auxiliary gear 40 to rotate only 90 degrees (namely, the first motor drives the corresponding rotating rod 39 to rotate to a certain depth along the threads in the sliding cavity and then reaches the compression limit of the spring 41, so that the spring 41 is compressed to the limit and abuts against the corresponding rotating rod 39 and does not rotate continuously and extend downwards to rotate), and therefore, the auxiliary gear 40 can only rotate to a certain angle, and the hollow gear 35 is driven to rotate only 90 degrees from the initial position and stops in the process of rotating the auxiliary gear to the certain angle;
as another preferred embodiment of the present invention, the mandrel fixing assembly includes a threaded annular groove 36 formed at one end of the hollow gear 35 far from the auxiliary gear 40, that is, the auxiliary gear 40 is located at the rear end of the hollow gear 35, and the rear end of the hollow gear 35 is formed with teeth engaged with the auxiliary gear 40, the threaded annular groove 36 is located at the front end of the hollow gear 35, the front end of the hollow gear 35 is slidably connected with a plurality of L-shaped engaging plates 37 which are centrally symmetrical about the center of the hollow gear 35 through the threaded annular groove 36, as shown in fig. 8, the number of L-shaped engaging plates 37 is at least 3, a rotating pipe is fixedly connected to the connection part of each L-shaped engaging plate 37 and the threaded annular groove 36, and a sliding rail frame fixedly mounted on the inner wall of the hollow mounting frame 27 is slidably connected to the other end of each L-shaped engaging plate 37.
An infrared emitter is arranged at one end of the drawing trolley 6 facing the special-shaped steel pipe drawing frame 2, an infrared receiver motor is arranged at one end of the special-shaped steel pipe drawing frame 2 facing the drawing trolley 6 and sends information to a control component through the infrared receiver, as the drawing trolley 6 approaches the special-shaped steel pipe drawing frame 2, a mandrel passes through the hollow drawing block 18 and is inserted into the pipe outlet 21 to enter the special-shaped steel pipe, when the mandrel advances to a position where the mandrel is clamped and fixed with the special-shaped steel pipe blank, the infrared receiver sends the information that the mandrel has reached the position where the mandrel is clamped and fixed with the special-shaped steel pipe blank to the control component, the first motor is controlled by a program through the control component to drive a corresponding rotating rod 39 to start rotating, the corresponding rotating rod 39 drives a hollow gear 35 to rotate anticlockwise through an auxiliary gear 40 at the view angles of figures 1 and 5, the mandrel clamping blocks 38 are driven to clamp the mandrels, when drawing starts, the drawing trolley 6 is controlled to gradually move towards the rear end of the positioning drawing frame 1 away from the special-shaped steel tube drawing frame 2, the first motor is controlled to rotate reversely at the moment because the first motor is a forward and reverse motor, the corresponding rotating rod 39 is driven to rotate reversely, the corresponding rotating rod 39 drives the hollow gear 35 to rotate clockwise from the view angles of fig. 1 and 5 through the auxiliary gear 40, the mandrel clamping blocks 38 are driven to gradually loosen the mandrels, the mandrel inserting base 29 connected with the hollow mounting frame 24 through the corresponding inserting rod 25 is driven by the hydraulic telescopic assembly 9 to move from front to back, the mandrel inserted on the mandrel inserting base 29 and the special-shaped steel tube on the periphery of the mandrel are driven to move from front to back, the deformed steel pipe is gradually moved from the blank section of the drawing die 20 to the outlet 21 smaller than the blank section of the drawing die 20, and is gradually pulled out.
Further, the core rod fixing assembly further comprises a plurality of groups of core rod clamping blocks 38 fixedly connected to one end, far away from the core rod inserting base 29, of the L-shaped clamping plate 37, a core rod clamping pull rope 28 with elasticity is inserted between every two of the plurality of groups of core rod clamping blocks 38, the plurality of groups of core rod clamping blocks 38 are spliced through the plurality of core rod clamping pull ropes 28 to form a ring original-shape clamping portion, and the axis of the ring original-shape clamping portion coincides with the axis of the hollow gear 35.
The special-shaped steel pipe is inserted from the front end of the special-shaped steel pipe drawing frame 2, namely, after the section of a blank of the drawing die 20 is inserted, the first motor is started to rotate forwards, and then the hollow gear 35 is driven to rotate anticlockwise to 90 degrees as shown in fig. 1 and 5, as shown in fig. 8, the L-shaped clamping plate 37 is gradually inserted into the inner cavity of the threaded annular groove 36 through a rotary pipe, then the L-shaped clamping plate 37 gradually moves towards the center of the hollow gear 35 along the threaded track of the threaded annular groove 36 through the rotary pipe along the sliding rail frame, the L-shaped clamping plate 37 drives the plurality of core rod clamping blocks 38 to shrink inwards, so that the surfaces of the core rods are sufficiently clamped, the core rods are enabled to remain stable in the process of inserting the special-shaped steel pipe and the relative position of the special-shaped steel pipe in the process of applying a drawing force to the core rods, then the drawing trolley 6 is gradually far away from the special-shaped steel pipe drawing frame 2 along with the pulling of the hydraulic telescopic component 9, and then the core rods are pulled to drive the plurality of core rods to shrink inwards to clamp the core rods through the L-shaped clamping plate 37, the magnet at the bottom of the cavity insert block 32 is gradually moved towards the center of the hollow gear 31, the special-shaped steel pipe is gradually released from the corresponding to the special-shaped steel pipe 20, and the special-shaped steel pipe is gradually released from the special-shaped steel pipe is gradually controlled to rotate, and then the special-shaped steel pipe is gradually released towards the special-shaped steel pipe is gradually and the special-shaped steel pipe is gradually released from the die 20 is controlled to gradually move towards the corresponding die after the special-shaped steel pipe is kept to rotate, and the special-shaped steel pipe is gradually kept to be gradually kept away from the special-shaped steel pipe.
Further, the mandrel fixing assembly further comprises a telescopic rod 30 fixedly connected to the outer end of the annular jogged frame 26, the other end of the telescopic rod 30 is fixedly connected with a jogged inserting rod 31, an L-shaped mechanism formed by the telescopic rod 30 and the jogged inserting rod 31 is arranged outside the annular jogged frame 26, the mandrel fixing assembly further comprises a corresponding slot formed in the left side of one end, close to the special-shaped steel tube drawing frame 2, of the drawing trolley 6, a cavity inserting block 32 is fixedly connected to the bottom end of the slot, and the inner cavity of the cavity inserting block 32 is matched with the jogged inserting rod 31; a magnet for magnetically attracting the metal port of the mating plug rod 31 is fixedly mounted at the inner bottom end of the cavity plug block 32.
When the first motor is started, the first motor drives the corresponding rotating rod 39 to rotate in situ relative to the annular embedding frame 26 along the thread in the sliding cavity formed by the annular embedding frame 26 and gradually move from outside to inside from the outer surface of the embedding frame 26 to the inner surface, the spring 41 fixed on the outer wall of the corresponding rotating rod 39 does not influence the spiral track defined by the thread and moves downwards in the sliding cavity, the outer surface of the corresponding rotating rod 39 is fixed on the outer surface of the corresponding rotating rod 39, the telescopic two ends of the spring 41 are not fixed at the fixed position of the outer surface of the corresponding rotating rod 39, the telescopic two ends of the spring 41 can be telescopic due to interference, the auxiliary gear 40 at the bottom of the corresponding rotating rod 39 is contacted with the hollow gear 35 and meshed with the hollow gear 35, the hollow gear 35 and the corresponding rotating rod 39 are synchronously rotated under the action of the continuously provided power source of the first motor, and because the hollow gear 35 is fixedly connected with the annular jogged frame 26, the hollow gear 35 drives the annular jogged frame 26 to rotate around the self axis under the limit of the two groups of hollow mounting frames 27, the annular jogged frame 26 drives the telescopic rod 30 and the jogged inserting rod 31 to rotate together, when the telescopic rod 30 is driven to rotate anticlockwise by 90 degrees in the view angles of fig. 1 and 5, the jogged inserting rod 31 is inserted into the inside of the telescopic rod along the corresponding slot formed on the surface of the drawing trolley 6, then the jogged inserting rod 31 is aligned with the through hole of the cavity inserting block 32, a magnet is fixedly arranged at the bottom end of the inside of the cavity inserting block 32, the metal port of the jogged inserting rod 31 is magnetically sucked, the jogged inserting rod 31 is stably rotated by 90 degrees and then is inserted into the bottom plane of the drawing trolley 6, and further maintains the stability of the holding of the core rod by the plurality of sets of core rod holding blocks 38 at this time.
As another preferred embodiment of the invention, the drawing trolley track limiting mechanism comprises two clamping blocks 10, wherein the two clamping blocks 10 are respectively and fixedly connected to the left end and the right end of the limiting baffle 8, one side of each clamping block 10 facing the special-shaped steel pipe drawing frame 2 is fixedly connected with two groups of second guide rail rods 12, the left end and the right end of the lower part of the connecting part of the positioning drawing frame 1 and the special-shaped steel pipe drawing frame 2 are respectively and rotatably connected with one group of first rotating wheels 51, one side of each clamping block 10 facing the special-shaped steel pipe drawing frame 2 is provided with one group of second rotating wheels 52, the outer surfaces of the first rotating wheels 51 and the second rotating wheels 52 positioned on the same side of the left side or the right side of the device are respectively and fixedly connected with a chain 11 in a winding way, and one end of each group of first rotating wheels 51 is fixedly connected with a second motor;
The drawing trolley track limiting mechanism further comprises hollow chute plates 14 which are connected to the outer surfaces of the two groups of second guide rail rods 12 on each clamping block 10 in a sliding mode, one end of each chain 11 is fixedly connected with an auxiliary chain block 13, one end of each auxiliary chain block 13 is rotatably connected with a small inserting rod, one end of each small inserting rod is rotatably connected with an auxiliary sliding block 15, the auxiliary sliding blocks 15 are vertically and slidably connected to the inside of each hollow chute plate 14, and the hollow chute plates 14 are fixedly installed at the bottom end of the drawing trolley 6.
The second motor is used as the drive of the second rotating wheel 52 to drive the second rotating wheel 52 to rotate, so as to drive the chain 11 to drive, the drive of the chain 11 drives the first rotating wheel 51 at the lower part of the clamping block 10 to rotate, the hollow chute plate 14 is guided by the second guide rail rod 12 to enable the hollow chute plate 14 and the drawing trolley 6 to slide only on the surface of the second guide rail rod 12, at the moment, the chain 11 drives the hollow chute plate 14 to synchronously move through the auxiliary chain block 13, the hollow chute plate 14 drives the drawing trolley 6 to slide along the surface of the first guide rail rod 7, and when the drawing trolley 6 passes through the hollow chute plate 14 to the position of the profiled steel pipe drawing frame 2 along the moving direction of the chain 11, the auxiliary chain block 13 is driven to deflect in situ along with the continuous drive of the chain 11, so as to drive the auxiliary slider 15 to move from the upper part to the lower part of the hollow chute plate 14, and the principle is applicable to the chain 11 at the left and right sides of the device, the first rotating wheel 51, the hollow chute plate 14 and the auxiliary chain block 13 are identical in rotation speed; the auxiliary chain block 13 rotates in situ in a side gap of the hollow chute plate 14 under the drive of the chain 11, the auxiliary sliding block 15 is driven to slide up and down in the hollow chute plate 14, the straight line walking route of the hollow chute plate 14 in the front-back direction limited by the second guide rail rod 12 is limited, the drawing trolley is limited to walk on the left side and the right side under the straight line condition limited by the second guide rail rod 12, the walking route of the hydraulic telescopic rod 9 for pulling the drawing trolley 6 is the central axis of the whole device in the front-back direction, deviation is not generated, meanwhile, the drawing trolley 6 is pulled by the auxiliary hydraulic telescopic assembly 9 formed by the second motor, the chain 11, the first rotating wheel 51 and the second rotating wheel 52 along the second driving force of the front-back direction, the whole walking route of the drawing trolley 6 is ensured to be a rectangular area, the uniformity of force transmitted to the mandrel and the special-shaped steel tube is ensured due to the fact that the pulling force of the hydraulic telescopic assembly 9 is limited to the pulling force is only, the special-shaped steel tube is not generated, the special-shaped tube blank is not broken, the defect that the drawing efficiency of the special-shaped tube blank is not limited in the drawing die is not influenced, and the defect that the drawing process is broken is not caused in the direction is avoided due to the fact that the drawing of the special-shaped tube blank is broken.
As another preferred embodiment of the invention, the special-shaped steel tube drawing assembly comprises two groups of installation positioning plates 3, the two groups of installation positioning plates 3 are respectively and fixedly connected to the left side and the right side of the top end of the special-shaped steel tube drawing frame 2, the two groups of installation positioning plates 3 are symmetrical with respect to the vertical plane of the left and the right bisecting devices, namely the vertical plane where the central axis of the device for walking the drawing trolley is located, two groups of clamping assemblies 16 are inserted into the interior of each group of installation positioning plates 3, the two groups of clamping assemblies 16 are respectively positioned at the front side and the rear side of the installation positioning plate 3, the left and the right groups of clamping assemblies 16 positioned at the front side and the rear side of the installation positioning plate 3 are fixedly connected with the same positioning bolt ring 19, the installation positioning plate 3 and the interior of the two groups of clamping assemblies 16 inserted into the installation positioning plate are inserted into each other through threaded inserted rods 17 connected with threads, hollow drawing blocks 18 are inserted between the two groups of positioning bolt rings 19, and the hollow drawing blocks 18 are fixedly arranged at the top end of the special-shaped steel tube drawing frame 2; each positioning bolt ring 19 is fixed at one end far away from the hollow drawing block 18, a drawing die 20 is fixedly arranged in the hollow drawing block 18 through a cavity, a pipe outlet 21 is formed in the front end of the drawing die 20, and the radius of the pipe outlet 21 formed in the rear end is smaller than the radius of a pipe inlet for inserting a special-shaped steel pipe blank into the special-shaped steel pipe drawing frame 2 positioned at the front end.
When the finished product generated after the drawing of the special-shaped steel pipe blank needs to be updated, namely, a drawing die is updated, a worker grabs the threaded inserted rod 17 to rotate and separates the threaded inserted rod 17 from the inside of the installation locating plate 3, meanwhile, two groups of locating bolt rings 19 are not limited by the clamping assembly 16 and slide outwards from the inside of the installation locating plate 3, the drawing die 20 corresponding to the installation machining material is arranged in the hollow drawing block 18 without limitation, then the locating bolt rings 19 are manually pushed back to the two sides of the hollow drawing block 18 by the clamping assembly 16 to clamp the hollow drawing block 18, and the threaded inserted rod 17 is rotated to the inside of the installation locating plate 3, so that the updating installation of the die is completed.
As another preferred embodiment of the present invention, a double-layer buffer layer 22 is fixedly connected to the circumferential side wall of the drawing die 20 near the hollow drawing block 18, the double-layer buffer layer 22 is fixedly installed on the inner wall of the hollow drawing block 18, and multiple groups of rubber marbles 23 are slidingly connected to the inside of the double-layer buffer layer 22 through multiple groups of opened slideways. When the special-shaped steel pipe blank is drawn to the outside from the drawing die 20 through the pipe outlet 21, external pressure received by the special-shaped steel pipe blank in the drawing process is transmitted to the rubber marbles 23 through the double-layer buffer layers 22, as the rubber marbles 23 are in a plurality of groups and are respectively distributed at each position between the two double-layer buffer layers 22, the pressure received by each position received by the inside of the drawing die 20 is counteracted by the elasticity of the rubber marbles 23, and further the reduction of the yield caused by drawing deformation of the special-shaped steel pipe blank due to vibration of the drawing die 20 in drawing is avoided.
Still preferably, the profiled steel drawing device provided by the invention further comprises a mandrel clamping and stabilizing assembly, wherein the mandrel clamping and stabilizing assembly comprises a buffering clamping frame 33 fixedly connected to one end of the mandrel inserting base 29 penetrating through the hollow mounting frame 27, and a plurality of groups of air bags 34 fixedly connected to the inside of the buffering clamping frame 33, and the inside of the buffering clamping frame 33 is in a hollow shape.
Because the plug insert base 29 is positioned as the end part of the plug, no matter the peripheral side of the plug is rocked, the clamping position of the end part of the plug is unchanged, when the plug insert base 29 is rocked, the plug insert base 29 is rocked to squeeze rubber in the buffer clamping frame 33, the buffer clamping frame 33 utilizes elastic collision of a plurality of groups of air bags 34 to buffer and offset the rocked thrust, so that the stability of the plug clamping is ensured, and the abnormal steel pipe is prevented from being collided with the inside of the equipment and damaged due to larger inertia caused by the falling of the plug and overlarge rocking range of the plug.
The invention also provides a drawing method of the special-shaped steel by adopting the device, which comprises the following steps:
S1: inserting a special-shaped steel pipe blank from the front end of a special-shaped steel pipe drawing frame 2, inserting a core rod section into a core rod clamping mechanism from front to back, controlling a hydraulic expansion assembly 9 and a drawing trolley track limiting mechanism to be started, driving a drawing trolley 6 to move towards a direction close to the special-shaped steel pipe drawing frame 2 according to the position of a central axis in the front-back direction of the device, and further enabling the core rod to be driven by the drawing trolley to be inserted into a hollow inner cavity of the special-shaped steel pipe blank and controlling the hydraulic expansion assembly 9 and the drawing trolley track limiting mechanism to stop;
S2: the mandrel clamping mechanism and the mandrel fixing assembly are controlled to simultaneously clamp and fix the mandrel, so that the mandrel and one end of the special-shaped steel tube blank to be drawn are fixed;
S3: the hydraulic telescopic assembly 9 and the drawing trolley track limiting mechanism are controlled to be opened again, the drawing trolley 6 is driven to move towards the direction away from the special-shaped steel pipe drawing frame 2, and then the special-shaped steel pipe blank gradually passes through the special-shaped steel pipe drawing assembly from front to back by pulling a mandrel which is spliced with the mandrel clamping mechanism;
S4: after the drawing of the special-shaped steel pipe blank is completed, stopping the hydraulic telescopic assembly and the drawing trolley track limiting mechanism, simultaneously controlling the mandrel clamping mechanism to be started again and controlling the first motor to rotate reversely, controlling the mandrel clamping mechanism and the mandrel fixing mechanism to be separated from the mandrel, rolling the special-shaped steel pipe obtained by drawing to the surface of the turnover bin gate 42 along the inclined channel of the inclined conductive plate 4, and completing the collection of the special-shaped steel pipe;
s5: and repeating the steps S1-S4 to finish drawing of the plurality of special-shaped steel pipes.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The special-shaped steel drawing device comprises a positioning drawing frame (1), and is characterized in that the top end of the positioning drawing frame (1) is fixedly connected with a special-shaped steel pipe drawing frame (2), two groups of first guide rail rods (7) are fixedly connected to the inside of the special-shaped steel pipe drawing frame (2), a drawing trolley (6) is slidingly connected to the top end of the positioning drawing frame (1) through the two groups of first guide rail rods (7), a hollow mounting frame (24) with a cavity is formed in the inside of the drawing trolley (6) is fixedly connected to one end of the drawing trolley, a hydraulic telescopic component (9) for providing driving force for the hollow mounting frame (24) is fixedly connected to one end of the hollow mounting frame, and a limit baffle (8) arranged at one end of the positioning drawing frame (1) is fixedly connected to one end of the hydraulic telescopic component (9);
A mandrel clamping mechanism which is fixed on the drawing trolley (6) and is used for clamping the mandrel after inserting the mandrel and a mandrel fixing assembly which is used for fixing the mandrel and the special-shaped steel tube blank to be drawn are arranged between the special-shaped steel tube drawing frame (2) and the hollow mounting frame (24), and the special-shaped steel tube drawing assembly which is used for feeding the special-shaped steel tube blank and limiting the shape of the special-shaped steel tube after drawing is also arranged on the special-shaped steel tube drawing frame (2); drawing trolley track limiting mechanisms are arranged on the left side and the right side of the lower portion of the drawing trolley (6);
The bottom end of the positioning drawing frame (1) is fixedly connected with an inclined conduction plate (4) in an inclined shape, and one end of the inclined conduction plate (4) is hinged with a turnover bin gate (42);
The mandrel clamping mechanism comprises a corresponding inserted rod (25) fixedly connected to the inside of the hollow mounting frame (24), a mandrel inserting base (29) is fixedly connected to one end, close to the hydraulic telescopic assembly (9), of the corresponding inserted rod (25), two groups of hollow mounting frames (27) which are axisymmetric to each other are inserted on the outer surface of the mandrel inserting base (29), the two groups of hollow mounting frames (27) are respectively positioned on the left side and the right side of the mandrel inserting base (29) and are fixedly installed at the top end of the drawing trolley (6), and an annular embedded frame (26) is rotatably connected between the two groups of hollow mounting frames (27);
The novel annular embedded rack comprises an annular embedded rack body, and is characterized in that one end of the annular embedded rack body (26) is provided with a sliding cavity, threads are formed in the sliding cavity, a corresponding rotating rod (39) is inserted into the annular embedded rack body through the sliding cavity, a spring (41) is fixedly connected to the outer surface of the corresponding rotating rod (39), a first motor is fixedly connected to the outer end of the corresponding rotating rod (39), an auxiliary gear (40) is fixedly connected to the bottom end of the corresponding rotating rod (39), a hollow gear (35) is connected to one end of the auxiliary gear (40) in a meshed mode, the hollow gear (35) is fixedly installed on the inner wall of the annular embedded rack body (26), and the annular embedded rack body (26) is meshed with the hollow gear (35) through the auxiliary gear (40) to be in a synchronous rotation state with the auxiliary gear (40);
The core rod fixing assembly comprises a threaded annular groove (36) formed in one end, far away from the auxiliary gear (40), of the hollow gear (35), a plurality of L-shaped clamping plates (37) which are symmetrical with each other in the center of the hollow gear (35) are connected with the front end of the hollow gear (35) in a sliding mode through the threaded annular groove (36), a rotating pipe is fixedly connected to the joint of each L-shaped clamping plate (37) and the threaded annular groove (36), and a sliding rail frame fixedly installed on the inner wall of the hollow installation frame (27) is connected with the other end of each L-shaped clamping plate (37) in a sliding mode;
The core rod fixing assembly further comprises a plurality of groups of core rod clamping blocks (38) fixedly connected to one end, far away from the core rod inserting base (29), of the L-shaped clamping plates (37), elastic core rod clamping pull ropes (28) are inserted between every two of the plurality of groups of core rod clamping blocks (38), the plurality of groups of core rod clamping blocks (38) are spliced through the plurality of core rod clamping pull ropes (28) to form a ring original-state clamping part, and the axis of the ring original-state clamping part coincides with the axis of the hollow gear (35);
The mandrel fixing assembly further comprises a telescopic rod (30) fixedly connected to the outer end of the annular jogging frame (26), a fit inserting rod (31) is fixedly connected to the other end of the telescopic rod (30), an L-shaped mechanism formed by the telescopic rod (30) and the fit inserting rod (31) is arranged outside the annular jogging frame (26), the mandrel fixing assembly further comprises a corresponding slot formed in the left side of one end, close to the special-shaped steel tube drawing frame (2), of the drawing trolley (6), a cavity inserting block (32) is fixedly connected to the bottom end of the slot, and the inner cavity of the cavity inserting block (32) is matched with the fit inserting rod (31); a magnet for magnetically attracting the metal port of the fit plug rod (31) is fixedly arranged at the bottom end of the inner part of the cavity plug block (32);
The drawing trolley track limiting mechanism comprises two clamping blocks (10), the two clamping blocks (10) are respectively and fixedly connected to the left end and the right end of the limiting baffle (8), two groups of second guide rail rods (12) are fixedly connected to one side of each clamping block (10) which faces the special-shaped steel pipe drawing frame (2), a group of first rotating wheels (51) are respectively and rotatably connected to the left end and the right end of the lower part of the joint of the positioning drawing frame (1) and the special-shaped steel pipe drawing frame (2), a group of second rotating wheels (52) are arranged on one side, facing the special-shaped steel pipe drawing frame (2), of each clamping block (10), a chain (11) is wound on the outer surfaces of the first rotating wheels (51) and the second rotating wheels (52) which are positioned on the same side on the left side or the right side of the device, and one end of each group of the first rotating wheels (51) is fixedly connected with a second motor;
The drawing trolley track limiting mechanism comprises a first guide rail rod (12) and a second guide rail rod (10), wherein the first guide rail rod is fixedly connected with a first sliding groove plate (14) which is connected to the outer surface of the first guide rail rod in a sliding mode, the second guide rail rod is fixedly connected with a second sliding groove plate (14) which is connected to each clamping block (10), one end of the second sliding groove plate (14) is fixedly connected with an auxiliary chain block (13), one end of the auxiliary chain block (13) is rotatably connected with a small inserting rod, one end of the small inserting rod is rotatably connected with an auxiliary sliding block (15), the auxiliary sliding block (15) is vertically and slidably connected to the inner portion of the first sliding groove plate (14), and the first sliding groove plate (14) is fixedly installed at the bottom end of the drawing trolley (6).
2. The special-shaped steel drawing device according to claim 1, wherein the special-shaped steel pipe drawing assembly comprises two groups of installation positioning plates (3), the two groups of installation positioning plates (3) are respectively and fixedly connected to the left side and the right side of the top end of the special-shaped steel pipe drawing frame (2), two groups of clamping assemblies (16) are inserted into the installation positioning plates (3), the left and the right groups of clamping assemblies (16) which are positioned on the same side before and after the installation positioning plates (3) are fixedly connected with the same positioning bolt ring (19), the installation positioning plates (3) and the two groups of clamping assemblies (16) inserted into the installation positioning plates are inserted into the installation positioning plates through threaded inserted rods (17) which are in threaded connection, hollow drawing blocks (18) are inserted into the two groups of positioning bolt rings (19), and the hollow drawing blocks (18) are fixedly arranged on the top end of the special-shaped steel pipe drawing frame (2); every positioning bolt ring (19) is fixed and is kept away from the one end that draws piece (18) in cavity, the inside that draws piece (18) is drawn through cavity fixed mounting and is drawn mould (20), play mouth of pipe (21) have been seted up to the rear end of drawing mould (20), and the radius of exit tube mouth (21) that the rear end was seted up is less than the radius of inserting the mouth of pipe of intaking of special-shaped steel pipe blank in special-shaped steel pipe drawing frame (2) that are located the front end.
3. The special-shaped steel drawing device according to claim 2, wherein a double-layer buffer layer (22) is fixedly connected to the circumferential side wall of the drawing die (20) close to the hollow drawing block (18), the double-layer buffer layer (22) is fixedly installed on the inner wall of the hollow drawing block (18), and a plurality of groups of rubber marbles (23) are slidingly connected to the inside of the double-layer buffer layer (22) through a plurality of groups of arranged slideways.
4. Profiled steel drawing device according to claim 1, characterized in that the device further comprises a mandrel clamping and stabilizing assembly comprising a buffer clamping frame (33) fixedly connected to one end of the mandrel insertion base (29) penetrating through the hollow mounting frame (27) and a plurality of groups of air bags (34) fixedly connected to the inside of the buffer clamping frame (33), wherein the inside of the buffer clamping frame (33) is in a hollow shape.
5. A method for drawing profiled steel sheet using the apparatus as claimed in any one of claims 1 to 4, comprising the steps of:
S1: inserting a special-shaped steel tube blank from the front end of the special-shaped steel tube drawing frame (2), inserting a core rod section into a core rod clamping mechanism from front to back, controlling the hydraulic telescopic assembly (9) and the drawing trolley track limiting mechanism to be opened, driving the drawing trolley (6) to move towards the direction close to the special-shaped steel tube drawing frame (2) according to the position of the central axis of the device in the front-back direction, and further enabling the core rod to be driven by the drawing trolley to be inserted into a hollow inner cavity of the special-shaped steel tube blank and controlling the hydraulic telescopic assembly (9) and the drawing trolley track limiting mechanism to stop;
S2: the core rod clamping mechanism and the core rod fixing assembly are controlled to simultaneously clamp and fix the core rod, so that the core rod is enabled to be
Fixing the rod and one end of a special-shaped steel tube blank to be drawn;
S3: controlling the hydraulic telescopic assembly (9) and the drawing trolley track limiting mechanism to be opened again, driving the drawing trolley (6) to move towards a direction away from the special-shaped steel pipe drawing frame (2), and further enabling the special-shaped steel pipe blank to gradually pass through the special-shaped steel pipe drawing assembly from front to back by pulling a mandrel spliced with the mandrel clamping mechanism;
S4: after the drawing of the special-shaped steel pipe blank is finished, stopping the hydraulic telescopic assembly and the drawing trolley track limiting mechanism, controlling the mandrel clamping mechanism and the mandrel fixing mechanism to separate from the mandrel, and rolling the special-shaped steel pipe obtained by drawing down to the surface of the turnover bin gate (42) along the inclined channel of the inclined conductive plate (4) to finish the collection of the special-shaped steel pipe;
s5: and repeating the steps S1-S4 to finish drawing of the plurality of special-shaped steel pipes.
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| CN202311065419.0A CN117548513B (en) | 2023-12-01 | 2023-12-01 | Special-shaped steel drawing device and drawing method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311065419.0A CN117548513B (en) | 2023-12-01 | 2023-12-01 | Special-shaped steel drawing device and drawing method |
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| CN117548513B true CN117548513B (en) | 2024-05-07 |
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| JP2011011251A (en) * | 2009-07-06 | 2011-01-20 | Sumitomo Metal Ind Ltd | Cold drawing method for pipe, cold-drawn pipe, and method for producing high strength oil well pipe |
| CN209189509U (en) * | 2018-11-13 | 2019-08-02 | 无锡华夏机械制造有限公司 | A kind of shape tube drawbench |
| CN109834123A (en) * | 2019-04-08 | 2019-06-04 | 浙江增诚钢管有限公司 | A kind of Tube Drawing clamp system |
| CN217616881U (en) * | 2022-06-21 | 2022-10-21 | 太原恒信科达重工成套设备有限公司 | Core rod telescopic device for pipe cold-drawing machine |
| CN218945950U (en) * | 2022-11-22 | 2023-05-02 | 青山钢管有限公司 | Draw trolley for reducing head-making steel pipe |
| CN116371953A (en) * | 2023-03-04 | 2023-07-04 | 浙江丰原型钢科技有限公司 | Steel special-shaped drawing rust removing clamp and use method |
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