Pay-off alarm device and pay-off method for steel wire with non-standard length

Abstract

The invention relates to the technical field of steel cords, in particular to a pay-off alarm device and a pay-off method.The pay-off alarm device comprises an insulating pinch roller, the insulating pinch roller is arranged on one side of a spool through a connecting part, the insulating pinch roller can be attached to the surface of a steel wire layer wound around a spool shaft and can rotate along with rotation of the spool, and the insulating pinch roller is arranged on the other side of the spool; defining a contact section of the insulating pinch roller and the surface of the steel wire layer as a contact surface; and the conductive rod extends towards the two sides of the insulating pinch roller along the axial direction of the insulating pinch roller, and a gap is formed between the conductive rod and the side wall of the spool. According to the pay-off alarm device, the insulating pressing wheel can be kept pressed on the surface of the steel wire layer and descends along with reduction of the thickness of the steel wire layer, a certain distance is kept between the conductive rod and the steel wire layer all the time, and the front-stage steel wire and the rear-stage steel wire are connected through the lapping structure; and one section of outgoing line of the rear-stage steel wire is contacted with the conductive rod, so that an alarm can be generated to prevent the spool from running out.

Description

Technical Field

[0001] The invention relates to the technical field of steel cords, and in particular to a wire-paying alarm device and a wire-paying method for steel wires of non-standard lengths. Background Art

[0002] When steel wire products are produced, there are often short-length monofilaments or strands of non-standard lengths caused by broken wires. During normal production, the strands or monofilaments used for paying out the wires have different lengths of short lengths due to broken wires. For example, a normal roll of 10,000-meter-long steel wire is paid out into five sections of 2,000-meter-long products. However, due to broken wires during the pay-out and re-welding, the last roll cannot actually reach a length of 2,000 meters, and the production equipment cannot correctly calculate the pay-out length in meters, and still produces according to the length of 2,000 meters. Therefore, the last section of the product is empty, and the existing broken wire detection can only be used to detect broken wires or empty wires and then alarm and stop the machine, and cannot stop the machine in time before the empty wire.

[0003] Therefore, when broken wire or loose wire is detected, in fact, a section of single wire or strand has passed through part of the equipment, which needs to be manually re-threaded and welded. In addition, this part of broken wire cannot form a product of a predetermined length. Hundreds or thousands of meters need a separate pay-off wheel for pay-off, thus resulting in a waste of I-spool resources. Summary of the invention

[0004] In view of the technical problems existing in the prior art of steel cord pay-off, the first aspect of the present invention proposes a pay-off alarm device for steel wires of non-standard lengths, comprising:

[0005] An insulating pressure wheel is arranged on one side of the I-shaped wheel through a connecting component, and the insulating pressure wheel is arranged to be able to fit the surface of the steel wire layer wound outside the I-shaped wheel shaft and can rotate with the rotation of the I-shaped wheel, and the section where the insulating pressure wheel and the surface of the steel wire layer contact is defined as the contact surface;

[0006] The conductive rod extends along the axial direction of the insulating pressure wheel to both sides of the insulating pressure wheel, and there is a gap between the conductive rod and the side wall of the I-shaped wheel;

[0007] An alarm circuit, comprising an alarm connected in series to the circuit and a power source for supplying power to the alarm, wherein the positive electrode of the alarm circuit is connected to the steel wire wound on the I-shaped wheel, and the negative electrode is connected to the conductive rod;

[0008] The diameter of the conductive rod is smaller than the diameter of the insulating pressure wheel, so that a predetermined distance H is always maintained between the conductive rod and the contact surface;

[0009] At least two sections of steel wire are wound around the surface of the I-shaped wheel. When unwinding, the front-stage steel wire is released before the rear-stage steel wire. The front-stage steel wire and the rear-stage steel wire are connected by a lap structure. The lap structure is configured so that when the front-stage steel wire is unwound to the end, the front end of the rear-stage steel wire is thrown into contact with the conductive rod, so that the alarm circuit is turned on and the alarm device sounds an alarm.

[0010] Preferably, the connecting component is configured to include a rotating shaft and a connecting arm connected to the rotating shaft, the rotating shaft is arranged on one side of the I-shaped wheel, the connecting arm can rotate around the rotating shaft, and the insulating pressure wheel is arranged at an end of the connecting arm away from the rotating shaft. When the thickness of the steel wire layer changes, the connecting arm swings around the rotating shaft to keep the insulating pressure wheel in contact with the steel wire layer.

[0011] Preferably, a U-shaped groove is provided at the upper end of the connecting arm, and the insulating pressure wheel is connected to the U-shaped groove.

[0012] Preferably, the lapped structure includes a plurality of turns of a limiting coil at the end of the front-stage steel wire and a lead-out wire at the front end of the rear-stage steel wire, and the plurality of turns of the limiting coil are pressed on the outer layer of the lead-out wire.

[0013] Preferably, the lead wire is arranged along the axial direction of the I-shaped wheel shaft, and the free end faces the side wall of the I-shaped wheel.

[0014] Preferably, a plurality of turns of the limiting coil are sequentially wound around the outer wall of the lead wire in a direction from the root of the lead wire to the free end.

[0015] Preferably, the length of the lead wire is greater than fifteen centimeters, and the number of turns of the limiting coil is greater than three.

[0016] Preferably, at least one section of the rear-stage steel wire is wound around the surface of the I-shaped wheel shaft and has a length of less than two meters.

[0017] The second aspect of the present invention proposes a technical solution, a method for paying out a non-standard length steel wire, using the above-mentioned paying out alarm device for a non-standard length steel wire, comprising the following steps:

[0018] Step 1: Place the insulating pressure wheel on the steel wire layer surface of the I-shaped wheel;

[0019] Step 2, using the unwinding device to drive the spool to unwind;

[0020] Step 3: When the alarm sounds, use the unwinding device to drive the spool to brake until the spool stops rotating;

[0021] Step 4, weld the end of the front-stage steel wire and the front end of the rear-stage steel wire together, and continue to use the unwinding equipment to drive the I-shaped wheel to unwind;

[0022] Repeat steps 3 and 4 until the thickness of the steel wire layer on the surface of the completed I-shaped wheel is less than the thickness of one layer of steel wire.

[0023] Preferably, in step 3, the speed of the I-shaped wheel brake is set so that the end of the front-stage steel wire and the front end of the rear-stage steel wire are still in contact before the I-shaped wheel stops completely.

[0024] Compared with the prior art, the advantages of the present invention are:

[0025] The wire-releasing alarm device proposed in the present application has an insulating pressure wheel that can keep pressing on the surface of the steel wire layer and descend as the thickness of the steel wire layer decreases. The conductive rod always maintains a certain distance from the steel wire layer. The front-stage steel wire and the rear-stage steel wire are connected by a latching structure. Once the front-stage steel wire is released to the latch structure, a section of the lead-out wire of the rear-stage steel wire contacts the conductive rod, so that the alarm circuit is triggered. This alarm can prevent the I-shaped wheel from running empty, that is, the wheel can be stopped in time before it runs empty, which is convenient for personnel to handle and does not require re-threading. In addition, this method can reel in multiple short-length steel wires on the same I-shaped wheel for release, which will not cause waste of the I-shaped wheel and can also handle the release of short-length steel wires in a unified and centralized manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For clarity, not every component is labeled in every figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of a wire-laying alarm device for non-standard length steel wire shown in the present invention;

[0028] Figure 2 It is a structural schematic diagram of the alarm circuit shown in the present invention;

[0029] Figure 3 is a schematic diagram of the insulating pressure wheel and the steel wire layer in contact with each other shown in the present invention;

[0030] Figure 4 It is a structural schematic diagram of the lapped structure shown in the present invention;

[0031] Figure 5 It is a schematic diagram of the I-shaped wheel shown in the present invention being wound with two sections of steel wire;

[0032] Figure 6 It is a schematic diagram of the I-shaped wheel shown in the present invention being wound with multiple sections of steel wire. DETAILED DESCRIPTION

[0033] In order to better understand the technical content of the present invention, specific embodiments are given and described as follows in conjunction with the accompanying drawings.

[0034] [Wire-paying alarm device for non-standard length wire]

[0035] Combination Figure 1 As shown, the first aspect of the present invention provides a wire-laying alarm device for non-standard length steel wires, comprising an insulating pressure wheel 14, a conductive rod 15 and an alarm circuit.

[0036] Among them, the insulating pressure wheel 14 is arranged on one side of the I-shaped wheel 100 through a connecting component. The insulating pressure wheel 14 is configured to be able to fit on the surface of the steel wire layer 102 wound outside the I-shaped wheel shaft 101, and can rotate with the rotation of the I-shaped wheel 100. The cross-section where the insulating pressure wheel 14 and the surface of the steel wire layer 102 contact is defined as the contact surface 103.

[0037] It should be understood that the steel wire layer 102 is a structural layer formed by steel wires or cords wound outside the I-shaped wheel axle 101. The steel wires wound outside the I-shaped wheel axle 101 are taken as an example below. When the I-shaped wheel is fully wound, the thickness of the steel wire layer 102 is the thickest. As the unwinding begins, the steel wires are released and the thickness of the steel wire layer 102 gradually becomes thinner.

[0038] However, if the steel wire layer 102 becomes thinner and thinner until the steel wire is completely released, there may be a risk of an empty wheel. Therefore, it is necessary to provide an alarm before the last steel wire end is released.

[0039] like Figure 2 As shown, the conductive rod 15 extends along the axial direction of the insulating pressure wheel 14 to both sides of the insulating pressure wheel 14, and there is a gap between the conductive rod 15 and the side wall of the I-shaped wheel 100. The alarm circuit includes an alarm 20 connected in series to the circuit and a power supply for supplying power to the alarm 20. The positive electrode 21 of the alarm circuit is connected to the steel wire wound on the I-shaped wheel 100, and the negative electrode 22 is connected to the conductive rod 15.

[0040] The conductive rod 15 and the steel wire layer 102 are respectively used as extensions of the negative electrode and the positive electrode of the alarm circuit. Once the steel wire layer 102 and the conductive rod 15 are in contact, the alarm circuit is turned on and the alarm device 20 sounds an alarm.

[0041] Furthermore, a self-closing circuit is also provided in the alarm circuit, and the self-closing circuit can enable the alarm device 20 to continue to alarm without disconnection after the alarm is issued.

[0042] In order to keep the conductive rod 15 and the steel wire layer 102 insulated during the thickness reduction process of the steel wire layer 102, Figure 3 As shown, the diameter of the conductive rod 15 is smaller than the diameter of the insulating pressure wheel 14 , so that a predetermined distance H is always maintained between the conductive rod 15 and the contact surface 103 .

[0043] Further, such as Figure 1 and Figure 4 As shown, at least two sections of steel wire are wound on the surface of the I-shaped wheel 100. When unwinding, the front-stage steel wire 32 is released before the rear-stage steel wire 31. The front-stage steel wire 32 and the rear-stage steel wire 31 are connected by a lap structure 30. The lap structure 30 is configured so that when the front-stage steel wire 32 is unwound to the end, the front end of the rear-stage steel wire 31 is thrown to contact the conductive rod 15, so that the alarm circuit is turned on and the alarm 20 sounds an alarm.

[0044] In this way, when the front-stage steel wire 32 is unwound to the end, the front end of the rear-stage steel wire 31 is thrown out by centrifugal force and contacts the conductive rod 15. At this time, the alarm circuit is turned on, the alarm device 20 generates an alarm, and at the same time, the driving device that drives the I-shaped wheel 100 to release the wire brakes, so that the I-shaped wheel 100 gradually stops and stops before the end of the front-stage steel wire 32 separates from the I-shaped wheel 100. Therefore, the user can weld the front-stage steel wire 32 and the rear-stage steel wire 31 to form a complete steel wire and continue to release the wire.

[0045] In an optional embodiment, if Figure 1 As shown, the connecting component is configured to include a rotating shaft 11 and a connecting arm 12 connected to the rotating shaft 11, the rotating shaft 11 is arranged on one side of the I-shaped wheel 100, the connecting arm 12 can rotate around the rotating shaft 11, and the insulating pressure wheel 14 is arranged at one end of the connecting arm 12 away from the rotating shaft 11. When the thickness of the steel wire layer 102 changes, the connecting arm 12 swings around the rotating shaft 11 to keep the insulating pressure wheel 14 in contact with the steel wire layer 102.

[0046] Specifically, when the insulating pressure wheel 14 is not needed to press on the steel wire layer 102 (for example, when welding the steel wire or replacing the I-shaped wheel is required), the connecting arm 12 is manually flipped over until the insulating pressure wheel 14 is disengaged from the steel wire layer 102, especially the connecting arm 12 is tilted toward the side away from the I-shaped wheel 100; when the insulating pressure wheel 14 is needed to press on the steel wire layer 102, the connecting arm 12 is manually flipped over until the insulating pressure wheel 14 is in contact with the steel wire layer 102, especially the connecting arm 12 is tilted toward the side close to the I-shaped wheel 100. At this time, the insulating pressure wheel 14 can always maintain contact with the steel wire layer 102 by gravity.

[0047] Specifically, a U-shaped groove 13 is provided at the upper end of the connecting arm 12 , and the insulating pressing wheel 14 is connected to the U-shaped groove 13 .

[0048] Combination Figure 1 and Figure 4 As shown, the lapped structure 30 includes a multi-turn limiting coil 322 at the end of the front-stage steel wire 32 and a lead wire 311 at the front end of the rear-stage steel wire 31 , and the multi-turn limiting coil 322 is pressed on the outer layer of the lead wire 311 .

[0049] Furthermore, the lead wire 311 is arranged along the axis of the spool shaft 101, and the free end faces the side wall of the spool 100. The multi-turn limit coil 322 is sequentially wound around the outer wall of the lead wire 311 from the root of the lead wire 311 to the free end.

[0050] In this way, when the multi-turn limiting coil 322 at the end of the front-stage steel wire 32 gradually detaches from the surface of the lead-out wire 311 during the wire-releasing process, the free end of the lead-out wire 311 is first released from the state of being pressed by the limiting coil 322. At the same time, due to the centrifugal force of the rotation of the I-shaped wheel, the free end of the lead-out wire 311 is thrown outward. During the throwing process, it rotates with the I-shaped wheel, and therefore, it will contact the conductive rod 15, at which time the alarm circuit is closed and the alarm device 20 generates an alarm.

[0051] In an optional embodiment, the length of the lead wire 311 is greater than fifteen centimeters. In this way, once the limiting coil 322 at the free end of the lead wire 311 is untied, it will definitely contact the conductive rod 15 to trigger an alarm.

[0052] Optionally, the number of turns of the limiting coil 322 is greater than three turns. In this way, sufficient time can be provided for the process from starting the brake to stopping the I-shaped wheel, ensuring that the front-stage steel wire 32 will not be separated from the I-shaped wheel.

[0053] Combination Figure 3 As shown, when setting the overlapping structure 30, the rear stage steel wire 31 ( Figure 4 The red line shown), then wind the front stage steel wire 32 ( Figure 4 The blue line shown in the figure), the tail end 313 of the rear stage steel wire is normally wound in circles, and when it is close to the lead-out wire 311 of the front stage steel wire 32, the steel wire is bent in reverse to form an annular ring 312 with the opposite winding direction. At this time, a bent buckle is formed between the lead-out wire 311 of the front stage steel wire 32 and the annular ring 312, and the end 323 of the front stage steel wire 32 is inserted into the buckle, and then multiple turns are wound in reverse at the root of the lead-out wire 311 toward the free end to form a limiting coil 322, and finally it is wound around the end 323 in the normal direction to form a pay-off segment 321.

[0054] Specifically, during the wire-paying process, the wire-paying segment 321 is paid out first, followed by the limit coil 322. When it reaches the limit coil 322, the I-spool brake stops, and the user manually welds the end 323 of the front-stage steel wire 32 and the lead-out wire 311 of the front-stage steel wire 32 together, and winds the welded steel wire and the annular ring 312 around the outer wall of the I-spool and continues to pay out the wire (if the rear-stage steel wire 31 is the last segment on the surface of this I-spool, the wire-paying will not continue).

[0055] Combination Figure 5As shown, two sections of steel wires are wound around the surface of the I-shaped wheel 100, namely the rear-stage steel wire 31 and the front-stage steel wire 32. When the front-stage steel wire 32 is paid out, no more wire is paid out to prevent it from running empty.

[0056] Combination Figure 6 As shown, four sections of steel wire are wound around the surface of the I-shaped wheel 100, and each section of steel wire is a short-length steel wire of non-standard length caused by wire breakage. Specifically, steel wire L4, steel wire L3, steel wire L2, and steel wire L1 are wound around the surface of the I-shaped wheel 100 in sequence, and every two sections of steel wire are connected by a lap structure 30.

[0057] In this way, multiple short-length steel wires can be wound on one I-spool for pay-off, without occupying any extra I-spools and without running empty.

[0058] Preferably, at least one section of the rear-stage steel wire 31 is wound around the surface of the I-shaped wheel shaft 101 and has a length of less than two meters, serving as a warning steel wire to prevent the wheel from being empty.

[0059] [How to pay out steel wire of non-standard length]

[0060] The second aspect of the present invention proposes a technical solution, a method for paying out a non-standard length steel wire, using the above-mentioned paying out alarm device for a non-standard length steel wire, comprising the following steps:

[0061] Step 1, placing the insulating pressure wheel 14 on the surface of the steel wire layer 102 of the I-shaped wheel;

[0062] Step 2, using the unwinding device to drive the spool 100 to unwind;

[0063] Step 3: When the alarm 20 sounds, the unwinding device is used to drive the spool 100 to brake until the spool 100 stops rotating;

[0064] Step 4, welding the end of the front-stage steel wire 32 and the front end of the rear-stage steel wire 31 together, and continuing to use the unwinding device to drive the spool 100 to unwind;

[0065] Steps 3 and 4 are repeated until the thickness of the steel wire layer 102 on the surface of the spool 100 is less than the thickness of one layer of steel wire.

[0066] Preferably, in step 3, the braking speed of the I-shaped wheel 100 is set to keep the end of the front-stage steel wire 32 and the front end of the rear-stage steel wire 31 in contact before the I-shaped wheel stops completely. That is, the number of turns of the limit coil 322 is greater than a certain length, which can provide sufficient time for the process from starting the braking of the I-shaped wheel to stopping, ensuring that the front-stage steel wire 32 will not be separated from the I-shaped wheel, so that the user can weld the front-stage steel wire 32 and the rear-stage steel wire 31 together.

[0067] In combination with the above embodiments, the wire-releasing alarm device proposed in the present application, the insulating pressure wheel can remain pressed on the surface of the steel wire layer, and descends as the thickness of the steel wire layer decreases, the conductive rod always maintains a certain distance from the steel wire layer, and is connected by a latching structure between the front-stage steel wire and the rear-stage steel wire. Once the front-stage steel wire is released to the latch structure, a section of the lead-out wire of the rear-stage steel wire contacts the conductive rod, so that the alarm circuit is triggered. This alarm can prevent the I-shaped wheel from running empty, that is, the wheel can be stopped in time before it runs empty, which is convenient for personnel to handle and does not require re-threading. In addition, this method can be used to reel in multiple short-length steel wires on the same I-shaped wheel for release, which will not cause waste of the I-shaped wheel and can also handle the release of short-length steel wires in a unified and centralized manner.

[0068] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A wire-laying alarm device for non-standard length steel wire, characterized in that: include: An insulating pressure wheel (14) is arranged on one side of the I-shaped wheel (100) through a connecting component, and the insulating pressure wheel (14) is arranged to be able to fit on the surface of the steel wire layer (102) wound outside the I-shaped wheel shaft (101), and can rotate with the rotation of the I-shaped wheel (100), and the section where the insulating pressure wheel (14) and the surface of the steel wire layer (102) contact is defined as a contact surface (103); The conductive rod (15) extends along the axial direction of the insulating pressure wheel (14) toward both sides of the insulating pressure wheel (14), and has a gap between the conductive rod and the side wall of the I-shaped wheel (100); An alarm circuit comprises an alarm device (20) connected in series to the circuit and a power source for supplying power to the alarm device (20), wherein the positive electrode (21) of the alarm circuit is connected to a steel wire wound on the I-shaped wheel (100), and the negative electrode (22) is connected to a conductive rod (15); The diameter of the conductive rod (15) is smaller than the diameter of the insulating pressure wheel (14), so that a predetermined distance H is always maintained between the conductive rod (15) and the contact surface (103); At least two sections of steel wire are wound on the surface of the I-shaped wheel (100). When unwinding, the front-stage steel wire (32) is unwound before the rear-stage steel wire (31). The front-stage steel wire (32) and the rear-stage steel wire (31) are connected by a lap joint structure (30). The lap joint structure (30) is configured so that when the front-stage steel wire (32) is unwound to the end, the front end of the rear-stage steel wire (31) is thrown to contact the conductive rod (15), so that the alarm circuit is turned on and the alarm device (20) sounds an alarm.

2. The non-standard length wire pay-off alarm device according to claim 1 is characterized in that: The connecting component is configured to include a rotating shaft (11) and a connecting arm (12) connected to the rotating shaft (11); the rotating shaft (11) is arranged on one side of the I-shaped wheel (100); the connecting arm (12) can rotate around the rotating shaft (11); the insulating pressure wheel (14) is arranged at one end of the connecting arm (12) away from the rotating shaft (11); when the thickness of the steel wire layer (102) changes, the connecting arm (12) swings around the rotating shaft (11) to keep the insulating pressure wheel (14) in contact with the steel wire layer (102).

3. The non-standard length wire pay-off alarm device according to claim 2, characterized in that: A U-shaped groove (13) is provided at the upper end of the connecting arm (12), and the insulating pressure wheel (14) is connected to the U-shaped groove (13).

4. The non-standard length wire pay-off alarm device according to claim 1, characterized in that: The lapped structure (30) comprises a plurality of turns of a limiting coil (322) at the end of a front-stage steel wire (32) and a lead-out wire (311) at the front end of a rear-stage steel wire (31), wherein the plurality of turns of the limiting coil (322) are pressed on the outer layer of the lead-out wire (311).

5. The non-standard length wire pay-off alarm device according to claim 4, characterized in that: The lead wire (311) is arranged along the axial direction of the spool shaft (101), and the free end faces the side wall of the spool (100).

6. The non-standard length wire pay-off alarm device according to claim 4, characterized in that: A plurality of turns of the limiting coil (322) are sequentially wound around the outer wall of the lead wire (311) in a direction from the root of the lead wire (311) to the free end.

7. The non-standard length wire pay-off alarm device according to claim 4, characterized in that: The length of the lead wire (311) is greater than fifteen centimeters, and the number of turns of the limiting coil (322) is greater than three turns.

8. The non-standard length wire pay-out alarm device according to any one of claims 1 to 7, characterized in that: At least one section of the rear-stage steel wire (31) is wound around the surface of the I-shaped wheel shaft (101), and the length of the wire is less than two meters.

9. A method for paying out a steel wire of non-standard length, characterized in that: The wire-laying alarm device for a non-standard length steel wire using any one of claims 1 to 8 comprises the following steps: Step 1, placing an insulating pressure wheel (14) on the surface of the steel wire layer (102) of the I-shaped wheel; Step 2, using an unwinding device to drive the spool (100) to unwind the wire; Step 3, when the alarm (20) sounds, the unwinding device is used to drive the spool (100) to brake until the spool (100) stops rotating; Step 4, welding the end of the front-stage steel wire (32) and the front end of the rear-stage steel wire (31) together, and continuing to use the unwinding device to drive the I-shaped wheel (100) to unwind; Steps 3 and 4 are repeated until the thickness of the steel wire layer (102) on the surface of the I-shaped wheel (100) is less than the thickness of one layer of steel wire.

10. The method for paying out a non-standard length steel wire according to claim 9, characterized in that: In step 3, the braking speed of the spool (100) is set so that the end of the front-stage steel wire (32) and the front end of the rear-stage steel wire (31) are still in contact before the spool stops completely.

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