CN218399365U - Die for internal and external exchange of melt material - Google Patents

Abstract

The utility model relates to a mould for internal and external exchange of melt materials, which comprises a mould base, an opening mould, a mould core, a guiding flow divider and a flow dividing cone, wherein the mould core is positioned in the opening mould, a pipe embryo flow passage is formed between the mould core and the opening mould, and the pipe embryo flow passage is divided into a pipe embryo inner flow passage and a pipe embryo outer flow passage; one end of the outer side of the guide flow divider is connected with the die holder, and the other end of the outer side of the guide flow divider is connected with the mouth die; one end of the center of the guide flow divider is connected with the flow divider, the other end of the center of the guide flow divider is connected with the mold core, the flow divider extends into the inner cavity of the mold base and forms an annular flow passage, and the annular flow passage is divided into an annular outer flow passage and an annular inner flow passage; the guide flow divider is provided with a first flow guide part and a second flow guide part, the first flow guide part is communicated with the annular inner flow channel and the tube blank outer flow channel, and the second flow guide part is communicated with the annular outer flow channel and the tube blank inner flow channel. By adding the guide flow divider in the die, the carbonized particle impurities are positioned in the middle of the finally formed tube blank, and black spots and yellow lines formed by the carbonized particle impurities cannot be seen on the outer surface of the tube blank.

Description

Die for internal and external exchange of melt material

Technical Field

The utility model relates to an extrusion tooling field of moulding plastics, more specifically relates to a mould that is used for inside and outside exchange of fuse-element material.

Background

The PVC drain pipe product specification is many in the market now, and it is big to possess the volume, and the general production mode of production PVC drain pipe adopts extrusion tooling to extrude the pipe blank, is drawn by the tractor drawing and is stereotyped and spray the refrigerated mode simultaneously through cooling design cover, and current extrusion tooling generally includes die holder, bush and mold core, and the extruder is crowded the melt material into the die holder, then through the reposition of redundant personnel effect of mold core, forms the pipe blank in the die cavity between bush and mold core.

The production standards of PVC drain pipes in the market at present also include an A pipe, a B pipe and other non-standard pipes, enterprises strictly execute the production according to the formula standards when the A pipe is produced, but when other standard pipes are produced, the formula difference of each enterprise is large, particularly, the amount of the added filler is large, an extruder and an extrusion die are matched and fixed relatively in the pipe production process, the temperature of a control charging barrel can fluctuate under the condition that the filler is increased and the pipes are produced for a long time, the abrasion conditions of a screw rod of the extruder and the charging barrel are different, the melting states of the materials can generate differences, a melt can have a carbonization phenomenon in the gap between the screw rod of the extruder and the charging barrel, the carbide is extruded together with the melt material through the die to form a pipe blank, black spots or yellow lines are formed on the surface of the pipe blank, and the position generated by the carbide is on the outer surface of the pipe, so that the appearance and the performance of the pipe are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome the problem that above-mentioned prior art well pipe surface formed the blackspot or the yellow line, provide a mould that is used for the inside and outside exchange of fuse-element material, blackspot and yellow line can not appear in the surface of the pipe embryo of production.

In order to solve the technical problem, the utility model adopts the technical scheme that: a mold for internal and external exchange of melt materials comprises a mold base, an opening mold, a mold core, a guide flow divider and a flow dividing cone, wherein the mold core is positioned in the opening mold, a tube blank flow passage is formed between the mold core and the opening mold and divided into a tube blank inner flow passage and a tube blank outer flow passage, the tube blank inner flow passage is close to the mold core, and the tube blank outer flow passage is close to the opening mold; one end of the outer side of the guide flow divider is connected with the die holder, and the other end of the outer side of the guide flow divider is connected with the neck ring die; one end of the center of the guide flow divider is connected with the flow divider, the other end of the center of the guide flow divider is connected with the mold core, the flow divider extends into an inner cavity of the mold base and forms an annular flow passage, the annular flow passage is divided into an annular outer flow passage and an annular inner flow passage, the annular outer flow passage is close to the inner surface of the mold base, and the annular inner flow passage is close to the flow divider; the guide flow divider is provided with a first flow guiding part and a second flow guiding part, the first flow guiding part is communicated with the annular inner flow channel and the tube embryo outer flow channel, and the second flow guiding part is communicated with the annular outer flow channel and the tube embryo inner flow channel.

In the above technical solution, because there are gaps between the extruder barrel and the extruder screws and between the two extruder screws, small carbonized particle impurities may appear in the melt material in the gap under high temperature and high heat conditions, wherein the carbonized particle impurities generated in the gap between the extruder barrel and the extruder screws may flow along the inner surface of the die set after entering the die holder, when the melt material flows to the spreader cone, the melt material is expanded by the conical spreader cone and flows into the annular flow channel formed by the spreader cone and the inner cavity of the die holder, the carbonized particle impurities are located on the annular outer flow channel and attached to the inner surface of the die holder, the melt material in the annular flow channel is acted by the guide divider, the melt material located on the annular outer flow channel enters the tube blank inner flow channel through the second guide portion, the melt material located on the annular inner flow channel enters the tube blank outer flow channel through the first guide portion, and the carbonized particle impurities on the melt material located on the annular outer flow channel may be clamped between the tube blank outer flow channel and the tube blank inner flow channel, that is located inside the melt material but not on the surface of the melt material, and the carbonized particle impurities may not be seen on the final molded tube blank surface, and the black particles formed on the tube.

The tube blank outer flow passage, the tube blank inner flow passage, the annular outer flow passage and the annular inner flow passage are all used for dividing and naming different areas of the flow passages, and are not limited to structures.

Preferably, the first flow guiding part and the second flow guiding part both comprise a plurality of through holes which are circumferentially distributed on the guide flow divider, and the through holes are respectively a first through hole and a second through hole which are distributed in a staggered manner; the inlet end of the first through hole is closer to the center of the guide flow divider than the inlet end of the second through hole, and the outlet end of the second through hole is closer to the center of the guide flow divider than the outlet end of the first through hole. The trends of the first through hole and the second through hole are inclined, so that the solution material of the annular outer flow channel can be exchanged to the tube blank inner flow channel, the solution material of the annular inner flow channel is exchanged to the tube blank outer flow channel, two annular regions are arranged on two end faces of the guide flow divider, one annular region is close to the center and is an inner annular region, and the other annular region is an outer annular region. And the inlet ends of the first through holes and the outlet ends of the second through holes are positioned in the inner annular region, the outlet ends of the first through holes and the inlet ends of the second through holes are positioned in the outer annular region, the two first through holes and the two second through holes are distributed in a staggered manner, namely the second through holes are positioned between the two first through holes, the first through holes are also positioned between the two second through holes, and through the design, the first through holes and the second through holes which are obliquely arranged cannot interfere and can allow the dissolved materials to smoothly circulate.

Preferably, the two ends of the first through hole and the second through hole are both provided with diameter expanding ports, and the inner diameter of each diameter expanding port is gradually increased towards the center far away from the guide flow divider. The diameter expanding port can have more space for the solution material to enter the through hole and also can enable the solution material to flow out of the through hole more smoothly.

Preferably, the radial cross section of the first through hole and the second through hole is rectangular; the distance between the both sides on the circumferencial direction of reducing mouth edge is to keeping away from the center of direction shunt increases gradually, the reducing mouth is followed the distance between the radial direction of direction shunt is ascending is unchangeable. Since the size of the first through hole and the second through hole in the radial direction is influenced by the pipe blank flow channel and the annular flow channel, the sum of the first through hole and the second through hole in the radial direction exceeds the width of the flow channel, and no effect is caused because the radial cross section of the first through hole and the radial cross section of the second through hole are set to be rectangular, so that the usable area can be larger. Meanwhile, the distance between two sides of the aperture opening along the radial direction of the guide flow divider is not changed, and the aperture opening is consistent with the radial width of the corresponding through hole. The size along the circumferential direction can positively influence the flow rate of the melt material, and the flow rate is larger when the size is larger, so that the size of the expanding opening along the circumferential direction can be adjusted to be beneficial to the melt material to enter the through hole and flow out of the through hole.

Preferably, the first through hole and the second through hole have the same width in the radial direction of the guide flow divider. Equivalently, the annular flow channel and the tube blank flow channel are divided into two equal parts, the flow of the solution material in the first through hole and the second through hole is kept consistent, and black particle impurities are ensured to be positioned in the middle of the tube blank and do not affect the quality of the tube blank.

Preferably, the diverging cone and the guiding splitter are integrally formed, so that a part needing to be installed is reduced, the relative position between the diverging cone and the guiding splitter is more accurate, installation errors do not exist, and the annular flow channel can be better aligned with the first flow guide part and the second flow guide part.

Preferably, be provided with a plurality of first mounting holes that distribute along circumference equidistance on the die holder, the direction shunt be provided with first mounting hole complex second mounting hole passes through the fastener first mounting hole with the second mounting hole can be realized the die holder with the connection of direction shunt. The direction shunt can dismantle fixed connection with the die holder, connects more firmly.

Preferably, the guide diverter and the end connected with the mold core are provided with mounting grooves, and the mold core is provided with a bulge matched with the mounting grooves. The mounting groove is located the center of direction shunt, and the bellying can realize centering between them with mounting groove threaded connection, lets first water conservancy diversion portion and second water conservancy diversion portion aim at the pipe embryo runner better.

Preferably, an adjusting ring is arranged between the guide flow divider and the neck mold, and the adjusting ring, the neck mold and the mold core enclose the tube blank flow channel; the fixed plate is arranged on the neck ring, the fixed plate is sleeved with a limiting protrusion, third mounting holes are distributed on the fixed plate along the circumference at equal intervals, a fourth mounting hole matched with the third mounting hole is formed in the adjusting ring, the limiting protrusion is located between the fixed plate and the adjusting ring, one end of the limiting protrusion is abutted to the adjusting ring, the other end of the limiting protrusion is abutted to the fixed plate, and the limiting protrusion penetrates through a fastener through the third mounting hole and the fourth mounting hole to be connected among the fixed plate, the adjusting ring and the neck ring. The adjusting ring can adjust the width of the inlet end of the pipe blank flow channel and the compression ratio of the die when in use. After the fastener passes through the third mounting hole and the fourth mounting hole and is screwed down, the distance between the fixing plate and the adjusting ring is reduced, the fixing plate and the adjusting ring are fixedly connected, and meanwhile, the limiting protrusion of the die can be clamped tightly, so that the mounting and the fixing of the fixing plate, the adjusting ring and the adjusting ring are realized.

Preferably, the third mounting hole is communicated to the second mounting hole. The fastener can be from the third mounting hole first mounting hole of wearing to, realizes the connection of fixed plate, adjustable ring, direction shunt and die holder, and the installation of mould can be simple quick more.

Compared with the prior art, the beneficial effects of the utility model are that: the guide flow divider is additionally arranged in the die, so that carbonized particle impurities on the outer surface of the tube blank are exchanged to the middle of a solution material in the extrusion molding process, the carbonized particle impurities are positioned in the middle of the finally molded tube blank, and black spots and yellow lines formed by the carbonized particle impurities cannot be seen on the outer surface of the tube blank.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment 1 of a mold for exchanging inside and outside of a melt material according to the present invention;

fig. 2 is a perspective view of the guide diverter of the present invention;

FIG. 3 is a schematic view of the guide divider of the present invention near one end of the mold core;

fig. 4 is a schematic structural view of embodiment 3 of the mold for exchanging the inside and the outside of the melt material according to the present invention;

fig. 5 is a schematic structural diagram of an operating state of the mold for exchanging the inside and the outside of the melt material according to the present invention;

fig. 6 is a partially enlarged view of a position a of fig. 5.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1

Fig. 1-3 show an embodiment 1 of a mold for exchanging inside and outside of a melt material, including a mold base 1, a die 2, a mold core 3, a guiding flow divider 5, and a flow dividing cone 6, where the mold core 3 is located in the die 2, a tube blank flow channel 4 is formed between the mold core 3 and the die 2, the tube blank flow channel 4 is divided into a tube blank inner flow channel 401 and a tube blank outer flow channel 402, the tube blank inner flow channel 401 is close to the mold core 3, and the tube blank outer flow channel 402 is close to the die 2; one end of the outer side of the guide flow divider 5 is connected with the die holder 1, and the other end of the outer side of the guide flow divider is connected with the neck ring die 2; one end of the center of the guide flow divider 5 is connected with the flow divider 6, the other end of the center of the guide flow divider is connected with the mold core 3, the flow divider 6 extends into the inner cavity of the mold base 1 and forms an annular flow passage 7, the annular flow passage 7 is divided into an annular outer flow passage 701 and an annular inner flow passage 702, the annular outer flow passage 701 is close to the inner surface of the mold base 1, and the annular inner flow passage 702 is close to the flow divider 6; the guide flow divider 5 is provided with a first flow guiding part 501 and a second flow guiding part 502, the first flow guiding part 501 is communicated with the annular inner flow passage 702 and the tube blank outer flow passage 402, and the second flow guiding part 502 is communicated with the annular outer flow passage 701 and the tube blank inner flow passage 401.

Specifically, the first flow guiding part 501 and the second flow guiding part 502 both include a plurality of through holes circumferentially distributed on the guide diverter 5 at equal intervals, which are first through holes 5011 and second through holes 5021, respectively, and the first through holes 5011 and the second through holes 5021 are distributed in a staggered manner; the inlet end of the first through hole 5011 is closer to the center of the guide diverter 5 than the inlet end of the second through hole 5021, and the outlet end of the second through hole 5021 is closer to the center of the guide diverter 5 than the outlet end of the first through hole 5011. The first through hole 5011 and the second through hole 5021 are inclined in direction, so that the solution material of the annular outer flow passage 701 can be exchanged to the tube blank inner flow passage 401, the solution material of the annular inner flow passage 702 can be exchanged to the tube blank outer flow passage 402, two annular regions are arranged on two end faces of the guide flow divider 5, one annular region is close to the center and is an inner annular region, and the other annular region is an outer annular region. The inlet ends of the first through holes 5011 and the outlet ends of the second through holes 5021 are located in an inner annular region, the outlet ends of the first through holes 5011 and the inlet ends of the second through holes 5021 are located in an outer annular region, the two first through holes 5011 and the two second through holes 5021 are distributed in a staggered mode, namely the second through holes 5021 are located between the two first through holes 5011, the first through holes 5011 are also located between the two second through holes 5021, and through the design, the first through holes 5011 and the second through holes 5021 which are obliquely arranged cannot interfere with each other and can smoothly circulate the molten material.

The utility model discloses a theory of operation or work flow: as shown in fig. 5 to 6, due to the gaps between the extruder barrel 9 and the extruder screw 10 and between the two extruder screws 10, the melt material 12 will have minute carbonized particle impurities 11 in the gaps under high temperature and high heat conditions, wherein, after the carbonized particle impurities 11 generated in the gaps between the extruder barrel 9 and the extruder screws 10 enter the die holder 1 and flow along the inner surface of the die set, the carbonized particle impurities 11 generated between the two extruder screws 10 will flow forward along the middle position of the melt material 12. When the melt material 12 flows to the spreader cone 6, the conical spreader cone 6 expands and flows into the annular flow channel 7 formed by the spreader cone 6 and the die holder 1 inner cavity, the carbonized particle impurities 11 are located on the annular outer flow channel 701 and attached to the inner surface of the die holder 1, and the carbonized particle impurities 11 located in the middle position flow along the surface of the spreader cone 6. The melt material in the annular flow passage 7 enters the tube blank inner flow passage 401 through the second through hole 5021 under the action of the guide flow divider 5, the melt material on the annular outer flow passage 701 enters the tube blank outer flow passage 402 through the first through hole 5011, the carbonized particle impurities 11 on the melt material on the annular outer flow passage 701 and the carbonized particle impurities 11 on the melt material on the annular inner flow passage 702 are clamped between the tube blank outer flow passage 402 and the tube blank inner flow passage 401, namely, the carbonized particle impurities 11 are positioned in the melt material and not on the surface of the melt material, and after the tube blank is finally molded and extruded, black spots and yellow lines formed by the carbonized particle impurities 11 cannot be seen on the surface of the tube blank.

The beneficial effects of this embodiment: the guide flow divider 5 is additionally arranged in the die, so that the carbonized particle impurities 11 on the outer surface of the tube blank are exchanged to the middle of a dissolved material in the extrusion molding process, the carbonized particle impurities 11 are positioned in the middle of the finally molded tube blank, and black spots and yellow lines formed by the carbonized particle impurities 11 cannot be seen on the outer surface of the tube blank.

Example 2

An embodiment 2 of a mold for inside-outside exchange of a melt material is different from the embodiment 1 in that a guide flow divider 5 is further defined as shown in fig. 2 to 3 on the basis of the embodiment 1.

The two ends of the first through hole 5011 and the second through hole 5021 are both provided with a diameter expanding port 503, and the inner diameter of the diameter expanding port 503 gradually increases away from the center of the guide diverter 5. The diameter expanding opening 503 can provide more space for the solution material to enter into the through hole, and the solution material can flow out of the through hole more smoothly. In this embodiment, the radial cross sections of the first through hole 5011 and the second through hole 5021 are rectangular; the distance between the two sides of the diameter-enlarging opening 503 in the circumferential direction gradually increases toward the center away from the guide diverter 5, and the distance between the two sides of the diameter-enlarging opening 503 in the radial direction of the guide diverter 5 does not change. Since the dimensions of the first through-hole 5011 and the second through-hole 5021 in the radial direction are influenced by the pipe blank flow path 4 and the annular flow path 7, the sum of the two in this direction does not play any role in exceeding the width of the flow path, since the radial cross-section of the first through-hole 5011 and the second through-hole 5021 is rectangular, enabling a larger usable area. At the same time, the distance between the two sides of the aperture opening in the radial direction of the guide flow divider 5 is not changed, and the aperture opening is consistent with the radial width of the corresponding through hole. The dimension in the circumferential direction has a positive influence on the flow rate of the molten material, and the flow rate increases as the dimension increases, so that the dimension of the enlarged diameter opening 503 in the circumferential direction can be adjusted to facilitate the molten material to enter and exit the through-hole.

Further, the first through hole 5011 and the second through hole 5021 have the same width in the radial direction of the guide diverter 5. The flow of the solution material in the first through hole 5011 and the second through hole 5021 is kept consistent, which is equivalent to the two equal division of the annular flow channel 7 and the tube blank flow channel 4, so that the black particle impurities are ensured to be positioned in the middle of the tube blank, and the quality of the tube blank is not affected.

In addition, the diversion cone 6 and the guide flow divider 5 are integrally formed, so that a part needing to be installed is reduced, the relative position between the diversion cone 6 and the guide flow divider 5 is more accurate, installation errors do not exist, and the annular flow passage 7 can be better aligned with the first flow guide part 501 and the second flow guide part 502.

The remaining technical features and the working principle of the present embodiment are consistent with embodiment 1.

Example 3

An embodiment 3 of a mold for exchanging the inside and outside of a melt material is different from the embodiment 1 or 2 in that the connection structure of the mold is further defined as shown in fig. 4 on the basis of the embodiment 1 or 2.

Specifically, be provided with a plurality of first mounting holes 101 along circumference equidistance distribution on the die holder 1, direction shunt 5 be provided with first mounting hole 101 complex second mounting hole 504, pass through the fastener first mounting hole 101 with second mounting hole 504 can realize die holder 1 with the connection of direction shunt 5. The direction shunt 5 can dismantle fixed connection with the die holder 1, and the connection is firmer.

Wherein, the guide flow divider 5 is provided with mounting groove 505 with the one end that the mold core 3 is connected, the mold core 3 be provided with mounting groove 505 complex bellying 301. The installation groove 505 is located in the center of the guide diverter 5, and the boss 301 can be screwed into the installation groove 505, so that the first diversion part 501 and the second diversion part 502 can be aligned with the pipe blank flow channel 4 better.

Furthermore, an adjusting ring 13 is arranged between the guide flow divider 5 and the neck mold 2, and the adjusting ring 13, the neck mold 2 and the mold core 3 enclose the tube blank flow channel 4; be provided with spacing arch 201 and cover on the bush 2 and be equipped with fixed plate 8, the third mounting hole 801 that distributes along circumference equidistance on the fixed plate 8, be provided with on the adjustable ring 13 with third mounting hole 801 complex fourth mounting hole 1301, spacing arch 201 is located the fixed plate 8 with between the adjustable ring 13, one end with adjustable ring 13 butt, the other end with fixed plate 8 butt passes through the fastener third mounting hole 801 with fourth mounting hole 1301 can realize be connected between fixed plate 8, adjustable ring 13 and the bush 2. The adjusting ring 13 can adjust the width of the inlet end of the tube blank flow passage 4, and can adjust the compression ratio of the mold when in use. After the fasteners pass through the third mounting hole 801 and the fourth mounting hole 1301 and are screwed, the distance between the fixing plate 8 and the adjusting ring 13 is reduced, the fixing plate is fixedly connected with the adjusting ring 13, and meanwhile, the limiting protrusions 201 of the mouth mold 2 can be clamped tightly, so that the mounting and the fixing of the fixing plate, the adjusting ring and the adjusting ring are realized.

Preferably, the third mounting hole 801 is communicated to the second mounting hole 504. The fastener can be from third mounting hole 801 all the way to first mounting hole 101, realizes the connection of fixed plate 8, adjustable ring 13, direction shunt 5 and die holder 1, and the installation of mould can be simple fast more.

The remaining technical features and the operating principle of this embodiment are consistent with embodiment 1 or 2.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A die for internal and external exchange of melt materials comprises a die holder (1), a mouth die (2) and a die core (3), wherein the die core (3) is positioned in the mouth die (2), a tube blank runner (4) is formed between the die core (3) and the mouth die (2), the tube blank runner (4) is divided into a tube blank internal runner (401) and a tube blank external runner (402), the tube blank internal runner (401) is close to the die core (3), and the tube blank external runner (402) is close to the mouth die (2), and the die for internal and external exchange of melt materials is characterized by further comprising a guide flow divider (5) and a flow divider cone (6); one end of the outer side of the guide flow divider (5) is connected with the die holder (1), and the other end of the outer side of the guide flow divider is connected with the neck ring die (2); one end of the center of the guide flow divider (5) is connected with the flow dividing cone (6), the other end of the center of the guide flow divider is connected with the mold core (3), the flow dividing cone (6) extends into an inner cavity of the mold base (1) and forms an annular flow passage (7), the annular flow passage (7) is divided into an annular outer flow passage (701) and an annular inner flow passage (702), the annular outer flow passage (701) is close to the inner surface of the mold base (1), and the annular inner flow passage (702) is close to the flow dividing cone (6); the guide flow divider (5) is provided with a first flow guide part (501) and a second flow guide part (502), the first flow guide part (501) is communicated with the annular inner flow channel (702) and the tube blank outer flow channel (402), and the second flow guide part (502) is communicated with the annular outer flow channel (701) and the tube blank inner flow channel (401).

2. The mold for the exchange of inside and outside melt material according to claim 1, wherein the first flow guiding portion (501) and the second flow guiding portion (502) each comprise a plurality of through holes circumferentially distributed on the guide diverter (5), respectively a first through hole (5011) and a second through hole (5021), and the first through hole (5011) and the second through hole (5021) are distributed in a staggered manner; the inlet end of the first through hole (5011) is closer to the center of the guide flow divider (5) than the inlet end of the second through hole (5021), and the outlet end of the second through hole (5021) is closer to the center of the guide flow divider (5) than the outlet end of the first through hole (5011).

3. The mold for the exchange of inside and outside melt material according to claim 2, characterized in that the first through hole (5011) and the second through hole (5021) are provided with a diameter expanding port (503) at both ends, and the inner diameter of the diameter expanding port (503) is gradually increased away from the center of the guide diverter (5).

4. A mould for exchange of inside and outside melt material according to claim 3, characterized in that the radial cross section of the first through hole (5011) and the second through hole (5021) is rectangular; the distance between the two sides of the diameter expanding opening (503) along the circumferential direction is gradually increased towards the center far away from the guide flow divider (5), and the distance between the two sides of the diameter expanding opening (503) along the radial direction of the guide flow divider (5) is unchanged.

5. The die for internal and external exchange of melt material according to claim 2, characterized in that the widths of the first through hole (5011) and the second through hole (5021) in the radial direction of the guide diverter are uniform.

6. A mould for exchange of melt material between the inside and the outside, according to claim 1, characterized in that the tap cone (6) is formed integrally with the guide diverter (5).

7. A mould for exchange of melt material between the inside and the outside according to any one of claims 1 to 6, wherein a plurality of first mounting holes (101) are provided in the mould base (1) and are equally circumferentially distributed, and wherein the guide diverter (5) is provided with second mounting holes (504) matching with the first mounting holes (101), and wherein the connection between the mould base (1) and the guide diverter (5) is realized by fastening members passing through the first mounting holes (101) and the second mounting holes (504).

8. A mould for exchange of melt material between the inside and the outside according to claim 7, characterized in that the end of the guide diverter (5) connected to the mould core (3) is provided with a mounting groove (505), and the mould core (3) is provided with a protrusion (301) cooperating with the mounting groove (505).

9. The die for exchanging inside and outside of melt material according to claim 8, characterized in that an adjusting ring (13) is arranged between the guide flow divider (5) and the die (2), and the adjusting ring (13), the die (2) and the die core (3) enclose the tube embryo flow channel (4); be provided with spacing arch (201) on bush (2) and be equipped with fixed plate (8) with the cover, along third mounting hole (801) that circumference equidistance distributes on fixed plate (8), be provided with on adjustable ring (13) with third mounting hole (801) complex fourth mounting hole (1301), spacing arch (201) are located fixed plate (8) with between adjustable ring (13), one end with adjustable ring (13) butt, the other end with fixed plate (8) butt passes through the fastener third mounting hole (801) with fourth mounting hole (1301) can be realized connect between fixed plate (8), adjustable ring (13) and bush (2).

10. The mold for exchange of inside and outside melt material as claimed in claim 9, wherein the third mounting hole (801) is communicated to the second mounting hole (504).

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