CN222904801U - Granulating mold, granulating mold device and thermoplastic elastomer granulating system - Google Patents

Abstract

The present application provides a granulation die, a granulation die device and a thermoplastic elastomer granulation system, wherein the granulation die is applied to the thermoplastic elastomer granulation system, wherein the thermoplastic elastomer granulation system comprises: a twin-screw extruder and an underwater pelletizer, wherein the granulation die is assembled between the twin-screw extruder and the underwater pelletizer, and wherein the granulation die comprises: a die body, and a plurality of die holes, wherein the plurality of die holes penetrate the two side surfaces of the die body, and at least two die holes have different shapes. The granulation die provided in the present application comprises a plurality of die holes, and at least two die holes have different shapes, so that thermoplastic elastomer particles of different shapes can be directly produced, thereby simplifying the production steps and improving production efficiency.

Description

Granulating mold, granulating mold device and thermoplastic elastomer granulating system

Technical Field

The application belongs to the technical field of high polymer materials, and particularly relates to a granulating die, a granulating die device and a thermoplastic elastomer granulating system.

Background

The thermoplastic elastomer is a high molecular material with both plastic and rubber characteristics, and shows high elasticity of rubber at normal temperature, and can be plasticized and molded at high temperature. The material has the characteristics of good rebound resilience, good skid resistance and the like, can recover automatically and resist the surface skid in the use process, and is a key material of a base material for a movable field. However, the manufacturing of the base material of the movable field needs to adopt irregular thermoplastic elastomer colloidal particles, and the conventional irregular thermoplastic elastomer granulating device still has the problems of complex granulating steps and low efficiency in the technology. Therefore, how to improve the production efficiency of thermoplastic elastomer particles is a technical problem to be solved.

Disclosure of utility model

The application adopts the technical scheme that the application provides a granulating mould which is applied to a thermoplastic elastomer granulating system, wherein the thermoplastic elastomer granulating system comprises a double-screw extruder and an underwater granulator, the granulating mould is assembled between the extruder and the underwater granulator, and comprises a mould body and

The die holes penetrate through the two side surfaces of the die body, and the shapes of at least two die holes are different.

In one possible implementation, the size of the die hole is 1-4 mm.

In one possible implementation, the die hole shape includes irregular triangles, quadrilateral shapes, pentagons, hexagons, closed curves, and curved polygons.

Please provide a second aspect to provide a granulating mold device, comprising the granulating mold, a mold movable cover plate, a mold positioning plate and a mold positioning bolt, wherein the granulating mold, the mold movable cover plate and the mold positioning plate are fixedly connected through the mold positioning bolt in sequence.

In one possible implementation, the granulating die device further comprises an upper die heating plate and a lower die heating plate, wherein the upper die heating plate and the lower die heating plate are respectively assembled at the upper end and the lower end of the granulating die.

In one possible implementation, the granulating die device further comprises a temperature-sensing thermocouple, wherein the temperature-sensing thermocouple is assembled in the granulating die and the die movable cover plate.

A third aspect of the present application provides a thermoplastic elastomer pelletising system characterised by comprising a twin screw extruder, an underwater pelletizer and a pelletising die arrangement as described above, the pelletising die arrangement being fitted between the extruder and the underwater pelletizer.

In one possible implementation, the underwater pelletizer comprises a driving device, an underwater cutter and a cooling water pipe, wherein the cooling water pipe is vertically connected with the underwater cutter connecting flange into a whole and is connected with an external water circulation system.

In one possible implementation manner, the water temperature flowing through the cooling water pipe is 5-15 ℃.

In one possible implementation, the double-screw extruder comprises a double-screw extruder body, a melt pump and a discharge valve, wherein the double-screw extruder body, the melt pump and the discharge valve are fixedly connected by bolts.

Technical effects

The granulating mould provided by the application comprises a plurality of mould holes, and the shapes of at least two mould holes are different, so that thermoplastic elastomers with different shapes can be produced, the extruder can be used for carrying out plasticity on the products extruded by the extruder to obtain extrudates with various shapes, and the extruder can be cut and cooled in time by matching with an underwater pelletizer to obtain the granular thermoplastic elastomer. The granulating mould provided by the application can reduce the use of a bracing tractor, a cutting machine, a cooling water tank and a crusher, reduce the production cost, simplify the production steps and improve the production efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a granulating mold according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a thermoplastic elastomer pelletizing system according to an embodiment of the present application;

fig. 3 is a schematic view of an installation structure of a granulating mold apparatus according to an embodiment of the present application;

The reference numerals in the drawings:

The device comprises a double-screw extruder 1, an underwater pelletizer 2, a pelleting die device 3, a pelleting die 4, a discharge valve 5, a melt pump 6, a cooling water pipe 7, an underwater cutter 8, a driving device 9, a connecting flange 10, a die movable cover plate 11, a die positioning plate-12, a die upper heating plate 13, a die positioning bolt 14, a die lower heating plate 15, a temperature sensing thermocouple 16 and a die hole 17.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. 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 application.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The thermoplastic elastomer is a high molecular material with both plastic and rubber characteristics, and shows high elasticity of rubber at normal temperature, and can be plasticized and molded at high temperature. The material has the characteristics of good rebound resilience, good slip resistance and the like, and can recover and resist the surface slip during the use process. However, the existing thermoplastic elastomer granulating device still has the problems of complex granulating steps and low efficiency in the technology. Therefore, how to improve the production efficiency of thermoplastic elastomer particles is a technical problem to be solved.

In order to solve the problems, the application provides a granulating die which comprises a plurality of die holes, and at least two die holes have different shapes, so that thermoplastic elastomers with different shapes can be produced, the extruder can be used for carrying out plasticity on the products extruded by the extruder to obtain extrudates with various shapes, and the extruder can be cut and cooled in time by matching with an underwater pelletizer to obtain the granular thermoplastic elastomer. The granulating mould provided by the application can reduce the use of a bracing tractor, a cutting machine and a crusher, reduce the production cost, simplify the production steps and improve the production efficiency.

In order to illustrate the technical scheme of the application, the following description is given by specific examples.

Referring to fig. 1, a schematic structural diagram of a granulating die 4 includes, by way of example and not limitation, a die body, and a plurality of die holes 17, the plurality of die holes 17 extending through both side surfaces of the die body, at least two die holes 17 having different shapes.

The granulating die 4 is applied to a thermoplastic elastomer granulating system, and referring to fig. 2, the thermoplastic elastomer granulating system comprises a double-screw extruder 1 and an underwater pelletizer 2, and the granulating die 4 is assembled between the double-screw extruder 1 and the underwater pelletizer 2.

The pelletizing die 4 in this solution is designed based on the process requirements of the thermoplastic elastomer pelletizing system. The thermoplastic elastomer is heated, mixed and extruded in an extruder to form a continuous stream. Further, the material flow through the pelletizing die 4 is constrained and shaped by the die orifice 17 to form extrudate of a particular shape. Subsequently, these extrudates are cut into pellets by the underwater pelletizer 2 and cooled to form a solidified shape.

The granulation die provided by the application can realize the following effects.

Firstly, the granulating mould provided by the application can realize the diversified production of thermoplastic elastomer particles. By arranging the die holes 17 with different shapes on the same die, the granulating die can simultaneously produce thermoplastic elastomer particles with various shapes, thereby meeting the demands on the particles with different shapes in the market.

Secondly, the granulating mould provided by the application can reduce the production cost. The traditional granulation process generally requires bracing, and adopts a bracing tractor, a cutting machine and a crusher, so that thermoplastic elastomer particles with various shapes can be produced by using a plurality of machines in a matched mode, the equipment is complex, and the maintenance cost is high. The granulating mould in the scheme can realize the rapid production of thermoplastic elastomer particles with different shapes on one device, so that the device cost is reduced.

Thirdly, the granulating mould provided by the application can simplify the production steps and improve the production efficiency. The traditional thermoplastic elastomer granulation process may require the cooperation of a plurality of devices such as a bracing tractor, a cutting machine, a crusher and the like, and the production steps are complex. The combination of the granulating die and the underwater granulator in the scheme simplifies the production steps, so that the production process is more continuous and efficient.

In summary, the present application realizes the diversified production of thermoplastic elastomer particles by designing the granulation die 4 having the plurality of die holes 17 of different shapes, reduces the production cost, improves the production efficiency, and simplifies the production steps.

In one possible implementation, the size of the die hole 17 is 1-4 mm.

It should be noted that the die holes 17 are not easily too large or too small, too small die holes 17 may cause material to pass through, which affects the production efficiency, too large die holes 17 may cause insufficient compaction of the pellets, too large die holes 17 may cause larger diameter of the extrudate, and subsequent cooling effect may be poor, which may result in the failure of the pellet shape to solidify. Under appropriate process conditions, the size of the produced particles can be precisely controlled by sizing the die orifice 17 and ensuring smooth extrusion of the material.

In one possible implementation, the die holes 17 include irregular triangles, quadrilaterals, pentagons, hexagons, and curvilinear polygons.

Referring to fig. 1, in the present embodiment, the mold hole includes a triangular mold hole, a quadrangular mold hole, a pentagonal mold hole, a hexagonal mold hole, and a curved polygonal mold hole.

It should be noted that the varied shape of the die holes can produce particles of different shapes, and that the particles of different shapes are not simply in point-to-point contact but form more complex and varied contact patterns. These contact points may include point-to-surface contact, surface-to-surface contact, multi-point contact, and the like, thereby increasing the contact stability between particles and the strength of the overall structure. And the die holes with various shapes can be flexibly adjusted according to different product requirements and process conditions, so that the die design is more targeted and practical.

The embodiment of the application also provides a granulating mould device 3, which comprises the granulating mould 4, the mould movable cover plate 11, the mould positioning plate 12 and the mould positioning bolts 14, wherein the granulating mould 4, the mould movable cover plate 11 and the mould positioning plate 12 are fixedly connected through the mould positioning bolts 14 in sequence.

It should be noted that, by designing the granulation die 4, the die movable cover plate 11, and the die positioning plate 12 as detachable modules and using the die positioning bolts 14 for fixing connection, the entire device can maintain a stable structure during operation.

In addition, as the components are detachably connected, the device can be conveniently adjusted or optimized. For example, the die holes 17 of different shapes may be replaced according to different production requirements. The modularized design not only improves the production efficiency, but also facilitates the maintenance and replacement of equipment.

At the same time, the combined use of the mold locating plate 12 and the mold locating bolts 14 ensures accurate positioning of the individual components during assembly. The accurate positioning is beneficial to reducing errors, improving the working precision of the granulating mould, and further ensuring the forming quality and the size consistency of the granules.

In one possible implementation, referring to fig. 3, the granulating die apparatus 3 further includes an upper die heating plate 13 and a lower die heating plate 15, and the upper die heating plate 13 and the lower die heating plate 15 are respectively assembled at the upper and lower ends of the granulating die 4.

It should be noted that the heating plate can effectively control the temperature inside the granulating mold 4 to reach the optimal temperature range for molding the material, which is important for ensuring the molten state, fluidity and final molding quality of the particles of the material.

In one possible implementation, the granulation die device 3 further comprises a temperature-sensitive thermocouple 16, the temperature-sensitive thermocouple 16 being fitted in the granulation die 4 and the die movable cover plate 11.

In the granulating die device 3, the temperature-sensing thermocouple 16 is assembled in the granulating die 4 and the die movable cover plate 11, so that the temperatures in the granulating die 4 and the die movable cover plate 11 can be monitored in real time, and the materials are ensured to be kept in a proper temperature range in the processing process. This is particularly important for the processing of heat sensitive materials such as plastics and helps to prevent material quality degradation or processing failure due to excessive or insufficient temperatures.

In one possible implementation manner, through the cooperation with the heating plate, the temperature-sensing thermocouple 16 can accurately adjust the heating power of the heating plate according to the temperature data monitored in real time, ensure the temperature of each part in the die to be evenly distributed, optimize the heating effect and improve the product quality. Meanwhile, the accurate temperature control can reduce unnecessary energy waste, reduce production cost and also contribute to reducing environmental pollution caused by small molecular harmful gas generated by plastic decomposition due to high temperature.

The embodiment of the application also provides a thermoplastic elastomer granulating system, referring to fig. 2, comprising a double-screw extruder 1, an underwater pelletizer 2 and the granulating die device 3 as described above, wherein the granulating die device 3 is assembled between the double-screw extruder 1 and the underwater pelletizer 2.

The thermoplastic elastomer pelletization system is composed of a twin-screw extruder 1, an underwater pelletizer 2 and a pelletization die device 3. In use, the thermoplastic elastomer is heated, mixed and extruded in an extruder to form a continuous stream. Further, the material flow through the pelletizing die 4 is constrained and shaped by the die orifice 17 to form extrudate of a particular shape. Subsequently, these extrudates are cut into pellets by the underwater pelletizer 2 and cooled to form a solidified shape.

The thermoplastic elastomer granulating system provided by the application can be used for simultaneously producing thermoplastic elastomer particles with various shapes, so that the requirements of the market on the particles with different shapes are met.

Compared with the complicated traditional granulation process, the thermoplastic elastomer granulation system in the scheme can realize the production of thermoplastic elastomer particles with different shapes by using the double-screw extruder 1, the underwater granulator 2 and the granulation die device 3, reduces the equipment cost, simplifies the production steps and improves the production efficiency.

In one possible implementation, the underwater pelletizer 2 comprises a driving device 9, an underwater cutter 8 and a cooling water pipe 7, wherein the cooling water pipe 7 is vertically connected with a connecting flange 10 into a whole and is connected with an external water circulation system.

The twin-screw extruder 1 is responsible for heating and melting the thermoplastic elastomer raw material as the front end of the whole system, and forms a continuous material flow through a strong extrusion force. The material flow through the pelletizing die 4 is constrained and shaped by the die orifice 17 to form extrudate of a particular shape.

Next, these preliminary shaped extrudates are fed into the underwater pelletizer 2 for cutting and cooling. The underwater pelletizer 2 includes a drive device 9, an underwater cutter 8, and a cooling water pipe 7. The driving device 9 provides power for the underwater cutting knife 8 to ensure stable and efficient cutting process, the underwater cutting knife 8 is responsible for cutting particles into more uniform and smaller sizes, and the cooling water pipe 7 rapidly reduces the temperature of the particles by spraying cooling water to a cutting area to prevent the particles from deforming or adhering due to overheating.

It should be noted that, the underwater pelletizer 2 not only ensures the molding and uniformity of the pellets, but also effectively eliminates and takes away the scraps generated in the cutting process through the scouring action of water flow, thereby ensuring the quality of the pellets. Meanwhile, the use of cooling water also greatly improves the production efficiency, so that the granules have good cooling effect when leaving the granulator, and the time and cost of subsequent treatment are reduced.

In one possible implementation manner, the water temperature flowing through the cooling water pipe 7 is 5-15 ℃.

The cooling water can effectively reduce the temperature of the thermoplastic elastomer particles extruded from the granulating die apparatus 3. Since thermoplastic elastomers need to undergo a high temperature molten state during processing, particles at high temperatures are prone to deformation or blocking when in contact with each other, and therefore low temperature cooling water is required to rapidly reduce the particle temperature below the deformation and blocking threshold, thereby ensuring particle integrity and independence. And moreover, the heat on the surfaces of the particles can be rapidly taken away by proper cooling water temperature, so that the particles reach the cooling requirement in a short time, the cooling time is shortened, and the production efficiency of the whole granulating system is improved.

In one possible implementation, the twin-screw extruder 1 includes a twin-screw extruder body, a melt pump 6, and a discharge valve 5, and the twin-screw extruder body, the melt pump 6, and the discharge valve 5 are fixedly connected by bolts.

It should be noted that twin screw extruders have two intermeshing screws, which provide more powerful material conveying and mixing capabilities. The design ensures that the materials can be sheared and mixed more uniformly in the extrusion process, thereby improving the plasticizing effect of the materials and the quality of products.

Meanwhile, the melt pump 6 can ensure that the material keeps stable pressure and flow in the extrusion process, is beneficial to reducing extrusion instability caused by pressure fluctuation, and improves the dimensional accuracy and consistency of products.

And, the use of the melt pump 6 and the discharge valve 5 in combination enables the entire extrusion process to be more controllable. By adjusting the rotation speed of the melt pump 6 and the opening of the discharge valve 5, the extrusion speed and the output can be precisely controlled, and different production requirements can be met.

It will be apparent to those skilled in the art that the above-described functional units are merely illustrated in terms of division for convenience and brevity, and that in practical applications, the above-described functional units and modules may be allocated to different functional units or modules according to needs, i.e., the internal structure of the apparatus may be divided into different functional units or modules to perform all or part of the above-described functions. The functional units in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units are also only for distinguishing from each other, and are not used to limit the protection scope of the present application. The specific working process of the units in the above system may refer to the corresponding process in the foregoing method embodiment, which is not described herein again.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

The foregoing embodiments are merely illustrative of the technical solutions of the present application, and not restrictive, and although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that modifications may still be made to the technical solutions described in the foregoing embodiments or equivalent substitutions of some technical features thereof, and that such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A pelletizing die for use in a thermoplastic elastomer pelletizing system, the thermoplastic elastomer pelletizing system comprising: the granulating die is arranged between the double-screw extruder and the underwater granulator and is characterized by comprising a die body and a plurality of die holes, wherein the die holes penetrate through the surfaces of two sides of the die body, and at least two die holes are different in shape.

2. The granulation die as claimed in claim 1, wherein the die hole has a size of 1 to 4mm.

3. The granulation die as set forth in claim 1, wherein said die hole shape includes irregular quadrangles, pentagons, hexagons, triangles and curved polygons.

4. A granulating mold device, comprising the granulating mold according to claim 1, and a mold movable cover plate, a mold positioning plate and a mold positioning bolt, wherein the granulating mold, the mold movable cover plate and the mold positioning plate are fixedly connected through the mold positioning bolt in sequence.

5. The granulating die apparatus as recited in claim 4, further comprising an upper die heating plate and a lower die heating plate, the upper die heating plate and the lower die heating plate being fitted to the upper and lower ends of the granulating die, respectively.

6. The granulating mold apparatus as recited in claim 4 or 5, further comprising a temperature-sensitive thermocouple fitted in the granulating mold and the mold-moving cover plate.

7. A thermoplastic elastomer pelleting system, characterized by comprising a twin-screw extruder, an underwater pelletizer and the pelleting die device as claimed in any one of claims 4 to 6, wherein the pelleting die device is assembled between the extruder and the underwater pelletizer.

8. The thermoplastic elastomer pelletizing system as claimed in claim 7, wherein the underwater pelletizer includes a cooling water pipe, an underwater cutter, a driving device and a connecting flange.

9. The system of claim 8, wherein the temperature of water flowing through the cooling water pipe is 5-15 ℃.

10. The thermoplastic elastomer granulating system according to any one of claims 7 to 9, wherein the twin-screw extruder comprises a twin-screw extruder body, a melt pump and a discharge valve, and the twin-screw extruder body, the melt pump and the discharge valve are fixedly connected by bolts.