A wire drawing machine with controllable tension for metal materials

Abstract

The present invention discloses a wire drawing machine with controllable tension for metal materials, which relates to the field of wire drawing equipment. During active regulation, the electric telescopic rod drives multiple sliding columns on the movable frame to slide through the pin plate, and the universal wheels move synchronously with the movement of the sliding columns, causing the coiling diameter of the wire on the surface of the universal wheels to change. When the axial spacing between the universal wheels on the surface of the coiled wire remains unchanged, but the lateral distance increases, the helix angle changes with the increase of the distance, and the change amplitude of the helix angle is small, realizing a small adjustment of the sliding resistance of the wire. By controlling the spacing between multiple wheel frame assemblies through the telescopic cylinder, the axial spacing between the universal wheels changes, and the axial spacing remains consistent under the action of the elastic element, completing a large-angle change of the uniform helix angle and a large adjustment of the sliding resistance of the wire, realizing the coordination of large and rapid adjustment and small and precise adjustment during the active regulation process, and realizing a high-precision and rapid-response tension regulation mechanism.

Description

Technical Field

[0001] The present invention relates to the field of wire drawing equipment, and particularly to a wire drawing machine with controllable tension for metal materials. Background Art

[0002] There are many types of wire drawing machines. For the wire drawing machine acting on metal materials, a relatively large pulling force needs to be applied to the wire rod so that the wire rod is pulled out from the pay-off reel, and after passing through a plurality of wire drawing sleeves with gradually decreasing apertures, wire drawing with a predetermined aperture is achieved and wound by the take-up reel. As one of the relatively mature equipment at present, the quality of wire drawing of the wire drawing machine is directly related to tension control. For example, Chinese Patent Publication No. CN114888104B proposes a wire drawing machine for processing metal materials with a tension adjusting mechanism, which shortens the moving distance of the metal wire disposed on its outer wall by means of expansion and contraction, so as to achieve the effect of automatically adjusting the tension. All such are mostly for adjusting the length change to control the tension;

[0003] Most of the current tension control methods are relatively single. For example, the elastic pressing of the wire rod by a spring and a pendulum wheel maintains the tension under the action of the elastic force. If the tension continuously increases or continuously decreases, it will exceed the maximum or minimum elastic force range and cause failure. At present, the tension is automatically controlled, and mostly adopts a linear control logic of detection - calculation - execution, and it is difficult to realize the coordinated control of non-linear automatic tension control and active control. Summary of the Invention

[0004] The purpose of the present invention is to provide a wire drawing machine with controllable tension for metal materials in order to solve the problems of single tension control and complex coordinated control of the current wire drawing machine.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solution: A wire drawing machine with controllable tension for metal materials includes a pay-off reel, a take-up reel, and a wire drawing device disposed therebetween, and further includes a tension regulator disposed at the feed end of the wire drawing device. The tension regulator includes a support assembly and a strong tensioning assembly and a micro tensioning assembly installed therein. The characteristics are as follows: The strong tensioning assembly includes a plurality of fixed frames and movable frames and a plurality of wheel frame assemblies slidably disposed thereon in common. A telescopic cylinder is installed at the end wheel frame assembly, and an elastic element is commonly provided between adjacent wheel frame assemblies. The wheel frame assembly includes a sliding seat, a sliding column slidably penetrating therein, and a universal wheel fixed at one end of the sliding column;

[0006] The micro tensioning assembly includes a sliding frame slidable in the support assembly, and pin seats are symmetrically disposed on both sides of the sliding frame. A pin plate for supporting the movable frame is installed on the pin seat, and an electric telescopic rod for controlling the displacement of the two pin seats is installed on one side of the sliding frame;

[0007] During active regulation, the electric telescopic rod drives multiple sliding columns on the movable frame to slide through the pin plate. The displacement of the universal wheels causes a small change in the helix angle of the wire, slightly adjusting the sliding resistance of the wire. At the same time, the telescopic cylinder controls the distance between multiple wheel frame assemblies, resulting in a large change in the helix angle and a significant adjustment of the sliding resistance of the wire. During automatic regulation, the telescopic cylinder shuts down, and the inertial force of the wire stretches the elastic element, causing the helix angle to be adjusted when the distance between the wheel frame assemblies changes. At the same time, the electric telescopic rod is controlled to intervene in the small-tension control.

[0008] As a further description of the above technical solution: The support assembly includes a core cylinder and side plates symmetrically fixed at both ends thereof. A plurality of protective plates are fixedly connected between the opposite surfaces of the two side plates. Both ends of the plurality of fixing frames are fixedly connected to the opposite surfaces of the two side plates, and the sliding frame penetrates and slides on the two side plates.

[0009] As a further description of the above technical solution: The telescopic cylinder is located inside the core cylinder, and one end thereof is installed through the corresponding side plate. The telescopic end of the telescopic cylinder is fixed with an end frame, and the end frame slides on the core cylinder and is limited to slide on the inner wall of the sliding column of the wheel frame assembly at the end. The sliding column is limited to slide on the movable frame, and the sliding seat is limited to slide on the fixed frame.

[0010] As a further description of the above technical solution: The elastic element includes a scissors frame that moves in a shearing shape. A tension spring is commonly installed at the two movable ends of the scissors frame, and both ends of the scissors frame are respectively movably connected to two adjacent sliding seats.

[0011] As a further description of the above technical solution: The strong tensioning assembly further includes a guide wheel, and the guide wheel is installed on the universal wheels at both ends.

[0012] As a further description of the above technical solution: The telescopic end of the electric telescopic rod is fixed to the corresponding side pin seat, and the other pin seat is fixed to the sliding frame. Both ends of the pin plate are respectively movably connected to the pin seat and the movable frame.

[0013] As a further description of the above technical solution: The wire is spirally wound and attached to a plurality of universal wheels, and both ends thereof slide on the guide wheels in an axial sliding state.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] In this solution, during active regulation, the electric telescopic rod drives multiple sliding columns on the movable frame to slide through the pin plate. The universal wheels move synchronously with the movement of the sliding columns, causing the coiling diameter of the wire on the surface of the universal wheels to change. When the axial distance between the universal wheels on the surface of the coiled wire remains unchanged, but the lateral distance increases, the helix angle changes with the increase in distance, and the change amplitude of the helix angle is small, realizing a small adjustment of the sliding resistance of the wire.

[0016] Control the spacing between multiple wheel carrier assemblies through a telescopic cylinder, so that the axial spacing of the casters changes, and the axial spacing remains consistent under the action of elastic elements, completing a large-angle change of a uniform helix angle, greatly adjusting the sliding resistance of the wire, and realizing the coordination of large-scale rapid adjustment and small-scale precise adjustment during the active regulation process, achieving a high-precision and rapid-response tension regulation mechanism;

[0017] During automatic regulation, the air pump connected to one end of the telescopic cylinder shuts down, and its air outlet valve is opened. At this time, the telescopic cylinder can freely expand and contract. When the inertial force of the wire sliding in the axial position forms an axial tensile force and acts on the elastic element to elongate, the spacing between the wheel carrier assemblies changes. The greater the movement amplitude of the wheel carrier assembly with the increase of the tensile force, and the more adaptable the tension changes to the wire movement speed. That is, the greater the tensile force, the smaller the tension, and vice versa. At the same time, it can control the electric telescopic rod to intervene in small-scale regulation, enabling it to realize the dynamic balance of tension through the adaptive change of the helix angle;

[0018] This method has non-linear damping characteristics and can adapt to the dynamic requirements in material processing, such as the strain hardening effect in the wire drawing process, without external intervention. Compared with the traditional elastic tension maintenance, it can continuously change and has no tension limit of the maximum elastic force, and has a wide range of applications. Brief Description of the Drawings

[0019] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 It is a sectional schematic diagram of the three-dimensional of the present invention;

[0021] Figure 3 It is a sectional schematic diagram of the top view of the present invention;

[0022] Figure 4 It is a sectional schematic diagram of the right view of the present invention;

[0023] Figure 5 It is a three-dimensional schematic diagram of the micro-tensioning component of the present invention;

[0024] Figure 6 It is a three-dimensional schematic diagram of the strong-tensioning component of the present invention;

[0025] Figure 7 It is a three-dimensional schematic diagram of a part of the strong-tensioning component of the present invention.

[0026] Legend Explanation:

[0027] 10. Support assembly; 11. Core cylinder; 12. Side plate; 13. Guard plate;

[0028] 20. Strong tensioning assembly; 21. Telescopic cylinder; 22. End frame; 23. Movable frame; 24. Fixed frame; 25. Wheel frame assembly; 251. Slide base; 252. Slide post; 253. Universal wheel; 26. Elastic element; 261. Scissor frame; 262. Tension spring; 27. Guide wheel;

[0029] 30. Micro tensioning assembly; 31. Slide frame; 32. Electric telescopic rod; 33. Pin seat; 34. Pin plate;

[0030] 40. Wire Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] As Figure 1 - Figure 7 shown, the present invention provides: a wire drawing machine with controllable tension for metal materials, including a wire pay-off reel and a wire take-up reel and a wire drawing device arranged therebetween, and further including a tension regulator arranged at the wire inlet end of the wire drawing device. The wire 40 of the wire pay-off reel is drawn out and passes through a plurality of wire drawing sleeves included in the wire drawing device, and there are transmission wheels for transmitting wires 40 with different diameters between the wire drawing sleeves, and the wire 40 can be stretched multiple times and then taken up.

[0033] Its tension regulator includes a support assembly 10 and a strong tensioning assembly 20 and a micro tensioning assembly 30 installed therein. Specifically, as Figure 3 and Figure 5 shown, the support assembly 10 includes a core cylinder 11 and side plates 12 symmetrically fixed at both ends thereof, and a plurality of protective plates 13 are fixedly connected between the opposite surfaces of the two side plates 12. Both ends of a plurality of fixed frames 24 are fixedly connected to the opposite surfaces of the two side plates 12, and the slide frame 31 penetrates and slides on the two side plates 12. The support assembly 10 of the tension regulator serves as the main support. It forms the main support through the core cylinder 11 and the side plates 12 on both sides. At the same time, a plurality of protective plates 13 arranged on the outside form a more stable frame structure, which is more stable. Among them, the protective plates 13 can protect the interior. The core cylinder 11 serves as the central support beam and plays the role of stabilizing the structure;

[0034] At the same time, the pin plate 34 and the slide frame 31 penetrate and slide on the side plate 12, and the core cylinder 11 supports the side plate 12 to maintain the stability of the sliding state.

[0035] The strong tensioning assembly 20 includes a plurality of fixed frames 24 and movable frames 23, as well as a number of wheel frame assemblies 25 that slide together thereon. A telescopic cylinder 21 is installed at the end wheel frame assembly 25. Specifically, as Figure 4 and Figure 6 shown, the telescopic cylinder 21 is located inside the core cylinder 11, and one end of it penetrates and is installed on the corresponding side plate 12. The telescopic end of the telescopic cylinder 21 is fixed with an end frame 22, and the end frame 22 slides on the core cylinder 11 and is limited to slide inside the inner wall of the sliding column 252 of the end wheel frame assembly 25. The sliding column 252 is limited to slide on the movable frame 23, and the sliding seat 251 is limited to slide on the fixed frame 24. The telescopic cylinder 21 of the wheel frame assembly 25 is installed through the core cylinder 11, and the length of its telescopic end inside remains unchanged and can drive the end frame 22 to slide. When the end frame 22 moves, it slides on the core cylinder 11, having better axial displacement stability. One end of the end frame 22 slides inside the corresponding sliding column 252 at the end, and can drive it to move together when the end frame 22 moves, so that the sliding column 252 and the sliding seat 251 slide on the movable frame 23 and the fixed frame 24 respectively. When the movable frame 23 moves, the sliding column 252 moves accordingly. At this time, the end frame 22 slides at one end of the sliding column 252 but will not slip off, always maintaining a synchronous moving force.

[0036] An elastic element 26 is commonly provided between adjacent wheel frame assemblies 25. Specifically, as Figure 7 shown, the elastic element 26 includes a scissors frame 261 that moves in a shear shape, and two movable ends of the scissors frame 261 are commonly installed with a tension spring 262. The two ends of the scissors frame 261 are respectively movably connected to two adjacent sliding seats 251. By setting the elastic element 26, which is located on the two sliding seats 251, when the distance between the two sliding seats 251 changes, its scissors frame 261 can be folded or unfolded with each other. At the same time, the scissors frame 261 is subjected to the acting force of the tension spring 262 installed thereon, so that there is always a reset force. When the cylinder acts, it stretches. When the cylinder is closed, the tensile force caused by the inertial force of the wire 40 in the axial direction can stretch it. During its change process, the distance between multiple sliding seats 251 always remains the same, avoiding the situation of inconsistent distances between different sliding seats 251.

[0037] The wheel frame assembly 25 includes a sliding seat 251, a sliding column 252 that penetrates and slides inside it, and a universal wheel 253 fixed to one end of the sliding column 252;

[0038] By setting the universal wheel 253, the inclination angle of the universal wheel 253 is adjusted synchronously with the helix angle of the wire 40, ensuring that the contact surface always matches the tangent direction of the wire 40, eliminating the lateral sliding friction, reducing wear and improving the force transmission efficiency. Avoiding the problem of uneven wear caused by angle mismatch.

[0039] Specifically, as Figure 2 and Figure 7As shown, the strong tensioning assembly 20 also includes a guide wheel 27, which is mounted on the universal wheel 253 at the end position on both sides. The guide wheel 27 is mounted on the universal wheel 253, and the universal wheel 253 can rotate, while the guide wheel 27 is always in a constant direction. The wire 40 of the universal wheel 253 can be transmitted to the guide wheel 27 and is in an axial position direction. When the wire 40 slides under the action of tension, the axial direction provides a tensile force to the wheel frame assembly 25 at the end, and when the telescopic cylinder 21 is closed, the tensile force can overcome the reset force of the tension spring 262 of the elastic element 26 to achieve the displacement of the wheel frame assembly 25. In the process of the displacement of the wheel frame assembly 25, the inclination (helix angle) of the wire 40 will change, so that its sliding resistance will change synchronously. When the inclination increases, the resistance increases, and when the inclination decreases, the resistance decreases, and the angle of the universal wheel 253 matches the tangent angle of the wire 40 accordingly, so as to achieve tension control with low friction.

[0040] Specifically, Figure 2 and Figure 5 As shown, the telescopic end of the electric telescopic rod 32 is fixed to the corresponding side pin seat 33, and the other pin seat 33 is fixed on the slide 31. The two ends of the pin plate 34 are movably connected to the pin seat 33 and the movable frame 23 respectively.

[0041] The micro-tensioning assembly 30 includes a slide 31 sliding in the support assembly 10, and pin seats 33 are symmetrically arranged on both sides of the slide 31, and a pin plate 34 for supporting the movable frame 23 is installed on the pin seat 33, and an electric telescopic rod 32 for controlling the displacement of the two pin seats 33 is installed on one side of the slide 31;

[0042] The electric telescopic rod 32 can move with a pin seat 33 when the length changes. At the same time, the electric telescopic rod 32 itself is subjected to a reaction force to slide with the slide 31. The pin seat 33 on the other side of the slide 31 moves with the movement of the slide 31. At this time, the two pin seats 33 realize relative movement and synchronously press the pin plates 34 thereon to deflect. When the pin plates 34 deflect synchronously, the four movable frames 23 simultaneously move away from or close to each other with the center of the circle as the reference, so as to realize the simultaneous telescopic control of the sliding column 252 in four directions, meet the uniform telescopic amount of the universal wheels 253 at different positions, realize the coordinated and unified regulation of the spiral diameter of the wire 40, and avoid the uneven situation of local increase and local smaller unevenness.

[0043] During active regulation, the electric telescopic rod 32 drives multiple sliding columns 252 on the movable frame 23 to slide through the pin plate 34. The displacement of the universal wheels 253 causes a small change in the helix angle of the wire 40, and the sliding resistance of the wire 40 is slightly adjusted. At the same time, the telescopic cylinder 21 controls the spacing of multiple wheel frame assemblies 25, resulting in a large change in the helix angle and a large adjustment of the sliding resistance of the wire 40. During automatic regulation, the telescopic cylinder 21 shuts down, and the inertial force of the wire 40 stretches the elastic element 26, causing the helix angle to be adjusted when the spacing of the wheel frame assemblies 25 changes. At the same time, the electric telescopic rod 32 is controlled to intervene in the small-tension control.

[0044] Specifically, as Figure 1 shown, the wire 40 is spirally wound and attached to a number of universal wheels 253, and its two ends slide on the guide wheels 27 in an axial sliding state. The wire 40 being spirally wound and attached to the universal wheels 253 can drive the universal wheels 253 to rotate during movement. At the same time, the universal wheels 253 can adapt to the angle along with the inclination of the wire 40;

[0045] The sliding resistance of this solution mainly comes from the friction between the universal wheels 253 and the wire 40, and the resistance will inevitably change with the change of the slope.

[0046] During the process of the change in the slope of the wire 40, the sliding resistance will change synchronously. When the slope increases, the resistance decreases; when the slope decreases, the resistance increases.

[0047] At the same time, when changing the spiral diameter of the wire 40, the change in diameter causes a change in the helix angle, and the resistance will change synchronously.

[0048] This solution can be applied to the coordinated cooperation of active control and automatic control. When in full active control, the spacing and diameter are adjusted respectively through the telescopic cylinder 21 and the electric telescopic rod 32 to achieve rapid adjustment of the spiral cutting angle and small adjustment of the spiral cutting angle. During automatic control, under the action of the axial tensile force, the spacing of multiple wheel frame assemblies 25 changes to achieve rapid response and self-adaptation. At this time, the tension can be finely adjusted by actively regulating the diameter to achieve coordinated adjustment control.

[0049] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A wire drawing machine with controllable tension of metal material, comprising a pay-off roller and a take-up roller and a wire drawing device arranged therebetween, and also comprising a tension regulator arranged at a feeding end of the wire drawing device, wherein the tension regulator comprises a support assembly (10) and a strong tension assembly (20) and a micro tension assembly (30) installed therein, characterized in that: The strong tensioning assembly (20) comprises a plurality of fixed frames (24) and movable frames (23) and a plurality of wheel frame assemblies (25) sliding thereon, a telescopic cylinder (21) being installed at the end wheel frame assembly (25), and an elastic element (26) being arranged between adjacent wheel frame assemblies (25), and the wheel frame assembly (25) comprising a sliding seat (251) and a sliding column (252) sliding therethrough, and a universal wheel (253) fixed to one end of the sliding column (252); The micro-tensioning assembly (30) comprises a slide (31) sliding in the support assembly (10), and pin seats (33) are symmetrically arranged on both sides of the slide (31), and pin plates (34) for supporting the movable frame (23) are installed on the pin seats (33), and an electric telescopic rod (32) for controlling the displacement of the two pin seats (33) is installed on one side of the slide (31); During active control, the electric telescopic rod (32) slides with the plurality of sliding posts (252) on the movable frame (23) through the pin plate (34), and the universal wheel (253) is displaced to cause a small change in the spiral angle of the wire (40), and the sliding resistance of the wire (40) is slightly adjusted. At the same time, the telescopic cylinder (21) controls the spacing of the plurality of wheel frame assemblies (25), and the spiral angle changes greatly, and the sliding resistance of the wire (40) is greatly adjusted. During automatic control, the telescopic cylinder (21) is shut down, and the inertial force of the wire (40) stretches the elastic element (26), so that the spiral angle is adjusted when the spacing of the wheel frame assemblies (25) changes, and at the same time, the electric telescopic rod (32) is controlled to intervene in small tension control.

2. A wire drawing machine with controllable tension of metal material according to claim 1, characterized in that: The support assembly (10) comprises a core tube (11) and side plates (12) symmetrically fixed at both ends thereof, and a plurality of guard plates (13) are fixed to opposite surfaces of the two side plates (12), and the two ends of a plurality of fixing frames (24) are fixedly connected to opposite surfaces of the two side plates (12), and the slide frame (31) penetrates and slides on the two side plates (12).

3. A wire drawing machine with controllable tension of metal material according to claim 2, characterized in that: The telescopic cylinder (21) is located in the core barrel (11), and one end thereof is installed through the corresponding side plate (12). An end frame (22) is fixed to the telescopic end of the telescopic cylinder (21), and the end frame (22) slides on the core barrel (11) and slides with the inner wall of a slide column (252) of a wheel frame assembly (25) at the end. The slide column (252) slides with the movable frame (23), and the slide seat (251) slides with the fixed frame (24).

4. A wire drawing machine with controllable tension of metal material according to claim 1, characterized in that: The elastic element (26) comprises a scissor frame (261) that performs shearing-like movement, and two movable ends of the scissor frame (261) are jointly mounted with a tension spring (262), and the two ends of the scissor frame (261) are respectively movably connected to two adjacent slide seats (251).

5. A wire drawing machine with controllable tension of metal material according to claim 1, characterized in that: The strong tensioning assembly (20) further comprises a guide wheel (27), wherein the guide wheel (27) is mounted on the universal wheels (253) at the end positions on both sides.

6. A wire drawing machine with controllable tension of metal material according to claim 1, characterized in that: The telescopic end of the electric telescopic rod (32) is fixed to a corresponding side pin seat (33), the other pin seat (33) is fixed to the slide frame (31), and the two ends of the pin plate (34) are movably connected to the pin seat (33) and the movable frame (23) respectively.

7. A wire drawing machine with controllable tension of metal material according to claim 1, characterized in that: The wire (40) is spirally wound and attached to a plurality of universal wheels (253), and both ends thereof slide on the guide wheels (27) in an axial sliding state.

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