Mechanism for flow passage balance control

Abstract

The utility model discloses a mechanism of runner balance control, including runner fixed base, the upper end surface one side of runner fixed base is established and inserts the through -hole, and the telescopic bolt is inserted in the through -hole, the telescopic bolt passes through the limiting pin subassembly and realizes the location fixed. The limiting pin subassembly includes the limiting pin, and the outer wall of telescopic bolt sets up the limiting card slot, the front end surface of runner fixed base sets up the limiting bush, the limiting bush is connected the through -hole, and the limiting pin is inserted in the limiting bush, and the limiting pin cooperates the limiting card slot and is located to telescopic bolt. The limiting bush and the limiting pin are all square. One end of runner fixed base sets up the threaded hole, and is connected on runner template through fixed screw. The limiting card slot is multiple, and the equidistance is established on the outer wall of telescopic bolt. The utility model discloses a mechanism of runner balance control that the purpose is to overcome the existing defects and provide, and the simple structure is convenient to install.

Description

Technical Field

[0001] This utility model relates to a mechanism for flow channel balance control. Background Technology

[0002] Against the backdrop of the booming development of the modern new energy vehicle industry, the trend of product diversification and complexity is becoming increasingly prominent. Various products are pursuing multi-cavity mold structures as a primary method for enterprises to improve production efficiency and save equipment costs, which poses unprecedented challenges to high standards of injection molding quality. Traditional runner flow rate control structures are complex and inconvenient to install inside the injection molding machine. Therefore, a runner balance control mechanism is proposed to address these issues. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of existing systems by providing a flow channel balance control mechanism that is simple in structure and easy to install.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flow channel balance control mechanism, including a flow channel fixing seat, wherein an insertion through hole is opened on one side of the upper end face of the flow channel fixing seat, and a telescopic pin is inserted into the insertion through hole; the telescopic pin is limited and fixed by a limiting pin assembly.

[0005] Preferably, the limiting pin assembly includes a limiting pin, and a limiting groove is formed on the outer wall of the telescopic pin; a limiting insertion hole is formed on the front end face of the flow channel fixing seat, the limiting insertion hole is connected to the insertion through hole, the limiting pin is inserted into the limiting insertion hole, and the limiting pin cooperates with the limiting groove to limit the telescopic pin.

[0006] Preferably, both the limiting hole and the limiting pin are square.

[0007] Preferably, one end of the flow channel fixing seat has a threaded hole and is connected to the flow channel template by a fixing screw.

[0008] Preferably, there are multiple limiting slots, which are equally spaced on the outer wall of the telescopic pin.

[0009] Preferably, the limiting pin is adapted to the limiting slot.

[0010] Compared with existing technologies, the beneficial effects of this utility model are as follows: The flow channel balance control mechanism utilizes a through-hole on one side of the upper end face of the flow channel fixing seat, into which a telescopic pin is inserted. The telescopic pin achieves limiting and fixing; by limiting the extension length of the lower end of the telescopic pin, the size of the flow channel is limited, thereby limiting the flow rate of the plastic. This achieves the function of controlling the flow rate of molten plastic fluid. The overall structure is flexible and compact, easy to install, and suitable for flow channel balance control in multi-cavity molding of complex products. Attached Figure Description

[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Fig. 1 This is an isometric drawing of the flow channel balance control mechanism of this utility model; Fig. 2 This is a detailed view of the position of the limiting socket of this utility model; Fig. 3 This is a detailed drawing of the telescopic pin of this utility model.

[0012] In the diagram: 1. Flow channel fixing seat; 2. Insertion through hole; 3. Telescopic pin; 4. Limiting slot; 5. Limiting insertion hole; 6. Limiting pin; 7. Threaded hole; 8. Fixing screw. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figs. 1-3 As shown, the flow channel balance control mechanism is suitable for multi-cavity molding of complex products, offering a flexible and compact structure for various applications. It includes a flow channel fixing base 1, with an insertion through-hole 2 on one side of its upper surface. A telescopic pin 3 is inserted into the insertion through-hole 2. The telescopic pin 3 is fixed and limited by a limiting pin assembly. The limiting pin assembly includes a limiting pin 6, and a limiting slot 4 is formed on the outer wall of the telescopic pin 3. A limiting insertion hole 5 is formed on the front end face of the flow channel fixing base 1, connecting to the insertion through-hole 2. The limiting pin 6 is inserted into the limiting insertion hole 5, and the limiting pin 6 cooperates with the limiting slot 4 to limit the telescopic pin 3. Both the limiting insertion hole 5 and the limiting pin 6 are square. Multiple limiting slots 4 are evenly spaced on the outer wall of the telescopic pin 3. The limiting pin 6 is compatible with the limiting slot 4.

[0015] Specifically, the size of the flow channel is limited by restricting the extension length of the lower end of the telescopic pin 3 by the limiting pin 6, thereby limiting the flow rate of the plastic. This achieves the effect of controlling the flow rate of the molten plastic fluid.

[0016] Specifically, a threaded hole 7 is provided at one end of the flow channel fixing seat 1, and it is connected to the flow channel template by a fixing screw 8.

[0017] This flow channel balance control mechanism is used to achieve the design purpose of flow channel balance control when the temperature distribution of the plastic melt in each mold cavity is uneven, the injection pressure rise rate of each mold cavity is inconsistent, and the final cavity pressure is inconsistent. With its unique structural characteristics, it can realize the multi-cavity molding of complex products in a limited mold space, and ensure the high quality and uniformity of the injection molded parts, making it an indispensable key component in the design of precision injection molds.

[0018] The gating system includes the main runner, branch runners, and gate. The branch runner is the channel from the main runner to the gate, allowing the molten plastic to flow smoothly to the gate. The gate is a narrow channel at the end of the branch runners and into the mold cavity, accelerating the molten material flow, increasing temperature and viscosity under high shear rates, and filling the cavity as quickly as possible. After injection, the gate is the first to cool, seal, and solidify to prevent backflow of the molten plastic in the cavity, and also to avoid various defects such as shrinkage, sink marks, and dimensional inconsistencies caused by a drop in mold cavity pressure. The runner balance control mechanism is crucial because the injection mold has many influences on the quality of the plastic part, among which the gating system is one of the most important factors.

[0019] Ideally, the injection molding process should meet the following time and pressure requirements: uniform temperature distribution of the molten plastic in each cavity; consistent injection pressure rise rate in each cavity; and consistent final cavity pressure. Many factors influence the flow of molten material into multiple cavities, such as the temperature distribution of the melt, the shape and pressure loss of the runners, and the shape and size of the gates. Among these, the shape and cross-sectional dimensions of the runners and gates are the main factors affecting material supply. The gating system, including the main runner, branch runners, and gates, serves as both the melt delivery channel and the transmission channel for injection pressure and injection rate. To ensure high quality and uniformity of injection molded parts, the injection molding process in each cavity must be consistent, meaning that the pressure, melt volume, and injection transmission speed in each cavity must be consistent, and the melt flow in each runner must maintain a state of flow balance. The runner flow balance control structure can be defined according to design requirements. It is flexible, compact, and easy to install, suitable for runner balance control in multi-cavity molding of complex products.

[0020] The flow channel balancing control mechanism uses a through hole 2 on one side of the upper end face of the flow channel fixing seat 1, into which a telescopic pin 3 is inserted. The telescopic pin 3 achieves limiting and fixing; the extension length of the lower end of the telescopic pin 3 is limited by a limiting pin 6, thereby limiting the size of the flow channel and thus limiting the flow rate of the plastic. This achieves the function of controlling the flow rate of molten plastic fluid. The overall structure is flexible and compact, easy to install, and suitable for flow channel balancing control in multi-cavity molding of complex products.

[0021] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mechanism for flow channel balance control, characterized in that, It includes a flow channel fixing seat (1), and an insertion through hole (2) is opened on one side of the upper end face of the flow channel fixing seat (1). A telescopic pin (3) is inserted into the insertion through hole (2); the telescopic pin (3) is limited and fixed by a limiting pin assembly.

2. The flow channel balance control mechanism according to claim 1, characterized in that, The limiting pin assembly includes a limiting pin (6), and a limiting slot (4) is opened on the outer wall of the telescopic pin (3); a limiting insertion hole (5) is opened on the front end face of the flow channel fixing seat (1), the limiting insertion hole (5) is connected to the insertion through hole (2), the limiting pin (6) is inserted in the limiting insertion hole (5), and the limiting pin (6) cooperates with the limiting slot (4) to limit the telescopic pin (3).

3. The flow channel balance control mechanism according to claim 2, characterized in that, Both the limiting hole (5) and the limiting pin (6) are square.

4. The flow channel balance control mechanism according to claim 1, characterized in that, One end of the flow channel fixing seat (1) has a threaded hole (7) and is connected to the flow channel template by a fixing screw (8).

5. The flow channel balance control mechanism according to claim 2, characterized in that, The limiting slots (4) are multiple and are evenly spaced on the outer wall of the telescopic pin (3).

6. The flow channel balance control mechanism according to claim 2, characterized in that, The limiting pin (6) is adapted to the limiting slot (4).

Images