Insulating cylinder epoxy resin pouring mold

Abstract

The utility model discloses an insulating cylinder epoxy resin pouring mold which comprises a mold sleeve of a hollow sleeve structure with a first cavity through hole in the side face. The die sleeve, the die core, the upper cover plate and the lower cover plate are combined to form a pouring cavity; wherein the die sleeve is arranged outside the die core in a sleeving mode with a gap and forms a pouring cavity, a second cavity through hole is formed in the die core, the diameter and the position of the second cavity through hole are matched with those of the first cavity through hole and those of the second cavity through hole, the upper cover plate and the lower cover plate are both cover plates with through holes in the centers, and the through hole of the upper cover plate is sealed through a pressurizing cover plate. The through hole of the lower cover plate is normally open, the mold core is of a hollow structure, a pouring gate is formed in the pressurizing cover plate, and the pouring gate is used for pouring the mold into the pouring cavity. The problem of a pouring mold with a side hole is solved.

Description

Technical Field

[0001] The present application relates to an epoxy resin casting mould for an insulating tube, belonging to the technical field of epoxy resin moulds. Background Art

[0002] The insulating cylinder is a commonly used insulating support part in the high-voltage switch industry, and its structure is required to have high mechanical strength, electrical and insulation properties. The epoxy resin casting mold refers to the casting obtained by cooling and solidifying the epoxy resin mixture from the gate mold cavity. Generally speaking, the insulating cylinder epoxy resin casting parts are straight cylinders without through holes on the side, but with the development of the high-voltage switch industry, various forms of insulating parts have begun to appear with insulating cylinders with through holes on the side. For the insulating cylinder with through holes on the side, the existing technology uses the original mold to cast it into a straight cylinder part, and then uses the CNC machining method to mill out the structure of the conical side through hole, but the internal fillet cannot be processed by CNC, and manual grinding is difficult and has low precision, which seriously affects product development. Therefore, a new insulating cylinder epoxy resin casting mold has become a problem that technicians in this field urgently need to solve. Utility Model Content

[0003] According to one aspect of the present application, there is provided a casting cavity formed by a mold sleeve, a mold core, and upper and lower cover plates. A cavity through hole is opened at a side position, and the cavity through hole is sealed with an outer core and an inner core. After casting, a casting mold with side holes is formed, and the casting cavity can be assembled into a cylinder, a cone or other part shapes according to part requirements.

[0004] The present application provides an epoxy resin casting mold for an insulation tube, comprising:

[0005] The mold sleeve has a hollow sleeve structure with a first cavity through hole on the side;

[0006] The mold sleeve is combined with the mold core, the upper cover plate and the lower cover plate to form a casting cavity;

[0007] Among them, the mold sleeve is arranged outside the mold core with a gap and forms a casting cavity. The mold core is provided with a second cavity through hole, and the second cavity through hole is adapted to the diameter and position of the first cavity through hole and the second cavity through hole. The upper cover plate and the lower cover plate are both cover plates with a through hole in the center, and the through hole of the upper cover plate is sealed by a pressure cover plate, and a gate is provided on the pressure cover plate, and the gate is connected to the casting cavity. The mold core is a bottomless hollow structure, and the diameter of the through hole of the lower cover plate is adapted to the hollow part of the mold core.

[0008] Optionally, an outer core is disposed inside the first cavity through hole, and an inner core is disposed inside the second cavity through hole, and the outer core is connected to the inner core to seal the first cavity through hole and the second cavity through hole.

[0009] Optionally, one end of the outer core is connected to the mold sleeve, a core-pulling bolt is further provided in the middle of the outer core, and the core-pulling bolt is used to rotate and pull out the outer core from the workpiece after casting, and the other end of the outer core is connected to the inner core;

[0010] A handle is provided at one end of the inner core and the outer core, and the handle is used to extract the inner core from the workpiece after casting.

[0011] Optionally, a twist rod is provided on the nut of the core-pulling bolt, and the twist rod is used to rotate the core-pulling bolt.

[0012] Optionally, a plurality of upper insert sleeves are arranged on the upper cover plate, and the upper insert sleeves extend through the upper cover plate into the interior of the casting cavity, an upper positioning bolt is arranged inside each of the upper insert sleeves, and an insert is arranged at the bottom of the upper insert sleeve;

[0013] The lower cover plate is provided with a plurality of lower insert sleeves, the lower insert sleeves pass through the lower cover plate and extend into the casting cavity, the lower insert sleeves are provided with lower positioning bolts, and the top of the lower insert sleeves is provided with the insert;

[0014] The insert is used to be inserted into the workpiece to form a non-detachable connecting piece.

[0015] Optionally, the outer sleeve of the nut of the core-pulling bolt is provided with a bracket, and one end of the bracket away from the nut of the core-pulling bolt is also connected to the outer side of the mold sleeve.

[0016] Optionally, a first sealing ring is provided between the outer core and the mold sleeve;

[0017] A second sealing ring is sleeved at the connection between the inner core and the outer core.

[0018] Optionally, a pressing plate is provided at one end of the outer core close to the mold sleeve, and the pressing plate is used to press the outer core.

[0019] The beneficial effects of this application include:

[0020] 1) The mold sleeve, mold core, upper cover plate and lower cover plate provided in the present application are combined to form a casting cavity, and the casting cavity can be sleeved into a cylindrical, conical or other part structure according to the design requirements of the workpiece;

[0021] 2) The inner core and the outer core provided in the present application block the first cavity through hole and the second cavity through hole opened on the sides of the mold sleeve and the mold core. The inner core and the outer core can be made into a chamfered structure according to design requirements, so that the side holes of the casting cavity can be directly cast to form side holes with chamfers.

[0022] 3) The core-pulling bolt provided in the present application is arranged inside the outer core, and the outer core can be easily removed by rotating the twist rod, and then the inner core can be taken out from the handle arranged in the hollow area of ​​the mold core by pushing, so that the parts can be easily demolded. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the pouring mold structure;

[0024] Figure 2 is a schematic diagram of the cross section of the casting mold;

[0025] Figure 3 It is the axial schematic diagram of the core-pulling bolt structure;

[0026] Figure 4 It is a radial schematic diagram of the core-pulling bolt structure;

[0027] List of parts and reference numerals: 1. mold sleeve; 2. mold core; 3. upper cover plate; 4. lower cover plate; 5. casting cavity; 6. first cavity through hole; 7. second cavity through hole; 8. pressure cover plate; 9. gate; 10. inner core; 11. outer core; 12. core-pulling bolt; 13. twist rod; 14. upper insert sleeve; 15. lower insert sleeve; 16. upper positioning bolt; 17. lower positioning bolt; 18. insert; 19. bracket; 20. first sealing sleeve; 21. second sealing ring; 22. pressure plate; 23. handle. DETAILED DESCRIPTION

[0028] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0029] The present application provides an epoxy resin casting mold for an insulation barrel, comprising: a mold sleeve 1, a hollow sleeve structure having a first cavity through hole 6 on the side thereof;

[0030] The mold sleeve 1 is combined with the mold core 2, the upper cover plate 3 and the lower cover plate 4 to form a casting cavity 5;

[0031] Among them, the mold sleeve 1 is arranged on the outside of the mold core 2 with a gap and forms a casting cavity 5. The mold core 2 is provided with a second cavity through hole 7, and the second cavity through hole 7 is adapted to the diameter and position of the first cavity through hole 6 and the second cavity through hole 7. The upper cover plate 3 and the lower cover plate 4 are both cover plates with a through hole in the center. The through hole of the upper cover plate 4 is sealed by a pressure cover plate 8. A gate 9 is provided on the pressure cover plate 8, and the gate 9 is connected to the casting cavity 5. The mold core 2 is a bottomless hollow structure, and the through hole diameter of the lower cover plate 4 is adapted to the hollow part of the mold core 2.

[0032] It should be noted that the casting cavity 5 can be assembled and designed into a conical shape, a bead shape or other shapes according to the requirements of the parts. By changing the shapes of the mold sleeve 1 and the mold core 2 and changing the combined gap, different part structures are formed. Then, the upper cover plate 3 and the lower cover plate 4 are closed and assembled up and down to form the casting cavity 5. The casting liquid enters the casting cavity 5 from the gate 9 to form a cast part.

[0033] Among them, the first cavity through hole 6 and the second cavity through hole 7 are arranged on the sides of the mold sleeve 1 and the mold core 2, and the two through holes are positioned relative to each other and have the same diameter. The inner diameter of the first cavity through hole 6 and the second cavity through hole 7 is the same as the diameter of the side hole on the designed part. By blocking the casting hole formed by the first cavity through hole 6 and the second cavity through hole 7, the side hole structure of the designed part is cast and formed in one time.

[0034] An outer core 10 is disposed inside the first cavity through hole 6 , and an inner core 11 is disposed inside the second cavity through hole 7 . The outer core 10 is connected to the inner core 11 to seal the first cavity through hole 6 and the second cavity through hole 7 .

[0035] One end of the outer core 11 is connected to the mold sleeve 1, and a core-pulling bolt 12 is also provided in the middle of the outer core 11. The core-pulling bolt 12 is used to rotate and pull out the outer core 11 from the workpiece after casting. The other end of the outer core 11 is connected to the inner core 10; a first sealing ring 20 is sleeved between the outer core 11 and the mold sleeve 1;

[0036] A pressing plate 22 is provided near the outer core 11 and the mold sleeve 1 , and the pressing plate 22 is used to press the outer core 11 .

[0037] A handle 23 is provided at one end of the inner core 10 away from the outer core 11 , and the handle 23 is used to extract the inner core 10 from the workpiece after casting.

[0038] A second sealing ring 21 is sleeved at the connection between the inner core 10 and the outer core 11 .

[0039] It is worth noting that the outer sides of the inner core 10 and the outer core 11 can be chamfered so that the side holes of the casting cavity 5 are directly chamfered after casting;

[0040] In this embodiment, the outer core 11 is a truncated cone with a concave cross section, and the inner core 10 is a truncated cone with a convex cross section. The boss of the inner core 10 abuts against one end of the outer core 11 with a circular hole. The edge of the truncated cone surface of the outer core 11 is connected to the outer side of the mold sleeve 1 through a hexagonal bolt M10, and the pressure plate 22 is provided at the connection between the edge of the outer core 11 and the mold sleeve 1. The hexagonal bolt M10 is used to press the pressure plate 22 to make the connection of the outer core 11 more tightly.

[0041] The outer core 11 is also provided with a plurality of guide pins, which are used to connect the outer core 11 with the mold sleeve 1.

[0042] A twist rod 13 is arranged on the nut of the core-pulling bolt 12, and the twist rod 13 is used to rotate the core-pulling bolt 12. The twist rod 13 is in an elongated strip shape so that it can be inserted into the channel at the center of the nut of the core-pulling bolt 12. The core-pulling bolt 12 can be easily rotated during demoulding, so that the outer core 11 can be easily demoulded.

[0043] The outer sleeve of the nut of the core-pulling bolt 12 is provided with a bracket 19 , and one end of the bracket 19 away from the nut of the core-pulling bolt 12 is also connected to the outer side of the mold sleeve 1 .

[0044] The upper cover plate 3 is provided with a plurality of upper insert sleeves 14, the upper insert sleeves 14 pass through the upper cover plate 3 and extend into the casting cavity 5, each of the upper insert sleeves 14 is provided with an upper positioning bolt 16, and an insert 18 is provided at the bottom of the upper insert sleeve 14;

[0045] A plurality of lower insert sleeves 15 are provided on the lower cover plate 4, and the lower insert sleeves 15 pass through the lower cover plate 4 and extend into the casting cavity 5. A lower positioning bolt 17 is provided inside the lower insert sleeve 15, and the insert 18 is provided on the top of the lower insert sleeve 15. In the present embodiment, a plurality of the upper positioning bolts 16 are arranged in a circular array, and a plurality of the lower positioning bolts 17 are arranged in a circular array.

[0046] The insert 18 is used to be inserted into the workpiece to form a non-detachable connecting piece.

[0047] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. An epoxy resin casting mold for an insulation tube, characterized in that: include: A mold sleeve (1) having a hollow sleeve structure with a first cavity through hole (6) on the side surface; The mold sleeve (1), the mold core (2), the upper cover plate (3) and the lower cover plate (4) are combined to form a casting cavity (5); The mold sleeve (1) is sleeved with a gap outside the mold core (2) to form a casting cavity (5); a second cavity through hole (7) is provided on the mold core (2); the diameter and position of the second cavity through hole (7) are adapted to those of the first cavity through hole (6); the upper cover plate (3) and the lower cover plate (4) are both cover plates with a through hole in the center; the through hole of the upper cover plate (3) is sealed by a pressure cover plate (8); a gate (9) is provided on the pressure cover plate (8); the gate (9) is connected to the casting cavity (5); the mold core (2) is a bottomless hollow structure; the diameter of the through hole of the lower cover plate (4) is adapted to the hollow part of the mold core (2).

2. The epoxy resin casting mold for an insulation tube according to claim 1, characterized in that: An outer core (11) is arranged inside the first cavity through hole (6), and an inner core (10) is arranged inside the second cavity through hole (7); the outer core (11) is connected to the inner core (10) to seal the first cavity through hole (6) and the second cavity through hole (7).

3. The epoxy resin casting mold for an insulation tube according to claim 2, characterized in that: One end of the outer core (11) is connected to the mold sleeve (1), and a core-pulling bolt (12) is also provided in the middle of the outer core (11). The core-pulling bolt (12) is used to rotate and pull out the outer core (11) from the workpiece after casting. The other end of the outer core (11) is connected to the inner core (10); A handle (23) is provided at one end of the inner core (10) away from the outer core (11), and the handle (23) is used to extract the inner core (10) from the workpiece after casting.

4. The epoxy resin casting mold for an insulation tube according to claim 3, characterized in that: A twist rod (13) is arranged on the nut of the core-pulling bolt (12), and the twist rod (13) is used to rotate the core-pulling bolt (12).

5. The epoxy resin casting mold for an insulation tube according to claim 4, characterized in that: A plurality of upper insert sleeves (14) are arranged on the upper cover plate (3), and the upper insert sleeves (14) pass through the upper cover plate (3) and extend into the interior of the casting cavity (5), and an upper positioning bolt (16) is arranged inside each of the upper insert sleeves (14), and an insert (18) is arranged at the bottom of the upper insert sleeve (14); A plurality of lower insert sleeves (15) are arranged on the lower cover plate (4), and the lower insert sleeves (15) pass through the lower cover plate (4) and extend into the interior of the casting cavity (5). A lower positioning bolt (17) is arranged inside the lower insert sleeve (15), and the insert (18) is arranged on the top of the lower insert sleeve (15); The insert (18) is used for being embedded in a workpiece to form a non-detachable connecting piece.

6. The epoxy resin casting mold for an insulation tube according to claim 5, characterized in that: The outer sleeve of the nut of the core-pulling bolt (12) is provided with a bracket (19), and one end of the bracket (19) away from the nut of the core-pulling bolt (12) is also connected to the outer side of the mold sleeve (1).

7. The epoxy resin casting mold for an insulation tube according to claim 2, characterized in that: A first sealing ring (20) is sleeved between the outer core (11) and the mold sleeve (1); A second sealing ring (21) is sleeved at the connection between the inner core (10) and the outer core (11).

8. The epoxy resin casting mold for an insulation tube according to claim 2, characterized in that: A pressing plate (22) is provided at one end of the outer core (11) close to the mold sleeve (1), and the pressing plate (22) is used to press the outer core (11).

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