PVC (polyvinyl chloride) and ASA (acrylonitrile styrene acrylate) hard sheet production line

Abstract

The utility model relates to a PVC (Polyvinyl Chloride) and ASA (Acrylonitrile Styrene Acrylate) hard sheet production line which comprises a plasticizing device, a distributor, a forming mold, a three-roller calender, a cooling device and a two-station overturning winding machine, the plasticizing device comprises a mounting frame, a first plasticizing mechanism and a second plasticizing mechanism, the first plasticizing mechanism and the second plasticizing mechanism are fixedly connected to the mounting frame, the first plasticizing mechanism comprises a first spiral feeding machine and a first machine barrel, the second plasticizing mechanism comprises a second spiral feeding machine and a second machine barrel, and a second screw is arranged in the second machine barrel; the output end of the first machine barrel and the output end of the second machine barrel are connected with metering pumps; the distributor is provided with a first material inlet and a second material inlet; the input end of the forming mold is communicated with the discharge hole of the distributor; the three-roller calender is arranged at the output end of the forming mold; the cooling device comprises a rack, a plurality of cooling conveying rollers and a cooling bracket, and edge cutters are rotationally connected to the two sides, close to an output port of the rack, of the rack correspondingly. According to the production line, PVC + ASA hard sheets can be produced, the requirements of the product in actual production and use are met, and the market vacancy is filled.

Description

Technical Field

[0001] The utility model relates to the technical field of PVC hard sheet production, and more specifically to a PVC+ASA hard sheet production line. Background Art

[0002] Hard sheet, also known as film, is a sheet material used for blister packaging. ASA is added to PVC hard sheet during its preparation to toughen it and improve its weather resistance. However, the existing PVC hard sheet is prepared by fusing PVC and ASA, and then extruding, drawing and cooling them into pellets. When it needs to be made into sheets, workers plasticize the pellets through an extruder and then extrude them into sheets through a mold, which is labor-intensive for workers. Utility Model Content

[0003] In view of this, the utility model provides a PVC+ASA hard film production line to solve the problem that the film produced by the PVC+ASA hard film production line in the prior art has poor performance and an uneven surface.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] PVC+ASA rigid film production line, including:

[0006] A plasticizing device, the plasticizing device is arranged on one side of the screw feeder, and comprises a mounting frame, a first plasticizing mechanism fixedly connected to the mounting frame, and a second plasticizing mechanism, wherein: the first plasticizing mechanism comprises a first screw feeder and a first barrel for stirring PVC raw materials, the first screw feeder is connected to the input end of the first barrel, and the first barrel is provided with a first screw for conveying, compacting, melting and stirring the material; the second plasticizing mechanism comprises a second screw feeder and a second barrel for stirring the ASA raw materials, the second screw feeder is connected to the input end of the second barrel, and the second barrel is provided with a second screw for conveying, compacting, melting and stirring the material; the output end of the first barrel and the output end of the second barrel are both connected to a metering pump;

[0007] A distributor, wherein the distributor is provided with a first feed inlet and a second feed inlet, and the output ends of the two metering pumps are respectively connected to the first feed inlet and the second feed inlet, so as to mix the melted PVC raw material and the ASA raw material in equal proportions;

[0008] A forming mold, the input end of which is connected to the discharge port of the distributor, for forming PVC+ASA hard sheets;

[0009] A three-roll calender, which is located at the output end of the forming mold and is used to trim and calender the surface roughness of the PVC+ASA hard sheet;

[0010] A cooling device is arranged at the outlet end of the three-roll calender and is used to cool the PVC+ASA hard sheet; the cooling device comprises a frame, a plurality of cooling conveying rollers, a cooling bracket fixedly connected to the frame, a plurality of cooling conveying rollers rotatably connected to the frame, and trimming knives for cutting off the waste edges of the hard sheet are rotatably connected to both sides of the frame near its outlet.

[0011] Two-station flip winder is used to wind PVC+ASA rigid sheets.

[0012] Preferably, a screen-changing filter is provided between the parallel twin-screw extruder and the metering pump to filter the plasticized material formed by the parallel twin-screw extruder.

[0013] Preferably, the cooling device includes a cooling pipe also installed on the cooling bracket, and an air inlet pipe, the air inlet pipe is connected to the cooling pipe, and the air inlet pipe is used to introduce external low-temperature gas into the cooling pipe to cool the cooling bracket.

[0014] Preferably, the PVC+ASA hard sheet production line further comprises a traction machine, and the traction machine is arranged at the output end of the cooling device.

[0015] It can be seen from the above technical solution that the beneficial effects of the utility model are:

[0016] The PVC raw material and the ASA raw material are respectively sent to the first hopper and the second hopper by a spiral feeder, and the materials are transported, compacted, melted, and stirred by a plasticizing device specially designed for the PVC material and the ASA material, and then enter the mold for forming after being metered and stabilized by a metering pump. After coming out of the mold, they are cooled and formed by three rollers, and then cooled by a cooling bracket, and the cutter is used to cut the waste edge, and the traction machine is used for traction, and the winder is wound according to the product specifications to finally obtain the desired product. The product is automatically completed from extrusion molding to finished product processing and then to collection, with high production efficiency and very little manual labor. This application can produce PVC+ASA hard sheets, meet the requirements of the product in actual production and use, and fill the gap in the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] In the attached picture:

[0019] Figure 1 This is one of the overall structural schematic diagrams of the PVC+ASA hard film production line provided by the embodiment of the utility model.

[0020] Figure 2 This is the second overall structural schematic diagram of the PVC+ASA hard sheet production line provided by the embodiment of the utility model.

[0021] Figure 3 This is a schematic diagram of the connection between the cooling pipe and the air inlet pipe in the PVC+ASA hard sheet production line provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-3 As shown in, it is an embodiment provided by the present application, and the PVC+ASA hard sheet production line in this embodiment is used for the production of PVC+ASA hard sheets. The PVC+ASA hard sheet production line in this embodiment includes: a plasticizing device, a dispenser, a forming mold, a three-roll calender, a cooling device, and a two-station flip winder. The components of the PVC+ASA hard sheet production line are described below, as follows:

[0024] The plasticizing device comprises a mounting frame 100, a first plasticizing mechanism 1 fixedly connected to the mounting frame 100, and a second plasticizing mechanism 2, wherein:

[0025] The first plasticizing mechanism 1 includes a first screw feeder 101 and a first barrel 10 for stirring the PVC raw material. The output end of the first screw feeder 101 is connected to the input end of the first barrel 10. The first barrel 10 is provided with a first screw for conveying, compacting, melting, stirring and pressurizing the plastic.

[0026] The second plasticizing mechanism 2 includes a second screw feeder 102 and a second barrel 20 for stirring the ASA raw material. The output end of the second screw feeder 102 is connected to the input end of the second barrel 20. The second barrel 20 is provided with a second screw for conveying, compacting, melting, stirring and pressurizing the plastic.

[0027] The output end of the first barrel 10 and the output end of the second barrel 20 are both connected to a metering pump;

[0028] The distributor 11 is provided with a first feed inlet and a second feed inlet, and the output ends of the two metering pumps are respectively connected to the first feed inlet and the second feed inlet, so as to mix the melted PVC raw material and the ASA raw material in equal proportions;

[0029] A forming mold 3, wherein the input end of the forming mold 3 is connected to the discharge port of the distributor 11, and is used for forming PVC+ASA hard sheets;

[0030] A three-roll calender 4, which is arranged at the outlet end of the forming mold 3 and is used to trim and calender the surface roughness of the PVC+ASA hard sheet;

[0031] The cooling device 5 is arranged at the output end of the three-roll calender 4 to cool the PVC+ASA hard sheet; the cooling device 5 includes a frame, a plurality of cooling conveying rollers 53, and a cooling bracket 52 fixedly connected to the frame, a plurality of cooling conveying rollers 53 are rotatably connected to the frame, and the frame is rotatably connected to both sides of its output port with trimming knives 51 for cutting off the waste edges of the hard sheet.

[0032] The two-station turnover winder 7 is used to wind the PVC+ASA hard sheet.

[0033] Preferably, the cooling device 5 includes a cooling pipe 31 also mounted on the cooling bracket, and an air inlet pipe 32 , the air inlet pipe 32 is connected to the cooling pipe 31 , and the air inlet pipe 32 is used to introduce external low-temperature gas into the cooling pipe 31 to cool the cooling bracket 52 .

[0034] Preferably, the PVC+ASA hard sheet production line further comprises a traction machine, which is arranged at the output end of the cooling device 5 .

[0035] The PVC raw material and the ASA raw material are respectively sent to the first hopper 101 and the second hopper 102 by a spiral feeder, and the materials are conveyed, compacted, melted and stirred by a plasticizing device specially designed for the PVC material and the ASA material. After being metered and stabilised by a metering pump, the materials enter the mould for forming. After coming out of the mould, they are cooled and formed by three rollers, and then cooled by a cooling bracket. The cutter cuts the waste edges, the traction machine tractions, and the winder winds according to the product specifications to finally obtain the required product. The product is automatically completed from extrusion molding to finished product processing to collection, with high production efficiency and minimal use of manpower.

[0036] This application can produce PVC+ASA hard sheets, meet the requirements of the actual production and use of the product, and fill the gap in the market.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features disclosed herein.

Claims

1. A PVC+ASA hard sheet production line, characterized in that: include: A plasticizing device, the plasticizing device is arranged on one side of the screw feeder, and comprises a mounting frame, a first plasticizing mechanism fixedly connected to the mounting frame, and a second plasticizing mechanism, wherein: the first plasticizing mechanism comprises a first screw feeder and a first barrel for stirring PVC raw materials, the first screw feeder is connected to the input end of the first barrel, and the first barrel is provided with a first screw for conveying, compacting, melting and stirring the material; the second plasticizing mechanism comprises a second screw feeder and a second barrel for stirring the ASA raw materials, the second screw feeder is connected to the input end of the second barrel, and the second barrel is provided with a second screw for conveying, compacting, melting and stirring the material; the output end of the first barrel and the output end of the second barrel are both connected to a metering pump; A distributor, wherein the distributor is provided with a first feed inlet and a second feed inlet, and the output ends of the two metering pumps are respectively connected to the first feed inlet and the second feed inlet, so as to mix the melted PVC raw material and the ASA raw material in equal proportions; A forming mold, the input end of which is connected to the discharge port of the distributor, for forming PVC+ASA hard sheets; A three-roll calender, which is located at the output end of the forming mold and is used to trim and calender the surface roughness of the PVC+ASA hard sheet; A cooling device is provided at the outlet of the three-roll calender to cool the PVC+ASA hard sheet; the cooling device comprises a frame, a plurality of cooling conveying rollers, a cooling bracket fixedly connected to the frame, a plurality of cooling conveying rollers rotatably connected to the frame, and trimming knives for cutting off the edges of the hard sheet waste are rotatably connected to both sides of the frame near the outlet; Two-station flip winder is used to wind PVC+ASA rigid sheets.

2. The PVC+ASA hard sheet production line according to claim 1, characterized in that: The cooling device includes a cooling pipe also installed on the cooling bracket, and an air inlet pipe, the air inlet pipe is connected to the cooling pipe, and the air inlet pipe is used to introduce external low-temperature gas into the cooling pipe to cool the cooling bracket.

3. The PVC+ASA hard sheet production line according to claim 1, characterized in that: The PVC+ASA hard sheet production line also includes a traction machine, which is arranged at the output end of the cooling device.

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