CN213533725U - Die structure convenient for removing die adhesion precipitate - Google Patents

Abstract

The utility model relates to a mold structure especially relates to a mold structure convenient to clear away bush adhesion educt, including bush, mold core and bush annex, the centre of bush is equipped with and is used for holding the appearance chamber of mold core, the surface of mold core with the appearance intracavity surface of bush clearance between form annular fuse-element runner, the bush annex is fixed on the terminal surface of bush, mold core, bush, the coaxial setting of bush annex, the bush annex is the hollow cylinder who comprises two semicircle annular pieces of facing, and the centre forms discharge port, discharge port includes interior round mouth and excircle mouth, the radius of interior round mouth with the appearance chamber radius of bush equals, just the outside border of interior round mouth with the appearance chamber border of bush is aimed at and is pasted tightly. Through the die structure, the problems that the carbide is separated out from the die and the cleaning is frequent and difficult can be effectively solved, the surface of the pipe can be prevented from being scraped, and the production efficiency is greatly improved.

Description

Die structure convenient for removing die adhesion precipitate

Technical Field

The utility model relates to a mould structure especially relates to a mould structure convenient to clear away bush adhesion precipitate.

Background

At present, extrusion molding of a plastic pipeline needs to be carried out through a mouth mold, the problem of bonding of supplied materials is often caused in the extrusion process, and the problem of roughness of the inner wall of the pipeline is easily caused, for example, Chinese patents disclosed in publication No. CN207523010U and publication No. 2018.6.22, namely a PE pipe extruder mold, wherein through the recombination design of the mouth mold and a core mold, a core insert and a ring insert made of tetrafluoroethylene are adopted to carry out recombination to form the mold, and the defect that high-temperature supplied materials are easily adhered to the inner wall of the mouth mold and the outer wall of the core mold is overcome by utilizing the temperature difference of materials, so that the supplied materials are smoothly extruded without generating bubbles, and the smoothness of the inner wall of a. However, most of the current incoming materials are HDPE, and the molecular weight distribution of the HDPE material is usually mainly unimodal distribution, so that high and low molecular weight polymers exist; the low molecular weight substances are easily decomposed and separated out under the influence of the shearing action of a screw and the processing temperature in the production and processing process, precipitates are easily adhered to a discharge port of a neck mold and finally carbonized when extruded, extruded melt is directly contacted with the adhered carbonized materials, so that more scribing lines with different depths appear on the surface of the pipe, the scribing lines easily cause stress concentration and pipe explosion of the pipe and influence the appearance of the product, and obviously, the condition is not considered in the patent, and the scribing lines appear on the surface of the pipe easily. The existing common practice of production is to remove precipitates through a frequent scraping die, but the scraping is easy to scrape flowers or scrape the surface of a melt by using a tool, the scraped melt is easy to explode in a vacuum box or the scraped precipitated carbide is easy to adhere to the surface of the melt and finally enters or is clamped in a gap of a sizing sleeve because a pipe with a deeper surface scratch needs to be subjected to waste treatment, so that the wire scraping in a larger range is caused, the sizing sleeve needs to be cleaned by stopping the machine, and the production efficiency is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mould structure convenient to clear away bush adhesion precipitate can effectively solve the bush through this kind of mould structure and appear the frequent, difficult problem of clearance of carbide clearance, can avoid the tubular product surface to be scraped the flower, has greatly improved production efficiency.

The technical scheme of the utility model is that:

the utility model provides a mould structure convenient to drive bush adhesion educt, includes bush, mold core and bush annex, the centre of bush is equipped with and is used for holding the appearance chamber of mold core, the surface of mold core with the clearance that holds between the intracavity surface of bush forms annular fuse-element runner, the bush annex is fixed on the terminal surface of bush, mold core, bush, the coaxial setting of bush annex, the bush annex is the hollow cylinder who comprises two semicircle annular pieces of subsides, and the centre forms discharge port, discharge port includes interior circle mouth and excircle mouth, the radius of interior circle mouth with the appearance chamber radius of bush equals, just the outside border of interior circle mouth with the appearance chamber border of bush is aimed at and is pasted tightly.

The utility model discloses the problem to bush low molecular weight material appear adhesion carbonization and lead to the tubular product surface ruling has carried out the bush mould and has improved, the bush attachment of inseparable laminating bush surface and detachable has been added, the interior round mouth size of bush attachment is unanimous with the appearance chamber size of bush, the length of the fuse-element runner of fuse-element extrusion melt has been prolonged in other words, make low molecular weight material directly adhere to on the interior round mouth of bush attachment when appearing from the fuse-element runner, when clearing up, only need to constitute two semicircle annular attachments separation of bush attachment and can clear away the material that appears on the interior round mouth, make two semicircle annular attachments close tightly and can continue the operation once more after the clean up.

Further, the end face of the neck ring die is symmetrically provided with fixing columns at two sides, fixing grooves are formed in the top and the bottom of each fixing column, protrusions matched with the fixing grooves are formed in two ends of each semi-circular patch, and the two semi-circular patches are embedded into the fixing grooves of the fixing columns through the protrusions at the two ends to be installed to form the neck ring die attachment.

The bulges at the two ends of the two semicircular ring-shaped patches are respectively embedded into the fixed grooves of the fixed columns from the upper side and the lower side to be fixed to form the mouth mold patch, low-molecular substances are directly adhered to the inner circular opening of the mouth mold patch when being separated out, the two semicircular ring-shaped patches are separated to remove the separated substances on the inner circular opening when removing the separated substances, and the two semicircular ring-shaped patches are tightly closed after being cleaned up to continue the operation.

Further, the fixing column is a metal column and is welded on the end face of the neck mold.

Further, the protrusion is made of a magnetic material, and the protrusion is embedded in the fixing groove and tightly attracted. The magnetic bulge and the metal fixing groove are tightly attracted and embedded, so that the magnetic bulge and the metal fixing groove can be stably combined and can be conveniently and quickly separated, and the work efficiency of removing precipitates can be improved.

Further, the protrusion is spherical, and the fixing groove is a spherical groove.

Further, the thickness of the inner round opening is 1mm-3 mm.

Further, the thickness of the inner round mouth is 2 mm.

The thickness of the inner round opening is the length of the precipitate which can be adhered, the length of 1mm-3mm is reserved to enable low molecular weight substances to be separated and adhered on the inner round opening, the phenomenon that the extrusion of the pipe is affected due to the fact that the length of the inner round opening is too long is avoided, and the length is preferably 2 mm.

Furthermore, smooth transition is carried out between an inner circular opening and an outer circular opening of the discharge port.

Further, the radius of the outer round opening is larger than that of the inner round opening.

Further, the discharge port is of an R-angle structure.

The discharge port is of an R-angle structure with an outer circular opening larger than an inner circular opening, so that the discharging fluidity of the melt flow channel cannot be influenced in the closing and separating processes of the die attachment, and the operation is convenient.

The utility model has the advantages that:

the utility model discloses an it is frequent that the application can effectively solve the bush and appear the carbide clearance, the difficult problem of clearance, its principle is for utilizing upper and lower separable-the bush annex that closes tightly, the low molecular substance that will appear changes into on the interior round mouth that makes its adhesion in bush annex by original adhesion at bush discharge port, along with the separation of two semicircle ring shape patches from top to bottom, the carbide that appears on the circle mouth including the adhesion also breaks away from the surface of extruding the fuse-element, can clear away from the material that appears on the interior round mouth this moment, make two semicircle ring shape patches close tightly once more after the clean up and can continue the operation. The utility model discloses an upper and lower disconnect-type bush attachment makes the precipitate be convenient for the clearance and can not scrape broken fuse-element surface, has solved original clearance and has appeared that carbide material is easy to adhere and finally get into and block and lead to the tubular product of large tracts of land to scrape the line and stop the clear sizing cover problem in sizing cover gap on the fuse-element surface, has greatly improved work efficiency, and this the utility model discloses an interior round mouth thickness of tight bush ejection of compact terminal surface of bush attachment subsides is 1mm-3mm, and ejection of compact port design is the R angle structure for the bush attachment can not produce the influence to the ejection of compact mobility of fuse-element runner carrying out the in-process of closing and separating, the operation is convenient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a side schematic view of FIG. 1;

FIG. 3 is a schematic view of the die attachment in a detached state;

FIG. 4 is a schematic end view of a semi-circular patch;

FIG. 5 is an enlarged view of portion A of FIG. 4;

in the figure: the mold comprises a mold 1, a mold core 2, a mold paste accessory 3, a semicircular annular paste piece 301, an inner circular opening 302, an outer circular opening 303, a protrusion 304, a melt flow channel 4, a fixing column 5 and a fixing groove 501.

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 are not to be construed as limiting the present patent.

Example 1:

as shown in fig. 1-4, a mold structure convenient for removing precipitates adhered to a neck mold comprises a neck mold 1, a mold core 2 and a neck mold attachment 3, wherein a cavity for accommodating the mold core 2 is arranged in the middle of the neck mold 1, an annular melt flow channel 4 is formed in a gap between the outer surface of the mold core 2 and the inner surface of the cavity of the neck mold 1, the neck mold attachment 3 is fixed on the end surface of the neck mold 2, the mold core 2, the neck mold 1 and the neck mold attachment 3 are coaxially arranged, the neck mold attachment 3 is a hollow cylinder formed by two semicircular ring attachments 301, a discharge port is formed in the middle of the neck mold attachment, the discharge port comprises an inner circular port 302 and an outer circular port 303, the radius of the inner circular port 302 is equal to that of the cavity of the neck mold 1, and the outer edge of the inner.

Referring to fig. 1 and 3, in this embodiment, the fixing columns 5 are symmetrically arranged on two sides of the end surface of the die 1, the fixing slots 501 are formed in the top and the bottom of each fixing column 5, the protrusions 304 matched with the fixing slots 501 are arranged at two ends of the semicircular ring-shaped sticker 301, and the two semicircular ring-shaped stickers 301 are embedded into the fixing slots 501 of the fixing columns 5 through the protrusions 304 at the two ends to form the die sticker 3. The bulges 304 at the two ends of the two semicircular ring-shaped patches 301 are respectively embedded into the fixing grooves 501 of the fixing columns 5 from the upper side and the lower side to be fixed to form the mouth mold patch 3, low molecular substances are directly adhered to the inner circular opening 302 of the mouth mold patch 3 when being separated out, the separated substances on the inner circular opening 302 can be removed by separating the two semicircular ring-shaped patches 301 when the separated substances are removed, and the two semicircular ring-shaped patches 301 are tightly closed after being cleaned up, so that the operation can be continued.

The fixing column 5 is a metal column, the fixing column 5 is welded on the end face of the neck mold 1, the protrusion 304 is made of a magnetic material, and the protrusion 304 is embedded in the fixing groove 501 and tightly attracted. The magnetic protrusion 304 and the metal fixing groove 501 are tightly engaged with each other, so that the magnetic protrusion and the metal fixing groove can be stably combined and can be easily and rapidly separated, and the work efficiency of removing the precipitate can be improved. Preferably, the protrusion 304 is spherical and the fixing groove 501 is a spherical groove.

Referring to FIG. 5, the thickness of the inner circular opening 302 may be 1mm to 3mm, in this embodiment 2 mm. The thickness of the inner round mouth 302 is the length of the precipitate which can be adhered, the length of 1mm-3mm can be reserved to enable low molecular weight substances to be separated and adhered on the inner round mouth 302, but the phenomenon that the extrusion of the pipe is affected due to the overlong length of the inner round mouth 302 is avoided, and the length is preferably 2 mm.

Referring to fig. 2 and 4, in the present embodiment, the inner circular opening 302 and the outer circular opening 303 of the discharging port have a smooth transition, the radius of the outer circular opening 303 is larger than that of the inner circular opening 302, and the discharging port has an R-angle structure. The discharge port is an R-angle structure with the outer circular opening 303 larger than the inner circular opening 302, so that the die attachment 3 cannot influence the discharge flowability of the melt flow channel 4 in the closing and separating processes, and the operation is convenient.

The utility model discloses a theory of operation does:

the utility model discloses it improves to bush low molecular weight material precipitation adhesion carbonization and the problem that leads to the ruling of tubular product surface has carried out the bush mould, 1 surface of closely laminating bush and detachable bush attachment 3 have been added, bush attachment 3's interior circle mouth 302 size is unanimous with bush 1's appearance chamber size, the melt runner 4's of fuse-element flow path 4 of fuse-element is extruded to bush 1 has been prolonged in other words, make low molecular weight material directly adhere to on bush attachment 3's interior circle mouth 302 when appearing from melt runner 4, when clearing up, only need to form two semicircle annular attachments 301 separation of bush attachment 3 and can clear away the precipitation material on interior circle mouth 302, make two semicircle annular attachments 301 close tightly and can continue the operation after the clean up once more.

And simultaneously, the utility model discloses increased fixed slot 501's location structure at bush 1, upper and lower two mobilizable semicircle annular patches 301 can pinpoint when closing tightly and fix and paste tight bush 1 to prevent that interior round mouth 302 of bush annex 3 from following horizontal position nonconformity with the appearance chamber of bush 1 outward, influencing the bush ejection of compact.

The utility model discloses an it is frequent that the carbide clearance is appeared to the application can effectively be solved the bush, the difficult problem of clearance, its principle is for utilizing upper and lower separable-the bush attachment 3 that closes tightly, the low molecular substance that will appear changes into on the interior round mouth 302 that makes its adhesion in bush attachment 3 at bush discharge port by original adhesion, along with the separation of two semicircle ring shape patches 301 from top to bottom, the carbide that appears on the interior round mouth 302 also breaks away from the surface of extruding the fuse-element including the adhesion, can clear away from the material that appears on the interior round mouth 302 this moment, make two semicircle ring shape patches 301 close tightly again after the clean up and can continue the operation.

The utility model discloses an upper and lower disconnect-type bush annex 3 makes the precipitate be convenient for the clearance and can not scrape broken fuse-element surface, has solved original clearance and has appeared that carbide material easily adheres at the fuse-element surface finally gets into and the card leads to the tubular product of large tracts of land to scrape the line and stops the clear sizing cover problem in sizing cover gap, has greatly improved work efficiency, and this the utility model discloses an interior round mouth 302 thickness of the tight bush discharge end face of bush annex 3 subsides is 1mm-3mm, and discharge port designs for the R angle structure for bush annex 3 can not produce the influence to the ejection of compact mobility of fuse-element runner 4 in the in-process of going on closing and separating, the operation is convenient.

In this embodiment, the process of extruding the melt from the extruder through the melt channel 4 of the die 1, and the process of mounting the die 1 and the core 2 on the extruder, which are well known to those skilled in the art, will not be described. The utility model discloses it leads to the problem that the tubular product surface produced the rule to have carried out the bush mould improvement mainly to appear the adhesion carbonization easily when the fuse-element flows out from the fuse-element runner 4 of bush 1, has added the bush annex 3 of 1 surface of closely laminating bush and detachable.

The utility model discloses be not limited to HDPE pipeline product, the bush that produces when also being applicable to other kinds of material production pipeline is appeared and is scraped line problem.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to 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. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and 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. The utility model provides a mould structure convenient to drive bush adhesion educt, its characterized in that, includes bush, mold core and bush annex, the centre of bush is equipped with and is used for holding the appearance chamber of mold core, the surface of mold core with the appearance intracavity surface of bush clearance between form annular fuse-element runner, the bush annex is fixed on the terminal surface of bush, mold core, bush annex coaxial arrangement, the bush annex is the hollow cylinder who comprises two semi-circular shape patches, middle discharge port that forms, discharge port includes interior round mouth and outer round mouth, the radius of interior round mouth with the appearance chamber radius of bush equals, just the outside border of interior round mouth with the chamber border alignment of bush is pasted tightly.

2. The mold structure convenient for removing die adhesion precipitates according to claim 1, wherein fixing columns are symmetrically arranged on two sides of the end surface of the die, fixing grooves are formed in the top and the bottom of each fixing column, protrusions matched with the fixing grooves are arranged at two ends of each semicircular patch, and the two semicircular patches are embedded into the fixing grooves of the fixing columns through the protrusions at the two ends to be installed to form the die patch.

3. The die structure for facilitating the removal of die adhesion deposits according to claim 2, wherein said fixing posts are metal posts, and said fixing posts are welded to the end face of said die.

4. The die structure for facilitating the removal of die-adhered precipitates as claimed in claim 3, wherein said protrusions are made of a magnetic material, and said protrusions are inserted into said holding grooves and tightly attracted thereto.

5. The die structure for facilitating the removal of die-adhered precipitates as claimed in claim 2, wherein said protrusions are spherical and said holding grooves are spherical recesses.

6. The die structure for facilitating the removal of die-adhered precipitates according to claim 1, wherein said inner round mouth has a thickness of 1mm to 3 mm.

7. The die structure for facilitating the removal of die-adhered precipitates according to claim 6, wherein said inner round mouth has a thickness of 2 mm.

8. The die structure for facilitating the removal of die-adhered precipitates according to claim 1, wherein said discharge port has a smooth transition between an inner round mouth and an outer round mouth.

9. The die structure for facilitating the removal of die adhesion precipitates of claim 8 wherein said outer round mouth has a larger radius than said inner round mouth.

10. The die structure for facilitating the removal of die adhesion deposits as recited in claim 9, wherein said exit ports are in an R-angle configuration.

Images