A sheet extrusion device and a method for producing sheets

Abstract

The present invention discloses a sheet extrusion device and a method for producing sheets, belonging to the technical field of building decoration equipment. It includes a frame, a conveying device, a hopper, a screw conveyor, a hot melting device, an extrusion die and a cooling device. The extrusion die includes an upper die and a lower die. The upper surface of the lower die is provided with strip-shaped grooves or strip-shaped ridges, and the strip-shaped grooves and / or the surfaces of the strip-shaped ridges are provided with anti-slip dies that are mutually engaged and detachable; the inner and / or outer surfaces of the anti-slip dies are provided with anti-slip patterns. In the present invention, strip-shaped grooves or strip-shaped ridges are provided in the lower die, and the extruded sheets have integrally formed vertical keels or grooves. The sheets are directly clamped on the wall through the cooperation of the vertical keels or grooves and the horizontal keels on the wall, and the installation of the sheets is more stable and fast, and its maintenance and replacement are convenient; the replacement of the anti-slip die makes the shapes and styles of the vertical keels or grooves more diversified, meeting the installation of different shapes and styles.

Description

Technical Field

[0001] The present invention relates to the technical field of building decoration equipment, and particularly relates to a plate extrusion device and a method for producing plates. Background Art

[0002] A plate extrusion die is a device for automatically producing lightweight partition plates. The production process of forming a flat plate is completed at one time from feeding, feeding, cloth laying, extrusion molding, cutting, palletizing, curing, plate separation to finished products. The equipment has a high degree of automation, runs smoothly, and the specifications can be adjusted arbitrarily. The surface of the product is flat, smooth, and has a high density, truly realizing the industrialized assembly line production of new building wall plates. Greatly reducing the labor intensity of production workers; completely changing many drawbacks of the previous vertical mold and flat mold casting.

[0003] However, most of the existing plate molds are flat plates, and they need to be fixed on the wall through the cooperation between keels during installation.

[0004] In addition, the keels are connected by alloy parts, which is inconvenient for installation. At the same time, when disassembling, the whole needs to be disassembled, which is inconvenient for maintenance.

[0005] There are also special-shaped grooves available, but the grooves are generally fixed on the mold, which is inconvenient to change the shape of the mold. If the grooves are to be replaced, a new mold needs to be opened, increasing the capital investment. Summary of the Invention

[0006] In order to solve the above problems, the present invention proposes a plate extrusion device that can integrally form special-shaped plates, facilitate the installation of plates, and is convenient for replacing the mold.

[0007] The present invention also provides a method for producing plates using the plate extrusion device.

[0008] In order to achieve the above object, the present invention is realized by the following technical solutions:

[0009] A sheet extrusion device, comprising a frame, on which a conveying device is arranged, and a sheet forming device is also arranged on the frame. The sheet forming device includes a hopper, a screw conveyor, a hot melting device, an extrusion die and a cooling device; the lower end of the hopper is connected to the screw conveyor, the discharge end of the screw conveyor is connected to the hot melting device, the hot melting device is connected to the feed end of the extrusion die, and the discharge end of the extrusion die is connected to the cooling device through the conveying device. A traction device and a cutting device are sequentially arranged at the end of the cooling device. The driving end of the screw conveyor is connected to a driving motor. The extrusion die includes an upper die and a lower die, and the upper die and the lower die are arranged to fit each other; baffles are arranged on two sides of the upper die, and the lower ends of the baffles slide up and down at corresponding positions of the lower die; adjusting devices for adjusting the distance between the upper die and the lower die are arranged at four ends of the upper die and the lower die; a strip-shaped groove or a strip-shaped rib is arranged on the upper surface of the lower die, and an anti-slip die that fits with the strip-shaped groove is arranged in the strip-shaped groove; an anti-slip die that fits with the strip-shaped rib is arranged on the surface of the strip-shaped rib; the anti-slip die is detachably arranged in the strip-shaped groove or on the surface of the strip-shaped rib; anti-slip lines are arranged on the inner and / or outer surface of the anti-slip die.

[0010] Further, side ears for fixing the anti-slip die in the strip-shaped groove are arranged at two ends of the side of the anti-slip die in the strip-shaped groove. The side ears are turned left and right along the edge of the end of the anti-slip die, and two sides of the anti-slip die are embedded into the lower die.

[0011] On the upper edge of the end of the anti-slip die on the surface of the strip-shaped rib, side ears for fixing the anti-slip die on the surface of the strip-shaped rib are arranged. The side ears turn outwards along the upper and lower edges of the anti-slip die; two sides of the anti-slip die are embedded into the lower die.

[0012] Further, the side ears and the end edge of the anti-slip die are connected by a pin or a hinge.

[0013] Further, screw holes are arranged on the side ears of the anti-slip die and on the end surface of the lower die, and the anti-slip die and the strip-shaped groove or the strip-shaped rib are screwed through the side ears.

[0014] Further, the longitudinal section of the anti-slip die is square, or circular, or special-shaped.

[0015] Further, the adjusting device is an adjusting screw.

[0016] Further, a heating device is arranged in the upper die and the lower die, and the heating device is preferably an electromagnetic heater.

[0017] Further, the cooling device includes upper cooling and lower cooling with a cavity structure, and a sheet channel is formed between the upper cooling and the lower cooling; water outlets and water inlets are provided on the sides of the upper cooling and the lower cooling respectively.

[0018] A method for producing a sheet according to the present invention includes the following steps:

[0019] (1) Loading;

[0020] (2) Screw feeding;

[0021] (3) Melting; the material is melted at a temperature of 5 - 20 MPa and 100 - 200 °C;

[0022] (4) Extrusion molding using a sheet extrusion device;

[0023] (5) Cooling;

[0024] (6) Traction;

[0025] (7) Cutting.

[0026] The beneficial effects of a sheet extrusion device and a method for producing a sheet according to the present invention are as follows:

[0027] (1) A strip-shaped groove or a strip-shaped rib is provided in the lower die. The strip-shaped groove or the strip-shaped rib can enable the sheet to have an integrally formed vertical keel or groove. Through the cooperation of the vertical keel or the groove with the horizontal keel on the wall, it can be directly clamped on the wall. The installation of the sheet is more stable, the installation process is convenient, fast, and its maintenance and replacement are more convenient.

[0028] (2) Anti-slip molds that fit each other are provided inside or on the surface of the strip-shaped rib. The styles and anti-slip patterns of the anti-slip molds are diverse; the anti-slip molds are detachably arranged in the lower die, which is convenient for replacing the anti-slip molds, making the styles of the vertical keel formed by the strip-shaped rib or the groove formed by the strip-shaped rib more diverse, meeting different shapes and styles of vertical keels or grooves. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 is the structural schematic diagram of the present invention;

[0031] Figure 2 is a structural schematic diagram of an extrusion die in the present invention;

[0032] Figure 3 is a schematic structural diagram of an extrusion die in the present invention;

[0033] Figure 4 is Figure 2 an enlarged schematic diagram of A in;

[0034] Figure 5 is Figure 3 an enlarged schematic diagram of B in;

[0035] 1 frame, 2 conveying device, 3 hopper, 4 screw conveyor, 5 hot melting device, 6 extrusion die, 7 cooling device, 8 traction device, 9 cutting device;

[0036] 601 upper die, 602 lower die, 603 baffle, 604 adjusting screw, 605 strip-shaped groove, 606 strip-shaped rib, 607 anti-slip die, 608 anti-slip pattern, 609 support ear, 610 pin, 611 screw hole;

[0037] 701 water outlet, 702 water inlet, 703 upper cooling, 704 lower cooling. Specific embodiments

[0038] The present invention will be further described in detail below in conjunction with specific embodiments and the accompanying drawings.

[0039] Embodiment 1

[0040] A sheet extrusion device, such as Figure 1 , Figure 2 and Figure 4As shown in the figure, it includes a frame 1, a conveying device 2 is arranged on the frame 1, and a sheet metal forming device is also arranged on the frame 1. The sheet metal forming device includes a hopper 3, a screw conveyor 4, a hot melting device 5, an extrusion die 6 and a cooling device 7; the lower end of the hopper 3 is connected to the screw conveyor 4, the discharge end of the screw conveyor 4 is connected to the hot melting device 5, the hot melting device 5 is connected to the feed end of the extrusion die 6, and the discharge end of the extrusion die 6 is connected to the cooling device 7 through the conveying device 2. A traction device 8 and a cutting device 9 are sequentially arranged at the end of the cooling device 7. The driving end of the screw conveyor 4 is connected to a driving motor. The extrusion die 6 includes an upper die 601 and a lower die 602, and the upper die 601 and the lower die 602 are arranged in relative conformity; two side surfaces of the upper die 601 are provided with baffles 603, and the lower ends of the baffles 603 slide up and down at corresponding positions of the lower die 602; adjusting devices for adjusting the distance between the upper die 601 and the lower die 602 are arranged at four ends of the upper die 601 and the lower die 602; a strip-shaped groove 605 is arranged on the upper surface of the lower die 602, and an anti-slip die 607 that mutually conforms to the strip-shaped groove 605 is arranged in the strip-shaped groove 605; the anti-slip die 607 is detachably arranged in the strip-shaped groove 605; anti-slip lines 608 are arranged in the anti-slip die 607.

[0041] In this embodiment, side ears 609 for fixing the anti-slip die 607 in the strip-shaped groove 605 are arranged on the side edges at both ends of the anti-slip die 607, and the side ears 609 are turned left and right along the edge of the end of the anti-slip die 607. On both sides in the strip-shaped groove 605, groove bodies are arranged, and the two side edges of the anti-slip die 607 are embedded in the groove bodies to prevent the anti-slip die 607 from moving up and down in the strip-shaped groove 605 and maintain the stability of the anti-slip die 607 in the strip-shaped groove 605.

[0042] In this embodiment, the lug 609 is connected to the end edge of the anti-slip die 607 by a pin 610 or a hinge. Screw holes 611 are provided on both the upper and lower surfaces of the end of the lug 609 of the anti-slip die 607 and the lower die 602. The anti-slip die 607 is screwed to the lower die 602 through the lug 609, and the screwing can prevent the anti-slip die 607 from sliding in the up and down directions. When the lug 609 is turned left and right, the side of the lug 609 and the anti-slip die 607 can be in a straight line, and it can be directly inserted into the grooves on both sides inside the strip-shaped groove 605 and then pushed in. The grooves can prevent the anti-slip die 607 from sliding in the left and right directions. In the existing equipment, the distance between the upper die 601 and the lower die 602 has been precisely adjusted, that is, it is fixed within a certain range. If the anti-slip die 607 is directly placed down from the lower die 602 for replacement, the distance between the upper die 601 and the lower die 602 needs to be adjusted, making the replacement more troublesome. However, the folding lug 609 provided in the embodiment enables the anti-slip die 607 to be directly inserted and pushed in from the end of the lower die 602, making the replacement more convenient.

[0043] In this embodiment, the longitudinal section of the anti-slip die 607 is square, or circular, or special-shaped. The main function of the anti-slip die 607 is to form vertical keels with anti-slip patterns 608 on the sheet material, which can be more stably fixed on the horizontal keels and improve the stability of the sheet material. The longitudinal section shape of the vertical keel can be various, such as circular, trapezoidal, inverted triangular, etc. Of course, the longitudinal section of the anti-slip die 607 of the present invention is not limited to square, circular, trapezoidal, and inverted triangular, as long as it can form vertical keels and achieve stable fixation, it is within the scope protected by the present invention.

[0044] In this embodiment, the style of the anti-slip pattern is any style of the existing anti-slip patterns, as long as it can achieve the anti-slip effect, and the style of the anti-slip pattern is not limited.

[0045] In this embodiment, the adjusting device is an adjusting screw 604. Screw holes 611 are provided at the four corners of the upper die 601 and the lower die 602, and the adjusting screw 604 is arranged in the screw holes 611. The distance between the upper die 601 and the lower die 602 is adjusted by the adjusting screw 604 to accommodate sheet materials of different sizes and thicknesses.

[0046] In this embodiment, heating devices are provided inside the upper die 601 and the lower die 602. Generally, they are electromagnetic heaters. The setting of the heating devices mainly ensures that the molten state after melting remains molten in the extrusion die 6, making it have better fluidity and enabling it to be quickly and evenly formed in the extrusion die 6.

[0047] In this embodiment, the cooling device 7 includes an upper cooling device 703 and a lower cooling device 704 of a cavity structure, and a plate channel is formed between the upper cooling device 703 and the lower cooling device 704; the upper cooling device 703 and the lower cooling device 704 are both provided with a water outlet 701 and a water inlet 702 on their sides. The molding die coming out of the extrusion die 6 immediately enters the cooling device 7, and there are multiple upper cooling devices and multiple lower cooling devices in the cooling device 7. There is a rotating rod in the conveying device 2 between two adjacent lower cooling devices, and the plate is pulled to run in the cooling device 7 under the rotation of the rotating rod. Rapid shaping is achieved through water cooling in the cooling device 7.

[0048] In this embodiment, the hot melt device 5 is a high-temperature and high-pressure hot melt device 5. The screw conveyor sends the material into the hot melt device 5, and the material is quickly formed into a hot melt state through the high temperature and high pressure of the hot melt device 5, and directly enters the extrusion mold 6 for extrusion molding according to the extrusion and flow force.

[0049] In this embodiment, the shaped sheet enters the traction device 8, which includes an upper roller and a lower roller. A sheet passage is provided between the upper roller and the lower roller, and the surfaces of the upper roller and the lower roller are provided with a surface with a large friction coefficient. The sheet enters the sheet passage and is pulled by the rotation of the upper roller and the lower roller, so that the sheet runs on the production line. The upper roller and the lower roller are driven by a motor.

[0050] In this embodiment, the conveying device 2 includes a conveying line formed by conveying rollers. The ends of the conveying rollers can be driven by gears and chains, and the chains can be driven to rotate by motors, so that the formed plates can move forward on the conveying line while having a supporting function.

[0051] In this embodiment, the cutting device 9 is a unidirectional cutting device 9 or a bidirectional cutting device 9. That is, the cutting device 9 is installed on the conveyor line. The cutting device 9 is generally a cutting device 9 of existing plate production, which can achieve fast cutting, and its structure and principle are not described in detail here.

[0052] Example 2

[0053] A sheet extrusion device, such as Figure 1 , Figure 3 and Figure 5As shown in the figure, it includes a frame 1, on which a conveying device 2 is provided. A sheet forming device is also provided on the frame 1. The sheet forming device includes a hopper 3, a screw conveyor 4, a hot melting device 5, an extrusion die 6 and a cooling device 7. The lower end of the hopper 3 is connected to the screw conveyor 4, the discharge end of the screw conveyor 4 is connected to the hot melting device 5, the hot melting device 5 is connected to the feed end of the extrusion die 6, and the discharge end of the extrusion die 6 is connected to the cooling device 7 through the conveying device 2. A traction device 8 and a cutting device 9 are sequentially arranged at the end of the cooling device 7. The drive end of the screw conveyor 4 is connected to a drive motor. The extrusion die 6 includes an upper die 601 and a lower die 602, and the upper die 601 and the lower die 602 are arranged to fit each other. Two side surfaces of the upper die 601 are provided with baffles 603, and the lower ends of the baffles 603 slide up and down at corresponding positions of the lower die 602. Adjusting devices for adjusting the distance between the upper die 601 and the lower die 602 are provided at four ends of the upper die 601 and the lower die 602. A strip-shaped convex rib 606 is provided on the upper surface of the lower die 602, and an anti-slip die 607 that fits with the strip-shaped convex rib 606 is provided on the surface of the strip-shaped convex rib 606. The anti-slip die 607 is detachably arranged on the surface of the strip-shaped convex rib 606. Anti-slip lines 608 are provided on the outer surface of the anti-slip die 607.

[0054] In this embodiment, an ear 609 for fixing the anti-slip die 607 on the surface of the strip-shaped convex rib 606 is provided at the upper edge of the end of the anti-slip die 607 on the surface of the strip-shaped convex rib 606, and the ear 609 turns outwards along the upper and lower edges of the anti-slip die 607. The two side edges of the anti-slip die 607 are embedded into the lower die 602.

[0055] In this embodiment, the lug 609 is connected to the upper edge of the end of the anti-slip die 607 by a pin 610 or a hinge. Screw holes 611 are provided on the surface of the end of the upper and lower dies 602 (i.e., the strip-shaped convex ribs 606) on the lug 609 of the anti-slip die 607. The anti-slip die 607 is screwed to the lower die 602 through the lug 609, and the screwing can prevent the anti-slip die 607 from sliding in the up and down directions. The lug 609 can be turned downward so that the top of the lug 609 and the anti-slip die 607 are in the same plane. The two sides of the lug 609 are directly inserted into the grooves on both sides of the strip-shaped convex rib 606 and can be pushed in. The grooves can prevent the anti-slip die 607 from sliding in the left and right directions. In the existing equipment, the distance between the upper die 601 and the lower die 602 has been precisely adjusted, that is, it is fixed within a certain range. The grooves can fix the anti-slip die 607 left and right. If the anti-slip die 607 is directly placed down from the lower die 602 for replacement, the distance between the upper die 601 and the lower die 602 needs to be adjusted, making the replacement more troublesome. The folding lug 609 provided in the embodiment can enable the anti-slip die 607 to be directly inserted and pushed in from the end of the lower die 602, making the replacement more convenient.

[0056] In this embodiment, the longitudinal section of the anti-slip die 607 is square, or circular, or special-shaped. The main function of the anti-slip die 607 is to form vertical keels with anti-slip patterns 608 on the sheet material, which can be more stably fixed on the horizontal keels and improve the stability of the sheet material. The longitudinal section shape of the vertical keel can be various, such as circular, trapezoidal, inverted triangular, etc. Of course, the longitudinal section of the anti-slip die 607 of the present invention is not limited to square, circular, trapezoidal, and inverted triangular, as long as it can form vertical keels and achieve stable fixation, it is within the scope protected by the present invention.

[0057] In this embodiment, the pattern of the anti-slip pattern is any pattern of the existing anti-slip pattern, as long as it can achieve the anti-slip effect, and the pattern of the anti-slip pattern is not limited.

[0058] In this embodiment, the adjusting device is an adjusting screw 604. Screw holes 611 are provided at the four corners of the upper die 601 and the lower die 602. The adjusting screw 604 is arranged in the screw holes 611, and the distance between the upper die 601 and the lower die 602 is adjusted by the adjusting screw 604 to accommodate sheet materials of different sizes and thicknesses.

[0059] In this embodiment, heating devices are provided in the upper die 601 and the lower die 602. Generally, they are electromagnetic heaters. The setting of the heating devices mainly ensures that the molten state after melting remains molten in the extrusion die 6, so that it has better fluidity and can be quickly and evenly formed in the extrusion die 6.

[0060] In this embodiment, the cooling device 7 includes an upper cooling device and a lower cooling device of a cavity structure, and a plate channel is formed between the upper cooling device and the lower cooling device; the upper cooling device and the lower cooling device are both provided with a water outlet 701 and a water inlet 702 on their sides. The molding die coming out of the extrusion die 6 immediately enters the cooling device 7, and there are multiple upper cooling devices and multiple lower cooling devices in the cooling device 7. There is a rotating rod in the conveying device 2 between two adjacent lower cooling devices, and the plate is pulled to run in the cooling device 7 under the rotation of the rotating rod. Rapid shaping is achieved through water cooling in the cooling device 7.

[0061] In this embodiment, the hot melt device 5 is a high-temperature and high-pressure hot melt device 5. The screw conveyor delivers the material into the hot melt device 5. The material is quickly formed into a hot melt state through the high temperature and high pressure of the hot melt device 5, and directly enters the extrusion mold 6 for extrusion molding according to the flow force.

[0062] In this embodiment, the shaped sheet enters the traction device 8, which includes an upper roller and a lower roller. A sheet passage is provided between the upper roller and the lower roller, and the surfaces of the upper roller and the lower roller are provided with a surface with a large friction coefficient. The sheet enters the sheet passage and is pulled by the rotation of the upper roller and the lower roller, so that the sheet runs on the production line. The upper roller and the lower roller are driven by a motor.

[0063] In this embodiment, the conveying device 2 includes a conveying line formed by conveying rollers. The ends of the conveying rollers can be driven by gears and chains, and the chains can be driven to rotate by motors, so that the formed plates can move forward on the conveying line while having a supporting function.

[0064] In this embodiment, the cutting device 9 is a unidirectional cutting device 9 or a bidirectional cutting device 9. That is, the cutting device 9 is installed on the conveyor line. The cutting device 9 is generally a cutting device 9 of existing plate production, which can achieve fast cutting, and its structure and principle are not described in detail here.

[0065] Example 3

[0066] A method for producing a plate comprises the following steps:

[0067] (1) Loading: The material is selected according to the required material of the board, and in this embodiment, it is biomass straw. The crushed material is fed from the hopper 3;

[0068] (2) Screw feeding: After the material in the hopper 3 falls, it directly enters the screw conveyor 4, and is pushed into the hot melt device 5 by the screw conveyor 4;

[0069] (3) High-temperature and high-pressure melting; the material quickly forms a molten state under high temperature and high pressure in the hot melting device 5 and directly enters the extrusion die 6 for extrusion molding according to the flow force. The temperature of hot melting is generally 100 - 200 °C, preferably 140 °C in this embodiment, and the pressure is preferably 12 MPa, which can enable the material to quickly melt.

[0070] (4) Extrusion molding using the sheet extrusion device; the material enters the extrusion die 6, and the molten material is evenly distributed in the die through extrusion and flow force for extrusion molding. The temperature setting of the extrusion die mainly serves for molding, adjusting the flow rate, and surface brightness. Since the melt enters the die and is guided by the flow splitting cone, it has been transformed from a cylinder into a thin-walled melt in the shape required by the product. With the external heating of the heating device, the temperature of the parison melt can also be evenly increased to the optimal plasticization degree area. Therefore, the die temperature is directly related to the external molding quality of the product. It is worth noting that when the extrusion product has slight poor plasticization, it can also be solved by appropriately increasing the die temperature.

[0071] (5) Cooling; the extruded sheet directly enters the cooling device 7, and the sheet is cooled and shaped on the cooling device 7 through the circulation of cooling water.

[0072] (6) Traction; the shaped sheet enters the traction device 8 through the conveyor line. The traction device 8 includes an upper roller and a lower roller. There is a sheet channel between the upper roller and the lower roller, and the surfaces of the upper roller and the lower roller have a relatively large coefficient of friction. The sheet enters the sheet channel, and through the rotation and traction of the upper roller and the lower roller, the sheet runs on the production line.

[0073] (7) Cutting: Cut into the required sheet size using the cutting device 9.

[0074] The sheet produced by using the sheet extrusion device of the present invention is integrally formed with the vertical keel or groove, and the vertical keel or groove runs through the entire sheet. After installation, the vertical keel or groove has a certain pulling force on the sheet, avoiding the problem of the sheet bulging after long-term use and improving the stability of the sheet. At the same time, the vertical keel or groove on the sheet cooperates with the horizontal keel for clamping, making the installation of the sheet more convenient and fast. When replacing, the sheet can be directly removed at the corresponding position without having to disassemble and replace from the beginning, and the maintenance and replacement are fast and convenient.

[0075] Example 4

[0076] A method for producing a sheet, comprising the following steps:

[0077] (1) Feeding; the material is selected according to the required material of the sheet, which is plastic in this embodiment. The crushed material is fed from the hopper 3;

[0078] (2) Screw feeding; after the materials in the hopper 3 fall, they directly enter the screw conveyor 4 and are pushed into the hot melting device 5 through the screw conveyor 4;

[0079] (3) High-temperature and high-pressure melting; the materials quickly form a molten state under high temperature and high pressure in the hot melting device 5 and directly enter the extrusion die 6 for extrusion molding according to the flow force. The hot melting temperature is generally 100 - 200 °C, preferably 200 °C in this embodiment, and the pressure is preferably 14 MPa, which can make the materials melt quickly.

[0080] (4) Extrusion molding using a sheet extrusion device; the materials enter the extrusion die 6, and the molten materials are evenly distributed in the die through extrusion and flow force for extrusion molding. The temperature setting of the extrusion die mainly serves for molding, adjusting the flow rate, and surface brightness. Since the melt enters the die and is transformed from a cylinder into a thin-walled melt in the shape required by the product under the guidance of the flow splitter cone, and relying on the external heating of the heating device, the temperature of the parison melt can also be evenly raised to the optimal plasticization degree area. Therefore, the die temperature is directly related to the external molding quality of the product. It is worth noting that when the extrusion product has slight plasticization defects, it can also be solved by appropriately increasing the die temperature.

[0081] (5) Cooling; the extruded sheet directly enters the cooling device 7, and the sheet is cooled and shaped through the circulation of cooling water on the cooling device 7.

[0082] (6) Traction; the shaped sheet enters the traction device 8 through the conveyor line. The traction device 8 includes an upper roller and a lower roller. There is a sheet channel between the upper roller and the lower roller, and the surfaces of the upper roller and the lower roller have a relatively large friction coefficient. The sheet enters the sheet channel, and through the rotation and traction of the upper roller and the lower roller, the sheet runs on the production line.

[0083] (7) Cutting: Cut into the required sheet size using the cutting device 9.

[0084] In this embodiment, the specified sheet materials are not limited to biological straws and plastics, but can also be silica gel, PVC, PE, PP, biological materials, composite materials, etc., as long as they can be used as sheet materials.

[0085] The technical solutions provided by the embodiments of the present invention have been introduced in detail above. Specific examples are used in this article to elaborate on the principles and implementation manners of the embodiments of the present invention. The descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; at the same time, for those of ordinary skill in the art, based on the embodiments of the present invention, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A sheet extrusion device, comprising a frame, a conveying device is arranged on the frame, and a sheet forming device is also arranged on the frame. The sheet forming device includes a hopper, a screw conveyor, a hot melting device, an extrusion die and a cooling device; the lower end of the hopper is connected to the screw conveyor, the discharge end of the screw conveyor is connected to the hot melting device, the hot melting device is connected to the feed end of the extrusion die, and the discharge end of the extrusion die is connected to the cooling device through the conveying device. A traction device and a cutting device are sequentially arranged at the end of the cooling device, and the driving end of the screw conveyor is connected to a driving motor. It is characterized in that: The extrusion die includes an upper die and a lower die, and the upper die and the lower die are arranged to fit relatively; two side surfaces of the upper die are provided with baffles, and the lower ends of the baffles slide up and down at corresponding positions of the lower die; adjusting devices for adjusting the distance between the upper die and the lower die are arranged at four ends of the upper die and the lower die; a strip-shaped groove or a strip-shaped rib is arranged on the upper surface of the lower die, and an anti-slip die that fits with the strip-shaped groove is arranged in the strip-shaped groove; an anti-slip die that fits with the strip-shaped rib is arranged on the surface of the strip-shaped rib; the anti-slip die is detachably arranged in the strip-shaped groove or on the surface of the strip-shaped rib; anti-slip lines are arranged on the inner and / or outer surfaces of the anti-slip die. Side edges at both ends of the anti-slip die in the strip-shaped groove are provided with lugs for fixing the anti-slip die in the strip-shaped groove, and the lugs are turned left and right along the edge of the end of the anti-slip die, and both side edges of the anti-slip die are embedded into the lower die. Or, the upper edge of the end of the anti-slip die on the surface of the strip-shaped rib is provided with lugs for fixing the anti-slip die on the surface of the strip-shaped rib, and the lugs are turned outwards along the upper and lower edges of the anti-slip die; both side edges of the anti-slip die are embedded into the lower die.

2. The sheet extrusion device according to claim 1, It is characterized in that: The lugs and the end edge of the anti-slip die are connected by a pin or a hinge.

3. The sheet extrusion device according to claim 1, It is characterized in that: Screw holes are arranged on the lugs of the anti-slip die and the end surfaces of the upper and lower dies, and the anti-slip die and the strip-shaped groove or the strip-shaped rib are screwed through the lugs.

4. The sheet extrusion device according to claim 1, It is characterized in that: The longitudinal section of the anti-slip die is square, or circular, or special-shaped.

5. The sheet extrusion device according to claim 1, It is characterized in that: The adjusting device is an adjusting screw.

6. The sheet extrusion device according to claim 1, It is characterized in that: Heating devices are arranged in the upper die and the lower die.

7. The sheet extrusion device according to claim 1, It is characterized in that: The cooling device includes an upper cooling with a cavity structure and a lower cooling, and a sheet channel is formed between the upper cooling and the lower cooling; water outlets and water inlets are arranged on both side surfaces of the upper cooling and the lower cooling.

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