WO2023023986A1 - 一种塑料造粒产线的风冷装置 - Google Patents

一种塑料造粒产线的风冷装置 Download PDF

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Publication number
WO2023023986A1
WO2023023986A1 PCT/CN2021/114590 CN2021114590W WO2023023986A1 WO 2023023986 A1 WO2023023986 A1 WO 2023023986A1 CN 2021114590 W CN2021114590 W CN 2021114590W WO 2023023986 A1 WO2023023986 A1 WO 2023023986A1
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Prior art keywords
air
conveying
production line
cooling device
plastic granulation
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PCT/CN2021/114590
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English (en)
French (fr)
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章顺法
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台州市万铭新材料科技有限公司
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Priority to PCT/CN2021/114590 priority Critical patent/WO2023023986A1/zh
Publication of WO2023023986A1 publication Critical patent/WO2023023986A1/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
    • B29B9/00—Making granules
    • B29B9/02—Making granules by dividing preformed material
    • B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
    • 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
    • B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00

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  • This application relates to the field of plastic granulation processing devices, more specifically, it relates to an air cooling device for a plastic granulation production line.
  • the strips extruded by the extruder need to be cooled by water cooling first, then transported to the air cooling device for air drying and cooling, and finally the strips are cut into plastic pellets on the plastic cutting machine .
  • the air outlet of the fan is set directly above the material strip, and blows the air on the surface of the material strip from directly above the material strip, so as to cool the material strip. Air dry and cool.
  • the above-mentioned device has the following defects: after the fan blows the surface of the material strip from top to bottom, a large amount of moisture will still adhere to the surface of the material strip, and the drying effect of the material strip is not good, which needs to be improved
  • the application provides an air cooling device for a plastic granulation production line.
  • An air cooling device for a plastic granulation production line provided by the application adopts the following technical scheme:
  • An air-cooling device for a plastic granulation production line comprising a conveying seat, the upper end of the conveying seat is provided with a feed end and a discharge end, and the feed end and the discharge end are respectively arranged in one-to-one correspondence Both ends of the conveying seat in the length direction, the conveying seat is provided with a plurality of conveying rollers along the length direction, and the conveying rollers are used for carrying the material strip; the conveying seat is provided with a fixed frame, and the height of the fixed frame is high At the height of the conveying roller, a fan is provided on the fixed frame, and the air outlet of the fan is facing the feeding end and is arranged obliquely downward.
  • the material strip moves from the feed end to the discharge end, and the air outlet of the fan faces the feed end and is set obliquely downward, so that the moisture on the material strip can move toward the feed end or toward the Drop down, reduce the moisture on the strips delivered to the discharge end, and improve the drying efficiency of the strips.
  • multiple fixing frames are provided along the length direction of the conveying seat, and multiple fans are also provided corresponding to the fixing frames.
  • the number of the fans is the same as the number of the conveying rollers, the positions of a plurality of the fans are set corresponding to the plurality of conveying rollers, and the air outlets of each of the fans are directed towards the corresponding conveying rollers. roll set.
  • the material strip since the material strip needs to be water-cooled and solidified before being air-cooled, the material strip as a whole is still in an incompletely solidified state and is more likely to be deformed.
  • the fan since there is no support point for the material strip between adjacent conveying rollers to provide support, if the fan continuously blows air to the material strip between adjacent conveying rollers, it may make the material strip Large deformation occurs, which affects the quality of the subsequent strips; therefore, setting the air outlet of the fan to send air to the conveyor roller can make most of the force of the wind act on the conveyor roller, reducing the deformation of the strip and improving the quality of the strip. quality.
  • the feed end is communicated with a guide surface, and the guide surface is arranged obliquely downward toward a direction away from the discharge end.
  • the diversion surface is used to connect the water cooling device of the production line, and the moisture on the material strip at the feed end can flow back to the water cooling device through the diversion surface, improving the utilization rate of water resources.
  • the conveying seat is provided with a diversion groove, and the diversion groove runs through the two side walls of the conveying seat along the length direction of the conveying seat, and the feed end and the discharge end are connected to the diversion groove
  • the groove bottom of the diversion groove is set, and the groove bottom of the diversion groove communicates with the diversion surface.
  • the water dripping from the material strip can be collected in the diversion groove, and then flow back to the water cooling device of the production line along the diversion surface, so as to improve the utilization rate of water resources.
  • the groove bottom of the diversion groove is arranged obliquely downward from the discharge end to the feed end.
  • the side wall of the guide groove is provided with exhaust holes.
  • each of the conveying rollers is provided with a plurality of positioning ring grooves along the axis direction, and the feeding strips are embedded in the positioning ring grooves.
  • the material strips are embedded in the positioning ring groove, which can reduce the stacking between the material strips during the conveying process, increase the contact area between the air and the material strips when the fan blows air, and improve the drying efficiency of the material strips.
  • each of the conveying rollers is provided with a rotary joint, the input end of the rotary joint is connected to an air pump, and each of the conveying rollers is also provided with an air suction chamber, and the air suction chamber is connected to the air pump.
  • the output end of the rotary joint is connected; the groove bottom of the positioning ring groove is distributed along the circumferential direction with a plurality of air extraction holes, and the air extraction holes are connected to the air extraction cavity.
  • the air extraction hole is set, and the air extraction chamber is pumped by the air pump.
  • the air extraction chamber has a negative pressure, and the material strip is adsorbed on the air suction hole, and the material strip can be more stably embedded in the positioning ring groove.
  • the possibility of stacking of strips is reduced, and the air extraction holes can also remove part of the moisture on the strips, reduce the backflow of air in the diversion groove, and improve the drying efficiency of the strips.
  • the present application includes at least one of the following beneficial technical effects:
  • the suction chamber is pumped by the air pump, and there is a negative pressure in the suction chamber, and the material strip is adsorbed on the suction hole, and the material strip can be more stably embedded in the positioning ring groove, reducing The possibility of stacking strips, and the air hole can also remove part of the moisture on the strips, improving the drying efficiency of the strips.
  • FIG. 1 is a schematic diagram of the overall structure of this embodiment.
  • Fig. 2 is a cross-sectional view of the conveying roller of this embodiment.
  • the embodiment of the present application discloses an air cooling device for a plastic granulation production line.
  • Fig. 1 it includes a conveying seat 1, the conveying seat 1 is provided with a feed end 2 and a discharge end 3 along the length direction, the upper end surface of the conveying seat 1 is provided with a plurality of conveying rollers 4 along the length direction, and the conveying rollers 4 are used to carry Strips.
  • the upper end face of the conveying seat 1 is also fixed with a plurality of fixed mounts 5 along the length direction, the quantity of the fixed mounts 5 is consistent with the quantity of the conveying rollers 4, the position of the fixed mounts 5 is set corresponding to the conveying rollers 4, and the fixed mounts 5 are arranged on the conveying seat.
  • the height on 1 is higher than the height on conveying roller 4 on conveying seat 1.
  • Each fixed frame 5 is fixed with a fan 6 , the air outlet of the fan 6 is set towards the corresponding conveying roller 4 , and the air outlet of the fan 6 is set towards the feed end 2 and is inclined downward.
  • the feed end 2 is used to communicate with the water cooling device of the production line, and the material strip is transported from the water cooling device of the production line to the feed end 2, and the material strip is placed on the top of the conveying roller 4, and along the The conveying roller 4 is conveyed from the feed end 2 to the discharge end 3, and the discharge end 3 is used to communicate with the cutting device of the production line.
  • the blower 6 is used to blow away the moisture on the material strip, so that the moisture on the material strip moves toward the direction of the feed end 2 or drops downward, so as to improve the drying efficiency of the material strip.
  • each conveying roller 4 is provided with an air suction chamber 7 along the axial direction, and one end of the conveying roller 4 is connected with a rotary joint 8, and the air suction chamber 7 is connected to the output end of the rotary joint 8;
  • the input end of the exhaust pipe 9 is connected with an air extraction pipe 9, and the other end of the air extraction pipe 9 is connected with an air extraction pump 10, and the air extraction pump 10 is used for extracting air from the air extraction chamber 7.
  • Each conveying roller 4 is provided with a plurality of positioning ring grooves 11 along the axial direction, the positioning ring grooves 11 are coaxially arranged with the conveying roller 4, and the groove bottom of each positioning ring groove 11 is circumferentially distributed with a plurality of air extraction holes 12, The air extraction hole 12 communicates with the air extraction cavity 7 .
  • the suction pump 10 pumps air to the suction chamber 7, so that the suction chamber 7 is in a negative pressure state, the strip is adsorbed on the suction hole 12, and the strip is embedded in the positioning ring groove 11, Reduce the mutual stacking of strips, increase the contact area between air and strips, and improve the drying efficiency of strips.
  • the upper end face of conveying seat 1 is provided with guide groove 13 along the length direction, and guide groove 13 runs through two end faces of conveying seat 1 along the length direction of conveying seat 1, and the groove bottom height of guide groove 13 is determined by
  • the discharge end 3 to the feed end 2 is gradually lowered.
  • the side of the guide groove 13 close to the feed end 2 is connected with a guide surface 14 , and the guide surface 14 is arranged obliquely downward from the feed end 2 to the direction away from the discharge end 3 .
  • the water dripping from the material strip can be collected in the diversion groove 13, and then flow back to the water cooling device of the production line along the diversion surface 14, so as to improve the utilization rate of water resources .
  • a plurality of exhaust holes 15 are opened on both side walls of the diversion groove 13 , and the exhaust holes 15 on each side wall are arranged along the length direction of the diversion groove 13 .
  • the working principle of this embodiment is: during the working process of the actual production line, the feed end 2 is used to communicate with the water cooling device of the production line, the material strip is transported from the water cooling device of the production line to the feed end 2, and the material strip is conveyed along the The roll 4 is conveyed from the feed end 2 to the discharge end 3 .
  • a plurality of material strips are embedded in the positioning ring groove 11 on the conveying roller 4 one by one, and the fan 6 blows towards the material strips, air-cools and dries the material strips, and blows the moisture on the material strips to the guide.
  • water flows back from the diversion groove 13 to the diversion surface 14, and then flows back to the water cooling device of the production line through the diversion surface 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

本申请涉及了一种塑料造粒产线的风冷装置，包括输送座，输送座上端面设有进料端和出料端，进料端和出料端分别一一对应分别设置于输送座长度方向的两端，输送座上沿长度方向设有多个输送辊，输送辊用于料条的承载；输送座设有固定架，固定架的高度高于输送辊，固定架上设有风机，风机的出风口朝向进料端并且倾斜向下设置。实际塑料造粒生产过程中，料条从进料端至出料端移动，风机的出风口朝向进料端并且倾斜向下设置，可以使料条上的水分朝向进料端移动或者向下滴落，减少输送至出料端的料条上的水分，提高料条的干燥效率。

Description

一种塑料造粒产线的风冷装置 技术领域
本申请涉及塑料造粒加工装置的领域，更具体地说，它涉及一种塑料造粒产线的风冷装置。
背景技术
传统的塑料造粒的生产线上，由挤出机挤出的料条，需要先通过水冷进行冷却，然后输送至风冷装置上进行风干冷却，最后在塑料切割机上将料条切割成塑料造粒。
传统的塑料造粒产线上的风冷装置，风机的出风口设置于料条的正上方，从料条的正上方，从上往下对料条表面进行吹风，以此来对料条进行风干冷却。
但上述装置存在以下缺陷：风机从上到下对料条表面进行吹风后，料条表面仍然会附着有大量水分，料条的干燥效果不好，有待改善
实用新型内容
为了提高料条的干燥效率，本申请提供一种塑料造粒产线的风冷装置。
本申请提供的一种塑料造粒产线的风冷装置，采用如下的技术方案：
一种塑料造粒产线的风冷装置，包括输送座，所述输送座上端面设有进料端和出料端，所述进料端和所述出料端分别一一对应分别设置于输送座长度方向的两端，所述输送座上沿长度方向设有多个输送辊，所述输送辊用于料条的承载；所述输送座设有固定架，所述固定架的高度高于所述输送辊的高度，所述固定架上设有风机，所述风机的出风口朝向进料端并且倾斜向下设置。
通过上述技术方案，实际生产过程中，料条从进料端至出料端移动，风机的出风口朝向进料端并且倾斜向下设置，可以使料条上的水分朝向进料端移动或者向下滴落，减少输送至出料端的料条上的水分，提高料条的干燥效率。
可选的，所述固定架沿所述输送座的长度方向设有多个，所述风机对应于所述固定架也设有多个。
通过上述技术方案，多个风机对料条进行干燥，可以提高料条的干燥效率。
可选的，所述风机的数量和所述输送辊的数量相同，多个所述风机的位置一一对应于多根所述输送辊设置，每个所述风机的出风口均朝向对应的输送辊设置。
通过上述技术方案，由于料条在进行风冷之前，需要进行水冷凝固，料条整体仍然处于未完全凝固的状态，较易发生形变。在进行风冷的过程中，由于相邻输送辊之间的料条部分没有支撑点提供支撑力，如果风机对着相邻输送辊之间的料条部分进行持续送风，可能会使料条发生较大的形变，影响后续料条的质量；因此，设置风机的出风口朝向输送辊进行送风，可以使风的作用力多数作用于输送辊上，减少料条的形变，提高料条的质量。
可选的，所述进料端连通有导流面，所述导流面朝向远离出料端的方向呈倾斜向下设置。
通过上述技术方案，实际产线工作过程中，导流面用于连通产线的水冷装置，进料端料条上的水分可以通过导流面回流至水冷装置，提高水资 源的利用率。
可选的，所述输送座开有导流槽，所述导流槽沿输送座的长度方向贯穿于输送座的两个侧壁，所述进料端和所述出料端于导流槽的槽底设置，所述导流槽的槽底连通于所述导流面。
通过上述技术方案，可以将料条上滴落的水分收集在导流槽，然后再沿导流面流回产线的水冷装置，提高水资源的利用率。
可选的，所述导流槽的槽底由出料端至进料端方向呈倾斜向下设置。
通过上述技术方案，方便导流槽中的水沿着导流面流回产线的水冷装置中，提高水资源的利用率。
可选的，所述导流槽的侧壁设有排风孔。
通过上述技术方案，当导流槽中的空气存在回流时，空气会带着导流槽中的水汽重新附着于料条上，影响料条的干燥效率；设置排风孔，可以减少导流槽内空气的回流，提高料条的干燥效率。
可选的，每根所述输送辊沿轴线方向均开设有多个定位环槽，所述定位环槽供料条嵌入。
通过上述技术方案，料条嵌于定位环槽中，可以减少输送过程中料条之间的堆叠，提高风机送风时空气与料条的接触面积，提高料条的干燥效率。
可选的，每根所述输送辊上均设有旋转接头，所述旋转接头的输入端连通有抽气泵，每根所述输送辊上还设有抽气腔，所述抽气腔与所述旋转接头的输出端连通；所述定位环槽的槽底沿周向分布有多个抽气孔，所述抽气孔连通于所述抽气腔。
通过上述技术方案，设置抽气孔，通过气泵对抽气腔进行抽气，抽气腔内呈负压，料条被吸附于吸气孔上，料条可以更稳定的嵌于定位环槽中，减少料条的堆叠的可能性，且抽气孔还可以抽掉料条上的部分水分，并减少导流槽内空气的回流，提高料条的干燥效率。
综上所述，本申请包括以下至少一种有益技术效果：
(1)通过设置风机的出风口朝向进料端并且倾斜向下，可以使料条上的水分朝向进料端移动或者向下滴落，减少输送至出料端的料条上的水分，提高料条的干燥效率；
(2)通过设置风机的出风口朝向输送辊进行送风，可以使风的作用力多数作用于输送辊上，减少料条的形变，提高料条的质量；
(3)通过设置抽气孔，通过气泵对抽气腔进行抽气，抽气腔内呈负压，料条被吸附于吸气孔上，料条可以更稳定的嵌于定位环槽中，减少料条的堆叠的可能性，且抽气孔还可以抽掉料条上的部分水分，提高料条的干燥效率。
附图说明
图1为本实施例的整体结构示意图。
图2为本实施例的输送辊的剖视图。
附图标记：1、输送座；2、进料端；3、出料端；4、输送辊；5、固定架；6、风机；7、抽气腔；8、旋转接头；9、抽气管；10、抽气泵；11、定位环槽；12、抽气孔；13、导流槽；14、导流面；15、排风孔。
具体实施方式
以下结合附图1-2对本申请作进一步详细说明。
本申请实施例公开一种塑料造粒产线的风冷装置。
参照图1，包括输送座1，输送座1沿长度方向设置有进料端2和出料端3，输送座1的上端面沿长度方向设置有多根输送辊4，输送辊4用于承载料条。输送座1的上端面沿长度方向还固定有多个固定架5，固定架5的数量和输送辊4的数量一致，固定架5的位置对应于输送辊4设置，且固定架5在输送座1上的高度高于输送辊4在输送座1上的高度。每个固定架5上均固定有一个风机6，风机6的出风口朝向对应的输送辊4设置，且风机6的出风口朝向进料端2并且倾斜向下设置。
实际产线的工作过程中，进料端2用于与产线的水冷装置连通，料条从产线的水冷装置输送至进料端2，料条放置于输送辊4的上方，并沿着输送辊4由进料端2输送至出料端3，出料端3用于与产线的切料装置连通。风机6用于吹走料条上的水分，使料条上的水分朝进料端2方向移动或者向下滴落，以提高料条的干燥效率。
参照图1和图2，每根输送辊4沿轴线方向均开设有抽气腔7，输送辊4的一端连接有旋转接头8，抽气腔7连通于旋转接头8的输出端；旋转接头8的输入端连接有抽气管9，抽气管9的另外一端连接有抽气泵10，抽气泵10用于对抽气腔7进行抽气。
每个输送辊4上沿轴线方向均开设有多个定位环槽11，定位环槽11与输送辊4同轴设置，每个定位环槽11的槽底周向分布有多个抽气孔12，抽气孔12与抽气腔7连通。
实际料条输送过程中，抽气泵10对抽气腔7进行抽气，使得抽气腔7呈负压状态，料条被吸附于抽气孔12上，且料条嵌入于定位环槽11中， 减少料条之间的相互堆叠，增大空气与料条的接触面积，提高料条的干燥效率。
参照图1，输送座1的上端面沿长度方向设置有导流槽13，导流槽13沿输送座1的长度方向贯穿于输送座1的两个端面，导流槽13的槽底高度由出料端3至进料端2逐渐降低。导流槽13靠近进料端2的一侧连通有导流面14，导流面14由进料端2至远离出料端3的方向呈倾斜向下设置。
实际风机6对料条进行干燥的过程中，可以将料条上滴落的水分收集在导流槽13，然后再沿导流面14流回产线的水冷装置中，提高水资源的利用率。
参照图1和图2，导流槽13的两个侧壁上均开设有多个排风孔15，每个侧壁上的排风孔15均沿导流槽13的长度方向设置。
当导流槽13中的空气存在回流时，空气会带着导流槽13中的水汽重新附着于料条上，影响料条的干燥效率；设置排风孔15和抽气孔12，可以减少导流槽13内空气的回流，提高料条的干燥效率。
本实施例的工作原理是：实际产线的工作过程中，进料端2用于与产线的水冷装置连通，料条从产线的水冷装置输送至进料端2，料条沿着输送辊4由进料端2输送至出料端3。输送过程中，多根料条一一对应嵌入于输送辊4上的定位环槽11中，风机6朝向料条进行吹风，对料条进行风冷干燥，并将料条上的水分吹至导流槽13中，水由导流槽13回流至导流面14，再由导流面14流回产线的水冷装置中。
以上均为本申请的较佳实施例，并非依此限制本申请的保护范围，故：凡依本申请的结构、形状、原理所做的等效变化，均应涵盖于本申请的保 护范围之内。

Claims (9)

  1. 一种塑料造粒产线的风冷装置，其特征在于：包括输送座(1)，所述输送座(1)上端面设有进料端(2)和出料端(3)，所述进料端(2)和所述出料端(3)分别一一对应分别设置于输送座(1)长度方向的两端，所述输送座(1)上沿长度方向设有多个输送辊(4)，所述输送辊(4)用于支撑料条的下端面；所述输送座(1)设有固定架(5)，所述固定架(5)的高度高于所述输送辊(4)的高度，所述固定架(5)上设有风机(6)，所述风机(6)的出风口朝向进料端(2)并且倾斜向下设置。
  2. 根据权利要求1所述的一种塑料造粒产线的风冷装置，其特征在于：所述固定架(5)沿所述输送座(1)的长度方向设有多个，所述风机(6)对应于所述固定架(5)也设有多个。
  3. 根据权利要求2所述的一种塑料造粒产线的风冷装置，其特征在于：所述风机(6)的数量和所述输送辊(4)的数量相同，多个所述风机(6)的位置一一对应于多根所述输送辊(4)设置，每个所述风机(6)的出风口均朝向对应的输送辊(4)设置。
  4. 根据权利要求1所述的一种塑料造粒产线的风冷装置，其特征在于：所述进料端(2)连通有导流面(14)，所述导流面(14)朝向远离出料端(3)的方向呈倾斜向下设置。
  5. 根据权利要求4所述的一种塑料造粒产线的风冷装置，其特征在于：所述输送座(1)开有导流槽(13)，所述导流槽(13)沿输送座(1)的长度方向贯穿于输送座(1)的两个侧壁，所述导流槽(13)的槽底连通于所述导流面(14)。
  6. 根据权利要求5所述的一种塑料造粒产线的风冷装置，其特征在于： 所述导流槽(13)的槽底由出料端(3)至进料端(2)方向呈倾斜向下设置。
  7. 根据权利要求5所述的一种塑料造粒产线的风冷装置，其特征在于：所述导流槽(13)的侧壁设有排风孔(15)。
  8. 根据权利要求1所述的一种塑料造粒产线的风冷装置，其特征在于：每根所述输送辊(4)沿轴线方向均开设有多个定位环槽(11)，所述定位环槽(11)供料条嵌入。
  9. 根据权利要求8所述的一种塑料造粒产线的风冷装置，其特征在于：每根所述输送辊(4)上均设有旋转接头(8)，所述旋转接头(8)的输入端连通有抽气泵(10)，每根所述输送辊(4)上还设有抽气腔(7)，所述抽气腔(7)与所述旋转接头(8)的输出端连通；所述定位环槽(11)的槽底沿周向分布有多个抽气孔(12)，所述抽气孔(12)连通于所述抽气腔(7)。
PCT/CN2021/114590 2021-08-25 2021-08-25 一种塑料造粒产线的风冷装置 WO2023023986A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN105522008A (zh) * 2016-02-23 2016-04-27 中冶赛迪工程技术股份有限公司 一种高效风冷装置
CN206501334U (zh) * 2017-02-21 2017-09-19 十堰飞纳科科技有限公司 一种塑料挤出造粒机除湿装置
CN207630321U (zh) * 2017-12-06 2018-07-20 惠州市良化新材料有限公司 一种料条定位装置
CN211518144U (zh) * 2019-12-17 2020-09-18 汕头市富达塑料机械有限公司 一种挤出切粒生产线

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105522008A (zh) * 2016-02-23 2016-04-27 中冶赛迪工程技术股份有限公司 一种高效风冷装置
CN206501334U (zh) * 2017-02-21 2017-09-19 十堰飞纳科科技有限公司 一种塑料挤出造粒机除湿装置
CN207630321U (zh) * 2017-12-06 2018-07-20 惠州市良化新材料有限公司 一种料条定位装置
CN211518144U (zh) * 2019-12-17 2020-09-18 汕头市富达塑料机械有限公司 一种挤出切粒生产线

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