WO2021077925A1 - 注塑方法及其装置 - Google Patents

注塑方法及其装置 Download PDF

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Publication number
WO2021077925A1
WO2021077925A1 PCT/CN2020/114123 CN2020114123W WO2021077925A1 WO 2021077925 A1 WO2021077925 A1 WO 2021077925A1 CN 2020114123 W CN2020114123 W CN 2020114123W WO 2021077925 A1 WO2021077925 A1 WO 2021077925A1
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Prior art keywords
glue
injection
inlet
sequence
glue inlet
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PCT/CN2020/114123
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English (en)
French (fr)
Inventor
褚永兴
杨春行
梁卫海
史宇辉
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青岛海尔电冰箱有限公司
海尔智家股份有限公司
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Publication of WO2021077925A1 publication Critical patent/WO2021077925A1/zh

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    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C45/2708—Gates
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • 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
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • 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
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C45/2708—Gates
    • B29C2045/2709—Gates with a plurality of mould cavity inlets in close proximity

Definitions

  • the invention relates to the technical field of injection molding, in particular to an injection molding method and a device thereof.
  • Injection molding machines are usually used to produce rubber products (such as plastic products or rubber products).
  • the injection molding machine is usually equipped with a hot runner device and a mold.
  • the hot runner device is equipped with a hot nozzle
  • the mold is equipped with a cavity and a hot nozzle.
  • the hot nozzle injects molten rubber into the mold cavity.
  • the molten rubber flows in the mold cavity.
  • the molten rubber will exert pressure on the inner surface of the mold cavity, that is, the cavity pressure, in order to ensure the injection molding.
  • the quality of the mold cavity and the cavity pressure changes in different areas of the cavity inner surface all need to meet the preset conditions.
  • Figure 1 shows a curve of the pressure of the mold cavity. Injection molding starts at the time corresponding to point A. At this time, the hot nozzle starts to inject the molten rubber into the mold cavity, and the molten rubber arrives there at the time corresponding to point B. In the area, the cavity pressure begins to rise, and the molten rubber fills the cavity at the time corresponding to point C. The stage from point A to point C is called the filling stage; after that, the hot nozzle continues to inject the molten rubber into the cavity and Apply pressure so that the cavity pressure reaches the pressure value corresponding to point D.
  • the stage from point C to point D is called the extrusion stage; after that, as the molten rubber gradually cools down, the cavity pressure gradually decreases to zero, D
  • This stage from point F to point F is called the holding pressure stage.
  • the molten rubber will harden into injection molded parts.
  • point A and point B are coincident, otherwise they do not coincide; further, if the positions of the first area and the second area are not the same, the corresponding modes of the two areas
  • the change curve of the cavity pressure is also different. Therefore, how to make the change of the cavity pressure in different regions meet the preset conditions during the injection molding process has become an urgent problem to be solved.
  • the purpose of the present invention is to provide an injection molding method and device.
  • an embodiment of the present invention provides an injection molding method, which includes the following steps: receiving an instruction to start injection; selecting the first injection port from a plurality of injection ports, and generating a sequence of injection molding.
  • the first glue inlet is located at the front position, and the closer the distance from the first glue inlet to the first glue inlet, the higher the position; based on the glue injection sequence, the glue is injected to the glue inlet in turn .
  • the "selecting the first glue inlet from a plurality of glue inlets” specifically includes: selecting the first glue inlet from the plurality of glue inlets arranged in a row, and the first glue inlet is located at The middle position of the column.
  • the "injecting glue to the glue inlet in sequence based on the glue injection sequence” specifically includes: continuously selecting the most advanced position from the glue injection sequence and without glue injection The destination glue inlet of, start to inject glue to the destination glue inlet and generate a first interval time, wait for the first interval time, until the glue inlets in the glue injection sequence queue are all glued, where, when the destination When the glue inlet is at the last position in the glue injection sequence, the first interval time is zero.
  • the method further includes the following steps: based on the glue injection sequence queue, sequentially stopping the glue injection to the glue inlet.
  • the “stop injecting glue to the glue inlet in sequence based on the glue injection sequence” specifically includes: continuously selecting the position that is the most advanced from the glue injection sequence without stopping.
  • An embodiment of the present invention also provides an injection molding device, including: a mold in which a strip-shaped cavity is provided, and the mold is provided with N injection moldings arranged along the length direction of the cavity.
  • the N glue inlets are all connected to the mold cavity, and N is a natural number;
  • the instruction receiving module is used to receive the instruction to start injection molding;
  • the injection sequence generation module is used to select the first injection mold from the N glue inlets.
  • a glue inlet, and a glue injection sequence is generated.
  • the first glue inlet is located at the foremost position, and the position of the glue inlet closer to the first glue inlet is The farther ahead; the glue injection module is started, which is used to control the N glue inlets to inject glue into the cavity in turn based on the glue injection sequence.
  • the injection molding sequence generation module is further used to: select a first glue inlet from the N glue inlets arranged in a row, and the first glue inlet is located at the The middle position of the column.
  • the start glue injection module is also used to: continue to select from the glue injection sequence queue the most advanced and uninjected glue inlet, and start to send the glue to the goal. Inject glue at the glue inlet and generate the first interval time, and wait for the first interval time until the glue inlets in the glue injection sequence queue are all injected, wherein when the target glue inlet is located in the glue injection sequence queue When the last digit of, the first interval time is zero.
  • a glue injection stop module configured to sequentially stop glue injection to the glue inlet based on the glue injection sequence queue.
  • the stop glue injection module is also used to: continuously select from the glue injection sequence queue the destination glue inlet that is the most advanced and has not stopped the glue injection, and stop the glue injection
  • the target glue inlet injects glue and generates a second interval time, and waits for the second interval time until all glue inlets in the glue injection sequence stop injecting glue, wherein when the target glue inlet is located in the glue injection sequence queue When the last bit in the second interval time is zero.
  • the embodiments of the present invention provide an injection molding method and device.
  • the injection molding method selects the first glue inlet from a plurality of glue inlets, and the others are closer to the first glue inlet The sooner the injection port is injected; the injection molding method can better make the cavity pressure changes in different areas meet the preset conditions, so as to achieve the internal pressure balance of the injection molded part and reduce the deformation caused by the internal stress problem of the injection molded part. Can greatly improve the quality of injection molded parts.
  • Figure 1 is a graph showing the variation of cavity pressure in the present invention
  • FIG. 2 is a schematic flow chart of the injection molding method in an embodiment of the present invention.
  • Figure 3 is a schematic flow diagram of the injection molding method in an embodiment of the present invention.
  • Fig. 4 is a schematic structural diagram of an injection molding machine in an embodiment of the present invention.
  • first, second, etc. may be used herein to describe various elements or structures, these described objects should not be limited by these terms. These terms are only used to distinguish these description objects from each other.
  • first hot nozzle may be referred to as the second hot nozzle, and similarly, the second hot nozzle may also be referred to as the first hot nozzle, which does not deviate from the protection scope of the present application.
  • the first embodiment of the present invention provides an injection molding method.
  • a control device may be provided in the injection molding machine, and the injection molding method may be executed by the control device.
  • the control device may be a hardware device, a software device, or a combination of software and hardware.
  • the mold of the injection molding machine is provided with a mold cavity and several glue inlets communicating with the mold cavity, so that the molten rubber can be injected into the mold cavity through the glue inlet. As shown in Figure 2, it includes the following steps:
  • Step 201 Receive an injection start instruction; here, a control switch can be set on the injection molding machine, when the user turns on the control switch, the control device will receive an injection start instruction, and the injection molding machine will start injection molding .
  • Step 202 Select the first glue inlet from several glue inlets, and generate a glue injection sequence queue.
  • the first glue inlet is located at the foremost position and is closer to the first glue inlet The position of the glue inlet is more forward; here, in practice, you can choose which glue inlet is the first glue inlet according to your needs, for example: select the glue inlet in the middle position from several glue inlets as the first glue inlet The glue inlet, that is, there will be some other glue inlets around the first glue inlet.
  • Step 203 Inject glue to the glue inlet sequentially based on the glue injection sequence queue.
  • the N glue inlets are arranged in a sequence from front to back, such as: the first glue inlet, The second glue inlet,..., the Nth glue inlet.
  • the N glue inlets When injecting molten rubber into the mold cavity, first inject the molten rubber into the first glue inlet.
  • the molten rubber flows from the first glue inlet to the surroundings.
  • the mold near the first glue inlet The cavity pressure gradually increases (for example, gradually changing from point B to point C), while the cavity pressure in the area close to the second glue inlet is still zero (for example, gradually changing from point A to point B); understandable
  • the molten rubber will first flow to the second glue inlet.
  • the molten rubber can be injected into the second glue inlet (here, the molten rubber injected from the first glue inlet flows to the second glue inlet.
  • the glue port the molten rubber is injected into the second glue inlet, which can effectively reduce the probability of the formation of weld marks), so the cavity pressure in the area close to the second glue inlet gradually increases (for example , Gradually changing from point B to point C), ... until the molten rubber is injected into the Nth glue inlet.
  • the area near the first glue inlet will go from point B to point C in advance, while the area near the second glue inlet will be later.
  • the injection molding method in the embodiment of the present invention can better make the cavity pressure in different areas The changes meet the preset conditions, which can realize the internal pressure balance of the injection molded parts, reduce the deformation caused by the internal stress of the injection molded parts, and greatly improve the quality of the injection molded parts.
  • the "selecting the first glue inlet from a plurality of glue inlets” specifically includes: selecting the first glue inlet from the plurality of glue inlets arranged in a row, and the first glue inlet The mouth is located in the middle of the column.
  • the N glue inlets can be numbered in the order from one end to the other, that is, the numbers are 1, 2, ..., N ,
  • the first glue inlet is numbered N/2 or N/2+1;
  • the "injecting glue to the glue inlet in sequence based on the glue injection sequence” specifically includes: continuously selecting the most advanced position from the glue injection sequence queue and not The target glue inlet of glue injection starts to inject glue to the target glue inlet and generates a first interval time, and waits for the first interval time until the glue inlets in the glue injection sequence queue are all filled with glue, wherein, When the target glue inlet is at the last position in the glue injection sequence, the first interval time is zero.
  • the first interval time can be zero.
  • the following step is further included: based on the glue injection sequence queue, sequentially stopping the glue injection to the glue inlet.
  • the glue inlet where the glue is injected is the first to stop the glue.
  • the “stop injecting glue to the glue inlet in sequence based on the glue injection sequence” specifically includes: continuously selecting the most advanced position from the glue injection sequence queue. For the destination glue inlet where the glue injection is not stopped, stop the glue injection to the destination glue inlet and generate a second interval time, wait for the second interval time, until the glue inlets in the glue injection sequence queue all stop glue injection, Wherein, when the target glue inlet is located at the last position in the glue injection sequence, the second interval time is zero.
  • the second embodiment of the present invention provides an injection molding device, as shown in FIG. 4, including:
  • the mold 2 is provided with an elongated mold cavity, the mold is provided with N glue inlets arranged along the length direction of the mold cavity, and the N glue inlets are all connected to the mold
  • the cavities are connected, and N is a natural number; here, the cavity is elongated, and the N glue inlets are arranged along the length direction, that is, the N glue inlets are arranged in a row; in Figure 4
  • the injection molding machine includes two molds 2, namely a first mold 21 and a second mold 22.
  • the first and second molds are each provided with a strip-shaped cavity, and each is provided with four mold cavities Connected plastic inlet.
  • the instruction receiving module is used to receive the instruction to start injection; here, a control switch can be set on the injection molding machine. When the user turns on the control switch, the control device will receive a start injection instruction, so the injection molding machine Injection molding will begin.
  • the injection sequence generation module is used to select the first glue inlet from N glue inlets and generate a glue injection sequence queue.
  • the first glue inlet is located at the foremost position and is the same as the first glue inlet. The closer the glue inlet is, the closer the position is; here, in practice, you can choose which glue inlet to be the first glue inlet according to your needs, for example: select the middle position from several glue inlets
  • the glue port serves as the first glue inlet, that is, there are some other glue inlets around the first glue inlet.
  • the glue injection module is used to control the N glue inlets to inject glue into the cavity based on the glue injection sequence.
  • the N glue inlets are arranged in a sequence from front to back, such as: the first glue inlet, The second glue inlet,..., the Nth glue inlet.
  • the mold near the first glue inlet The cavity pressure gradually increases (for example, gradually changing from point B to point C), while the cavity pressure in the area close to the second glue inlet is still zero (for example, gradually changing from point A to point B); understandable
  • the molten rubber will first flow to the second glue inlet.
  • the molten rubber can be injected into the second glue inlet (here, the molten rubber injected from the first glue inlet flows to the second glue inlet.
  • the glue port the molten rubber is injected into the second glue inlet, which can effectively reduce the probability of the formation of weld marks), so the cavity pressure in the area close to the second glue inlet gradually increases (for example , Gradually changing from point B to point C), ...
  • the area near the first glue inlet will go from point B to point C in advance, while the area near the second glue inlet will be later.
  • the injection molding method in the embodiment of the present invention can better make the cavity pressure in different areas The changes meet the preset conditions, which can realize the internal pressure balance of the injection molded parts, reduce the deformation caused by the internal stress of the injection molded parts, and greatly improve the quality of the injection molded parts.
  • the injection molding sequence generation module is also used to: select the first glue inlet from N glue inlets, the first glue inlet is located in the middle position; here, the N glue inlets are arranged in a row ,
  • the N glue inlets can be numbered in the order from one end to the other, that is, the numbers are 1, 2,..., N respectively.
  • N is an even number
  • the first glue inlet is numbered N/2 Or N/2+1 glue inlet
  • N is an odd number
  • the first glue inlet is numbered INT(N/2)+1, where INT(x) is a rounding function, that is, no more than a real number
  • the start glue injection module is also used to: continue to select the most advanced target glue inlet without glue injection from the glue injection sequence queue, and start to inject the glue into the target glue inlet Glue and generate the first interval time, and wait for the first interval time until the glue inlets in the glue injection sequence queue are all filled with glue, where the target glue inlet is located at the last place in the glue injection sequence queue When, the first interval time is zero.
  • the first interval time can be zero.
  • a glue injection stop module configured to sequentially stop glue injection to the glue inlet based on the glue injection sequence queue.
  • the glue inlet where the glue is injected is the first to stop the glue.
  • the glue injection stop module is also used to: continuously select the target glue inlet that is the most advanced and has not stopped the glue injection from the glue injection sequence queue, and stop to the target glue inlet Inject glue and generate a second interval time, wait for the second interval time, until all the glue inlets in the glue injection sequence stop injecting glue, wherein when the target glue inlet is located at the last in the glue injection sequence queue When bit, the second interval time is zero.
  • FIG. 4 shows a schematic structural view of an injection molding machine.
  • the injection molding machine includes a hot runner device 1 provided with N hot nozzles 11, wherein each hot nozzle 11 has a rubber outlet Connect with the only glue inlet.
  • the glue outlet of the hot nozzle 11 is connected with the glue inlet, so that the molten rubber from the glue outlet can flow into the mold cavity;
  • the hot runner device 1 is provided with four hot nozzles 11 , Specifically the first hot nozzle 111, the second hot nozzle 112, the third hot nozzle 113 and the fourth hot nozzle 114, each hot nozzle 11 is provided with two glue outlets, of which one glue outlet is connected to the first The mold 21 and the other glue outlet are connected to the second mold 22.
  • a valve device may be provided in the hot nozzle 11, so that at the same time, the hot nozzle 11 only injects the molten rubber into the first mold 21, or only injects the molten rubber into the second mold 22, or simultaneously The first and second molds inject molten rubber.
  • the four sensors are installed on the first and second molds.
  • the four sensors are also arranged along the length of the mold cavity, that is, arranged in a row, in order from one end to the other.
  • the first and fourth sensors are temperature and pressure sensors, both of which can simultaneously detect the cavity pressure in the cavity and the temperature of the rubber compound.
  • the diameter of the second and third sensors is 4mm, and the pressure measurement range is 0-2000Bar; the diameter of the first and fourth sensors is 4mm, the pressure measurement range is 0-2000Bar, and the temperature measurement range is 0-450°C ,
  • the wrapping layer can be a wear-resistant and high-temperature insulated wire skin, and the outer surface is provided with a wear-resistant coating.
  • four sensors are provided on the first and second molds, so that during the injection molding process, the pressure change in the cavity can be obtained in real time, so that the user can better grasp the injection molding situation. It is convenient for users to better adjust the parameters of the injection molding machine.
  • N 4.

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Abstract

一种注塑方法及其装置，注塑方法包括：接收开始注塑指令；从若干入胶口中选择第一入胶口，并生成注胶顺序队列；基于注胶顺序队列，依次向入胶口注胶；该注塑方法能实现注塑件的内部压力平衡，减少内应力问题造成的变形。

Description

注塑方法及其装置 技术领域
本发明涉及注塑技术领域，尤其涉及一种注塑方法及其装置。
背景技术
注塑机通常用于生产胶制品(比如，塑料制品或橡胶制品)等，注塑机通常设置有热流道装置和模具，在热流道装置中设置有热咀，在模具中设置有模腔，热咀能够向模腔中注射熔融胶料。在接收到开始注塑指令时，热咀向模腔中注射熔融胶料，熔融胶料在模腔内流动，熔融胶料就会对模腔内表面施加压力，即模腔压力，为了确保注塑件的质量，模腔内表面的不同区域的模腔压力的变化都需要符合预设条件。
图1示出了模腔压力的一种变化曲线，在A点对应的时间开始注塑，此时，热咀开始将熔融胶料注射进模腔中，熔融胶料于B点对应的时间抵达该区域，模腔压力开始上升，熔融胶料于C点所对应的时间填满模腔，A点至C点的这个阶段称为填充阶段；之后，热咀继续向模腔中注射熔融胶料并施加压力，从而使得模腔压力到达D点对应的压力值，C点至D点的这个阶段称为挤压阶段；之后，随着熔融胶料的逐渐冷却，模腔压力逐渐降低为零，D点至F点的这个阶段称为保压阶段，在这个阶段，熔融胶料会硬化为注塑件。这里，如果该区域与热咀处于相同位置，则A点与B点重合，否则不重合；更进一步，如果第一区域与第二区域所处的位置不相同，则这两个区域对应的模腔压力的变化曲线也不一样，因此，在注塑过程中，如何使得不同区域的模腔压力的变化都符合预设条件，就成为一个亟待解决的问题。
发明内容
本发明的目的在于提供一种注塑方法及其装置。
为了实现上述发明目的之一，本发明一实施方式提供一种注塑方法，包括以下步骤：接收开始注塑指令；从若干入胶口中选择第一入胶口，并生成注胶顺序队列，在所述注胶顺序队列中，第一入胶口位于最前位置，且与第一入胶口距离越近的入胶口，位置越靠前；基于所述注胶顺序队列，依次向入胶口注胶。
作为本发明一实施方式的进一步改进，所述“从若干入胶口中选择第一入胶口”具体包括：从排成一列的若干入胶口中选择第一入胶口，第一入胶口位于所述列的中间位置。
作为本发明一实施方式的进一步改进，所述“基于所述注胶顺序队列，依次向入胶口注胶”具体包括：持续从所述注胶顺序队列中选择位置最靠前且未注胶的目的入胶口，开始向所述目的入胶口注胶并生成第一间隔时间，等待第一间隔时间，直至所述注胶顺序队列中的入胶口均被注 胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第一间隔时间为零。
作为本发明一实施方式的进一步改进，还包括以下步骤：基于所述注胶顺序队列，依次停止向入胶口注胶。
作为本发明一实施方式的进一步改进，所述“基于所述注胶顺序队列，依次停止向入胶口注胶”具体包括：持续从所述注胶顺序队列中选择位置最靠前且未停止注胶的目的入胶口，停止向所述目的入胶口注胶并生成第二间隔时间，等待第二间隔时间，直至所述注胶顺序队列中的入胶口均停止注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第二间隔时间为零。
本发明实施例还提供了一种注塑装置，包括：模具，所述模具中设置有呈长条状的模腔，所述模具设置有沿着所述模腔的长度方向排列的N个入胶口，所述N个入胶口均与所述模腔相连通，N为自然数；指令接收模块，用于接收开始注塑指令；注塑顺序生成模块，用于从所述N个入胶口中选择第一入胶口，并生成注胶顺序队列，在所述注胶顺序队列中，所述第一入胶口位于最前位置，且与所述第一入胶口距离越近的入胶口，位置越靠前；开始注胶模块，用于基于所述注胶顺序队列，依次控制所述N个入胶口向所述模腔注胶。
作为本发明一实施方式的进一步改进，所述注塑顺序生成模块，还用于：从排成一列的所述N个入胶口中选择第一入胶口，所述第一入胶口位于所述列的中间位置。
作为本发明一实施方式的进一步改进，所述开始注胶模块，还用于：持续从所述注胶顺序队列中选择位置最靠前且未注胶的目的入胶口，开始向所述目的入胶口注胶并生成第一间隔时间，等待第一间隔时间，直至所述注胶顺序队列中的入胶口均被注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第一间隔时间为零。
作为本发明一实施方式的进一步改进，还包括：停止注胶模块，用于基于所述注胶顺序队列，依次停止向入胶口注胶。
作为本发明一实施方式的进一步改进，所述停止注胶模块，还用于：持续从所述注胶顺序队列中选择位置最靠前且未停止注胶的目的入胶口，停止向所述目的入胶口注胶并生成第二间隔时间，等待第二间隔时间，直至所述注胶顺序队列中的入胶口均停止注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第二间隔时间为零。
相对于现有技术，本发明的技术效果在于：本发明实施例提供一种注塑方法及其装置，该注塑方法从若干入胶口中选择第一入胶口，且其他越靠近第一入胶口的入胶口越早注胶；该注塑方法能够更好使得不同区域的模腔压力的变化都符合预设条件，从而能够实现注塑件的内部压力平衡，减少注塑件内应力问题造成的变形，可以极大的提高注塑件的质量。
附图说明
图1是本发明中的模腔压力的变化曲线图；
图2是本发明实施例中的注塑方法的流程示意图；
图3是本发明实施例中的注塑方法的流程示意图；
图4是本发明实施例中的注塑机的结构示意图。
具体实施方式
以下将结合附图所示的各实施方式对本发明进行详细描述。但这些实施方式并不限制本发明，本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在本发明的保护范围内。
本文使用的例如“上”、“上方”、“下”、“下方”等表示空间相对位置的术语是出于便于说明的目的来描述如附图中所示的一个单元或特征相对于另一个单元或特征的关系。空间相对位置的术语可以旨在包括设备在使用或工作中除了图中所示方位以外的不同方位。例如，如果将图中的设备翻转，则被描述为位于其他单元或特征“下方”或“之下”的单元将位于其他单元或特征“上方”。因此，示例性术语“下方”可以囊括上方和下方这两种方位。设备可以以其他方式被定向(旋转90度或其他朝向)，并相应地解释本文使用的与空间相关的描述语。
并且，应当理解的是尽管术语第一、第二等在本文中可以被用于描述各种元件或结构，但是这些被描述对象不应受到这些术语的限制。这些术语仅用于将这些描述对象彼此区分开。例如，第一热咀可以被称为第二热咀，并且类似地第二热咀也可以被称为第一热咀，这并不背离本申请的保护范围。
本发明实施例一提供了一种注塑方法，这里，可以在注塑机中设置有一个控制装置，由该控制装置来执行该注塑方法，该控制装置可以为硬件装置、软件装置或软硬结合的装置；在注塑机的模具中设置有模腔以及与模腔相连通的若干入胶口，从而可以通过入胶口向模腔中注入熔融胶料。如图2所示，包括以下步骤：
步骤201：接收开始注塑指令；这里，在该注塑机上可以设置有一个控制开关，当用户打开该控制开关时，该控制装置就会接收到一个开始注塑指令，于是该注塑机就会开始注塑。
步骤202：从若干入胶口中选择第一入胶口，并生成注胶顺序队列，在所述注胶顺序队列中，第一入胶口位于最前位置，且与第一入胶口距离越近的入胶口，位置越靠前；这里，在实际中，可以根据需要来选择哪个入胶口作为第一入胶口，例如：从若干入胶口中选择处于中间位置的入胶口作为第一入胶口，即第一入胶口的周围会有一些其他的入胶口。
步骤203：基于所述注胶顺序队列，依次向入胶口注胶。
这里，为了便于说明，假设该入胶口的数量为N个，在该注胶顺序队列中，该N个入胶口按 照从前至后的顺序排成一个队列，比如：第一入胶口、第二入胶口、…、第N入胶口。在向模腔中注射熔融胶料时，首先向第一入胶口注射熔融胶料，该熔融胶料从第一入胶口向四周流动，此时，靠近第一入胶口的区域的模腔压力开始逐渐增大(例如，从B点逐渐变化成C点)，而靠近第二入胶口的区域的模腔压力仍然为零(例如，从A点逐渐变化成B点)；可以理解的是，该熔融胶料会首先流动到第二入胶口，此时，可以向第二入胶口注入熔融胶料(这里，第一入胶口所注入的熔融胶料流动到第二入胶口时，才开始向第二入胶口注入熔融胶料，可以有效的较低熔接痕的形成的概率)，于是，靠近第二入胶口的区域的模腔压力开始逐渐变大(例如，从B点逐渐变化成C点)，…，直至向第N入胶口注入熔融胶料。这里，可以理解的是，向第i入胶口注射的熔融胶体对第i入胶口附近的区域的模腔压力会产生很大的影响，i＝1，2，…，N，例如，第一入胶口附近的区域会提前从B点至C点这个阶段，而第二入胶口附近的区域则会晚一些，本发明实施例中的注塑方法能够更好使得不同区域的模腔压力的变化都符合预设条件，从而能够实现注塑件的内部压力平衡，减少注塑件内应力问题所造成的变形，可以极大的提高注塑件的质量。
本发明实施例中，如图3所示，所述“从若干入胶口中选择第一入胶口”具体包括：从排成一列的若干入胶口中选择第一入胶口，第一入胶口位于所述列的中间位置。这里，假设有N个入胶口，该N个入胶口排成一列，则可以按照一端到另一端的顺序给该N个入胶口编号，即编号分别为，1、2、…、N，则当N为偶数时，第一入胶口为编号为N/2或N/2+1的入胶口；当N为奇数时，第一入胶口为编号为INT(N/2)+1，其中，INT(x)为取整函数，即指不超过实数x的最大整数称为x的整数部分，例如，INT(4.1)＝4。
本发明实施例中，如图3所示，所述“基于所述注胶顺序队列，依次向入胶口注胶”具体包括：持续从所述注胶顺序队列中选择位置最靠前且未注胶的目的入胶口，开始向所述目的入胶口注胶并生成第一间隔时间，等待第一间隔时间，直至所述注胶顺序队列中的入胶口均被注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第一间隔时间为零。这里，当目的入胶口为第i(i＝1、2、…、N-1)入胶口时，在开始向第i入胶口注胶之后，等待第一间隔时间之后，才会开始向第i+1入胶口注胶；当i＝N时，就不需要再等待了，即第一间隔时间可以为零了。
本发明实施例中，如图3所示，还包括以下步骤：基于所述注胶顺序队列，依次停止向入胶口注胶。这里，最先开始注胶的入胶口，也最先停止注胶。
本发明实施例中，如图3所示，所述“基于所述注胶顺序队列，依次停止向入胶口注胶”具体包括：持续从所述注胶顺序队列中选择位置最靠前且未停止注胶的目的入胶口，停止向所述目的入胶口注胶并生成第二间隔时间，等待第二间隔时间，直至所述注胶顺序队列中的入胶口均停 止注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第二间隔时间为零。这里，当目的入胶口为第i(i＝1、2、…、N-1)入胶口时，在停止向第i入胶口注胶之后，等待第一间隔时间之后，才会停止向第i+1入胶口注胶；当i＝N时，就不需要在等待了，即第二间隔时间可以为零了。
本发明实施例二提供了一种注塑装置，如图4所示，包括：
模具2，所述模具2中设置有呈长条状的模腔，所述模具设置有沿着所述模腔的长度方向排列的N个入胶口，所述N个入胶口均与模腔相连通，N为自然数；这里，该模腔是呈长条状的，并且N个入胶口是沿着长度方向排列的，即，该N个入胶口排成一列；在图4中，注塑机包含有两个模具2，即第一模具21和第二模具22，第一、第二模具中均设置有一个呈长条状的模腔，且均设置有四个能够与模腔相连通的入胶口。
指令接收模块，用于接收开始注塑指令；这里，在该注塑机上可以设置有一个控制开关，当用户打开该控制开关时，该控制装置就会接收到一个开始注塑指令，于是该注塑机就会开始注塑。
注塑顺序生成模块，用于从N个入胶口中选择第一入胶口，并生成注胶顺序队列，在所述注胶顺序队列中，第一入胶口位于最前位置，且与第一入胶口距离越近的入胶口，位置越靠前；这里，在实际中，可以根据需要来选择哪个入胶口作为第一入胶口，例如：从若干入胶口中选择处于中间位置的入胶口作为第一入胶口，即第一入胶口的周围会有一些其他的入胶口。
开始注胶模块，用于基于所述注胶顺序队列，依次控制N个入胶口向所述模腔注胶。这里，为了便于说明，假设该入胶口的数量为N个，在该注胶顺序队列中，该N个入胶口按照从前至后的顺序排成一个队列，比如：第一入胶口、第二入胶口、…、第N入胶口。在向模腔中注射熔融胶料时，首先向第一入胶口注射熔融胶料，该熔融胶料从第一入胶口向四周流动，此时，靠近第一入胶口的区域的模腔压力开始逐渐增大(例如，从B点逐渐变化成C点)，而靠近第二入胶口的区域的模腔压力仍然为零(例如，从A点逐渐变化成B点)；可以理解的是，该熔融胶料会首先流动到第二入胶口，此时，可以向第二入胶口注入熔融胶料(这里，第一入胶口所注入的熔融胶料流动到第二入胶口时，才开始向第二入胶口注入熔融胶料，可以有效的较低熔接痕的形成的概率)，于是，靠近第二入胶口的区域的模腔压力开始逐渐变大(例如，从B点逐渐变化成C点)，…，直至向第N入胶口注入熔融胶料。这里，可以理解的是，向第i入胶口注射的熔融胶体对第i入胶口附近的区域的模腔压力会产生很大的影响，i＝1，2，…，N，例如，第一入胶口附近的区域会提前从B点至C点这个阶段，而第二入胶口附近的区域则会晚一些，本发明实施例中的注塑方法能够更好使得不同区域的模腔压力的变化都符合预设条件，从而能够实现注塑件的内部压力平衡，减少注塑件内应力问题所造成的变形，可以极大的提高注塑件的质量。
本发明实施例中，所述注塑顺序生成模块，还用于：从N个入胶口中选择第一入胶口，第一入胶口位于中间位置；这里，该N个入胶口排成一列，则可以按照一端到另一端的顺序给该N个入胶口编号，即编号分别为，1、2、…、N，则当N为偶数时，第一入胶口为编号为N/2或N/2+1的入胶口；当N为奇数时，第一入胶口为编号为INT(N/2)+1，其中，INT(x)为取整函数，即指不超过实数x的最大整数称为x的整数部分，例如，INT(4.1)＝4。
本发明实施例中，所述开始注胶模块，还用于：持续从所述注胶顺序队列中选择位置最靠前且未注胶的目的入胶口，开始向所述目的入胶口注胶并生成第一间隔时间，等待第一间隔时间，直至所述注胶顺序队列中的入胶口均被注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第一间隔时间为零。这里，当目的入胶口为第i(i＝1、2、…、N-1)入胶口时，在开始向第i入胶口注胶之后，等待第一间隔时间之后，才会开始向第i+1入胶口注胶；当i＝N时，就需要在等待了，即第一间隔时间可以为零了。
本发明实施例中，还包括：停止注胶模块，用于基于所述注胶顺序队列，依次停止向入胶口注胶。这里，最先开始注胶的入胶口，也最先停止注胶。
本发明实施例中，所述停止注胶模块，还用于：持续从所述注胶顺序队列中选择位置最靠前且未停止注胶的目的入胶口，停止向所述目的入胶口注胶并生成第二间隔时间，等待第二间隔时间，直至所述注胶顺序队列中的入胶口均停止注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第二间隔时间为零。这里，当目的入胶口为第i(i＝1、2、…、N-1)入胶口时，在停止向第i入胶口注胶之后，等待第一间隔时间之后，才会停止向第i+1入胶口注胶；当i＝N时，就不需要在等待了，即第二间隔时间可以为零了。
这里，图4示出了一种注塑机的结构示意图，该注塑机包括热流道装置1，所述热流道装置1设置有N个热咀11，其中，每个热咀11的出胶口均与唯一的入胶口相连通。这里，热咀11的出胶口与入胶口连通，从而出胶口所流出的熔融胶料就能够流进模腔中；在图4中，该热流道装置1设置有四个热咀11，具体为第一热咀111、第二热咀112、第三热咀113和第四热咀114，每个热咀11都设置有两个出胶口，其中，一个出胶口连通第一模具21，另一个出胶口连通第二模具22。可选的，热咀11中可以设置有一个阀装置，从而使得在同一时刻，热咀11仅向第一模具21注射熔融胶料，或者仅向第二模具22注射熔融胶料，或者同时向第一、第二模具注射熔融胶料。
如图4所示，在第一、第二模具上均安装有四个传感器，该四个传感器也沿着模腔的长度方向排列，即排成一列，按照从一端到另一端的顺序依次为：第一传感器23、第二传感器24、第三传感器25和第四传感器26，其中，第二、第三传感器为压力传感器，均能够探测模腔中的胶 料对模腔内表面的压力(即模腔压力)；第一、第四传感器为温压传感器，均能够同时探测模腔中的模腔压力和胶料的温度。可选的，第二、第三传感器的直径为4mm，压力测量范围为0-2000Bar；第一、第四传感器的直径为4mm，压力测量范围为0-2000Bar，温度测量范围为0-450℃，包裹层可以采用耐磨耐高温的绝缘线皮，且外表面设置有耐磨涂层。这里，在第一、第二模具上均设置有四个传感器，从而在注塑的过程中，能够实时的获取模腔中的模腔压力的变化情况，从而便于用户更好的掌握注塑的情况，便于用户更好对该注塑机的参数进行调整。
可选的，N＝4。
应当理解，虽然本说明书按照实施方式加以描述，但并非每个实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施方式中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施方式的具体说明，它们并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施方式或变更均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种注塑方法，其特征在于，包括以下步骤：
    接收开始注塑指令；
    从若干入胶口中选择第一入胶口，并生成注胶顺序队列，在所述注胶顺序队列中，第一入胶口位于最前位置，且与第一入胶口距离越近的入胶口，位置越靠前；
    基于所述注胶顺序队列，依次向入胶口注胶。
  2. 根据权利要求1所述的注塑方法，其特征在于，所述“从若干入胶口中选择第一入胶口”具体包括：
    从排成一列的若干入胶口中选择第一入胶口，第一入胶口位于所述列的中间位置。
  3. 根据权利要求1所述的注塑方法，其特征在于，所述“基于所述注胶顺序队列，依次向入胶口注胶”具体包括：
    持续从所述注胶顺序队列中选择位置最靠前且未注胶的目的入胶口，开始向所述目的入胶口注胶并生成第一间隔时间，等待第一间隔时间，直至所述注胶顺序队列中的入胶口均被注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第一间隔时间为零。
  4. 根据权利要求1所述的注塑方法，其特征在于，还包括以下步骤：
    基于所述注胶顺序队列，依次停止向入胶口注胶。
  5. 根据权利要求4所述的注塑方法，其特征在于，所述“基于所述注胶顺序队列，依次停止向入胶口注胶”具体包括：
    持续从所述注胶顺序队列中选择位置最靠前且未停止注胶的目的入胶口，停止向所述目的入胶口注胶并生成第二间隔时间，等待第二间隔时间，直至所述注胶顺序队列中的入胶口均停止注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第二间隔时间为零。
  6. 一种注塑装置，其特征在于，包括：
    模具，所述模具中设置有呈长条状的模腔，所述模具设置有沿着所述模腔的长度方向排列的N个入胶口，所述N个入胶口均与所述模腔相连通，N为自然数；
    指令接收模块，用于接收开始注塑指令；
    注塑顺序生成模块，用于从所述N个入胶口中选择第一入胶口，并生成注胶顺序队列，在所述注胶顺序队列中，所述第一入胶口位于最前位置，且与所述第一入胶口距离越近的入胶口，位置越靠前；
    开始注胶模块，用于基于所述注胶顺序队列，依次控制所述N个入胶口向所述模腔注胶。
  7. 根据权利要求6所述的注塑装置，其特征在于，所述注塑顺序生成模块，还用于：
    从排成一列的所述N个入胶口中选择第一入胶口，所述第一入胶口位于所述列的中间位置。
  8. 根据权利要求6所述的注塑装置，其特征在于，所述开始注胶模块，还用于：
    持续从所述注胶顺序队列中选择位置最靠前且未注胶的目的入胶口，开始向所述目的入胶口注胶并生成第一间隔时间，等待第一间隔时间，直至所述注胶顺序队列中的入胶口均被注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第一间隔时间为零。
  9. 根据权利要求6所述的注塑装置，其特征在于，还包括：
    停止注胶模块，用于基于所述注胶顺序队列，依次停止向入胶口注胶。
  10. 根据权利要求9所述的注塑装置，其特征在于，所述停止注胶模块，还用于：
    持续从所述注胶顺序队列中选择位置最靠前且未停止注胶的目的入胶口，停止向所述目的入胶口注胶并生成第二间隔时间，等待第二间隔时间，直至所述注胶顺序队列中的入胶口均停止注胶，其中，当目的入胶口位于所述注胶顺序队列中的最后一位时，第二间隔时间为零。
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