CN114851513B - Hollow tube forming device - Google Patents
Hollow tube forming device Download PDFInfo
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- CN114851513B CN114851513B CN202210480959.4A CN202210480959A CN114851513B CN 114851513 B CN114851513 B CN 114851513B CN 202210480959 A CN202210480959 A CN 202210480959A CN 114851513 B CN114851513 B CN 114851513B
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- hollow tube
- die plate
- forming device
- tube forming
- guide cone
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- 239000000463 material Substances 0.000 claims abstract description 93
- 238000001816 cooling Methods 0.000 claims abstract description 44
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000001125 extrusion Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 9
- 239000000306 component Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000003507 refrigerant Substances 0.000 description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000000429 assembly Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/865—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
- B29C48/87—Cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The application provides a hollow tube forming device, which comprises a fixed seat with a cavity and a die plate connected with one end of the fixed seat, wherein the fixed seat is provided with a feed inlet, and the die plate is provided with a discharge outlet; the fixing seat comprises a cooling channel, a guide cone which is arranged in the cavity in a removable way, and a material conveying channel which is defined by the outer wall of the guide cone and the inner wall of the fixing seat, wherein the material conveying channel is respectively communicated with the feed inlet and the discharge outlet; the cooling channel surrounds the outer side of the material conveying channel so as to cool the materials sequentially flowing through the material inlet, the material conveying channel and the material outlet; the material can be uniformly conveyed to the discharge hole through the guide of the guide cone; the cooling channel surrounds the outside in material passageway, can cool off the material for the temperature of the material that is in the molten state reduces, and the shaping of hollow tube of being convenient for, and avoids the hollow tube to take place the shrink because of the hollow tube temperature dip that the contact air leads to when discharging from the discharge gate as far as possible in hollow tube shaping in-process.
Description
Technical Field
The application relates to the technical field of hollow tube manufacturing equipment, in particular to a hollow tube forming device
Background
In daily life, the hollow pipe has the advantages of light weight, good anti-seismic effect and the like, so that the hollow pipe is used more and more frequently in building filling and liquid conveying, and at present, the hollow pipe is classified into paper pipes, metal pipes, plastic pipes and the like; the plastic hollow tube occupies a place on the market due to the characteristics of low manufacturing cost and convenient processing.
The processing shaping of hollow tube adopts the mode that carries out the hollow tube through mould extrusion reforming after with the raw materials hot melt basically, application number CN201910291192.9 discloses a double-deck extrusion die for rubber tube, it extrudes the material through being provided with two extrusion chamber, and realize the shaping of rubber tube through the cavity of blowing between two extrusion chamber, however, prior art is when carrying out the preparation of hollow tube, do not consider the fashioned influence of cooling hollow tube, it is difficult to the fashioned in processing equipment to probably lead to the material of temperature too high, and at the shaping in-process of hollow tube, when being discharged by the discharge gate, because of contacting the air, the temperature suddenly reduces, the condition of shrinkage deformation appears easily, and at the fashioned in-process of hollow tube, the hollow tube quantity of once processing preparation is less, and not split the material, not only influence the efficiency of hollow tube output, still make the material distribution inhomogeneous, the quality of hollow tube is uneven.
Accordingly, there is a need for further improvements in the art.
Disclosure of Invention
The application provides a hollow tube forming device to solve at least one technical problem among the technical problems.
The technical scheme adopted by the application is as follows:
the application provides a hollow tube forming device, which comprises a fixed seat with a cavity and a die plate connected with one end of the fixed seat, wherein the fixed seat is provided with a feed inlet, and the die plate is provided with a discharge outlet; the fixing seat comprises a cooling channel, a guide cone which is arranged in the cavity in a removable way, and a material conveying channel which is defined by the outer wall of the guide cone and the inner wall of the fixing seat, wherein the material conveying channel is respectively communicated with the feed inlet and the discharge outlet; the cooling channel surrounds the outside of the material conveying channel so as to cool the materials which sequentially flow through the material inlet, the material conveying channel and the material outlet.
As a preferred embodiment of the present application, the cooling cavity is provided inside the guide cone, and the diameter of the end of the guide cone close to the die plate is larger than the diameter of the end of the guide cone far away from the die plate.
As a preferred embodiment of the present application, the hollow tube forming device further comprises an inner core assembly disposed in the discharge port, the inner core assembly protruding from the outer end surface of the die plate; the inner core assembly comprises a core column and an outer cylinder sleeved on the core column, and a gap for material extrusion molding is formed between the outer cylinder and the core column.
As a preferred embodiment of this application, the mould dish includes annular air flue and the sub-air flue that is linked together with annular air flue, and the air inlet has been seted up to annular air flue, the stem is inside seted up with the gas outlet that sub-air flue is linked together to make gas can flow through air inlet, annular air flue and sub-air flue in proper order, and follow the gas outlet and discharge.
As a preferred implementation mode of the die plate, the number of the discharge holes is multiple, the plurality of discharge holes are distributed in an annular mode outwards from the center of the die plate, a plurality of layers of discharge areas are formed, and the discharge holes of two adjacent discharge areas are distributed in a staggered mode.
As a preferred embodiment of the present application, the diameter of the inner wall of the fixing seat increases from the feeding end to the discharging end in order to make the cross section of the fixing seat be horn-shaped and adapt to the shape of the diversion cone.
As a preferred embodiment of the present application, the outer side wall of the guide cone is parallel to the inner wall of the fixing seat.
As a preferred embodiment of the present application, the hollow tube forming device further comprises a heating assembly wound around the outer wall of the fixing base.
As a preferred embodiment of the present application, a first connecting hole is provided at one end of the flow guiding cone, which is close to the die plate, and a first matching hole is provided on the die plate; the hollow tube forming device further comprises a first fastening piece, and the first fastening piece penetrates through the first connecting hole and the first matching hole respectively to achieve connection between the guide cone and the die plate.
As a preferred embodiment of the present application, the fixing base is provided with a second connecting hole, and the die plate is provided with a second matching hole; the hollow tube forming device further comprises a second fastening piece, and the second fastening piece penetrates through the second connecting hole and the second matching hole respectively to achieve connection between the fixing base and the die plate.
Due to the adoption of the technical scheme, the technical effects obtained by the application are as follows:
1. the utility model provides a hollow tube forming device sets up the water conservancy diversion awl in the cavity of fixing base, forms the material conveying passageway through the lateral wall of water conservancy diversion awl and the inner wall of fixing base, and the material conveying passageway can be based on the toper structure of water conservancy diversion awl and be annular equipartition, through the guide of water conservancy diversion awl for the material can be transported to the discharge gate uniformly, avoids the uneven problem of hollow tube quality that the uneven material distribution caused to the maximum extent; the cooling channel surrounds in the outside of material passageway, can flow through in proper order the feed inlet the material conveying passageway with the material of discharge gate cools off for the temperature of the material that is in molten state reduces, and the shaping of hollow tube of being convenient for is avoided when discharging from the discharge gate as far as possible, because of the hollow tube temperature dip that the material direct contact air leads to makes the condition that takes place the shrink in the hollow tube shaping process appear.
2. As a preferred implementation mode of the hollow tube forming device, the cooling cavity is arranged in the guide cone, and the material in the material conveying channel is further cooled through the cooperation of the cooling cavity and the cooling channel, so that the cooling effect of the hollow tube forming device is improved; in addition, because the material is transported along the material conveying channel of water conservancy diversion awl and fixing base inner wall, set up the cooling chamber in the inside of water conservancy diversion awl, can make the material abundant with the outer wall contact of water conservancy diversion awl, and then improve the heat exchange efficiency between material and the cooling chamber, promote the cooling effect.
3. As a preferred embodiment of the present application, the discharge port is provided with an inner core assembly, and the material is extruded and molded through a gap formed by the core column and the outer cylinder of the inner core assembly; and, the mould dish include annular air flue and with the sub-air flue that annular air flue is linked together, the inside gas outlet that is linked together with the sub-air flue of having seted up of stem, gaseous can flow through in proper order the air inlet annular air flue with follow the sub-air flue, and follow the gas outlet is discharged, and exhaust gas can pack stem and urceolus extruded hollow tube, when making the hollow tube fuller, can also cool down the hollow tube through gaseous flow, further improves the quality of hollow tube.
4. As a preferred embodiment of the hollow tube forming device, a plurality of discharge holes are formed, so that the discharge efficiency of the hollow tube forming device is higher; and a plurality of discharge ports are outwards annular by the mould center and lay, are formed with multilayer discharge area, and the discharge gate of two adjacent discharge areas is crisscross to be distributed, can make the material distribute more evenly when transporting to the discharge gate, guarantees to the maximum extent that the quality of each hollow tube that the discharge gate was fashioned is the same.
5. As a preferred implementation mode of the hollow tube forming device, the heating assembly is arranged on the outer wall of the fixing seat in a winding manner, materials in the material conveying channel can be heated, and the temperature of the materials is maintained in a temperature range required by the hollow tube forming through the mutual cooperation between the heating assembly and the cooling channel as well as between the heating assembly and the cooling cavity, so that the materials are in an optimal processing environment, and the manufacturing efficiency of the hollow tube and the quality of the hollow tube are improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the present application and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic view of a hollow tube forming assembly according to the present application;
FIG. 2 is a schematic view of another hollow tube forming assembly provided herein;
FIG. 3 is a schematic structural view of a core assembly provided herein;
fig. 4 is a schematic structural view of still another hollow tube forming assembly provided herein.
Reference numerals:
100 fixing seats, 101 feeding holes, 102 cooling channels, 103 diversion cones, 1031 cooling cavities, 104 material conveying channels, 105 heating assemblies, 1051 heating ends, 106 second matching holes and 107 connecting parts;
200 mould plates, 201 discharge holes, 202 inner core components, 2021 core columns, 2022 outer cylinders, 2023 gaps, 2024 air outlets and 2025 blind holes; 203 annular air passages, 2031 air inlets, 204 sub-air passages, 205 first matching holes and 206 second connecting holes.
Detailed Description
In order to more clearly illustrate the general concepts of the present application, a detailed description is provided below by way of example in connection with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.
In addition, in the description of the present application, it should be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
As shown in fig. 1 and 2, the present application provides a hollow tube forming device, which may include, for example, a fixing seat 100 having a cavity and a die plate 200 connected to one end of the fixing seat 100, where the fixing seat 100 is provided with a feed inlet 101, and the die plate 200 is provided with a discharge outlet 201; the fixing seat 100 may include a cooling channel 102, a guide cone 103 disposed in the cavity in a removable manner, and a material conveying channel 104 defined by an outer wall of the guide cone 103 and an inner wall of the fixing seat 100, where the material conveying channel 104 is respectively communicated with the material inlet 101 and the material outlet 201; the cooling channel 102 may surround the outer side of the material conveying channel 104, so as to cool the material sequentially flowing through the material inlet 101, the material conveying channel 104 and the material outlet 201.
Further, a cooling cavity 1031 is provided in the guide cone 103, and the cooling cavity 1031 is matched with the cooling channel 102 to further cool the material in the material conveying channel 104, so as to improve the cooling effect of the hollow tube forming device; and the diameter of the end of the guide cone 103 close to the die plate 200 is larger than the diameter of the end of the guide cone 103 far away from the die plate 200.
Wherein, the cooling channel 102 and the cooling cavity 1031 may be provided with a refrigerant (not shown in the figure), and the refrigerant may be water, a cooling liquid, etc., so that the temperature of the material in the material conveying channel 104 is reduced by the flow of the liquid while the cooling cost is reduced; in addition, as the materials are transported along the material conveying channel 104 formed by the guide cone 103 and the inner wall of the fixing seat 100, the cooling cavity 1031 is arranged in the guide cone 103, so that the materials can be fully contacted with the outer wall of the guide cone 103, the heat exchange speed between the materials and the cooling cavity 1031 is further improved, and the cooling effect is enhanced.
As shown in fig. 1, as an alternative embodiment of the present application, the cooling channel 102 may be provided with a first inlet (not labeled in the figure) and a first outlet (not labeled in the figure), where the position of the first inlet is lower than that of the first outlet; the cooling chamber 1031 may also be provided with a second inlet (not labeled in the figure) and a second outlet (not labeled in the figure), wherein the position of the second inlet is lower than that of the second outlet; the hollow tube forming device may further include a first liquid inlet pump (not shown) and a second liquid inlet pump (not shown) respectively connected to the first inlet and the second inlet, the cooling medium is provided to the cooling chamber 1031 and the cooling channel 102 by the first liquid inlet pump and the second liquid inlet pump, and the refrigerant is introduced into and discharged from the cooling channel 102 and the cooling chamber 1031 by the positional relationship between the first inlet and the first outlet, and between the second inlet and the second outlet.
Further, as the time required by the low-inlet and high-outlet of the refrigerant is longer, the refrigerant and the materials can fully exchange heat, and the materials can be fully cooled; in addition, as the liquid temperature is higher, the density is lower, the mode of low inlet and outlet is adopted, the part with higher refrigerant temperature is always higher than the part with lower temperature, so that the flow of the liquid tends to be stable, and if the setting mode of high inlet and outlet is adopted, the liquid is enabled to perform heat exchange too fast, the waste of resources is caused, and the part with higher refrigerant temperature is enabled to generate rising trend to the part with lower temperature, so that turbulence phenomenon is caused, and the effective heat exchange is not facilitated.
As shown in fig. 1 and 2, as a preferred embodiment of the present application, the hollow tube forming device may further include a core assembly 202 disposed in the outlet 201, where the core assembly 202 protrudes from an outer end surface of the die plate 200; the inner core assembly 202 comprises a core column 2021 and an outer cylinder 2022 sleeved on the core column 2021, and a gap 2023 for extrusion molding of materials is formed between the outer cylinder 2022 and the core column 2021.
As shown in fig. 2 and 3, further, the mold 200 may include an annular air passage 203 and a sub air passage 204 communicated with the annular air passage 203, the annular air passage 203 is provided with an air inlet 2031, and the inside of the stem 2021 is provided with an air outlet 2024 communicated with the sub air passage 204; the inner core assembly 202 may further include a blind hole 2025 disposed on a side wall of the inner core assembly 202 and in communication with the sub-air passage 204, where an end of the blind hole 2025 away from the sub-air passage 204 is in communication with the air outlet 2024, so that the sub-air passage 204 and the air outlet 2024 are in communication with each other through the blind hole 2025, so that the air can sequentially flow through the air inlet 2031, the annular air passage 203, and the sub-air passage 204, and be discharged from the air outlet 2024.
As shown in fig. 3, specifically, when the material is conveyed from the conveying channel 104 to the discharge hole 201, the material passes through the gap 2023 by extrusion between the outer cylinder 2022 and the stem 2021, and is continuously conveyed along the outer wall of the stem 2021 towards the direction in which the stem 2021 protrudes out of the die plate 200, so that the material is extruded and formed, and under the filling effect of the gas discharged from the gas outlet 2024 of the stem 2021, the formed hollow tube is prevented from shrinking to the greatest extent, so that the hollow tube is more full, and the redundant heat on the hollow tube can be taken away by the gas discharged from the gas outlet 2024, so as to achieve the effect of rapid cooling.
As shown in fig. 2, as an alternative embodiment of the present application, the number of the discharge ports 201 may be multiple, and the multiple discharge ports 201 are arranged annularly from the center of the die plate 200 outwards, and a plurality of layers of discharge areas are formed, in the present application, four layers of discharge areas are taken as an example, the discharge ports 201 of two adjacent discharge areas are distributed in a staggered manner, so that the distribution of materials during transportation to the discharge ports 201 is more uniform, and the quality of hollow tubes formed by each discharge port 201 is ensured to be the same to the greatest extent; and, the inner core assemblies 202 are disposed in the discharge holes 201, so that the core columns 2021 are uniformly distributed, and the air outlet amount and the pressure of each core column 2021 can be the same.
It will be appreciated that two annular air passages 203 may be provided, the number of the sub air passages 204 is the same as the number of the discharge ports 201, the annular air passages 203 are arranged outwards from the center of the die plate 200, the annular air passages 203 near the center of the die plate 200 are communicated with the sub air passages 204 in the two-layer discharge area near the center of the die plate 200, and the annular air passages 203 far from the center of the die plate 200 are communicated with the sub air passages 204 in the two-layer discharge area far from the center of the die plate 200.
It should be noted that, the above embodiment is only an optional embodiment of the present application, and the specific shape and number of the annular air passages may be changed according to specific working scenarios and working requirements, for example, the annular air passages may be circular annular air passages or square annular air passages, and the number of the annular air passages may be 1, or 3, 4, 5, or the like.
As shown in fig. 4, as a specific embodiment of the present application, the diameter of the inner wall of the fixing base 100 may be sequentially increased from the feeding end to the discharging end, so that the cross section of the fixing base is flared and adapted to the shape of the guide cone 103, and the outer side wall of the guide cone 103 is parallel to the inner wall of the fixing base 100, so that the guide cone 103 plays a guiding role on the material in the material conveying channel 104, and further ensures that the material is uniformly conveyed to the discharging port 201 to the greatest extent.
As shown in fig. 1 and fig. 4, as a preferred embodiment of the present application, the hollow tube forming device may further include a heating assembly 105 wound on the outer wall of the fixing base 100, where the heating assembly 105 includes a heating ring (not labeled in the drawing) wound on the outer wall of the fixing base 100 and a heating end 1051 disposed on the heating ring, the heating end 1051 may be connected with a heating device such as a heater (not shown in the drawing), and through the heating assembly 105, materials in the material conveying channel 104 may be heated, so that the situation that the temperature of the materials is too low to affect the hollow tube forming can be prevented as much as possible, and through the cooperation between the heating assembly 105 and the cooling channel 102 and the cooling cavity 1031, the temperature of the materials is controlled within a temperature range suitable for the hollow tube forming, and further, the processing efficiency and quality of the hollow tube are improved.
Optionally, the fixing base 100 may be provided with a temperature detecting component (not shown in the figure), where the temperature detecting component is disposed on a side wall of the fixing base 100 and is connected with the heating component 105 through a PLC, and one end of the temperature detecting component extends into an outer wall of the material conveying channel 104, so as to detect a material temperature in the material conveying channel 104 in real time, and may generate a detecting signal, and when the material temperature is not within a set range of the temperature detecting component, the temperature detecting component may transmit the detecting signal to the heating component 105, and after receiving the detecting signal, the heating component 105 may automatically perform heating and cooling according to the detecting signal, so that the material is maintained within a certain temperature range.
As shown in fig. 1 and fig. 2, as a specific embodiment of the present application, a first connection hole (not shown) may be provided at an end of the flow guiding cone 103 near the die plate 200, and a first matching hole 205 may be provided on the die plate 200; the hollow tube forming device may further include first fasteners (not shown) passing through the first coupling holes and the first fitting holes 205, respectively, to achieve the coupling between the guide cone 103 and the die plate 200; the fixing base 100 may be provided with a second connection hole 206, and the mold plate 200 may be provided with a second fitting hole 106; the hollow tube forming device may further include second fasteners (not shown) passing through the second coupling holes 206 and the second coupling holes 106, respectively, to achieve coupling between the fixing base 100 and the die plate 200.
Further, the first connecting hole, the first matching hole 205, the second connecting hole 206, and the second matching hole 106 may be threaded holes, and the first fastening piece and the second fastening piece may be bolts respectively matched with the first connecting hole, the first matching hole 205, and bolts respectively matched with the second connecting hole 206, and the second matching hole 106, and the removable connection between the die plate 200 and the guide cone 103, and between the die plate 200 and the fixing base 100 may be respectively realized through threaded connection.
It should be noted that the above embodiments are only alternative embodiments of the present application, and the detachable connection between the die plate 200 and the guide cone 103, and the detachable connection between the die plate 200 and the fixing base 100 may also be other connection manners, such as plugging, pin connection, and the like.
As another specific embodiment of the present application, the guide cone 103 and the die plate 200 may be fixedly connected (e.g. welded), and the die plate 200 and the fixing base 100 may also be fixedly connected (e.g. welded).
As shown in fig. 4, alternatively, the fixing base 100 may be a one-piece forged integral structure, so as to facilitate processing and manufacture, and reduce the processing cost of the hollow tube forming device; the fixing base 100 is provided with a connecting part 107 protruding from the feeding port 101 at one end of the feeding port 101, the connecting part 107 may be connected with a feeding device (not shown in the figure), so as to ensure the input of materials, and a certain supporting force is provided for the hollow tube forming device through the connection with the feeding device.
The non-mentioned places in the application can be realized by adopting or referring to the prior art.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (7)
1. The hollow tube forming device is characterized by comprising a fixed seat with a cavity and a die plate connected with one end of the fixed seat, wherein a feed inlet is formed in the fixed seat, and a discharge outlet is formed in the die plate;
the fixing seat comprises a cooling channel, a guide cone and a material conveying channel, wherein the guide cone is arranged in the cavity in a removable way, the material conveying channel is defined by the outer wall of the guide cone and the inner wall of the fixing seat, and the material conveying channel is respectively communicated with the feeding port and the discharging port;
the cooling channel surrounds the outer side of the material conveying channel so as to cool the materials which sequentially flow through the material inlet, the material conveying channel and the material outlet;
the hollow tube forming device further comprises an inner core assembly arranged in the discharge hole, and the inner core assembly protrudes out of the outer end face of the die disc;
the inner core assembly comprises a core column and an outer cylinder sleeved on the core column, and a gap for material extrusion molding is formed between the outer cylinder and the core column;
the die plate comprises an annular air passage and a sub air passage communicated with the annular air passage, the annular air passage is provided with an air inlet, and the inside of the core column is provided with an air outlet communicated with the sub air passage, so that air can sequentially flow through the air inlet, the annular air passage and the sub air passage and be discharged from the air outlet;
the number of the discharge holes is multiple, the discharge holes are distributed annularly outwards from the center of the die plate, a plurality of discharge areas are formed, and the discharge holes of two adjacent discharge areas are distributed in a staggered mode.
2. The hollow tube forming device according to claim 1, wherein a cooling cavity is provided in the inside of the guide cone, and the diameter of the end of the guide cone close to the die plate is larger than the diameter of the end of the guide cone far from the die plate.
3. The hollow tube forming device as claimed in claim 1, wherein the diameter of the inner wall of the fixing base is sequentially increased from the feed end to the discharge end so that the cross section thereof is flared and adapted to the shape of the guide cone.
4. A hollow tube forming device as claimed in claim 3 wherein the outer side wall of the cone is parallel to the inner wall of the holder.
5. The hollow tube forming device of claim 1, further comprising a heating assembly disposed about the outer wall of the holder.
6. The hollow tube forming device according to claim 1, wherein a first connecting hole is formed in one end of the guide cone, which is close to the die plate, and a first matching hole is formed in the die plate;
the hollow tube forming device further comprises a first fastening piece, wherein the first fastening piece penetrates through the first connecting hole and the first matching hole respectively so as to realize connection between the diversion cone and the die plate.
7. The hollow tube forming device as claimed in claim 6, wherein the fixing base is provided with a second connection hole, and the die plate is provided with a second fitting hole;
the hollow tube forming device further comprises a second fastening piece, and the second fastening piece penetrates through the second connecting hole and the second matching hole respectively so as to achieve connection between the fixing base and the die plate.
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| CN202210480959.4A CN114851513B (en) | 2022-05-05 | 2022-05-05 | Hollow tube forming device |
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| CN114851513A (en) | 2022-08-05 |
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