Material injection tool for injection molding of transformer

Abstract

A material injection tool for transformer injection molding is arranged on one side of a transformer injection mold and comprises a bottom plate, the bottom plate is provided with a pair of vertical rods, the vertical rods are sleeved with movable blocks, plug pins are inserted into the movable blocks, a plurality of insertion holes are distributed in the vertical rods in the length direction of the vertical rods, the plug pins are inserted into the insertion holes, and adjustment can be correspondingly carried out corresponding to injection molds with different heights. A feeding tank is arranged between the movable blocks, a pair of mounting lugs are symmetrically welded to the upper end of the feeding tank, the mounting lugs are mounted on the movable blocks through bolts, a conical tank is formed at the lower end of the feeding tank, the lower end of the conical tank is a small end, the lower end of the conical tank is communicated with a discharging pipe, and the peripheral side of the lower end of the discharging pipe is communicated with an injection pipe; the lower end of the injection pipe extends into the transformer injection mold, when filling is conducted through the injection pipe, air in the mold can be conveniently exhausted during filling, so that the defects that air holes exist in an injection molding part and the like can be overcome, resin can be prevented from splashing outwards during injection, and the opening in the upper end of the feeding tank is large, so that the resin is conveniently poured into the injection molding part.

Description

Technical Field

[0001] This utility model relates to the field of transformer processing technology, and in particular to an injection tooling for transformer injection molding. Background Technology

[0002] The high-voltage and low-voltage shells of dry-type transformers are manufactured using injection molding. During injection molding, the mold is first assembled, then the mixed resin is filled into the mold, followed by heat curing. However, when filling the resin, operators often pour it directly into the mold, which easily causes resin to splash, resulting in material waste and potential ground contamination. Utility Model Content

[0003] This utility model provides an injection tooling for transformer injection molding, which solves the shortcomings of the prior art and solves the problem of easy splashing of resin during filling, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted:

[0005] A transformer injection molding fixture is located on one side of a transformer injection mold. It includes a base plate with a pair of vertical rods. Movable blocks are fitted onto the vertical rods, and pins are inserted into the movable blocks. Multiple insertion holes are distributed along the length of the vertical rods, and the pins are inserted into these holes. This allows for adjustment to accommodate injection molds of different heights, thus expanding its applicability. A feed canister is located between the movable blocks. A pair of mounting ears are symmetrically welded to the upper end of the feed canister, which are bolted to the movable blocks. The lower end of the feed canister is formed into a conical canister with a smaller lower end. A discharge pipe connects to the lower end of the discharge pipe, and an injection pipe connects to the lower periphery of the discharge pipe. The lower end of the injection pipe extends into the transformer injection mold. During filling, air within the mold can be easily expelled through the injection pipe, preventing defects such as air pockets in the molded part. Resin splashing is also prevented during injection. Furthermore, the large opening at the upper end of the feed canister facilitates the pouring of resin.

[0006] Furthermore, to facilitate the complete discharge of resin, the lower end of the discharge pipe is inclined, and the end near the injection pipe extends downward at an angle.

[0007] Furthermore, to prevent splashing during resin filling, an arc-shaped baffle is installed at the top of the feed tank.

[0008] Furthermore, to facilitate the fixing of the raw material barrel and the filling of resin by the operator, an L-shaped arm is bolted to the movable block. A transverse hole is opened on the horizontal section of the L-shaped arm, and a moving rod is inserted through the transverse hole. A limiting ring is provided at the outer end of the moving rod, and the limiting ring is located on the outer side of the L-shaped arm. A connecting arm is welded to the inner end of the moving rod, and a placement ring is welded to the inner end of the connecting arm. The raw material barrel is placed in the placement ring. A movable sleeve is fitted on the connecting arm, and a baffle is provided at the inner end of the movable sleeve. The inner end of the baffle acts on the rim of the raw material barrel to limit the movement of the raw material barrel.

[0009] Furthermore, to facilitate the extraction of the pin and the adjustment of the discharge pipe height, a concave part is installed on the movable block. A pull rod passes through the concave part, and the inner end of the pull rod is welded to the outer end of the pin. A spring is sleeved on the pull rod, located inside the concave part, and the inner end of the spring acts on the outer end of the pin. An external pull crossbar is provided on the outer end of the pull rod. A hinged convex plate is welded to the outer end of the concave part. A pair of V-shaped plates are hinged to the outer end of the hinged convex plate via a shaft. A strip hole is opened at the upper end of the V-shaped plate, and the external pull crossbar passes through the strip hole. A support bracket is provided at the lower end of the V-shaped plate. A movable ring is sleeved on the feed tank, and a pair of sleeves are provided on the movable ring. The sleeves are sleeved on the vertical rod, and an extension plate is provided on the sleeve. An action cross hole is opened on the extension plate, and the support bracket passes through the action cross hole.

[0010] Furthermore, to facilitate the movement of the movable ring, a concave handle is welded onto the movable ring.

[0011] The advantages of the above technical solution are:

[0012] This invention facilitates resin filling and prevents resin splashing during injection. Attached Figure Description

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a more detailed description of this utility model in conjunction with the accompanying drawings.

[0014] Figure 1 A three-dimensional structure of one embodiment is shown. Figure 1 .

[0015] Figure 2 A three-dimensional structure of one embodiment is shown. Figure 2 .

[0016] Figure 3 A magnified view of point A is shown.

[0017] Figure 4 A magnified view of point B is shown. Detailed Implementation

[0018] like Figures 1-4 As shown, a material injection fixture for transformer injection molding is located on one side of a transformer injection mold 1. It includes a base plate 2, on which a pair of vertical rods 20 are mounted. Movable blocks 4 are fitted onto the vertical rods 20, and pins are inserted into the movable blocks 4. Multiple insertion holes are distributed along the length of the vertical rods 20, and the pins are inserted into these holes. A feed canister 3 is located between the movable blocks 4. An arc-shaped baffle 31 is located at the upper end of the feed canister 3. A pair of mounting ears 34 are symmetrically welded to the upper end of the feed canister 3, and the mounting ears 34 are bolted to the movable blocks 4. A conical canister 30 is formed at the lower end of the feed canister 30, with the lower end of the conical canister 30 being the smaller end. A discharge pipe 32 is connected to the lower end of the discharge pipe 32, and an injection pipe 33 is connected to the lower periphery of the discharge pipe 32. The lower end face of the discharge pipe 32 is inclined, and the end near the injection pipe 33 extends downwards at an angle. The lower end of the injection pipe 33 extends into the transformer injection mold 1.

[0019] A concave part 40 is installed on the movable block 4. A pull rod 41 passes through the concave part 40. The inner end of the pull rod 41 is welded to the outer end of the pin. A spring 7 is sleeved on the pull rod 41. The spring 7 is located inside the concave part 40. The inner end of the spring 7 acts on the outer end of the pin. An outer pull crossbar 42 is provided on the outer end of the pull rod 41. A hinged protrusion 43 is welded to the outer end of the concave part 40. A pair of V-shaped plates 44 are hinged to the outer end of the hinged protrusion 43 via a shaft. The upper end of the V-shaped plate 44 is provided with a strip hole 45, and the outer pull crossbar 42 passes through the strip hole 45. The lower end of the V-shaped plate 44 is provided with a support bracket 46. The feed tank 3 is fitted with a movable ring 49, and a concave handle 50 is welded on the movable ring 49. The movable ring 49 is provided with a pair of sleeves 47, which are fitted on the vertical rod 20. The sleeves 47 are provided with an extension plate, and an active horizontal hole 48 is provided on the extension plate. The support bracket 46 passes through the active horizontal hole 48.

[0020] An L-shaped arm 6 is bolted to the movable block 4. A transverse hole 60 is provided on the horizontal section of the L-shaped arm 6. A movable rod 61 passes through the transverse hole 60. A limiting ring 62 is provided at the outer end of the movable rod 61. The limiting ring 62 is located on the outer side of the L-shaped arm 6. A connecting arm 63 is welded to the inner end of the movable rod 61. A placement ring 64 is welded to the inner end of the connecting arm 63. The raw material barrel is placed in the placement ring 64. A movable sleeve 65 is fitted on the connecting arm 63. A baffle 66 is provided at the inner end of the movable sleeve 65. The inner end of the baffle 66 acts on the rim of the raw material barrel to limit the movement of the raw material barrel.

[0021] In this embodiment, when adjusting the height of the feed tank 3, the operator holds the concave handle 50 and moves the movable ring 49 upward. When the movable ring 49 moves upward, it will drive the outer extension plate to move upward. As the outer extension plate moves upward, it will act on the support bracket 46 through the action hole 48, thereby causing the support bracket 46 to move inward. At the same time, the upper end of the V-shaped plate 44 rotates outward. As the V-shaped plate 44 rotates outward, the strip hole 45 on it will act on the outer pull rod 42, thereby causing the outer pull rod 42 to move outward, and then pull the pin out of the insertion hole. At this time, the spring 7 will be in a compressed state, and then the movable block 4 will be moved to the appropriate position of the vertical rod 20.

[0022] In this embodiment, when filling the raw material, the operator places the raw material barrel on the placement ring 64 and then moves the baffle 66 inward so that the inner end of the baffle 66 acts on the barrel rim of the raw material barrel. Then, the raw material barrel is pushed inward and rotated to pour the resin in the raw material barrel into the feed tank 3, which then flows into the injection pipe 33 and finally into the mold. This operation is repeated until the injection molding operation is completed. During the injection process, since the inner diameter of the injection pipe 33 is controllable, air is prevented from entering during injection, thus avoiding defects such as air holes.

[0023] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A tooling for injection molding transformers, characterized in that, Located on one side of the transformer injection mold (1), including a base plate (2), on which a pair of vertical rods (20) are provided. A movable block (4) is fitted on the vertical rod (20), and a pin is inserted into the movable block (4). Multiple insertion holes are distributed along the length of the vertical rod (20), and the pin is inserted into the insertion hole. A feed tank (3) is provided between the movable blocks (4). A pair of mounting ears (34) are symmetrically welded to the upper end of the feed tank (3). The mounting ears (34) are installed on the movable blocks (4) by bolts. A conical tank (30) is formed at the lower end of the feed tank (3). The lower end of the conical tank (30) is the small end. The lower end of the conical tank (30) is connected to the discharge pipe (32). The lower end of the discharge pipe (32) is connected to the injection pipe (33) on the periphery. The lower end of the injection pipe (33) extends into the transformer injection mold (1). An L-shaped arm (6) is bolted onto the movable block (4). A transverse hole (60) is provided on the horizontal section of the L-shaped arm (6). A moving rod (61) is inserted through the transverse hole (60). A limiting ring (62) is provided at the outer end of the moving rod (61). The limiting ring (62) is located on the outer side of the L-shaped arm (6). A connecting arm (63) is welded to the inner end of the moving rod (61). A placement ring (64) is welded to the inner end of the connecting arm (63). The raw material barrel is placed inside the placement ring (64). A movable sleeve (65) is fitted on the connecting arm (63). A baffle (66) is provided at the inner end of the movable sleeve (65). The inner end of the baffle (66) acts on the edge of the raw material barrel to limit the movement of the raw material barrel.

2. The injection molding tooling for transformers according to claim 1, characterized in that, The lower end face of the discharge pipe (32) is inclined, and the end near the injection pipe (33) extends downward at an inclined angle.

3. The injection molding tooling for transformers according to claim 1, characterized in that, The upper end of the feed tank (3) is provided with an arc-shaped baffle (31).

4. The injection molding tooling for transformers according to claim 1, characterized in that, A concave part (40) is installed on the movable block (4). A pull rod (41) is threaded through the concave part (40). The inner end of the pull rod (41) is welded to the outer end of the pin. A spring (7) is sleeved on the pull rod (41). The spring (7) is located inside the concave part (40). The inner end of the spring (7) acts on the outer end of the pin. An outer pull crossbar (42) is provided on the outer end of the pull rod (41). A hinged protrusion (43) is welded to the outer end of the concave part (40). The outer end of the hinged protrusion (43) is hinged to a shaft. The upper end of the V-shaped plate (44) is provided with a strip hole (45), and the outer pull crossbar (42) passes through the strip hole (45). The lower end of the V-shaped plate (44) is provided with a support bracket (46). The feed tank (3) is fitted with a movable ring (49), and a pair of sleeves (47) are provided on the movable ring (49). The sleeves (47) are fitted on the vertical rod (20). The sleeves (47) are provided with an extension plate, and an action cross hole (48) is provided on the extension plate. The support bracket (46) passes through the action cross hole (48).

5. The injection molding tooling for transformers according to claim 4, characterized in that, A concave handle (50) is welded onto the movable ring (49).

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