An automated device for preparing a wound core and a wound core process

Abstract

The present invention discloses an automated equipment for preparing a rolled core and a rolled core process, including a feeding mechanism; a notching machine, which is arranged at the discharge end of the feeding mechanism, and the notching machine includes a notching table and a high-pressure nozzle arranged above the notching table; and a winding mechanism, which is arranged at the discharge end of the notching machine. The rolled core process includes the following steps: S1: material strip feeding, placing the material strip reel on the feeding mechanism, the material strip is a silicon steel sheet material strip; S2: material strip surface notching, the material strip is conveyed from the feeding mechanism to the notching machine for surface notching, and the notching is a groove-shaped mark formed on the silicon steel sheet material strip, the grooves are parallel and the depth is controlled between 2μm and 50μm, and the width is controlled between 30μm and 200μm; S3: material strip winding, a core mold is arranged on the winding mechanism, and the head end of the material strip that has completed the surface notching is fixed on the core mold for automatic winding; wherein, S2 and S3 are performed simultaneously.

Description

Technical Field

[0001] The invention relates to the technical field of wound cores, and in particular to automated equipment for preparing wound cores and a wound core process. Background Art

[0002] As energy-saving requirements become increasingly stringent, three-dimensional wound core transformers are becoming more and more popular in the market. At the same time, various manufacturers are also paying more and more attention to their own product process innovation, reducing production management costs, and improving the market competitiveness of their products.

[0003] The core of the three-dimensional wound core transformer can be made of silicon steel material by continuous winding, which has the advantages of low no-load loss, low no-load current, low noise and low cost. According to the characteristics of silicon steel sheets, there is a magnetic domain structure in its internal grains. The magnetic domain of oriented silicon steel can be refined by scoring, that is, the width of the magnetic domain can be reduced, which can effectively reduce the eddy current loss of silicon steel sheets, thereby reducing the overall iron loss of oriented silicon steel. However, since the production process of heat-resistant scored silicon steel sheets is more complicated than that of conventional silicon steel sheets, the output is still relatively small.

[0004] If the production process of three-dimensional wound core is improved by combining this characteristic of silicon steel sheet and applying the notch of silicon steel sheet to the production of three-dimensional wound core, the performance of silicon steel sheet raw material can be further improved and the no-load loss of core can be reduced. Moreover, the process provided by this scheme is also applicable to the production of single-phase wound core. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the first aspect of the present invention provides an automated device for preparing a wound core, which can improve production efficiency and reduce the labor intensity of workers.

[0006] An automated device for preparing a wound core according to an embodiment of the present invention includes:

[0007] Feeding mechanism;

[0008] A notching machine is arranged at the discharge end of the feeding mechanism, and the notching machine comprises a notching table and a high-pressure nozzle arranged above the notching table;

[0009] The winding mechanism is arranged at the discharge end of the notching machine.

[0010] An automated device for preparing a wound core according to an embodiment of the present invention has at least the following beneficial effects: the silicon steel sheet is scored before winding to reduce the magnetic domain width, improve the loss performance of the silicon steel sheet material, and thus reduce the no-load loss of the core. In addition, the scoring of the silicon steel sheet is carried out simultaneously with the winding process, which does not affect the production efficiency of the product. Moreover, the scoring machine uses high-pressure liquid scoring, which has high precision and will not cause thermal deformation of the silicon steel sheet. The roughness is better than that of laser and other equipment. Moreover, after scoring, there is no raised area in the scoring area, and the formed grooves are uniform, so it does not affect the lamination coefficient.

[0011] According to an embodiment of the present invention, an automated equipment for preparing a rolled iron core, the scoring machine also includes a longitudinal moving device and a transverse moving device, the high-pressure nozzle is connected to the transverse moving device, and the longitudinal moving device is connected to the transverse moving device. The transverse moving device and the longitudinal moving device are arranged to adjust the position of the high-pressure nozzle to improve the accuracy of the scoring and ensure the accuracy of the scoring position.

[0012] According to an automated device for preparing a rolled iron core according to an embodiment of the present invention, the scoring machine also includes an air drying device, which is arranged downstream of the scoring table to dry the scored material strip to avoid corrosion of the material strip caused by winding the material strip in a wet state.

[0013] According to an automated device for preparing a wound core according to an embodiment of the present invention, the scoring machine further includes a drying device, which is arranged downstream of the scoring station to dry the material strip to ensure that the material strip is thoroughly dried.

[0014] According to an automated device for preparing a rolled iron core according to an embodiment of the present invention, a guide device is provided at both the feed end and the discharge end of the scoring machine. The guide device includes a bracket and a guide roller installed on the bracket. The two guide rollers are arranged up and down and reserve a gap for the material belt to pass through.

[0015] According to an automated device for preparing rolled cores according to an embodiment of the present invention, a positioning mechanism is provided at both the feed end and the discharge end of the notching machine. The positioning mechanism is provided on one side of the guide device, and the positioning mechanism consists of two guide columns rotatably mounted on the frame of the notching machine.

[0016] According to an automated device for preparing a wound core according to an embodiment of the present invention, a receiving groove is provided on the body of the guide column, and the edge of the material strip is movably connected to the receiving groove.

[0017] According to an automated device for preparing a wound core according to an embodiment of the present invention, a tension device is provided between the notching machine and the winding mechanism, and the tension device includes a machine platform, a downward pressure drive installed on the machine platform, and a flattening plate connected to the driving end of the downward pressure drive.

[0018] According to an automated device for preparing a wound core according to an embodiment of the present invention, both the feed end and the discharge end of the tension device are provided with a guide device.

[0019] The second aspect of the invention provides a wound core process, which uses the above-mentioned automated equipment for preparing a wound core, and includes the following steps:

[0020] S1: Loading the material strip. Place the material strip reel on the loading mechanism. The loading mechanism is used for automatic speed-limited loading of the material strip. The material strip is a silicon steel sheet material strip.

[0021] S2: The material strip is conveyed from the feeding mechanism to the notching machine for surface notching. The notches are groove-shaped marks formed on the silicon steel sheet material strip. The grooves are parallel to each other. The groove depth is controlled between 2μm and 50μm, and the groove width is controlled between 30μm and 200μm.

[0022] S3: Strip winding: the strip with surface notches is output from the notching machine and enters the winding mechanism for a winding process. The winding mechanism is provided with a core mold, and the head end of the strip with surface notches is fixed on the core mold for automatic winding;

[0023] Among them, S2 and S3 are carried out simultaneously.

[0024] A core winding process according to an embodiment of the present invention has at least the following beneficial effects: the silicon steel sheet is scored before winding to reduce the width of the magnetic domain, improve the loss performance of the silicon steel sheet material, and thus reduce the no-load loss of the core. In addition, the scoring of the silicon steel sheet is carried out simultaneously with the winding process, which does not affect the production efficiency of the product. In addition, the scoring machine uses high-pressure liquid scoring, which has high precision and will not cause thermal deformation of the silicon steel sheet. The roughness is better than that of laser and other equipment. Moreover, after scoring, there is no raised area in the scoring area, and the formed grooves are uniform, so it does not affect the lamination coefficient.

[0025] It should be noted that the process provided by this solution is also applicable to the production of single-phase wound cores.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 It is a structural schematic diagram of an automated device for preparing a wound core;

[0029] Figure 2 It is a structural diagram of the notching machine.

[0030] Description of reference numerals:

[0031] Feeding mechanism 1;

[0032] Scoring machine 2; scoring table 2-1; high-pressure nozzle 2-2; lateral moving device 2-3; longitudinal moving device 2-4; air drying device 2-5; drying device 2-6; external protection 2-7; visual window 2-8;

[0033] Winding mechanism 3;

[0034] Guide device 4; bracket 4-1; guide roller 4-2;

[0035] Guide column 5; Accommodating groove 5-1;

[0036] Tension device 6; machine platform 6-1; downward pressing drive 6-2; flattening plate 6-3. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the description of the invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of the first or the second, it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0040] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0041] Reference Figure 1 and Figure 2An embodiment of the present invention provides an automated device for preparing a rolled iron core, comprising a feeding mechanism 1; a scoring machine 2, arranged at the discharge end of the feeding mechanism 1, the scoring machine 2 comprising a scoring table 2-1, and a high-pressure nozzle 2-2 arranged above the scoring table 2-1; a winding mechanism 3, arranged at the discharge end of the scoring machine 2.

[0042] The silicon steel sheet is scored before winding to reduce the width of the magnetic domain and improve the loss performance of the silicon steel sheet material, thereby reducing the no-load loss of the core. In addition, the scoring of the silicon steel sheet is carried out simultaneously with the winding process, which does not affect the production efficiency of the product. In addition, the scoring machine 2 uses high-pressure liquid scoring, which has high precision and will not cause thermal deformation of the silicon steel sheet. The roughness is better than that of laser and other equipment. In addition, after scoring, there is no convex area in the scoring area, and the grooves formed are uniform, so it does not affect the lamination coefficient.

[0043] According to some embodiments of the present application, the notching machine 2 also includes a longitudinal moving device 2-4 and a transverse moving device 2-3, the high-pressure nozzle 2-2 is connected to the transverse moving device 2-3, and the longitudinal moving device 2-4 is connected to the transverse moving device 2-3. The transverse moving device 2-3 and the longitudinal moving device 2-4 are arranged to adjust the position of the high-pressure nozzle 2-2 to improve the accuracy of the high-pressure notching and ensure the accuracy of the notching position.

[0044] Furthermore, the notching machine 2 is also provided with a detector (not shown) for monitoring the pressure of the high-pressure nozzle 2-2, wherein the detector (not shown) is connected to the control box of the notching machine 2 to adjust the pressure of the high-pressure nozzle 2-2 to ensure the accuracy and quality of notching.

[0045] Furthermore, the notching machine 2 is also provided with a circulation filter box (not shown) connected to the high-pressure nozzle 2-2, which can recover and filter the liquid sprayed from the high-pressure nozzle 2-2 to meet environmental protection requirements.

[0046] Furthermore, the notching machine 2 also includes an outer protection 2-7, wherein the outer protection 2-7 is provided with a visual window 2-8 to facilitate workers to detect the notching condition.

[0047] According to some embodiments of the present application, the scoring machine 2 also includes an air drying device 2-5, which is arranged downstream of the scoring table 2-1 to dry the scored material strip to avoid corrosion of the material strip caused by winding the material strip in a wet state.

[0048] According to some embodiments of the present application, the scoring machine 2 also includes a drying device 2-6, which is arranged downstream of the scoring table 2-1. Specifically, the drying device 2-6 in the present application is arranged downstream of the air-drying device 2-5 to further dry the material strip to ensure that the material strip is thoroughly dried.

[0049] According to some embodiments of the present application, a guide device 4 is provided at both the feed end and the discharge end of the notching machine 2. The guide device 4 includes a bracket 4-1 and a guide roller 4-2 installed on the bracket 4-1. The two guide rollers 4-2 are arranged up and down and reserve a gap for the material belt to pass through.

[0050] According to some embodiments of the present application, a positioning mechanism is provided at both the feed end and the discharge end of the notching machine 2. The positioning mechanism is arranged on one side of the guide device 4. The positioning mechanism is composed of two guide columns 5 rotatably mounted on the frame of the notching machine 2 to prevent the material strip from shifting during transmission, thereby ensuring the quality and accuracy of the notching of the material strip.

[0051] According to some embodiments of the present application, a receiving groove 5 - 1 is provided on the body of the guide column 5 , and the edge of the material strip is movably connected to the receiving groove 5 - 1 .

[0052] According to some embodiments of the present application, a tension device 6 is provided between the notching machine 2 and the winding mechanism 3, and the tension device 6 includes a machine table 6-1, a downward drive 6-2 installed on the machine table 6-1, and a flattening plate 6-3 connected to the driving end of the downward drive 6-2. The tension device 6 is utilized to increase the tension of the material strip before it enters the winding mechanism 3 to ensure the winding quality of the core. At the same time, the tension device 6 is provided with a flattening plate 6-3 to flatten the material strip, thereby further ensuring the quality of the wound core.

[0053] According to some embodiments of the present application, both the feed end and the discharge end of the tension device 6 are provided with a guide device 4 .

[0054] The present application also provides a core winding process, which uses the above-mentioned core winding automation equipment, including the following steps:

[0055] S1: Loading the material strip, placing the material strip reel on the loading mechanism 1, the loading mechanism 1 is used for automatic speed-limited loading of the material strip, the material strip is a silicon steel sheet material strip;

[0056] S2: The material strip is conveyed from the feeding mechanism 1 to the notching machine 2 for surface notching. The notches are groove-shaped marks formed on the silicon steel sheet material strip. The grooves are parallel to each other. The groove depth is controlled between 2μm and 50μm, and the groove width is controlled between 30μm and 200μm.

[0057] S3: Strip winding: the strip with surface notches completed is output from the notching machine 2 and enters the winding mechanism 3 for a winding process. The winding mechanism 3 is provided with a core mold, and the head end of the strip with surface notches completed is fixed on the core mold for automatic winding;

[0058] Among them, S2 and S3 are carried out simultaneously.

[0059] The silicon steel sheet is scored before winding to reduce the width of the magnetic domain and improve the loss performance of the silicon steel sheet material, thereby reducing the no-load loss of the core. In addition, the scoring of the silicon steel sheet is carried out simultaneously with the winding process, which does not affect the production efficiency of the product. In addition, the scoring machine 2 uses high-pressure liquid scoring, which has high precision and will not cause thermal deformation of the silicon steel sheet. The roughness is better than that of laser and other equipment. In addition, after scoring, there is no convex area in the scoring area, and the grooves formed are uniform, so it does not affect the lamination coefficient.

[0060] It should be noted that the process provided by this solution is also applicable to the production of single-phase wound cores.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0062] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A wound core process, characterized in that: An automated device for preparing a rolled iron core is utilized, the automated device comprising a feeding mechanism; a notching machine, which is arranged at the discharge end of the feeding mechanism, the notching machine comprising a notching table, a high-pressure nozzle arranged above the notching table, an air drying device, a drying device, a longitudinal moving device and a transverse moving device, the high-pressure nozzle is connected to the transverse moving device, the longitudinal moving device is connected to the transverse moving device, the air drying device and the drying device are arranged downstream of the notching table, the feeding end and the discharge end of the notching machine are both provided with a guide device, the guide device comprises a bracket and a guide roller installed on the bracket, and the two guide rollers are arranged up and down and reserved for feeding belts The gap passed through, the feeding end and the discharging end of the notching machine are both provided with a positioning mechanism, the positioning mechanism is arranged on one side of the guide device, the positioning mechanism is composed of two guide columns rotatably mounted on the frame of the notching machine, the column body of the guide column is provided with a receiving groove, and the edge of the material strip is movably connected with the receiving groove; a winding mechanism is arranged at the discharging end of the notching machine; a tension device is arranged between the notching machine and the winding mechanism, the tension device includes a machine table, a downward pressure drive installed on the machine table and a flattening plate connected to the driving end of the downward pressure drive, and the feeding end and the discharging end of the tension device are both provided with a guide device; the core winding process comprises the following steps: S1: Loading the material strip, placing the material strip reel on the loading mechanism, the loading mechanism is used for automatic speed-limited loading of the material strip, the material strip is a silicon steel sheet material strip; S2: The material strip is scored on the surface. The material strip is conveyed from the feeding mechanism to the scoring machine for surface scoring. The scoring is a groove-shaped mark formed on the silicon steel sheet material strip. The grooves are parallel to each other. The groove depth is controlled between 2μm and 50μm, and the groove width is controlled between 30μm and 200μm. S3: strip winding, the strip with surface notches completed is output from the notching machine and enters the winding mechanism for a winding process, the winding mechanism is provided with a core mold, and the head end of the strip with surface notches completed is fixed on the core mold for automatic winding; Among them, S2 and S3 are carried out simultaneously.

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