WO2021115182A1 - 一种用于注塑机的三通阀结构 - Google Patents

一种用于注塑机的三通阀结构 Download PDF

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Publication number
WO2021115182A1
WO2021115182A1 PCT/CN2020/133411 CN2020133411W WO2021115182A1 WO 2021115182 A1 WO2021115182 A1 WO 2021115182A1 CN 2020133411 W CN2020133411 W CN 2020133411W WO 2021115182 A1 WO2021115182 A1 WO 2021115182A1
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WIPO (PCT)
Prior art keywords
hole
valve core
injection molding
molding machine
way valve
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PCT/CN2020/133411
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English (en)
French (fr)
Inventor
谈刚强
周新文
周辉军
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宁波方力科技股份有限公司
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Publication of WO2021115182A1 publication Critical patent/WO2021115182A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/18—Feeding the material into the injection moulding apparatus, i.e. feeding the non-plastified material into the injection unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid

Definitions

  • the invention belongs to the field of injection molding machines, and in particular relates to a three-way valve structure for injection molding machines.
  • Injection molding equipment is also known as injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes. Injection molding machines have a wide range of applications.
  • a three-way valve with the authorization bulletin number CN209067878U and a pre-plastic injection device using the three-way valve includes a valve body; a mounting hole that penetrates the valve body transversely; a first through hole and its shaft
  • the first connecting hole penetrates the valve body and the mounting hole and communicates with the mounting hole;
  • the first connecting hole is vertically arranged on the valve body and above the mounting hole, and the first connecting hole communicates the mounting hole with the outside of the valve body;
  • the spool is arranged transversely in the mounting hole and is movably connected with the valve body;
  • the second through hole is transversely arranged on the spool and communicates with the first connecting hole;
  • the second connecting hole is arranged on the spool and is connected to the valve body.
  • the technical problem to be solved by the present invention is to provide a three-way valve structure for an injection molding machine based on the current state of the art.
  • the technical solution adopted by the present invention to solve the above technical problems is to propose a three-way valve structure for an injection molding machine, including: a valve body with a mounting hole and a circulation hole longitudinally opened, the mounting hole and the circulation hole In communication, a feed hole and a discharge hole are opened transversely at the lower part of the valve body, and the feed hole is in communication with the mounting hole;
  • a sol cartridge which is connected to the upper end of the valve body and communicates with the flow hole
  • a glue injection cylinder which is connected to the lower end of the valve body and communicates with the feed hole
  • a rubber injection cylinder which is connected to the lower end of the valve body and communicates with the discharge hole;
  • the valve core is longitudinally movably arranged in the mounting hole, and the lower end of the valve core is movably inserted in the discharge hole and separates the discharge hole from the feed hole.
  • the raw material can drive the valve core to move upward;
  • valve core When the valve core moves upward, the lower end of the valve core separates from the discharge hole, the supply hole and the discharge hole communicate with each other, and the circulation hole and the mounting hole are separated by the upper end of the valve core .
  • a stop block is provided on one side of the valve core, a stop ball is provided on the upper end of the valve core, and the stop block is movably inserted into the discharge hole In; when the valve core moves upward, the top end of the stop ball is inserted into the lower end of the circulation hole, and the stop block is separated from the discharge hole.
  • the lower end of the valve core is provided with an inclined abutment surface, and the inclined abutment surface is located in the feed hole.
  • annular pressing surface is provided on the valve core, and the annular pressing surface is located in the mounting hole.
  • the maximum diameter of the stop ball is larger than the diameter of the flow hole.
  • a mounting seat is inserted into the lower end of the valve body, a connecting column is provided on the mounting seat, and the connecting column penetrates the feed hole and the The discharge hole extends into the mounting hole, and the valve core is movably sleeved on the connecting column.
  • the diameter of the feed hole and the diameter of the discharge hole are both larger than the diameter of the connecting column.
  • the side of the connecting column is provided with a first stop surface
  • the valve body is provided with a moving hole
  • the moving hole is provided with a second stopper.
  • the connecting column is movably inserted in the moving hole and the first stop surface movably abuts against the second stop surface.
  • the advantage of the present invention is that the valve body in the three-way valve structure for injection molding machine moves up and down to realize the communication or closure between the feed hole and the discharge hole, the flow hole and the mounting hole, and the valve body
  • the up and down movement only relies on the flow of raw materials to drive, no need to install an additional drive source, simple structure, manufacturing cost, and low maintenance and maintenance during use.
  • Figure 1 is a cross-sectional view of a three-way valve structure used in an injection molding machine according to the present invention during the material storage process;
  • FIG. 2 is a cross-sectional view of the three-way valve structure used in the injection molding machine of the present invention during the injection process;
  • Figure 3 is a front view of the valve core
  • Figure 4 is a side view of the valve core
  • Figure 5 is a cross-sectional view of the valve core
  • Figure 6 is a plan view of the mounting base.
  • valve body 1 the mounting hole 2, the flow hole 3, the feed hole 4, the discharge hole 5, the sol cylinder 6, the glue injection cylinder 7, the glue injection cylinder 8, the valve core 9, the stop block 10, the stop The ball 11, the inclined surface 12, the annular pressing surface 13, the mounting seat 14, the connecting column 15, the first stopping surface 16, the second stopping surface 17, and the moving hole 18.
  • the three-way valve structure for an injection molding machine includes: a valve body 1, which is longitudinally provided with a mounting hole 2 and a flow hole 3, the mounting hole 2 communicates with the flow hole 3, and the valve body 1
  • the lower part is transversely provided with a feed hole 4 and a discharge hole 5.
  • the feed hole 4 communicates with the mounting hole 2; the sol cylinder 6 is connected to the valve body 1 and communicates with the flow hole 3; the glue injection cylinder 7 is connected to The valve body 1 is connected to the feed hole 4; the glue injection cylinder 8 is connected to the valve body 1 and communicates with the discharge hole 5; the valve core 9 is vertically movably arranged in the mounting hole 2, when the sol cylinder 6 When feeding the material into the flow hole 3, the raw material can drive the valve core 9 to move downward. When the glue injection cylinder 7 feeds the material into the feed hole 4, the raw material can drive the valve core 9 to move upward; when the valve core 9 moves downward, The circulation hole 3, the installation hole 2 and the feed hole 4 are in communication.
  • the feed hole 4 and the discharge hole 5 are separated by the lower end of the valve core 9; when the valve core 9 moves upward, the lower end of the valve core 9 separates from the discharge hole 5.
  • the feeding hole 4 and the discharging hole 5 communicate with each other, and the circulation hole 3 and the mounting hole 2 are separated by the upper end of the valve core 9.
  • the sol cartridge 6 is used to melt the raw material. After the raw material is melted, the sol cartridge 6 squeezes the raw material into the circulation hole 3.
  • the circulation hole 3 communicates with the installation hole 2, so the raw material can enter the installation hole 2 through the circulation hole 3, because of the valve
  • the core 9 is movably arranged in the mounting hole 2, and when the raw material enters the mounting hole 2, it can contact the valve core 9, and the downward pressure of the raw material can drive the valve core 9 to move downward.
  • the flow hole 3 When setting the position, the flow hole 3, the mounting hole 2 and the feed hole 4 are in communication, and the feed hole 4 and the discharge hole 5 are separated by the lower end of the valve core 9, and then the raw material can enter the mounting hole 2 through the flow hole 3, and then Then flow from the mounting hole 2 to the feed hole 4, because the glue injection cylinder 7 communicates with the feed hole 4, and the raw material can finally flow into the glue injection cylinder 7 without entering the injection cylinder 8, achieving material storage purpose.
  • the injection cylinder 7 When the injection cylinder 7 is full of raw materials, injection starts, that is, the injection cylinder 7 conveys the raw materials to the injection cylinder 8.
  • the injection cylinder 7 communicates with the feed hole 4, and when the injection cylinder 7 discharges, the raw material enters the feed hole 4 and in contact with the valve core 9, because the injection cylinder 7 and the feed hole 4 are both provided at the lower end of the valve body 1, so when the raw material contacts the valve core 9, it can give the valve core 9 an upward direction, and the raw material can Drive the valve core 9 to move upward, and then the upper end of the valve core 9 can be inserted into the flow hole 3 and separate the flow hole 3 from the installation hole 2.
  • the lower end of the valve core 9 is separated from the discharge hole 5, the feed hole 4, the discharge hole 5 is connected, and then the raw material can enter the discharge hole 5 through the feed hole 4, and finally the raw material enters into the injection barrel 8 to achieve the purpose of injection during injection molding.
  • the up and down movement of the valve core 9 only relies on the extrusion force of the raw material as the driving source, and there is no need to add additional devices on the equipment to drive the valve core 9, reducing manufacturing costs and reducing the cost during use.
  • Maintenance and maintenance are low in difficulty, and during the switching process of material storage and injection, the response efficiency of the up and down movement of the valve core 9 is high, and it will not be affected by other structures, and the switching speed of the material storage and injection process is improved.
  • valve core 9 One side of the valve core 9 is provided with a stop block 10, and the upper end of the valve core 9 is provided with a stop ball 11, and the stop block 10 is movably inserted into the discharge hole 5; when the valve core 9 moves upward, the stop ball 11 The top end is inserted into the lower end of the circulation hole 3, and the stop block 10 is separated from the discharge hole 5.
  • the top end of the stop ball 11 can be inserted into the lower end of the flow hole 3, thereby closing the flow hole 3, so that the flow hole 3 and the mounting hole 2 are separated, and the stop block 10 is separated from the discharge hole 5. , In turn, can make the discharge hole 5 communicate with the feed hole 4.
  • the maximum diameter of the stop ball 11 is greater than the diameter of the flow hole 3. On the one hand, it is to prevent the stop ball 11 from completely entering the flow hole 3, and to ensure the smooth movement of the valve core 9 up and down. On the other hand, to ensure that the flow hole 3 can be completely isolated from the flow hole 3. Mounting hole 2.
  • the lower end of the valve core 9 is provided with an oblique abutment surface 12, which is located in the feed hole 4.
  • the raw material enters the feed hole 4 and contacts the oblique abutment surface 12, and the raw material is squeezed forward. Acting on the inclined surface 12, the forward extrusion force of the raw material can drive the valve core 9 to move upward, which can make the lower end of the valve core 9 separate from the discharge hole 5.
  • the valve core 9 separates from the discharge hole 5
  • the hole 5 communicates with the feed hole 4, and the raw material can enter the rubber injection cylinder 8 through the discharge hole 5.
  • the valve core 9 is provided with an annular pressing surface 13 which is located in the mounting hole 2.
  • the raw material enters the circulation hole 3, which can then squeeze the top of the valve core 9 and drive the valve core 9 to move downward
  • the raw material can enter the mounting hole 2, and the raw material can contact the annular pressing surface 13, and the downward pressing force of the raw material acts on the annular pressing surface 13, and then the raw material can continue to drive the valve core 9 to move down until the stop block 10 is completely inserted into the discharge hole 5.
  • the advantage of setting the annular lower pressure surface 13 is to prevent the raw material from squeezing the top of the valve core 9 If it is not enough, the stopper 10 cannot be completely inserted into the discharge hole 5.
  • a mounting seat 14 is inserted at the lower end of the valve body 1, and a connecting column 15 is provided on the mounting seat 14.
  • the connecting column 15 penetrates the feed hole 4 and the discharge hole 5 and extends into the mounting hole 2, and the valve core 9 is movably sleeved in Connect the column 15 on.
  • the mounting seat 14 is inserted into the lower end of the valve body 1, and the valve core 9 is movably sleeved on the connecting column 15, thereby ensuring that the valve core 9 can move up and down along a prescribed route.
  • the diameter of the feed hole 4 and the diameter of the discharge hole 5 are both larger than the diameter of the connecting column 15, to ensure that the valve core 9 moves up to the stopper 10 and leaves the discharge hole 5, and the feed hole 4 and the discharge hole 5 can communicate with each other.
  • the raw material in the hole 4 can bypass the connecting column 15 and enter into the discharge hole 5.
  • the side of the connecting column 15 is provided with a first stopping surface 16, the valve body 1 is provided with a moving hole 18, and the moving hole 18 is provided with a second stopping surface 17, and the connecting column 15 is movably inserted in the moving hole 18 and the first The stop surface 16 movably abuts against the second stop surface 17, and the first stop surface 16 movably abuts on the second stop surface 17, which can prevent the valve core 9 from rotating during the up and down movement.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

一种用于注塑机的三通阀结构，包括：阀体（1），其纵向开设有安装孔（2）以及流通孔（3），安装孔（2）与流通孔（3）相通，阀体（1）下部横向开设有进料孔（4）以及出料孔（5），进料孔（4）与安装孔（2）相通；阀芯（9），其纵向活动设置于安装孔（2）内，阀芯（9）下端活动插设于出料孔（5）内并将出料孔（5）和进料孔（4）隔断，当向进料孔（4）内送料时，原料能够带动阀芯（9）向上移动；当阀芯（9）向上移动时，阀芯（9）下端脱离出料孔（5），进料孔（4）、出料孔（5）相通，流通孔（3）与安装孔（2）被阀芯（9）上端隔断。与现有技术相比，该三通阀结构的优点在于：阀体（1）的上下移动仅依靠原料流动进行驱动，无需安装额外的驱动源，结构简单，制造成本及使用期间的维修和维护难度低。

Description

一种用于注塑机的三通阀结构 技术领域
本发明属于注塑机领域，具体涉及一种用于注塑机的三通阀结构。
背景技术
注塑设备又名注射成型机或注射机，它是将热塑性塑料或热固性塑料利用塑料成型模具制成各种形状的塑料制品的主要成型设备，注塑机的使用领域较广。
例如，授权公告号为CN209067878U的一种三通阀及应用有该三通阀的预塑注射装置，其包括阀体；安装孔，其横向贯穿设置于阀体上；第一通孔，其轴向贯穿阀体与安装孔且第一通孔与安装孔相通；第一连接孔，其竖向设置于阀体上并位于安装孔上方，所述第一连接孔连通安装孔与阀体外部；阀芯，其横向设置于安装孔内并与阀体活动相连；第二通孔，其横向贯穿设置于阀芯上并与第一连接孔连通；第二连接孔，其设置于阀芯上并与连通第二通孔与第一通孔；当阀芯在阀体内转动至预设位置时，所述第二通孔与第一连接孔及第二连接孔与第一通孔错开，且第一通孔与第二通孔连通，虽然其能够实现储料和射料的功能，但是其所采用的三通阀结构比较复杂，阀芯的转动还需要额外的驱动源提供动力，不仅增加制造成本，而且会提高使用期间的维修和维护难度。
发明内容
本发明所要解决的技术问题是针对现有技术的现状，而提供一种用于注塑机的三通阀结构。
本发明解决上述技术问题所采用的技术方案为：提出一种用于注塑机的三通阀结构，包括：阀体，其纵向开设有安装孔以及流通孔，所述安装 孔与所述流通孔相通，所述阀体下部横向开设有进料孔以及出料孔，所述进料孔与所述安装孔相通；
溶胶筒，其连接于所述阀体上端且与所述流通孔相通；
注胶筒，其连接于所述阀体下端且与所述进料孔相通；
射胶筒，其连接于所述阀体下端且与所述出料孔相通；
阀芯，其纵向活动设置于所述安装孔内，所述阀芯下端活动插设于所述出料孔内并将出料孔和所述进料孔隔断，当所述注胶筒向所述进料孔内送料时，原料能够带动所述阀芯向上移动；
当所述阀芯向上移动时，所述阀芯下端脱离所述出料孔，所述进料孔、所述出料孔相通，所述流通孔与所述安装孔被所述阀芯上端隔断。
在上述的一种用于注塑机的三通阀结构中，所述阀芯一侧设置有止挡块，阀芯上端设置有止挡球，所述止挡块活动插入至所述出料孔内；当所述阀芯向上移动时，所述止挡球顶端插入至所述流通孔下端，所述止挡块脱离所述出料孔。
在上述的一种用于注塑机的三通阀结构中，所述阀芯下端设置有斜抵面，所述斜抵面位于所述进料孔内。
在上述的一种用于注塑机的三通阀结构中，所述阀芯上设置有环形下压面，所述环形下压面位于所述安装孔内。
在上述的一种用于注塑机的三通阀结构中，所述止挡球最大直径大于所述流通孔直径。
在上述的一种用于注塑机的三通阀结构中，所述阀体下端插设有安装座，所述安装座上设置有连接柱，所述连接柱贯穿所述进料孔以及所述出料孔并伸入至所述安装孔内，所述阀芯活动套设于所述连接柱上。
在上述的一种用于注塑机的三通阀结构中，所述进料孔直径以及所述 出料孔直径均大于所述连接柱直径。
在上述的一种用于注塑机的三通阀结构中，所述连接柱侧面设置有第一止挡面，所述阀体上开设有移动孔，所述移动孔内设置有第二止挡面，所述连接柱活动插设于所述移动孔内且所述第一止挡面活动抵靠于所述第二止挡面。
与现有技术相比，本发明的优点在于该用于注塑机的三通阀结构中阀体上下移动实现进料孔与出料孔、流通孔和安装孔之间的联通或者关闭，阀体的上下移动仅依靠原料流动进行驱动，无需安装额外的驱动源，结构简单，制造成本，使用期间的维修和维护难度低。
附图说明
图1是本发明用于注塑机的三通阀结构储料过程时的剖面视图；
图2是本发明用于注塑机的三通阀结构射料过程时的剖面视图；
图3是阀芯的正视图；
图4是阀芯的侧视图；
图5是阀芯的剖视图；
图6是安装座的俯视图。
图中，阀体1、安装孔2、流通孔3、进料孔4、出料孔5、溶胶筒6、注胶筒7、射胶筒8、阀芯9、止挡块10、止挡球11、斜抵面12、环形下压面13、安装座14、连接柱15、第一止挡面16、第二止挡面17、移动孔18。
具体实施方式
以下是本发明的具体实施例并结合附图，对本发明的技术方案作进一步的描述，但本发明并不限于这些实施例。
如图1至图6所示，本用于注塑机的三通阀结构，包括：阀体1，其纵向开设有安装孔2以及流通孔3，安装孔2与流通孔3相通，阀体1下部横向开设有进料孔4以及出料孔5，进料孔4与安装孔2相通；溶胶筒6，其连接于阀体1上且与流通孔3相通；注胶筒7，其连接于阀体1上且与进料孔4相通；射胶筒8，其连接于阀体1上且与出料孔5相通；阀芯9，其纵向活动设置于安装孔2内，当溶胶筒6向流通孔3内送料时，原料能够带动阀芯9向下移动，当注胶筒7向进料孔4内送料时，原料能够带动阀芯9向上移动；当阀芯9向下移动时，流通孔3、安装孔2以及进料孔4三者相通，进料孔4与出料孔5被阀芯9下端隔断；当阀芯9向上移动时，阀芯9下端脱离出料孔5，进料孔4、出料孔5相通，流通孔3与安装孔2被阀芯9上端隔断。
溶胶筒6用于融化原料，原料融化后，溶胶筒6将原料挤入至流通孔3内，流通孔3与安装孔2相通，所以原料能够通过流通孔3进入至安装孔2内，因为阀芯9活动设置于安装孔2内，当原料进入至安装孔2内时能够与阀芯9相接触，进而原料的下压力能够带动阀芯9向下移动，当阀芯9向下移动至预设位置时，流通孔3、安装孔2以及进料孔4三者相通，进料孔4与出料孔5被阀芯9下端隔断，进而原料能够通过流通孔3进入安装孔2内，然后再由安装孔2内流入至进料孔4，因为注胶筒7与进料孔4相通，进而原料最终能够流入至注胶筒7内而不会进入至射胶筒8内，实现储料目的。
当注胶筒7内存满原料后开始注塑，即注胶筒7向射胶筒8输送原料，注胶筒7与进料孔4相通，注胶筒7出料时，原料进入至进料孔4内并与阀芯9相接触，因为注胶筒7以及进料孔4均设置于阀体1下端，所以原料与阀芯9接触时能够给与阀芯9一个向上的里，进而原料能够带动阀芯9 向上移动，进而阀芯9上端能够插入至流通孔3内并将流通孔3与安装孔2隔断，此时阀芯9下端脱离出料孔5，进料孔4、出料孔5相通，进而原料能够通过进料孔4进入至出料孔5内，最终原料进入至射胶筒8内，实现注塑时射料的目的。
在整个储料和射料的过程中，阀芯9的上下移动仅依靠原料的挤压力作为驱动源，无需在设备上另外增加额外的装置来驱动阀芯9，减少制造成本，使用期间的维修和维护难度低，且在储料和射料的切换过程中，阀芯9的上下移动的反应效率高，不会受到其他结构的影响，提高储料和射料工序的切换速度。
阀芯9一侧设置有止挡块10，阀芯9上端设置有止挡球11，所述止挡块10活动插入至出料孔5内；当阀芯9向上移动时，止挡球11顶端插入至流通孔3下端，止挡块10脱离出料孔5。
当阀芯9向上移动时，止挡球11的顶端能够插入至流通孔3的下端，进而将流通孔3封闭，使得流通孔3与安装孔2被隔断，止挡块10脱离出料孔5，进而能够使得出料孔5与进料孔4相通。
止挡球11最大直径大于流通孔3直径，一方面是为了防止止挡球11完全进入至流通孔3内，保证阀芯9上下移动的过程顺利，二是为了保证能够完全隔绝流通孔3和安装孔2。
阀芯9下端设置有斜抵面12，斜抵面12位于进料孔4内，射料时，原料进入至进料孔4内后与斜抵面12相接触，原料向前的挤压力作用在斜抵面12上，进而原料向前的挤压力能够带动阀芯9向上移动，进而能够使得阀芯9下端脱离出料孔5，当阀芯9脱离出料孔5后，出料孔5与进料孔4相通，进而原料能够通过出料孔5进入至射胶筒8内。
阀芯9上设置有环形下压面13，环形下压面13位于安装孔2内，储料 时，原料进入至流通孔3，进而能够挤压阀芯9顶端并带动阀芯9向下移动，阀芯9向下移动至其顶端脱离流通孔3后，原料能够进入至安装孔2内，进而原料能够与环形下压面13相接触，原料向下的挤压力作用在环形下压面13上，进而原料能够继续带动阀芯9向下移动，直至止挡块10完全插入至出料孔5内，设置环形下压面13的好处在于，防止原料对阀芯9顶端的挤压力不够而导致止挡块10无法完全插入至出料孔5内。
阀体1下端插设有安装座14，安装座14上设置有连接柱15，连接柱15贯穿进料孔4以及出料孔5并伸入至安装孔2内，阀芯9活动套设于连接柱15上。
安装座14插设于阀体1下端，阀芯9活动套设于连接柱15上，进而保证阀芯9能够沿规定路线上下移动。
进料孔4直径以及出料孔5直径均大于连接柱15直径，保证阀芯9向上移动至止挡块10脱离出料孔5后，进料孔4和出料孔5能够相通，进料孔4内的原料能够绕过连接柱15进入至出料孔5内。
连接柱15侧面设置有第一止挡面16，阀体1上开设有移动孔18，移动孔18内设置有第二止挡面17，连接柱15活动插设于移动孔18内且第一止挡面16活动抵靠于第二止挡面17，第一止挡面16活动抵靠于第二止挡面17上，这样能够防止阀芯9上下移动的过程中发生旋转。
本文中所描述的具体实施例仅仅是对本发明精神作举例说明。本发明所属技术领域的技术人员可以对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代，但并不会偏离本发明的精神所定义的范围。

Claims (9)

  1. 一种用于注塑机的三通阀结构，其特征在于，包括：
    阀体，其纵向开设有安装孔以及流通孔，所述安装孔与所述流通孔相通，所述阀体下部横向开设有进料孔以及出料孔，所述进料孔与所述安装孔相通；
    阀芯，其纵向活动设置于所述安装孔内，所述阀芯下端活动插设于所述出料孔内并将出料孔和所述进料孔隔断，当向所述进料孔内送料时，原料能够带动所述阀芯向上移动；
    当所述阀芯向上移动时，所述阀芯下端脱离所述出料孔，所述进料孔、所述出料孔相通，所述流通孔与所述安装孔被所述阀芯上端隔断。
  2. 根据权利要求1所述的一种用于注塑机的三通阀结构，其特征在于，所述阀芯一侧设置有止挡块，阀芯上端设置有止挡球，所述止挡块活动插入至所述出料孔内；当所述阀芯向上移动时，所述止挡球顶端插入至所述流通孔下端，所述止挡块脱离所述出料孔。
  3. 根据权利要求1所述的一种用于注塑机的三通阀结构，其特征在于，所述阀芯下端设置有斜抵面，所述斜抵面位于所述进料孔内。
  4. 根据权利要求3所述的一种用于注塑机的三通阀结构，其特征在于，所述阀芯上设置有环形下压面，所述环形下压面位于所述安装孔内。
  5. 根据权利要求2所述的一种用于注塑机的三通阀结构，其特征在于，所述止挡球最大直径大于所述流通孔直径。
  6. 根据权利要求1所述的一种用于注塑机的三通阀结构，其特征在于，所述阀体下端插设有安装座，所述安装座上设置有连接柱，所述连接柱贯穿所述进料孔以及所述出料孔并伸入至所述安装孔内，所述阀芯活动套设于所述连接柱上。
  7. 根据权利要求6所述的一种用于注塑机的三通阀结构，其特征在于， 所述进料孔直径以及所述出料孔直径均大于所述连接柱直径。
  8. 根据权利要求6所述的一种用于注塑机的三通阀结构，其特征在于，所述连接柱侧面设置有第一止挡面，所述阀体上开设有移动孔，所述移动孔内设置有第二止挡面，所述连接柱活动插设于所述移动孔内且所述第一止挡面活动抵靠于所述第二止挡面。
  9. 根据权利要求1所述的一种用于注塑机的三通阀结构，其特征在于，所述阀体上端连接有溶胶筒，所述溶胶筒与所述流通孔相通，阀体下端设置有注胶筒以及射胶筒，所述注胶筒与所述进料孔相通，所述射胶筒与所述出料孔相通；
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