CN110743993B

CN110743993B - Automatic production device for skew rolling parts by using metal wire as raw material

Info

Publication number: CN110743993B
Application number: CN201911024690.3A
Authority: CN
Inventors: 王宝雨; 刘胜强; 林龙飞; 王帅; 刘晋平
Original assignee: University of Science and Technology Beijing USTB
Current assignee: University of Science and Technology Beijing USTB
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2021-06-01
Anticipated expiration: 2039-10-25
Also published as: CN110743993A

Abstract

The invention relates to the technical field of metal plastic forming process and equipment, and provides an automatic production device for a skew-rolled part by taking a metal wire as a raw material, which comprises a wire blank unit, a straightening mechanism, a shearing mechanism, a material guide mechanism and a skew rolling mill; the metal wire coil stock is arranged below the straightening mechanism, the wire enters the straightening mechanism from the guide wheel under the traction of the traction wheel, and enters the material guide mechanism after the straightening is finished in the straightening mechanism; when the length of the wire rod in the material guide mechanism reaches the required length, the traction motor stops moving, the shearing mechanism cuts the wire rod, the shearing mechanism resets, the traction motor redraws the wire rod, the cut wire rod enters the diagonal mill under the thrust of the rear wire rod, and the wire rod completes axial feeding and rotary forming under the action of the roller. The automatic feeding device is simple in structure, other auxiliary equipment is not needed, automatic feeding can be achieved only through the straightening mechanism, the shearing mechanism and the material guiding mechanism, the whole process is automatic, and labor cost is greatly saved; the integration degree is high, and the floor area is greatly reduced.

Description

Automatic production device for skew rolling parts by using metal wire as raw material

Technical Field

The invention relates to the technical field of metal plastic forming processes and equipment, in particular to an automatic production device for a skew rolling part by taking a metal wire as a raw material.

Background

The cross rolling technology using metal wire as raw material has wide application in various fields, such as cross rolling of ball parts, cross rolling of cross rolling pipe-penetrating and other complex parts, etc., and has the characteristics of high production efficiency, small working load, excellent product performance, cleanness, no pollution and high material utilization rate, so the development of corresponding technology has important significance. At present, most of skew rolling technologies using metal wires as raw materials are difficult to realize direct automatic feeding after the metal wires are straightened, and a feeding frame and corresponding automatic equipment are usually required to be arranged between a straightening machine and a skew rolling machine to realize the full-process automation of a production line, so that the whole equipment is large and complex, the cost is increased, and the occupied area of the whole production line is large.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides the automatic production device for the skew rolling part by taking the metal wire as the raw material, which has the advantages of full-automatic production, great labor cost saving, simple integral structure and high integration degree.

The invention adopts the following technical scheme:

an automatic production device for skew-rolled parts by taking metal wires as raw materials comprises a wire blank unit, a straightening mechanism, a shearing mechanism, a material guide mechanism and a skew rolling mill;

the wire stock unit is used for storing metal wire stock;

the straightening mechanism is used for drawing and straightening the metal wire blank;

the shearing mechanism is used for shearing metal wire blanks, and the lengths of the sheared metal wire blanks are the same;

the material guide mechanism is used for guiding the sheared metal wire rod blank into a skew rolling mill so as to prevent the metal wire rod blank from being bent under the condition of larger major diameter;

the oblique rolling mill is used for rolling the metal wire stock into a target piece;

the metal wire stock sequentially passes through the straightening mechanism, the shearing mechanism, the material guiding mechanism and the inclined rolling mill from the wire stock unit to be manufactured into a target piece, and automatic production is realized.

Furthermore, the production device also comprises a rolling mill mounting base used for mounting the skew rolling mill and a corresponding matched water tank and discharge tank.

Further, the wire stock unit comprises a metal wire stock coil, a round nut and a discharge tray for placing the metal wire stock coil; the blowing dish passes through the bolt and installs in ground, and round nut is used for the axial fixity of wire material book.

Further, the wire stock unit is disposed below the straightening mechanism.

Further, the straightening mechanism comprises a straightening mechanism bottom plate, a straightening mechanism mounting frame, a longitudinal straightening mechanism, a transverse straightening mechanism, a guide wheel, a traction servo motor and a speed reducer;

the longitudinal straightening mechanism, the transverse straightening mechanism, the guide wheel and the traction wheel are all arranged above the straightening bottom plate; the traction servo motor and the speed reducer are both arranged below the straightening bottom plate; the traction wheel is driven by the traction servo motor to pull the wire blank to move; the longitudinal straightening mechanism is used for longitudinally straightening the wire blank, and the transverse straightening mechanism is used for transversely straightening the wire blank.

Further, the shearing mechanism comprises a hydraulic cylinder, a cylindrical cutter head and a cutter head guide groove;

the hydraulic cylinder is connected with the bottom plate of the straightening mechanism through a bolt, the cylindrical cutter head is arranged above the hydraulic cylinder, and the cutter head guide groove is connected with the lower part of the bottom plate of the straightening mechanism through a bolt;

the diameter of the cylindrical cutter head is equal to the inner diameter of the cutter head guide groove, the cylindrical cutter head is pushed by the hydraulic cylinder to do reciprocating linear motion in the cutter head guide groove, and the metal wire is cut through the relative motion of the cylindrical cutter head and the cutter head guide groove;

when the wire is cut off, the columnar cutter head resets to the initial position, the wire simultaneously restores to the initial position, the cut wire and the uncut wire are coaxial at the moment, the traction servo motor starts to work again to drive the traction wheel to drive the rear blank to move, and the cut wire continues to move forwards under the thrust of the rear wire; after the cut wire rod enters the oblique rolling mill, the roller drives the wire rod to complete axial feeding and rotary forming.

Further, the drawing speed of the drawing wheel along the axial direction of the wire rod is less than the axial speed provided by the roller.

Further, the material guiding mechanism comprises a long material guiding barrel and a short material guiding barrel; one side of the long guide cylinder is semi-cylindrical to prevent the wire from bending when moving longitudinally along with the cutter, and the other side of the long guide cylinder is cylindrical to guide the blank into a rolling mill and provide a guiding and supporting function for the blank; the short guide cylinder is used for installing and supporting the long guide cylinder.

Further, the skew rolling mill comprises a left roller system, a right roller system and a discharging rail; the rolling machine is a two-roller system, the two roller systems contain the same components, and the rollers are arranged on the roller system and are respectively driven by a servo motor to rotate so as to finish the rolling forming of the metal wire rod.

Further, the rolling mill mounting unit comprises a rolling mill mounting base, a water tank, a discharging box and a guide rail; the rolling mill installation foundation is fixed on the ground through bolts, the guide rail is installed on the rolling mill installation foundation through bolts, and the water tank and the discharge box are placed above the guide rail.

The invention has the beneficial effects that: need not to increase auxiliary assembly, only through straightening mechanism, cut mechanism and guide unit alright realize the automatic feeding of wire rod blank, full automation production saves the cost of labor greatly, overall structure is simple, and the integration degree is high, reduces area greatly.

Drawings

Fig. 1 is a schematic structural diagram of an automatic production apparatus for skew-rolled parts using a metal wire as a raw material according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the wire blank unit in the embodiment.

FIG. 3 is a schematic view showing the structure of the straightening mechanism in the embodiment.

Fig. 4 is a schematic structural diagram of the shearing mechanism in the embodiment.

Fig. 5 is a schematic structural view of a material guiding unit in an embodiment.

FIG. 6 is a schematic structural view of the skew rolling mill in the embodiment.

Fig. 7 is a schematic structural diagram of a mounting base unit of the rolling mill in the embodiment.

In the figure: 1. a wire stock unit; 2. a straightening mechanism; 3. a shearing mechanism; 4. a material guiding mechanism; 5. a skew rolling mill; 6. installing a foundation of the rolling mill; 7. placing a tray; 8. coiling the wire; 9. a round nut; 10. a straightening mechanism mounting frame; 11. a bottom plate of the straightening mechanism; 12. a guide wheel; 13. a longitudinal straightening mechanism; 14. a transverse straightening mechanism; 15. a traction wheel; 16. a speed reducer; 17. a traction servo motor; 18. a hydraulic cylinder; 19. a cylindrical cutter head; 20. a cutter head guide groove; 21 short guide cylinder; 22. a long material guide cylinder; 23. a right roll system; 24. a left roll system; 25. a servo motor system; 26. a water tank; 27. installing a foundation of the rolling mill; 28. supporting a servo motor; 29. a discharging box; 30. a guide rail.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that technical features or combinations of technical features described in the following embodiments should not be considered as being isolated, and they may be combined with each other to achieve better technical effects. In the drawings of the embodiments described below, the same reference numerals appearing in the respective drawings denote the same features or components, and may be applied to different embodiments.

As shown in fig. 1, an automatic production apparatus for skew-rolled parts using a metal wire as a raw material according to an embodiment of the present invention includes a wire blank unit 1, a straightening mechanism 2, a shearing mechanism 3, a material guiding mechanism 4, a skew rolling mill 5, and a mill mounting unit.

The wire stock unit 1 is used for storing metal wire stock. Preferably, as shown in fig. 2, the wire blank unit 1 comprises a discharge tray 7, a metal wire coil 8 and a round nut 9. The cylindrical shaft end of the material placing disc 7 is conical, coils can be conveniently placed into the material placing disc, the round nut 9 axially fixes the wire coils through threads, and the whole wire blank unit 1 is fixed on the ground through bolts.

And the straightening mechanism 2 is used for drawing and straightening the metal wire blank. Preferably, as shown in fig. 3, the straightening mechanism 2 comprises a straightening mechanism mounting frame 10, a straightening mechanism bottom plate 11, a guide wheel 12, a longitudinal straightening mechanism 13, a transverse straightening mechanism 14, a traction wheel 15, a speed reducer 16 and a traction servo motor 17. The straightening mechanism mounting frame 10 is fixed on the ground through bolts, the straightening mechanism mounting base plate 11 is mounted on the straightening mechanism mounting frame 10 through bolts, the transverse straightening mechanism 14 and the longitudinal straightening mechanism 13 are connected with the straightening mechanism base plate 11 through bolts, a speed reducer 16 and a traction servo motor 17 are connected below the traction wheel 15, the speed reducer 16 is connected with the traction servo motor 17 through bolts, and the speed reducer 16 is mounted below the straightening mechanism base plate 11 through bolts.

The shearing mechanism 3 is used for shearing metal wire blanks, and the lengths of the sheared metal wire blanks are the same. Preferably, as shown in fig. 4, the shearing mechanism 4 comprises a hydraulic cylinder 18, a cylindrical cutter head 19 and a cutter head guide groove 20. The hydraulic cylinder 18 is mounted below the straightening mechanism base plate 11 by a bolt, and the cutter head guide groove 20 is mounted below the straightening mechanism base plate 11 by a bolt. The cylindrical cutter head 19 is fixedly connected with the hydraulic cylinder 18, so that the hydraulic cylinder 18 can drive the cylindrical cutter head 19 to do linear reciprocating motion in the cutter head guide groove 20 along the axis direction.

The material guide mechanism 4 is used for guiding the sheared metal wire rod blank into the skew rolling mill 5, and preventing the metal wire rod blank from being bent under the condition that the length-diameter ratio (the ratio of the length to the diameter) is larger. Preferably, as shown in fig. 5, the material guiding mechanism 4 includes a long material guiding cylinder 22 and a short material guiding cylinder 21, one side of the long material guiding cylinder 22 is connected with the bottom plate 11 of the straightening mechanism through a bolt, the other side is embedded into an inner hole of the short material guiding cylinder 21, and the short material guiding cylinder 21 is installed on the skew rolling mill base through a bolt.

And the skew rolling mill 5 is used for rolling the metal wire rod blank into a target piece. Preferably, as shown in fig. 6, the skew rolling mill 5 includes left and right stands, a left roll system 24, a right roll system 23, and a servo motor system 25. The two frame rotating shafts are symmetrically arranged by the axis of the blank; the left and right synchronous gears are meshed to synchronously center and press down the two frames; the two rollers are coaxially fixed by the two roller systems respectively; the inclination angle adjusting bolt adjusts the inclination angles of the two rollers; the radial pressing unit adjusts the opening of the two frames to change and adjust the roll distance of the two rolls; the blank is obliquely rolled and formed between the two rollers under the action of the friction force of the rollers/the blank. The skew rolling mill 5 has the advantages of synchronous centering and pressing, no deviation of a vertical central line, high frame strength, simplicity in installation and debugging and the like. The skew rolling mill 5 is mounted on the mill mounting base 27 by bolts.

The rolling mill mounting unit is used for mounting the skew rolling mill 5 and a corresponding matched water tank 26 and a discharge tank 29. Preferably, as shown in fig. 7, the rolling mill mounting unit comprises a rolling mill mounting base 27, a water tank 26, a motor support 28, a discharge box 29 and a guide rail 30. The rolling mill mounting base 27 is fixed on the ground through bolts, the motor support 28 and the guide rail 30 are both connected with the rolling mill mounting base 27 through bolts, and the water tank 26 and the discharge tank 29 are placed above the guide rail 30.

The working principle of the embodiment of the invention is as follows:

the metal wire is uncoiled from a wire coil 8 under the traction of a traction wheel 15, enters a straightening mechanism 2 under the action of a guide wheel 12, is straightened respectively in the longitudinal direction and the axial direction, then enters a material guide mechanism 4 and continues to move forwards, when the length of the wire reaches the required length, a traction servo motor 17 stops working, the wire stops axial feeding, at the moment, a hydraulic cylinder 18 starts working, a cylindrical cutter head 19 is driven to move in a cutter head guide groove 20, the shearing of the wire is completed through the relative movement of the cylindrical cutter head 19 and the cutter head guide groove 20, the cylindrical cutter head 19 resets after the shearing is completed, the traction servo motor 17 restarts to drive the uncut wire to continue to move, the cut wire continues to move in the material guide mechanism 4 under the thrust of the rear wire, and finally enters a skew rolling mill 5. The skew rolling mill 5 can be used in various ways, preferably as follows: the roller is driven by a servo motor system 25 to rotate, the

roller systems

24 and 25 adopt cantilever type structures, only a single side is provided with a bearing, and then the roller system is simplified, thereby achieving the purpose of quick roller change. The roll system inclination angle adjustment is realized through an inclination angle adjusting mechanism below the rolling mill, the action line of the inclination angle adjusting mechanism is longer, and the high-precision angle adjustment can be realized. The screw-down device and the gear synchronous mechanism can ensure that the two racks are synchronously centered and pressed down, and the position of a vertical rolling center line is fixed. The double-rotating-shaft type rack structure can shorten the distance between the lower rotating shaft and the rolling center line, thereby reducing the position fluctuation of the horizontal rolling center line caused by the adjustment of the rack distance. The guide auxiliary device can prevent the blanks from swinging and shaking greatly in the rolling process, and the blanks can be guaranteed to move forward stably. By adjusting the distance between the two roller systems, the rolling of wires with different diameters can be realized.

The automatic feeding and rolling device has the advantages that other auxiliary equipment is not required to be added, the automatic feeding and rolling of the wire blank can be realized only through the necessary straightening mechanism 2, the shearing mechanism 3 and the material guiding mechanism 4, the automation degree of the device is high, the whole structure is simple, the installation and the adjustment are convenient, the occupied area is small, the cost can be greatly reduced, and the automatic feeding and rolling device is suitable for rolling and forming by taking metal wires as raw materials.

While several embodiments of the present invention have been presented herein, it will be appreciated by those skilled in the art that changes may be made to the embodiments herein without departing from the spirit of the invention. The above examples are merely illustrative and should not be taken as limiting the scope of the invention.

Claims

1. The automatic production device for the skew-rolled parts by taking metal wires as raw materials is characterized by comprising a wire blank unit, a straightening mechanism, a shearing mechanism, a material guide mechanism and a skew rolling machine;

the wire stock unit is used for storing metal wire stock;

the straightening mechanism is used for drawing and straightening the metal wire blank; the straightening mechanism comprises a straightening mechanism bottom plate, a straightening mechanism mounting frame, a longitudinal straightening mechanism, a transverse straightening mechanism, a guide wheel, a traction servo motor and a speed reducer; the longitudinal straightening mechanism, the transverse straightening mechanism, the guide wheel and the traction wheel are all arranged above a bottom plate of the straightening mechanism; the traction servo motor and the speed reducer are both arranged below the bottom plate of the straightening mechanism; the traction wheel is driven by the traction servo motor to pull the wire blank to move; the longitudinal straightening mechanism is used for longitudinally straightening the wire blank, and the transverse straightening mechanism is used for transversely straightening the wire blank;

the material guide mechanism is used for guiding the sheared metal wire rod blank into a skew rolling mill so as to prevent the metal wire rod blank from being bent under the condition of larger major diameter; the material guide mechanism comprises a long material guide cylinder and a short material guide cylinder; one side of the long guide cylinder is semi-cylindrical to prevent the wire from bending when moving longitudinally along with the cutter, and the other side of the long guide cylinder is cylindrical to guide the blank into a rolling mill and provide a guiding and supporting function for the blank; the short material guide barrel is used for mounting and supporting the long material guide barrel;

2. The automatic production apparatus for a skew-rolled part using a metal wire as a raw material according to claim 1, further comprising a rolling mill mounting unit for mounting the skew rolling mill and a water tank and a discharge tank which are respectively provided.

3. The automatic production device for skew-rolled parts using a metal wire as a raw material according to claim 1, wherein said wire blank unit comprises a metal wire coil, a round nut, and a discharge tray for placing the metal wire coil; the blowing dish passes through the bolt and installs in ground, and round nut is used for the axial fixity of wire material book.

4. The apparatus for automatically producing a skew-rolled part using a metal wire as a raw material according to claim 3, wherein the wire stock unit is disposed below the straightening mechanism.

5. The automatic production apparatus for a skew-rolled part using a metal wire as a raw material according to claim 1, wherein said shearing mechanism comprises a hydraulic cylinder, a cylindrical cutter head, a cutter head guide groove;

6. The apparatus for automatically producing a skew-rolled part using a metal wire as a raw material according to claim 5, wherein a drawing speed of said drawing wheel in an axial direction of the wire is smaller than an axial speed provided by said rolling rolls.

7. The automatic production apparatus for a skew-rolled part using a metal wire as a raw material according to any one of claims 1 to 6, wherein the skew rolling mill comprises a left roll system, a right roll system, a discharge rail; the skew rolling mill is a two-roller system, the two roller systems contain the same components, and the rollers are arranged on the roller systems and are driven by servo motors to do rotary motion respectively, so that the rolling forming of the metal wire rod is completed.

8. The automatic production apparatus for a skew-rolled part using a metal wire as a raw material according to claim 2, wherein said rolling mill mounting unit comprises a rolling mill mounting base, a water tank, a discharge box, a guide rail; the rolling mill installation foundation is fixed on the ground through bolts, the guide rail is installed on the rolling mill installation foundation through bolts, and the water tank and the discharge box are placed above the guide rail.