CN108145946B

CN108145946B - Plate extruder die

Info

Publication number: CN108145946B
Application number: CN201711400724.5A
Authority: CN
Inventors: 刘运群
Original assignee: Hunan Prince New Mstar Technology Ltd
Current assignee: Hunan Prince New Mstar Technology Ltd
Priority date: 2017-12-22
Filing date: 2017-12-22
Publication date: 2020-01-17
Anticipated expiration: 2037-12-22
Also published as: CN108145946A

Abstract

The invention discloses a plate extruder die, which comprises: the die frame comprises a first template, a second template, a third template and a fourth template, wherein the die is arranged in the die frame, the heat dissipation devices are arranged at the top and the bottom of the die frame, the adjusting device is positioned at one side of the die, the stirring device is positioned at one side of the adjusting device, the die frame comprises the first template, the second template, the third template and the fourth template, a die mounting hole is arranged in the first template, the die mounting hole penetrates through the surfaces of the two sides of the first template, the shape of the die mounting hole is matched with that of the die, the die is embedded in the die mounting hole of the first template, the first template and the second template are of a split structure, after long-time use, the inner wall of the neck ring die is seriously abraded and cannot meet the precision requirement of a product, and the neck ring die can be detached from the first template and then replaced by a new neck ring die, so that the whole set of die is prevented from being replaced, and the maintenance cost is saved.

Description

Plate extruder die

Technical Field

The invention relates to the technical field of extruder dies, in particular to a plate extruder die.

Background

The extrusion die belongs to one of forming dies, and the discharging mode is realized by extrusion action. In processing, the polymer in powder or granular form is fed into the barrel of an extruder, moves forward along a screw groove or the barrel, is gradually melted into viscous fluid, then passes through an extrusion die arranged at the end of the barrel to form a continuous body which is similar to the shape of a die of the die, and finally is cooled and shaped to form the product with the required shape.

Fig. 1 is a schematic cross-sectional view of a conventional plate extruder die. This panel extruder mould includes polylith template, polylith template mutual fixed connection forms mould frame 100, and mould frame 100 is inside to be set up runner 200, and mould frame's one end sets up mould bush 300, and mould bush 300 is linked together with runner 200.

In the processing process, the material melted into viscous fluid enters the flow channel 200, the viscous fluid material flows through the die 300 under the action of high pressure and high temperature, certain abrasion is caused to the inner wall of the die, the precision of the extruded plate product is reduced due to the inner wall of the die which is seriously abraded after long-time use, and in order to ensure the precision of the extruded product, the die of the extruder is inevitably required to be frequently replaced, so that the maintenance cost of the equipment is increased.

Disclosure of Invention

The invention provides a plate extruder die, which aims to solve the problems that the precision of an extruded product is reduced, the die needs to be frequently replaced and the equipment maintenance cost is high due to the fact that the inner wall of the die is seriously abraded after long-time use.

According to the invention, the plate extruder die comprises: the die comprises a die frame, a die, a heat dissipation device, an adjusting device and a stirring device, wherein the die, the adjusting device and the stirring device are arranged in the die frame, and the heat dissipation device is arranged at the top and the bottom of the die frame; the adjusting device is positioned on one side of the neck mold, and the stirring device is positioned on one side of the adjusting device;

the die frame comprises a first die plate, a second die plate, a third die plate and a fourth die plate, wherein one side of the first die plate is fixedly connected with one side of the second die plate, the other side of the second die plate is fixedly connected with one side of the third die plate, the other side of the third die plate is fixedly connected with one side of the fourth die plate, a die mounting hole is formed in the first die plate, the die mounting hole penetrates through the surfaces of the two sides of the first die plate, and the shape of the die mounting hole is matched with that of a die;

the neck ring mold is arranged in the neck ring mold mounting hole, a hole mold mounting hole is formed in the neck ring mold, the hole mold mounting hole penetrates through the surfaces of the two sides of the neck ring mold, a plurality of hole molds are arranged in the hole mold mounting hole, and the hole molds and the neck ring mold are of an integrated structure;

the heat dissipation device comprises a base, the base is fixedly arranged at the tops of the first template, the second template, the third template and the fourth template, a plurality of heat dissipation frames are arranged at the top of the base and movably connected with the base, a plurality of blades are arranged on each of the heat dissipation frames, and the blades are movably connected with the heat dissipation frames;

the adjusting device comprises a guide rail and a sliding block, the guide rail is arranged on one side of the first template close to the second template, a first groove is formed in one side of the second template close to the first template, the sliding block is arranged in the first groove, a third groove is formed in one side of the sliding block close to the first template, and the third groove is in sliding connection with the guide rail;

the stirring device comprises a die roller and a driving motor, the driving motor is fixedly arranged at one end, far away from the third template, of the fourth template, cavities are formed in the second template, the third template and the fourth template, the cavities are communicated with the die mounting holes, the die roller is arranged in the cavities, and the die roller is connected with the driving motor.

Furthermore, the base is far away from set up a plurality of second recesses on the one side of die carrier, the second recess is perpendicular to its length direction's cross-section and is "T" shape, the heat dissipation frame is close to base one end be provided with second recess matched with lug.

Furthermore, the second groove is provided with an opening on the surface of the base, the width of the opening is gradually reduced in the direction that the heat dissipation frame is inserted into the second groove, and the maximum width of the opening is equal to the width of a lug arranged at one end, close to the base, of the heat dissipation frame.

Further, the distance between two adjacent blades is gradually increased in the direction from the base to the die carrier.

Further, the slide is provided in plurality.

Further, a sealing piece is arranged on one side, close to the first template, of the sliding block.

Further, the cavities are symmetrically arranged relative to the center line of the first template, and the center line of the die roller is superposed with the center line of the first template.

According to the scheme, the invention provides a plate extruder die which comprises a die frame, a die, a heat dissipation device, an adjusting device and a stirring device, wherein the die, the adjusting device and the stirring device are arranged in the die frame; the die frame comprises a first die plate, a second die plate, a third die plate and a fourth die plate, one side of the first die plate is fixedly connected with one side of the second die plate, the other side of the second die plate is fixedly connected with one side of the third die plate, the other side of the third die plate is fixedly connected with one side of the fourth die plate, a die mounting hole is formed in the first die plate and penetrates through the surfaces of the two sides of the first die plate, and the shape of the die mounting hole is matched with that of a die; the neck ring mold is arranged in the neck ring mold mounting hole, a hole mold mounting hole is formed in the neck ring mold, the hole mold mounting hole penetrates through the surfaces of the two sides of the neck ring mold, a plurality of hole molds are arranged in the hole mold mounting hole, and the hole molds and the neck ring mold are of an integrated structure; the neck ring mold is embedded in the neck ring mold mounting hole of the first template and is of a split structure with the first template, after long-time use, the inner wall of the neck ring mold is seriously abraded and cannot meet the precision requirement of a product, and the neck ring mold can be detached from the first template and then replaced with a new neck ring mold, so that the whole set of mold is prevented from being replaced, and the maintenance cost is saved.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any inventive exercise.

FIG. 1 is a schematic cross-sectional view of a conventional plate extruder die;

FIG. 2 is a perspective view of a plate extruder die provided by the present invention;

FIG. 3 is a perspective view of an adjusting device of a plate extruder die provided by the invention;

FIG. 4 is a perspective view of a second die plate of the die of the plate extruder provided by the invention;

FIG. 5 is a front view of a plate extruder die provided by the present invention;

FIG. 6 is a sectional view A-A of a plate extruder die provided in the present invention;

fig. 7 is a partially enlarged view of a heat sink base of a plate extruder die according to the present invention.

Illustration of the drawings: 100-a mold frame; 200-a flow channel; 300-die opening die; 1-a mould frame; 11-a first template; 12-a second template; 121-a first groove; 13-a third template; 14-a fourth template; 111-die mounting holes; 2-a flow channel; 3-opening the die; 31-hole die mounting holes; 4-hole die; 5-a heat dissipation device; 51-a base; 52-a heat dissipation frame; 53-leaf; 54-a second groove; 6-a regulating device; 61-a guide rail; 62-a slide block; 621-a third groove; 7-a stirring device; 71-rolling the mould; 72-a drive motor; 73-cavity.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2 to 7, there are shown three-dimensional views of a plate extruder die according to the present invention, the plate extruder die includes: the die comprises a die frame 1, a die 3, a heat dissipation device 5, an adjusting device 6 and a stirring device 7, wherein the die 3, the adjusting device 6 and the stirring device 7 are arranged in the die frame 1, the heat dissipation device 5 is arranged at the top and the bottom of the die frame 1, the adjusting device 6 is positioned at one side of the die 3, and the stirring device 7 is positioned at one side of the adjusting device 6;

the mold frame comprises a first mold plate 11, a second mold plate 12, a third mold plate 13 and a fourth mold plate 14, wherein one side of the first mold plate 11 is fixedly connected with one side of the second mold plate 12, the other side of the second mold plate 12 is fixedly connected with one side of the third mold plate 13, the other side of the third mold plate 13 is fixedly connected with one side of the fourth mold plate 14, the mold plates can be connected through bolts, the four mold plates are the same in size, and sealing materials are arranged among the mold plates to prevent flash in the working process; a neck ring mold mounting hole 111 is formed in the first template 11, the neck ring mold mounting hole 111 penetrates through the surfaces of the two sides of the first template 11, the shape of the neck ring mold mounting hole 111 is matched with that of the neck ring mold 3, and the neck ring mold 3 is in interference fit with the neck ring mold mounting hole 111 to prevent flash between the neck ring mold 3 and the neck ring mold mounting hole 111; in order to facilitate installation and disassembly, the inner wall of the neck ring mold installation hole 111 has a certain inclination, the neck ring mold 3 also has a corresponding inclination, when the inner wall of the neck ring mold 3 is damaged after long-time use and needs to be replaced, the neck ring mold 3 is punched out by a tool from the smaller end of the neck ring mold installation hole 111, and the neck ring mold 3 is easy to separate from the neck ring mold installation hole 111 due to the certain inclination;

the neck ring mold 3 is arranged in a neck ring mold mounting hole 111, a hole mold mounting hole 31 is formed in the neck ring mold 3, the hole mold mounting hole 31 penetrates through the two side surfaces of the neck ring mold 3, a plurality of hole molds 4 are arranged in the hole mold mounting hole 31, the hole molds 4 and the neck ring mold 3 are of an integrated structure, the hole mold mounting hole 31 in the inner wall of the neck ring mold 3 is provided with a certain mold drawing inclination, the mold can be conveniently taken out after molding, the hole molds 4 and the neck ring mold 3 can be molded into an integrated structure and can also be respectively processed and then welded together, the hole molds 4 mainly form a hollow part of a plate product, so that the plate product presents a certain section shape instead of a complete solid plate, and the strength and toughness of the plate are improved;

the heat dissipation device 5 comprises a base 51, the base 51 is fixedly arranged at the tops of the first template 11, the second template 12, the third template 13 and the fourth template 14, a plurality of heat dissipation frames 52 are arranged at the top of the base 51, the heat dissipation frames 52 are movably connected with the base 51, a plurality of blades 53 are arranged on the plurality of heat dissipation frames 52, and the blades 53 are movably connected with the heat dissipation frames 52; in the processing process, because the material flowing through the die is the molten material heated at high temperature, the temperature of the die is probably not uniform, the part with too high temperature of the die can cause the decomposition of the molten material to cause the formed product to form poor appearance such as surface scorching and the like, the part with too low temperature of the die can cause difficult feeding, and the final product is not formed sufficiently, so the arrangement of the heat radiating device is important for adjusting the temperature uniformity of the die, the common temperature adjusting mode of the die is to use a water channel in the die, but the use of the water channel increases the processing difficulty of the die, and the external heat radiating device not only can achieve the temperature adjusting effect, but also simplifies the die structure and reduces the processing difficulty of the die.

The base 51 of the heat dissipation device 5 can be fixed on the tops of the first template 11, the second template 12, the third template 13 and the fourth template 14 in a threaded connection mode, so that the heat dissipation device 5 can be conveniently taken down from the templates, the heat dissipation frame 52 and the base 51 can also be connected in a threaded connection mode so that the heat dissipation frame 52 can be conveniently detached, and a plurality of mounting grooves can be formed in the heat dissipation frame 52 so that the blades 53 can be conveniently mounted and detached;

the adjusting device 6 comprises a guide rail 61 and a slide block 62, the guide rail 61 is arranged on one side of the first template 11 close to the second template 12, a first groove 121 is arranged on one side of the second template 12 close to the first template 11, the slide block 62 is arranged in the first groove 121, a third groove 621 is arranged on one side of the slide block 62 close to the first template 11, and the third groove 621 is in sliding connection with the guide rail 61; when the extrusion die is used, the first die plate 11 is detached from the second die plate 12, the slide block 62 is connected with the first die plate 11 in a sliding mode through the guide rail 61, the slide block 62 can move along the guide rail 61, at the moment, the slide block 62 blocks a part of the mouth die 3 and the hole die 4, the first die plate 11 is installed on the second die plate again, after the extruder works, because a part of the mouth die 3 and the hole die 4 are blocked, the blocked part does not flow through molten materials, and only the unblocked part flows through the molten materials, so that the width of an extruded product is shortened, a plurality of slide blocks 62 can be arranged on the guide rail 61, and a plurality of products with different widths can be extruded at the same time; the guide rail can be also provided with a graduated scale, so that the slide block can be conveniently moved to produce the plate with the required size;

the stirring device 7 comprises a die roller 71 and a driving motor 72, the driving motor 72 is fixedly arranged at one end of the fourth die plate 14 far away from the third die plate 13, cavities 73 are arranged in the second die plate 12, the third die plate 13 and the fourth die plate 14, the cavities 73 are communicated with the die mounting holes 111, the die roller 71 is arranged in the cavities 73, and the die roller 71 is connected with the driving motor 72. The cavity 73 is communicated with a discharge port of an extruder, a flow channel is formed between the die roller 71 and the cavity 73, and in the extrusion process, due to different material characteristics, the situation that the material is not sufficiently melted due to insufficient heating temperature can occur, so that the phenomenon of flow channel blockage and the like can be generated, so that the die roller 71 is arranged in the flow channel, the material which is not sufficiently melted can be sufficiently stirred, and the flow channel blockage or the adverse effects of a molded product and the like can be reduced.

In the working process of the plate extruder die provided by the embodiment of the invention, before the extruder is started, the extruder is started after the templates are fixed at the proper position where the slide block 62 moves along the guide rail 61; the extrusion materials enter cavities 73 in the second template 12, the third template 13 and the fourth template 14 under the action of the extruder, a driving motor 72 drives a die roller 71 to work, the die roller 71 rotates to enable the extrusion materials to be fully stirred, the extrusion materials enter a die 3 arranged in the first template through a flow channel after being fully stirred, and because the molten materials do not flow through the die 3 and a part of the hole die 4 blocked by the sliding block 62, only the molten materials flow through the unblocked part, the width of an extruded product is shortened; in the extrusion process, the base 51 of the heat dissipation device 5 is in surface contact with the first template 11, the second template 12, the third template 13 and the fourth template 14, and heat is continuously dissipated, so that the temperature of each template is homogenized; the neck ring mold is embedded in the neck ring mold mounting hole of the first template and is of a split structure with the first template, after long-time use, the inner wall of the neck ring mold is seriously abraded and cannot meet the precision requirement of a product, and the neck ring mold can be detached from the first template and then replaced with a new neck ring mold, so that the whole set of mold is prevented from being replaced, and the maintenance cost is saved.

The base 51 of the plate extruder die provided by the above embodiment is provided with the plurality of second grooves 54 on one side away from the die carrier 1, the cross section of the second groove 54 perpendicular to the length direction is "T" shaped, the heat dissipation frame 52 is close to one end of the base 51 and is provided with the convex block matched with the second groove 54, the cross section of the second groove 54 perpendicular to the length direction is set to be "T" shaped, and the convex block of the heat dissipation frame 52 close to one end of the base 51 is set to be in the shape matched with the "T", when in use, only the heat dissipation frame 52 needs to be directly inserted into the second groove 54, so that the die is convenient to mount and dismount, and the die is not easy to fall off in the using process.

The second groove 54 of the plate extruder die provided in the above embodiment is provided with an opening on the surface of the base 51, the width of the opening is gradually reduced in the direction that the heat dissipation frame 52 is inserted into the second groove 54, and the maximum width is equal to the width of the bump arranged at the end of the heat dissipation frame 52 close to the base, because the width of the bump arranged at the end of the heat dissipation frame 52 close to the base is uniform, when the heat dissipation frame 52 is inserted from the widest position of the opening to the narrowest position of the opening, the clamping force applied to the heat dissipation frame 52 is increased, and when the heat dissipation frame 52 cannot be inserted to the narrowest position of the opening any more, the heat dissipation frame 52 is firmly fixed.

The distance between two adjacent blades 53 of the plate extruder die provided by the above embodiment gradually increases in the direction from the base 51 to the die carrier 1, and as the heat dissipation frame 52 is closer to the die carrier 1, the more heat that needs to be dissipated, the closer to the die carrier 1, the smaller the distance between two adjacent blades 53 on the heat dissipation frame 52 is, and conversely, the longer the distance is from the die carrier 1, and the greater the distance between two adjacent blades 53 on the heat dissipation frame 52 is, so that not only the heat dissipation effect is enhanced, but also the material is saved.

The slide blocks 62 of the plate extruder die provided by the above embodiment are provided in plurality, when one slide block 62 is provided, the plate extruder die can only change the width of the extruded product, the controllable width range is small, and the slide blocks 62 are provided in plurality, so that the width control range is increased, and products with various widths can be extruded simultaneously.

The sealing element is arranged on one side, close to the first template 11, of the sliding block 62 of the plate extruder die provided by the embodiment, due to the fact that the good fluidity of the molten material is achieved, certain errors exist in the die production process, and gaps are avoided after the die is assembled, the molten material is likely to generate a flash phenomenon, the sealing element is arranged on one side of the sliding block 62 and one side of the first template 11, and flash can be well prevented.

The cavity 73 of the plate extruder die provided by the above embodiment is symmetrically arranged relative to the center line of the first die plate 11, the center line of the die roller 71 is overlapped with the center line of the first die plate 11, and after the extruded material enters the cavity 73, the extruded material can be uniformly stirred due to the fact that the center lines of the die roller 71, the cavity 73 and the first die plate 11 are all overlapped, so that the problem that the extruded material is not uniformly distributed due to the fact that the properties of the extruded material are different at each part is avoided.

The above embodiments of the present application do not limit the scope of the present application.

Claims

1. A sheet extruder die, comprising: the die comprises a die frame (1), a die (3), a heat dissipation device (5), an adjusting device (6) and a stirring device (7), wherein the die (3), the adjusting device (6) and the stirring device (7) are arranged in the die frame (1), the heat dissipation device (5) is arranged at the top and the bottom of the die frame (1), the adjusting device (6) is positioned at one side of the die (3), and the stirring device (7) is positioned at one side of the adjusting device (6);

the die carrier (1) comprises a first die plate (11), a second die plate (12), a third die plate (13) and a fourth die plate (14), one side of the first die plate (11) is fixedly connected with one side of the second die plate (12), the other side of the second die plate (12) is fixedly connected with one side of the third die plate (13), the other side of the third die plate (13) is fixedly connected with one side of the fourth die plate (14), a die mounting hole (111) is formed in the first die plate (11), the die mounting hole (111) penetrates through the two side surfaces of the first die plate (11), the shape of the die mounting hole (111) is matched with the shape of the die (3), the inner wall of the die mounting hole (111) has a certain inclination, and the die (3) also has a corresponding inclination;

the neck ring mold (3) is arranged in the neck ring mold mounting hole (111), a hole mold mounting hole (31) is formed in the neck ring mold (3), the hole mold mounting hole (31) penetrates through the surfaces of the two sides of the neck ring mold (3), a plurality of hole molds (4) are arranged in the hole mold mounting hole (31), and the hole molds (4) and the neck ring mold (3) are of an integrated structure;

the heat dissipation device (5) comprises a base (51), the base (51) is fixedly arranged at the tops of the first template (11), the second template (12), the third template (13) and the fourth template (14), a plurality of heat dissipation frames (52) are arranged at the top of the base (51), the heat dissipation frames (52) are movably connected with the base (51), a plurality of blades (53) are arranged on each heat dissipation frame (52), and the blades (53) are movably connected with the heat dissipation frames (52);

a plurality of second grooves (54) are formed in one side, away from the die carrier (1), of the base (51), the section, perpendicular to the length direction of each second groove (54), of each second groove is T-shaped, and a convex block matched with each second groove (54) is arranged at one end, close to the base (51), of the heat dissipation frame (52);

the second groove (54) is provided with an opening on the surface of the base (51), the width of the opening is gradually reduced in the direction that the heat dissipation frame (52) is inserted into the second groove (54), and the maximum width of the opening is equal to the width of a bump arranged at one end, close to the base (51), of the heat dissipation frame (52);

the adjusting device (6) comprises a guide rail (61) and a sliding block (62), the guide rail (61) is arranged on one side, close to the second template (12), of the first template (11), a first groove (121) is formed in one side, close to the first template (11), of the second template (12), the sliding block (62) is arranged in the first groove (121), a third groove (621) is formed in one side, close to the first template (11), of the sliding block (62), and the third groove (621) is in sliding connection with the guide rail (61);

the stirring device (7) comprises a die roller (71) and a driving motor (72), the driving motor (72) is fixedly arranged at one end, far away from the third die plate (13), of the fourth die plate (14), a cavity (73) is formed in the second die plate (12), the third die plate (13) and the fourth die plate (14), the cavity (73) is communicated with the die mounting hole (111), the die roller (71) is arranged in the cavity (73), and the die roller (71) is connected with the driving motor (72).

2. A sheet extruder die according to claim 1, characterized in that the distance between two adjacent blades (53) is gradually increased in the direction from the base (51) to the die frame (1).

3. A sheet extruder die according to claim 1, characterized in that the slide (62) is provided in plurality.

4. A sheet extruder die according to claim 1, characterized in that the side of the slide (62) close to the first die plate (11) is provided with a seal.

5. A panel extruder die according to any one of claims 1-4, wherein said cavities (73) are symmetrically arranged with respect to the centre line of said first die plate (11), the centre line of said die roller (71) coinciding with the centre line of said first die plate (11).