CN215750663U

CN215750663U - Extrusion molding die head

Info

Publication number: CN215750663U
Application number: CN202122163052.9U
Authority: CN
Inventors: 杨光远; 李世建; 邓少鹏; 盛况; 熊大双
Original assignee: China Tobacco Hubei Industrial LLC; Hubei Zhongyan Cigarette Materials Factory
Current assignee: China Tobacco Hubei Industrial LLC; Hubei Zhongyan Cigarette Materials Factory
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-02-08
Anticipated expiration: 2031-09-08

Abstract

The utility model relates to the technical field of extrusion molding dies, in particular to an extrusion molding die head. It is used for processing the special pipe, the special pipe include the pipe wall and with the support rib that the pipe wall is connected, support the rib with form a plurality of compartment chambeies between the pipe wall, the extrusion moulding die head is including the bush that is equipped with the shaping chamber, and arrange in the mandrel in the shaping intracavity, the mandrel includes the feed portion, and is used for forming the shaping portion of special pipe, the feed portion is equipped with the feed inlet, the shaping portion with form between the bush with the material passageway that the feed inlet is linked together, material passageway is including being used for forming the first material passageway of pipe wall, and be used for forming the second material passageway of support rib. According to the utility model, the first material channel and the second material channel are formed by designing the forming cavity of the neck mold and the forming part of the core mold, so that the extrusion molding die head can machine the special-shaped round pipe to meet different use requirements.

Description

Extrusion molding die head

Technical Field

The utility model relates to the technical field of extrusion molding dies, in particular to an extrusion molding die head.

Background

The existing heating non-combustible cigarette filter stick mainly comprises a supporting section, a cooling section and a filter tip section, wherein the cooling section is mostly made of PLA plastic round tubes, an airflow channel can be formed, the temperature of smoke gas is reduced, and the experience of a user in smoking is improved. The existing special-shaped round pipe comprises a round pipe wall and a support rib which is arranged inside the pipe wall and shaped like a Chinese character 'mi', wherein the support rib separates the inner part of the round pipe into a plurality of airflow channels, so that the flue gas cooling effect is improved, meanwhile, the support rib can also support the pipe wall, the roundness of the pipe wall is ensured, and the follow-up composite processing is facilitated. However, the existing plastic pipe mold mainly prepares a single pipe and cannot prepare a perforated pipe, particularly a special-shaped perforated pipe.

In order to solve the above problems, the patent document CN98216755.5 provides a porous tube extrusion molding mold, which mainly comprises an extrusion die head connected to an extruder, wherein a compression channel is provided at the connection end part in the extrusion die head, and a diversion channel for distributing thermoplastic material in advance is provided subsequently, the diversion channel is connected with a diversion edge by a rib, the tail part of the diversion edge is connected with a cooling plug by a cooling connecting rod, a cooling water pipe is led into the cooling plug from the outside through the cooling connecting rod, and a vacuum cooling molding sleeve is arranged outside the diversion edge, so that the porous tube molding realizes internal and external double cooling molding. The porous extrusion molding die has a complex structure, and cannot be used for manufacturing special pipes with a cross-shaped support rib structure.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides an extrusion molding die head capable of solving the problems that the existing molding die is complex in structure and cannot manufacture special-shaped porous circular tubes.

The technical scheme for solving the problems is that the extrusion molding die head is provided and used for processing the special-shaped pipe, the special-shaped pipe comprises a pipe wall and a supporting rib connected with the pipe wall, a plurality of separation cavities are formed between the supporting rib and the pipe wall, the extrusion molding die head comprises a mouth die provided with a molding cavity and a core die arranged in the molding cavity, the core die comprises a feeding part and a molding part used for forming the special-shaped pipe, the feeding part is provided with a feeding hole, a material channel communicated with the feeding hole is formed between the molding part and the mouth die, and the material channel comprises a first material channel used for forming the pipe wall and a second material channel used for forming the supporting rib.

Preferably, the first material channel is formed between the outer surface of the forming part and the inner surface of the forming cavity, a profiled hole penetrating through the forming part is axially formed in the forming part, the profiled hole is communicated with the first material channel, and the profiled hole forms the second material channel.

Preferably, the feed inlets include a plurality of circumferential feed inlets communicated with the first material channel and a plurality of radial feed inlets communicated with the second material channel, and the circumferential feed inlets are distributed along the circumferential direction of the feed part

Preferably, the second material passage divides the molding part into a plurality of spokes separated from each other, and the molding part further comprises an air flow passage arranged in the spokes.

Preferably, the feeding portion is provided with a first air inlet communicated with the air flow passage.

Preferably, the die comprises a mounting part connected with the feeding part, and the mounting part is provided with a mounting hole for accommodating the feeding part and a third air inlet communicated with the mounting hole.

Preferably, the gas-liquid separator further comprises an adjusting ring which is arranged in the mounting hole and is abutted to the feeding part, and the adjusting ring is provided with a second gas inlet communicated with the first gas inlet and the third gas inlet.

Preferably, the mounting portion is further provided with an adjusting hole communicated with the mounting hole, an adjusting screw is arranged in the adjusting hole, and the adjusting screw can penetrate through the adjusting hole to be abutted against the adjusting ring.

Preferably, the die further includes a processing portion provided with the molding cavity, and the molding cavity penetrates through the processing portion and is communicated with the mounting hole.

Preferably, in the present invention, the length dimension of the core mold is larger than the length dimension of the die.

The utility model has the beneficial effects that:

1. the first material channel and the second material channel are formed by designing the forming cavity of the mouth mold and the forming part of the core mold, so that the extrusion forming die head can machine the special-shaped round pipe to meet different use requirements.

2. Through designing the airflow channel, the first air outlet, the second air outlet and the third air outlet, cooling air can be introduced into the core mold, the core mold and the inner part of the circular tube are cooled, and the tube is cooled and shaped at an accelerated speed.

Drawings

FIG. 1 is a schematic view of a profile tube structure;

FIG. 2 is a schematic view of an extrusion molding die structure;

FIG. 3 is a cross-sectional view of an extrusion molding die;

FIG. 4 is a schematic view of a mandrel configuration;

FIG. 5 is a cross-sectional view of the mandrel;

FIG. 6 is a schematic view of a die configuration;

FIG. 7 is a cross-sectional view of the die;

FIG. 8 is a schematic diagram of a tuning structure;

wherein: 1. a special-shaped pipe; 11. a tube wall; 12. a support rib; 13. a separation chamber; 2. a neck ring mold; 21. a molding cavity; 22. an installation part; 221. mounting holes; 222. a third air inlet; 223. an adjustment hole; 23. a processing section; 3. a core mold; 31. a feeding section; 311. a circumferential feed port; 312. a radial feed inlet; 313. a first air inlet; 32. a molding section; 321. a first material passage; 322. a second material passage; 323. spokes; 324. an air flow channel; 4. an adjustment ring; 41. a second air inlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The utility model relates to an extrusion molding die head, as shown in fig. 1-7, which is used for processing a special-shaped pipe 1, the special-shaped pipe 1 comprises a pipe wall 11 and a support rib 12 connected with the pipe wall 11, a plurality of separation cavities 13 are formed between the support rib 12 and the pipe wall 11, the extrusion molding die head comprises a die 2 provided with a molding cavity 21 and a core die 3 arranged in the molding cavity 21, the core die 3 comprises a feeding part 31 and a molding part 32 used for forming the special-shaped pipe 1, the feeding part 31 is provided with a feeding hole, a material channel communicated with the feeding hole is formed between the molding part 32 and the die 2, and the material channel comprises a first material channel 321 used for forming the pipe wall 11 and a second material channel 322 used for forming the support rib 12. A first material channel 321 is formed between the outer surface of the forming part 32 and the inner surface of the forming cavity 21, a special-shaped hole penetrating through the forming part 32 is axially arranged on the forming part 32, the special-shaped hole is communicated with the first material channel 321, and the special-shaped hole forms a second material channel 322; the feed inlets include a plurality of circumferential feed inlets 311 communicated with the first material channel 321 and a plurality of radial feed inlets 312 communicated with the second material channel 322, and the circumferential feed inlets 311 are circumferentially distributed along the feed part 31.

In this embodiment, as shown in fig. 3, the core mold 3 is an integral type and made of metal, the feeding portion 31 is in the shape of a circular truncated cone, the upper end surface of the feeding portion is provided with a downward-recessed annular cutting groove, and a plurality of circular circumferential feeding holes 311 extending from the upper end surface to the lower end surface of the feeding portion 31 are uniformly distributed in the cutting groove; a radial feed inlet 312 which is shaped like a Chinese character 'mi' and extends to the lower end surface along the upper end surface of the feed part 31 is arranged in a circular area surrounded by the inner side surfaces of the cutting grooves; during processing, the material in a molten state flows into the feed port of the extrusion molding die head for shaping from the outlet of the extrusion flow channel, at the moment, the outlet of the extrusion flow channel is connected with the feed part 31 of the core die 3, and the cutting groove can play a role in auxiliary positioning, so that the outlet of the extrusion flow channel and the feed port of the core die 3 can be quickly butted; in addition, divide into circumference feed inlet 311 and radial feed inlet 312 with the feed inlet and can make the material through the multiple spot simultaneous feeding, avoid the feeding inequality, produce the problem such as bubble in the product.

In the present embodiment, the forming portion 32 of the core mold 3 has a cylindrical shape, is provided on the lower end surface of the feeding portion 31, is concentric with the feeding portion 31, and has a smaller radial dimension than the feeding portion 31. The radial feed inlet 312 is formed in a shape like a Chinese character 'mi' and penetrates through the forming part 32 along the axial direction, the forming part 32 is divided into a plurality of mutually separated spokes 323, and a second material channel 322 is formed by gaps among the spokes 323. During processing, the spokes 323 can play a role in supporting and shaping, and ensure that each separation cavity 13 of the special-shaped pipe does not deform.

In the present embodiment, as shown in fig. 5, the die 2 is in a boss shape, and includes a mounting portion 22 and a processing portion 23, wherein the upper end surface of the mounting portion 22 is provided with a plurality of thread hole shapes for being in threaded connection with the extrusion flow channel; the mounting hole 221 is provided in the center of the mounting portion 22, the molding cavity 21 communicating with the mounting hole 221 is provided in the center of the processing portion 23, and a step surface is formed between the mounting hole 221 and the molding cavity 21 so that the molding portion 32 of the core mold 3 can be inserted into the molding cavity 21, and the feeding portion 31 can be placed in the mounting hole 221 to abut against the step surface. At this time, the material in the molten state can enter the molding cavity 21 from the feeding port, and fill the first material passage 321 and the second material passage 322 to form the tube wall 11 and the support rib 12 of the special-shaped tube.

In this embodiment, in order to ensure the coaxiality of the forming portion 32 of the core mold 3 when inserted into the forming cavity 21 of the die 2 and avoid the problem of uneven thickness of the pipe wall 11 caused by the deviation of the installation position of the forming portion 32, as shown in fig. 7 and 8, the extrusion molding die of the present invention further comprises an adjusting ring 4 disposed in the installation hole 221 and abutting against the feeding portion 31; the side of installation department 22 is equipped with a plurality of along installation department 22 circumference evenly distributed, the regulation hole 223 that is linked together with mounting hole 221, is equipped with adjusting screw in the regulation hole 223, and adjusting screw can pass regulation hole 223 and adjusting ring 4 butt, rises into the length in the regulation hole 223 through adjusting screw, and the axiality of adjustable adjusting ring 4 and bush 2, and then guarantees the axiality of shaping portion 32 and shaping chamber 21.

In this embodiment, since the supporting rib 12 is arranged inside the special-shaped tube, which is more complex than a common circular tube, the heat dissipation speed in the tube is slow in the extrusion molding cooling and shaping process, and the cooling and solidification speed of the tube wall 11 is fast, which may cause the deformation of the tube wall 11 or the supporting rib 12, and affect the product quality, as shown in fig. 4-8, the molding portion 32 of the core mold 3 is provided with an airflow channel 324, the feeding portion 31 is provided with a first air inlet 313 communicated with the airflow channel 324, the adjusting ring 4 is provided with a second air inlet 41 communicated with the first air inlet 313, and the mounting portion 22 of the neck mold 2 is provided with a third air inlet 222 communicated with the first air inlet 313 and the second air inlet 41. Specifically, a plurality of air flow passages 324 extending from the lower end surfaces of the spokes 323 to the feeding portion 31 are arranged in each spoke 323 of the core mold 3, an annular cutting groove is arranged on the side surface of the feeding portion 31 near the forming portion 32, a plurality of first air inlets 313 extending to the center of the feeding portion 31 are arranged in the annular cutting groove, and the first air inlets 313 and the air flow passages 324 are in one-to-one correspondence and are communicated with each other; the side wall of the adjusting ring 4 is provided with a plurality of second air inlets 41 penetrating through the side wall of the adjusting ring 4, when the adjusting ring 4 is abutted against the core mold 3, the second air inlets 41 are opposite to the annular cutting groove and are communicated with the first air inlets 313; further, the side wall of the mouthpiece 2 is provided with a third air inlet 222 communicating with the mounting hole 221, and the third air inlet 222 communicates with the second air inlet 41. During processing, an air inlet pipe is connected to the third air inlet 222, cooling gas can be introduced into the third air inlet 222 through the air inlet pipe, the cooling gas sequentially flows into the air flow channel 324 through the third air inlet 222, the second air inlet 41 and the first air inlet 313, the spokes 323 are cooled, the temperature difference between the special-shaped pipe and the spokes 323 is increased, heat conduction is accelerated, and the interior of the pipe is cooled; meanwhile, cooling gas enters each partitioned cavity 13 of the tube from the gas flow channel 324 in the spoke 323, and the cooling gas takes away heat inside the tube, so that the cooling is accelerated.

During processing, the material in a molten state enters the feed inlet of the core mold 3 through the extrusion flow channel, is extruded into the molding cavity 21 under the action of pressure, and is filled in the first material channel 321 and the second material channel 322 to form a pipe embryonic form; at this time, the cooling gas with the temperature not higher than the room temperature is continuously introduced through the air inlet pipe connected with the third air inlet 222, so that the inside of the pipe is cooled, and the cooling and shaping of the pipe are accelerated.

The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An extrusion die head for processing a special-shaped pipe (1), wherein the special-shaped pipe (1) comprises a pipe wall (11) and a support rib (12) connected with the pipe wall (11), and a plurality of separation cavities (13) are formed between the support rib (12) and the pipe wall (11), characterized in that: extrusion moulding die head is including bush (2) that is equipped with die cavity (21), and arrange in mandrel (3) in die cavity (21), mandrel (3) are including feeding portion (31), and are used for forming shaping portion (32) of special pipe (1), feeding portion (31) are equipped with the feed inlet, shaping portion (32) with form between bush (2) with the material passageway that the feed inlet is linked together, the material passageway is including being used for forming first material passageway (321) of pipe wall (11), and be used for forming second material passageway (322) of support rib (12).

2. The extrusion molding die of claim 1, wherein: the surface of shaping portion (32) with form between the internal surface of shaping chamber (21) first material passageway (321), the axial of shaping portion (32) is equipped with and runs through the dysmorphism hole of shaping portion (32), dysmorphism hole with first material passageway (321) intercommunication, the dysmorphism hole forms second material passageway (322).

3. The extrusion molding die of claim 1, wherein: the feed inlet include with circumference feed inlet (311) of first material passageway (321) intercommunication, and with radial feed inlet (312) of second material passageway (322) intercommunication, circumference feed inlet (311) are equipped with a plurality ofly, follow feed portion (31) circumference distributes.

4. The extrusion molding die of claim 1, wherein: the second material passage (322) divides the forming part (32) into a plurality of mutually separated spokes (323), and the forming part (32) also comprises a gas flow passage (324) arranged in the spokes (323).

5. The extrusion molding die of claim 4, wherein: the feeding portion (31) is provided with a first air inlet (313) communicated with the air flow channel (324).

6. The extrusion molding die of claim 5, wherein: the neck ring mold (2) comprises an installation part (22) connected with the feeding part (31), wherein the installation part (22) is provided with an installation hole (221) used for accommodating the feeding part (31) and a third air inlet (222) communicated with the installation hole (221).

7. An extrusion molding die according to claim 6, wherein; the device is characterized by further comprising an adjusting ring (4) which is arranged in the mounting hole (221) and is abutted to the feeding portion (31), wherein the adjusting ring (4) is provided with a second air inlet (41) communicated with the first air inlet (313) and the third air inlet (222).

8. The extrusion molding die of claim 7, wherein: installation department (22) still be equipped with regulation hole (223) that mounting hole (221) are linked together, be equipped with adjusting screw in regulation hole (223), adjusting screw can pass regulation hole (223) with adjusting ring (4) butt.

9. The extrusion molding die of claim 6, wherein: the neck ring mold (2) further comprises a processing part (23) provided with the molding cavity (21), and the molding cavity (21) penetrates through the processing part (23) and is communicated with the mounting hole (221).

10. The extrusion molding die of claim 1, wherein: the length dimension of the core die (3) is larger than that of the mouth die (2).