CN215619458U - Coil casting mold - Google Patents

Abstract

The utility model provides a coil casting mould which comprises a base, an outer mould, an inner mould, a lower locating ring, a first adjusting structure and the like. The scheme can reduce the types and the number of the dies, thereby greatly reducing the manufacturing and management cost of the dies and realizing the purpose that one die is suitable for multiple coils.

Description

Coil casting mold

Technical Field

The utility model relates to the technical field of transformer production molds, in particular to a coil casting mold.

Background

At present, most of dry-type transformers produced in the whole industry adopt an epoxy resin pouring process. As the market share of dry transformers increases, the production yield is also the water wave ship height. Transformer coils are numerous for the following reasons: 1. the coverage range of the rated capacity of the dry-type transformer is large; 2. due to different application environments, dry-type transformers with the same capacity have different structures; 3. the transformer industry regularly performs cost optimization, resulting in frequent coil size changes.

Because the types (sizes and specifications) of coils of the dry-type transformer are numerous, the types of the moulds for casting the coils are also numerous, the existing casting mould has no universality, and different parts of the whole casting mould need to be redesigned and manufactured when a new coil is cast. For example, it is necessary to use different sizes of outer and inner dies for different coils and a lower retainer ring for fixing the outer and inner dies. This makes the number of casting molds manufactured or purchased by an enterprise per year large, resulting in huge manufacturing, management, and maintenance costs of the molds.

SUMMERY OF THE UTILITY MODEL

The utility model provides a coil casting mold, which aims to improve the universality of the coil casting mold and reduce the production cost.

In order to achieve the above object, the present invention provides a coil casting mold, comprising: a base first fastener; the outer mold first fastening piece is arranged on the base first fastening piece; the inner die first fastening piece is arranged in the outer die first fastening piece, and a pouring cavity provided with a coil is formed in the area between the inner die first fastening piece and the outer die first fastening piece; the lower positioning ring first fastening piece is arranged on the base first fastening piece, and the lower ends of the outer die first fastening piece and the inner die first fastening piece are matched with the lower positioning ring first fastening piece; the first adjusting structure is arranged on the first fastener of the base and used for connecting the first fasteners of the lower positioning rings with different sizes with the first fastener of the base.

Further, the first adjusting structure comprises a plurality of first elongated hole first fastening pieces and a plurality of first fastening pieces, the first elongated hole first fastening pieces extend along the radial direction of the first fastening pieces of the lower positioning ring, and the plurality of first elongated hole first fastening pieces are arranged at intervals along the circumferential direction of the first fastening pieces of the base; the first fastener of lower position circle includes the first fastener of lower annular member and the first fastener of a plurality of lower projections that the interval set up in the first fastener of lower annular member one side, and a plurality of first fasteners of lower projections one-to-one pass a plurality of first rectangular hole first fasteners, and a plurality of first fasteners of lower projections one-to-one are connected.

Further, the lateral wall of external mold first fastener has the opening, and the coil casting mould still includes: the first fastener of the tapping structure is arranged at the opening; and the second adjusting structure is matched with the first fastener of the tapping structure so as to adjust the position of the first fastener of the tapping structure on the first fastener of the base.

Further, the second adjustment structure includes: the second elongated hole first fastening piece is arranged on the base first fastening piece; and the second fastening piece passes through the second elongated hole first fastening piece and is connected with the tapping structure first fastening piece.

Further, the coil casting mold further comprises: the first pressing frame fastening piece comprises a first pressing rod fastening piece and a second pressing rod fastening piece which are arranged in a crossed mode, and presses the upper ends of the outer die fastening piece and the inner die fastening piece; the two ends of the first compression bar fastening pieces are connected with the first base fastening pieces through the first pull bar fastening pieces respectively, and the two ends of the second compression bar fastening pieces are connected with the first base fastening pieces through the first pull bar fastening pieces respectively.

Further, the coil casting mold further comprises a first sealing gasket fastening piece, the first sealing gasket fastening piece is located between the first lower positioning ring fastening piece and the first base fastening piece, and the shape of the first sealing gasket fastening piece is the same as that of the upper surface of the first base fastening piece.

Further, the lateral wall of external mold first fastener has the opening, and the coil casting mould still includes: the first fastener of the tapping structure is arranged at the opening and comprises a first fastener of a tapping part and a first fastener of a blocking part, the first fastener of the tapping part is provided with a plurality of first fasteners of tapping interfaces, at least one part of the first fastener of the blocking part is detachably arranged at the first fastener of the tapping interfaces so as to block or open the first fastener of the tapping interfaces, and the first fastener of the blocking part can adjust the number of the first fasteners of the tapping interfaces blocked in the first fasteners of the tapping interfaces.

Furthermore, the number of the first blocking part fasteners is multiple, and each first blocking part fastener can block one first branch port fastener; the first fastener of shutoff portion is the columnar structure, and the first fastener of shutoff portion can insert in the first fastener of tap hole or extract from the first fastener of tap hole to block up or open the first fastener of tap hole.

Furthermore, the first fastener of the blocking part comprises a cylinder body and a plug, the cylinder body is provided with a threading hole communicated with the pouring cavity, the outer wall of the cylinder body is in sealing fit with the inner wall of the first fastener of the tap port, and the plug is detachably arranged in the cylinder body so as to block or open the threading hole; the first fastener of tap portion is platelike structure, and the lateral wall of the first fastener of tap portion has the first fastener of seal groove, and the coil casting mold still includes the sealing strip, and a part of sealing strip is located the first fastener of seal groove, and sealing strip and open-ended inner wall butt.

Further, the first fastener of tap portion is provided with the first fastener of a plurality of mounting holes at length direction interval, and coil casting mold still includes: the first batten fastening piece is provided with a third strip hole first fastening piece, the third strip hole first fastening piece extends along the length direction of the first tapping part fastening piece, and the third strip hole first fastening piece corresponds to the first fastening pieces of the at least two mounting holes; and the third fastener penetrates through the third elongated hole first fastener and the outer die first fastener, and the third fastener is connected with the corresponding mounting hole first fastener.

Adopt this scheme, to different coils, need use not unidimensional lower position circle, owing to be provided with first regulation structure in this scheme, can all install same base with unidimensional lower position circle like this to improved the commonality of base, need not to change the base, moreover, the equal concrete commonality of pressure frame and tapping structure in this scheme can match not unidimensional centre form, external mold to corresponding coil, consequently improved coil casting die's commonality, reduced manufacturing cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 illustrates a perspective view of a coil casting mold provided by an embodiment of the present invention;

FIG. 2 shows a top view of the base, gasket, and lower cage of FIG. 1;

FIG. 3 shows a cross-sectional view of FIG. 2;

FIG. 4 shows a top view of the base of FIG. 2;

FIG. 5 shows a perspective view of the lower cage of FIG. 2;

FIG. 6 shows a schematic structural view of the press frame of FIG. 1;

FIG. 7 shows a schematic diagram of the tap structure of FIG. 1;

fig. 8 shows a schematic view of the bead of fig. 1.

Wherein the figures include the following reference numerals:

10. a base; 11. a second elongated hole; 12. a first elongated hole; 20. an outer mold; 30. an inner mold; 40. a tapping structure; 41. a tapping portion; 42. a plugging section; 43. dividing an interface; 44. a sealing groove; 45. mounting holes; 50. layering; 51. a third elongated hole; 60. a lower positioning ring; 61. a lower annular member; 62. a lower convex column; 71. a gasket; 73. a pull rod; 80. pressing a frame; 81. a first pressure lever; 82. a second compression bar; 83. a fourth elongated hole; 90. and (4) an upper positioning ring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 8, an embodiment of the present invention provides a coil casting mold, including a base 10; an outer mold 20 disposed on the base 10; the inner die 30 is arranged in the outer die 20, and a pouring cavity provided with a coil is formed in the area between the inner die 30 and the outer die 20; the lower positioning ring 60 is arranged on the base 10, and the lower ends of the outer die 20 and the inner die 30 are matched with the lower positioning ring 60; and the first adjusting structure is arranged on the base 10 and is used for connecting the lower positioning rings 60 with different sizes with the base 10.

Adopt this scheme, to different coils, need use not unidimensional lower position circle 60, owing to be provided with first regulation structure in this scheme, can all install same base 10 with unidimensional lower position circle 60 like this to improve base 10's commonality, need not to change base 10, consequently improved coil casting die's commonality, reduced manufacturing cost.

Specifically, the first adjusting structure includes a plurality of first elongated holes 12 and a plurality of first fastening members, the first elongated holes 12 extend in the radial direction of the lower retainer ring 60, and the plurality of first elongated holes 12 are arranged at intervals in the circumferential direction of the base 10; the lower positioning ring 60 comprises a lower annular part 61 and a plurality of lower convex columns 62 arranged on one side of the lower annular part 61 at intervals, the plurality of lower convex columns 62 penetrate through the plurality of first elongated holes 12 in a one-to-one correspondence manner, and the plurality of first fasteners are connected with the plurality of lower convex columns 62 in a one-to-one correspondence manner. Thus, the first elongated hole 12 can be engaged with the lower protrusion 62 of the lower retainer 60 of different sizes, so that the base 10 can accommodate the lower retainers of different sizes. Of course, the first adjusting structure can also be set as a sliding groove, a sliding rail and other structures capable of realizing position adjustment.

Further, the side wall of the outer mold 20 has an opening, and the coil casting mold further includes: and the tapping structure 40 is arranged at the opening. The coil casting mold further comprises: the second adjustment structure, and the tapping structure 40 cooperate to adjust the position of the tapping portion 41 on the base 10. When the overmold 20 is replaced, the position of the tap structure 40 on the base 10 also needs to be adjusted to accommodate different sized overmold 20. The second adjusting structure is arranged to adjust the position of the shunting structure 40, so that the universality of the shunting structure 40 and the base 10 is further improved.

Specifically, the second adjustment structure includes: the second long hole 11, the second long hole 11 is set in base 10; and a second fastener passing through the second elongated hole 11 and connected to the tap structure 40. Thus, the inner mold 30 and the outer mold 20 can be replaced for coils with different specifications, and the tapping structure 40 is not replaced. The second elongated hole 11 can be matched with outer dies 20 with different sizes, and the structure is low in cost and convenient to adjust. The second elongated hole 11 and the second fastening member may be provided in two or more. Of course, the second adjusting structure can also be set as a sliding groove, a sliding rail and other structures capable of realizing position adjustment.

As shown in fig. 1 and 8, the coil casting mold further includes: the pressing frame 80 comprises a first pressing rod 81 and a second pressing rod 82 which are arranged in a crossed mode, and the pressing frame 80 presses the upper ends of the outer die 20 and the inner die 30; and the two ends of the first pressure lever 81 are respectively connected with the base 10 through one pull rod 73, and the two ends of the second pressure lever 82 are respectively connected with the base 10 through one pull rod 73. The pressing frame 80 with the arrangement can reduce the material consumption and the cost on the premise of ensuring the strength. Wherein, the pull rod 73 can adopt a screw rod, so that the distance between the pressing frame 80 and the base 10 can be adjusted according to the height of the coil.

In this embodiment, the coil casting mold further includes: and the upper positioning ring 90 is arranged below the pressing frame 80, and the upper ends of the outer die 20 and the inner die 30 are matched with the upper positioning ring 90.

Specifically, the first pressure lever 81 and the second pressure lever 82 are both provided with fourth elongated holes 83, and the plurality of pull rods 73 respectively penetrate into the corresponding fourth elongated holes 83. In this way, the position of the pull rod 73 in the fourth elongated hole 83 can be adjusted as required, so that coils with different sizes can be matched, and the universality of the pressing frame 80 is improved.

In this embodiment, the coil casting mold further includes a sealing gasket 71, and the sealing gasket 71 is located between the lower retainer 60 and the base 10, so that the sealing effect can be improved. The shape of the gasket 71 is the same as the shape of the upper surface of the base 10. That is, the gasket 71 is provided with elongated holes corresponding to the first elongated hole 12 and the second elongated hole 11.

Further, the tapping structure 40 comprises a tapping portion 41 and a blocking portion 42, the tapping portion 41 has a plurality of tapping ports 43, at least a part of the blocking portion 42 is detachably disposed at the tapping ports 43 to block or open the tapping ports 43, wherein the blocking portion 42 can adjust the number of the tapping ports 43 blocked out of the plurality of tapping ports 43.

The plurality of branch interfaces 43 are distributed at different positions of the branch part 41, the branch interfaces 43 are used for reserving wiring positions, and the branch interfaces 43 are through holes and are communicated with the pouring cavity. One block portion 42 may be provided to block one sub port 43 or to block a plurality of sub ports 43. The blocking portion 42 may be provided in one or more as needed. The blocking portion 42 may be an integral structure, and the blocking portion 42 integrally moves to block or open the sub-port 43; alternatively, the blocking portion 42 may be a separate structure, and a part of the structure of the blocking portion 42 may be moved away from the tap port 43 or moved to the tap port 43, so as to open or block the tap port 43. In this application, blocking the sub-port 43 means that the sub-port 43 cannot communicate with the outside of the outer mold 20; opening the sub-joint 43 means that the whole area of the sub-joint 43 is not blocked, or one part of the sub-joint 43 is blocked and the other part can still communicate with the outside of the outer mold 20.

By adopting the scheme, when the arrangement of the tapping ports 43 needs to be correspondingly adjusted for different coils, the number and the positions of the tapped ports 43 which are plugged are adjusted through the plugging part 42, and the tapped ports 43 which are not plugged are the tapped ports 43 which need to be reserved, so that the tapping structure 40 does not need to be replaced for different coils, the universality of the tapping structure 40 and a coil casting mold is improved, the manufacturing, management and maintenance cost of the mold is reduced, and the production cost is reduced.

In the present embodiment, the blocking portion 42 is plural, and each blocking portion 42 can block one sub-port 43; the blocking portion 42 has a columnar structure, and the blocking portion 42 can be inserted into the tap port 43 or pulled out from the tap port 43 to block or open the tap port 43. This way, the structure is simple, the operation is convenient, and the blocking portion 42 can be set to be a solid structure.

Alternatively, in another embodiment not shown, the blocking portion 42 includes a cylinder body and a plug, the cylinder body has a threading hole communicated with the pouring cavity, the threading hole is used for threading a cable connected with the coil, the outer wall of the cylinder body is in sealing fit with the inner wall of the tap 43 (it can also be understood that the cylinder body is inserted into the tap 43), and the plug is detachably disposed in the cylinder body (i.e. a part of the structure of the blocking portion 42 is detachably disposed at the tap 43) to block or open the threading hole. When the threading hole is blocked, the branch port 43 is blocked by the blocking and the barrel together, namely the branch port 43 is blocked or opened by blocking or opening the threading hole.

Specifically, the tap part 41 is a plate-shaped structure, a side wall of the tap part 41 is provided with a sealing groove 44, the coil casting mold further comprises a sealing strip, a part of the sealing strip is located in the sealing groove 44, and the sealing strip abuts against an inner wall of the opening. The provision of the tap 41 in a plate-like configuration facilitates processing. Through setting up seal groove 44 and sealing strip, can improve the sealed effect of mould, avoid leaking when the pouring.

In this embodiment, the tapping portion 41 is provided with a plurality of mounting holes 45 at intervals in the length direction, and the coil casting mold further includes: the pressing strip 50 is provided with a third long strip hole 51, the third long strip hole 51 extends along the length direction of the tapping part 41, and the third long strip hole 51 corresponds to the at least two mounting holes 45; and a third fastening member, which passes through the third elongated hole 51 and the outer die 20 and is connected with the corresponding mounting hole 45. Thus, the external mold 20 and the tap part 41 can be reliably connected through the compression strip 50, and the sealing effect is improved. When different types of coils are poured, the inner die 30 and the outer die 20 need to be replaced, the third long-strip holes 51 can correspond to connecting holes in the outer dies 20 with different sizes conveniently, assembly is facilitated, and the application range is widened. The number of the third elongated holes 51 is plural, the plural third elongated holes 51 are arranged at intervals along the length direction of the tap portion 41 (i.e., the axial direction of the coil), and the number of the third fastening members is plural. The coil, the tapping structure 40 and the bead 50 are all arranged vertically.

This scheme mainly improves to the numerous current situation of dry-type transformer coil casting mold quantity, optimizes the spare part design of mould, increases the application scope of mould, all can use to circular, long circle, square casting coil, reduces mould kind and quantity to reduce mould manufacturing and administrative cost by a wide margin, realize the purpose that a mould is applicable to multiple coil.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A coil casting mold, comprising:

a base (10);

an outer mold (20) arranged on the base (10);

the inner die (30) is arranged in the outer die (20), and a pouring cavity provided with a coil is formed in the area between the inner die (30) and the outer die (20);

the lower positioning ring (60) is arranged on the base (10), and the lower ends of the outer die (20) and the inner die (30) are matched with the lower positioning ring (60);

the first adjusting structure is arranged on the base (10) and used for connecting the lower positioning rings (60) with different sizes with the base (10).

2. Coil casting mold according to claim 1,

the first adjusting structure comprises a plurality of first elongated holes (12) and a plurality of first fastening pieces, the first elongated holes (12) extend along the radial direction of the lower positioning ring (60), and the first elongated holes (12) are arranged at intervals along the circumferential direction of the base (10);

the lower positioning ring (60) comprises a lower annular part (61) and a plurality of lower convex columns (62) arranged on one side of the lower annular part (61) at intervals, the lower convex columns (62) penetrate through the first strip-shaped holes (12) in a one-to-one correspondence mode, and the first fasteners are connected with the lower convex columns (62) in a one-to-one correspondence mode.

3. The coil casting mold according to claim 1, wherein the side wall of the outer mold (20) has an opening, the coil casting mold further comprising:

a tapping structure (40) arranged at the opening;

a second adjustment structure cooperating with the tap structure (40) to adjust the position of the tap structure (40) on the base (10).

4. The coil casting mold of claim 3, wherein the second adjustment structure comprises:

a second elongated hole (11), said second elongated hole (11) being provided on said base (10);

a second fastener passing through the second elongated hole (11) and connected with the tap structure (40).

5. The coil casting mold of claim 1, further comprising:

the pressing frame (80) comprises a first pressing rod (81) and a second pressing rod (82) which are arranged in a crossed mode, and the pressing frame (80) presses the upper ends of the outer die (20) and the inner die (30);

the two ends of the first pressure lever (81) are respectively connected with the base (10) through one pull rod (73), and the two ends of the second pressure lever (82) are respectively connected with the base (10) through one pull rod (73).

6. The coil casting mold according to claim 1, further comprising a sealing gasket (71), wherein the sealing gasket (71) is located between the lower retainer (60) and the base (10), and the shape of the sealing gasket (71) is the same as the shape of the upper surface of the base (10).

7. The coil casting mold according to claim 1, wherein the side wall of the outer mold (20) has an opening, the coil casting mold further comprising:

a tapping structure (40) disposed at the opening, the tapping structure (40) including a tapping portion (41) and a blocking portion (42), the tapping portion (41) having a plurality of tapping ports (43), at least a portion of the blocking portion (42) being detachably disposed at the tapping ports (43) to block or open the tapping ports (43), wherein the blocking portion (42) can adjust the number of the tapping ports (43) blocked among the plurality of tapping ports (43).

8. The coil casting mold according to claim 7, wherein the blocking portion (42) is plural, and each of the blocking portions (42) blocks one of the tap ports (43); the blocking part (42) is of a columnar structure, and the blocking part (42) can be inserted into the branch interface (43) or pulled out of the branch interface (43) to block or open the branch interface (43).

9. Coil casting mold according to claim 7,

the blocking part (42) comprises a cylinder body and a plug, the cylinder body is provided with a threading hole communicated with the pouring cavity, the outer wall of the cylinder body is in sealing fit with the inner wall of the branch port (43), and the plug is detachably arranged in the cylinder body so as to block or open the threading hole;

the coil casting mold is characterized in that the splicing part (41) is of a plate-shaped structure, a sealing groove (44) is formed in the side wall of the splicing part (41), the coil casting mold further comprises a sealing strip, one part of the sealing strip is located in the sealing groove (44), and the sealing strip is abutted to the inner wall of the opening.

10. The coil casting mold according to claim 7, wherein the tap portion (41) is provided with a plurality of mounting holes (45) at intervals in a length direction, the coil casting mold further comprising:

the pressing strip (50) is provided with a third long strip hole (51), the third long strip hole (51) extends along the length direction of the split part (41), and the third long strip hole (51) corresponds to at least two mounting holes (45);

a third fastener passing through the third elongated hole (51), the outer die (20), and the third fastener being connected with the corresponding mounting hole (45).

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