WO2022116219A1 - 一种物料流动性好的挤出装置 - Google Patents

一种物料流动性好的挤出装置 Download PDF

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WO2022116219A1
WO2022116219A1 PCT/CN2020/134138 CN2020134138W WO2022116219A1 WO 2022116219 A1 WO2022116219 A1 WO 2022116219A1 CN 2020134138 W CN2020134138 W CN 2020134138W WO 2022116219 A1 WO2022116219 A1 WO 2022116219A1
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heat
extrusion
pipe
conducting
heating
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PCT/CN2020/134138
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English (en)
French (fr)
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李恭辉
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南京溧水高新创业投资管理有限公司
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Priority to PCT/CN2020/134138 priority Critical patent/WO2022116219A1/zh
Publication of WO2022116219A1 publication Critical patent/WO2022116219A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
    • B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
    • B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
    • B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
    • B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling

Definitions

  • the invention belongs to the technical field of extrusion molding, and particularly relates to an extrusion device with good material fluidity.
  • Extruder is one of the types of plastic machinery, which originated in the 18th century. According to the material flow direction of the extruder and the angle of the center line of the screw, the extruder can be divided into a right-angle head and an oblique-angle head. The screw extruder relies on the pressure and shear force generated by the rotation of the screw, so that the material can be fully plasticized and uniformly mixed, and formed through the die.
  • Plastic extruders can be basically classified into twin-screw extruders, single-screw extruders and less common multi-screw extruders and screw-free extruders.
  • the material When the extruder is working, the material is discharged from the extrusion head under the extrusion action of the extrusion screw, and a product with a specific shape is formed under the action of the mold.
  • the extrusion effect depends not only on the extrusion pressure, but also on the extrusion temperature. The reason is that many materials are thermoplastic materials, and the higher the temperature, the better the fluidity. If the fluidity of the material does not meet the requirements, it will prematurely solidify and affect the molding.
  • the length of the extrusion tube is long, and the material is in the extrusion tube. When it flows, it will gradually cool down, resulting in poor fluidity.
  • the technical problem to be solved by the present invention is to provide an extrusion device with good material fluidity, which can improve the fluidity of the material by heating the extrusion pipe.
  • an extrusion device with good material flow includes a base, an extrusion pipe, an extrusion screw, a feeding hopper and a driving device, wherein the extrusion pipe is installed above the base, and the extrusion pipe is installed above the base.
  • An extrusion head is installed at the front end, the feed hopper is installed at the rear end, the extrusion screw is installed in the extrusion tube, and the rear end is connected with the drive device; heating jacket, heat transfer liquid tank and heating device ;
  • the heat-conducting liquid tank is installed on the base, the heating device is installed on the heat-conducting liquid tank, the heating sleeve is sleeved on the outer wall of the extrusion pipe, and a heat-conducting silica gel is arranged between the two.
  • the outer wall of the heat-conducting sleeve is wrapped with a heat-insulating sleeve; the heating sleeve is provided with a plurality of heat-conducting liquid channels extending in the axial direction, and the two ends of the heat-conducting liquid channels are connected by connecting heads in sequence, and two adjacent heat-conducting liquid channels are connected in sequence.
  • the ends on the same side of the channel are connected to the heat transfer liquid tank through a water pipe to form a circulating water path, and a circulating pump is installed on the water pipe.
  • the cross-section of the heating jacket is a circular ring, and the heat-conducting liquid channels are distributed in parallel along the circumferential direction thereof; the water flow directions in two adjacent heat-conducting liquid channels are opposite to each other through the connection of the connecting heads.
  • a heat-conducting rod and a heat-conducting rod fin are installed in the heat-conducting liquid tank, the heat-conducting rod is connected to the heating part of the heating device, and the heat-conducting rod fin is installed outside the heat-conducting rod.
  • the heating device is an electric heating device, and a fan is installed on the working part of the heating device.
  • a temperature sensor is also installed on the thermal fluid tank.
  • the heat transfer liquid tank is a thermal insulation water tank.
  • the outer wall of the heating jacket is also provided with a plurality of heat-conducting ribs, and the heat-conducting ribs extend to the heat-conducting liquid channel.
  • the drive device includes an extrusion motor, a gearbox and a transmission mechanism; the main shaft of the extrusion motor is connected with the input shaft of the gearbox through the transmission mechanism, and the output shaft of the gearbox is connected to the gearbox. The ends of the extrusion screw are connected.
  • the water pipe includes a water inlet pipe and a water outlet pipe, one end of the water inlet pipe is connected with the water outlet of the heat transfer liquid tank, and the other end is connected with the end of one of the heat transfer liquid channels; the water outlet pipe One end of the heat transfer liquid tank is connected with the water inlet of the heat transfer liquid tank, and the other end is connected with the end of another heat transfer liquid channel; the water pump is installed on the water inlet pipe.
  • the heat-conducting sleeve in the present invention directly surrounds the outer wall of the extrusion pipe, and heats the entire extrusion pipe in all directions, thereby better improving the fluidity of the material. In the traditional way, it is more conducive to the follow-up maintenance.
  • the heat-conducting sleeve in the present invention transmits the heat-conducting fluid by evenly distributing the heat-conducting fluid channels in the circumferential direction, so that the heat-conducting fluid circulates through the entire extrusion pipe, so that the temperature rise of the extrusion pipe is more uniform.
  • FIG. 1 is a structural perspective view of a preferred embodiment of the present invention
  • Fig. 2 is the structural side view of the embodiment shown in Fig. 1;
  • FIG. 3 is a top view of the structure of the embodiment shown in FIG. 1;
  • FIG. 4 is a cross-sectional view taken along the line A-A in FIG. 3 .
  • an extrusion device with good material flow includes a base 1, an extrusion pipe 2, an extrusion screw 16, a feeding hopper 8 and a driving device.
  • the extrusion pipe 2 is installed on the base 1.
  • an extrusion head is installed at the front end
  • a feeding hopper 8 is installed at the rear end
  • the extrusion screw 16 is installed in the extrusion pipe 2, and the rear end is connected with the driving device; it also includes a heating jacket 18, a heat transfer liquid tank 3 And the heating device 15;
  • the heat transfer liquid tank 3 is installed on the base 1, the heating device 15 is installed on the heat transfer liquid tank 3, the heating sleeve 18 is sleeved on the outer wall of the extrusion pipe 2, and the thermal conductive silica gel is arranged between the two, and the heat conduction sleeve 18
  • the outer wall is wrapped with a thermal insulation jacket.
  • the heating jacket 18 is provided with a number of heat-conducting fluid channels 18.1 extending along the axial direction.
  • the two ends of the heat-conducting fluid channels 18.1 are connected to each other through the connecting head 17.
  • the ends of the two adjacent heat-conducting fluid channels 18.1 on the same side pass through water pipes.
  • the heat transfer liquid tank 3 is connected to form a circulating water circuit, and a circulating pump 4 is installed on the water pipe.
  • the cross section of the heating jacket 18 is annular, and the heat transfer fluid channels 18.1 are distributed in parallel along its circumferential direction; The water flow directions in the two thermal fluid channels 18.1 are opposite to each other.
  • the heat-conducting liquid tank 3 is provided with a heat-conducting rod 14 and a heat-conducting rod fin 13, the heat-conducting rod 14 is connected to the heating part of the heating device 15, and the heat-conducting rod fins are connected to each other.
  • the sheet 13 is mounted on the outer side of the heat conducting rod 14 .
  • the heating device 15 is an electric heating device, and a fan 11 is installed on the working part of the heating device 15 .
  • the heating device 15 When the heating device 15 is working, its control components will generate heat, so in order to avoid the components being affected by high temperature, the heat is radiated to the external environment through the fan 11 .
  • a temperature sensor 7 is also installed on the thermal fluid tank 3 .
  • the temperature of the heat transfer fluid is detected by the temperature sensor 7, and when the temperature exceeds the appropriate temperature, the heating device 15 reduces the power and the water pump 4 reduces the flow rate.
  • the heat transfer liquid tank 3 is a thermal insulation water tank.
  • the outer wall of the heating jacket 18 is further provided with a plurality of heat-conducting ribs 18.2, and the heat-conducting ribs 18.2 extend to the heat-conducting liquid channel 18.1.
  • the heat-conducting ribs 18.2 are used between the heat-conducting liquid passages 18.1 to make the heat distribution more uniform, thereby improving the fluidity of the material as a whole.
  • the driving device includes an extrusion motor 12, a gearbox 9 and a transmission mechanism 10; the main shaft of the extrusion motor 12 is connected with the input shaft of the gearbox 9 through the transmission mechanism 10, and the output shaft of the gearbox 9 Connected to the end of the extrusion screw 16 .
  • the water pipe includes a water inlet pipe 5 and a water outlet pipe 6, one end of the water inlet pipe 5 is connected with the water outlet of the heat transfer fluid tank 3, and the other end is connected with the end of one of the heat transfer fluid passages 18.1; One end of the water outlet pipe 6 is connected with the water inlet of the heat transfer liquid tank 3 , and the other end is connected with the end of another heat transfer liquid channel 18.1 ; the water pump 4 is installed on the water inlet pipe 5 .

Abstract

一种物料流动性好的挤出装置，挤出管(2)安装在底座(1)的上方，其前端安装有挤出头，后端安装有进料斗(8)，挤出螺杆(16)安装于挤出管(2)内，其后端与驱动装置相连接；加热套(18)、导热液箱(3)和加热装置(15)；导热液箱(3)安装在底座(1)上，加热装置(15)安装在导热液箱(3)上，加热套(18)套装在挤出管(2)的外壁上，两者之间设置有导热硅胶，加热套(18)外壁包裹有保温套；加热套(18)设置有若干沿轴向延伸而成的导热液通道(18.1)，导热液通道(18.1)的两端通过连接头(17)依次首尾相连，其中两个相邻导热液通道(18.1)的同一侧的端部通过水管连接导热液箱(3)形成循环水路，水管上安装有循环泵(4)。加热套(18)直接包围在挤出管(2)外壁，对整个挤出管(2)进行全方位的加热，从而更好地改善物料流动性。

Description

一种物料流动性好的挤出装置 技术领域
本发明属于挤塑技术领域，具体涉及一种物料流动性好的挤出装置。
背景技术
挤出机是属于塑料机械的种类之一，起源于18世纪。挤出机依据机头料流方向以及螺杆中心线的夹角，可以将机头分成直角机头和斜角机头等。螺杆挤出机是依靠螺杆旋转产生的压力及剪切力，能使得物料可以充分进行塑化以及均匀混合，通过口模成型。塑料挤出机可以基本分类为双螺杆挤出机，单螺杆挤出机以及不多见的多螺杆挤出机以及无螺杆挤出机。
在挤出机工作时，物料在挤出螺杆的挤出作用下从挤出头出料，并在模具塑型作用下形成具有特定形状的产品。挤出效果不仅取决于挤出压力，还取决于挤出温度。原因是很多物料是热塑性材料，且温度越高则流动性越好，如果物料的流动性达不到要求就会过早固化而影响塑型，而挤出管长度较长，物料在挤出管里流动时会逐渐降温，导致流动性变差。
发明内容
本发明所要解决的技术问题是：提供一种物料流动性好的挤出装置，通过对挤出管进行加热来提高物料的流动性。
本发明是这样实现的：一种物料流动性好的挤出装置，包括底座、挤出管、挤出螺杆、进料斗和驱动装置，所述挤出管安装在所述底座的上方，其前端安装有挤出头，后端安装有所述进料斗，所述挤出螺杆安装于所述挤出管内，其后端与所述驱动装置相连接；加热套、导热液箱和加热装置；所述导热液箱安装在所述底座上，所述加热装置安装在所述导热液箱上，所述加热套套装在所述挤出管的外壁上，两者之间设置有导热硅胶，所述导热套外壁包裹有保温套；所述加热套设置有若干沿轴向延伸而成的导热液通道，所述导热液通道的两端通过连接头依次收尾相连，其中两个相邻导热液通道的同一侧的端部通过水管连接所述导热液箱形成循环水路，所述水管上安装有循环泵。
进一步地，所述加热套的截面为圆环形，所述导热液通道沿其周向平行分布；通过连接头的连接使相邻两个导热液通道内的水流方向互为反向。
进一步地，所述导热液箱内安装有导热棒和导热棒翅片，所述导热棒和所述加热装置的制热部相连接，所述导热棒翅片安装在所述导热棒的外侧。
进一步地，所述加热装置为电加热装置，所述加热装置的工作部安装有风扇。
进一步地，所述导热液箱上还安装有温度传感器。
进一步地，所述导热液箱为保温水箱。
进一步地，所述加热套的外壁还设置有若干导热筋，所述导热筋延伸至所述导热液通道。
进一步地，所述驱动装置包括挤出电机、变速箱和传动机构；所述挤出电机的主轴通过所述传动机构与所述变速箱的输入轴相连接，所述变速箱的输出轴与所述挤出螺杆的端部相连接。
进一步地，所述水管包括进水管和出水管，所述进水管的一端与所述导热液箱的出水口相连接，其另一端与其中一个导热液通道的端部相连接；所述出水管的一端与所述导热液箱的进水口相连接，其另一端与另一个导热液通道的端部相连接；所述水泵安装于所述进水管上。
本发明带来的有益效果是：
1、本发明中的导热套直接包围在挤出管外壁，对整个挤出管进行全方位的加热，从而更好地改善物料流动性，同时两者采取非固定安装，相对于直接利用电加热的传统方式而言，更加有利于后续的维护。
2、本发明中的导热套采取周向均匀分布导热液通道的方式传递导热液，使其循环流经整个挤出管，从而使挤出管的升温更加均匀。
附图说明
图1为本发明一个优选实施例的结构立体图；
图2为图1所示实施例的结构侧视图；
图3为图1所示实施例的结构俯视图；
图4为图3中A-A向剖视图。
具体实施方式
下面结合附图对本发明作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。
如图1至4所示，一种物料流动性好的挤出装置，包括底座1、挤出管2、挤出螺杆16、进料斗8和驱动装置，挤出管2安装在底座1的上方，其前端安装有挤出头，后端安装有进料斗8，挤出螺杆16安装于挤出管2内，其后端与驱动装置相连接；还包括加热套18、导热液箱3和加热装置15；导热液箱3安装在底座1上，加热装置15安装在导热液箱3上，加热套18套装在挤出管2的外壁上，两者之间设置有导热硅胶，导 热套18外壁包裹有保温套。加热套18设置有若干沿轴向延伸而成的导热液通道18.1，导热液通道18.1的两端通过连接头17依次收尾相连，其中两个相邻导热液通道18.1的同一侧的端部通过水管连接导热液箱3形成循环水路，水管上安装有循环泵4。
作为一种导热液通道18.1的具体分布方式，在一可选实施例中，加热套18的截面为圆环形，导热液通道18.1沿其周向平行分布；通过连接头17的连接使相邻两个导热液通道18.1内的水流方向互为反向。
作为一种具体的加热方式，在一可选实施例中，导热液箱3内安装有导热棒14和导热棒翅片13，导热棒14和加热装置15的制热部相连接，导热棒翅片13安装在导热棒14的外侧。
在一可选实施例中，加热装置15为电加热装置，加热装置15的工作部安装有风扇11。加热装置15在工作时，其控制元器件会发热，因此为了避免元器件受到高温影响，通过风扇11将热量散发到外界环境中。
在一可选实施例中，导热液箱3上还安装有温度传感器7。通过温度传感器7来检测导热液的温度，当超过合适温度后，加热装置15降低功率且水泵4降低流量。
在一可选实施例中，导热液箱3为保温水箱。
在一可选实施例中，加热套18的外壁还设置有若干导热筋18.2，导热筋18.2延伸至导热液通道18.1。导热液通道18.1之间通过导热筋18.2来使热量分布更加均匀，从而整体改善物料的流动性。
在一可选实施例中，驱动装置包括挤出电机12、变速箱9和传动机构10；挤出电机12的主轴通过传动机构10与变速箱9的输入轴相连接，变速箱9的输出轴与挤出螺杆16的端部相连接。
在一可选实施例中，水管包括进水管5和出水管6，进水管5的一端与导热液箱3的出水口相连接，其另一端与其中一个导热液通道18.1的端部相连接；出水管6的一端与导热液箱3的进水口相连接，其另一端与另一个导热液通道18.1的端部相连接；水泵4安装于进水管5上。
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和变形，这些改进和变形也应视为本发明的保护范围。

Claims (9)

  1. 一种物料流动性好的挤出装置，包括底座(1)、挤出管(2)、挤出螺杆(16)、进料斗(8)和驱动装置，所述挤出管(2)安装在所述底座(1)的上方，其前端安装有挤出头，后端安装有所述进料斗(8)，所述挤出螺杆(16)安装于所述挤出管(2)内，其后端与所述驱动装置相连接；其特征在于，还包括加热套(18)、导热液箱(3)和加热装置(15)；所述导热液箱(3)安装在所述底座(1)上，所述加热装置(15)安装在所述导热液箱(3)上，所述加热套(18)套装在所述挤出管(2)的外壁上，两者之间设置有导热硅胶，所述导热套(18)外壁包裹有保温套；所述加热套(18)设置有若干沿轴向延伸而成的导热液通道(18.1)，所述导热液通道(18.1)的两端通过连接头(17)依次收尾相连，其中两个相邻导热液通道(18.1)的同一侧的端部通过水管连接所述导热液箱(3)形成循环水路，所述水管上安装有循环泵(4)。
  2. 根据权利要求1所述的物料流动性好的挤出装置，其特征在于，所述加热套(18)的截面为圆环形，所述导热液通道(18.1)沿其周向平行分布；通过连接头(17)的连接使相邻两个导热液通道(18.1)内的水流方向互为反向。
  3. 根据权利要求1所述的物料流动性好的挤出装置，其特征在于，所述导热液箱(3)内安装有导热棒(14)和导热棒翅片(13)，所述导热棒(14)和所述加热装置(15)的制热部相连接，所述导热棒翅片(13)安装在所述导热棒(14)的外侧。
  4. 根据权利要求3所述的物料流动性好的挤出装置，其特征在于，所述加热装置(15)为电加热装置，所述加热装置(15)的工作部安装有风扇(11)。
  5. 根据权利要求1所述的物料流动性好的挤出装置，其特征在于，所述导热液箱(3)上还安装有温度传感器(7)。
  6. 根据权利要求1所述的物料流动性好的挤出装置，其特征在于，所述导热液箱(3)为保温水箱。
  7. 根据权利要求1所述的物料流动性好的挤出装置，其特征在于，所述加热套(18)的外壁还设置有若干导热筋(18.2)，所述导热筋(18.2)延伸至所述导热液通道(18.1)。
  8. 根据权利要求1所述的物料流动性好的挤出装置，其特征在于，所述驱动装置包括挤出电机(12)、变速箱(9)和传动机构(10)；所述挤出电机(12)的主轴通过所述传动机构(10)与所述变速箱(9)的输入轴相连接，所述变速箱(9)的输出轴与所述挤出螺杆(16)的端部相连接。
  9. 根据权利要求1所述的物料流动性好的挤出装置，其特征在于，所述水管包括进水管(5)和出水管(6)，所述进水管(5)的一端与所述导热液箱(3)的出水口相连接，其另 一端与其中一个导热液通道(18.1)的端部相连接；所述出水管(6)的一端与所述导热液箱(3)的进水口相连接，其另一端与另一个导热液通道(18.1)的端部相连接；所述水泵(4)安装于所述进水管(5)上。
PCT/CN2020/134138 2020-12-05 2020-12-05 一种物料流动性好的挤出装置 WO2022116219A1 (zh)

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JP2000351105A (ja) * 1999-06-10 2000-12-19 Ain Eng Kk 中空樹脂成形板の押出成形方法及び装置
JP2005321720A (ja) * 2004-05-11 2005-11-17 Fuji Photo Film Co Ltd 光学部材用クラッドパイプの製造方法及び装置
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