Fixing tool, foil winding die and transformer

Abstract

The utility model discloses a fixing tool, foil winding mould and transformer, wherein the fixing tool comprises two baffle plates, one surface of the two baffle plates departing from each other is provided with a locking structure and a base, the base has a locking state when the base is connected with the locking structure so as to be fixed on the baffle plates, and the locking structure is connected with the locking structure so as to fix the base on the baffle plates. And in the unlocking state, the part structures of the two bases move towards the first direction, so that the part structures of the two bases are opposite to each other. According to the utility model, the bases capable of moving along the first direction are arranged, when the bases are in the locking state, namely the two bases are fixed on the baffle plate, the bases abut against the copper bar and fix the copper bar, and when the bases are in the unlocking state, the two bases can move relative to the baffle plate, so that the positions of the bases can be adjusted, and the copper bar can be fixed subsequently; when the fixing tool is used for fixing the die, other parts except the copper bar and the die body cannot be wrapped in the coil, so that the fixing tool cannot influence the shape of the foil coil.

Description

Technical Field

[0001] The utility model relates to the technical field of copper bar fixing devices, in particular to a fixing tool, a foil winding mould and a transformer. Background Art

[0002] When foil-winding transformer coils, the copper bar is usually fixed by welding fixed blocks at both ends of the mold or welding a full-length limit strip on the mold. However, during the foil winding process, the fixed blocks or limit strips will be wrapped in the coil. Since the fixed blocks or limit strips are located on the upper surface of the copper bar, the fixed blocks or limit strips will affect the shape of the foil-wound coil. Therefore, a new technical solution is needed to solve this problem. Utility Model Content

[0003] In view of the problems mentioned in the background technology, the purpose of the present invention is to provide a fixed tooling, a foil winding mold and a transformer to solve the problem mentioned in the background technology that the existing fixed blocks or limit strips may affect the shape of the foil winding coil.

[0004] The above technical objectives of the utility model are achieved through the following technical solutions:

[0005] A fixing tool comprises two baffles, wherein a surface of the two baffles facing away from each other is provided with a locking structure and a base, wherein the base has a locked state when connected to the locking structure to be fixed to the baffles, and an unlocked state when moving in a first direction to make partial structures of the two bases relative to each other.

[0006] Optionally, the baffle has an upper side, a first through hole is formed on a surface of the baffle, the upper side has a first opening connected to the first through hole, and the first through hole is used to expose partial structures of the two bases that are opposite to each other.

[0007] Optionally, a convex portion is provided on a surface of one of the bases facing the other.

[0008] Optionally, the protrusion passes through the first through hole and protrudes from a surface of the baffle facing away from the base.

[0009] Optionally, the protrusion is a pressure plate.

[0010] Optionally, in the height direction, a fastening plate is provided on the top surface of the base, and the vertical projection of the fastening plate falls on the top surface. The fastening plate is connected to the base by a first bolt. When unlocked, one side edge of one fastening plate faces one side edge of another fastening plate.

[0011] Optionally, one of the fastening plates includes a first connecting portion and a second connecting portion, the first connecting portion is connected to the base, and a second opening is provided on a lower side edge of the second connecting portion in a direction away from the top end surface.

[0012] Optionally, a screw hole is provided on the surface of the baffle facing the base; a second through hole is opened on the surface of the base, and the second through hole extends along the first direction; the locking structure includes a second bolt, and the second bolt includes a head and a screw rod, and the screw rod passes through the second through hole and is connected to the screw hole, and the head is close to the surface of the base facing away from the baffle.

[0013] The utility model also provides a foil winding mold, comprising a mold body and the above-mentioned fixing tooling;

[0014] The mold body is used to carry the copper bar, and two opposite ends of the mold body in the length direction are respectively provided with a baffle. In the unlocked state, the two bases are respectively in contact with the opposite ends of the copper bar in the length direction.

[0015] The utility model also provides a transformer, comprising the foil winding mould as described above.

[0016] In practical applications, the fixing tool of the present application can be used in combination with the foil winding mold in the prior art. Specifically, in the utility model, two bases that can move along the first direction are provided. When the two bases are in a locked state, that is, the two bases are fixed on the baffle, the bases abut against the copper bar, and the copper bar is in a fixed state. When in an unlocked state, the two bases can move relative to the baffle, and then the position of the base can be adjusted to facilitate the subsequent fixing of the copper bar. Since the copper bar is fixed by the base in the utility model, and the base is installed on the end face opposite to the baffle, in the process of foil winding the coil, except for the copper bar and the mold body, no other parts will be covered in the coil. Therefore, the fixing tool provided by the utility model will not affect the shape of the foil winding coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the fixed tooling of the utility model;

[0019] Figure 2This is a structural schematic diagram of another embodiment of the fixed tooling of the utility model;

[0020] Figure 3 This is a structural schematic diagram of another embodiment of the fixed tooling of the utility model;

[0021] Figure 4 This is a structural schematic diagram of another embodiment of the fixing tool of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the foil winding mold of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of a copper busbar in an embodiment of the utility model;

[0024] Figure 7 This is a schematic diagram of the structure of another copper busbar in an embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the structure after the foil winding mold and the copper busbar are assembled in one embodiment of the utility model;

[0026] Fig. 9 This is a schematic structural diagram of another embodiment of the present invention after the foil winding mold and the copper bus are assembled.

[0027] Description of Figure Numbers:

[0028] Label name Label name 100 Copper busbar 4 Fastening plate 1001 Grooves 401 First connection part 1 Bezel 402 Second connection part 101 First through hole 4021 Second opening 102 First opening 5 Mold body 2 Base 6 First Bolt 3 convex part 7 Second bolt

[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text is to include three parallel solutions. Taking "A and / or B as an example", it includes solution A, or solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0034] The utility model provides a fixing tool, which is used for fixing a copper busbar and will not affect the shape of a foil-wound coil.

[0035] See also Figure 1 In one embodiment of the utility model, the fixing tool includes two baffles 1, and a surface of the two baffles 1 facing away from each other is provided with a locking structure and a base 2. The base 2 has a locked state when it is connected to the locking structure to be fixed on the baffle 1, and the base 2 also has an unlocked state when it moves in a first direction to make the partial structures of the two bases 2 relative to each other.

[0036] The technical solution of this embodiment adopts a base 2 that can move along the first direction to fix the copper busbar 100 (the structure of the copper busbar 100 can be found in Figure 6), when in a locked state, the base 2 is fixed on the baffle 1 and cannot move, and the base 2 abuts against the end of the copper bar 100 in the length direction. Therefore, the copper bar 100 can be fixed, which is convenient for the subsequent foil winding of the copper bar 100. When in an unlocked state, the base 2 can move relative to the baffle 1. At this time, the copper bar 100 is in an unfixed state. The first direction is the height direction of the baffle. The base 2 moves along the first direction to adjust the position of the base 2, so that the base 2 abuts against the end of the copper bar 100 in the length direction. Since the base 2 is used to fix the copper bar 100 in this embodiment, and the base 2 is installed on the end face opposite to the baffle 1, during the process of foil winding, except for the copper bar 100 and the mold body 5, no other components will be covered in the coil. Therefore, the fixing tool provided in this embodiment will not affect the shape of the foil winding coil.

[0037] See also Figure 1 In one embodiment of the utility model, in the height direction, the baffle 1 has an upper side, a first through hole 101 is opened on the surface of the baffle 1, and the upper side has a first opening 102 connected to the first through hole 101, and the first through hole 101 is used to expose the partial structure of the two bases 2 relative to each other.

[0038] The technical solution of this embodiment adopts a first through hole 101, which can clamp the copper busbar 100, so as to limit the copper busbar 100 and prevent it from moving. The upper ends of the two bases 2 extending along the first direction protrude from the lower side of the first through hole 101. At this time, the parts of the two bases 2 that are opposite to each other and protrude from the first through hole 101 can resist the opposite ends of the copper busbar 100 in the length direction. After the bases 2 are fixed, a relative extrusion force is generated by the two bases 2 to resist the end of the copper busbar 100, thereby fixing the copper busbar 100. During installation, the base 2 only needs to be firmly mounted on the baffle 1 using a locking structure to complete the fixation.

[0039] See also Figure 2 In another embodiment of the present invention, a relatively short copper busbar 100 can be handled at the same time, and a protrusion 3 is provided on a surface of a base 2 facing the other side.

[0040] The technical solution of this embodiment adopts a protrusion 3 arranged on one of the bases 2, and the upper end surface of the protrusion 3 is located below the upper end surface of the copper busbar. The protrusion 3 is used to abut the side of the copper busbar 100. The existence of the protrusion 3 can abut one end of the copper busbar 100 to fix the copper busbar 100. The protrusion 3 passes through the first through hole 101 and protrudes from a surface of the baffle 1 away from the base 2. Since the protrusion 3 extends between the opposite end surfaces of the two baffles 1, it can cope with some relatively short copper busbars 100. The difference between the longest copper busbar 100 and the shortest copper busbar 100 should be equal to the length of the protrusion 3.

[0041] See also Figure 3 In another embodiment of the present utility model, the protrusion 3 is a pressure plate.

[0042] The technical solution of this embodiment adopts a convex portion 3 that can press the end of the copper busbar 100, and uses the convex portion 3 to press against the upper end of the copper busbar 100 to fix it more stably. Therefore, a groove 1001 for accommodating the convex portion 3 can be opened at the upper end of the copper busbar 100 (see Figure 7 ), the groove 1001 corresponds to the shape of the protrusion 3, the protrusion 3 can be a rectangular pressing plate, a U-shaped pressing plate or a polygonal pressing plate, and the shape of the protrusion 3 can be adjusted according to specific production requirements. Since the protrusion 3 is pressed against the upper end of the copper bar 100, the protrusion 3 only needs to extend into the groove 1001 to fix the copper bar 100. Therefore, this embodiment can handle some copper bars 100 of different lengths, and the difference in length between the longest copper bar 100 and the shortest copper bar 100 should be This control is within the range of the length of the protrusion 3. In this embodiment, the protrusion 3 is used to press the top surface of the copper busbar 100. Compared with using the protrusion 3 to press the side of the copper busbar 100, the distance between the top surface of the base 2 protruding from the lower side of the first through hole 101 along the first direction and the lower side of the first through hole 101 is larger. Since the protrusion 3 presses on the copper busbar 100, the fixing effect of the copper busbar 100 is better. When the copper busbar 100 is fixed, the upper end surface of the protrusion 3 is located below the upper end surface of the copper busbar 100.

[0043] See also Figure 4 In another embodiment of the utility model, a fastening plate 4 is provided on the top surface of the base 2, and a vertical projection of the fastening plate 4 falls on the top surface. The fastening plate 4 is connected to the base 2 by a first bolt 6. When unlocked, one side of the fastening plate 4 faces one side of the other fastening plate 4.

[0044] The technical solution of this embodiment is to arrange a fastening plate 4 above the base 2. During installation, the fastening plate 4 is installed on the base 2. At this time, the protrusion 3 is installed on the fastening plate 4 instead of the base 2. The fastening plate 4 is used to press the end of the copper bus 100 to fix it. The top surface of the base 2 is flush with the lower side of the first through hole 101. The protrusion 3 presses on one end of the copper bus 100 to fix the copper bus 100. The other fastening plate 4 is used to press the bending part of the copper bus 100 to achieve the compression and fixation of the two ends of the copper bus 100. Compared with the method in which the protrusion 3 presses against the copper bus 100, this method has a better fixing effect on the copper bus 100. However, the fixing method using the protrusion 3 to press against the ground has the advantages of simple structure and more convenient installation. The fixing method can be selected according to specific needs to fix the copper bus 100.

[0045] See also Figure 4In another embodiment of the present invention, one of the fastening plates 4 includes a first connecting portion 401 and a second connecting portion 402, the first connecting portion 401 is connected to the base 2, and the lower side of the second connecting portion 402 is provided with a second opening 4021 in a direction away from the top surface.

[0046] The technical solution of this embodiment adopts a fastening plate 4 with a protrusion 3 parallel to the top surface of the base 2, and a fastening plate 4 with a second opening 4021 perpendicular to the top surface of the base 2, and a second opening 4021 is opened on the fastening plate 4. During installation, the relative position of the base 2 is adjusted so that its top surface is flush with the lower side of the first through hole 101, so that the base 2 can be fixed, and then the copper bus 100 is clamped by the first through hole 101, and then the fastening plate 4 is installed on the base 2 at both ends of the copper bus 100. The copper bus 100 is clamped inside the second opening 4021, and the end is directly pressed by a fastening plate 4, and the other end is pressed by the protrusion 3. The first through hole 101, the protrusion 3, and the second opening 4021 cooperate with each other to fix the two ends of the copper bus 100 to prevent it from moving. When facing copper buses 100 of different thicknesses, it is only necessary to change the screw-in depth of the first bolt 6.

[0047] In one embodiment of the present invention, please refer to Figure 1 A screw hole is provided on the surface of the baffle 1 facing the base 2, and a second through hole 201 is opened on the surface of the base 2, and the second through hole 201 extends along the first direction; the locking structure includes a second bolt 7, and the second bolt 7 includes a head and a screw rod. The screw rod passes through the second through hole 201 and is connected to the screw hole, and the head is close to the surface of the base 2 away from the baffle 1.

[0048] The technical solution of this embodiment adopts a locking structure and a screw hole. During installation, the position of the base 2 is adjusted so that its top surface is located at the upper end of the lower side of the first through hole 101, and the second bolt 7 is installed in the second through hole 201 and the screw hole. The base 2 is fixed by the second bolt 7. When dealing with copper bars 100 of different lengths, it is only necessary to adjust the screw-in depth of the second bolt 7. One base 2 is against the bending part of the copper bar 100, and the other base 2 is against the other side of the copper bar 100.

[0049] The utility model also provides a foil winding mold, see Figure 5 , Figure 8 and Fig. 9 The foil winding mold includes a mold body 5 and a fixing tool. The specific structure of the fixing tool is referred to the above embodiment. Since the foil winding mold adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the foil winding mold is used to install the above fixing tool, please refer to Figure 5, including a mold body 5, the mold body 5 is used to carry the copper busbar 100, the baffle 1 is installed at two opposite ends of the mold body 5 in the length direction, and when unlocked, the two bases 2 are respectively abutted against the two opposite ends of the copper busbar 100 in the length direction.

[0050] The technical solution of this embodiment is to install the baffles 1 at two opposite ends in the length direction of the mold body 5. When in use, the base 2 is installed at the opposite end of the two baffles 1, the copper bus 100 is placed in the first through hole 101, and then the two fastening plates 4 are installed on the base 2 by using the first bolts 6, and the two ends of the copper bus 100 are pressed to start foil winding.

[0051] The utility model also proposes a transformer, which includes a foil-wound mold. The specific structure of the foil-wound mold refers to the above-mentioned embodiment. Since the present subject 2 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0052] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A fixed tool, characterized in that: It comprises two baffles, and a surface of the two baffles facing away from each other is provided with a locking structure and a base. The base has a locked state when connected with the locking structure to be fixed on the baffle, and an unlocked state when moving in a first direction to make partial structures of the two bases relative to each other.

2. The fixing tool according to claim 1, characterized in that: In the height direction, the baffle has an upper side, a first through hole is opened on the surface of the baffle, the upper side has a first opening connected to the first through hole, and the first through hole is used to expose the partial structures opposite to the two bases.

3. The fixing tool according to claim 2, characterized in that: A convex portion is provided on a surface of one of the bases facing the other.

4. The fixing tool according to claim 3, characterized in that: The protrusion passes through the first through hole and protrudes from a surface of the baffle away from the base.

5. A fixing tool according to claim 4, characterized in that: The convex portion is a pressing plate.

6. The fixing tool according to claim 1, characterized in that: In the height direction, a fastening plate is provided on the top surface of the base, and the vertical projection of the fastening plate falls on the top surface. The fastening plate is connected to the base by a first bolt. When unlocked, one side edge of the fastening plate faces one side edge of the other fastening plate.

7. The fixing tool according to claim 6, characterized in that: One of the fastening plates includes a first connecting portion and a second connecting portion, wherein the first connecting portion is connected to the base, and a second opening is provided on a lower side edge of the second connecting portion in a direction away from the top end surface.

8. The fixing tool according to claim 1, characterized in that: The surface of the baffle facing the base is provided with screw holes; A second through hole is formed on the surface of the base, and the second through hole extends along the first direction; The locking structure includes a second bolt, the second bolt includes a head and a screw rod, the screw rod passes through the second through hole and is connected to the screw hole, and the head is closely attached to a surface of the base away from the baffle.

9. A foil winding mold, characterized in that: It comprises a mold body and a fixing tool as claimed in any one of claims 1 to 8; The mold body is used to carry the copper bar, and two opposite ends of the mold body in the length direction are respectively provided with a baffle. In the unlocked state, the two bases are respectively in contact with the opposite ends of the copper bar in the length direction.

10. A transformer, characterized in that: Comprising the foil-winding mould as claimed in claim 9.

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