Split epoxy mold gate

Abstract

The utility model relates to a kind of separate epoxy mould sprue, including sprue bush and support seat, the sprue bush includes material receiving disc and pouring pipe, pouring pipe extends vertically and is fixedly connected to the bottom surface of material receiving disc, the pouring channel of pouring pipe is communicated at the top surface of material receiving disc, the support seat can be detachably installed on epoxy mould, support seat has the insertion hole for pouring pipe insertion, the material receiving disc is set on support seat, pouring pipe passes through insertion hole and is communicated with the pouring port of epoxy mould. The utility model uses the separate design of support seat and sprue bush, support seat and epoxy mould are fixedly connected for supporting sprue bush, just need to place sprue bush on support seat, make pouring pipe insert into the pouring port of epoxy mould, epoxy resin can be poured into epoxy mould, it is convenient to use. The pouring pipe of sprue bush is integral structure, without gap, thus avoid the problem that epoxy resin leaks from gap.

Description

Technical Field

[0001] This utility model relates to the field of epoxy insulator casting technology, specifically to a separate epoxy mold gate. Background Technology

[0002] Epoxy pot insulators are important components in high-voltage switchgear. All insulating products are manufactured using a mold casting process, and the casting process for epoxy products is strictly and complexly controlled.

[0003] In existing insulator casting, a square sprue sleeve is installed on the sprue of the casting mold. This square sprue sleeve is typically a two-part structure, with the two halves joined together by screws to form the square sprue sleeve. The square sprue sleeve is then bolted to the casting mold. When the two halves are joined, a square pouring channel is formed between them. This channel aligns with the sprue at the top of the casting mold, allowing epoxy resin to be poured into the mold.

[0004] Existing square sprue bushings have a two-part structure with gaps between the two halves. This allows epoxy resin to easily seep out through these gaps during pouring, resulting in waste. Secondly, once the mold cavity is full, epoxy resin overflows from the square gating channel. Since existing sprue bushings lack a catch, the overflowing resin easily gets onto the bolts, making cleaning difficult. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a separate epoxy mold gate.

[0006] This utility model is achieved through the following technical solution: a separable epoxy mold gate, including a gate sleeve and a support base. The gate sleeve includes a receiving tray and a pouring pipe. The pouring pipe extends vertically and is fixed to the bottom surface of the receiving tray. The pouring channel of the pouring pipe is connected to the top surface of the receiving tray. The support base is detachably installed on the epoxy mold. The support base has an insertion hole for inserting the pouring pipe. The receiving tray is placed on the support base. The pouring pipe passes through the insertion hole and is connected to the pouring gate of the epoxy mold.

[0007] As an optimization, the casting pipe is located at the center of the bottom surface of the receiving tray.

[0008] As an optimization, the top surface of the receiving tray is provided with a boss, and the top surface of the boss is provided with a funnel-shaped pouring hole that communicates with the pouring channel.

[0009] As an optimization, the pouring channel has a cone-shaped structure with a diameter that is larger at the top and smaller at the bottom.

[0010] As an optimization, the support base includes a support sleeve and locking members fixed to both sides of the support sleeve. The support sleeve is placed on the epoxy mold, and the two locking members are distributed along the axial direction of the epoxy mold, forming a clamping space between the two locking members to hold the epoxy mold.

[0011] As an optimization, the locking component includes a horizontal fixing plate fixedly connected to the support sleeve, a vertical fixing plate fixedly connected to the bottom of the horizontal fixing plate, and a fastening bolt threadedly connected to the vertical fixing plate. The fastening bolt extends along the axial direction of the epoxy mold and presses against the epoxy mold.

[0012] As an optimization, a top block is rotatably mounted on the end of the fastening bolt near the epoxy mold, and a rubber pad is fixed to the end face of the top block away from the fastening bolt.

[0013] As an optimization, the support sleeve includes a coaxial outer sleeve and an inner sleeve. A support ring is fixed to the top of the inner sleeve. The outer diameter of the support ring is larger than the inner diameter of the outer sleeve. Two positioning bolts are threaded onto the outer wall of the outer sleeve. The two positioning bolts are symmetrically distributed around the center of the outer sleeve and press against the inner sleeve.

[0014] The beneficial effects of this utility model are as follows: 1. This solution adopts a separate design for the support base and the sprue sleeve. The support base is fixed to the epoxy mold to support the sprue sleeve. Simply place the sprue sleeve on the support base, insert the gating pipe into the gating port of the epoxy mold, and epoxy resin can be poured into the epoxy mold. It is convenient to use. The gating pipe of the sprue sleeve is a one-piece structure without gaps, thus avoiding the problem of epoxy resin leakage from gaps.

[0015] 2. Because the top of the pouring pipe is equipped with a receiving tray, when the mold cavity is filled with epoxy resin and overflows, the overflowing epoxy resin is collected by the receiving tray, which prevents the epoxy resin from leaving to the outside or dripping onto the epoxy mold, causing inconvenience in cleaning.

[0016] 3. The gating channel adopts a cone-shaped structure design, which greatly reduces the transition area between the epoxy resin molded in the gating channel and the epoxy resin molded in the casting mold. Due to the small connection area, the connection strength is low. Therefore, when the mold is removed, it is easier to break at the transition connection between the two epoxy resin parts, and it is easier to remove the epoxy resin part molded in the gating channel. No machine cutting is required, saving time and effort and improving production efficiency.

[0017] 4. The support base locks the epoxy mold with locking parts on both sides, which facilitates installation and disassembly and makes it easy to use.

[0018] 5. The support sleeve of the support base adopts a separate structure with an outer sleeve and an inner sleeve connected together, and the two are fastened by positioning bolts. The height of the inner sleeve can be adjusted up and down along the outer sleeve, which facilitates the adjustment of the depth of the lower end of the casting pipe inserted into the casting port, so that the casting pipe can seal the casting port and prevent epoxy resin from overflowing from the casting port, making it flexible in use. Attached Figure Description

[0019] Figure 1 This is a front view of the present utility model; Figure 2 This is a side sectional view of the present invention; Figure 3 for Figure 2 Enlarged view of part A; Figure 4 The front sectional view, side sectional view, and top view of the sprue bushing; Figure 5 This is a schematic diagram showing the connection between the fastening bolts and the top block; As shown in the figure: 1. Epoxy mold; 11. Punch; 12. Die; 13. Sprue; 2. Sprue sleeve; 21. Receiving tray; 22. Sprue pipe; 23. Sprue channel; 24. Boss; 25. Trumpet-shaped sprue; 3. Support base; 4. Support sleeve; 41. Outer sleeve; 42. Inner sleeve; 43. Insertion hole; 44. Support ring; 45. Positioning bolt; 5. Locking component; 51. Horizontal fixing plate; 52. Vertical fixing plate; 53. Fastening bolt; 6. Top block; 7. Rubber pad; 8. Connecting seat; 9. Clamping block. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0021] like Figures 1-5 As shown, a split epoxy mold gate includes a gate sleeve 2 and a support base 3.

[0022] The epoxy mold 1 typically includes a concave mold 12 and a convex mold 11, which are fixed together by bolts to form the epoxy mold 1. After the concave mold 12 and the convex mold 11 are fixed, a casting cavity with the same shape as the basin insulator is formed between them. Furthermore, the top of the existing epoxy mold 1 is usually provided with a horizontal platform surface for stable placement of the sprue sleeve, and a sprue port 13 communicating with the casting cavity is opened on the horizontal platform surface. The mold structure shown in the quick-assembly basin insulator casting mold disclosed in patent CN215703397U is a common existing epoxy mold 1 structure, and therefore will not be described in detail.

[0023] The sprue sleeve 2 of this utility model includes a receiving tray 21 and a pouring pipe 22. The pouring pipe 22 extends vertically and is fixed to the bottom surface of the receiving tray 21, and the pouring channel 23 of the pouring pipe 22 communicates with the top surface of the receiving tray 21. The support base 3 is detachably installed on the epoxy mold 1, and the support base 3 has an insertion hole 43 for inserting the pouring pipe 22. During pouring, the receiving tray 21 is placed on the support base 3, and the pouring pipe 22 passes through the insertion hole 43 and communicates with the pouring port 13 of the epoxy mold 1.

[0024] During casting, first, the support base 3 is fixedly installed on the horizontal platform at the top of the epoxy mold 1 to support the receiving tray 21 of the sprue sleeve 2. Then, the sprue sleeve 2 is placed on the support base 3, so that the casting pipe 22 passes through the insertion hole 43 and is inserted into the casting port 13 at the top of the epoxy mold 1, and epoxy resin can be poured into the epoxy mold 1. It is convenient to use.

[0025] Specifically, the support base 3 includes a support sleeve 4 and locking members 5 fixed to both sides of the support sleeve 4. The support sleeve 4 is placed on the epoxy mold 1 and extends vertically. The two locking members 5 are distributed along the axial direction of the epoxy mold 1, forming a clamping space between them. During casting, the support sleeve 4 of the support base 3 is placed on the horizontal platform of the epoxy mold 1, and then the epoxy mold 1 is locked and fixed along the axial direction by the locking members 5 on both sides, thus achieving fixed installation of the support base 3.

[0026] The support sleeve 4 described in this embodiment includes a coaxial outer sleeve 41 and an inner sleeve 42. A support ring 44 is fixedly connected to the top of the inner sleeve 42. The outer diameter of the support ring 44 is larger than the inner diameter of the outer sleeve 41. Two positioning bolts 45 are threaded onto the outer wall of the outer sleeve 41. The two positioning bolts 45 are symmetrically distributed around the center of the outer sleeve 41 and press against the inner sleeve 42.

[0027] Both the outer sleeve 41 and the inner sleeve 42 are rectangular tubes. The outer diameter of the inner sleeve 42 matches the inner diameter of the outer sleeve 41, allowing the inner sleeve 42 to move up and down along the outer sleeve 41. The inner hole of the inner sleeve 42 is the insertion hole 43 of the support base 3. The diameter of the insertion hole 43 is larger than the diameter of the top pouring port 13 of the epoxy mold 1 and larger than the outer diameter of the pouring pipe 22, allowing the pouring pipe 22 to pass through the insertion hole 43 and be inserted into the pouring port 13. The support ring 44 is a rectangular ring structure that serves as a limit. When the support ring 44 is placed on the outer sleeve 41, it represents the maximum downward movement distance of the inner sleeve 42, at which point the height of the support sleeve 4 is at its lowest. Two positioning bolts 45 are screwed onto the left and right side walls or the front and rear side walls of the outer sleeve 41. Once the position of the inner sleeve 42 moving up and down along the outer sleeve 41 is determined, the two positioning bolts 45 are symmetrically arranged to tighten the inner sleeve 42, thereby positioning and fixing the inner sleeve 42. The height of the support for the gate sleeve 2 can be easily adjusted by the up-and-down movement of the inner sleeve 42, thereby adjusting the depth of the lower end of the pouring pipe 22 inserted into the pouring port 13. This allows the gate sleeve 2 to be stably mounted on the support base 3, and the lower part of the pouring pipe 22 to seal the pouring port 13, preventing epoxy resin from overflowing from the pouring port 13. This makes it flexible to use.

[0028] The locking component 5 described in this embodiment includes a horizontal fixing plate 51 fixedly connected to the support sleeve 4. A vertical fixing plate 52 is fixedly connected to the bottom of the horizontal fixing plate 51. A fastening bolt 53 is threadedly connected to the vertical fixing plate 52. The fastening bolt 53 extends along the axial direction of the epoxy mold 1 and presses against the epoxy mold 1.

[0029] The horizontal fixing plate 51 is fixed to the lower end of the outer wall of the outer sleeve 41, and the vertical fixing plate 52 is fixed to the end of the horizontal fixing plate 51 away from the outer sleeve 41. After the support base 3 is installed, the distance between the vertical fixing plate 52 and the epoxy mold 1 should be 2 to 3 times the thickness of the concave mold 12 or convex mold 11 of the epoxy mold 1. That is, when the epoxy mold 1 is demolded, this distance should be sufficient to allow the concave mold 12 or convex mold 11 to be separated and removed axially.

[0030] When installing the support base 3, the support sleeve 4 is placed on the horizontal platform of the epoxy mold 1. One locking element 5 is located on one side of the concave mold 12 of the epoxy mold 1, and the other locking element 5 is located on one side of the convex mold 11 of the epoxy mold 1. The fastening bolts 53 of the two locking elements 5 respectively tighten the concave mold 12 and the convex mold 11, realizing the detachable and fixed installation of the support base 3, which is convenient to use.

[0031] Preferably, a top block 6 is rotatably mounted on the end of the fastening bolt 53 near the epoxy mold 1, and a rubber pad 7 is fixedly attached to the end face of the top block 6 away from the fastening bolt 53. Specifically, a connecting seat 8 is fixedly attached to the end face of the top block 6 near the fastening bolt 53. The connecting seat 8 is hollow inside and has a locking block 9 rotatably mounted thereon. The fastening bolt 53 passes through the connecting seat 8 and is fixedly attached to the locking block 9. When the fastening bolt 53 is tightened, it presses against the epoxy mold 1 through the top block 6, and the rubber pad 7 isolates it, preventing damage to the epoxy mold 1.

[0032] Specifically, the receiving tray 21 of the sprue sleeve 2 has a rectangular disc structure, and the outer diameter of the receiving tray 21 is larger than the outer diameter of the support sleeve 4. The top surface of the receiving tray 21 has a downward-facing groove for collecting overflowing epoxy resin. The casting pipe 22 is fixed to the center of the bottom surface of the receiving tray 21, which facilitates the stable placement of the receiving tray 21 on the support sleeve 4.

[0033] Preferably, the top surface of the receiving tray 21 is provided with a boss 24, which is located at the center of the top surface of the receiving tray 21. The top surface of the boss 24 has a funnel-shaped gating hole 25 that communicates with the pouring channel 23. Epoxy resin is delivered to the pouring channel 23 through the funnel-shaped gating hole 25, facilitating the collection of epoxy resin.

[0034] In this embodiment, the pouring channel 23 has a conical structure with a diameter that is wider at the top and narrower at the bottom. The pouring pipe 22 also has a conical structure, and its outer wall shape matches the inner wall shape of the pouring port 13 of the epoxy mold 1. This allows the pouring pipe 22 to seal the pouring port 13 when inserted, preventing epoxy resin from overflowing into the support sleeve 4. Typically, the inner wall of the pouring port 13 of the epoxy mold 1 is a flattened-round conical structure; therefore, in this embodiment, the pouring pipe 22 has a flattened-round conical structure, thus forming a flattened-round conical structure for the pouring channel 23.

[0035] The gating channel 23 adopts a conical structure design, which greatly reduces the transition area between the epoxy resin being molded in the gating channel 23 and the epoxy resin being molded in the casting mold. Because the connection area is small, the connection strength is low. Therefore, after removing the mold, personnel can directly break off the epoxy resin portion molded in the gating channel 23 at the transition connection point, eliminating the need for machine cutting, saving time and labor, and improving production efficiency. Alternatively, a rectangular or flat oval structure can be used to reduce the connection area while ensuring the flow rate and casting efficiency of the epoxy resin. This avoids the situation where the gating channel 23 is too small, resulting in insufficient epoxy resin flow and reduced casting efficiency.

[0036] Working Principle: During installation, first place the support sleeve 4 on the horizontal platform of the epoxy mold 1, and tighten the fastening bolts 53 of the locking parts 5 on both sides, so that the two fastening bolts 53 respectively tighten the punch 11 and the die 12 of the epoxy mold 1, thereby fixing the support base 3 to the epoxy mold 1. The operator places the sprue sleeve 2 on the support sleeve 4, so that the pouring pipe 22 passes through the insertion hole 43 and is inserted into the pouring port 13, sealing the pouring port 13. Epoxy resin is slowly poured into the epoxy mold 1 through the trumpet-shaped sprue 25. When the epoxy resin is poured into the epoxy mold 1, it slowly overflows from the trumpet-shaped sprue 25, at which point pouring stops. The overflowing epoxy resin is collected by the receiving tray 21 to prevent spillage and facilitate cleaning. After pouring, let it sit for a period of time for the epoxy resin to cure and solidify before demolding. When demolding, first loosen the fastening bolts 53 and remove the die 12 and the punch 11. Personnel can break off the molded epoxy resin portion in the casting pipe 22 at the connection point, and then remove the sprue sleeve 2 to clean the epoxy resin. During cleaning, personnel can easily push the epoxy resin outwards from the lower end of the casting pipe 22 using a tool.

[0037] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A detachable epoxy mold gate, characterized in that: The system includes a sprue sleeve (2) and a support base (3). The sprue sleeve (2) includes a receiving tray (21) and a pouring pipe (22). The pouring pipe (22) extends vertically and is fixed to the bottom surface of the receiving tray (21). The pouring channel (23) of the pouring pipe (22) is connected to the top surface of the receiving tray (21). The support base (3) is detachably installed on the epoxy mold (1). The support base (3) has an insertion hole (43) for the pouring pipe (22) to be inserted. The receiving tray (21) is placed on the support base (3). The pouring pipe (22) passes through the insertion hole (43) and is connected to the pouring port (13) of the epoxy mold (1).

2. The detachable epoxy mold gate according to claim 1, characterized in that: The casting pipe (22) is located at the center of the bottom surface of the receiving tray (21).

3. The detachable epoxy mold gate according to claim 1, characterized in that: The top surface of the receiving tray (21) is provided with a boss (24), and the top surface of the boss (24) is provided with a trumpet-shaped pouring hole (25) that communicates with the pouring channel (23).

4. The separable epoxy mold gate according to any one of claims 1 to 3, characterized in that: The pouring channel (23) has a cone-shaped structure, and the diameter of the cone-shaped pouring channel (23) is set to be larger at the top and smaller at the bottom.

5. The detachable epoxy mold gate according to claim 1, characterized in that: The support base (3) includes a support sleeve (4) and locking members (5) fixed to both sides of the support sleeve (4). The support sleeve (4) is placed on the epoxy mold (1). The two locking members (5) are distributed along the axial direction of the epoxy mold (1), and a clamping space for clamping the epoxy mold (1) is formed between the two locking members (5).

6. The detachable epoxy mold gate according to claim 5, characterized in that: The locking component (5) includes a horizontal fixing plate (51) fixedly connected to the support sleeve (4), a vertical fixing plate (52) fixedly connected to the bottom of the horizontal fixing plate (51), and a fastening bolt (53) threadedly connected to the vertical fixing plate (52). The fastening bolt (53) extends axially along the epoxy mold (1) and presses against the epoxy mold (1).

7. The detachable epoxy mold gate according to claim 6, characterized in that: A top block (6) is rotatably mounted on the end of the fastening bolt (53) near the epoxy mold (1), and a rubber pad (7) is fixed on the end face of the top block (6) away from the fastening bolt (53).

8. The separable epoxy mold gate according to any one of claims 5 to 7, characterized in that: The support sleeve (4) includes a coaxial outer sleeve (41) and an inner sleeve (42). A support ring (44) is fixed to the top of the inner sleeve (42). The outer diameter of the support ring (44) is larger than the inner diameter of the outer sleeve (41). Two positioning bolts (45) are threaded on the outer wall of the outer sleeve (41). The two positioning bolts (45) are symmetrically distributed around the center of the outer sleeve (41) and press against the inner sleeve (42).

Images