Separating type air cylinder single-point needle valve hot nozzle

Abstract

The utility model provides a separated air cylinder single-point needle valve hot nozzle. The separated air cylinder single-point needle valve hot nozzle comprises an air cylinder unit, an injection nozzle body, a hot nozzle body, a hot nozzle heating ring and a valve needle assembly, wherein the injection nozzle body is positioned in the air cylinder unit; the hot nozzle heating ring extends outwards from one side of the air cylinder unit; 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 utility model relates to single point needle valve cylinder assembly technical field especially relates to a kind of separated cylinder single point needle valve hot nozzle, which can effectively avoid the influence of cylinder heat quantity, and the cylinder assembly can be quickly disassembled. [BACKGROUND]

[0002] Hot runner industry is named hot nozzle by the type of gate, generally divided into open hot nozzle and needle valve hot nozzle two types, for needle valve hot nozzle, its structure part is generally composed of cylinder body, piston, valve needle, hot nozzle body, hot nozzle heater, gate etc., single point needle valve hot nozzle in prior art, roughly including cylinder body, piston, hot nozzle body, valve needle, flow channel and gate, and the installation center size distance of cylinder will have a minimum value requirement (generally 70MM), in the mold of usually multi-cavity, there are some problems, such as the center distance of product arrangement is large, needle valve hot nozzle installation structure design can be realized without being affected, but when some small size products are encountered, if the old needle valve hot nozzle assembly size is used to carry out mold arrangement, it will cause great waste of mold production cost, and the above structure further affects the actual assembly and disassembly of 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, which comprises a cylinder body; the cylinder body is provided with a piston at the end; one end of the piston is fixed with the cylinder body, and the other end is connected with at least one valve needle; the cylinder core of the cylinder body is in a middle-through structure, and a valve needle positioning table is arranged in the middle part of the cylinder core; the valve needle extends to the lower part of the cylinder body through the valve needle positioning table; the lower part of the cylinder body is provided with a hot nozzle body; the hot nozzle body is provided with at least one flow channel; and the end of the hot nozzle body is provided with at least one gate, wherein the hot runner multi-point integrated needle valve hot nozzle of the utility model can drive multiple valve needles to move up and down synchronously through the same piston to achieve the opening and closing control of the gate, improve the limitation requirement of the installation size of the cylinder in the prior art, enable the products with small size to also be produced by injection molding using the needle valve hot nozzle, so that the mold manufacturing cost can be saved, energy can be saved and environmental protection can be realized, and automatic injection molding production can be realized.

[0004] Although the above-mentioned prior art improves the assembly and arrangement effect to some extent, it still has shortcomings, cannot well meet the needs of actual application, and needs to be further improved and improved. [UTILITY MODEL CONTENTS]

[0005] The existing problems solved by the present application are:

[0006] In existing multi-cavity molds, some problems often arise. For example, when the center distance of the product arrangement is large, the installation structure design of the needle valve hot nozzle can be achieved without affecting it. However, when dealing with some smaller products, if the mold arrangement is carried out according to the assembly dimensions of the old needle valve hot nozzle, it will result in a huge waste of mold production costs. The above structure also further affects the actual assembly and disassembly of the product.

[0007] The solution to the technical problem of this utility model is:

[0008] A split-type cylinder single-point needle valve hot nozzle is provided, including a cylinder unit, an injection nozzle body 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 includes a sealing needle connector and an opening needle connector connected to one side of the cylinder unit; the cylinder unit includes a cylinder top cover, a cylinder body, a cylinder piston inside the cylinder body, and a cylinder base at the bottom of the cylinder body; the cylinder base is connected to the cylinder body by base screws; it also includes a piston push block matched and connected to the cylinder piston; both sides of the piston push block are connected to the cylinder piston by push block screws; an injection nozzle core is provided on the outer side of the injection nozzle body; and a through hole for exposing the injection nozzle core is opened at the center of the cylinder top cover; gas drives the cylinder piston, and the piston push block drives the valve needle assembly to move up and down, thereby realizing the opening and closing action of the valve needle assembly; the valve needle assembly includes a valve needle and a valve needle sleeve; it also includes an injection nozzle heating coil on the outer side of the injection nozzle body.

[0009] Preferably, a gas channel is formed inside the heating coil of the heating nozzle and the injection nozzle body; the gas channel is connected to the injection nozzle core; and an opening is formed at one end of the heating coil of the heating nozzle.

[0010] Preferably, the push block screws are arranged symmetrically to each other; the bottom sides of the cylinder piston are L-shaped to be embedded in the push block screws.

[0011] Preferably, the valve needle assembly is located at the center of the inner side 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 chrome structural layer, and the outer surface of the hard chrome structural layer is coated with a heat-resistant and non-stick layer; the outer surface of the hard chrome structural layer is covered with nanopores to form a nanopore surface, and the heat-resistant and non-stick layer is tightly bonded to the nanopore surface of the hard chrome structural layer by an integral injection molding method to form an integral structure.

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

[0015] Compared with the prior art, the utility model discloses a kind of single-point needle valve hot nozzle of separate type cylinder, by simultaneously setting cylinder unit, injection nozzle body 11 in the cylinder unit inside, hot nozzle body 19, hot nozzle heating ring 15 extending from the side of the cylinder unit outward and valve needle assembly, still include with the needle sealing connector 16 and needle opening connector 17 being connected with the side of the cylinder unit;The cylinder unit includes cylinder top cover 12, cylinder barrel 13, cylinder piston 131 in the inboard of the cylinder barrel 13 and cylinder base 14 at the bottom of the cylinder barrel 13, the cylinder base 14 is connected with the cylinder barrel 13 by base screw 141;Still include piston pusher 18 being matched with the cylinder piston 131 connection, the both sides of the piston pusher 18 are connected with the cylinder piston 131 by pusher screw 132 respectively, injection nozzle body 11 outside is provided with injection nozzle core 111, and through hole for exposing injection nozzle core 111 is set in the center position of the cylinder top cover 12, gas drives the cylinder piston 131, the piston pusher 18 drives the valve needle assembly, and up-down action is further realized the opening and closing action of the valve needle assembly;The valve needle assembly includes valve needle 193 and valve needle sleeve 192;Still include injection nozzle heating ring 191 in the outside of injection nozzle body 11, can preferably avoid cylinder heat-affected quantity in actual application process, quick disassembly cylinder assembly, guarantee single valve hot nozzle service life. [SUMMARY]

[0016] Fig. 1 And Fig. 2 It is the three-dimensional state structure schematic diagram of the utility model discloses a kind of single-point needle valve hot nozzle of separate type cylinder.

[0017] Fig. 3 It is the sectional state structure schematic diagram of the utility model discloses a kind of single-point needle valve hot nozzle of separate type cylinder.

[0018] In the drawing:

[0019] Injection nozzle body 11;Injection nozzle core 111;Cylinder top cover 12;Cylinder barrel 13;Cylinder piston 131;Pusher screw 132;Cylinder base 14;Hot nozzle heating ring 15;Needle sealing connector 16;Needle opening connector 17;Piston pusher 18;Hot nozzle body 19;Injection nozzle heating ring 191;Valve needle sleeve 192;Valve needle 193. [DETAILED DESCRIPTION]

[0020] In order to make the purpose of the utility model, technical scheme and advantage more clear and obvious, the utility model is further explained in detail in the following with the aid of drawing and example.

[0021] It should be understood that the specific embodiments described herein are merely for the purpose of explanation and are not intended to limit the present application.

[0022] Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0023] It should be noted that when a component is referred to as being "fixed" to another component, it can be directly on the other component or intervening components can also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components can also be present.

[0024] Unless otherwise defined, 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 application belongs.

[0025] The terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0026] Some embodiments of the present application will now be described in detail in connection with the accompanying drawings. The following embodiments and features can be combined with each other unless otherwise specified.

[0027] Please refer to Figs. 1 to 3 The present application discloses a separate cylinder single-point needle valve hot nozzle 1, which comprises a cylinder unit, an injection nozzle body 11 inside the cylinder unit, a hot nozzle body 19, a hot nozzle heating ring 15 extending outward from one side of the cylinder unit, and a valve needle assembly.

[0028] The cylinder unit comprises a cylinder top cover 12, a cylinder barrel 13, a cylinder piston 131 inside the cylinder barrel 13, and a cylinder base 14 at the bottom of the cylinder barrel 13. The cylinder base 14 is connected to the cylinder barrel 13 by base screws 141. It also comprises a piston push block 18 matched with the cylinder piston 131. The piston push block 18 is connected to the cylinder piston 131 on both sides by push block screws 132.

[0029] The above structure design facilitates the separation of the cylinder and the base, and further disassembles the hot nozzle components.

[0030] The injection nozzle body 11 is provided with an injection nozzle core 111 outside, and a through hole is formed in the center of the cylinder head 12 to expose the injection nozzle core 111; the gas drives the cylinder piston 131, the piston push block 18 drives the valve needle assembly, and the up-down action realizes 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] The injection nozzle heating ring 191 is also provided outside the injection nozzle body 11.

[0032] The application simultaneously provides a cylinder unit, an injection nozzle body 11 inside the cylinder unit, a hot nozzle body 19, a hot nozzle heating ring 15 extending outward from one side of the cylinder unit, and a valve needle assembly; the needle sealing connector 16 and the needle opening connector 17 are connected to one side of the cylinder unit; the cylinder unit includes a cylinder head 12, a cylinder barrel 13, a cylinder piston 131 inside the cylinder barrel 13, and a cylinder base 14 at the bottom of the cylinder barrel 13; the cylinder base 14 is connected to the cylinder barrel 13 by a base screw 141; the piston push block 18 is matched and connected to the cylinder piston 131; the injection nozzle body 11 is provided with an injection nozzle core 111 outside; and a through hole is formed in the center of the cylinder head 12 to expose the injection nozzle core 111; the gas drives the cylinder piston 131, the piston push block 18 drives the valve needle assembly, and the up-down action realizes 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; the injection nozzle heating ring 191 is also provided outside the injection nozzle body 11, which can better avoid the influence of cylinder heating, quickly disassemble the cylinder assembly, and ensure the service life of the single-valve hot nozzle.

[0033] In some other embodiments, the hot nozzle heating ring 15 and the injection nozzle body 11 are provided with a gas passage; the gas passage is in communication with the injection nozzle core 111; and an opening is formed at one end of the hot nozzle heating ring 15.

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

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

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

[0037] In some other embodiments, the outer surface of the valve needle 193 is plated with a hard chrome structure layer, the outer surface of the hard chrome structure layer is coated with a heat-resistant anti-sticking layer; the outer surface of the hard chrome structure layer is covered with nano-pores to form a nano-porous surface, and the heat-resistant anti-sticking layer is integrally formed with the nano-porous surface of the hard chrome structure layer by means of integral injection molding.

[0038] The technical effects of solving the technical problems of the present application are as follows:

[0039] The single-point needle valve separated cylinder of the present application is simple and fast to install, independent to disassemble for after-sales maintenance, protects the accessories from being damaged, and guarantees the service life of the single-valve hot nozzle.

[0040] The present patent design function, the separated cylinder, is assembled by 1, 2, and 3 parts, and when the cylinder body is disassembled, only two fixing screws 13 and 14 need to be disassembled, so that the cylinder assembly and the hot nozzle part can be separated; when the single-valve hot nozzle is maintained, there is plastic inside the flow channel, which needs to be heated before the hot nozzle part can be disassembled for maintenance, and the cylinder sealing element will solidify and fail or reduce the service life after being heated to the limit, so the present patent structure avoids the influence of heat on the cylinder, quickly disassembles the cylinder assembly, and guarantees the service life of the single-valve hot nozzle.

[0041] Compared with the prior art, the single-point needle valve hot nozzle 1 of the separated cylinder of the present application is provided with a cylinder unit, an injection nozzle body 11 inside the cylinder unit, a hot nozzle body 19, a hot nozzle heating ring 15 extending outward from one side of the cylinder unit, and a valve needle assembly; further comprising a needle sealing connecting head 16 and a needle opening connecting head 17 connected to one side of the cylinder unit; the cylinder unit comprises a cylinder top cover 12, a cylinder body 13, a cylinder piston 131 inside the cylinder body 13, and a cylinder base 14 at the bottom of the cylinder body 13; the cylinder base 14 is connected to the cylinder body 13 by a base screw 141; further comprising a piston push block 18 matched with the cylinder piston 131; the two sides of the piston push block 18 are connected to the cylinder piston 131 by push block screws 132; the outer side of the injection nozzle body 11 is provided with an injection nozzle core 111; and a through hole for exposing the injection nozzle core 111 is formed in the center of the cylinder top cover 12; the cylinder piston 131 is driven by gas, the piston push block 18 drives the valve needle assembly, and the valve needle assembly is opened and closed by up and down movement; the valve needle assembly comprises a valve needle 193 and a valve needle sleeve 192; further comprising an injection nozzle heating ring 191 outside the injection nozzle body 11, which can better avoid the influence of heat on the cylinder, quickly disassemble the cylinder assembly, and guarantee the service life of the single-valve hot nozzle.

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

Claims

1. A split cylinder single point needle valve hot tip, characterized by: The utility model provides a kind of injection molding machine, including cylinder unit, injection nozzle body in the inside of the cylinder unit, hot nozzle body, hot nozzle heating ring extending from the side of the cylinder unit outward and valve needle assembly;It further includes needle sealing connector and needle opening connector connected with the side of the cylinder unit;The cylinder unit includes cylinder top cover, cylinder barrel, cylinder piston in the inside of the cylinder barrel and cylinder base in the bottom of the cylinder barrel;The cylinder base is connected with the cylinder barrel by base screw;It further includes piston push block matched with the cylinder piston;The piston push block is connected with the cylinder piston by push block screw on both sides respectively;Injection nozzle core is provided outside the injection nozzle body;And through hole for exposing the injection nozzle core is set in the center position of the cylinder top cover;Gas drives the cylinder piston, and the piston push block drives the valve needle assembly, and the valve needle assembly is opened and closed in up-down action to realize the opening and closing action;The valve needle assembly includes valve needle and valve needle sleeve;It further includes injection nozzle heating ring outside the injection nozzle body.

2. A split cylinder single-point needle valve hot nozzle as defined in claim 1, characterized in that: The hot nozzle heating ring and the inside of the injection nozzle body are provided with gas passage;The gas passage is communicated with the injection nozzle core;It further includes opening in the end head position of the hot nozzle heating ring.

3. A split cylinder single-point needle valve hot nozzle as defined in claim 1, wherein: The push block screw is symmetrically arranged;The bottom of the cylinder piston is L-shaped, for embedding the push block screw.

4. A split 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 in the center position inside the cylinder unit.

5. A split cylinder single-point needle valve hot nozzle as defined in claim 1 wherein: Sealing ring is arranged between the cylinder base and the cylinder barrel.

6. A split cylinder single-point needle valve hot nozzle as defined in claim 1, wherein: Hard chrome structure layer is plated on the outer surface of the valve needle, and heat-resistant anti-sticking layer is coated on the outer surface of the hard chrome structure layer;The outer surface of the hard chrome structure layer is covered with nano-pores to form a nano-porous surface, and the heat-resistant anti-sticking layer is integrally formed with the nano-porous surface of the hard chrome structure layer by one-piece injection molding.

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