CN115214106B - Tube extruder die and extrusion method for producing precision tube body with adjustable wall thickness - Google Patents

Tube extruder die and extrusion method for producing precision tube body with adjustable wall thickness Download PDF

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CN115214106B
CN115214106B CN202210863319.1A CN202210863319A CN115214106B CN 115214106 B CN115214106 B CN 115214106B CN 202210863319 A CN202210863319 A CN 202210863319A CN 115214106 B CN115214106 B CN 115214106B
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die
cone
conical
diversion
adjusting
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CN115214106A (en
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卢熹
李盼
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Southeast University
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Southeast University
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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
    • 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
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding
    • B21C25/02—Dies
    • 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
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

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

Abstract

The invention discloses a pipe type extruder die with adjustable wall thickness for producing a precise pipe body, which comprises a machine head used for connecting an extruder and a flow dividing cone arranged at the front end of the machine head; the front end of the diversion cone is provided with a die; the machine head, the shunt cone and the inner cavity of the die are communicated to form a runner cavity; the split cone comprises a conical split surface, an annular split channel and a core die butt joint section; the front end of the core mold butt joint section is provided with a core mold; the mandrel comprises a first diversion conical surface and a diversion ejection surface; the inner cavity of the die is provided with a flow guide surface matched with the first flow guide conical surface; a flow passage is arranged between the flow guide surface and the first flow guide conical surface; the front end of the diversion face is provided with a conical nozzle; the distance between the first diversion conical surface and the conical nozzle is adjustable; a first-stage air blowing channel is arranged in the split cone; the air blowing channel is communicated with a secondary air blowing channel in the core mold.

Description

生产精密管体的壁厚可调节的管型挤出机模具及挤出方法Tube extruder die and extrusion method for producing precision tube body with adjustable wall thickness

技术领域Technical Field

本发明属于管体挤出机的技术领域，具体涉及一种生产精密管体的壁厚可调节的管型挤出机模具及挤出方法。The invention belongs to the technical field of tube extruders, and in particular relates to a tube extruder die and an extrusion method for producing a precision tube with adjustable wall thickness.

背景技术Background technique

目前的挤出机模具多为专用模具，一套模具只能用来生产同一种壁厚的产品或是依靠吹气量在很小的范围内调节壁厚，因此造成模具的利用率过低，针对不同壁厚的产品，需要制备不同的模具；At present, most of the extruder molds are special molds. One set of molds can only be used to produce products with the same wall thickness or adjust the wall thickness within a very small range by the blowing volume. Therefore, the utilization rate of the mold is too low. Different molds need to be prepared for products with different wall thicknesses.

且在使用同种材料的情况下生产不同内径产品时，需要重新更换模具，影响生产效率。Moreover, when the same material is used to produce products with different inner diameters, the mold needs to be replaced, which affects production efficiency.

发明内容Summary of the invention

本发明要解决的技术问题：本发明的目的是为了解决现有技术中的不足，提供一种连续可调内径尺寸的管型挤出机模具，通过调节口模出料口与芯模末端锥形区域所对应的位置来调节内径的大小，以此来减少模具的数量，节约生产时间的连续生产的管型挤出机模具及挤出方法。Technical problem to be solved by the present invention: The purpose of the present invention is to solve the deficiencies in the prior art and to provide a tube extruder die with a continuously adjustable inner diameter. The inner diameter can be adjusted by adjusting the positions corresponding to the outlet of the die and the tapered area at the end of the core die, thereby reducing the number of dies and saving production time for a continuously produced tube extruder die and extrusion method.

本发明的技术方案：本发明所述的生产精密管体的壁厚可调节的管型挤出机模具，包括用于连接挤出机的机头和设置在所述机头前端的分流锥；所述分流锥前端设有口模；所述机头、分流锥及口模内腔连通，形成流道腔；The technical solution of the present invention: The tube extruder die for producing a precision tube with adjustable wall thickness of the present invention comprises a die head for connecting the extruder and a diverter cone arranged at the front end of the die head; a die is arranged at the front end of the diverter cone; the die head, the diverter cone and the inner cavity of the die are connected to form a flow channel cavity;

所述分流锥包括锥形分流面、环形分流道以及芯模对接段；所述芯模对接段前端设有芯模；The diverter cone comprises a conical diverter surface, an annular diverter channel and a core mold docking section; a core mold is provided at the front end of the core mold docking section;

所述芯模包括第一导流锥形面和引流喷出面；The core mold includes a first flow-guiding conical surface and a flow-guiding ejection surface;

所述口模内腔设有匹配所述第一导流锥形面的导流面；所述导流面与所述第一导流锥形面间设有流道；所述导流面前端设有锥形喷口；The inner cavity of the die is provided with a guide surface matching the first guide conical surface; a flow channel is provided between the guide surface and the first guide conical surface; and a conical nozzle is provided at the front end of the guide surface;

所述第一导流锥形面与所述锥形喷口间距离可调；The distance between the first guide conical surface and the conical nozzle is adjustable;

所述分流锥内设有一级吹气通道；所述吹气通道与所述芯模内的二级吹气通道连通。A primary air blowing channel is provided in the diverter cone; the air blowing channel is communicated with a secondary air blowing channel in the core mold.

进一步的，所述口模包括第一凸缘和对接所述分流锥的第二凸缘；压板通过压紧所述第一凸缘，将所述口模固定在所述分流锥上。Furthermore, the die includes a first flange and a second flange docking with the diverter cone; the pressing plate fixes the die on the diverter cone by pressing the first flange.

进一步的，模具锁紧螺钉依次贯穿压板及分流锥，旋入机头内，将所述口模、分流锥及机头固定成一个整体。Furthermore, the mold locking screw passes through the pressing plate and the diverter cone in sequence, and is screwed into the die head to fix the die, the diverter cone and the die head into a whole.

进一步的，所述压板与所述分流锥间还设有调节所述口模与所述分流锥间距离的调节螺母；所述调节螺母外端面接触所述第二凸缘。Furthermore, an adjusting nut for adjusting the distance between the die and the diverter cone is provided between the pressing plate and the diverter cone; and an outer end surface of the adjusting nut contacts the second flange.

进一步的，所述口模外端面与所述压板内端面设有间隙；Furthermore, a gap is provided between the outer end surface of the die and the inner end surface of the pressing plate;

沿所述压板外端面圆周方向，均匀等距设有定心螺栓；所述压板外端面内设有匹配所述定心螺栓的螺纹；所述定心螺栓可调节所述口模与所述压板的同心度。Centering bolts are evenly and equidistantly arranged along the circumferential direction of the outer end surface of the pressing plate; threads matching the centering bolts are arranged inside the outer end surface of the pressing plate; the centering bolts can adjust the concentricity of the die and the pressing plate.

进一步的，所述引流喷出面前端设有倒角。Furthermore, the front end of the drainage outlet surface is provided with a chamfer.

本发明还公开了一种适用于高精度管体连续生产的管型挤出机模具的挤出方法，包括熔融材料挤出方法，产品内径调节方法和定心方法；The present invention also discloses an extrusion method of a tube extruder die suitable for continuous production of high-precision tube bodies, including a molten material extrusion method, a product inner diameter adjustment method and a centering method;

所述熔融材料挤出方法包括如下步骤,熔融的材料通过挤出机法兰流入机头，经由分流锥流入芯模与口模的流道腔中，再经由口模前端的锥形喷口和引流喷出面流出；The molten material extrusion method comprises the following steps: the molten material flows into the die head through the extruder flange, flows into the flow channel cavity of the core die and the die through the diverter cone, and then flows out through the conical nozzle at the front end of the die and the drainage ejection surface;

产品内径调节方法，通过改变第一导流锥形面与锥形喷口的距离，调节产品挤出内径大小；包括调节芯模与分流锥连接处垫片的厚度以及通过调节螺母调节所述芯模相对所述锥形喷口的侵入量；A method for adjusting the inner diameter of a product, by changing the distance between the first guide conical surface and the conical nozzle, to adjust the size of the inner diameter of the extruded product; including adjusting the thickness of the gasket at the connection between the core mold and the diverter cone and adjusting the intrusion amount of the core mold relative to the conical nozzle by adjusting the nut;

所述定心方法，包括调节芯模的第一导流锥形面与所述锥形喷口同心；包括调节定心螺栓对口模的横向位置进行微调。The centering method comprises adjusting the first guide conical surface of the core mold to be concentric with the conical nozzle; and adjusting the centering bolt to fine-tune the lateral position of the nozzle.

有益效果Beneficial Effects

本发明与现有技术相比的有益效果：The beneficial effects of the present invention compared with the prior art are as follows:

通过调节装置来调节口模出料口与芯模末端锥形区域相对应的位置，来调节产品内孔的直径，达到连续调节产品内径尺寸的作用，且无需拆装模具。可以有效减少模具的数量，节省加工的时间。The adjustment device is used to adjust the position of the die outlet and the tapered area at the end of the core die to adjust the diameter of the inner hole of the product, so as to achieve the effect of continuously adjusting the inner diameter of the product without disassembling the mold. It can effectively reduce the number of molds and save processing time.

附图说明BRIEF DESCRIPTION OF THE DRAWINGS

图1为本发明的连续可调内径尺寸的管型挤出机模具的结构示意图；FIG1 is a schematic structural diagram of a tube extruder die with continuously adjustable inner diameter according to the present invention;

图2为图1中B-B面的剖视图；Fig. 2 is a cross-sectional view of the B-B plane in Fig. 1;

图3为图1中C-C面的剖视图；Fig. 3 is a cross-sectional view taken along the C-C plane in Fig. 1;

图4为图1中D-D面的剖视图；Fig. 4 is a cross-sectional view of the D-D plane in Fig. 1;

图5为本发明的管型挤出机模具的芯模、垫片和分流锥的连接示意图；5 is a schematic diagram of the connection of the core mold, the gasket and the diverter cone of the tube extruder mold of the present invention;

图6为图5中G-G面的剖视图。FIG6 is a cross-sectional view of the G-G plane in FIG5.

具体实施方式Detailed ways

为了加深本发明的理解，下面我们将结合附图对本发明作进一步详述，该实施例仅用于解释本发明，并不构成对本发明保护范围的限定。In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

如图1-6所示，本发明提出的生产精密管体的壁厚可调节的管型挤出机模具，包括用于连接挤出机的机头1和设置在机头1前端的分流锥2；分流锥2前端设有口模6；机头1、分流锥2及口模6内腔连通，形成流道腔；As shown in Fig. 1-6, the tube extruder die for producing a precision tube with adjustable wall thickness proposed by the present invention comprises a die head 1 for connecting the extruder and a diverter cone 2 arranged at the front end of the die head 1; a die 6 is arranged at the front end of the diverter cone 2; the inner cavities of the die head 1, the diverter cone 2 and the die 6 are connected to form a flow channel cavity;

分流锥2包括锥形分流面20、环形分流道21以及芯模对接段22；芯模对接段22前端设有芯模7；The flow dividing cone 2 comprises a conical flow dividing surface 20, an annular flow dividing channel 21 and a core mold docking section 22; a core mold 7 is provided at the front end of the core mold docking section 22;

芯模7包括第一导流锥形面71和引流喷出面72；The core mold 7 includes a first flow guiding conical surface 71 and a flow guiding ejection surface 72;

口模6内腔设有匹配第一导流锥形面71的导流面60；导流面60与第一导流锥形面71间设有流道；导流面60前端设有锥形喷口63；The inner cavity of the die 6 is provided with a guide surface 60 matching the first guide conical surface 71; a flow channel is provided between the guide surface 60 and the first guide conical surface 71; a conical nozzle 63 is provided at the front end of the guide surface 60;

第一导流锥形面71与锥形喷口63间距离可调；The distance between the first guide conical surface 71 and the conical nozzle 63 is adjustable;

分流锥2内设有一级吹气通道9；吹气通道9与芯模7内的二级吹气通道连通。口模6包括第一凸缘61和对接分流锥2的第二凸缘62；压板5通过压紧第一凸缘61，将口模6固定在分流锥2上。压板5与分流锥2间还设有调节口模6与分流锥2间距离的调节螺母3；调节螺母3外端面接触第二凸缘62。模具锁紧螺钉42依次贯穿压板5及分流锥2，旋入机头1内，将口模6、分流锥2及机头1固定成一个整体。A primary blowing channel 9 is provided in the diverter cone 2; the blowing channel 9 is connected to the secondary blowing channel in the core mold 7. The die 6 includes a first flange 61 and a second flange 62 that docks the diverter cone 2; the pressing plate 5 fixes the die 6 on the diverter cone 2 by pressing the first flange 61. An adjusting nut 3 for adjusting the distance between the die 6 and the diverter cone 2 is also provided between the pressing plate 5 and the diverter cone 2; the outer end surface of the adjusting nut 3 contacts the second flange 62. The mold locking screw 42 passes through the pressing plate 5 and the diverter cone 2 in sequence, and is screwed into the die head 1 to fix the die 6, the diverter cone 2 and the die head 1 into a whole.

口模6外端面与压板5内端面设有间隙；A gap is provided between the outer end surface of the die 6 and the inner end surface of the pressing plate 5;

沿压板5外端面圆周方向，均匀等距设有定心螺栓41；压板5外端面内设有匹配定心螺栓41的螺纹；定心螺栓41可调节口模6与压板5的同心度。Centering bolts 41 are evenly and equidistantly arranged along the circumferential direction of the outer end surface of the pressing plate 5 ; threads matching the centering bolts 41 are arranged inside the outer end surface of the pressing plate 5 ; the centering bolts 41 can adjust the concentricity of the die 6 and the pressing plate 5 .

本发明还包括一种适用于高精度管体连续生产的管型挤出机模具的挤出方法，包括熔融材料挤出方法，产品内径调节方法和定心方法；The present invention also includes an extrusion method of a tube-shaped extruder die suitable for continuous production of high-precision tube bodies, including a molten material extrusion method, a product inner diameter adjustment method and a centering method;

熔融材料挤出方法包括如下步骤,熔融的材料通过挤出机法兰流入机头1，经由分流锥2流入芯模7与口模6的流道腔中，再经由口模6前端的锥形喷口63和引流喷出面72流出；The molten material extrusion method comprises the following steps: the molten material flows into the die head 1 through the extruder flange, flows into the flow channel cavity of the core die 7 and the die 6 through the diverter cone 2, and then flows out through the conical nozzle 63 at the front end of the die 6 and the drainage ejection surface 72;

产品内径调节方法，通过改变第一导流锥形面71与锥形喷口63的距离，调节产品挤出内径大小；包括调节芯模7与分流锥2连接处垫片8的厚度以及通过调节螺母3调节芯模7相对锥形喷口63的侵入量；The inner diameter adjustment method of the product is to adjust the inner diameter of the extruded product by changing the distance between the first guide conical surface 71 and the conical nozzle 63; the method includes adjusting the thickness of the gasket 8 at the connection between the core mold 7 and the diverter cone 2 and adjusting the intrusion amount of the core mold 7 relative to the conical nozzle 63 by adjusting the nut 3;

定心方法，包括调节芯模7的第一导流锥形面71与锥形喷口63同心；包括调节定心螺栓41对口模6的横向位置进行微调。The centering method includes adjusting the first guide conical surface 71 of the core mold 7 to be concentric with the conical nozzle 63; and adjusting the centering bolt 41 to fine-tune the lateral position of the mouth mold 6.

以上显示和描述了本发明的基本原理、主要特征和优点。本领域的技术人员应该了解本发明不受上述具体实施例的限制，上述具体实施例和说明书中的描述只是为了进一步说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护的范围由权利要求书及其等效物界定。The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above specific embodiments. The above specific embodiments and the description in the specification are only for further illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of the present invention to be protected is defined by the claims and their equivalents.

Claims (4)

1.A pipe type extruder die with adjustable wall thickness for producing a precise pipe body is characterized in that: comprises a machine head (1) for connecting an extruder and a flow dividing cone (2) arranged at the front end of the machine head (1); the front end of the shunt cone (2) is provided with a die (6); the machine head (1), the shunt cone (2) and the inner cavity of the die (6) are communicated to form a runner cavity;
The diverter cone (2) comprises a conical diversion surface (20), an annular diversion channel (21) and a core die butt joint section (22); the front end of the core mold butt joint section (22) is provided with a core mold (7);
The mandrel (7) comprises a first diversion conical surface (71) and a diversion ejection surface (72);
A guide surface (60) matched with the first guide conical surface (71) is arranged in the inner cavity of the die (6); a flow passage is arranged between the flow guiding surface (60) and the first flow guiding conical surface (71); the front end of the flow guiding surface (60) is provided with a conical nozzle (63);
The distance between the first diversion conical surface (71) and the conical nozzle (63) is adjustable;
A primary air blowing channel (9) is arranged in the shunt cone (2); the air blowing channel (9) is communicated with a secondary air blowing channel in the mandrel (7);
The die (6) comprises a first flange (61) and a second flange (62) which is abutted against the flow dividing cone (2); the pressing plate (5) fixes the die (6) on the flow dividing cone (2) by pressing the first flange (61);
the die locking screw (42) sequentially penetrates through the pressing plate (5) and the flow dividing cone (2) and is screwed into the machine head (1), so that the die (6), the flow dividing cone (2) and the machine head (1) are fixed into a whole;
An adjusting nut (3) for adjusting the distance between the die (6) and the flow distribution cone (2) is further arranged between the pressing plate (5) and the flow distribution cone (2); the outer end surface of the adjusting nut (3) contacts the second flange (62).
2. The adjustable wall thickness tubular extruder die for producing precision tubular bodies of claim 1 wherein: a gap is formed between the outer end surface of the die (6) and the inner end surface of the pressing plate (5);
Centering bolts (41) are uniformly and equidistantly arranged along the circumferential direction of the outer end surface of the pressing plate (5); threads matched with the centering bolt (41) are arranged in the outer end face of the pressing plate (5); the centering bolt (41) can adjust concentricity of the die (6) and the pressing plate (5).
3. The adjustable wall thickness tubular extruder die for producing precision tubular bodies of claim 1 wherein: the front end of the drainage outlet surface (72) is provided with a chamfer.
4. An extrusion method of a pipe type extruder die with adjustable wall thickness for producing a precise pipe body is characterized by comprising the following steps of: the extrusion method using the pipe-type extruder die for producing a precision pipe body as claimed in any one of claims 1 to 3, which has an adjustable wall thickness; the extrusion method comprises a molten material extrusion method, a product inner diameter adjustment method and a centering method;
The method for extruding the molten material comprises the following steps that the molten material flows into a machine head (1) through an extruder flange, flows into a flow channel cavity of a core mold (7) and a mouth mold (6) through a diversion cone (2), and flows out through a conical nozzle (63) and a drainage ejection surface (72) at the front end of the mouth mold (6);
The method for adjusting the inner diameter of the product comprises the steps of adjusting the extrusion inner diameter of the product by changing the distance between a first diversion conical surface (71) and a conical nozzle (63); comprises the steps of adjusting the thickness of a gasket (8) at the joint of a mandrel (7) and a diverter cone (2), and adjusting the invasion amount of the mandrel (7) relative to a conical nozzle (63) through an adjusting nut (3);
The centering method comprises the steps of adjusting a first diversion conical surface (71) of a mandrel (7) to be concentric with the conical nozzle (63); comprises adjusting a centering bolt (41) to finely adjust the transverse position of the die (6).
CN202210863319.1A 2022-07-20 2022-07-20 Tube extruder die and extrusion method for producing precision tube body with adjustable wall thickness Active CN115214106B (en)

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CN211941995U (en) * 2019-12-26 2020-11-17 陈汉彪 A washing machine drain pipe extruder head
CN215396783U (en) * 2021-06-30 2022-01-04 南京创博机械设备有限公司 Novel pipe die head

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CN201235599Y (en) * 2008-06-27 2009-05-13 宁波方力集团有限公司 Extrusion mould head for plastic tube
CN106346742A (en) * 2016-09-30 2017-01-25 福州大学 High-precision large-diameter pipe extruder head and use method thereof
CN211941995U (en) * 2019-12-26 2020-11-17 陈汉彪 A washing machine drain pipe extruder head
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CN215396783U (en) * 2021-06-30 2022-01-04 南京创博机械设备有限公司 Novel pipe die head

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