WO2018210036A1 - 厚板挤出成型设备 - Google Patents

厚板挤出成型设备 Download PDF

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Publication number
WO2018210036A1
WO2018210036A1 PCT/CN2018/078298 CN2018078298W WO2018210036A1 WO 2018210036 A1 WO2018210036 A1 WO 2018210036A1 CN 2018078298 W CN2018078298 W CN 2018078298W WO 2018210036 A1 WO2018210036 A1 WO 2018210036A1
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WO
WIPO (PCT)
Prior art keywords
roll set
roll
rolls
thick plate
extrusion molding
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PCT/CN2018/078298
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English (en)
French (fr)
Inventor
何海潮
刘红彬
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苏州金纬机械制造有限公司
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Publication of WO2018210036A1 publication Critical patent/WO2018210036A1/zh

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Classifications

    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/16—Straightening or flattening
    • B29C53/18—Straightening or flattening of plates or sheets
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/84—Heating or cooling

Definitions

  • the invention belongs to the technical field of plastic sheet metal forming, and particularly relates to an extrusion molding apparatus for producing plastic thick plates.
  • Plastic sheets are widely used in many fields of industrial products.
  • the most widely used PP/PE thick board is an engineering material, mainly used in the chemical industry, food industry, anti-corrosion industry, purification industry, environmental protection equipment production industry.
  • the traditional PP/PE thick plate production line is naturally cooled from the plate from the three-roll forming machine to the tractor. Since the plate is compared, the rapid cooling is easy to shrink, and the internal stress cannot be released, so the plate is greatly deformed. Lead to poor product performance, unable to meet customer needs and secondary processing.
  • a thick plate extrusion molding apparatus including an extruder, an extrusion die, a three roll forming machine, a leveling device disposed downstream of the three roll forming machine, and a drafting machine comprising: a mounting bracket extending in a conveying direction of the thick plate; at least one pair of pressing roller sets disposed on the mounting bracket, the pair of pressing roller sets comprising: a fixed setting The lower roller set on the mounting frame and the upper roller set slidably disposed in the conveying direction, and the upper roller group and the lower roller group are further provided for adjusting the upper roller group and the lower roller group A lifting mechanism between the gaps, the upper roller group and the lower roller group respectively comprise a plurality of tempering rollers arranged in parallel, and the tempering roller is provided with hot water.
  • the screeding device comprises two pairs of the pressing roller sets, which are: a first pressing roller group located upstream and a second pressing roller group located downstream of the first pressing roller group,
  • a press roll set includes: a first upper roll set and a first lower roll set, the second press roll set includes a second upper roll set and a second lower roll set, wherein a surface temperature of the first press roll set is greater than a second press roll The surface temperature of the group.
  • a further aspect of the present application is that the surface temperature of the first pressure roller set is 70 to 60 ° C, and the surface temperature of the second pressure roller set is 60 to 50 ° C.
  • a further aspect of the present application is that the inner cavities of the plurality of tempering rolls located in the same upper roll group or the lower roll set are in communication with each other, and the screeding device comprises a plurality of tempering rolls respectively connected to the respective roll sets. Independent temperature control system.
  • each of the upper roll set/lower roll set has a drive motor for driving the set of temper roll rotations, and each temper roll is synchronized with the line speed of the three roll form.
  • a further aspect of the present application is that a plurality of tempering rolls and a plurality of tempering rolls of the lower roll set in the upper roll set in the same pair of press rolls are staggered along the conveying direction.
  • the plurality of tempering rolls in the upper roll group in the same pair of press rolls are aligned with the plurality of temper rolls in the lower roll set in the conveying direction.
  • the set of press rolls further includes a horizontal moving mechanism for adjusting the relative positions of the upper roll set and the lower roll set in the conveying direction.
  • the set of press rolls further includes an elevating mechanism for adjusting the relative positions of the upper roll set and the lower roll set in a direction perpendicular to the conveying direction.
  • the invention has the advantages that after the sheet is extruded in the three-roll forming machine, the temperature can be slowly lowered under a certain pressure and temperature, thereby achieving the flattening and flattening of the thick plate, preventing deformation due to rapid cooling, and obtaining the surface of the plate. Plates with high gloss and flatness.
  • Figure 1 is a front view of the present invention
  • Figure 2 is a perspective view of the leveling device of the present invention.
  • Figure 3 is a perspective view of a pressure roller set
  • Figure 4 is a front view of the pressure roller set
  • Figure 5 is a partial enlarged view of a portion A in Figure 3;
  • Figures 1 and 2 show a thick plate extrusion molding apparatus comprising an extruder (not shown), an extrusion die (not shown), a three-roll forming machine 20, and a three-roll forming machine.
  • the molten material is extruded through a die, and the extruded material then enters the three roll forming machine 20.
  • the three-roll forming machine 20 includes a lower roll 23, a middle roll 22 and an upper roll 21 which are disposed in order from upstream to downstream, and a discharge port of the extrusion die is located between the middle roll 22 and the lower roll 23, the plate
  • the three-roll forming machine 20 is introduced from between the intermediate roll 22 and the lower roll 23, bypassing the intermediate roll 22, and then passing between the upper roll 21 and the intermediate roll 22 to enter the leveling device.
  • the plate is pressed and heated in the leveling device, the internal stress is removed, and after preliminary setting, it is naturally cooled by passing the conveying roller. Then, the plate is slit, and the cut plate is transported to the automatic stacking table through the conveying unit for stacking.
  • the leveling device includes a mounting bracket 11 extending in the conveying direction of the thick plate, a first upper roller group 1 and a first lower roller group 4 correspondingly disposed above and below, and a second upper roller correspondingly disposed above and below.
  • the first upper roller set 1 comprising a plurality of upper tempering rolls 2 and a first upper drive motor 3 for driving the rotation of the upper tempering rolls 2;
  • the roller set 4 includes a plurality of lower tempering rolls 5 and a first lower drive motor 6 that drives the rotation of the lower retort rolls 5;
  • the second upper roll set 7 includes a plurality of upper tempering rolls 2 and drives these upper returns
  • the second upper drive motor 8 that rotates the fire roller 2;
  • the second lower roller set 9 includes a plurality of lower tempering rollers 5 and a second lower drive motor 10 that drives the rotation of the lower retread rollers 5.
  • the spacing between any two adjacent upper tempering rolls 2 on the first upper roll set 1 is equal to the spacing between any adjacent two lower tempering rolls 5 on the first lower roll set 4;
  • the spacing between any two adjacent upper tempering rolls 2 on the second upper roll set 7 is equal to the spacing between any adjacent two lower tempering rolls 5 on the second lower roll set 9.
  • the rotational speeds of the respective upper tempering rolls 2 and the respective lower tempering rolls 5 are the same and are synchronized with the linear speed of the three-roll forming machine.
  • the same side end portions of the plurality of tempering rolls in each roller group are fixedly provided with a transition sprocket, and the output ends of the driving motors are respectively provided with a driving sprocket, and the driving sprocket and each transition sprocket are connected by a chain drive .
  • each of the upper roller group and the lower roller group respectively comprise a plurality of tempering rollers arranged in parallel, and a plurality of tempering rollers in each roller group are connected in series by a metal hose, and the tempering roller is internally provided with hot water.
  • a plurality of mutually independent temperature control systems 25 each of which is freely adjustable in temperature by its respective temperature control system 25 to effect stepwise cooling of the sheet.
  • the surface temperature of the upper reheating roller 2 and the lower reheating roller 5 in the first pressure roller group is preferably 70 to 60 ° C
  • the upper reheating roller 2 of the second pressing roller group is The surface temperature of the lower retort roller 5 is preferably 60 to 50 ° C.
  • the press roll set further includes a horizontal moving mechanism 14 for adjusting the relative positions of the upper roll set and the lower roll set in the conveying direction, and by adjusting the position of the upper roll set, a plurality of upper tempering rolls and the next back can be made
  • the fire rolls are staggered along the conveying direction, or a plurality of upper tempering rolls are aligned with the plurality of lower tempering rolls in the conveying direction.
  • the horizontal moving mechanism 14 adopts a screw nut structure, and the roller frame of the upper roller group or the lower roller group of the upper roller group is relatively moved in the conveying direction by rotating the screw rod, thereby adjusting the alignment between the upper roller group and the lower roller group. Or staggered from each other.
  • the first lower roller set and the second lower roller set are fixedly mounted on the mounting frame 11, and the first upper roller set and the second upper roller set are respectively mounted on the lifting mechanism 13 by a lifting mechanism 13
  • a lifting mechanism 13 is respectively disposed at four corners of the first lower roller group, and the lifting mechanism adopts a screw nut structure to realize the distance between the first upper roller group and the first lower roller group. Accurate adjustment to meet the processing needs of different thickness plates, and to ensure that the upper retort roller 2 and the lower retort roller 5 are pressed against the upper and lower surfaces of the plate to play the role of pressure leveling.
  • the specific structure of the lifting mechanism 13 and the horizontal moving mechanism 14 can be variously designed according to actual conditions, which are commonly used by those skilled in the art, and therefore will not be described in detail herein.
  • the present invention provides a leveling device downstream of the three-roll forming machine, stepwise cooling of the thick plate by the leveling device, and the upper and lower plates are passed through a plurality of upper tempering rolls and a plurality of lower tempering rolls. Pressing and leveling prevents the plate from the three-roll forming machine from rapidly cooling and deforming, thereby maintaining the gloss and flatness of the plate surface, effectively improving the production speed and product quality, and is suitable for popularization in the production of thick plates. .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Crushing And Grinding (AREA)

Abstract

一种厚板挤出成型设备，包括挤出机、挤出模头、三辊成型机（20）、设置在三辊成型机（20）下游的整平装置和牵伸机，整平装置包括至少一对压辊组，压辊组具有一定的表面温度，经过挤出成型后的板材在压辊组之间穿过，使板材在压力下缓慢冷却，避免板材温度降低过快而变形。

Description

厚板挤出成型设备 技术领域
本发明属于塑料板材成型技术领域，特别涉及一种用于生产塑料厚板的挤出成型设备。
 背景技术
塑料板材广泛应用于工业产品的诸多领域，其中应用最为广泛的PP/PE厚板是一种工程材料，主要应用于化工工业、食品行业、防腐行业、净化行业、环保设备生产行业。目前传统的PP/PE厚板生产线，从三辊成型机出来的板材到牵引机之间经过自然冷却，由于板材比较后，急速冷却易产生收缩，内应力无法释放，因此板材产生变形很大，导致产品性能差，无法满足客户的需求和二次加工。
 
 技术问题
为了解决上述技术问题，本发明的目的是提供一种适用于生产塑料厚板的挤出成型设备。
 技术解决方案
为了实现上述发明的目的，本发明采用如下技术方案：一种厚板挤出成型设备，包括挤出机、挤出模头、三辊成型机、设置在三辊成型机下游的整平装置和牵伸机，所述的整平装置包括沿厚板传送方向延伸的安装架、设置在所述的安装架上的至少一对压辊组，所述的一对压辊组包括：固定设置所述的安装架上的下辊组和沿传送方向可滑动的设置在安装架上的上辊组，所述的上辊组与下辊组之间还设置有用于调整上辊组与下辊组之间的间隙的升降机构，所述的上辊组和下辊组分别包括多个平行设置的回火辊，所述的回火辊内通有热水。
本申请进一步的方案是：所述的整平装置包括两对所述的压辊组，它们是：位于上游的第一压辊组和位于第一压辊组下游的第二压辊组，第一压辊组包括：第一上辊组和第一下辊组，第二压辊组包括第二上辊组和第二下辊组，其中第一压辊组的表面温度大于第二压辊组的表面温度。
本申请进一步的方案是：所述的第一压辊组的表面温度为70~60℃，所述的第二压辊组的表面温度为60~50℃。
本申请进一步的方案是：位于同一个上辊组或下辊组中的多个回火辊的内腔相互联通，所述的整平装置包括多个分别与各辊组的回火辊相连的独立温控系统。
本申请进一步的方案是：各所述的上辊组/下辊组分别具有驱动该组回火辊转动的驱动电机，各回火辊与三辊成型机的线速度同步。
本申请进一步的方案是：位于同一对压辊组中的上辊组中的多个回火辊与下辊组中的多个回火辊沿着传送方向交错分布。或者，位于同一对压辊组中的上辊组中的多个回火辊与下辊组中的多个回火辊沿着传送方向对齐。
本申请进一步的方案是：所述的压辊组还包括用于调节上辊组与下辊组在传送方向上的相对位置的水平移动机构。
本申请进一步的方案是：所述的压辊组还包括用于调节上辊组与下辊组在垂直于传送方向上的相对位置的升降机构。
 有益效果
本发明的优点是：板材在三辊成型机中挤出后，能够在一定压力和温度下缓慢降温，从而实现对厚的板材压合整平，防止因急速冷却而导致变形，进而获得板面光泽度和平整度高的板材。
 附图说明
附图1为本发明的主视图；
附图2为本发明的整平装置的立体图；
附图3为压辊组的立体图；
附图4为压辊组的主视图；
附图5为附图3中A处的局部放大视图；
其中： 1、第一上辊组；2、上回火辊；3、第一上驱动电机；4、第一下辊组；5、下回火辊；6、第一下驱动电机；7、第二上辊组；8、第二上驱动电机；9、第二下辊组；10、第二下驱动电机；11、安装架；12、移动架；13、升降机构；14、水平移动机构；20、三辊成型机；21、上辊；22、中辊；23、下辊；24、板材；25、温控系统。
 本发明的实施方式
为详细说明发明的技术内容、构造特征、所达成目的及优点，下面将结合实施例予以详细说明。
附图1、2所示为一种厚板挤出成型设备，包括挤出机（图中未显示）、挤出模头（图中未显示）、三辊成型机20、设置在三辊成型机20下游的整平装置和牵伸机（图中未显示），图1中的箭头方向为厚板的传送方向。融融态的物料通过模头挤出，挤出后的材料随即进入三辊成型机20。参见附图5，三辊成型机20包括自上游向下游依次设置的下辊23、中辊22和上辊21，挤出模头的出料口位于中辊22与下辊23之间，板材挤出后，从中辊22与下辊23之间进入三辊成型机20，绕过中辊22，再从上辊21与中辊22之间穿出，进入整平装置。板材在整平装置内经过压整、加热后去除内应力，并初步定型后，在通过传送辊，进行自然冷却。然后再对板材进行分切，分切后的板材再通过输送单元输送到自动堆料台进行堆垛。
参见附图3~5所示，整平装置包括沿厚板传送方向延伸的安装架11、上下对应设置的第一上辊组1和第一下辊组4以及上下对应设置的第二上辊组7和第二下辊组9，所述的第一上辊组1包括多个上回火辊2以及驱动这些上回火辊2转动的第一上驱动电机3；所述的第一下辊组4包括多个下回火辊5以及驱动这些下回火辊5转动的第一下驱动电机6；所述的第二上辊组7包括多个上回火辊2以及驱动这些上回火辊2转动的第二上驱动电机8；所述的第二下辊组9包括多个下回火辊5以及驱动这些下回火辊5转动的第二下驱动电机10。
第一上辊组1上的任意相邻两个上回火辊2之间的间距与所述的第一下辊组4上的任意相邻两个下回火辊5之间的间距相等；第二上辊组7上的任意相邻两个上回火辊2之间的间距与所述的第二下辊组9上的任意相邻两个下回火辊5之间的间距相等。各个上回火辊2与各个下回火辊5的转速均相同，并与三辊成型机的线速度同步。各辊组中的多个回火辊的同侧端部均固定设置有过渡链轮，各驱动电机的输出端分别设置有主动链轮，主动链轮与各个过渡链轮之间通过链条传动连接。
其中，各上辊组和下辊组分别包括多个平行设置的回火辊，每个辊组中的多个回火辊之间通过金属软管串联，回火辊内部通有热水。在整平装置的下方还包括多个相互独立的温控系统25，各个辊组都可以通过其各自的温控系统25自由调节温度，以实现板材的阶梯化降温。以PP厚板的生产为例，第一压辊组中的上回火辊2和下回火辊5的表面温度为70~60℃为宜，第二压辊组的上回火辊2和下回火辊5表面温度为60~50℃为宜。
所述的压辊组还包括用于调节上辊组与下辊组在传送方向上的相对位置的水平移动机构14，通过调节上辊组的位置，可使得多个上回火辊与下回火辊沿着传送方向交错分布，或者，多个上回火辊与多个下回火辊沿着传送方向对齐。所述的水平移动机构14采用丝杆螺母结构，实现通过转动丝杆带动上辊组的辊架或下辊组的辊架沿传送方向相对移动，从而调节上辊组与下辊组之间对齐或者相互错开。
所述的第一下辊组和所述的第二下辊组固定安装在安装架11上，所述的第一上辊组和所述的第二上辊组分别通过升降机构13安装在一个移动架12上，本实施例中，第一下辊组的四角处分别设置有一个升降机构13，该升降机构采用丝杆螺母结构实现第一上辊组与第一下辊组之间距离的精确调整，以满足不同厚度板材的加工需求，并保证上回火辊2和下回火辊5压紧在板材的上表面和下表面，起到加压整平的作用。
升降机构13和水平移动机构14的具体结构可以根据实际情况做出多种设计方案，这属于本领域技术人员常用手段，因此本申请不再赘述。
 序列表自由内容
综上，本发明在三辊成型机的下游设置整平装置，通过整平装置对厚板材进行阶梯式降温，并通过多个上回火辊和多个下回火辊在上下方向上对板材进行压合整平，防止从三辊成型机中出来的板材急速冷却变形，从而保持厚板的板面光泽度和平整度，有效提高生产速度和产品质量，适于在厚板生产中推广应用。

Claims (9)

  1. 一种厚板挤出成型设备，其特征在于：包括挤出机、挤出模头、三辊成型机、设置在三辊成型机下游的整平装置和牵伸机，所述的整平装置包括沿厚板传送方向延伸的安装架、设置在所述的安装架上的至少一对压辊组，所述的一对压辊组包括：固定设置所述的安装架上的下辊组和沿传送方向可滑动的设置在安装架上的上辊组，所述的上辊组与下辊组之间还设置有用于调整上辊组与下辊组之间的间隙的升降机构，所述的上辊组和下辊组分别包括多个平行设置的回火辊，所述的回火辊内通有热水。
  2. 根据权利要求1所述的厚板挤出成型设备，其特征在于：所述的整平装置包括两对所述的压辊组，它们是：位于上游的第一压辊组和位于第一压辊组下游的第二压辊组，第一压辊组包括：第一上辊组和第一下辊组，第二压辊组包括第二上辊组和第二下辊组，其中第一压辊组的表面温度大于第二压辊组的表面温度。
  3. 根据权利要求2所述的厚板挤出成型设备，其特征在于：所述的第一压辊组的表面温度为70~60℃，所述的第二压辊组的表面温度为60~50℃。
  4. 根据权利要求1所述的厚板挤出成型设备，其特征在于：位于同一个上辊组或下辊组中的多个回火辊的内腔相互联通，所述的整平装置包括多个分别与各辊组的回火辊相连的独立温控系统。
  5. 根据权利要求1所述的厚板挤出成型设备，其特征在于：各所述的上辊组/下辊组分别具有驱动该组回火辊转动的驱动电机，各回火辊与三辊成型机的线速度同步。
  6. 根据权利要求1所述的厚板挤出成型设备，其特征在于：位于同一对压辊组中的上辊组中的多个回火辊与下辊组中的多个回火辊沿着传送方向交错分布。
  7. 根据权利要求1所述的厚板挤出成型设备，其特征在于：位于同一对压辊组中的上辊组中的多个回火辊与下辊组中的多个回火辊沿着传送方向对齐。
  8. 根据权利要求1所述的厚板挤出成型设备，其特征在于：所述的压辊组还包括用于调节上辊组与下辊组在传送方向上的相对位置的水平移动机构。
  9. 根据权利要求1所述的厚板挤出成型设备，其特征在于：所述的压辊组还包括用于调节上辊组与下辊组在垂直于传送方向上的相对位置的升降机构。
     
PCT/CN2018/078298 2017-05-19 2018-03-07 厚板挤出成型设备 WO2018210036A1 (zh)

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CN110112350B (zh) * 2019-05-20 2021-09-21 深圳市星源材质科技股份有限公司 隔膜及其制造方法以及电池
CN113199799B (zh) * 2021-05-20 2023-06-16 重庆镪正科技有限公司 一种碳滑板的碳条成型压嘴机构及成型方法
CN114506063A (zh) * 2022-01-26 2022-05-17 苏州金纬片板膜智能装备有限公司 一种回火整平装置

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