A hot runner stack injection mold sleeve type needle valve hot nozzle

Abstract

The present invention discloses a hot runner stack injection mold sleeve-type needle valve hot nozzle, comprising: a stacking template component consisting of a movable template (1), a first fixed template (21) and a second fixed template (22), a hot runner system component (5) consisting of a hot runner plate (501) and a product hot nozzle (502), a main and auxiliary hot nozzle component consisting of an auxiliary hot nozzle (102) and a main hot nozzle (202) (wherein, the auxiliary hot nozzle (102) is arranged on the movable mold (1), and the main hot nozzle (202) is arranged on the first fixed mold (21); the stacking template component, the hot runner system component, the movable and fixed templates docking hot nozzles form a hot runner stack mold. The mold docks with the injection molding machine nozzle (3) through the rear end of the main hot nozzle (202); in addition, the auxiliary hot nozzle (102) is assembled on the hot runner system (5) consisting of the hot runner plate (501) and the product hot nozzle (502).

Description

Technical Field

[0001] The invention relates to a hot runner stacked injection mould with a movable mould and a fixed mould butting hot nozzle. Background Art

[0002] Hot runner stack injection molds are a key approach to improving injection molding production efficiency. Due to the special nature of stack molds, the hot runner plate is typically mounted on the movable mold. The melt flow path of the runner plate must flow through the hot nozzle located on the movable mold and dock with the hot nozzle on the fixed mold, opening and closing the connection with the injection molding machine's injection flow channel in a reciprocating cycle. However, at the interface between the primary and secondary hot nozzles, due to high temperature and high pressure, hot melt plastic can easily overflow the runner and adhere to the hot nozzle docking surface, affecting mold clamping accuracy and normal production. Summary of the Invention

[0003] The invention aims to provide a hot runner stack injection mold with a hot nozzle for connecting a movable mold and a fixed mold.

[0004] The technical solutions adopted by the present invention to solve the above technical problems are as follows:

[0005] A hot runner stack injection mold sleeve needle valve hot nozzle, the structure of which includes a stacked mold assembly consisting of a movable mold plate (1), a first fixed mold plate (21), and a second fixed mold plate (22), a main and auxiliary hot nozzle assembly consisting of an auxiliary hot nozzle (102) and a main hot nozzle (202), and a sleeve needle valve ejection assembly (101); wherein the auxiliary hot nozzle (102) is arranged on a hot runner system (5) consisting of a runner plate (501) and a product hot nozzle (502), and together they constitute a movable mold (1); The main hot nozzle (202) is arranged on the first fixed mold (21), and the rear end of the main hot nozzle (202) is connected to the injection molding machine nozzle (3); in addition, a process material storage cake (4) is provided at the connection point between the main hot nozzle (202) and the auxiliary hot nozzle (102), and the auxiliary hot nozzle (102) and the main hot nozzle (202) move toward each other as the first fixed mold (21), the movable mold (1) and the second fixed mold (22) are opened and closed, connecting the movable and fixed molds with the injection molding machine flow channel, and the valve needle in the nozzle closes or connects the entire hot runner, thereby completing the working cycle of the hot runner system (5).

[0006] Preferably, the sleeve-type needle valve ejection assembly (101) is arranged on the auxiliary hot nozzle (102), and the ejection assembly ejects the process storage cake (4) arranged at the connection point with the central main hot nozzle (202) while ejecting the product (8) from the injection molding machine.

[0007] Preferably, the sleeve-type needle valve ejection assembly (101) is arranged on the main hot nozzle (202). After the movable and fixed molds are closed, and the needle valves of the main and auxiliary hot nozzles are opened, the sleeve needle pushes the process cake (4) into the hot runner of the movable mold auxiliary hot nozzle (102). Figure 6 ).

[0008] Preferably, the sleeve-type needle valve ejection assembly is a pneumatic, hydraulic, electromagnetic or mechanical drive structure.

[0009] By adopting the above solution, the present invention solves the quality and stability of the docking of the movable and fixed hot nozzles of the stacked mold, and is simpler, more reliable and more economical than other runner docking methods.

[0010] Other features and advantages of the present invention will be described in the following description (more obvious in the accompanying drawings), or understood by practicing the present invention. The advantages and objectives of the present invention can be obtained and realized by the structures particularly pointed out in the written description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be described in detail below with reference to the accompanying drawings to make the above advantages of the present invention more clear.

[0012] Figure 1 It is a structural schematic diagram of the hot runner stack injection mold movable and fixed mold docking hot nozzle in the hot runner stack injection mold sleeve type needle valve hot nozzle of the present invention;

[0013] Figure 2 It is a structural schematic diagram of the hot runner stack injection mold movable and fixed mold docking hot nozzle in the hot runner stack injection mold sleeve type needle valve hot nozzle of the present invention;

[0014] Figure 3 It is a working schematic diagram of the hot runner stack injection mold movable and fixed mold docking hot nozzle in the hot runner stack injection mold sleeve type needle valve hot nozzle of the present invention;

[0015] Figure 4 It is a working schematic diagram of the hot runner stack injection mold movable and fixed mold docking hot nozzle in the hot runner stack injection mold sleeve type needle valve hot nozzle of the present invention;

[0016] Figure 5 The invention discloses a hot runner stack injection mold with a sleeve-type needle valve hot nozzle, and a hot runner stack injection mold with a movable mold and a fixed mold.

[0017] Figure 6 The invention provides a schematic diagram of the working of the movable and fixed hot nozzles of the hot runner stack injection mold in the sleeve-type needle valve hot nozzle of the hot runner stack injection mold, wherein the sleeve-type needle valve ejection assembly (101) is arranged on the main hot nozzle (202). DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to specific embodiments.

[0019] The purpose of the present invention is to provide a hot runner stack injection mold with a movable mold and a fixed mold butting hot nozzle.

[0020] The technical solutions adopted by the present invention to solve the above technical problems are as follows:

[0021] like( Figure 1 )( Figure 2 ) as shown:

[0022] A hot runner stacked injection mold with a hot nozzle for connecting movable and fixed mold plates, the structure of which includes a stacked mold plate assembly consisting of a movable mold plate (1), a first fixed mold plate (21), and a second fixed mold plate (22), a main and auxiliary hot nozzle assembly consisting of an auxiliary hot nozzle (102) and a main hot nozzle (202), and a sleeve-type needle valve ejection assembly (101); wherein the auxiliary hot nozzle (102) is arranged on a hot runner system (5) consisting of a runner plate (501) and a product hot nozzle (502), and together they constitute a movable mold (1). The main hot nozzle (202) is arranged on the first fixed mold (21), and the rear end of the main hot nozzle (202) is connected to the injection molding machine nozzle (3); in addition, a process storage cake (4) is provided at the connection point between the main hot nozzle (202) and the auxiliary hot nozzle (102), and the auxiliary hot nozzle (102) and the main hot nozzle (202) move toward each other as the first fixed mold (21), the movable mold (1) and the second fixed mold (22) are opened and closed, connecting the movable and fixed molds with the injection molding machine flow channel, and the valve needle in the nozzle closes or connects the entire hot runner.

[0023] Among them, in the implementation ( Figure 1 ) example, the sleeve-type needle valve ejection assembly (101) is arranged on the auxiliary hot nozzle (102). When the injection molding machine ejects the product (8), the ejection assembly ejects the process storage cake (4) arranged at the interface with the central main hot nozzle (202). This ensures that the interface between the main and auxiliary hot nozzles is clean and that the mold reciprocating cycle works normally.

[0024] like Figure 1 、 3 As shown in 4 and 5, Figure 3 In the middle, after the mold is closed, the main and auxiliary nozzle cylinders are in the open state (A), the valve needle 9 is separated, the hot runner is connected, and the injection molding machine injects glue.

[0025] like Figure 4 and Figure 5 The figure shows the state of the cylinder valve needle ejecting the material storage cake. Figure 4 In the middle, after injection, the main and auxiliary hot nozzle valve needles are closed; Figure 5 Middle: The state where the sleeve-type needle valve hot nozzle assembly (sleeve needle) B moves and the storage cake (4) is ejected (C).

[0026] Here’s how it works:

[0027] The main and auxiliary hot nozzles are docked with the moving fixed mold, and the main and auxiliary hot nozzle needle valves are opened to connect the injection molding machine with the stack mold hot runner. The hot melt plastic in the injection molding machine is injected into the product cavity through the runner, and then the main and auxiliary nozzle valve needles close the hot runner.

[0028] When the injection molding is completed, the movable and fixed molds are opened, and the ejection system of the injection molding machine ejects the injection molded product (8), the sleeve needle arranged in the valve needle of the auxiliary hot nozzle synchronously ejects the process storage cake (4) at the junction of the main and auxiliary hot nozzles, thereby ensuring that the junction surface of the main and auxiliary hot nozzles is clean and the reciprocating cycle of the mold works normally.

[0029] exist( Figure 2 ) in the embodiment, with ( Figure 1 ) is different in that: the sleeve-type needle valve ejection assembly (101) is arranged on the main hot nozzle (202), the sleeve-type needle valve ejection assembly (101) is after the movable and fixed molds are closed, and the main and auxiliary hot nozzle needle valves ( Figure 6 When the injection is started in steps 1 and 2), the sleeve needle (3) pushes the process storage cake (4) into the hot runner of the movable mold auxiliary hot nozzle (102) (the process storage cake (4) will be melted in the hot runner), thereby ensuring that the main and auxiliary hot nozzles are clean and the mold reciprocating cycle works normally. As shown in the figure ( Figure 2 )and( Figure 6 ) as shown.

[0030] The above-mentioned ejector needle assembly (101) can be driven by pneumatic, hydraulic, electromagnetic or mechanical means. In the above patent, the valve needle of the valve is explained as follows: the valve needle is the hot nozzle flow channel switch, and the middle ejector needle pushes the process cake (4).

[0031] The above description is only for a two-layer stack mold and is applicable to injection molds with multi-layer stack molds and hot nozzles connected to needle valves. Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not limited to this embodiment. Although the present invention has been described in detail with reference to the aforementioned embodiment, those skilled in the art can still modify the technical solutions described in the aforementioned embodiment or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A hot runner stack injection mold sleeve needle valve hot nozzle, its structure: a stacking mold plate assembly consisting of a movable mold (1) and a first fixed mold (21) and a second fixed mold (22), a main and auxiliary hot nozzle assembly consisting of an auxiliary hot nozzle (102) and a main hot nozzle (202), and a sleeve needle valve ejection assembly (101); wherein, The auxiliary hot nozzle (102) is arranged on a hot runner system (5) composed of a runner plate (501) and a product hot nozzle (502), and together they constitute a movable mold (1); the main hot nozzle (202) is arranged on the first fixed mold (21), and the rear end of the main hot nozzle (202) is connected to the injection molding machine nozzle (3); In addition, a process material cake (4) is provided at the joint of the main hot nozzle (202) and the auxiliary hot nozzle (102); the auxiliary hot nozzle (102) and the main hot nozzle (202) move toward each other as the first fixed mold (21), the movable mold (1) and the second fixed mold (22) are opened and closed, connecting the movable and fixed molds with the injection molding machine flow channel, and the valve needle in the nozzle closes or connects the entire hot runner; the main hot nozzle (202) and the auxiliary hot nozzle (102) are both needle valve type hot nozzles, and the process material cake (4) is provided on the contact surface of the two nozzles.

2. The hot runner stack injection mold sleeve needle valve nozzle according to claim 1, characterized in that: The sleeve-type needle valve ejection assembly (101) is arranged on the auxiliary hot nozzle (102) of the movable mold (1). After the mold is opened, the sleeve-type needle valve ejection assembly and the injection molding machine eject the product while ejecting the process cake (4) at the connection point between the main hot nozzle (202) and the auxiliary hot nozzle (102).

3. The hot runner stack injection mold sleeve needle valve nozzle according to claim 1, characterized in that: The sleeve-type needle valve ejection assembly (101) is arranged on the fixed mold main hot nozzle (202). After the movable and fixed molds are closed and the needle valves of the main and auxiliary hot nozzles are opened, the sleeve needle on the fixed mold hot nozzle pushes the process cake (4) into the hot runner of the movable mold auxiliary hot nozzle (102).

4. The hot runner stack injection mold sleeve needle valve nozzle according to claim 2 or 3, characterized in that: The sleeve needle in the sleeve needle valve ejection assembly (101) is driven pneumatically, hydraulically, electromagnetically or mechanically.

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