A magnetic shielding component shaping tool, preparation device and processing method

Abstract

The present invention discloses a magnetic shielding component shaping tool, a preparation device and a processing method. The magnetic shielding component shaping tool includes a base plate, a first shaping piece, a second shaping piece, a first tightening device and a second tightening device. The first shaping piece can be reciprocated and arranged on the base plate, the first shaping piece is connected to the output end of the first tightening device, and the first tightening device is used to drive the first shaping piece to reciprocate relative to the base plate; the second shaping piece can be reciprocated and arranged on the base plate and the second shaping piece conforms to the shape of the first shaping piece, the second shaping piece is connected to the output end of the second tightening device, and the second tightening device is used to drive the second shaping piece to reciprocate relative to the base plate, and the first shaping piece and the second shaping piece cooperate with each other to clamp and shape each silicon steel sheet constituting the magnetic shielding component; through the above-mentioned shaping tool, the processing and shaping of the silicon steel sheets of the arc-shaped magnetic shielding component can be achieved, the efficiency is high, and the consistency of the shaping of the silicon steel sheets can be ensured, thereby meeting the design requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power equipment, and in particular to a magnetic shielding component shaping tool, a preparation device and a processing method. Background Art

[0002] With the mass production of various types of products, in order to adapt to the various changes in transformer products that keep pace with the times, the magnetic shielding of some transformers must also be changed, such as Figure 1 As shown in the figure, some of our company's fuel tanks 1 generally use plate-type magnetic shielding or copper-magnetic composite shielding structures. However, it is difficult to lay the plate-type magnetic shielding component 3 near the middle outlet device 2. Most of them are laid in two sections, the upper and lower sections are disconnected. This structure easily causes excessive concentration of leakage magnetic flux near the outlet device, which in turn causes local overheating. To improve the current situation, through computational simulation research, a new type of arc-shaped magnetic shielding component was designed, such as Figure 2 and Figure 3 As shown, this arc-shaped magnetic shielding component 4 can meet the placement of the high-voltage arc in the middle of the transformer oil tank, changing the previous magnetic shielding method of disconnecting the upper and lower sections, so that the magnetic shielding structure near the outgoing line device can form a whole, thereby reducing stray losses, avoiding local overheating, and improving transformer performance. In order to manufacture the arc-shaped magnetic shielding component, it is urgent to design a magnetic shielding component processing equipment to process and shape the silicon steel sheet to ensure that the produced magnetic shielding components have good consistency and meet the design requirements. Summary of the Invention

[0003] In view of this, the first object of the present invention is to provide a magnetic shielding component shaping tool to process silicon steel sheets into shapes, thereby ensuring the consistency of the magnetic shielding component and making it meet design requirements.

[0004] A second object of the present invention is to provide a magnetic shielding component manufacturing device and a magnetic shielding component processing method using the above-mentioned magnetic shielding component shaping tool.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A magnetic shielding component shaping tool, comprising:

[0007] base plate;

[0008] a first shaping member, the first shaping member being reciprocally movably disposed on the bottom plate, the first shaping member being connected to an output end of a first pressing device, the first pressing device being used to drive the first shaping member to reciprocate relative to the bottom plate;

[0009] The second forming member is reciprocatingly arranged on the base plate and the second forming member has the same shape as the first forming member. The second forming member is connected to the output end of the second tightening device. The second tightening device is used to drive the second forming member to reciprocate relative to the base plate. The first forming member and the second forming member cooperate with each other to clamp and shape multiple silicon steel sheets that constitute the magnetic shielding component.

[0010] Optionally, the first tightening device includes a first support plate, a first push rod, and a first tightening structure, wherein the first support plate is provided on the bottom plate, a plurality of first push rods are reciprocatingly slidably provided on the first support plate, one end of each first push rod is in contact with and engaged with the first shaped member, and the first tightening structure is provided between the first support plate and the first push rod or between the first push rod and the bottom plate so that the first push rod presses the first shaped member;

[0011] The second tightening device includes a second supporting plate, a second pushing rod and a second tightening structure. The second supporting plate is arranged on the bottom plate. A plurality of second pushing rods are reciprocatingly slidably arranged on the second supporting plate. One end of each second pushing rod is in contact with and cooperates with the second shaping member. The second tightening structure is arranged between the second supporting plate and the second pushing rod or between the second pushing rod and the bottom plate so that the second pushing rod can tighten the second shaping member.

[0012] Optionally, the first tightening structure includes an external thread provided on the first push rod and a first threaded hole provided on the first support plate, and the first push rod is threadedly engaged with the first threaded hole through the external thread;

[0013] The second tightening structure includes an external thread provided on the second push rod and a second threaded hole provided on the second support plate, and the second push rod is threadedly engaged with the second threaded hole through the external thread.

[0014] Optionally, a first operating portion is provided at one end of the first push rod away from the first shaping member, and a second operating portion is provided at one end of the second push rod away from the second shaping member.

[0015] Optionally, the first operating part and the second operating part are both hexagonal nuts.

[0016] Optionally, the first shaping member and the second shaping member include an arc-shaped shaping portion and straight-line shaping portions provided at both ends of the arc-shaped shaping portion.

[0017] A magnetic shielding component manufacturing device, comprising:

[0018] A magnetic shielding component shaping tool, wherein the magnetic shielding component shaping tool is any one of the magnetic shielding component shaping tool described above;

[0019] A baffle is cooperated with the adjacent ends of the first forming piece and the second forming piece of the magnetic shielding component forming tooling. The bottom plate of the magnetic shielding component forming tooling, the first forming piece, the second forming piece and the two baffles cooperate to form a casting trough for accommodating multiple silicon steel sheets of the magnetic shielding component.

[0020] Optionally, a vacuum pumping device is further included, wherein the vacuum pumping device has a cavity for accommodating the magnetic shielding component forming tool and the baffle.

[0021] A method for processing a magnetic shielding component based on the above-mentioned magnetic shielding component manufacturing device comprises the following steps:

[0022] (1) stacking silicon steel sheets cut to a preset size neatly and placing them between a first shaping piece and a second shaping piece of a magnetic shielding component shaping tool of the magnetic shielding component manufacturing device;

[0023] (2) operating the first tightening device and the second tightening device of the magnetic shielding component shaping tooling to cause the first shaping member and the second shaping member to squeeze the silicon steel sheets until the shapes of the silicon steel sheets are consistent with the shapes of the first shaping member and the second shaping member;

[0024] (3) placing baffles at both ends of the first shaping member and the second shaping member to form a casting trough, and filling sealant between the first shaping member and the bottom plate of the magnetic shielding component shaping fixture, between the second shaping member and the bottom plate of the magnetic shielding component shaping fixture, between the baffle and the bottom plate of the magnetic shielding component shaping fixture, between the baffle and the first shaping member, and between the baffle and the second shaping member for sealing;

[0025] (4) pouring epoxy resin into the casting trough, and demoulding and cleaning after the epoxy resin is solidified to obtain a magnetic shielding component.

[0026] Optionally, the step (4) is specifically as follows: after pouring epoxy resin into the casting trough, the magnetic shielding component forming tooling is sent into a vacuum device for vacuuming for a preset time and then taken out, and after the epoxy resin is solidified, the mold is demoulded and cleaned to obtain the magnetic shielding component.

[0027] It can be seen from the above technical solution that an embodiment of the present invention provides a magnetic shielding component shaping tooling, which includes a base plate, a first shaping piece, a second shaping piece, a first tightening device and a second tightening device. The first shaping piece can be reciprocated and arranged on the base plate, and the first shaping piece is connected to the output end of the first tightening device. The first tightening device is used to drive the first shaping piece to reciprocate relative to the base plate; the second shaping piece can be reciprocated and arranged on the base plate and the second shaping piece conforms to the shape of the first shaping piece, the second shaping piece is connected to the output end of the second tightening device, and the second tightening device is used to drive the second shaping piece to reciprocate relative to the base plate. The first shaping piece and the second shaping piece cooperate with each other to clamp and shape multiple silicon steel sheets that constitute the magnetic shielding component. The above-mentioned first tightening device and the second shaping piece The two tightening devices can be manual tightening devices, that is, they need to be manually operated by an operator, or they can be automatic tightening devices, that is, automatic tightening can be achieved through a motor, a piston cylinder, etc. When in use, the silicon steel sheets cut to a preset size are stacked neatly and placed between the above-mentioned first forming member and the second forming member, and then the first tightening device and the second tightening device are operated to bring the first forming member and the second forming member closer to each other to clamp the silicon steel sheet. When the silicon steel sheet matches the shape of the first forming member and the second forming member, it means that the first forming member and the second forming member are clamped in place, and the next step of operation can be carried out. The above-mentioned magnetic shielding component shaping tooling can realize the processing and shaping of the silicon steel sheet of the arc-shaped magnetic shielding component, which is efficient and can ensure the consistency of the shaping of the silicon steel sheet, thereby meeting the design requirements.

[0028] An embodiment of the present invention also provides a magnetic shielding component preparation device and a magnetic shielding component processing method. Both the magnetic shielding component preparation device and the magnetic shielding component processing method adopt the above-mentioned magnetic shielding component forming tooling. Since the above-mentioned magnetic shielding component forming tooling is adopted, the magnetic shielding component preparation device and the magnetic shielding component processing method should have the same beneficial effects as the above-mentioned magnetic shielding component forming tooling, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 It is a structural schematic diagram of a magnetic shielding structure in an oil tank of a power transformer in the prior art;

[0031] Figure 2 Schematic diagram of the structure of the arc-shaped magnetic shielding component;

[0032] Figure 3 is a front view of an arc-shaped magnetic shielding member;

[0033] Figure 4 Schematic diagram of the structure of the magnetic shielding component shaping tool disclosed in an embodiment of the present invention before shaping;

[0034] Figure 5 It is a schematic structural diagram of the magnetic shielding component after the shaping tooling is finalized according to an embodiment of the present invention;

[0035] Figure 6 Schematic diagram of the structure of a magnetic shielding component manufacturing device disclosed in an embodiment of the present invention.

[0036] In the figure, 1 is the oil tank; 2 is the outlet device; 3 is the plate-type magnetic shielding component; 4 is the arc-shaped magnetic shielding component; 401 is the silicon steel sheet; 5 is the bottom plate; 6 is the first shaping member; 7 is the first supporting plate; 8 is the first push rod; 9 is the second shaping member; 10 is the second supporting plate; 11 is the second push rod; 12 is the baffle. DETAILED DESCRIPTION

[0037] The invention discloses a magnetic shielding component shaping tool, which can process silicon steel sheets into shapes and ensure the consistency of the magnetic shielding component to meet design requirements.

[0038] The present invention also discloses a magnetic shielding component preparation device of the magnetic shielding component shaping tool and a magnetic shielding component processing method.

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] like Figure 4 and Figure 5 As shown, Figure 4 Schematic diagram of the structure of the magnetic shielding component forming tool disclosed in an embodiment of the present invention before being finalized. Figure 5 It is a schematic structural diagram of the magnetic shielding component after the shaping tooling disclosed in the embodiment of the present invention is finalized.

[0041] An embodiment of the present invention discloses a magnetic shielding component shaping tool, which includes a base plate 5, a first shaping member 6, a second shaping member 9, a first tightening device, and a second tightening device.

[0042] Among them, the first forming member 6 can be reciprocatingly arranged on the base plate 5, the first forming member 6 is connected to the output end of the first tightening device, and the first tightening device is used to drive the first forming member 6 to reciprocate relative to the base plate 5; the second forming member 9 can be reciprocatingly arranged on the base plate 5 and the second forming member 9 is consistent with the shape of the first forming member 6, the second forming member 9 is connected to the output end of the second tightening device, and the second tightening device is used to drive the second forming member 9 to reciprocate relative to the base plate 5, the first forming member 6 and the second forming member 9 cooperate with each other to clamp and shape the multiple silicon steel sheets constituting the magnetic shielding component. The above-mentioned first tightening device and the second tightening device can be manual tightening devices, that is, they require manual operation by the operator, or they can be automatic tightening devices, that is, automatic tightening can be achieved by a motor, a piston cylinder, etc.

[0043] Compared with the prior art, the magnetic shielding component shaping tooling provided in the embodiment of the present invention stacks the silicon steel sheets cut to a preset size neatly and places them between the above-mentioned first shaping piece 6 and the second shaping piece 9 when in use, and then operates the first tightening device and the second tightening device to bring the first shaping piece 6 and the second shaping piece 9 closer to each other to clamp the silicon steel sheets. When the silicon steel sheets match the shapes of the first shaping piece 6 and the second shaping piece 9, it indicates that the first shaping piece 6 and the second shaping piece 9 are clamped in place and the next step can be performed. The above-mentioned magnetic shielding component shaping tooling can realize the processing and shaping of the silicon steel sheets of the arc-shaped magnetic shielding components, with high efficiency, and can ensure the consistency of the shaping of the silicon steel sheets, thereby meeting the design requirements.

[0044] Specifically, in the embodiment of the present invention, the first tightening device and the second tightening device adopt a manual tightening structure, and the above-mentioned first tightening device includes a first support plate 7, a first push rod 8 and a first tightening structure, wherein the first support plate 7 is arranged on the base plate 5, and the first support plate 7 can be fixed to the base plate 5 by welding, threaded fasteners, etc., and multiple first push rods 8 can be reciprocatingly slidably arranged on the first support plate 7, and each first push rod 8 can be arranged at equal intervals along the length of the first support plate 7, and one end of each first push rod 8 contacts and cooperates with the first shaping member 6, and the first tightening structure is arranged between the first support plate 7 and the first push rod 8 or the first tightening structure is arranged between the first push rod 8 and the base plate 5 so that the first push rod 8 tightens the first shaping member 6.

[0045] The second tightening device includes a second supporting plate 10, a second pushing rod 11 and a second tightening structure. The second supporting plate 10 is arranged on the base plate 5. The second supporting plate 10 can be fixed to the base plate 5 by welding, threaded fasteners, etc., and multiple second pushing rods 11 can be reciprocatingly slidably arranged on the second supporting plate 10. One end of each second pushing rod 11 contacts and cooperates with the second shaping member 9. The second tightening structure is arranged between the second supporting plate 10 and the second pushing rod 11 or the second tightening structure is arranged between the second pushing rod 11 and the base plate 5 so that the second pushing rod 11 presses the second shaping member 9.

[0046] Preferably, the above-mentioned first tightening structure includes an external thread provided on the first push rod 8 and a first threaded hole provided on the first support plate 7, and the first push rod 8 is threadedly engaged with the first threaded hole through the external thread; the second tightening structure includes an external thread provided on the second push rod 11 and a second threaded hole provided on the second support plate 10, and the second push rod 11 is threadedly engaged with the second threaded hole through the external thread; when in use, the first push rod 8 and the second push rod 11 are fed or retracted by rotating the first push rod 8 and the second push rod 11 to clamp or demold the silicon steel sheet.

[0047] To further optimize the above technical solution, a first operating portion is provided at one end of the first push rod 8 away from the first shaping member 6 , and a second operating portion is provided at one end of the second push rod 11 away from the second shaping member 9 .

[0048] Specifically, the first operating portion and the second operating portion are both hexagonal nuts.

[0049] Preferably, the first forming member 6 and the second forming member 9 include an arc-shaped forming portion and a straight forming portion arranged at both ends of the arc-shaped forming portion. Since the silicon steel sheet group needs to be clamped between the first forming member 6 and the second forming member 9, the radii of the arc-shaped forming portions of the first forming member 6 and the second forming member 9 are slightly different, rather than being exactly the same.

[0050] An embodiment of the present invention further provides a magnetic shielding component manufacturing device, which includes a magnetic shielding component shaping tool and a baffle 12, wherein the magnetic shielding component shaping tool is the magnetic shielding component shaping tool as described in the above embodiment, and the baffle 12 cooperates with the adjacent ends of the first shaping member 6 and the second shaping member 9 of the magnetic shielding component shaping tool. The base plate 5, the first shaping member 6, the second shaping member 9, and the two baffles 12 of the magnetic shielding component shaping tool cooperate to form a casting trough for accommodating multiple silicon steel sheets of the magnetic shielding component. After shaping, the two baffles 12 are respectively arranged between the adjacent ends of the first shaping member 6 and the second shaping member 9, so that the base plate 5, the first shaping member 6, the second shaping member 9, and the two baffles 12 form a casting trough, and then epoxy resin is poured into the casting trough. After the epoxy resin is cured, the magnetic shielding component is formed. Since the magnetic shielding component manufacturing device adopts the magnetic shielding component shaping tool in the above embodiment, the technical effect of the magnetic shielding component manufacturing device can be referred to the above embodiment.

[0051] To further optimize the above technical solution, the magnetic shielding component preparation device provided in an embodiment of the present invention also includes a vacuum pumping device, which has a cavity for accommodating the magnetic shielding component forming tooling and the baffle 12. The vacuum pumping device can be used to remove bubbles in the epoxy resin before the epoxy resin is cured, thereby improving the quality of the magnetic shielding component.

[0052] An embodiment of the present invention further provides a method for processing a magnetic shielding component based on the magnetic shielding component manufacturing device of the above embodiment, the method comprising the steps of:

[0053] (1) The silicon steel sheets cut to a preset size are neatly stacked and placed between the first shaping member 6 and the second shaping member 9 of the magnetic shielding component shaping tool of the magnetic shielding component manufacturing device;

[0054] (2) operating the first and second tightening devices of the magnetic shielding component shaping fixture to cause the first shaping member 6 and the second shaping member 9 to squeeze the silicon steel sheets until the shapes of the silicon steel sheets conform to the shapes of the first and second shaping members 6 and 9;

[0055] (3) Baffles 12 are placed at both ends of the first forming member 6 and the second forming member 9 to form a casting trough, and sealant is filled between the first forming member 6 and the bottom plate 5 of the magnetic shielding component forming tooling, between the second forming member 9 and the bottom plate 5 of the magnetic shielding component forming tooling, between the baffle 12 and the bottom plate 5 of the magnetic shielding component forming tooling, between the baffle 12 and the first forming member 6, and between the baffle 12 and the second forming member 9 for sealing;

[0056] (4) Pour epoxy resin into the casting trough, and after the epoxy resin is solidified, demould and clean it to obtain the magnetic shielding component.

[0057] The above technical solution is further optimized, and step (4) is specifically as follows: after pouring epoxy resin into the casting trough, the magnetic shielding component forming tooling is sent to the vacuum device for vacuuming for a preset time and then taken out to remove bubbles in the epoxy resin. After the epoxy resin is cured, the mold is demolded and cleaned to obtain the magnetic shielding component.

[0058] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0059] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A magnetic shielding component shaping tool, characterized in that: include: base plate; a first shaping member, the first shaping member being reciprocally movably disposed on the bottom plate, the first shaping member being connected to an output end of a first pressing device, the first pressing device being used to drive the first shaping member to reciprocate relative to the bottom plate; a second shaping member, the second shaping member being reciprocally movably disposed on the bottom plate and conforming to the shape of the first shaping member, the second shaping member being connected to an output end of a second pressing device, the second pressing device being used to drive the second shaping member to reciprocate relative to the bottom plate, the first shaping member and the second shaping member cooperating with each other to clamp and bend a plurality of silicon steel sheets constituting a magnetic shielding member; The first tightening device includes a first support plate, a first push rod, and a first tightening structure. The first support plate is provided on the bottom plate. A plurality of first push rods are reciprocatingly slidably provided on the first support plate. One end of each first push rod is in contact with and engaged with the first shaped member. The first tightening structure is provided between the first support plate and the first push rod or between the first push rod and the bottom plate so that the first push rod presses the first shaped member. The second tightening device includes a second supporting plate, a second ejector rod, and a second tightening structure. The second supporting plate is provided on the bottom plate. A plurality of second ejector rods are reciprocatingly slidably provided on the second supporting plate. One end of each second ejector rod is in contact with and engaged with the second shaped member. The second tightening structure is provided between the second supporting plate and the second ejector rod or between the second ejector rod and the bottom plate so that the second ejector rod presses against the second shaped member. The first shaping member and the second shaping member include an arc-shaped shaping portion and straight-line shaping portions arranged at both ends of the arc-shaped shaping portion.

2. The magnetic shielding component shaping tool according to claim 1, characterized in that: The first tightening structure includes an external thread provided on the first push rod and a first threaded hole provided on the first support plate, and the first push rod is threadedly engaged with the first threaded hole through the external thread; The second tightening structure includes an external thread provided on the second push rod and a second threaded hole provided on the second support plate, and the second push rod is threadedly engaged with the second threaded hole through the external thread.

3. The magnetic shielding component shaping tool according to claim 2, characterized in that: A first operating portion is provided at one end of the first push rod away from the first shaping member, and a second operating portion is provided at one end of the second push rod away from the second shaping member.

4. The magnetic shielding component shaping tool according to claim 3, characterized in that: The first operating portion and the second operating portion are both hexagonal nuts.

5. A magnetic shielding component manufacturing device, characterized in that: include: A magnetic shielding component shaping tool, wherein the magnetic shielding component shaping tool is the magnetic shielding component shaping tool according to any one of claims 1 to 4; A baffle is cooperated with the adjacent ends of the first forming piece and the second forming piece of the magnetic shielding component forming tooling. The bottom plate of the magnetic shielding component forming tooling, the first forming piece, the second forming piece and the two baffles cooperate to form a casting trough for accommodating multiple silicon steel sheets of the magnetic shielding component.

6. The magnetic shielding member manufacturing device according to claim 5, characterized in that: It also includes a vacuum pumping device, which has a cavity for accommodating the magnetic shielding component shaping tool and the baffle.

7. A method for processing a magnetic shielding member based on the magnetic shielding member manufacturing device according to claim 5 or 6, characterized in that: Including steps: (1) stacking silicon steel sheets cut to a preset size neatly and placing them between a first shaping piece and a second shaping piece of a magnetic shielding component shaping tool of the magnetic shielding component manufacturing device; (2) operating the first tightening device and the second tightening device of the magnetic shielding component shaping tooling to cause the first shaping member and the second shaping member to squeeze the silicon steel sheets until the shapes of the silicon steel sheets are consistent with the shapes of the first shaping member and the second shaping member; (3) placing baffles at both ends of the first shaping member and the second shaping member to form a casting trough, and filling sealant between the first shaping member and the bottom plate of the magnetic shielding component shaping fixture, between the second shaping member and the bottom plate of the magnetic shielding component shaping fixture, between the baffle and the bottom plate of the magnetic shielding component shaping fixture, between the baffle and the first shaping member, and between the baffle and the second shaping member for sealing; (4) pouring epoxy resin into the casting trough, and demoulding and cleaning after the epoxy resin is solidified to obtain a magnetic shielding component.

8. The magnetic shielding member processing method according to claim 7, characterized in that: The step (4) is specifically as follows: after pouring epoxy resin into the casting trough, the magnetic shielding component forming tooling is sent into a vacuuming device for vacuuming for a preset time and then taken out; after the epoxy resin is solidified, the mold is demoulded and cleaned to obtain the magnetic shielding component.

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