Cover plate tensioning structure device of transformer pouring coil mold

Abstract

According to the cover plate tensioning structure device of the transformer pouring coil mold, a plurality of hook-shaped kidney-shaped holes are transversely formed in the surfaces of the front side edges and the rear side edges of a cover plate and a bottom plate at equal intervals, strip-shaped kidney-shaped holes are formed in the four corners of the oblique angles of the surfaces of the cover plate and the bottom plate, and the hook-shaped kidney-shaped holes and the strip-shaped kidney-shaped holes are side edge conduction type kidney-shaped holes. The side edges of the hook-shaped kidney-shaped hole and the strip-shaped kidney-shaped hole are communicated with the surfaces of the side edges of the adjacent cover plate and bottom plate, the hook-shaped kidney-shaped hole is an L-shaped side through hole, the cut edge of the hook-shaped kidney-shaped hole is vertically provided with a conducting groove in the longitudinal direction, the strip-shaped kidney-shaped hole is a parallel strip-shaped conducting groove hole, and the strip-shaped kidney-shaped hole is obliquely communicated with the surfaces of the side edges of the cover plate and the bottom plate. Through the improved design of the shapes of the tensioning fixing holes of the cover plate and the bottom plate of the mold, the cover plate of the mold does not need to be fixed or detached after a pulling screw rod for locking is completely detached, and the design of the coil mold cover plate tensioning structure device is improved, so that the operation process can be simplified, the working efficiency can be improved, the service life of the pulling screw rod can be prolonged, and the production cost can be reduced.

Description

Technical Field

[0001] This article belongs to the technical field of coil molds and specifically relates to a cover plate tensioning structure device for a transformer casting coil mold. Background Art

[0002] At present, transformer casting coils are produced using molded molds. The molds used are divided into mold core, upper and lower cover plates, outer mold, tensioning device and other parts. After the coil is wound on the mold core, it is molded and pressed. When pressing, the upper and lower cover plates are used to press the outer mold tightly to prevent glue leakage and deformation of the outer mold.

[0003] The cover plate tensioning device is a circular or waist-shaped hole opened on the upper and lower mold end covers, and a pulling screw with threads on both ends passes through the upper cover plate of the mold to connect the lower cover plate of the mold, and is locked and fixed with flat washers, spring washers, and nuts.

[0004] like Figure 3 As shown, this tensioning structure device with a circular or waist-shaped hole on the mold requires the flat washer, spring washer and nut at one end to be completely disassembled each time it is installed, and then the tension screw is passed through the hole in the upper cover plate and falls into the hole in the lower end cover, and then the flat washer, spring washer and nut on the mold cover plate are locked and fixed.

[0005] The tightening installation structure with round or waist-shaped holes on the mold cover is not only inconvenient to install, but also time-consuming and labor-intensive. Frequent disassembly of the bolt group on the tension screw can easily lead to thread wear and reduce the service life of the screw. Utility Model Content

[0006] In order to solve the above problems, this paper proposes a cover plate tensioning structure device for a transformer casting coil mold. The coil mold includes a mold core, an outer mold, a cover plate and a bottom plate. A tensioning screw is provided between the cover plate and the bottom plate. The front and rear side surfaces of the cover plate and the bottom plate are horizontally equidistantly provided with a plurality of hook-shaped waist holes. The four corners of the oblique angles of the surface of the cover plate and the bottom plate are provided with strip-shaped waist holes. The hook-shaped waist holes and the strip-shaped waist holes are both side-conducting waist holes. The sides of the hook-shaped waist holes and the strip-shaped waist holes are connected to the side surfaces of the adjacent cover plate and the bottom plate. The inner sides of the hook-shaped waist holes and the strip-shaped waist holes are penetrated up and down. The type is provided with a tensioning screw, the hook-shaped waist hole is an L-shaped side through hole, the cut edge of the hook-shaped waist hole is vertically provided with a conducting groove, the strip waist hole is a parallel long conducting groove hole, and the strip waist hole is obliquely connected to the side surface of the cover plate and the bottom plate. By improving the design of the tightening and fixing hole shape of the cover plate and the bottom plate of the mold, it is not necessary to completely disassemble the locking tensioning screw before fixing or disassembling the mold cover plate. By improving the design of the coil mold cover tensioning structure device, the operation process can be simplified, the work efficiency can be improved, the service life of the tensioning screw can be increased, and the production cost can be reduced.

[0007] The shape of the outer mold is a flat-round cylinder. A mold core runs through the center of the inside of the outer mold. An outer mold boss is vertically provided on one side of the outer mold. A cover plate is provided at the upper end of the outer mold, and a bottom plate is provided at the lower end of the outer mold. A coil is provided between the outer mold and the mold core. The outer contour shapes of the cover plate and the bottom plate are both arc-end rectangular plates. Arc-shaped end edges are symmetrically provided at both ends of the cover plate and the bottom plate. The front and back sides of the cover plate and the bottom plate are parallel straight edges. Strip-shaped waist holes run through the arc-shaped end edges. Hook-shaped waist holes are connected to the parallel straight edges. Mold feet are provided at the four corners of the bottom of the bottom plate. The arc diameter of the hook-shaped waist hole is the same as the outer diameter of the tensioning screw. The diameter of the conduction groove of the hook-shaped waist hole is the same as the outer diameter of the tensioning screw. The width of the strip-shaped waist hole is the same as the outer diameter of the tensioning screw. The circular or waist-shaped pull rod holes on the cover plate and the bottom plate of the mold are improved and designed into L-shaped waist-shaped grooves distributed along the edge, which are respectively distributed at the corresponding positions on the edge of the outer side of the mold. It is not necessary to completely disassemble the bolt group. Put the tensioning screw into the L-shaped waist-shaped groove and then lock the bolt group to tighten and fix it.

[0008] Beneficial effects:

[0009] Through the improved design of the shape of the tensioning and fixing holes of the cover plate and the bottom plate of the mold, it is not necessary to completely disassemble the tensioning screw for locking before fixing or disassembling the mold cover plate. Through the design improvement of the tensioning structure device of the coil mold cover plate, the operation process can be simplified, the work efficiency can be improved, the service life of the tensioning screw can be increased, and the production cost can be reduced.

[0010] The circular or waist-shaped pull rod holes on the cover plate and the bottom plate of the mold are improved and designed into L-shaped waist-shaped grooves distributed along the edge, which are respectively distributed at the corresponding positions on the edge of the outer side of the mold. It is not necessary to completely disassemble the bolt group. Put the tensioning screw into the L-shaped waist-shaped groove and then lock the bolt group to tighten and fix it. Description of the drawings

[0011] Figure 1 It is a top view of a tensioning structure device for the cover plate of a transformer casting coil mold;

[0012] Figure 2 It is a front view of a tensioning structure device for the cover plate of a transformer casting coil mold;

[0013] Figure 3 It is a top view of the existing mold;

[0014] In the figure: 1. Mold core, 2. Coil, 3. Tensioning screw, 4. Outer mold, 5. Cover plate, 6. Bottom plate, 7. Mold feet, 8. Outer mold boss, 9. Hook-shaped waist hole, 10. Strip-shaped waist hole. Detailed implementation manners

[0015] To deepen the understanding of the present utility model, the present utility model will be further described in detail below in conjunction with embodiments and the accompanying drawings. The embodiments are only used to explain the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0016] Mold core 1, coil 2, tensioning screw 3, outer mold 4, upper cover plate 5, lower cover plate 6, mold foot 7, outer mold boss 8, hook-shaped waist hole 9, strip-shaped waist hole 10.

[0017] As Figure 1 、 2 shown;

[0018] A cover plate tensioning structure device for a transformer casting coil mold. The coil 2 mold includes a mold core 1, an outer mold 4, a cover plate 5, and a bottom plate 6. A tensioning screw 3 is provided in a penetrating manner between the cover plate 5 and the bottom plate 6. A plurality of hook-shaped waist holes 9 are provided at equal lateral distances on the front and rear side surfaces of the cover plate 5 and the bottom plate 6. Strip-shaped waist holes are provided at the four corners of the bevel angles on the surfaces of the cover plate 5 and the bottom plate 6. Both the hook-shaped waist hole 9 and the strip-shaped waist hole 10 are side-conducting waist holes. The sides of the hook-shaped waist hole 9 and the strip-shaped waist hole 10 are both connected to the adjacent side surfaces of the cover plate 5 and the bottom plate 6. The tensioning screw 3 is provided in a vertically penetrating manner inside both the hook-shaped waist hole 9 and the strip-shaped waist hole 10. The hook-shaped waist hole 9 is an L-shaped side through hole, and a conduction groove is provided vertically perpendicular to the cutting edge of the hook-shaped waist hole 9. The strip-shaped waist hole 10 is a parallel long conduction slot hole, and the strip-shaped waist hole 10 is obliquely conducted to the side surfaces of the cover plate 5 and the bottom plate 6. The shape of the outer mold 4 is a flat circular cylinder, and a mold core 1 is provided in a penetrating manner at the center inside the outer mold 4. An outer mold boss 8 is provided vertically on one side of the outer mold 4. The upper cover plate 5 is provided at the upper end of the outer mold 4, and the bottom plate 6 is provided at the lower end of the outer mold 4. A coil 2 is provided between the outer mold 4 and the mold core 1. The outer contour shapes of the cover plate 5 and the bottom plate 6 are both arc-end rectangular plates. Arc-shaped end edges are symmetrically provided at both ends of the cover plate 5 and the bottom plate 6. The front and rear sides of the cover plate 5 and the bottom plate 6 are both parallel straight edges. The strip-shaped waist hole 10 is provided in a penetrating manner on the arc-shaped end edge. The hook-shaped waist hole is connected to the parallel straight edge. Mold feet 7 are provided at the four corners at the bottom of the bottom plate 6. The arc diameter of the hook-shaped waist hole 9 is the same as the outer diameter of the tensioning screw 3. The diameter of the conduction groove of the hook-shaped waist hole 9 is the same as the outer diameter of the tensioning screw 3. The width of the strip-shaped waist hole 10 is the same as the outer diameter of the tensioning screw 3.

[0019] Implementation example;

[0020] With this L-shaped waist-shaped groove structure for placing the tensioning screw 3, loosen one side of the bolt group appropriately, and directly place the tensioning screw into the open waist-shaped groove from the side of the cover plate 5, or take it out from the open waist-shaped groove. The design of the L-shaped waist-shaped groove not only makes the installation of the screw tensioning convenient, but also can prevent the screw from slipping during the tensioning process, making the tensioning more convenient, fast, time-saving and labor-saving. This tensioning structure device can also avoid frequent disassembly of the bolt group, resulting in wear of the screw thread, extend the service life of the screw, and reduce production and processing costs.

[0021] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cover plate tensioning structure device for a transformer casting coil mold, the coil mold comprises a mold core, an outer mold, a cover plate and a bottom plate, a tensioning screw is provided between the cover plate and the bottom plate, characterized in that: The front and rear side surfaces of the cover plate and the bottom plate are equidistantly provided with a plurality of hook-shaped waist holes in the horizontal direction, and the four oblique corners of the surface of the cover plate and the bottom plate are provided with strip-shaped waist holes. The hook-shaped waist holes and the strip-shaped waist holes are both side conductive waist holes, and the sides of the hook-shaped waist holes and the strip-shaped waist holes are connected with the side surfaces of the adjacent cover plate and the bottom plate. The inner sides of the hook-shaped waist holes and the strip-shaped waist holes are provided with tensioning screws penetrating up and down. The hook-shaped waist hole is an L-shaped side through hole, and the cut edge of the hook-shaped waist hole is provided with a conductive groove vertically in the longitudinal direction. The strip-shaped waist hole is a parallel long conductive groove hole, and the strip-shaped waist hole is obliquely conductive with the side surfaces of the cover plate and the bottom plate.

2. The cover plate tensioning structure device of a transformer casting coil mold according to claim 1 is characterized in that: The outer mold is in the shape of an oblate cylinder, a mold core is provided through the inner center of the outer mold, an outer mold boss is vertically provided on one side of the outer mold, a cover plate is provided at the upper end of the outer mold, a bottom plate is provided at the lower end of the outer mold, and a coil is provided between the outer mold and the mold core.

3. The cover plate tensioning structure device of a transformer casting coil mold according to claim 1, characterized in that: The outer contours of the cover plate and the bottom plate are both arc-ended rectangular plates, and both ends of the cover plate and the bottom plate are symmetrically provided with arc-shaped end edges. The front and rear sides of the cover plate and the bottom plate are both parallel straight edges. Strip waist holes are provided through the arc-shaped end edges, and hook-shaped waist holes are provided on the parallel straight edges.

4. The cover plate tensioning structure device of a transformer casting coil mold according to claim 1, characterized in that: The arc diameter of the hook-shaped waist hole is the same as the outer diameter of the tightening screw, and the diameter of the conducting groove of the hook-shaped waist hole is the same as the outer diameter of the tightening screw.

5. The cover plate tensioning structure device of a transformer casting coil mold according to claim 1, characterized in that: The width of the strip waist hole is the same as the outer diameter of the tightening screw.

6. The cover plate tensioning structure device of a transformer casting coil mold according to claim 1, characterized in that: The bottom of the base plate is provided with mold feet at four corners.

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