Separating type air cylinder single-point needle valve hot nozzle

Abstract

The invention provides a separated type air cylinder single-point needle valve hot nozzle. The separated type air cylinder single-point needle valve hot nozzle comprises an air cylinder unit, an injection nozzle body located in the air cylinder unit, a hot nozzle body, a hot nozzle heating ring extending outwards from one side of the air cylinder unit and a valve needle assembly. The needle sealing connector and the needle opening connector are connected with one side of the air cylinder unit; the air cylinder unit comprises an air cylinder top cover, an air cylinder body, an air cylinder piston located on the inner side of the air cylinder body and an air cylinder base located at the bottom of the air cylinder body. The air cylinder base is connected with the air cylinder body through a base screw; the piston push block is connected with a piston of the air cylinder in a matched manner; the two sides of the piston push block are connected with the air cylinder piston through push block screws respectively. An injection nozzle core is arranged on the outer side of the injection nozzle body; according to the single-point needle valve separation type air cylinder, assembling accessories are easy and fast to install, the air cylinder is independently disassembled in after-sales maintenance, the accessories are protected against damage, and the service life of a single-valve hot nozzle is guaranteed.

Description

[Technical field]

[0001] The invention relates to the technical field of single-point needle valve cylinder components, and in particular to a detachable cylinder single-point needle valve hot nozzle which can effectively prevent the cylinder from being affected by heat and can quickly disassemble the cylinder component. [Background Technology]

[0002] The hot runner industry names the hot nozzles according to the type of gate, which are generally divided into two types: open hot nozzles and needle valve hot nozzles. For the needle valve hot nozzle, its structural parts are generally composed of a cylinder body, a piston, a valve needle, a hot nozzle body, a hot nozzle heater, a gate driver, etc. The single-point needle valve hot nozzle in the prior art generally includes a cylinder body, a piston, a hot nozzle body, a valve needle, a runner and a gate driver, and there is a minimum requirement for the installation center size distance of the cylinder (generally 70MM). In the usual one-mold multi-cavity mold, there will be some problems. For example, when the center distance of the product is large, it can be achieved without affecting the installation structure design of the needle valve hot nozzle. However, when encountering some smaller products, if the mold is arranged according to the assembly size requirements of the old needle valve hot nozzle, it will cause a great waste of mold production costs. The above structure also further affects the actual assembly and disassembly of the product.

[0003] For example, the utility model patent with patent number CN201820125079.4 and patent name "A hot runner multi-point integrated needle valve hot nozzle" specifically discloses a hot runner multi-point integrated needle valve hot nozzle, including a cylinder body; a piston is installed at the end of the cylinder body; one end of the piston is fixed to the cylinder body, and the other end is connected to at least one valve needle; the cylinder core of the cylinder body is a central through structure, and a valve needle positioning platform is arranged in the middle of the cylinder core; the valve needle passes through the valve needle positioning platform and extends to the lower part of the cylinder body; a hot nozzle body is installed at the lower part of the cylinder body; at least one flow channel is arranged in the hot nozzle body; at least one gate is installed at the end of the hot nozzle body. The hot runner multi-point integrated needle valve hot nozzle of the utility model drives multiple valve needles to move up and down synchronously by the same piston to achieve the opening and closing control of the gate, improves the restriction requirements on the cylinder installation size in the prior art, so that products with smaller sizes can also be produced by injection molding using needle valve hot nozzles, thereby saving mold manufacturing costs, saving energy and protecting the environment, and realizing automated injection molding production.

[0004] Although the above-mentioned prior art has improved the effects of assembly and alignment to a certain extent, it still has some shortcomings and cannot well meet the needs of practical applications, and further improvement and enhancement are needed. [Summary of the invention]

[0005] The problems existing in the prior art solved by this application are:

[0006] In the prior art one-mold multi-cavity molds, some problems often occur. For example, when the center distance of the product is large, it is possible to achieve a structural design that does not affect the installation of the needle valve hot nozzle. However, when encountering some smaller products, if the mold is arranged according to the assembly size requirements of the old needle valve hot nozzle, it will cause a great waste of mold production costs. The above structure will further affect the actual assembly and disassembly of the product.

[0007] The solution to the technical problem of the present invention is:

[0008] A separate cylinder single-point needle valve hot nozzle is provided, comprising a cylinder unit, an injection nozzle body located inside the cylinder unit, a hot nozzle body, a hot nozzle heating coil extending outward from one side of the cylinder unit and a valve needle assembly; it also comprises a sealing needle connector and an opening needle connector connected to one side of the cylinder unit; the cylinder unit comprises a cylinder top cover, a cylinder body, a cylinder piston located inside the cylinder body and a cylinder base located at the bottom of the cylinder body; the cylinder base is connected to the cylinder body through a base screw; it also comprises a piston push block matched with the cylinder piston; the two sides of the piston push block are respectively connected to the cylinder piston through push block screws; an injection nozzle core is arranged on the outside of the injection nozzle body; and a through hole for exposing the injection nozzle core is opened in the center of the cylinder top cover; the gas drives the cylinder piston, and the piston push block drives the valve needle assembly, which moves up and down to realize the opening and closing action of the valve needle assembly; the valve needle assembly comprises a valve needle and a valve needle sleeve; it also comprises an injection nozzle heating coil located outside the injection nozzle body.

[0009] Preferably, a gas passage is provided inside the heating coil of the hot nozzle and the injection nozzle body; the gas passage is communicated with the injection nozzle core; and also includes an opening provided at one end of the heating coil of the hot nozzle.

[0010] Preferably, the push block screws are arranged symmetrically with each other; and the two sides of the bottom of the cylinder piston are L-shaped for embedding the push block screws.

[0011] Preferably, the valve needle assembly is located at the inner center of the cylinder unit.

[0012] Preferably, a sealing ring is provided between the cylinder base and the cylinder body.

[0013] Preferably, the outer surface of the valve needle is plated with a hard chromium structural layer, and the outer surface of the hard chromium structural layer is coated with a heat-resistant anti-sticking layer; the outer surface of the hard chromium structural layer is covered with nanopores to form a nanoporous surface, and the heat-resistant anti-sticking layer is tightly combined with the nanoporous surface of the hard chromium structural layer by integral injection molding to form an integrated structure.

[0014] The technical effects of solving the technical problem in this application are as follows:

[0015] Compared with the prior art, the present invention is a separate cylinder single-point needle valve hot nozzle, which is provided with a cylinder unit, an injection nozzle body 11 located inside the cylinder unit, a hot nozzle body 19, a hot nozzle heating coil 15 extending outward from one side of the cylinder unit, and a valve needle assembly, and also includes a sealing needle connector 16 and an opening needle connector 17 connected to one side of the cylinder unit; the cylinder unit includes a cylinder top cover 12, a cylinder body 13, a cylinder piston 131 located inside the cylinder body 13, and a cylinder base 14 located at the bottom of the cylinder body 13, and the cylinder base 14 is connected to the cylinder body 13 through a base screw 141; and also includes a piston push block 1 matched with the cylinder piston 131. 8. Both sides of the piston push block 18 are connected to the cylinder piston 131 through push block screws 132 respectively. An injection nozzle core 111 is arranged on the outside of the injection nozzle body 11, and a through hole for exposing the injection nozzle core 111 is opened in the central part of the cylinder top cover 12. The gas drives the cylinder piston 131, and the piston push block 18 drives the valve needle assembly to move up and down to realize the opening and closing action of the valve needle assembly; the valve needle assembly includes a valve needle 193 and a valve needle sleeve 192; it also includes an injection nozzle heating ring 191 located on the outside of the injection nozzle body 11. In actual application, it can better prevent the cylinder from being affected by heat, quickly disassemble the cylinder assembly, and ensure the service life of the single valve hot nozzle. [Drawings]

[0016] Figure 1 and Figure 2 The utility model is a three-dimensional structural schematic diagram of a separated cylinder single-point needle valve hot nozzle of the present invention.

[0017] Figure 3 The present invention is a schematic diagram of the cross-sectional structure of a separate cylinder single-point needle valve hot nozzle.

[0018] In the figure:

[0019] Injection nozzle body 11; injection nozzle core 111; cylinder top cover 12; cylinder body 13; cylinder piston 131; push block screw 132; cylinder base 14; hot nozzle heating coil 15; sealing needle connector 16; opening needle connector 17; piston push block 18; hot nozzle body 19; injection nozzle heating coil 191; valve needle sleeve 192; valve needle 193. [Specific implementation method]

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0022] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0024] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0025] The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0026] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0027] See also Figures 1 to 3 The present invention discloses a separate cylinder single-point needle valve hot nozzle 1, which comprises a cylinder unit, an injection nozzle body 11 located inside the cylinder unit, a hot nozzle body 19, a hot nozzle heating coil 15 extending outward from one side of the cylinder unit, and a valve needle assembly; and also comprises a sealing needle connector 16 and an opening needle connector 17 connected to one side of the cylinder unit;

[0028] The cylinder unit includes a cylinder head cover 12, a cylinder body 13, a cylinder piston 131 located inside the cylinder body 13, and a cylinder base 14 located at the bottom of the cylinder body 13; the cylinder base 14 is connected to the cylinder body 13 through a base screw 141; and also includes a piston push block 18 matched with the cylinder piston 131; both sides of the piston push block 18 are connected to the cylinder piston 131 through push block screws 132 respectively;

[0029] The above structural design facilitates the separation of the cylinder and the base, and then the removal of the hot nozzle component.

[0030] The injection nozzle core 111 is arranged on the outside of the injection nozzle body 11; and a through hole for exposing the injection nozzle core 111 is opened at the center of the cylinder top cover 12; the gas drives the cylinder piston 131, and the piston push block 18 drives the valve needle assembly to move up and down to realize the opening and closing action of the valve needle assembly; the valve needle assembly includes a valve needle 193 and a valve needle sleeve 192;

[0031] It also includes an injection nozzle heating ring 191 located outside the injection nozzle body 11.

[0032] The present application simultaneously arranges a cylinder unit, an injection nozzle body 11 located inside the cylinder unit, a hot nozzle body 19, a hot nozzle heating coil 15 extending outward from one side of the cylinder unit, and a valve needle assembly; it also includes a sealing needle connector 16 and an opening needle connector 17 connected to one side of the cylinder unit; the cylinder unit includes a cylinder top cover 12, a cylinder body 13, a cylinder piston 131 located inside the cylinder body 13, and a cylinder base 14 located at the bottom of the cylinder body 13; the cylinder base 14 is connected to the cylinder body 13 by a base screw 141; it also includes a piston push block 18 matched with the cylinder piston 131; the piston push block 18 has two The two sides are connected with the cylinder piston 131 through push block screws 132 respectively; an injection nozzle core 111 is arranged on the outside of the injection nozzle body 11; and a through hole for exposing the injection nozzle core 111 is opened in the central part of the cylinder top cover 12; gas drives the cylinder piston 131, and the piston push block 18 drives the valve needle assembly to move up and down to realize the opening and closing action of the valve needle assembly; the valve needle assembly includes a valve needle 193 and a valve needle sleeve 192; it also includes an injection nozzle heating ring 191 located on the outside of the injection nozzle body 11. In actual application, it can better avoid the cylinder from being affected by heat, quickly disassemble the cylinder assembly, and ensure the service life of the single valve hot nozzle.

[0033] In some other embodiments, a gas passage is opened inside the hot nozzle heating coil 15 and the injection nozzle body 11; the gas passage is connected to the injection nozzle core 111; and also includes an opening opened at one end of the hot nozzle heating coil 15.

[0034] In some other embodiments, the push block screws 132 are symmetrically arranged with each other; the two sides of the bottom of the cylinder piston 131 are L-shaped for embedding the push block screws 132 .

[0035] In some other embodiments, the valve needle assembly is located at the center of the inner side of the cylinder unit.

[0036] In some other embodiments, a sealing ring is provided between the cylinder base 14 and the cylinder body 13 .

[0037] In some other embodiments, the outer surface of the valve needle 193 is plated with a hard chromium structural layer, and the outer surface of the hard chromium structural layer is coated with a heat-resistant anti-sticking layer; the outer surface of the hard chromium structural layer is covered with nanopores to form a nanoporous surface, and the heat-resistant anti-sticking layer is tightly combined with the nanoporous surface of the hard chromium structural layer by integral injection molding to form an integrated structure.

[0038] The technical effects of solving the technical problem in this application are as follows:

[0039] The single-point needle valve separate cylinder of the present application has simple and quick assembly accessories and the cylinder can be independently disassembled for after-sales maintenance, thereby protecting the accessories from damage and ensuring the service life of the single-valve hot nozzle.

[0040] This patented design function is a split cylinder, which is assembled from parts 1, 2, and 3. When disassembling the cylinder body, you only need to remove the fixing screws 13 and 14 to separate the cylinder assembly from the hot nozzle assembly. When maintaining the single-valve hot nozzle, there is plastic inside the flow channel, and high-temperature heating is required before the hot nozzle assembly can be removed for repair. The cylinder seal will solidify and fail or its service life will be reduced after extreme heating. This patented structure prevents the cylinder from being affected by heat, quickly disassembles the cylinder assembly, and ensures the service life of the single-valve hot nozzle.

[0041] Compared with the prior art, the present invention is a separate cylinder single-point needle valve hot nozzle 1 by simultaneously setting a cylinder unit, an injection nozzle body 11 located inside the cylinder unit, a hot nozzle body 19, a hot nozzle heating coil 15 extending outward from one side of the cylinder unit, and a valve needle assembly; it also includes a sealing needle connector 16 and an opening needle connector 17 connected to one side of the cylinder unit; the cylinder unit includes a cylinder top cover 12, a cylinder body 13, a cylinder piston 131 located inside the cylinder body 13, and a cylinder base 14 located at the bottom of the cylinder body 13; the cylinder base 14 is connected to the cylinder body 13 through a base screw 141; it also includes a piston push block 1 matched with the cylinder piston 131 8; the two sides of the piston push block 18 are connected to the cylinder piston 131 by push block screws 132 respectively; an injection nozzle core 111 is arranged on the outside of the injection nozzle body 11; and a through hole for exposing the injection nozzle core 111 is opened in the central part of the cylinder top cover 12; the gas drives the cylinder piston 131, and the piston push block 18 drives the valve needle assembly to move up and down to realize the opening and closing action of the valve needle assembly; the valve needle assembly includes a valve needle 193 and a valve needle sleeve 192; it also includes an injection nozzle heating ring 191 located on the outside of the injection nozzle body 11. In actual application, it can better avoid the cylinder from being affected by heat, quickly disassemble the cylinder assembly, and ensure the service life of the single valve hot nozzle.

[0042] The above-described embodiments of the present invention do not constitute a limitation on the protection scope of the present invention. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A separate cylinder single-point needle valve hot nozzle, characterized in that: The present invention relates to a novel air-tight seal system, wherein the air-tight seal system comprises an air-tight seal member, a heat-tight seal member and a heat-tight seal member. The air-tight seal member comprises an air-tight seal member, a seal member and a heat-tight seal member. The air-tight seal member comprises an air-tight seal member, an air-tight seal member and a heat-tight seal member. The air-tight seal member comprises an air-tight seal member, an air-tight seal member and an air-tight seal member. The air-tight seal member comprises an air-tight seal member, an air-tight seal member and an air-tight seal member. The air-tight seal member comprises an air-tight seal member, an air-tight seal member and an air-tight seal member.

2. A separate cylinder single-point needle valve hot nozzle as claimed in claim 1, characterized in that: A gas channel is provided inside the heating coil of the hot nozzle and the injection nozzle body; the gas channel is communicated with the injection nozzle core; and also includes an opening provided at one end of the heating coil of the hot nozzle.

3. A separate cylinder single-point needle valve hot nozzle as claimed in claim 1, characterized in that: The push block screws are arranged symmetrically with each other; the two sides of the bottom of the cylinder piston are L-shaped for embedding the push block screws.

4. A separate cylinder single-point needle valve hot nozzle as claimed in any one of claims 1 to 3, characterized in that: The valve needle assembly is located at the inner center of the cylinder unit.

5. A separate cylinder single-point needle valve hot nozzle as claimed in claim 1, characterized in that: A sealing ring is arranged between the cylinder base and the cylinder body.

6. A separate cylinder single-point needle valve hot nozzle as claimed in claim 1, characterized in that: The outer surface of the valve needle is plated with a hard chrome structural layer, and the outer surface of the hard chrome structural layer is coated with a heat-resistant anti-sticking layer; the outer surface of the hard chrome structural layer is covered with nanopores to form a nanoporous surface, and the heat-resistant anti-sticking layer is tightly combined with the nanoporous surface of the hard chrome structural layer through integral injection molding to form an integrated structure.

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