An ei transformer shaping device

Abstract

An EI transformer shaping device, comprising a compression mold, the compression mold comprises an upper mold, a lower mold and a fixing piece, the middle part of the upper mold and the lower mold is inwardly recessed to form a mold cavity, and the middle part of the fixing piece is provided with a limiting opening; when the upper mold and the lower mold are pressed towards each other, the limiting opening is located between the two mold cavities, the vertical projection of the limiting opening is located in the mold cavity, the edge of the mold cavity of the upper mold and the lower mold abuts against the edge of the fixing piece, the fixing piece fixes the periphery of the skeleton, and the copper wire around the skeleton will not bounce outwards and break due to excessive pressure on the upper and lower ends. In the process of extrusion, the edge of the fixing piece is pressed by the edge of the mold cavity of the upper mold and the lower mold, the distance between the upper mold and the lower mold is limited, and it is further ensured that the upper and lower ends of the skeleton will not be excessively extruded, thereby improving the yield of transformer production.

Description

Technical Field

[0001] The invention relates to the technical field of transformer production and manufacturing, in particular to an EI transformer shaping device. Background Art

[0002] After the copper wire is wrapped around the transformer's bobbin, it needs to be squeezed through a shaping device to narrow the gaps between the wires and reduce the transformer's size. However, the gaps between the copper wires on each bobbin are inconsistent, and the shaping device must be used to squeeze the copper wire while observing its condition. Therefore, current shaping devices use two extrusion plates or two U-shaped fixtures to squeeze the copper wires up and down on the bobbin. However, due to the excessive squeezing force of the equipment, the upper and lower ends of the copper wire are subjected to excessive force, causing the copper wire to pop out to the left and right ends and break, resulting in defective products. Therefore, a stable and efficient transformer shaping device is urgently needed. Summary of the Invention

[0003] In view of the above-mentioned defects, the purpose of the present invention is to provide an EI transformer shaping device to prevent the upper and lower ends of the copper wire from being subjected to excessive pressure, thereby preventing the copper wire from popping out and breaking.

[0004] To achieve this purpose, the present invention adopts the following technical solution: an EI transformer shaping device, comprising a pressing mold, the pressing mold comprising an upper mold, a lower mold and a fixing member, the middle portions of the upper mold and the lower mold are recessed inward to form a mold cavity, and a limiting opening is provided in the middle portion of the fixing member;

[0005] When the upper mold and the lower mold are squeezed together, the limit opening is located between the two mold cavities, the vertical projection of the limit opening is located in the mold cavity, and the edges of the mold cavities of the upper mold and the lower mold are against the edges of the fixing part.

[0006] Preferably, the front edge and the rear edge of the mold cavity are recessed to form a skeleton avoidance groove, and the left and right ends of the skeleton avoidance groove are flush with the left and right ends of the upper mold or the lower mold respectively.

[0007] Preferably, observation notches are respectively provided on the left and right sides of the upper mold and the lower mold.

[0008] Preferably, a first wire gap is opened on the front side of the upper mold and the lower mold.

[0009] Preferably, a second wire notch is formed on the wall of the first model slot.

[0010] Preferably, the fixing member includes a first fastener and a second fastener, the first fastener includes a first arm and a second arm, the second arms are respectively provided on both sides of the first arm, the two second arms are located on the same side of the first arm, and the first arm and the two second arms are combined to form a notch;

[0011] The second fastener is connected to a side of the first fastener facing the notch. After the first fastener and the second fastener are combined, the notch of the first fastener cooperates with the second fastener to form the limiting opening.

[0012] Preferably, one of the opposing surfaces of the second arm and the second fastener is provided with a mounting notch, and the other opposing surface is provided with a mounting column matching the mounting notch.

[0013] Preferably, it further includes a workbench and a driver, the driver and the pressing mold are installed on the workbench, the driver is connected to the upper mold in a transmission manner, and can drive the upper mold to move toward the lower mold.

[0014] Preferably, the driver is a hydraulic cylinder.

[0015] One of the above technical solutions has the following advantages or beneficial effects: the fixing member secures the perimeter of the frame, preventing the copper wires located around the perimeter from being protruded or broken due to excessive pressure on the upper and lower ends. During the extrusion process, the edges of the mold cavities of the upper and lower molds apply pressure to the edges of the fixing member, limiting the distance between the upper and lower molds. This further ensures that the upper and lower ends of the frame are not excessively squeezed, thereby improving the yield rate of transformer production. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Fig. 1 It is a structural diagram of an embodiment of the present invention.

[0017] Fig. 2 It is a structural schematic diagram of a pressing mold in one embodiment of the present invention.

[0018] Fig. 3 1 is a schematic structural diagram of a fixing member in an embodiment of the present invention.

[0019] Fig. 4 1 is an exploded view of a fixing member according to an embodiment of the present invention.

[0020] Among them: upper mold 1, lower mold 2, mold cavity 3, skeleton avoidance groove 4, observation notch 5, first wire notch 6, second wire notch 7, fixing part 8, first fastener 8a, first arm 8aa, second arm 8ab, second fastener 8b, limit opening 8c, installation notch 9, installation column 10, workbench 11, driver 12. DETAILED DESCRIPTION

[0021] The following describes embodiments of the present invention in detail. Examples of the embodiments 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships 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, rather than indicating or implying 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 limiting the present invention.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0024] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0025] like Figs. 1-4 As shown, an EI transformer shaping device comprises a pressing mold, wherein the pressing mold comprises an upper mold (1), a lower mold (2) and a fixing member (8), wherein the middle portions of the upper mold (1) and the lower mold (2) are recessed inward to form a mold cavity (3), and a limiting opening (8c) is provided in the middle portion of the fixing member (8);

[0026] When the upper mold (1) and the lower mold (2) are pressed against each other, the limiting opening (8c) is located between the two mold cavities (3), the vertical projection of the limiting opening (8c) is located in the mold cavity (3), and the edges of the mold cavities (3) of the upper mold (1) and the lower mold (2) are against the edge of the fixing member (8).

[0027] In order to prevent the copper wires of the skeleton from being excessively squeezed by the upper mold (1) and the lower mold (2) during shaping, thereby causing the copper whiskers to break, the driver (12) adds a fixing member (8) to the pressing mold. The fixing member (8) is provided with a limiting opening (8c). Before squeezing the copper wires of the skeleton, the skeleton is first prevented from being placed in the limiting opening (8c) of the fixing member (8). The copper wires around the skeleton are respectively placed in the limiting opening (8c). The height of the skeleton is higher than the fixing member (8). The copper wires on the upper and lower end faces of the skeleton are exposed to the fixing member (8). When the upper mold (1) and the lower mold (2) are pressed together, the copper wires at the upper and lower ends of the skeleton are squeezed by the mold cavity (3), reducing the gap between the copper wires on the skeleton, thereby achieving the purpose of reducing the volume of the transformer. Because the fixing member (8) fixes the four sides of the skeleton, the copper wires located around the skeleton will not jump out to the four sides or break due to excessive pressure on the upper and lower ends. During the extrusion process, the edges of the mold cavities (3) of the upper mold (1) and the lower mold (2) press the edges of the fixing member (8), limiting the distance between the upper mold (1) and the lower mold (2), further ensuring that the upper and lower ends of the skeleton will not be excessively squeezed, thereby improving the yield rate of transformer production.

[0028] Preferably, the front edge and the rear edge of the mold cavity (3) are recessed to form a skeleton avoidance groove (4), and the left and right ends of the skeleton avoidance groove (4) are flush with the left and right ends of the upper mold (1) or the lower mold (2), respectively.

[0029] In order to further squeeze the copper wires on the skeleton, the driver (12) reduces the spacing between the copper wires. The present application is provided with a skeleton avoidance groove (4). When the skeleton is placed on the lower mold (2), the lower edge of the skeleton will fall into the skeleton avoidance groove (4). During the squeezing process, the lower edge of the skeleton will fall into the skeleton avoidance groove (4) of the upper mold (1). At this time, the upper mold (1) and the lower mold (2) can be prevented from squeezing the skeleton, and the copper wires can be further compressed.

[0030] Preferably, observation notches (5) are respectively provided on the left and right sides of the upper mold (1) and the lower mold (2).

[0031] The driver (12) staff can observe the situation of the copper wire being squeezed through the observation gap (5) so as to make timely response.

[0032] Preferably, a first wire notch (6) is provided on the front sides of the upper mold (1) and the lower mold (2).

[0033] Preferably, a second wire notch (7) is provided on the wall of the first model slot.

[0034] The driver (12) transformer usually leads out some copper wires for subsequent installation. In the present application, a first wire notch (6) and a second wire notch (7) are opened on the front side of the upper mold (1) and the lower mold (2). The lead wires can first pass through the first wire notch (6) and the second wire notch (7) to pass through the upper mold (1) and the lower mold (2) to avoid the lead wires being squeezed.

[0035] Preferably, the fixing member (8) includes a first latch member (8a) and a second latch member (8b), the first latch member (8a) includes a first arm (8aa) and a second arm (8ab), the second arms (8ab) are respectively arranged on both sides of the first arm (8aa), the two second arms (8ab) are located on the same side of the first arm (8aa), and the first arm (8aa) and the two second arms (8ab) are combined to form a notch;

[0036] The second latch (8b) is connected to the side of the first latch (8a) facing the notch. After the first latch (8a) and the second latch (8b) are combined, the notch of the first latch (8a) cooperates with the second latch (8b) to form the limiting opening (8c).

[0037] When the skeleton is placed in the limiting opening (8c), the second fastener (8b) is opened to prevent the skeleton from being placed in the recess of the first fastener (8a), and the second fastener (8b) is then used to seal the recess, thereby fixing the skeleton in the limiting opening (8c).

[0038] Preferably, one of the opposite surfaces of the second arm (8ab) and the second fastener (8b) is provided with a mounting notch (9), and the other opposite surface is provided with a mounting column (10) matching the mounting notch (9).

[0039] The volume of the mounting column (10) of the driver (12) is slightly larger than the volume of the mounting slot (9). When the two are matched and assembled with each other, the first clip (8a) and the second clip (8b) can be assembled together by interference fit, making the fixing member (8) more secure.

[0040] Preferably, it further comprises a workbench (11) and a driver (12), wherein the driver (12) and the pressing mold are mounted on the workbench (11), and the driver (12) is transmission-connected to the upper mold (1) and can drive the upper mold (1) to move toward the lower mold (2).

[0041] Preferably, the driver (12) is a hydraulic cylinder.

[0042] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0043] While 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 invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. An EI transformer shaping device, characterized in that: The pressing mold comprises an upper mold (1), a lower mold (2) and a fixing member (8), wherein the middle portions of the upper mold (1) and the lower mold (2) are recessed inwards to form a mold cavity (3), and a limiting opening (8c) is provided in the middle portion of the fixing member (8); When the upper mold (1) and the lower mold (2) are pressed against each other, the limiting opening (8c) is located between the two mold cavities (3), the orthographic projection of the limiting opening (8c) in the vertical direction is located in the mold cavity (3), and the edges of the mold cavities (3) of the upper mold (1) and the lower mold (2) abut against the edge of the fixing member (8); The front edge and the rear edge of the mold cavity (3) are recessed to form a skeleton avoidance groove (4), and the left and right ends of the skeleton avoidance groove (4) are flush with the left and right ends of the upper mold (1) or the lower mold (2), respectively; The fixing member (8) includes a first latch member (8a) and a second latch member (8b), the first latch member (8a) includes a first arm (8aa) and a second arm (8ab), the second arms (8ab) are respectively arranged on both sides of the first arm (8aa), the two second arms (8ab) are located on the same side of the first arm (8aa), and the first arm (8aa) and the two second arms (8ab) are combined to form a notch; The second latch (8b) is connected to the side of the first latch (8a) facing the notch. After the first latch (8a) and the second latch (8b) are combined, the notch of the first latch (8a) cooperates with the second latch (8b) to form the limiting opening (8c).

2. The EI transformer shaping device according to claim 1, characterized in that: Observation notches (5) are respectively provided on the left and right sides of the upper mold (1) and the lower mold (2).

3. The EI transformer shaping device according to claim 1, characterized in that: A first wire notch (6) is provided on the front sides of the upper mold (1) and the lower mold (2).

4. The EI transformer shaping device according to claim 1, characterized in that: A second wire notch (7) is provided on the groove wall of the lower mold.

5. The EI transformer shaping device according to claim 1, characterized in that: One of the opposite surfaces of the second arm (8ab) and the second fastener (8b) is provided with a mounting notch (9), and the other opposite surface is provided with a mounting column (10) matching the mounting notch (9).

6. The EI transformer shaping device according to claim 1, characterized in that: It also includes a workbench (11) and a driver (12), wherein the driver (12) and the pressing mold are installed on the workbench (11), and the driver (12) is connected to the upper mold (1) in a transmission manner and can drive the upper mold (1) to move toward the lower mold (2).

7. The EI transformer shaping device according to claim 6, characterized in that: The driver (12) is a hydraulic cylinder.

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