CN109927267B - EPS sheet production system - Google Patents
EPS sheet production system Download PDFInfo
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- CN109927267B CN109927267B CN201910262151.7A CN201910262151A CN109927267B CN 109927267 B CN109927267 B CN 109927267B CN 201910262151 A CN201910262151 A CN 201910262151A CN 109927267 B CN109927267 B CN 109927267B
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Abstract
The invention provides an EPS sheet production system, which comprises an extruder, a first feeding mechanism, a second feeding mechanism, a forming die, a blowing mechanism and a winding device, wherein the first feeding mechanism and the second feeding mechanism are respectively used for conveying PS granules and foaming agents to the extruder; the forming die is used for extruding EPS materials into EPS sheets in a conical sheet shape, the air blowing mechanism is used for cutting and unfolding the EPS sheets in the length direction after the EPS sheets are shaped into cylinders, and the winding device is used for winding the unfolded EPS sheets. The molding die can extrude the EPS material output from the extruder in a sheet form to form an EPS sheet.
Description
Technical Field
The invention relates to the technical field of EPS (expandable polystyrene) sheet production, in particular to an EPS sheet production system.
Background
When the general KT board production system is used for producing the KT board, PS particles are firstly foamed through an extruder and then extruded into a forming die to prepare a board core, then films (or stickers) are stuck on two sides of the board core, and then the KT board finished product is obtained after fixed-width trimming and fixed-length trimming. The process of foaming and forming the plate core by using PS particles can generate a large amount of waste gas, the waste gas can cause bad working environment after being emitted to a production workshop, and the physical and psychological health of workers is influenced. Therefore, there is a need for a production system capable of efficiently producing EPS sheets to provide EPS sheets.
Disclosure of Invention
In view of the above-described drawbacks of the prior art, an object of the present invention is to provide an EPS sheet production system capable of producing an EPS sheet with high production efficiency.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The EPS sheet production system comprises an extruder, a first feeding mechanism, a second feeding mechanism, a forming die, a blowing mechanism and a winding device, wherein the first feeding mechanism and the second feeding mechanism are respectively used for conveying PS granules and foaming agents to the extruder; the forming die is used for extruding EPS materials into EPS sheets in a conical sheet shape, the air blowing mechanism is used for cutting and unfolding the EPS sheets in the length direction after the EPS sheets are shaped into cylinders, and the winding device is used for winding the unfolded EPS sheets.
In the EPS sheet production system, the extruder is a screw extruder, a screw cylinder is connected with a hopper for throwing PS granules and an input port for inputting foaming agent, the screw cylinder is also provided with a plurality of heating components, and part of the heating components are arranged between the hopper and the input port.
In the EPS sheet production system, the first feeding mechanism comprises a storage box for storing PS granules and a feeding auger; the lower end of the feeding auger extends into the storage box, and the outlet at the upper end of the feeding auger is aligned with the opening at the upper end of the hopper; the second feeding mechanism comprises a case, a storage tank and a pump, wherein the storage tank is arranged in the case and used for storing foaming agent, and the pump is used for conveying the foaming agent; the second feeding mechanism feeds the input port through a feeding pipe.
In the EPS sheet production system, a filter is arranged at the outlet of the screw cylinder; the filter comprises a shell, a filter screen inserted in the shell and a cylinder for inserting the filter screen; through holes for EPS materials to pass through are formed in the front wall and the rear wall of the shell, and the filter screen is inserted between the two through holes.
In the EPS sheet production system, the forming die comprises a core sleeve fixedly connected with the filter shell, a cavity extending from front to back is arranged in the core sleeve, and the front end of the cavity is communicated with the through hole of the filter; a mold core is arranged in the cavity, and a flow passage with an annular cross section, which gradually becomes smaller from front to back, is enclosed between the wall surface of the cavity and the mold core; the rear side of the core sleeve is provided with a rear plug, a conical gap is arranged between the front end of the rear plug and the rear end of the core sleeve, and the gap is communicated with the flow channel; and a blowing mechanism for cooling the EPS sheets.
In the EPS sheet production system, the blowing mechanism comprises a wind ring sleeved at the rear end of the core sleeve and a first blower for blowing air to the wind ring; the air ring is characterized in that a plurality of air inlets are uniformly formed in the circumferential surface of the air ring along the circumferential direction, annular air outlets are formed in the rear side surface of the air ring, and the first air blower supplies air to all the air inlets simultaneously through the air pipes.
In the EPS sheet production system, the air blowing mechanism comprises a frame, a second air blower and an electric cabinet which are arranged on the frame, a cylindrical guide cylinder fixed at the top of the electric cabinet, and a cutter arranged at the rear side of the guide cylinder; the front end of the guide cylinder is opposite to the outlet of the forming die, and the guide cylinder is provided with an air inlet pipe penetrating through the front end and the rear end and a plurality of air return holes communicated with the front end and the rear end; the second air blower is connected with the rear end of the air inlet pipe through an air pipe; the cutter is used for cutting the cylindrical EPS sheet from the lower side; the second blower is electrically connected with the electric control box and is controlled by the electric control box to work.
In the EPS sheet production system, a disc part is arranged in front of the guide cylinder, and the diameter of the disc part is equal to that of the guide cylinder; the disc part comprises a rear wall and a peripheral wall, the air inlet pipe is arranged on the rear wall of the disc part in a penetrating way, and a plurality of air return holes are formed in the rear wall of the disc part.
In the EPS sheet production system, an atomization device is arranged in the electric cabinet and used for conveying water mist to the front of the guide cylinder through a conveying pipe, and the conveying pipe is arranged in an air return hole of the guide cylinder in a penetrating mode.
In the EPS sheet production system, an atomizer for spraying water mist to the EPS sheet and a blowing device for blowing the EPS sheet are arranged in front of the winding device.
The beneficial effects are that:
The invention provides an EPS sheet production system, which is characterized in that PS granules and a foaming agent are mixed and foamed through an extruder and extruded into an EPS sheet in a conical sheet shape from a forming die, the EPS sheet is shaped by a blowing mechanism to form a cylindrical sheet, and the sheet is cut and unfolded in the length direction in the blowing mechanism and then is pulled and rolled by a rolling device, so that the whole production process is continuous, the degree of automation is high, and the production efficiency is high.
Drawings
Fig. 1 is a schematic structural diagram of an EPS sheet production system according to the invention.
Fig. 2 is a top view of an extruder in the EPS sheet production system provided by the invention.
Fig. 3 is a schematic structural diagram of a first feeding mechanism in the EPS sheet production system provided by the invention.
Fig. 4 is a schematic structural diagram of a filter in the EPS sheet production system according to the invention.
Fig. 5 is a schematic structural diagram of a molding die in the EPS sheet production system provided by the invention.
Fig. 6 is a schematic structural diagram of a mold core in the EPS sheet production system provided by the invention.
Fig. 7 is a schematic structural diagram of a rear plug in the EPS sheet production system according to the invention.
Fig. 8 is a schematic structural view of a rear jacket body in the EPS sheet production system according to the invention.
Fig. 9 is a perspective view of a blowing mechanism in the EPS sheet production system provided by the invention.
Fig. 10 is a side view of a blowing mechanism in the EPS sheet production system provided by the invention.
Fig. 11 is a cross-sectional view of a guide cylinder in the EPS sheet production system provided by the invention.
Detailed Description
The invention provides an EPS sheet production system, which aims to make the purposes, technical schemes and effects of the invention clearer and more definite, and further details the invention by referring to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Herein, the rear refers to the direction along which the material moves, i.e., the direction a to G in fig. 1, the front and rear are reversed.
Referring to fig. 1 to 11, the EPS sheet production system provided by the present invention includes an extruder a, a first feeding mechanism B and a second feeding mechanism C for conveying PS pellets and a foaming agent to the extruder, a forming die D disposed at an output port of the extruder, a blowing mechanism E disposed behind the forming die, and a winding device G disposed behind the blowing mechanism; the forming die is used for extruding EPS material (EPS material is formed by foaming PS) into EPS sheets in a conical sheet shape, the air blowing mechanism is used for shaping the EPS sheets into cylinders and then cutting and expanding the EPS sheets along the length direction, and the winding device is used for winding the expanded EPS sheets.
During operation, PS granules and a foaming agent are respectively sent into an extruder for foaming through the first feeding mechanism and the second feeding mechanism, the EPS material obtained through foaming is extruded into an EPS sheet 90 in a conical sheet shape from a forming die under the action of the extruder, the EPS sheet moves backwards under the traction force of a winding device, a cylindrical sheet is formed after shaping by a blowing mechanism, and the sheet is pulled and wound by the winding device after being cut and unfolded along the length direction in the blowing mechanism, so that the whole production process is continuous, high in automation degree and high in production efficiency.
The winding device G mainly comprises a tensioning roller set, a winding roller, a cutting tool and a corresponding driving mechanism; wherein the tensioning roller set can flatten the EPS sheet and eliminate bending generated during shaping in the blowing mechanism.
Specifically, the extruder A is a screw extruder, a screw cylinder 1 of the extruder A is connected with a hopper 1.1 for throwing PS granules and an input port 1.2 for inputting foaming agent, a plurality of heating assemblies 1.3 are further arranged on the screw cylinder, and part of heating assemblies are arranged between the hopper and the input port.
PS granules are heated and melted after entering the screw cylinder from the hopper 1.1, then mixed with a foaming agent, and then heated and foamed in the process of conveying the PS granules backwards to form the EPS material. At present, when using an extruder to foam PS materials, two extruders are usually used, one extruder is used for melting PS granules, the other extruder is used for mixing and foaming the melted PS materials and foaming agents, a feeding mechanism for conveying the melted PS materials is also required to be arranged between the two extruders, the floor area is large, the structure is complex, and compared with the prior art, the extruder in the application has small floor area and simple structure.
Further, as shown in fig. 3, the first feeding mechanism B includes a storage box 2 for storing PS granules, and a feeding auger 3; the lower end of the feeding auger extends into the storage box, and the outlet at the upper end of the feeding auger is aligned with the opening at the upper end of the hopper; the second feeding mechanism C comprises a case, a storage tank and a pump, wherein the storage tank is arranged in the case and used for storing foaming agent, and the pump is used for conveying the foaming agent; the second feeding mechanism feeds the input port through a feed pipe 4. The first feeding mechanism and the second feeding mechanism can ensure the continuity and automation of feeding.
In this embodiment, as shown in fig. 2 and 4, a filter 5 is disposed at the outlet of the screw 1; the filter comprises a shell 5.1, a filter screen 5.2 inserted in the shell and a cylinder 5.3 for inserting the filter screen; through holes 5.1a for EPS materials to pass through are formed in the front wall and the rear wall of the shell, and the filter screen is inserted between the two through holes 5.1 a. When EPS material passes the filter screen, impurity and particulate matter wherein will be filtered, prevent that it from getting into in the forming die and causing the jam, and can realize the plug of filter screen through the cylinder, conveniently carry out the change of filter screen.
The cylinder 5.3 is fixed on a mounting plate 5.4 which is fixedly connected with the shell through a plurality of connecting rods 5.5, the filter screen 5.2 is arranged in a filter screen frame 5.2a, and the filter screen frame is connected with a piston rod of the cylinder 5.3 through screws so as to be convenient to assemble and disassemble.
Referring to fig. 5-8, the forming die D comprises a core sleeve 6 fixedly connected with the filter shell 5.1, wherein the core sleeve is internally provided with a cavity 6.1 extending from front to back, and the front end of the cavity is communicated with a through hole 5.1a of the filter; a mold core 7 is arranged in the cavity, and a flow passage 6.1a with an annular cross section, which gradually becomes smaller from front to back, is enclosed between the wall surface of the cavity and the mold core; the rear side of the core sleeve is provided with a rear plug 8, a conical gap 9 is arranged between the front end of the rear plug and the rear end of the core sleeve, and the gap is communicated with the flow channel; a blowing mechanism 10 for cooling the EPS sheet is also included.
In operation, EPS material is extruded from the extruder into the cavity of the core sleeve and moves from front to back (according to the dashed arrow in fig. 5), and after passing through the flow channel between the cavity wall and the mold core, the extruded material is extruded in a conical shape sheet shape from a conical gap, and after being cooled by air blown by the air blowing mechanism, the extruded material forms an EPS sheet 90.
Specifically, the blowing mechanism 10 includes a wind ring 10.1 sleeved at the rear end of the core sleeve 6, and a first blower 10.2 for blowing air to the wind ring; the circumference of the air ring is uniformly provided with a plurality of air inlets 10.1a along the circumferential direction, the rear side surface of the air ring is provided with an annular air outlet, and the first air blower supplies air to all the air inlets simultaneously through the air delivery pipe. Wind enters the wind ring from each wind inlet along the radial direction and then finally is sprayed out backward from the wind outlet (the wind moves along the solid arrows in fig. 5), and the sprayed wind is uniform in the circumferential direction, so that the sheet is uniformly cooled.
Further, the cross section of the cavity 6.1 is circular; the mold core 7 comprises a circular mounting part 7.1, a first cylindrical part 7.2, a truncated cone part 7.3 and a second cylindrical part 7.4 from front to back, wherein the circular mounting part is used for being connected and fixed with the core sleeve 6; the mounting part is provided with a plurality of through holes 7.2a communicated with the front surface and the rear surface, and the rear plug 8 is arranged at the rear end of the second cylindrical part. The mould core is fixed in the cavity by the mounting part, and the EPS material passes through the mounting part from the via hole 7.2a, so that the mounting part does not influence the EPS material to move in the cavity.
In this embodiment, an external thread 7.4a is provided at the rear end of the second cylindrical portion 7.4, a mounting hole 8.1 adapted to the second cylindrical portion is provided at the center of the rear plug 8, the front part of the mounting hole is a unthreaded hole, and an internal thread is provided at the rear part of the mounting hole; the rear plug is in threaded connection with the rear end of the second cylindrical part through the internal thread and is locked through a locking screw 8.2. Here, a threaded bore 8.3 is radially provided in the rear plug, in which the locking screw 8.2 is arranged. The front and back positions of the back plugs of the structure are adjustable, so that the width of the gap 9 is adjusted, and EPS sheets with different thicknesses can be produced through the same forming die. The back plug is required to move back and forth and is completed through rotary motion, and the motion of the freedom degree is locked by the locking screw, so that the position stability of the back plug is high.
Here, the mold core 7 further comprises a conical guide part 7.5 arranged at the front end of the mounting part 7.1, so that the moving resistance of the EPS material in the cavity can be reduced, and smooth movement of the EPS material is ensured.
Specifically, the core sleeve 6 comprises a front sleeve body 6.2 fixedly connected with the extruder, a middle sleeve body 6.3 connected to the rear end of the front sleeve body, and a rear sleeve body 6.4 connected to the rear end of the middle sleeve body; the front sleeve body, the middle sleeve body and the rear sleeve body are provided with sub-cavities, and the sub-cavities form the cavity 6.1; the rear end face of the front sleeve body and the front end face of the middle sleeve body are provided with mounting grooves and clamp the mounting part 7.1 of the mold core 7 through the mounting grooves, as shown in fig. 5.
Preferably, an annular clamping groove 6.4a is formed in the peripheral surface of the rear sleeve body 6.4, and the rear sleeve body is fixed at the rear end of the middle sleeve body 6.3 through two semicircular clamping rings 6.5; one end of the semicircular clamping ring is clamped with the annular clamping groove, and the other end of the semicircular clamping ring is connected with the middle sleeve body through a screw. Here, the rear end of the semicircular snap ring 6.5 is provided with a protrusion 6.5a adapted to the annular clamping groove 6.4a, which protrusion 6.5a is clamped in the annular clamping groove. The semicircular clamping ring can be assembled and disassembled, and the rear sleeve bodies with different inner diameters can be replaced to change the size of the flow passage, so that the production requirements of EPS sheets with different thicknesses are met.
Referring to fig. 9-11, the blower mechanism E includes a frame 11, a second blower 12 and an electric cabinet 13 disposed on the frame, a cylindrical guide cylinder 14 fixed on the top of the electric cabinet, and a cutter 15 disposed on the rear side of the guide cylinder; the front end of the guide cylinder is opposite to the outlet of the forming die D, and the guide cylinder is provided with an air inlet pipe 14.1 penetrating through the front end and the rear end and a plurality of air return holes 14.2 communicated with the front end and the rear end; the second blower is connected with the rear end of the air inlet pipe through an air pipe 12.1; the cutter is used for cutting the cylindrical EPS sheet from the lower side; the second blower is electrically connected with the electric control box and is controlled by the electric control box to work.
Referring to fig. 11, the working principle of the blower mechanism E is: the air inlet pipe blows air from back to front (along the direction of a curved arrow in fig. 11), the conical EPS sheet is blown to be swelled, air flow can flow out from the return air Kong Wanghou after striking the EPS sheet to ensure that wind energy continuously enters, and then the swelled EPS sheet moves backwards along the circumferential surface of the guide cylinder under the traction of the winding machine, so that the sheet is cooled and shaped into a cylindrical sheet, and when the cylindrical sheet moves to the position of the cutter, the cylindrical sheet is cut and unfolded from the lower side by the cutter.
Wherein, the electric cabinet 13 is internally provided with a controller, a control button and a corresponding control circuit. Preferably, a frequency converter is further arranged in the electric cabinet 13 to adjust the power of the second blower 12, so as to adapt to the production requirements of sheets with different thicknesses.
Specifically, the guide cylinder 14 is composed of a front wall, a rear wall and a circumferential wall, the air inlet pipe 14.1 is arranged on the front wall and the rear wall in a penetrating manner, the rear part of the air inlet pipe is fixed at the top of the electric cabinet 13, and a plurality of air return holes 14.2 are formed in the front wall and the rear wall. Because the guide cylinder is of a hollow structure and has small weight, the guide cylinder can be arranged at the top of the electric cabinet in a cantilever manner without additional support, thereby ensuring that the sheet forming process is not hindered.
Further, a disc portion 14.3 is further disposed in front of the guide cylinder 14, and the diameter of the disc portion is equal to that of the guide cylinder; the disc part consists of a rear wall and a peripheral wall, the air inlet pipe 14.1 is arranged on the rear wall of the disc part in a penetrating way, and a plurality of air return holes 14.2 are arranged on the rear wall of the disc part. When only the guide cylinder is arranged, part of air flow does not flow away from the air return hole but flows away from the outer side of the circumferential wall, so that the sheet cannot adhere to the wall and move, the shape of the sheet is affected, after the disc part is arranged, the part of air flow can return to the air return hole again from a gap between the guide cylinder and the disc part, the air flow flowing away from the outer side is reduced, and the product quality is improved.
In this embodiment, an atomizing device is disposed in the electric cabinet 13 and water mist is conveyed to the front of the guide cylinder through a conveying pipe 16, and the conveying pipe is arranged in the air return hole 14.2 of the guide cylinder in a penetrating manner. Because the temperature of the EPS sheet coming out of the forming die is higher, the guide cylinder can be heated to be high, the cooling and shaping of the sheet are not facilitated, and the sheet shaping is promoted by conveying water mist forwards to cool the guide cylinder and the sheet; on the other hand, the friction between the sheet and the guide cylinder can be reduced, and the product quality is improved; in addition, static electricity can be removed.
In addition, the blowing mechanism E further includes a guide rail 17 provided along the moving direction of the EPS sheet 90, and the frame 11 is movably provided on the guide rail by a roller 11.1 and locked on the guide rail by a locking screw 11.2. The distance requirement from the forming die to the guide cylinder is different corresponding to the sheets with different thicknesses, the position of the frame is adjustable, the production requirement of the sheets with different thicknesses can be met, and the applicability is high.
Referring to fig. 1, an atomizer H for spraying water mist to the EPS sheet 90 and a blowing device I for blowing the EPS sheet are provided in front of the winding device G. The static electricity can be further removed by spraying mist, and the blowing device has a blowing device for blowing dry moisture stuck on the EPS sheet, preferably, hot air.
It will be understood that equivalents and modifications will occur to those skilled in the art based on the present invention and its spirit, and all such modifications and substitutions are intended to be included within the scope of the present invention.
Claims (4)
1. The EPS sheet production system is characterized by comprising an extruder, a first feeding mechanism, a second feeding mechanism, a forming die, a blowing mechanism and a winding device, wherein the first feeding mechanism and the second feeding mechanism are respectively used for conveying PS granules and foaming agents to the extruder; the molding die is used for extruding the EPS material into an EPS sheet in a conical sheet shape, the air blowing mechanism is used for shaping the EPS sheet into a cylindrical shape and then cutting and expanding the EPS sheet along the length direction, and the winding device is used for winding the expanded EPS sheet;
The extruder is a screw extruder, a screw cylinder is connected with a hopper for throwing PS granules and an input port for inputting foaming agent, the screw cylinder is also provided with a plurality of heating components, and part of the heating components are arranged between the hopper and the input port;
A filter is arranged at the outlet of the screw cylinder; the filter comprises a shell, a filter screen inserted in the shell and a cylinder for inserting the filter screen; the front wall and the rear wall of the shell are respectively provided with a through hole for EPS material to pass through, and the filter screen is inserted between the two through holes;
The forming die comprises a core sleeve fixedly connected with the filter shell, a cavity extending from front to back is arranged in the core sleeve, and the front end of the cavity is communicated with the through hole of the filter; a mold core is arranged in the cavity, and a flow passage with an annular cross section, which gradually becomes smaller from front to back, is enclosed between the wall surface of the cavity and the mold core; the rear side of the core sleeve is provided with a rear plug, a conical gap is arranged between the front end of the rear plug and the rear end of the core sleeve, and the gap is communicated with the flow channel; the device also comprises a blowing mechanism for cooling the EPS sheets;
The blowing mechanism comprises a frame, a second blower and an electric cabinet which are arranged on the frame, a cylindrical guide cylinder fixed at the top of the electric cabinet, and a cutter arranged at the rear side of the guide cylinder; the front end of the guide cylinder is opposite to the outlet of the forming die, and the guide cylinder is provided with an air inlet pipe penetrating through the front end and the rear end and a plurality of air return holes communicated with the front end and the rear end; the second air blower is connected with the rear end of the air inlet pipe through an air pipe; the cutter is used for cutting the cylindrical EPS sheet from the lower side; the second air blower is electrically connected with the electric control box and is controlled by the electric control box to work;
A disc part is arranged in front of the guide cylinder, and the diameter of the disc part is equal to that of the guide cylinder; the disc part consists of a rear wall and a peripheral wall, the air inlet pipe is arranged on the rear wall of the disc part in a penetrating way, and a plurality of air return holes are formed in the rear wall of the disc part;
An atomization device is arranged in the electric cabinet and is used for conveying water mist to the front of the guide cylinder through a conveying pipe, and the conveying pipe is arranged in an air return hole of the guide cylinder in a penetrating mode.
2. The EPS sheet production system of claim 1, wherein the first loading mechanism includes a storage bin for storing PS pellets, and a feeding auger; the lower end of the feeding auger extends into the storage box, and the outlet at the upper end of the feeding auger is aligned with the opening at the upper end of the hopper; the second feeding mechanism comprises a case, a storage tank and a pump, wherein the storage tank is arranged in the case and used for storing foaming agent, and the pump is used for conveying the foaming agent; the second feeding mechanism feeds the input port through a feeding pipe.
3. The EPS sheet production system according to claim 1, wherein the blowing mechanism includes a blower ring fitted over a rear end of the core sleeve, and a first blower for blowing air to the blower ring; the air ring is characterized in that a plurality of air inlets are uniformly formed in the circumferential surface of the air ring along the circumferential direction, annular air outlets are formed in the rear side surface of the air ring, and the first air blower supplies air to all the air inlets simultaneously through the air pipes.
4. The EPS sheet production system according to claim 1, characterized in that an atomizer for spraying water mist to the EPS sheet and a blowing device for blowing dry the EPS sheet are provided in front of the winding device.
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| CN201910262151.7A CN109927267B (en) | 2019-04-02 | 2019-04-02 | EPS sheet production system |
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| CN201910262151.7A CN109927267B (en) | 2019-04-02 | 2019-04-02 | EPS sheet production system |
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| CN110281497B (en) * | 2019-07-26 | 2024-09-03 | 佛山市高明爱博广告装饰材料有限公司 | EPS sheet production line |
| CN116277856B (en) * | 2023-05-18 | 2023-07-21 | 河北金威新型建筑材料有限公司 | Rubber extrusion equipment |
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