CN113198863A - Pointing process and pointing device beneficial to drawing and die penetrating of steel wire - Google Patents
Pointing process and pointing device beneficial to drawing and die penetrating of steel wire Download PDFInfo
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- CN113198863A CN113198863A CN202110568665.2A CN202110568665A CN113198863A CN 113198863 A CN113198863 A CN 113198863A CN 202110568665 A CN202110568665 A CN 202110568665A CN 113198863 A CN113198863 A CN 113198863A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 184
- 239000010959 steel Substances 0.000 title claims abstract description 184
- 230000009286 beneficial effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008569 process Effects 0.000 title claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 title abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 82
- 238000003825 pressing Methods 0.000 claims abstract description 71
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 42
- 230000000694 effects Effects 0.000 claims abstract description 10
- 230000008901 benefit Effects 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 claims description 24
- 238000005491 wire drawing Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 description 7
- 238000004080 punching Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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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
- B21C5/00—Pointing; Push-pointing
- B21C5/006—Pointing; Push-pointing of solid material, e.g. wire or profiles
-
- 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
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
-
- 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
-
- 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
- B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
- B21C47/16—Unwinding or uncoiling
-
- 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
- B21C9/00—Cooling, heating or lubricating drawing material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F23/00—Feeding wire in wire-working machines or apparatus
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
- Forging (AREA)
Abstract
The invention discloses a pointing process and pointing device beneficial to drawing and die-threading of a steel wire, and belongs to the technical field of drawing and die-threading of the steel wire in deep processing of wire rods. The device comprises a rotary straightener, a fixed chuck, an electromagnetic induction heating pipe and a movable chuck which are sequentially arranged along the direction of a steel wire; the process consists of the following steps: paying off and straightening, pressing steel wires, heating the steel wires, breaking the steel wires, and drawing through a die. The invention heats the steel wire by utilizing the electromagnetic induction effect, and has the advantages of high heating speed, cleanness and no pollution. The strength of the heated steel wire is greatly reduced, the end of the steel wire can be uniformly thinned and broken only by virtue of smaller clamping force when the movable chuck driven by the lead screw moves forwards at low speed along the slide rail, a steel wire conical head beneficial to drawing and penetrating the die of the steel wire is quickly, safely and stably formed, accidents of hurting people, hurting fingers, extruding and the like when a tippling machine is used for mechanical tippling manually are avoided, and the steel wire tippling machine is simple to operate, time-saving, labor-saving, high in working efficiency, stable in operation and safe in use.
Description
Technical Field
The invention belongs to the technical field of drawing and die-threading of steel wires in deep processing of wire rods, and particularly relates to a pointing process and pointing device which are beneficial to drawing and die-threading of the steel wires, which are particularly suitable for pointing the ends of thick-specification wire rods or large-diameter steel wires.
Background
The wire rod or the steel wire needs to be sharpened in the drawing process, namely the end of the steel wire is thinned so as to be beneficial to die penetration. The current common pointing machine adopts a mechanical rolling method to carry out pointing, and the mechanical pointing has the following defects: 1. the rolling time is long; 2. the steel wire needs to rotate, when the thick steel wire is sharpened, the thick steel wire is very hard, the operation is troublesome and laborious, meanwhile, the sharp teeth of the roller are easy to hurt people in the rolling process, the potential safety hazard is caused, and the production efficiency is low; 3. after the device works for a period of time, the gap between the rollers is enlarged, the rolling burrs are increased, the fingers are easy to be stabbed, and the potential safety hazard is further increased.
Disclosure of Invention
The invention aims to provide a pointing process and a pointing device which are beneficial to drawing and punching of a steel wire aiming at the defects in the prior art. The steel wire is heated by utilizing the electromagnetic induction effect, the strength of the heated steel wire is greatly reduced, the heated steel wire can be uniformly thinned and broken by virtue of small force, and then the steel wire conical head which is beneficial to drawing and penetrating the steel wire is quickly, safely and stably formed, so that accidents of hurting people, hurting fingers, extruding and the like which are often caused by the fact that a traditional pointing machine is used for mechanical pointing manually are avoided, and the steel wire drawing and penetrating die has the advantages of being high in heating speed, high in working efficiency, stable in operation, safe to use, clean, free of pollution, simple in operation, time-saving and labor-saving.
The object of the invention can be achieved by the following technical measures:
the invention discloses a pointing device beneficial to drawing and die-punching of a steel wire, which comprises a rotary straightener, a fixed chuck, an electromagnetic induction heating pipe and a movable chuck, wherein the rotary straightener, the fixed chuck, the electromagnetic induction heating pipe and the movable chuck are sequentially arranged along the direction of the steel wire; two rows of straightening rollers are arranged in the rotary straightener in parallel up and down (a steel wire which horizontally and transversely penetrates through the rotary straightener is straightened into a straight strip, so that subsequent threading is facilitated); a wire feeding hole I is horizontally formed in the thickness direction of the fixed chuck, a pressing threaded hole I communicated with the wire feeding hole I is vertically and downwards processed from the top surface of the fixed chuck, and a wire pressing bolt I is screwed in the threaded hole I (a steel wire penetrates through the wire feeding hole I, and the rear end of the steel wire can be fixed when the downward screwing wire pressing bolt I contacts the upper surface of the pressing steel wire); the electromagnetic induction heating pipe, the timing heating switch and the induction frequency gear adjuster are connected in series with a power supply through leads to form an induction circuit, and a thermocouple is connected in parallel between the induction frequency gear adjuster and the electromagnetic induction heating pipe (the timing heating switch controls the on-off of the induction circuit, namely controls the on-off of the heating of the steel wire; a wire feeding hole II and a screw threaded hole (used for screwing a screw) are horizontally formed along the thickness direction of the movable chuck, a pressing threaded hole II communicated with the wire feeding hole II is vertically and downwards processed on the top surface of the movable chuck, a wire pressing bolt II is screwed in the threaded hole II (a steel wire penetrates through the wire feeding hole II, and when the downward screwing wire pressing bolt II contacts the upper surface of the pressing steel wire, the front end of the steel wire can be fixed), a screw is screwed in the screw threaded hole of the screw, the other end of the screw is connected with a speed reducing motor through a coupler (the speed reducing motor provides rotary power for the screw and further drives the movable chuck to move forwards and backwards to provide tension for breaking the steel wire), four sliding wheels which move forwards and backwards along a sliding rail are arranged at the bottom of the movable chuck (under the driving of the speed reducing motor and the screw, the guiding action of the sliding wheels is matched, so that the movable chuck can move forwards with smaller force, thereby easily and stably breaking the steel wire and realizing pointing).
The speed reducing motor is a forward and reverse rotating motor, a forward and reverse conversion switch (which is convenient for controlling the movable chuck to move forward and break a steel wire or the movable chuck to reset backward) is arranged, and a forward gear of the forward and reverse conversion switch is connected with the timing heating switch in a linkage manner (when the heating switch is turned off, the forward gear of the forward and reverse conversion switch is started, and the speed reducing motor starts to rotate forward).
The invention relates to a pointing process beneficial to drawing and die-punching of a steel wire, which comprises the following steps:
A. paying off and straightening: the method comprises the following steps of (1) unfolding a wire rod with the diameter of 5.5-18 mm for paying off, horizontally and transversely penetrating the unfolded wire rod between an upper row of straightening rollers and a lower row of straightening rollers of a rotary straightener, and straightening the wire rod into a straight strip in a penetrating process (facilitating subsequent threading);
B. compacting the steel wire: the straightened steel wire sequentially passes through a wire feeding hole I in the fixed chuck, an inner cavity of the electromagnetic induction heating pipe with the length of 300-800 mm and a wire feeding hole II in the movable chuck, and the rotary straightener is closed at the moment; then, screwing a wire pressing bolt I in the fixed chuck and a wire pressing bolt II in the movable chuck downwards respectively to enable the lower ends of the wire pressing bolt I and the wire pressing bolt II to contact and press the upper surface of the steel wire (to realize the fixation of the front end and the rear end of the steel wire at the heated section and prepare for the subsequent breaking of the steel wire), and ensuring that the distance between the wire pressing bolt I and the wire pressing bolt II is 2-3 times of the length of the electromagnetic induction heating pipe;
C. heating the steel wire: starting and selecting a corresponding required frequency specification in the induction frequency gear regulator, controlling a timing heating switch to be started, generating an alternating magnetic field after an electromagnetic induction heating pipe is electrified, and quickly heating a steel wire positioned in the inner cavity of the electromagnetic induction heating pipe by using an electromagnetic induction effect; when the galvanic couple detects that the steel wire is heated to 890-1000 ℃, the galvanic couple feeds a temperature signal back to the induction frequency gear regulator, and controls the timing heating switch to be switched off to stop heating;
D. breaking the steel wire: the strength of the heated steel wire is reduced to 1/4-1/2 of the normal strength; starting a forward and reverse conversion switch of a speed reduction motor to a forward gear, driving a lead screw to rotate forward through a coupler, driving a movable chuck to translate forward at a speed of 2-10 mm/s through the matching of the lead screw and a lead screw threaded hole, enabling a steel wire of which the rear end is pressed and fixed by a fixed chuck and the front end is pressed and fixed by the movable chuck and slowly translates forward along with the movable chuck to be gradually and uniformly thinned to be disconnected, closing the forward and reverse conversion switch to enable the speed reduction motor to stop rotating, and forming a steel wire conical head beneficial to drawing and penetrating a die of the steel wire at a fracture of the steel wire;
E. die-threading and drawing: screwing off the wire pressing bolt I and the wire pressing bolt II upwards and reversely respectively, and loosening the fixation of the two ends of the steel wire fracture; then moving the steel wire at the connecting end of the wire rod out of the wire feeding hole I of the fixed chuck and the rotary straightener, and then matching with a wire drawing die to perform subsequent die feeding and drawing, namely, enabling a fracture of a conical head of the steel wire at the connecting end of the wire rod to penetrate through the wire drawing die and be embedded in a conical inner hole of a die core of an inner cavity of a die sleeve, and then starting drawing; and the steel wire at the other end of the fracture is taken as a waste product to be recycled; meanwhile, a forward and reverse conversion switch of the speed reducing motor is turned on to a reverse gear, the speed reducing motor reverses to drive the screw rod to rotate reversely, the movable chuck retreats and resets, and preparation is made for the next sharpening operation.
The design principle of the invention is as follows:
the steel wire is heated by utilizing the electromagnetic induction effect, namely alternating current generates an alternating magnetic field through the electromagnetic induction heating pipe, the steel wire with good magnetic permeability is arranged in the alternating magnetic field to cut alternating magnetic lines, so that the alternating current (namely eddy current) is generated in the steel wire, the eddy current enables atoms in the steel wire to randomly move at high speed, the atoms collide and rub with each other to generate heat energy, and the steel wire is rapidly heated (a heating power supply is disconnected when the steel wire is generally heated to 890-1000 ℃), and the steel wire has the advantages of high heating speed, cleanness and no pollution. And the steel wire is by intensity greatly reduced after the heating, when the steel wire end moves forward along the slide rail low-speed along the removal chuck that the lead screw driven, the steel wire after only needing when moving the chuck forward less clamping-force just can evenly attenuate and break the heating, and then form the steel wire conical head that does benefit to the steel wire drawing die-piercing fast, avoided the artifical sharper of utilizing the pointing machine of traditional to carry out mechanical pointing and the emergence of accidents such as injury people, finger, extrusion that often appear, the operation is simple, time and labor saving, high working efficiency, operate steadily, advantage safe in utilization.
The invention has the following beneficial technical effects:
the steel wire drawing die-penetrating device heats the steel wire by utilizing the electromagnetic induction effect, the strength of the heated steel wire is greatly reduced, the heated steel wire can be uniformly thinned and broken by virtue of small force, and then the steel wire conical head beneficial to drawing and penetrating the steel wire is quickly, safely and stably formed, and the device has the advantages of high heating speed, high working efficiency, stability in operation, safety in use, cleanness, no pollution, simplicity in operation, time saving and labor saving.
Drawings
FIG. 1 is a schematic view of the inventive pointing process.
FIG. 2 is a schematic view of the structure of the pointing device of the present invention.
FIG. 3 is a schematic diagram of a subsequent die-piercing step of a steel wire conical head obtained after the steel wire is broken.
Part numbers in the drawings: 1. the steel wire straightening machine comprises a steel wire, 2 parts of a rotary straightener, 2-1 parts of a straightening roller, 3 parts of a fixed chuck, 3-1 parts of a wire pressing bolt I, 3-2 parts of a wire penetrating hole I, 3-3 parts of a pressing threaded hole I, 4 parts of an electromagnetic induction heating pipe, 4-1 parts of a timing heating switch, 4-2 parts of an induction frequency gear regulator, 4-3 parts of a thermocouple, 5 parts of a movable chuck, 5-1 parts of a wire pressing bolt II, 5-2 parts of a wire penetrating hole II, 5-3 parts of a speed reducing motor, 5-3-1 parts of a forward and reverse conversion switch, 5-4 parts of a coupler, 5-5 parts of a screw rod, 5-6 parts of a screw rod threaded hole, 5-7 parts of a sliding wheel, 5-8 parts of a pressing threaded hole II, 6 parts of a wire drawing die, 6-1 parts of a die sleeve, 6-2 parts of a die core.
Detailed Description
The invention is further described below with reference to the figures and examples:
the invention discloses a pointing device beneficial to drawing and die-threading of a steel wire, which comprises a rotary straightener 2, a fixed chuck 3, an electromagnetic induction heating pipe 4 and a movable chuck 5 which are sequentially arranged along the direction of the steel wire (1), wherein two rows of straightening rollers 2-1 are arranged in the rotary straightener 2 in parallel up and down (the steel wire 1 which horizontally and transversely penetrates through the rotary straightener 2 is straightened into a straight strip to facilitate subsequent threading), a threading hole I3-2 is horizontally formed in the thickness direction of the fixed chuck 3, a pressing threaded hole I3-3 communicated with the threading hole I is vertically and downwards processed from the top surface of the fixed chuck 3, a pressing bolt I3-1 is screwed in the threaded hole I (the steel wire 1 penetrates through the threading hole I3-2, and the rear end of the steel wire 1 can be fixed by downwards screwing the pressing bolt I3-1 to contact with the upper surface of the pressing steel wire 1), the electromagnetic induction 4, a timing heating switch 4-1 and a moving chuck 5, The induction frequency gear regulator 4-2 is connected with a power supply in series through a lead to form an induction circuit, and a thermocouple 4-3 is connected in parallel between the induction frequency gear regulator 4-2 and the electromagnetic induction heating pipe 4 (a timing heating switch 4-1 controls the on-off of the induction circuit, namely controls the on-off of heating the steel wire 1; the induction frequency gear regulator 4-2 is used for regulating the heating temperature; the thermocouple 4-3 is used for indicating the temperature of the steel wire 1 and feeding a temperature signal back to the induction frequency gear regulator 4-2 in time); a thread hole II 5-2 and a screw thread hole 5-6 (for screwing a screw 5-5) are horizontally formed along the thickness direction of the movable chuck 5, a pressing screw hole II 5-8 communicated with the thread hole II is vertically and downwards processed from the top surface of the movable chuck 5, a screw pressing bolt II 5-1 (a steel wire 1 penetrates through the thread hole II 5-2, when the pressing bolt II 5-1 is screwed downwards to contact with the upper surface of the pressing steel wire 1, the front end of the steel wire 1 can be fixed) is screwed in the screw thread hole II, a screw 5-5 is screwed in the screw thread hole 5-6, the other end of the screw 5-5 is connected with a speed reducing motor 5-3 through a coupler 5-4 (the speed reducing motor 5-3 provides rotary power for the screw 5-5, and further drives the movable chuck 5 to move forwards and backwards, the steel wire breaking machine is used for breaking a steel wire, four sliding wheels 5-7 which can move back and forth along a sliding rail are arranged at the bottom of a movable chuck 5 (under the driving of a speed reducing motor 5-3 and a lead screw 5-5, the forward movement of the movable chuck 5 can be realized by small force by matching with the guiding action of the sliding wheels 5-7, so that the steel wire 1 is easily and stably broken, and the rolling tip is realized).
The speed reducing motor 5-3 is a forward and reverse rotating motor and is provided with a forward and reverse change-over switch 5-3-1 (which is convenient for controlling the movable chuck 5 to move forward to break the steel wire 1 or controlling the movable chuck 5 to reset backward), and a forward gear of the forward and reverse change-over switch 5-3-1 is connected with the timing heating switch 4-1 in a linkage manner (when the heating switch 4-1 is closed, the forward gear of the forward and reverse change-over switch 5-3-1 is started, and the speed reducing motor 5-3 starts to rotate forward).
Example one
In one embodiment, a pointing process beneficial to drawing and die-punching of a steel wire comprises the following steps:
A. paying off and straightening: a wire rod with the diameter of 15.5mm is unfolded for paying off, the unfolded steel wire 1 horizontally and transversely penetrates through the space between the upper row of straightening rollers 2-1 and the lower row of straightening rollers 2 of the rotary straightener 2, and the steel wire 1 is corrected into a straight strip in the penetration process (convenient for subsequent threading);
B. compacting the steel wire: the straightened steel wire 1 sequentially passes through a wire feeding hole I3-2 in the fixed chuck 3, an inner cavity of the electromagnetic induction heating pipe 4 with the length of 800mm and a wire feeding hole II 5-2 in the movable chuck 5, and the rotary straightener 2 is closed at the moment; then, a wire pressing bolt I3-1 in the fixed chuck 3 and a wire pressing bolt II 5-1 in the movable chuck 5 are respectively screwed downwards, so that the lower ends of the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 are both contacted with each other and the upper surface of the steel wire 1 is pressed tightly (the front end and the rear end of the steel wire 1 at the heated section are fixed, and preparation is made for subsequent steel wire breaking), and the distance between the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 is ensured to be 2-3 times of the length of the electromagnetic induction heating pipe 4;
C. heating the steel wire: starting and selecting a corresponding required frequency specification in the induction frequency gear regulator 4-2, controlling the timing heating switch 4-1 to be started, generating an alternating magnetic field after the electromagnetic induction heating pipe 4 is electrified, and quickly heating the steel wire 1 in the inner cavity of the electromagnetic induction heating pipe 4 by utilizing an electromagnetic induction effect; when the thermocouple 4-3 detects that the steel wire 1 is heated to 980 ℃, the thermocouple 4-3 feeds back a temperature signal to the induction frequency gear regulator 4-2, controls the timing heating switch 4-1 to be switched off, and stops heating;
D. breaking the steel wire: 1/4, the strength of the steel wire after heating is reduced to the normal strength; turning on a forward and reverse change-over switch 5-3-1 of a speed reducing motor 5-3 to a forward gear, driving a screw rod 5-5 to rotate forward through a coupler 5-4, driving a movable chuck 5 to translate forward at a speed of 3mm/s through the matching of the screw rod 5-5 and a screw thread hole 5-6 of the screw rod, pressing and fixing the rear end of the movable chuck 3 by a fixed chuck 3, pressing and fixing the front end of the movable chuck 5 by the movable chuck 5, gradually and uniformly thinning the steel wire 1 which slowly translates forward along with the movable chuck 5 to be disconnected, turning off the forward and reverse change-over switch 5-3-1 to stop the rotation of the speed reducing motor 5-3, and forming a steel wire conical head which is beneficial to drawing and threading the steel wire at the fracture of the steel wire 1;
E. die-threading and drawing: screwing off the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 upwards and reversely respectively, and loosening the fixation of the two ends of the fracture of the steel wire 1; then the steel wire 1 at the connecting end of the wire rod is moved out from the wire feeding hole I3-2 of the fixed chuck 3 and the rotary straightener 2 and then matched with the wire drawing die 6 for subsequent die feeding and drawing, namely, the fracture of the conical head of the steel wire 1 at the connecting end of the wire rod penetrates through the wire drawing die 6 and is embedded in the conical inner hole of the die core 6-2 of the inner cavity of the die sleeve 6-1, and then drawing is started; and the steel wire 1 at the other end of the fracture is taken as a waste product to be recycled; meanwhile, a forward and reverse change-over switch 5-3-1 of a speed reducing motor 5-3 is started to a reverse gear, the speed reducing motor 5-3 reverses to drive a screw 5-5 to rotate reversely, and a movable chuck 5 retreats and resets to prepare for the next sharpening operation.
Example two
In the second embodiment, the pointing process beneficial to drawing and die-punching of the steel wire comprises the following steps:
A. paying off and straightening: a wire rod with the diameter of 5.5mm is unfolded for paying off, the unfolded steel wire 1 horizontally and transversely penetrates through the space between the upper row of straightening rollers 2-1 and the lower row of straightening rollers 2 of the rotary straightener 2, and the steel wire 1 is corrected into a straight strip in the penetration process (convenient for subsequent threading);
B. compacting the steel wire: the straightened steel wire 1 sequentially passes through a wire feeding hole I3-2 in the fixed chuck 3, an inner cavity of the electromagnetic induction heating pipe 4 with the length of 300mm and a wire feeding hole II 5-2 in the movable chuck 5, and the rotary straightener 2 is closed at the moment; then, a wire pressing bolt I3-1 in the fixed chuck 3 and a wire pressing bolt II 5-1 in the movable chuck 5 are respectively screwed downwards, so that the lower ends of the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 are both contacted with each other and the upper surface of the steel wire 1 is pressed tightly (the front end and the rear end of the steel wire 1 at the heated section are fixed, and preparation is made for subsequent steel wire breaking), and the distance between the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 is ensured to be 2-3 times of the length of the electromagnetic induction heating pipe 4;
C. heating the steel wire: starting and selecting a corresponding required frequency specification in the induction frequency gear regulator 4-2, controlling the timing heating switch 4-1 to be started, generating an alternating magnetic field after the electromagnetic induction heating pipe 4 is electrified, and quickly heating the steel wire 1 in the inner cavity of the electromagnetic induction heating pipe 4 by utilizing an electromagnetic induction effect; when the thermocouple 4-3 detects that the steel wire 1 is heated to 890 ℃, the thermocouple 4-3 feeds back a temperature signal to the induction frequency gear regulator 4-2, controls the timing heating switch 4-1 to be switched off, and stops heating;
D. breaking the steel wire: 1/2, the strength of the steel wire after heating is reduced to the normal strength; turning on a forward and reverse change-over switch 5-3-1 of a speed reducing motor 5-3 to a forward gear, driving a screw rod 5-5 to rotate forward through a coupler 5-4, driving a movable chuck 5 to translate forward at a speed of 8mm/s through the matching of the screw rod 5-5 and a screw thread hole 5-6 of the screw rod, pressing and fixing the rear end of the movable chuck 3 by a fixed chuck 3, pressing and fixing the front end of the movable chuck 5 by the movable chuck 5, gradually and uniformly thinning the steel wire 1 which slowly translates forward along with the movable chuck 5 to be disconnected, turning off the forward and reverse change-over switch 5-3-1 to stop the rotation of the speed reducing motor 5-3, and forming a steel wire conical head which is beneficial to drawing and threading the steel wire at the fracture of the steel wire 1;
E. die-threading and drawing: screwing off the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 upwards and reversely respectively, and loosening the fixation of the two ends of the fracture of the steel wire 1; then the steel wire 1 at the connecting end of the wire rod is moved out from the wire feeding hole I3-2 of the fixed chuck 3 and the rotary straightener 2 and then matched with the wire drawing die 6 for subsequent die feeding and drawing, namely, the fracture of the conical head of the steel wire 1 at the connecting end of the wire rod penetrates through the wire drawing die 6 and is embedded in the conical inner hole of the die core 6-2 of the inner cavity of the die sleeve 6-1, and then drawing is started; and the steel wire 1 at the other end of the fracture is taken as a waste product to be recycled; meanwhile, a forward and reverse change-over switch 5-3-1 of a speed reducing motor 5-3 is started to a reverse gear, the speed reducing motor 5-3 reverses to drive a screw 5-5 to rotate reversely, and a movable chuck 5 retreats and resets to prepare for the next sharpening operation.
EXAMPLE III
In the third embodiment, the pointing process beneficial to drawing and die-punching of the steel wire comprises the following steps:
A. paying off and straightening: a wire rod with the diameter of 10.5mm is unfolded for paying off, the unfolded steel wire 1 horizontally and transversely penetrates through the space between the upper row of straightening rollers 2-1 and the lower row of straightening rollers 2 of the rotary straightener 2, and the steel wire 1 is corrected into a straight strip in the penetration process (convenient for subsequent threading);
B. compacting the steel wire: the straightened steel wire 1 sequentially passes through a wire feeding hole I3-2 in the fixed chuck 3, an inner cavity of the electromagnetic induction heating pipe 4 with the length of 600mm and a wire feeding hole II 5-2 in the movable chuck 5, and the rotary straightener 2 is closed at the moment; then, a wire pressing bolt I3-1 in the fixed chuck 3 and a wire pressing bolt II 5-1 in the movable chuck 5 are respectively screwed downwards, so that the lower ends of the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 are both contacted with each other and the upper surface of the steel wire 1 is pressed tightly (the front end and the rear end of the steel wire 1 at the heated section are fixed, and preparation is made for subsequent steel wire breaking), and the distance between the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 is ensured to be 2-3 times of the length of the electromagnetic induction heating pipe 4;
C. heating the steel wire: starting and selecting a corresponding required frequency specification in the induction frequency gear regulator 4-2, controlling the timing heating switch 4-1 to be started, generating an alternating magnetic field after the electromagnetic induction heating pipe 4 is electrified, and quickly heating the steel wire 1 in the inner cavity of the electromagnetic induction heating pipe 4 by utilizing an electromagnetic induction effect; when the thermocouple 4-3 detects that the steel wire 1 is heated to 920 ℃, the thermocouple 4-3 feeds back a temperature signal to the induction frequency gear regulator 4-2, controls the timing heating switch 4-1 to be switched off, and stops heating;
D. breaking the steel wire: 2/5, the strength of the steel wire after heating is reduced to the normal strength; turning on a forward and reverse change-over switch 5-3-1 of a speed reducing motor 5-3 to a forward gear, driving a screw rod 5-5 to rotate forward through a coupler 5-4, driving a movable chuck 5 to translate forward at a speed of 5mm/s through the matching of the screw rod 5-5 and a screw thread hole 5-6 of the screw rod, pressing and fixing the rear end of the movable chuck 3 by a fixed chuck 3, pressing and fixing the front end of the movable chuck 5 by the movable chuck 5, gradually and uniformly thinning the steel wire 1 which slowly translates forward along with the movable chuck 5 to be disconnected, turning off the forward and reverse change-over switch 5-3-1 to stop the rotation of the speed reducing motor 5-3, and forming a steel wire conical head which is beneficial to drawing and threading the steel wire at the fracture of the steel wire 1;
E. die-threading and drawing: screwing off the wire pressing bolt I3-1 and the wire pressing bolt II 5-1 upwards and reversely respectively, and loosening the fixation of the two ends of the fracture of the steel wire 1; then the steel wire 1 at the connecting end of the wire rod is moved out from the wire feeding hole I3-2 of the fixed chuck 3 and the rotary straightener 2 and then matched with the wire drawing die 6 for subsequent die feeding and drawing, namely, the fracture of the conical head of the steel wire 1 at the connecting end of the wire rod penetrates through the wire drawing die 6 and is embedded in the conical inner hole of the die core 6-2 of the inner cavity of the die sleeve 6-1, and then drawing is started; and the steel wire 1 at the other end of the fracture is taken as a waste product to be recycled; meanwhile, a forward and reverse change-over switch 5-3-1 of a speed reducing motor 5-3 is started to a reverse gear, the speed reducing motor 5-3 reverses to drive a screw 5-5 to rotate reversely, and a movable chuck 5 retreats and resets to prepare for the next sharpening operation.
Claims (3)
1. The utility model provides a do benefit to steel wire and draw pointing device of drawing die, its characterized in that: the tip rolling device comprises a rotary straightener (2), a fixed chuck (3), an electromagnetic induction heating pipe (4) and a movable chuck (5) which are sequentially arranged along the direction of a steel wire (1); two rows of straightening rollers (2-1) are arranged in parallel up and down in the rotary straightener (2); a threading hole I (3-2) is horizontally formed in the thickness direction of the fixed chuck (3), a pressing threaded hole I (3-3) communicated with the threading hole I is vertically and downwards processed from the top surface of the fixed chuck (3), and a thread pressing bolt I (3-1) is screwed in the threaded hole I; the electromagnetic induction heating pipe (4), the timing heating switch (4-1) and the induction frequency gear regulator (4-2) are connected in series with a power supply through leads to form an induction circuit, and a thermocouple (4-3) is connected in parallel between the induction frequency gear regulator (4-2) and the electromagnetic induction heating pipe (4); the novel screw driver is characterized in that a threading hole II (5-2) and a screw rod threaded hole (5-6) are horizontally formed in the thickness direction of the movable chuck (5), a pressing threaded hole II (5-8) communicated with the threading hole II is vertically and downwards processed from the top surface of the movable chuck (5), a screw pressing bolt II (5-1) is screwed in the threaded hole II, a screw rod (5-5) is screwed in the screw rod threaded hole (5-6), the other end of the screw rod (5-5) is connected with a speed reducing motor (5-3) through a coupler (5-4), and four sliding wheels (5-7) capable of moving back and forth along a sliding rail are mounted at the bottom of the movable chuck (5).
2. The pointing device for the steel wire drawing and drawing through die of claim 1, wherein: the speed reducing motor (5-3) is a forward and reverse rotating motor, a forward and reverse conversion switch (5-3-1) is arranged, and a forward gear of the forward and reverse conversion switch (5-3-1) is connected with the timing heating switch (4-1) in a linkage mode.
3. A pointing process using the pointing device for a steel wire drawing die according to claim 1, characterized in that: the pointing process comprises the following steps:
A. paying off and straightening: a wire rod with the diameter of 5.5-18 mm of the steel wire is unfolded for paying off, the unfolded steel wire (1) horizontally and transversely penetrates through the space between the upper row of straightening rollers (2-1) and the lower row of straightening rollers (2) of the rotary straightener (2), and the steel wire (1) is corrected into a straight strip in the penetration process;
B. compacting the steel wire: the straightened steel wire (1) sequentially passes through a wire feeding hole I (3-2) in the fixed chuck (3), an inner cavity of the electromagnetic induction heating pipe (4) with the length of 300-800 mm and a wire feeding hole II (5-2) in the movable chuck (5), and the rotary straightener (2) is closed at the moment; then screwing a wire pressing bolt I (3-1) in the fixed chuck (3) and a wire pressing bolt II (5-1) in the movable chuck (5) downwards respectively to enable the lower ends of the wire pressing bolt I (3-1) and the wire pressing bolt II (5-1) to be in contact with each other and to tightly press the upper surface of the steel wire (1), and ensuring that the distance between the wire pressing bolt I (3-1) and the wire pressing bolt II (5-1) is 2-3 times of the length of the electromagnetic induction heating pipe (4);
C. heating the steel wire: starting and selecting a corresponding required frequency specification in the induction frequency gear regulator (4-2), controlling a timing heating switch (4-1) to start, generating an alternating magnetic field after the electromagnetic induction heating pipe (4) is electrified, and rapidly heating the steel wire (1) positioned in the inner cavity of the electromagnetic induction heating pipe (4) by utilizing an electromagnetic induction effect; when the galvanic couple (4-3) detects that the steel wire (1) is heated to 890-1000 ℃, the galvanic couple (4-3) feeds a temperature signal back to the induction frequency gear regulator (4-2) to control the timing heating switch (4-1) to be switched off and stop heating;
D. breaking the steel wire: the strength of the heated steel wire is reduced to 1/4-1/2 of the normal strength; turning on a forward and reverse conversion switch (5-3-1) of a speed reducing motor (5-3) to a forward gear, driving a lead screw (5-5) to rotate forward through a coupler (5-4), driving a movable chuck (5) to translate forward at the speed of 2-10 mm/s through the matching of the lead screw (5-5) and a lead screw threaded hole (5-6), enabling a steel wire (1) with the rear end to be pressed and fixed by a fixed chuck (3) and the front end to be pressed and fixed by the movable chuck (5) and slowly translating forward along with the movable chuck (5) to be gradually and uniformly thinned to be disconnected, turning off the forward and reverse conversion switch (5-3-1) to stop the speed reducing motor (5-3) from rotating, and forming a steel wire conical head beneficial to a steel wire drawing die at the fracture of the steel wire (1);
E. die-threading and drawing: screwing off a wire pressing bolt I (3-1) and a wire pressing bolt II (5-1) upwards and reversely respectively, and loosening the fixation of two ends of the fracture of the steel wire (1); then the steel wire (1) at the connecting end of the wire rod is moved out of the wire feeding hole I (3-2) of the fixed chuck (3) and the rotary straightener (2) and then matched with the wire drawing die (6) for subsequent die feeding and drawing, namely, the fracture of the conical head of the steel wire (1) at the connecting end of the wire rod penetrates through the wire drawing die (6) and is embedded in the conical inner hole of the die core (6-2) in the inner cavity of the die sleeve (6-1), and then drawing is started; and the steel wire (1) at the other end of the fracture is taken as a waste product to be recycled; meanwhile, a forward and reverse conversion switch (5-3-1) of the speed reducing motor (5-3) is started to a reverse gear, the speed reducing motor (5-3) reverses to drive the screw rod (5-5) to rotate reversely, the movable chuck (5) retreats to reset, and preparation is made for the next sharpening operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568665.2A CN113198863A (en) | 2021-05-25 | 2021-05-25 | Pointing process and pointing device beneficial to drawing and die penetrating of steel wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110568665.2A CN113198863A (en) | 2021-05-25 | 2021-05-25 | Pointing process and pointing device beneficial to drawing and die penetrating of steel wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113198863A true CN113198863A (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110568665.2A Pending CN113198863A (en) | 2021-05-25 | 2021-05-25 | Pointing process and pointing device beneficial to drawing and die penetrating of steel wire |
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| CN (1) | CN113198863A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115121642A (en) * | 2022-09-02 | 2022-09-30 | 西安赛特思迈钛业有限公司 | Cold drawing, sharpening and die-punching method for nickel-titanium shape memory alloy superfine wire |
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| JP2003320412A (en) * | 2002-05-02 | 2003-11-11 | Hamana Tekko Kk | Device and method for forming wire rod terminal |
| US20060027009A1 (en) * | 2004-08-05 | 2006-02-09 | Becton, Dickinson And Company | Method of producing tapered or pointed cannula |
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| CN112058934A (en) * | 2020-09-11 | 2020-12-11 | 上海交通大学 | A kind of preparation technology of through-die tip in shape memory alloy wire drawing process |
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| JPS5156759A (en) * | 1974-11-15 | 1976-05-18 | Hitachi Metals Ltd | Onkanhikinukihoho oyobi sochi |
| US4014199A (en) * | 1976-01-26 | 1977-03-29 | Gte Sylvania Incorporated | Apparatus and method for providing an electrical contact with a tip portion substantially free of burrs |
| JPH04104207U (en) * | 1991-02-19 | 1992-09-08 | 新日本製鐵株式会社 | Wire drawing tip attachment device |
| JP2003320412A (en) * | 2002-05-02 | 2003-11-11 | Hamana Tekko Kk | Device and method for forming wire rod terminal |
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| CN112058934A (en) * | 2020-09-11 | 2020-12-11 | 上海交通大学 | A kind of preparation technology of through-die tip in shape memory alloy wire drawing process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115121642A (en) * | 2022-09-02 | 2022-09-30 | 西安赛特思迈钛业有限公司 | Cold drawing, sharpening and die-punching method for nickel-titanium shape memory alloy superfine wire |
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Application publication date: 20210803 |