CN112024626A - Special-shaped steel drawing method and drawing device - Google Patents
Special-shaped steel drawing method and drawing device Download PDFInfo
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- CN112024626A CN112024626A CN202010817671.2A CN202010817671A CN112024626A CN 112024626 A CN112024626 A CN 112024626A CN 202010817671 A CN202010817671 A CN 202010817671A CN 112024626 A CN112024626 A CN 112024626A
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- die sleeve
- limiting seat
- sleeve
- cylinder
- pipe
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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
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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
- B21C1/27—Carriages; Drives
- B21C1/30—Drives, e.g. carriage-traversing mechanisms; Driving elements, e.g. drawing chains; Controlling the drive
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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
- B21C1/34—Guiding or supporting the material or mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention discloses a drawing method and a drawing device for special-shaped steel, wherein the drawing method for special-shaped steel comprises the following steps: horizontally limiting two ends of the pipe blank, wherein one end of the pipe blank is positioned in a gap between an outer die sleeve and an inner die sleeve of a die sleeve; the die sleeve set is moved along the axial direction of the pipe blank, so that the die sleeve set passes through the whole pipe blank; simultaneously, the die sleeve assembly of the special-shaped steel drawing device can synchronously move the outer die sleeve and the inner die sleeve to accurately draw the special-shaped pipe, and the outer die sleeve and the inner die sleeve can move to share one driving source, so that the structure is compact.
Description
Technical Field
The invention relates to the technical field of preparation of special-shaped steel pipes, in particular to a special-shaped steel drawing method and a drawing device.
Background
With the higher requirements of industries such as engineering machinery, ship petroleum and the like on steel pipes, high-precision and high-performance cold-drawn special pipes are beginning to be applied in a large quantity. When the steel pipe is cold-drawn by adopting a conventional method, one end part of the steel pipe needs to be grabbed and clamped by a clamp during cold drawing, the size of the section of the steel pipe is changed after cold drawing, the shape of the section of the steel pipe is changed, and the section of the steel pipe is cut off as waste materials to cause certain material loss.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, one end of a special-shaped steel pipe needs to be grabbed and clamped by a clamp when the special-shaped steel pipe is cold-drawn, the section of the steel pipe is deformed after cold-drawn and needs to be cut off, so that material waste is caused, and the special-shaped steel drawing method and the special-shaped steel drawing device are provided.
In order to achieve the purpose, the invention adopts the following technical scheme:
a special-shaped steel drawing method is characterized by comprising the following steps:
a1: horizontally limiting two ends of the pipe blank, wherein one end of the pipe blank is positioned in a gap between an outer die sleeve and an inner die sleeve of a die sleeve;
a2: and moving the die sleeve group along the axial direction of the tube blank to enable the die sleeve group to pass through the whole tube blank.
The invention also discloses a drawing device based on the special-shaped steel drawing method, which comprises a rack, a fixed limiting seat fixedly positioned on the rack, a movable limiting seat connected to the rack in a sliding manner and a die sleeve assembly, wherein the die sleeve assembly is positioned between the fixed limiting seat and the movable limiting seat, the die sleeve assembly comprises an outer die sleeve and an inner die sleeve, and the fixed limiting seat and the movable limiting seat are respectively provided with a through hole for accommodating the inner die sleeve to pass through.
Furthermore, two ends of the inner die sleeve are fixedly connected with tooth bracing strips, the inner die sleeve and the tooth bracing strips form a closed ring shape, the rack is provided with a gear meshed with the tooth bracing strips, and the gear is rotatably connected with the rack through a lower rotating shaft;
furthermore, the fixed cover is fixedly sleeved outside the outer die sleeve, the fixed cover is connected with the rack in a sliding mode through a connecting frame, and the outer die sleeve and the inner die sleeve move synchronously.
As preferred scheme, the top of frame sets up the slide bar that driving chain and level set up, the link passes through sliding sleeve and slide bar sliding connection, sliding sleeve fixed surface sets up the rack with the meshing of driving chain horizontal part, the driving chain passes through sprocket feed, the sprocket is through last pivot and frame swivelling joint, go up and be connected through the hold-in range between pivot and the lower pivot, but go up pivot and lower pivot synchronous revolution, realize outer die sleeve and interior die sleeve synchronous motion.
Preferably, in order to keep the tooth brace and the inner die sleeve to move in the horizontal direction, the rack is provided with a horizontal sleeve outside the tooth brace, one end of the horizontal sleeve extends into the billet, and the other end of the horizontal sleeve is connected with the rack in a sliding manner.
Furthermore, the connecting frame is provided with a synchronous cylinder for connecting or separating the movable limiting seat. Preferably, the top of the movable limiting seat is provided with a synchronous groove, and the synchronous groove corresponds to a synchronous clamping block at the working end of the synchronous cylinder. The synchronous clamping block at the working end of the synchronous cylinder is clamped into the synchronous groove, the connecting frame is connected with the movable limiting seat, the synchronous clamping block at the working end of the synchronous cylinder leaves the synchronous groove, and the connecting frame is separated from the movable limiting seat.
Furthermore, the frame is provided with a limiting cylinder for limiting the horizontal movement of the movable limiting seat. Preferably, the side of the movable limiting seat is provided with a limiting hole, the frame is provided with a limiting cylinder on the side of the movable limiting seat, and the limiting hole corresponds to a limiting block at the working end of the limiting cylinder. The limiting block of the working end of the limiting cylinder is clamped into the limiting hole, the rack is connected with the movable limiting seat, the limiting block of the working end of the limiting cylinder leaves the limiting hole, and the rack is separated from the movable limiting seat.
Furthermore, the surface of the movable limiting seat opposite to the die sleeve component is provided with a contact inductor, and the contact inductor corresponds to a gap between the outer die sleeve and the inner die sleeve. And the contact inductor controls a switch connected with the synchronous cylinder and the limiting cylinder.
When one end of the steel billet contacts with the contact inductor, the synchronous cylinder and the limiting cylinder start to act, the synchronous fixture block at the working end of the synchronous cylinder leaves the synchronous groove, the connecting frame is separated from the movable limiting seat, the limiting block at the working end of the limiting cylinder is clamped into the limiting hole, the rack is connected with the movable limiting seat, the movable limiting seat is fixed in position, and the steel billet is fixed between the fixed limiting seat and the movable limiting seat.
Preferably, the fixed limiting seat comprises a sleeve fixedly connected with the rack, an adjusting cylinder and a contact block in contact with the billet, the contact block forms a through hole for fixing the limiting seat, and the adjusting cylinder is positioned between the inner edge of the sleeve and the contact block. The service condition of the adjusting cylinder is that the inner wall of the outer die sleeve is parallel to the axis of the pipe blank, and the adjusting cylinder is used for adjusting the position of the contact block so as to adapt to the extrusion displacement of the inner die sleeve to the contact block through the through hole of the fixed limiting seat.
Preferably, the adjusting cylinder comprises a cylinder body, a piston, a communicating pipe and a movable rod, the piston is arranged in the cylinder body and divides the interior of the cylinder body into two spaces, the communicating pipe is embedded in the piston and communicated with the two spaces of the cylinder body, and an electric control valve is arranged on the communicating pipe. The one end fixed connection sleeve of cylinder body, the one end fixed connection movable rod's of piston one end, the other end of movable rod runs through cylinder body and fixed connection contact piece.
The infrared inductor used for inducing the inner die sleeve is arranged on one side of the through hole of the contact block. When the inner die sleeve enters the through hole of the fixed limiting seat, the electric control valve is opened, the piston generates position change in the cylinder body, and then the liquid medium between the two spaces in the cylinder body flows through the communicating pipe, at the moment, the adjusting structure is in a working state, and the position of the contact block can be changed; when the inner die sleeve does not enter the through hole of the fixed limiting seat, the electric control valve is closed, the liquid medium between the two spaces in the cylinder body cannot flow through the communicating pipe, the piston does not generate position change in the cylinder body, the adjusting structure is in an out-of-operation state, and the position of the contact block is fixed.
The method for drawing the steel blank by the special-shaped steel drawing device comprises the following steps:
b1: one end of the pipe blank is abutted against a contact block of a fixed limiting seat, and the other end of the pipe blank is positioned in a gap between an outer die sleeve and an inner die sleeve of a die sleeve to complete horizontal limiting of two ends of the pipe blank;
b2: the lower rotating shaft or the upper rotating shaft is driven to rotate, so that the die sleeve assembly moves along the axis direction of the pipe blank, when the movable limiting seat is contacted with the end face of the pipe blank, the movable limiting seat stops moving, the fixed limiting seat and the movable limiting seat carry out horizontal limiting on two ends of the pipe blank at the moment, and the die sleeve assembly continues to move along the axis direction of the pipe blank;
b3: when an inner die sleeve of the die sleeve assembly enters the through hole of the fixed limiting seat, the adjusting cylinder works, and the distance between the contact block and the sleeve is adjusted to adapt to the size change of the pipe blank.
The invention has the beneficial effects that:
1. this dysmorphism steel is pulled out and is drawn device and carry on spacingly to the both ends of steel pipe, and the die sleeve subassembly removes, carries out axial pull out processing to the special-shaped pipe, can save the pipe tongs or the pipe clamp part among the current device of pulling out, reduces because the inhomogeneous problem of pipe end shaping of the grab clamp formation of pipe wall.
2. But this dysmorphism steel pulling device's die sleeve subassembly is to outer die sleeve and interior die sleeve synchronous motion, carries out accurate pulling to the special-shaped pipe, and the removal of outer die sleeve and interior die sleeve shares a driving source, compact structure.
Drawings
FIG. 1 is a drawing step diagram of the drawing method of the special-shaped steel;
FIG. 2 is a schematic structural view of the special-shaped steel drawing device;
FIG. 3 is a schematic structural view of the die sleeve of the special-shaped steel drawing device in the middle of a pipe blank;
FIG. 4 is a schematic structural view of the side of the fixed limiting seat of the deformed steel drawing device;
FIG. 5 is a schematic structural view of an adjusting cylinder of the special-shaped steel drawing device;
FIG. 6 is a connection diagram of a control part of the special-shaped steel drawing device;
FIG. 7 is a schematic view of the outer die case of the device for drawing deformed steel bar, which is attached to the fixed position-limiting base when the inner wall of the outer die case is not parallel to the axial direction;
fig. 8 is a schematic structural view of the inner die sleeve approaching the fixed limiting seat in the special-shaped steel drawing device when the inner wall of the outer die sleeve is not parallel to the axial direction.
In the figure: 1. a frame; 2. fixing a limiting seat; 3. moving the limiting seat; 4. an outer die sleeve; 5. an inner die sleeve; 6. fixing a sleeve; 7. tooth bracing strips; 8. a gear; 9. a lower rotating shaft; 10. a billet; 11. a connecting frame; 12. a sliding sleeve; 13. a rack; 14. a drive chain; 15. a sprocket; 16. an upper rotating shaft; 17. a synchronous belt; 18. a slide bar; 19. a synchronous cylinder; 20. a limiting cylinder; 21. a sleeve; 22. an adjusting cylinder; 23. a contact body; 24. a horizontal sleeve; 31. a limiting hole; 32. a synchronization slot; 33. a contact sensor; 221. a cylinder body; 222. a piston; 223. a communicating pipe; 224. an electrically controlled valve; 225. a movable rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1
Referring to fig. 1, a method for drawing a special-shaped steel is characterized by comprising the following steps:
a1: horizontally limiting two ends of the pipe blank, wherein one end of the pipe blank is positioned in a gap between an outer die sleeve and an inner die sleeve of a die sleeve;
a2: and moving the die sleeve group along the axial direction of the tube blank to enable the die sleeve group to pass through the whole tube blank.
Carry on spacingly to the both ends of steel pipe in this deformed steel method of drawing, the die sleeve subassembly removes, carries out axial drawing processing to the deformed pipe, can save to draw and carry out the grabs to the parison tip in drawing, reduces because the inhomogeneous problem of pipe end shaping of the grabs the clamp formation of pipe wall.
Example 2
Referring to fig. 2 and 3, the pulling device in this embodiment includes a frame 1, a fixed limiting seat 2 fixedly located on the frame 1, a movable limiting seat 3 slidably connected to the frame 1, and a die sleeve assembly, where the die sleeve assembly is located between the fixed limiting seat 2 and the movable limiting seat 3, the die sleeve assembly includes an outer die sleeve 4 and an inner die sleeve 5, and the fixed limiting seat 2 and the movable limiting seat 3 are both provided with through holes for accommodating the inner die sleeve 5 to pass through.
Furthermore, the two ends of the inner die sleeve 5 are fixedly connected with tooth pull strips 7, the inner die sleeve 5 and the tooth pull strips 7 form a closed ring shape, the rack is provided with a gear 8 meshed with the tooth pull strips 7, and the gear 8 is rotatably connected with the rack 1 through a lower rotating shaft 9. The fixed cover 6 of fixed cup joint in the outside of outer die sleeve 4, fixed cover 6 passes through link 11 and frame 1 sliding connection, outer die sleeve 4 and interior die sleeve simultaneous movement.
Specifically, refer to fig. 2, the top of frame 1 sets up the slide bar 18 that driving chain 14 and level set up, link 11 passes through sliding sleeve 12 and slide bar 18 sliding connection, sliding sleeve 12 fixed surface sets up the rack 13 with the meshing of 14 horizontal parts of driving chain, driving chain 14 passes through sprocket 15 transmission, sprocket 15 is through last pivot 16 and frame 1 swivelling joint, go up pivot 16 and be connected through hold-in range 17 between the lower pivot 9, but go up pivot 16 and lower pivot 9 synchronous revolution, set up driving motor in last pivot 16 or lower pivot 9 one end, can realize outer mould cover 4 and interior mould cover synchronous motion.
In this embodiment, a driving motor is disposed at one end of the lower rotating shaft 9, the driving motor can drive the lower rotating shaft 9 and the upper rotating shaft 16 to rotate synchronously, wherein the lower rotating shaft 9 drives the gear 8 to rotate, the gear 8 drives the tooth brace 7 to move, the inner die sleeve 5 is pulled to move, the upper rotating shaft 16 drives the chain wheel 15 to rotate, the chain wheel 15 drives the driving chain 14 to move, the driving chain 14 drives the rack 13 to move horizontally, and the connecting frame 11 and the outer die sleeve 4 follow the rack 13 to move horizontally. The outer die sleeve 4 and the inner die sleeve 5 synchronously move horizontally along the axial direction of the pipe blank 10.
In this embodiment, the rack 1 is provided with a horizontal sleeve 24 outside the tooth brace 7, one end of the horizontal sleeve 24 extends to the inside of the billet 6, and the other end of the horizontal sleeve 24 is slidably connected with the rack 1. The horizontal sleeve 24 is pushed to slide when the inner die sleeve 5 moves, so as to keep the tooth stay 7 and the inner die sleeve 5 moving in the horizontal direction.
Further, the connecting frame 11 is provided with a synchronous cylinder 19 for connecting or separating the movable limiting seat 3. In this embodiment, a synchronization groove 32 is disposed at the top of the movable limiting seat 3, and the synchronization groove 32 corresponds to a synchronization block at the working end of the synchronization cylinder 19. The synchronous fixture block at the working end of the synchronous cylinder 19 is clamped into the synchronous groove 32, the connecting frame 11 is connected with the movable limiting seat 3, the synchronous fixture block at the working end of the synchronous cylinder 19 leaves the synchronous groove 32, and the connecting frame 11 is separated from the movable limiting seat 3.
Further, the frame 1 is provided with a limiting cylinder 20 for limiting the horizontal movement of the movable limiting seat 3. In this embodiment, the side of moving the spacing seat 3 sets up spacing hole 31, frame 1 sets up spacing cylinder 20 in moving the spacing seat 3 side, spacing hole 31 corresponds with the stopper of spacing cylinder 20 working end. The limiting block at the working end of the limiting cylinder 20 is clamped into the limiting hole 31, the rack 1 is connected with the movable limiting seat 3, the limiting block at the working end of the limiting cylinder 20 leaves the limiting hole 31, and the rack 1 is separated from the movable limiting seat 3.
Further, the surface of the movable limiting seat 3 opposite to the die sleeve component is provided with a contact inductor 33, and the contact inductor 33 corresponds to a gap between the outer die sleeve 4 and the inner die sleeve 5. The contact sensor 33 controls the switch connecting the synchronizing cylinder 19 and the limit cylinder 20.
When one end of the steel blank 10 is not in contact with the contact sensor 33, the synchronous clamping block at the working end of the synchronous cylinder 19 is clamped inside the synchronous groove 32, the connecting frame 11 is connected with the movable limiting seat 3, the limiting block at the working end of the limiting cylinder 20 does not enter the limiting hole 31, and the rack 1 is separated from the movable limiting seat 3. At this time, the movable limiting seat 3 can move together with the outer die sleeve 4.
When one end of the steel billet 10 contacts with the contact sensor 33, the synchronous cylinder 19 and the limiting cylinder 20 start to act, the synchronous clamping block at the working end of the synchronous cylinder 19 leaves the synchronous groove 32, the connecting frame 11 is separated from the movable limiting seat 3, the limiting block at the working end of the limiting cylinder 20 is clamped into the limiting hole 31, the rack 1 is connected with the movable limiting seat 3, the movable limiting seat 3 is fixed in position, and the steel billet 10 is fixed between the fixed limiting seat 2 and the movable limiting seat 3.
The contact sensor 33 in this embodiment is a pressure sensor, and the pulling device further comprises a control part including a controller, wherein a signal receiving end of the controller is electrically connected with a signal output end of the contact sensor 33, and a signal output end of the controller is electrically connected with switches of the synchronous cylinder 19 and the limiting cylinder 20. When the pipe blank 10 applies pressure to the part of the movable limiting seat 3 provided with the contact sensor 33, the pressure sensor generates a sensing signal, and the controller of the control part of the drawing device controls the synchronous cylinder 19 and the limiting cylinder 20 to act.
The drawing process of the special-shaped steel drawing device for the steel billet comprises the following steps:
c1: one end of the pipe blank 11 is abutted against the contact block 23 of the fixed limiting seat 2, and the other end of the pipe blank 11 is positioned in a gap between the outer die sleeve 4 and the inner die sleeve 5 of the die sleeve, so that the horizontal limiting of the two ends of the pipe blank 11 is completed.
C2: the pivot 9 rotates under the driving motor drive, make and remove spacing seat 3, adventitia cover 4 and interior die sleeve 5 remove along the axis direction horizontal migration of pipe embryo 11, when removing the terminal surface contact of spacing seat 3 with pipe embryo 11, contact inductor 33 passes through induction signal controller control synchronization cylinder 19 and the action of spacing cylinder 20, make and remove spacing seat 3 and be connected with frame 1, fixed spacing seat 2 carries out the horizontally spacing with removing spacing seat 3 to pipe embryo 11 both ends this moment, under the driving motor drive, the die sleeve subassembly continues to remove along the axis direction of pipe embryo 11, pull out and draw processing to the pipe embryo.
C3: referring to fig. 7, when the outer film sleeve 4 in the die sleeve assembly contacts with the end face of the fixed limiting seat 2, the driving motor stops working, the drawn pipe fitting is taken down, and the unprocessed end part of the drawn pipe fitting is cut off to obtain the drawn pipe fitting.
In the embodiment, the special-shaped steel drawing device limits the two ends of the steel pipe, the die sleeve assembly moves, and the special-shaped pipe is subjected to axial drawing, so that pipe grippers or pipe clamp parts in the existing drawing device can be saved, and the problem of uneven pipe end forming caused by the gripping of the pipe wall is solved; simultaneously, the die sleeve assembly of the special-shaped steel drawing device can synchronously move the outer die sleeve and the inner die sleeve to accurately draw the special-shaped pipe, and the outer die sleeve and the inner die sleeve can move to share one driving source, so that the structure is compact.
Example 3
Referring to fig. 4, unlike embodiment 2, the fixed limiting seat 2 of the present embodiment includes a sleeve 21 fixedly connected to the frame 1, a plurality of adjusting cylinders 22, and contact blocks 23 contacting the billet 10, the number of the contact blocks 23 is multiple, the contact blocks 23 form through holes of the fixed limiting seat 2, and the adjusting cylinders 22 are located between the inner edge of the sleeve 21 and the contact blocks 23.
It should be noted that fig. 4 is a reference diagram, which is one of various cross-sectional shapes of the special pipe, and the cross-section of the special pipe applied to the drawing device of the present invention is not limited to this one.
In this embodiment, referring to fig. 5, the adjustment cylinder 22 includes a cylinder 221, a piston 222, a communication pipe 223, and a movable rod 225, the piston 222 dividing the inside of the cylinder 221 into two spaces is disposed inside the cylinder 221, the communication pipe 223 is fitted to the piston 222, the communication pipe 223 communicates the two spaces of the cylinder 221, and an electric control valve 224 is disposed on the communication pipe 223. One end of the cylinder 221 is fixedly connected with the sleeve 21, one end of the piston 222 is fixedly connected with one end of the movable rod 225, and the other end of the movable rod 225 penetrates through the cylinder 221 and is fixedly connected with the contact block 23.
The use condition of the adjusting cylinder 22 in this embodiment is that the inner wall of the outer die sleeve 4 is parallel to the axis of the pipe blank 10, and the inner die sleeve 5 continues to use the adjusting cylinder 22 to adjust the position of the contact block 23, so as to adapt to the extrusion displacement of the inner die sleeve 5 to the contact block 23 through the through hole of the fixed limiting seat 2.
And an infrared inductor for inducing the inner die sleeve 5 is arranged on one side of the through hole of the contact block 23. Referring to fig. 6, the control portion of the pulling apparatus in this embodiment further includes an infrared sensor and an electric control valve 224, the signal receiving end of the controller is electrically connected to the signal output end of the infrared sensor, and the signal output end of the controller is electrically connected to the electric control valve 224.
When the inner die sleeve 5 enters the through hole of the fixed limiting seat 2, the infrared sensor senses the inner die sleeve 5, the electric control valve 224 is opened, the piston 222 generates position change in the cylinder body 221, the liquid medium between the two spaces in the cylinder body 22 flows through the communicating pipe 223, at the moment, the adjusting structure 22 is in a working state, and the position of the contact block 23 can be changed; when the inner mold 5 does not enter the through hole of the fixed stopper 2, the electric control valve 224 is closed, the liquid medium between the two spaces inside the cylinder 22 does not flow through the communication pipe 223, the piston 222 does not change its position inside the cylinder 221, the adjusting structure 22 is in the non-operating state, and the position of the contact block 23 is fixed.
In this embodiment, the process of drawing the billet by the deformed steel drawing device includes the following steps:
d1: one end of the pipe blank 11 is abutted against the contact block 23 of the fixed limiting seat 2, and the other end of the pipe blank 11 is positioned in a gap between the outer die sleeve 4 and the inner die sleeve 5 of the die sleeve, so that the horizontal limiting of the two ends of the pipe blank 11 is completed.
D2: the pivot 9 rotates under the driving motor drive, make and remove spacing seat 3, adventitia cover 4 and interior die sleeve 5 remove along the axis direction horizontal migration of pipe embryo 11, when removing the terminal surface contact of spacing seat 3 with pipe embryo 11, contact inductor 33 passes through induction signal controller control synchronization cylinder 19 and the action of spacing cylinder 20, make and remove spacing seat 3 and be connected with frame 1, fixed spacing seat 2 carries out the horizontally spacing with removing spacing seat 3 to pipe embryo 11 both ends this moment, under the driving motor drive, the die sleeve subassembly continues to remove along the axis direction of pipe embryo 11, pull out and draw processing to the pipe embryo.
D3: referring to fig. 8, when the inner die sleeve 5 enters the through hole of the fixed limiting seat 2 to continue processing the pipe blank 10, the diameter of the pipe blank 10 becomes large, the adjusting cylinder 22 works at the moment, the contact block 23 can move along with the diameter change of the pipe blank 10, the adjusting cylinder 22 can adjust the distance between the contact block 23 and the sleeve 21 to adapt to the size change of the pipe blank 11, and when the outer die sleeve 4 in the die sleeve assembly contacts with the end face of the fixed limiting seat 2, the driving motor stops working to obtain a whole complete drawing pipe fitting.
In this embodiment, the special-shaped steel drawing device can draw the whole pipe blank under the working condition that the inner wall of the outer die sleeve 4 is parallel to the axis of the pipe blank 10, thereby saving the procedure of cutting off the end part of the pipe blank 10 in embodiment 1 and avoiding the waste of the end part of the pipe blank.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A special-shaped steel drawing method is characterized by comprising the following steps:
a1: horizontally limiting two ends of the pipe blank, wherein one end of the pipe blank is positioned in a gap between an outer die sleeve and an inner die sleeve of a die sleeve;
a2: and moving the die sleeve group along the axial direction of the tube blank to enable the die sleeve group to pass through the whole tube blank.
2. The drawing device of the drawing method of the deformed steel according to claim 1, which comprises a frame (1), a fixed limiting seat (2) fixedly arranged on the frame (1), a movable limiting seat (3) connected to the frame (1) in a sliding manner, and a die sleeve assembly, wherein the die sleeve assembly is arranged between the fixed limiting seat (2) and the movable limiting seat (3), the die sleeve assembly comprises an outer die sleeve (4) and an inner die sleeve (5), and the fixed limiting seat (2) and the movable limiting seat (3) are provided with through holes for accommodating the inner die sleeve (5) to pass through;
the two ends of the inner die sleeve (5) are fixedly connected with tooth bracing pieces (7), the inner die sleeve (5) and the tooth bracing pieces (7) form a closed ring shape, the rack is provided with a gear (8) meshed with the tooth bracing pieces (7), and the gear (8) is rotatably connected with the rack (1) through a lower rotating shaft (9);
a fixed sleeve (6) is fixedly sleeved outside the outer die sleeve (4), the fixed sleeve (6) is connected with the rack (1) in a sliding mode through a connecting frame (11), and the outer die sleeve (4) and the inner die sleeve move synchronously;
the connecting frame (1) is provided with a synchronous cylinder (19) which is used for connecting or separating the movable limiting seat (3), the frame (1) is provided with a limiting cylinder (20) which is used for limiting the horizontal movement of the movable limiting seat (3), the surface of the movable limiting seat (3) opposite to the die sleeve component is provided with a contact inductor (33), and the contact inductor (33) corresponds to the gap between the outer die sleeve (4) and the inner die sleeve (5).
3. A shaped steel drawing device according to claim 2, characterized in that a driving chain (14) and a horizontally arranged slide bar (18) are arranged above the machine frame (1), the connecting frame (1) is slidably connected with the slide bar (18) through a sliding sleeve (12), the sliding sleeve (12) is provided with a rack (13) which is engaged with the horizontal part of the driving chain (14) in a surface fixing manner, the driving chain (14) is driven by a chain wheel (15), the chain wheel (15) is rotatably connected with the machine frame (1) through an upper rotating shaft (16), and the upper rotating shaft (16) is connected with the lower rotating shaft (9) through a synchronous belt (17).
4. The device for drawing shaped steel according to claim 2, characterized in that a synchronizing groove (32) is arranged at the top of the movable limiting seat (3), and the synchronizing groove (32) corresponds to a synchronizing block at the working end of the synchronizing cylinder (19);
a limiting hole (31) is formed in the side face of the movable limiting seat (3), a limiting cylinder (20) is arranged on the side face of the movable limiting seat (3) of the rack (1), and the limiting hole (31) corresponds to a limiting block at the working end of the limiting cylinder (20);
the contact inductor (33) controls the switch of the synchronous cylinder (19) and the limit cylinder (20).
5. The special-shaped steel drawing device according to claim 2, 3 or 4, characterized in that the fixed limiting seat (2) comprises a sleeve (21) fixedly connected with the frame (1), an adjusting cylinder (22) and a contact block (23) contacted with the billet (10), the adjusting cylinder (22) is positioned between the inner edge of the sleeve (21) and the contact block (23), and the adjusting cylinder (22) is used for adjusting the position of the contact block (23) to adapt to the extrusion displacement of the inner die sleeve (5) to the contact block (23) through a through hole of the fixed limiting seat (2).
6. A special-shaped steel drawing device according to claim 5, characterized in that the adjusting cylinder (22) comprises a cylinder body (221), a piston (222), a communication pipe (223) and a movable rod (225), the piston (222) which divides the interior of the cylinder body (221) into two spaces is arranged in the cylinder body (221), the communication pipe (223) is embedded in the piston (222), the communication pipe (223) communicates the two spaces of the cylinder body (221), and an electric control valve (224) is arranged on the communication pipe (223);
one end of the cylinder body (221) is fixedly connected with the sleeve (21), one end of the piston (222) is fixedly connected with one end of the movable rod (225), and the other end of the movable rod (225) penetrates through the cylinder body (221) and is fixedly connected with the contact block (23).
7. A shaped steel drawing device according to claim 2, characterized in that the frame (1) is provided with a horizontal sleeve (24) outside the tooth bar (7), one end of the horizontal sleeve (24) extends to the inside of the billet (6), and the other end of the horizontal sleeve (24) is connected with the frame (1) in a sliding way.
8. The drawing method of the deformed steel drawing apparatus according to claim 6, comprising the steps of:
b1: one end of the pipe blank (11) is abutted against a contact block (23) of the fixed limiting seat (2), and the other end of the pipe blank (11) is positioned in a gap between an outer die sleeve (4) and an inner die sleeve (5) of the die sleeve to complete horizontal limiting of two ends of the pipe blank (11);
b2: the lower rotating shaft (9) or the upper rotating shaft (16) is driven to rotate, so that the die sleeve assembly moves along the axis direction of the pipe blank (11), when the movable limiting seat (3) is in contact with the end face of the pipe blank (11), the movable limiting seat (3) stops moving, the fixed limiting seat (2) and the movable limiting seat (3) horizontally limit the two ends of the pipe blank (11), and the die sleeve assembly continues to move along the axis direction of the pipe blank (11);
b3: when an inner die sleeve (5) of the die sleeve assembly enters a through hole of the fixed limiting seat (2), the adjusting cylinder (22) works, and the distance between the contact block (23) and the sleeve (21) is adjusted to adapt to the size change of the pipe blank (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010817671.2A CN112024626A (en) | 2020-08-14 | 2020-08-14 | Special-shaped steel drawing method and drawing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010817671.2A CN112024626A (en) | 2020-08-14 | 2020-08-14 | Special-shaped steel drawing method and drawing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113351664A (en) * | 2021-06-03 | 2021-09-07 | 无锡广兴东茂科技有限公司 | Special-shaped steel drawing method and drawing device |
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| CN112024625A (en) * | 2020-08-12 | 2020-12-04 | 江苏君睿智能制造有限公司 | Special-shaped steel pipe grabbing-free pulling system and pulling method thereof |
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| JP2000288621A (en) * | 1999-04-06 | 2000-10-17 | Nippon Koshuha Steel Co Ltd | Instrument for measuring withdrawal force at wire drawing time |
| JP2005059008A (en) * | 2003-08-08 | 2005-03-10 | Nissan Motor Co Ltd | Cold drawing tool, and lubricating oil composition used therefor |
| CN101422789A (en) * | 2008-10-31 | 2009-05-06 | 陕西多伦科技发展有限公司 | High-accurate large cold drawbench |
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