A modulation ring injection molding tool

Abstract

The invention discloses a modulation ring injection molding tool, comprising a lower concave mold, a lower punch, a lower end ring, an upper end ring, an upper punch and an upper concave mold, the lower concave mold and the lower punch are both fixed concentrically with the lower end ring, a conical gap is formed between the lower convex conical surface of the lower concave mold and the lower concave conical surface of the lower punch, the tip of the conical gap is connected to the gate of the lower concave mold, and the round end is connected to the guide hole of the lower end ring; the guide hole of the lower end ring is connected to the lower end of the injection hole of the modulation ring, and the overflow hole of the upper end ring is connected to the upper end of the injection hole of the modulation ring; the upper punch and the upper concave mold are both fixed concentrically with the upper end ring, a conical gap is formed between the upper convex conical surface of the upper punch and the upper concave conical surface of the upper concave mold, the round end of the conical gap is connected to the overflow hole of the upper end ring, and the tip is connected to the observation hole of the upper concave mold. The modulation ring injection molding tool of the invention has uniform filling, simple operation, high assembly precision, higher injection efficiency, and is suitable for popularization and use.

Description

Technical Field

[0001] The invention relates to the field of injection molding tooling, in particular to an injection molding tooling for a modulation ring. Background Art

[0002] The modulation ring is a core component of permanent magnet gears and permanent magnet composite motors based on the principle of magnetic field modulation. It has broad application prospects in the fields of wind power generation, air cooling islands, belt conveyors, electric vehicles, etc. The modulation ring is composed of magnetic conductive materials and non-magnetic conductive materials arranged at intervals. It has a simple structure, but has high strength and precision requirements. The existing modulation ring magnetic conductive material part is composed of stacked silicon steel sheets, and the non-magnetic conductive material part is assembled by manually filling epoxy glue. There are bubbles, which affects the strength and precision of the modulation ring, and the production efficiency is low, which cannot meet market demand. The non-magnetic conductive material part is also filled by injection molding. The material is injected into the injection hole from the side. The flow channel distance is not uniform, the required pressure is relatively large, and the injection molding is difficult. Summary of the invention

[0003] The purpose of the present invention is to provide a modulation ring injection molding tool to address the problems existing in the prior art. The modulation ring injection molding tool solves the problems of complex assembly process, low precision and poor rigidity of the existing modulation ring non-magnetic material, and provides a modulation ring injection molding tool with uniform filling, simple operation and high assembly precision.

[0004] The purpose of the present invention is to be solved by the following technical solutions:

[0005] A modulation ring injection molding tool, comprising a lower concave mold, a lower punch, a lower end ring, an upper end ring, an upper punch and an upper concave mold, characterized in that the order from bottom to top is the lower punch, the lower end ring, the modulation ring, the upper end ring, the upper punch and the upper concave mold; the lower concave mold has a concave conical surface, a gate and a lower groove, the gate is located at the center of the lower concave mold and is connected to the valley point of the concave conical surface, and the lower concave mold is concentrically fixed to the lower end ring; the lower convex mold has a lower convex conical surface, the lower punch is concentrically fixed to the lower end ring, a conical gap is formed between the lower convex conical surface and the lower concave conical surface, and the conical gap is connected to the guide hole on the lower end ring; the lower end ring and the modulation ring are connected. The ring is concentric and fixed on the lower end face of the modulation ring, and the guide hole of the lower end ring is connected with the lower end of the injection hole of the modulation ring; the upper end ring is concentric with the modulation ring and fixed on the upper end face of the modulation ring, and the overflow hole of the upper end ring is connected with the upper end of the injection hole of the modulation ring; the upper convex mold has an upper convex conical surface, and the upper convex mold is concentrically fixed to the upper end ring; the upper concave mold has an upper concave conical surface, an observation port and an upper concave groove, the observation port is located at the center of the upper concave mold, and is connected with the valley points of the upper and lower concave conical surfaces, and the upper concave mold is concentrically fixed to the upper end ring; a conical gap is formed between the upper convex conical surface and the upper concave conical surface, and the conical gap is connected with the overflow hole on the upper end ring.

[0006] The lower punch, lower end ring, modulation ring, upper end ring and upper punch are all located in the fixed sleeve. The upper and lower ends of the outer circumferential surface of the fixed sleeve are provided with threaded holes. The fixed sleeve is fixed to the lower die by the cooperation of bolts and lower grooves, and the fixed sleeve is fixed to the upper die by the cooperation of bolts and upper grooves.

[0007] The number of the guide holes on the lower end ring, the number of the injection holes on the modulation ring and the number of the overflow holes on the upper end ring are the same.

[0008] A modulation ring injection molding tool comprises the following steps:

[0009] (a) The material is injected from the gate of the lower die;

[0010] (b) The material flows into the guide hole of the lower end ring along the tapered gap between the lower die and the lower punch;

[0011] (c) The material flows into the injection hole of the modulation ring along the guide hole;

[0012] (d) When the material fills the injection hole, it flows out from the overflow hole of the upper end ring;

[0013] (e) When the material flows into the observation port of the upper die along the conical gap between the upper die and the upper punch and emerges from the observation port, the injection molding is completed.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present invention aims at the structure that the modulation ring has many injection holes and the injection holes are not connected, and proposes an injection molding tool, which connects the gate with each injection hole through a tapered gap, and the flow channel length of the material is the same, which makes it easier to fill each injection hole and improve the filling effect of the material. The present invention avoids the problems of bubbles and low precision caused by manual filling of materials, as well as the problems of high pressure and unevenness caused by side injection molding, has higher production efficiency, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attached Figure 1 It is a schematic diagram of the structure of a modulation ring injection molding tooling of the present invention;

[0017] Attached Figure 2 It is a schematic diagram of the lower die structure;

[0018] Attached Figure 3 Schematic diagram of the lower punch structure;

[0019] Attached Figure 4 Schematic diagram of the lower end ring structure;

[0020] Attached Figure 5 Schematic diagram of the modulation ring structure.

[0021] Among them: 1 lower die; 1-1 lower concave cone; 1-2 gate; 1-3 lower groove; 2 lower punch; 2-1 lower convex cone; 3 lower end ring; 3-1 guide hole; 4 upper end ring; 4-1 overflow hole; 5 upper punch; 5-1 upper convex cone; 6 upper die; 6-1 upper concave cone; 6-2 observation port; 6-3 upper groove; 7 fixing sleeve; 8 bolt; 9 modulation ring; 9-1 injection hole. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1-5 The invention discloses a modulation ring injection molding tool, comprising a lower die (1), a lower punch (2), a lower end ring (3), an upper end ring (4), an upper punch (5) and an upper die (6), characterized in that the order from bottom to top is the lower punch (2), the lower end ring (3), the modulation ring (9), the upper end ring (4), the upper punch (5) and the upper die (6); the lower die (1) has a concave conical surface (1-1), a gate (1-2) and a lower groove (1-3), and the gate (1-2) is located at the center of the lower concave die (1) and is connected to the valley point of the concave conical surface (1-1). The lower concave die (1) and the lower end ring (3) are fixed concentrically. The lower convex die (2) has a convex conical surface (2-1). The lower convex die (2) and the lower end ring (3) are fixed concentrically. A conical gap is formed between the convex conical surface (2-1) and the concave conical surface (1-1). The conical gap is connected to the guide hole (3-1) on the lower end ring (3). The lower end ring (3) and the modulation ring ( The upper end ring (4) is concentric with the modulation ring (9) and fixed on the lower end surface of the modulation ring (9); the guide hole (3-1) of the lower end ring (3) is connected to the lower end of the injection hole (9-1) of the modulation ring (9); the upper end ring (4) is concentric with the modulation ring (9) and fixed on the upper end surface of the modulation ring (9); the overflow hole (4-1) of the upper end ring (4) is connected to the upper end of the injection hole (9-1) of the modulation ring (9); the upper punch (5) has an upper convex conical surface (5-1); the upper punch (5) is connected to the upper end ring (4) are fixed concentrically; the upper die (6) has an upper concave cone surface (6-1), an observation port (6-2) and an upper groove (6-3); the observation port (6-2) is located at the center of the upper die (6) and is connected to the valley points of the upper and lower concave cone surfaces (6-1); the upper die (6) is fixed concentrically with the upper end ring (4); a conical gap is formed between the upper convex cone surface (5-1) and the upper concave cone surface (6-1), and the conical gap is connected to the overflow hole (4-1) on the upper end ring (4).

[0024] In this embodiment, the lower punch (2), the lower end ring (3), the modulation ring (9), the upper end ring (4), and the upper punch (5) are all located in the fixed sleeve (7). The upper and lower ends of the outer circumferential surface of the fixed sleeve (7) are provided with threaded holes. The fixed sleeve (7) is fixed to the lower die (1) by the cooperation of the bolt (8) and the lower groove (1-3), and the fixed sleeve (7) is fixed to the upper die (6) by the cooperation of the bolt (8) and the upper groove (6-3).

[0025] In this embodiment, the number of the guide holes (3-1) on the lower end ring (3), the number of the injection holes (9-1) on the modulation ring (9), and the number of the overflow holes (4-1) on the upper end ring (4) are the same.

[0026] The injection molding method using the above-mentioned modulation ring injection molding tool comprises the following steps:

[0027] (a) The material is injected from the gate (1-2) of the lower die (1);

[0028] (b) the material flows into the guide hole (3-1) of the lower end ring (3) along the conical gap between the lower die (1) and the lower punch (2);

[0029] (c) the material flows into the injection hole (9-1) of the modulation ring (9) along the guide hole (3-1);

[0030] (d) When the injection hole (9-1) is fully filled with material, it flows out from the overflow hole (4-1) of the upper end ring (4);

[0031] (e) When the material flows into the observation port (6-2) of the upper die (6) along the tapered gap between the upper die (6) and the upper punch (5) and emerges from the observation port (6-2), the injection molding is completed.

[0032] The present invention aims at the structure that the modulation ring has many injection holes and the injection holes are not connected, and proposes an injection molding tool, which connects the gate with each injection hole through a tapered gap, and the flow channel length of the material is the same, which makes it easier to fill each injection hole and improve the filling effect of the material. The present invention avoids the problems of bubbles and low precision caused by manual filling of materials, as well as the problems of high pressure and unevenness caused by side injection molding, has higher production efficiency, and is suitable for popularization and use.

[0033] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention; any technology not involved in the present invention can be realized by existing technologies.

Claims

1. A modulation ring injection molding tool, comprising a lower concave mold (1), a lower punch (2), a lower end ring (3), an upper end ring (4), an upper punch (5) and an upper concave mold (6), characterized in that: The sequence from bottom to top is the lower punch (2), the lower end ring (3), the modulation ring (9), the upper end ring (4), the upper punch (5) and the upper die (6); the lower die (1) has a lower concave cone (1-1), a gate (1-2) and a lower groove (1-3); the gate (1-2) is located at the center of the lower die (1) and is connected to the valley point of the lower concave cone (1-1); the lower die (1) and the lower end ring (3) are fixed concentrically; the lower punch (2) has a lower convex cone (2-1); the lower punch (2) and the lower end ring (3) are fixed concentrically; the lower convex cone (2-1) A conical gap is formed between the lower end ring (3) and the concave conical surface (1-1), and the conical gap is connected to the guide hole (3-1) on the lower end ring (3); the lower end ring (3) is concentric with the modulation ring (9) and fixed on the lower end surface of the modulation ring (9); the guide hole (3-1) of the lower end ring (3) is connected to the lower end of the injection hole (9-1) of the modulation ring (9); the upper end ring (4) is concentric with the modulation ring (9) and fixed on the upper end surface of the modulation ring (9); the overflow hole (4-1) of the upper end ring (4) is connected to the upper end of the injection hole (9-1) of the modulation ring (9); the upper punch (5) has an upper convex The upper convex mold (5) is fixed concentrically with the upper end ring (4); the upper concave mold (6) has an upper concave conical surface (6-1), an observation port (6-2) and an upper groove (6-3); the observation port (6-2) is located at the center of the upper concave conical surface (6) and is connected to the valley point of the upper concave conical surface (6-1); the upper concave mold (6) is fixed concentrically with the upper end ring (4); a conical gap is formed between the upper convex conical surface (5-1) and the upper concave conical surface (6-1), and the conical gap is connected to the overflow hole (4-1) on the upper end ring (4); the lower convex mold (2), the lower end ring (3), the modulation mold (6) and the lower end ring (4) are connected to each other. The ring (9), the upper end ring (4), and the upper punch (5) are all located in the fixed sleeve (7); the upper end and the lower end of the outer circumferential surface of the fixed sleeve (7) are provided with threaded holes; the fixed sleeve (7) is fixed to the lower die (1) by the cooperation of the bolt (8) and the lower groove (1-3); the fixed sleeve (7) is fixed to the upper die (6) by the cooperation of the bolt (8) and the upper groove (6-3); the number of the guide holes (3-1) on the lower end ring (3), the number of the injection holes (9-1) on the modulation ring (9), and the number of the overflow holes (4-1) on the upper end ring (4) are the same.

2. A method for using the modulation ring injection molding tool according to claim 1, characterized in that: The following steps are involved: (a) The material is injected from the gate (1-2) of the lower die (1); (b) the material flows into the guide hole (3-1) of the lower end ring (3) along the conical gap between the lower die (1) and the lower punch (2); (c) the material flows into the injection hole (9-1) of the modulation ring (9) along the guide hole (3-1); (d) When the injection hole (9-1) is fully filled with material, it flows out from the overflow hole (4-1) of the upper end ring (4); (e) When the material flows into the observation port (6-2) of the upper die (6) along the conical gap between the upper die (6) and the upper punch (5) and emerges from the observation port (6-2), the injection molding is completed.

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