A device and method for measuring the distribution density of steel wires of rubberized steel cord

Abstract

The application relates to the technical field of tire production, and provides a rubber-coated steel cord steel wire distribution density measuring device and method, which comprises a short-circuit counter, a power supply and a probe, the short-circuit counter, the power supply and the probe are connected in series with each other, the probe is a group of positive and negative electrode detection components connected with the positive and negative electrodes of the power supply, the probe is used for connecting two ends of a steel wire in a steel cord to form a circuit loop, and feeding back a signal to the counter, the positive and negative electrode detection components are a negative electrode probe and a positive electrode plate, and the negative electrode probe and the positive electrode plate are connected at two ends of the steel wire in the steel cord to form a circuit loop. When the application is tested, one side is fixed on the steel wire, the measuring electrode is kept in close contact with the steel wire, the probe is slid on the other side of the device, and the specific value can be directly seen on the indicating meter, the operation is simple, the accuracy is high, and the number of steel wire strands in every 10 cm in the steel cord after calendering can be accurately obtained.

Description

Technical Field

[0001] The present invention belongs to the technical field of tire production, and relates to a device and method for measuring the steel wire distribution density of a rubber-coated steel cord, and in particular to a new method for testing the EPD of steel wires after calendering. Background Art

[0002] The steel wire calendering process is a key core process in the tire production process. The quality control of the calendered large coil is directly related to the comprehensive performance of the finished tire. As an important means of ensuring strength, the steel wire distribution density on the cross-section of the calendered steel cord is an important technical indicator that must be measured.

[0003] Existing technical solutions generally rely on manual inspection. After taking a steel cord sample, the 10cm width is measured and then manually counted visually. More advanced ones use optical recognition of the cord concave and convex, and through background calculation, find the cord position and calculate the total number.

[0004] In existing technical solutions, manual counting operations are complex, inefficient and prone to errors, while optical recognition equipment is expensive. In addition, the thickness of the calendered rubber coating of the cord directly affects the measurement accuracy. The test data is too sensitive to the surface condition of the calendered product, and the test results fluctuate greatly. Summary of the Invention

[0005] In order to solve the technical problems existing in the above-mentioned prior art, the main purpose of the present invention is to provide a device and method for measuring the steel wire distribution density of rubber-coated steel cord, so as to solve the cumbersome problem of EPD measurement in the later technical parameter verification of steel wire calendering cord, and realize efficient and accurate EPD measurement of steel cord at a lower cost.

[0006] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0007] In the first aspect, the present invention provides a device for measuring the distribution density of steel wires in a rubber-coated steel cord, comprising a short-circuit counter, a power supply and a probe, wherein the short-circuit counter, the power supply and the probe are connected in series, and the probe is a group of positive and negative pole detection components interconnected with the positive and negative poles of the power supply, and the probe is used to connect to the two ends of the steel wire in the steel cord to form a circuit loop and feed back the signal to the counter.

[0008] As a further solution of the present invention, the short-circuit counter is connected to at least one set of probes via wires, and the probes are positive and negative pole detection components connected to the short-circuit counter.

[0009] As a further solution of the present invention, the probe is a positive and negative pole detection component connected to the short-circuit counter, and the power supply is connected in series to the circuit connecting the short-circuit counter and the probe.

[0010] As a further solution of the present invention, the positive and negative electrode detection components are a negative electrode probe and a positive electrode plate, and the negative electrode probe and the positive electrode plate are respectively connected to the two ends of the steel wire in the steel cord to form a circuit loop.

[0011] As a further solution of the present invention, the positive electrode plate is fixed at a cross-section position at one end of the steel cord and is connected to the steel wires in the steel cord.

[0012] As a further solution of the present invention, the negative electrode probe is movably connected to both ends of the steel wire in the steel cord, and the moving distance of the negative electrode probe is limited to 10 cm.

[0013] As a further solution of the present invention, when the negative electrode probe moves within the movement distance limit, the number of times the circuit loop forms a short circuit is equal to the number of steel wires in the cord.

[0014] As a further solution of the present invention, the rubber-coated steel cord wire distribution density measuring device also includes a slide, which is connected to the short-circuit counter, and is provided with a slide groove with a length equal to the moving distance limit. The negative pole probe is set in the slide groove of the slide and slides left and right. The negative pole probe in the slide groove is against the rubber-coated steel cord wire. When the negative pole probe slides along the slide groove, the number of short circuits is counted and determined as the number of steel wires in the cord.

[0015] In a second aspect, the present invention provides a method for measuring the steel wire distribution density of a rubber-coated steel cord, comprising the following steps:

[0016] Step 1: Take the steel cord

[0017] Take a steel cord with a width greater than the limit of the moving distance and a length greater than the measuring range between the negative electrode probe and the positive plate of the steel wire distribution density measuring device of the rubber-coated steel cord;

[0018] Step 2: Fix the electrodes

[0019] Process the sampling cord so that the positive plate is in close contact with all the steel wires in the measurement position; at the same time, process the contact position on the negative probe side so that the steel wires in the rubber-coated steel cord are exposed to ensure the contact between the negative probe and the steel wires;

[0020] Step 3: Wire distribution measurement

[0021] After the negative probes on both sides of the short-circuit counter are in contact with the positive plates, slide the negative probes and read the readings. At this point, the accurate number of steel wire strands per 10 cm in the steel cord after calendering is obtained.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention provides a device and method for measuring the steel wire distribution density of a rubber-coated steel cord. The measuring device has a simple structure. During testing, only one side needs to be fixed on the steel wire to keep the measuring electrode in close contact with the steel wire. A probe is slid on the other side of the device to directly view the specific value on the display meter. The device is easy to operate and has high accuracy. The number of steel wire strands per 10 cm in the rolled steel cord can be accurately obtained.

[0024] These and other aspects of the present invention will become more readily apparent in the following description of the embodiments. It should be understood that the above general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. In the drawings:

[0026] Figure 1 Schematic diagram of the principle of a device for measuring the steel wire distribution density of a rubber-coated steel cord according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic structural diagram of a device for measuring the steel wire distribution density of a rubber-coated steel cord according to an embodiment of the present invention;

[0028] Reference numerals in the figure: 1-short circuit counter, 2-power supply, 3-probe, 31-negative electrode probe, 32-positive electrode plate, 4-steel wire, 5-slide.

[0029] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0030] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0031] In the description of the present invention, “several” means one or more, “more” means more than two, “greater than”, “less than”, “exceed”, etc. are understood as excluding the number itself, and “above”, “below”, “within”, etc. are understood as including the number itself.

[0032] In the description of the present invention, the consecutive numbering of the method steps is for the convenience of review and understanding. Combined with the overall technical solution of the present invention and the logical relationship between the various steps, adjusting the implementation order between the steps will not affect the technical effect achieved by the technical solution of the present invention.

[0033] In the description of the present invention, unless otherwise clearly defined, words such as “setting” should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0034] Existing technical solutions generally rely on manual inspection, where steel cord samples are taken, a 10cm width is measured, and then counted visually. More advanced methods use optical recognition of the cord's convexity and concavity, which, through back-end calculations, locates the cord position and calculates the total number. Manual counting is complex, inefficient, and prone to errors, while optical recognition equipment is expensive. Furthermore, the thickness of the cord's calendered rubber coating directly affects measurement accuracy, and test data is overly sensitive to the surface condition of the calendered product, resulting in significant fluctuations in test results.

[0035] Therefore, the embodiments of the present invention provide a device and method for measuring the steel wire distribution density of a rubber-coated steel cord to solve the cumbersome problem of EPD measurement in the later technical parameter verification of the steel wire 4 calendered cord, and to achieve efficient and accurate EPD measurement of the steel cord at a lower cost.

[0036] See also Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a device for measuring the distribution density of steel wires in a rubber-coated steel cord, comprising a short-circuit counter 1, a power supply 2, and a probe 3. The short-circuit counter 1, the power supply 2, and the probe 3 are connected in series, and the probe 3 is a group of positive and negative pole detection components interconnected with the positive and negative poles of the power supply 2. The probe 3 is used to connect to both ends of the steel wire 4 in the steel cord to form a circuit loop and feed back the signal to the counter.

[0037] In the embodiment of the present invention, the short-circuit counter 1 is connected to at least one set of probes 3 via wires, and the probes 3 are positive and negative pole detection components connected to the short-circuit counter 1 .

[0038] In the embodiment of the present invention, the probe 3 is a positive and negative pole detection component connected to the short-circuit counter 1 , and the power supply 2 is connected in series to the circuit connecting the short-circuit counter 1 and the probe 3 .

[0039] In the embodiment of the present invention, the positive and negative pole detection components are a negative pole probe 31 and a positive pole plate 32 , and the negative pole probe 31 and the positive pole plate 32 are respectively connected to the two ends of the steel wire 4 in the steel cord to form a circuit loop.

[0040] In the embodiment of the present invention, the positive electrode plate 32 is fixed at a cross-section position at one end of the steel cord and is connected to the steel wires 4 in the steel cord.

[0041] In the embodiment of the present invention, the negative electrode probe 31 is movably connected to both ends of the steel wire 4 in the steel cord, and the moving distance of the negative electrode probe 31 is limited to 10 cm.

[0042] In the embodiment of the present invention, when the negative electrode probe 31 moves within the movement distance limit, the number of times the circuit loop forms a short circuit is equal to the number of steel wires 4 in the cord.

[0043] In an embodiment of the present invention, the rubber-coated steel cord wire distribution density measuring device also includes a slide 5, which is connected to the short-circuit counter 1. The slide 5 is provided with a slide groove equal to the moving distance limit length. The negative pole probe 31 is set in the slide groove of the slide 5 for sliding left and right. The negative pole probe 31 in the slide groove is against the rubber-coated steel cord wire 4. When the negative pole probe 31 slides along the slide groove, the number of short circuits is counted and determined as the number of steel wires 4 in the cord.

[0044] Therefore, the principle of the steel wire distribution density measuring device of the rubber-coated steel cord provided by an embodiment of the present invention is to form a circuit loop through the steel wire 4 in the steel cord, and feed back the signal to the short-circuit counter 1. By moving the probe 3 left and right, the moving distance is limited to 10 cm, and the switching between short circuit and passage is realized. The number of short circuits after moving 10 cm is the number of steel wires 4 in the cord.

[0045] In one embodiment of the present invention, a method for measuring the steel wire distribution density of a rubber-coated steel cord is provided, comprising the following steps:

[0046] Step 1: Take the steel cord

[0047] Take a steel cord with a width greater than the moving distance limit and a length greater than the measuring range between the negative electrode probe 31 and the positive electrode plate 32 of the rubber-coated steel cord wire distribution density measuring device;

[0048] Step 2: Fix the electrodes

[0049] The sampling cord is processed so that the positive plate 32 is in close contact with all the steel wires 4 in the position to be measured; at the same time, the contact position on one side of the negative probe 31 is processed so that the steel wires 4 in the rubber-coated steel cord are exposed to ensure contact between the negative probe 31 and the steel wires 4;

[0050] Step 3: Wire 4 distribution measurement

[0051] After the negative probe 31 and the positive plate 32 on both sides of the short-circuit counter 1 are in contact, the negative probe 31 is slid and the reading is taken. Thus, the number of 4 steel wire strands per 10 cm in the steel cord after calendering is accurately obtained.

[0052] The present invention provides a device and method for measuring the steel wire distribution density of a rubber-coated steel cord. The measuring device has a simple structure. During testing, only one side needs to be fixed on a steel wire 4, and a measuring electrode needs to be kept in close contact with the steel wire 4. A probe 3 is slid on the other side of the device, and a specific value can be directly viewed on a display meter. The device is easy to operate and highly accurate, and can accurately obtain the number of steel wire strands per 10 cm in the rolled steel cord.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for measuring the steel wire distribution density of a rubber-coated steel cord, characterized in that: The invention comprises a short circuit counter (1), a power supply (2) and a probe (3), wherein the short circuit counter (1), the power supply (2) and the probe (3) are connected in series, and the probe (3) is a group of positive and negative pole detection components connected to the positive and negative poles of the power supply (2), and the probe (3) is used to be connected to the two ends of the steel wire (4) in the steel cord to form a circuit loop and feed back a signal to the counter; the positive and negative pole detection components are a negative pole probe (31) and a positive pole plate (32), and the negative pole probe (31) and the positive pole plate (32) are respectively connected to the two ends of the steel wire (4) in the steel cord to form a circuit loop; when the negative pole probe (31) moves within a movement distance limit, the number of short circuits formed in the circuit loop is the number of steel wires (4) in the cord; the negative pole probe (31) is movably connected to the two ends of the steel wire (4) in the steel cord, and the movement distance limit of the negative pole probe (31) is 10 cm.

2. The device for measuring the steel wire distribution density of rubber-coated steel cord according to claim 1, characterized in that: The short-circuit counter (1) is connected to at least one set of probes (3) via a wire, and the probes (3) are positive and negative pole detection components connected to the short-circuit counter (1).

3. The device for measuring the steel wire distribution density of rubber-coated steel cord according to claim 2, characterized in that: The probe (3) is a positive and negative pole detection component connected to the short-circuit counter (1), and the power supply (2) is connected in series to the circuit connecting the short-circuit counter (1) and the probe (3).

4. The device for measuring the steel wire distribution density of rubber-coated steel cord according to claim 3, characterized in that: The positive electrode plate (32) is fixed at a cross-section position at one end of the steel cord and is connected to the steel wire (4) inside the steel cord.

5. The device for measuring the steel wire distribution density of rubber-coated steel cord according to claim 4, characterized in that: The rubber-coated steel cord wire distribution density measuring device further comprises a slideway (5), the slideway (5) being connected to the short-circuit counter (1), and the slideway (5) being provided with a slide groove having a length equal to the moving distance limit.

6. The device for measuring the steel wire distribution density of rubber-coated steel cord according to claim 5, characterized in that: The negative electrode probe (31) is arranged in a slide groove of the slideway (5) so as to slide left and right. The negative electrode probe (31) in the slide groove abuts against the steel wires (4) of the rubber-coated steel cord. When the negative electrode probe (31) slides along the slide groove, the number of short circuits is counted and determined as the number of steel wires (4) in the cord.

7. A method for measuring the steel wire distribution density of a rubber-coated steel cord, characterized in that: The following steps are involved: Step 1: Take the steel cord A steel cord with a width greater than the moving distance limit and a length greater than the measuring range between the negative electrode probe (31) and the positive electrode plate (32) of the rubber-coated steel cord wire distribution density measuring device is used; Step 2: Fix the electrodes The sampling cord is processed so that the positive plate (32) is in close contact with all the steel wires (4) in the position to be measured; at the same time, the contact position on one side of the negative probe (31) is processed so that the steel wires (4) in the rubber-coated steel cord are exposed to ensure contact between the negative probe (31) and the steel wires (4); Step 3: Steel wire (4) distribution measurement After the negative electrode probe (31) and the positive electrode plate (32) on both sides of the short circuit counter (1) are in contact, the negative electrode probe (31) is slid and the reading is taken, thereby obtaining the accurate number of steel wires (4) per 10 cm in the steel cord after calendering.

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