A broken wire protection device for aluminum wire drawing machine

Abstract

The utility model provides a kind of aluminium wire rod wire drawing machine broken wire protection device, by being provided with line pressing mechanism between the pay-off wheel and the take-up wheel of wire drawing machine, make silk line can keep horizontal through wire drawing die, can reduce the damage to wire drawing die, while it can reduce the probability of wire drawing die fracture, while it can play the limiting effect to silk line, reduce its swing amplitude after fracture;Broken wire detection unit is set on line pressing mechanism, the speed of line pressing mechanism rotation is detected, and feedback to control mechanism, by control mechanism control take-up wheel and pay-off wheel motor close, and control locking mechanism hook forced take-up wheel and pay-off wheel forced stop.Using the above technical scheme, line pressing mechanism effectively reduces the probability of silk line fracture when passing through wire drawing die;Line pressing mechanism limits silk line, reduces the amplitude of silk line swing after fracture, reduces security risk;Locking mechanism timely locks take-up wheel and pay-off wheel, reduces the probability of silk line knot after fracture, reduces the damage to wire drawing machine.

Description

Technical Field

[0001] This utility model relates to the field of wire breakage protection equipment for wire drawing machines, and specifically to a wire breakage protection device for aluminum wire drawing machines. Background Technology

[0002] An aluminum wire drawing machine is a specialized piece of equipment used to continuously draw aluminum wire raw materials through dies, reducing their diameter and increasing their length to obtain wires with precise dimensions and a smooth surface. Its core working principle involves using tensile force to plastically deform the aluminum material through processes such as unwinding, drawing, and winding.

[0003] However, the wire drawing process requires multiple dies. Due to excessive die wear and inclusions within the aluminum material itself, breakage is common during the drawing process. The broken aluminum wire may then be ejected at high speed, damaging the equipment and posing a safety threat to operators. Failure to stop the machine promptly can lead to tangled wires and other problems, causing even greater losses.

[0004] Chinese utility model patent CN220574361U discloses an aluminum alloy wire drawing machine with anti-breakage function, including a wire feeding reel, a device body, and a wire take-up reel. The device body includes a friction assembly and a wire drawing chamber. The left and right side walls of the wire drawing chamber are provided with wire inlet holes and wire outlet holes. The wire drawing chamber is provided with a first limiting assembly, a wire drawing die, a cooling device, and a second limiting assembly from left to right. The cooling device includes a water tank, a wire passage hole, a water pump, a water pipe, and a spray nozzle. The wire passage hole on the right side is provided with a sponge. A servo motor is installed on the left side of the wire take-up reel via an mounting strip and a vertical plate. The servo motor is connected to a reciprocating lead screw, and a traction wheel is installed on the reciprocating lead screw via a slider.

[0005] The above solution utilizes a pay-off reel and a take-up reel to move the aluminum wire through the drawing chamber for wire drawing. Simultaneously, components such as a water tank, water pump, and exhaust system are used to cool the aluminum wire, reducing the risk of breakage due to high temperatures. However, other factors can cause aluminum wire to break, which can damage equipment and threaten personnel safety. Therefore, it is necessary to protect the aluminum wire after breakage to minimize damage to personnel and equipment. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of the above-mentioned technology by proposing a wire breakage protection device for aluminum wire drawing machines, aiming to solve the problem of damage to personnel and equipment caused by wire breakage in the above-mentioned wire drawing machines.

[0007] This utility model provides a wire breakage protection device for an aluminum wire drawing machine, including a wire drawing machine for installing the wire breakage protection device. The wire drawing machine includes a feeding wheel, a take-up wheel, a drawing die, and a drawing chamber. The drawing die is located in the drawing chamber. A wire pressing mechanism is provided between the take-up wheel and the drawing die, and between the feeding wheel and the drawing die, to ensure that the wire passes horizontally through the drawing die. The wire pressing mechanism rotates in contact with the surface of the wire. A wire breakage detection unit is provided on the wire pressing mechanism. Both the feeding wheel and the take-up wheel are provided with locking mechanisms to quickly lock the feeding wheel and the take-up wheel after wire breakage. The wire breakage detection unit and the locking mechanism are electrically connected to a control unit. The control unit controls the locking mechanism to lock the feeding wheel and the take-up wheel according to the wire breakage signal from the wire breakage detection unit.

[0008] Preferably, the pressing mechanism includes a first lifting wheel and a first pressing wheel located between the feeding wheel and the drawing chamber. The lifting wheel is closer to the feeding wheel than the first pressing wheel. A second lifting wheel and a second pressing wheel are provided between the take-up wheel and the drawing die. The second lifting wheel is located between the drawing die and the inner wall of the drawing chamber, and the second pressing wheel is located between the outer wall of the drawing chamber and the take-up wheel. The silk threads pass over and touch the top of the first lifting wheel and the second lifting wheel, and the bottom of the first pressing wheel and the second pressing wheel, respectively; The first lifting roller, the first pressing roller, the second lifting roller, and the second pressing roller are all erected by the erection assembly; The wire breakage detection units are respectively installed on the erection assembly to detect the rotational speed of the first wire lifting wheel, the first wire pressing wheel, the second wire lifting wheel, and the second wire pressing wheel; The wire breakage detection unit transmits the rotation speed data to the control unit, which then controls the locking mechanism to lock the pay-off and take-up reels.

[0009] Preferably, the mounting assembly includes a wheel frame, and the first lifting wheel, the first pressing wheel, the second lifting wheel, and the second pressing wheel are all rotatably connected to the wheel frame via a rotating shaft. The detection end of the wire breakage detection unit is connected to the wheel frame and contacts the end face of the rotating shaft. The wiring terminal of the wire breakage detection unit is electrically connected to the control unit. When the rotation speed of any two or more rotating shafts returns to zero or suddenly accelerates, the control unit controls the locking mechanism to lock the pay-off wheel and the take-up wheel.

[0010] The surfaces of the first lifting wheel, the first pressing wheel, the second lifting wheel, and the second pressing wheel are all provided with inner grooves, and anti-slip rings are connected to the inner grooves, with the anti-slip rings in contact with the surface of the thread.

[0011] Preferably, the take-up reel and the pay-off reel are both rotatably mounted between the inner sides of symmetrically arranged support plates. The locking mechanism includes a ratchet that rotates coaxially with the take-up reel and the pay-off reel and is located on the outer side of the support plate. A shaft is fixedly connected to the outer side of the support plate, and a pawl is rotatably mounted on the shaft. The control unit controls the motors of the take-up reel and the pay-off reel to shut down and controls the pawl to lock the ratchet when the rotational speed of the wire breakage detection unit is abnormal.

[0012] An electromagnet is installed on the outside of the support plate, and the control unit controls the electromagnet to be energized and de-energized. When the electromagnet is energized, the pawl is attracted to the electromagnet, and the pawl separates from the ratchet. When the electromagnet is de-energized, the pawl separates from the electromagnet, and the working surface of the pawl locks with the working surface of the ratchet.

[0013] Preferably, an end cap is provided on the side of the shaft away from the support plate, and a torsion spring is sleeved between the shaft and the pawl and the end cap, with the two torsion arms of the torsion spring being fixedly connected to the pawl and the end cap respectively.

[0014] The end of the pawl near the electromagnet is provided with a pad to increase the contact area between the surface of the pawl and the surface of the electromagnet, and the pad is movably connected to the electromagnet.

[0015] Compared with existing technologies, it has the following beneficial effects: This invention provides a wire breakage protection device for an aluminum wire drawing machine. By installing a wire pressing mechanism between the feed and take-up reels of the drawing machine, the wire is kept horizontal as it passes through the drawing die, reducing damage to the die and the probability of die breakage. The device also limits the wire's movement after breakage, minimizing its swaying amplitude. A wire breakage detection unit is installed on the pressing mechanism to detect its rotation speed and feed it back to the control mechanism. The control mechanism then shuts down the motors of the take-up and feed reels and forces them to stop by controlling the locking hook. Using this technical solution, the wire pressing mechanism effectively reduces the probability of wire breakage when passing through the drawing die; the wire pressing mechanism limits the wire's movement, reducing the amplitude of the wire's swing after breakage and minimizing safety hazards; and the locking mechanism promptly locks the take-up and feed reels, reducing the probability of the wire becoming knotted after breakage and minimizing damage to the drawing machine. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a wire breakage protection device for an aluminum wire drawing machine according to the present invention; Figure 2 This is a front view of a wire breakage protection device for an aluminum wire drawing machine according to the present invention; Figure 3 This is a schematic diagram of the second pressure roller of this utility model; Figure 4 This is a schematic diagram of the mounting components for this utility model; Figure 5 The locking mechanism of this utility model is attempting to; Figure 6 This is a schematic diagram of the torsion spring of this utility model; Figure 7 This is a schematic diagram of the control unit of this utility model.

[0018] In the diagram, 11-pay-off reel; 12-take-up reel; 13-drawing die; 14-drawing chamber; 15-support plate; 2-pressing mechanism; 21-first lifting reel; 22-first pressing reel; 23-second lifting reel; 24-second pressing reel; 25-inner groove; 26-anti-slip ring; 31-wire breakage detection unit; 32-erection assembly; 321-support frame; 322-rotating shaft; 4-control unit; 5-locking mechanism; 51-ratchet; 52-shaft; 521-end cap; 53-pawl; 54-electromagnet; 55-torsion spring; 56-pad. Detailed Implementation

[0019] To better understand the structure, functional features, and advantages of this utility model, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings: Example: like Figures 1 to 7As shown, this utility model provides a wire breakage protection device for an aluminum wire drawing machine. The device includes a wire drawing machine for installing the protection device. The machine includes a feed roller 11, a take-up roller 12, a drawing die 13, and a drawing chamber 14. The drawing die 13 is located inside the drawing chamber 14. These components are existing technology and are the main components of the wire drawing machine capable of extending, thinning, and lengthening aluminum wire. A wire pressing mechanism 2 is provided between the take-up roller 12 and the drawing die 13, and between the feed roller 11 and the drawing die 13, to ensure the wire passes horizontally through the drawing die 13. The wire pressing mechanism 2 rotates in contact with the surface of the wire. The wire is stretched as it passes through the drawing die 13, and maintaining its horizontal position reduces friction between the wire and the inlet / outlet of the drawing die 13, thus reducing damage to the inlet / outlet and decreasing the probability of wire breakage. Furthermore, the wire pressing mechanism 2's restriction of the wire's position reduces the amplitude of its swing after breakage, minimizing damage. The pressing mechanism 2 is equipped with a wire breakage detection unit 31. Both the pay-off reel 11 and the take-up reel 12 are equipped with locking mechanisms 5 to quickly lock them in case of wire breakage. Both the wire breakage detection unit 31 and the locking mechanisms 5 are electrically connected to the control unit 4. The control unit 4 controls the locking mechanisms 5 to lock the pay-off reel 11 and the take-up reel 12 based on the wire breakage signal from the detection unit 31. The wire breakage detection unit 31 detects the rotational speed of the pressing mechanism 2. If the rotational speed of the pressing mechanism 2 is abnormal, the control mechanism 4 controls the motors of the pay-off reel 11 and the take-up reel 12 to shut down. However, after the motors shut down, they will not stop immediately due to inertia, causing the wire to continue winding and resulting in greater losses. Therefore, the locking mechanisms 5 are installed to forcibly stop the pay-off reel 11 and the take-up reel 12 after power failure to prevent further losses.

[0020] As another embodiment, such as Figures 2 to 4 As shown, the pressing mechanism 2 of this application includes a first lifting wheel 21 and a first pressing wheel 22 located between the feed wheel 11 and the drawing chamber 14. The lifting wheel is closer to the feed wheel 11 than the first pressing wheel 22. A second lifting wheel 23 and a second pressing wheel 24 are disposed between the take-up wheel 12 and the drawing die 13. The second lifting wheel 23 is located between the drawing die 13 and the inner wall of the drawing chamber 14, and the second pressing wheel 24 is located between the outer wall of the drawing chamber 14 and the take-up wheel 12. The wire passes through and contacts the area above the first lifting wheel 21 and the second lifting wheel 23, and below the first pressing wheel 22 and the second pressing wheel 24, respectively.

[0021] As the aluminum wire on the feed roller 11 decreases, a first lifting roller 21 is needed to lift the wire, followed by a first pressing roller 22 pressing the wire to a position perpendicular to the entrance of the drawing die 13. If the first lifting roller 21 is removed, the lowest point of the pressing roller 22 would need to be lower than the height above the shaft of the feed roller 11, potentially resulting in insufficient pressing. Therefore, the first lifting roller 21 is necessary to lift the wire first. The second lifting roller 23 is located between the drawing die 13 and the inner wall of the drawing chamber 14 because the exit of the drawing die 13 is prone to breakage; this location allows for rapid detection. As the take-up roller 12 continuously thickens, without the second pressing roller 24, the wire would detach from the second lifting roller 23 and directly contact the exit of the drawing die 13, increasing the risk of wire breakage.

[0022] The first lifting roller 21, the first pressing roller 22, the second lifting roller 23, and the second pressing roller 24 are all mounted by the mounting assembly 32. The mounting assembly 32 includes a roller frame 321. The first lifting roller 21, the first pressing roller 22, the second lifting roller 23, and the second pressing roller 24 are all rotatably connected to the roller frame 321 via a rotating shaft 322. The detection end of the wire breakage detection unit 31 is connected to the roller frame 321 and contacts the end face of the rotating shaft 322. The surfaces of the first lifting roller 21, the first pressing roller 22, the second lifting roller 23, and the second pressing roller 24 are all provided with inner grooves 25. Anti-slip rings 26 are connected to the inner grooves 25 and contact the surface of the thread. The first lifting roller 21, the first pressing roller 22, the second lifting roller 23, and the second pressing roller 24 are all inertial rollers, meaning they rotate due to friction from the thread. Therefore, each has an inner groove 25 on its surface, and an anti-slip ring 26 is embedded in the inner groove 25. The anti-slip ring 26 is made of rubber to increase friction with the thread. The broken thread detection unit 31 is a speed sensor, its end of which is fitted into a hole in the wheel frame 321 where the rotating shaft 322 is mounted. The end of the speed sensor can directly abut against the end of the rotating shaft 322, resulting in higher detection accuracy but greater wear on the sensor. Alternatively, it can be connected via a coupling, with both ends of the coupling connected to the end of the rotating shaft 322 and the detection end of the broken thread detection unit 31, respectively.

[0023] The wiring terminals of the wire breakage detection unit 31 are electrically connected to the control unit 4. When the speed of any two or more rotating shafts 322 drops to zero or suddenly accelerates, the control unit 4 controls the locking mechanism 5 to lock the pay-off reel 11 and the take-up reel 12. The control here uses the speed variation of any two or more rotating shafts 322, rather than just any one shaft 322, to prevent the anti-slip ring 26 from aging and causing one of the rotating shafts 322 to drop to zero. The speed variation of any two or more rotating shafts 322 is more reliable. Therefore, to ensure stable detection results, the surface of the anti-slip ring 26 needs to be routinely inspected and replaced. The control unit 4 is the controller of the wire drawing machine, i.e., the control center.

[0024] As another embodiment, such as Figure 5 As shown in the figure, the take-up reel 12 and the pay-off reel 11 are both rotatably mounted between the inner sides of symmetrically arranged support plates 15. The locking mechanism includes a ratchet 51 mounted on the outer side of the support plate 15 and rotating coaxially with the take-up reel 12 and the pay-off reel 11. A shaft 52 is fixedly connected to the outer side of the support plate 15, and a pawl 53 is rotatably mounted on the shaft 52. The control unit 4 detects an abnormal speed based on the rotational speed of the wire breakage detection unit 31, controls the motors of the take-up reel 12 and the pay-off reel 11 to shut down, and controls the pawl 53 to lock the ratchet 51. The support plate 15 is vertically welded to the base of the wire drawing machine. The ratchet 51 is a one-way gear, and its working surface can interlock with the working surface of the pawl 53, but it cannot interlock when the non-working surfaces are in contact. The shaft 52 is perpendicular to the outer surface of the support plate 15 and is welded to it.

[0025] An electromagnet 54 is provided on the outside of the support plate 15, and the control unit 4 controls the electromagnet 54 to be energized and de-energized. When the electromagnet 54 is energized, the pawl 53 is attracted to the electromagnet 54, and the pawl 53 is separated from the ratchet 51. When the electromagnet 54 is de-energized, the pawl 53 separates from the electromagnet 54, and the working surface of the pawl 53 locks with the working surface of the ratchet 51.

[0026] The electromagnet 54 is existing technology, and it is usually equipped with a metal protective shell. When the electromagnet 54 is energized, the pawl 53 connects to the outer protective shell. Both the pawl 53 and the ratchet 51 are made of carbon steel, so the pawl 53 can be attracted after the electromagnet 54 is energized. The pawl 53 can be positioned above or to the side of the ratchet 51. In this case, the pawl 53 can be driven to the teeth of the ratchet 51 by gravity and latch onto the working surface. In this application, the pawl 53 is positioned above the ratchet 51. When the pawl 53 lands on the working surface of the ratchet 51 teeth, the impact force at the moment of contact is large due to inertia, and the pawl 53 may be bounced off. Because the pawl 53 is positioned above the ratchet 51, it can fall back onto the ratchet 51 more quickly after being bounced off.

[0027] An end cap 521 is provided on the side of the shaft 52 away from the support plate 15. A torsion spring 55 is sleeved between the shaft 52, the pawl 53, and the end cap 521. The two torsion arms of the torsion spring 55 are fixedly connected to the pawl 53 and the end cap 521, respectively. The end cap 521 is welded to the end of the shaft 52. The torsion spring 55 is provided to store force when the electromagnet 54 attracts the pawl 53. After the electromagnet 54 is de-energized, the torsion spring 55 drives the pawl 53 to quickly engage with the ratchet 51, and it can fall back down more quickly after being released.

[0028] A pad 56 is provided at the end of the pawl 53 near the electromagnet 54 to increase the contact area between the surface of the pawl 53 and the surface of the electromagnet 54. The pad 56 is movably connected to the electromagnet 54. Since the pawl 53 rotates in an arc-shaped trajectory, the contact area is small after being attracted by the electromagnet 54. Therefore, the pad 56 is provided to increase the contact area and make the attraction more stable. The pad 56 is integrally formed or welded to the pawl 53.

[0029] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A wire breakage protection device for an aluminum wire drawing machine, comprising a wire drawing machine for installing the wire breakage protection device, the wire drawing machine comprising a feed reel (11), a take-up reel (12), a drawing die (13), and a drawing chamber (14), wherein the drawing die (13) is located within the drawing chamber (14), characterized in that... A wire pressing mechanism (2) is provided between the take-up reel (12) and the drawing die (13), and between the pay-off reel (11) and the drawing die (13) to ensure that the wire passes horizontally through the drawing die (13). The wire pressing mechanism (2) rotates and contacts the surface of the wire. A wire breakage detection unit (31) is provided on the wire pressing mechanism (2). A locking mechanism (5) is provided on both the pay-off reel (11) and the take-up reel (12) to quickly lock the pay-off reel (11) and the take-up reel (12) after the wire breaks. The wire breakage detection unit (31) and the locking mechanism (5) are electrically connected to the control unit (4). The control unit (4) controls the locking mechanism (5) to lock the pay-off reel (11) and the take-up reel (12) according to the wire breakage signal of the wire breakage detection unit (31).

2. The wire breakage protection device for aluminum wire drawing machine according to claim 1, characterized in that, The pressing mechanism (2) includes a first lifting wheel (21) and a first pressing wheel (22) located between the feeding wheel (11) and the drawing chamber (14). The lifting wheel is closer to the feeding wheel (11) than the first pressing wheel (22). A second lifting wheel (23) and a second pressing wheel (24) are provided between the take-up wheel (12) and the drawing die (13). The second lifting wheel (23) is located between the drawing die (13) and the inner wall of the drawing chamber (14), and the second pressing wheel (24) is located between the outer wall of the drawing chamber (14) and the take-up wheel (12). The threads pass over and touch the top of the first lifting wheel (21) and the second lifting wheel (23), and the bottom of the first pressing wheel (22) and the second pressing wheel (24); The first lifting roller (21), the first pressing roller (22), the second lifting roller (23) and the second pressing roller (24) are all supported by the support assembly (32); The wire breakage detection unit (31) is respectively installed on the erection assembly (32) to detect the rotation speed of the first wire lifting wheel (21), the first wire pressing wheel (22), the second wire lifting wheel (23) and the second wire pressing wheel (24); The wire breakage detection unit (31) transmits the rotation speed data to the control unit (4), and the control unit (4) controls the locking mechanism (5) to lock the wire feeding reel (11) and the wire taking reel (12).

3. The wire breakage protection device for aluminum wire drawing machine according to claim 2, characterized in that, The mounting assembly (32) includes a wheel frame (321). The first lifting wheel (21), the first pressing wheel (22), the second lifting wheel (23), and the second pressing wheel (24) are all rotatably connected to the wheel frame (321) via a rotating shaft (322). The detection end of the wire breakage detection unit (31) is connected to the wheel frame (321) and contacts the end face of the rotating shaft (322). The wiring terminal of the wire breakage detection unit (31) is electrically connected to the control unit (4). When the rotation speed of any two or more of the rotating shafts (322) returns to zero or suddenly accelerates, the control unit (4) controls the locking mechanism (5) to lock the pay-off wheel (11) and the take-up wheel (12).

4. The wire breakage protection device for aluminum wire drawing machine according to claim 2, characterized in that, The take-up reel (12) and the pay-off reel (11) are both rotatably mounted between the inner sides of the symmetrically arranged support plates (15). The locking mechanism includes a ratchet (51) arranged on the outer side of the support plate (15) and rotating coaxially with the take-up reel (12) and the pay-off reel (11). A shaft (52) is fixedly connected to the outer side of the support plate (15). A pawl (53) is rotatably mounted on the shaft (52). The control unit (4) controls the motors of the take-up reel (12) and the pay-off reel (11) to shut down according to the abnormal rotation speed of the wire breakage detection unit (31), and controls the pawl (53) to lock the ratchet (51).

5. The wire breakage protection device for an aluminum wire drawing machine according to claim 4, characterized in that, An electromagnet (54) is provided on the outside of the support plate (15), and the control unit (4) controls the electromagnet (54) to be energized and de-energized; When the electromagnet (54) is energized, the pawl (53) is attracted to the electromagnet (54), and the pawl (53) is separated from the ratchet (51); When the electromagnet (54) is de-energized, the pawl (53) separates from the electromagnet (54), and the working surface of the pawl (53) locks with the working surface of the ratchet (51).

6. The wire breakage protection device for an aluminum wire drawing machine according to claim 4, characterized in that, An end cap (521) is provided on the side of the shaft (52) away from the support plate (15). A torsion spring (55) is sleeved between the pawl (53) and the end cap (521) on the shaft (52). The two torsion arms of the torsion spring (55) are fixedly connected to the pawl (53) and the end cap (521) respectively.

7. The wire breakage protection device for an aluminum wire drawing machine according to claim 5, characterized in that, The pawl (53) near the end of the electromagnet (54) is provided with a pad (56) to increase the contact area between the surface of the pawl (53) and the surface of the electromagnet (54), and the pad (56) is movably connected to the electromagnet (54).

8. The wire breakage protection device for an aluminum wire drawing machine according to claim 2, characterized in that, The surfaces of the first lifting wheel (21), the first pressing wheel (22), the second lifting wheel (23) and the second pressing wheel (24) are all provided with inner grooves (25), and the inner grooves (25) are connected to anti-slip rings (26), which are in contact with the surface of the thread.

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