CN214521834U - One-out double-layer pipe forming die - Google Patents
One-out double-layer pipe forming die Download PDFInfo
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- CN214521834U CN214521834U CN202120640081.7U CN202120640081U CN214521834U CN 214521834 U CN214521834 U CN 214521834U CN 202120640081 U CN202120640081 U CN 202120640081U CN 214521834 U CN214521834 U CN 214521834U
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Abstract
The utility model provides a go out double-deck tubular product forming die, fuse-element voltage regulator device including intercommunication inlayer fuse-element runner, fuse-element voltage regulator device's outflow department is connected with the reposition of redundant personnel seat, reposition of redundant personnel seat shunts the fuse-element in the mould that two symmetries set up, the mould body includes outer mould part and arranges the mold core part in the outer mould part in, the mold core part with form the fuse-element runner between the outer mould part, the fuse-element runner divide into spiral section, shrink section, design section in proper order from flowing into to flow out, and design section intercommunication has outer fuse-element runner, the mould body is installed the first regulation structure that is used for adjusting tubular product inlayer wall thickness in the shrink section, installs the second regulation structure that is used for adjusting tubular product outer wall thickness in the design section. The die solves the problems of unstable wall thickness and unstable product performance of the product, and improves the performance and the production efficiency of the product.
Description
Technical Field
The utility model relates to a plastic conduit production technical field especially relates to a go out double-deck tubular product forming die.
Background
The traditional double-layer PP-R water supply pipe mold adopts a structure, such as Chinese patent with publication number CN106079359A and publication number 2016.11.9: the mold has a one-in-one structure, the production efficiency is low, the problems of unstable wall thickness and unstable product performance of a product exist, and the produced product is easy to have defects and cannot meet the production requirements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a go out double-deck tubular product forming die changes through the optimization to the mould structure, develops and more is suitable for the fashioned mould of PP-R feed pipe product, becomes one by original one and goes out two to solved the unstable problem of product wall thickness and product property ability, improved the performance and the production efficiency of product.
The technical scheme of the utility model is that:
the utility model provides a two-layer tubular product forming die of one play, is including the fuse-element voltage regulator device of intercommunication inlayer fuse-element runner, fuse-element voltage regulator device's outflow department is connected with the reposition of redundant personnel seat, reposition of redundant personnel seat shunts the fuse-element to two symmetrical mold bodys that set up, the mold body includes outer mold part and arranges the mold core part in the outer mold part in, the mold core part with form the fuse-element runner between the outer mold part, the fuse-element runner divide into spiral section, shrink section, design section in proper order from flowing into to flowing out, and design section intercommunication has outer fuse-element runner, the mold body is installed the first regulation structure that is used for adjusting tubular product inlayer wall thickness in the shrink section, installs the second regulation structure that is used for adjusting tubular product outer wall thickness in design section.
The melt that the inner layer melt runner flowed in is through the stable accuse of fuse-element voltage regulator device after pressing, get into the reposition of redundant personnel seat, later divide into two sections through reposition of redundant personnel seat with the fuse-element by one section, the fuse-element runner that forms between mould core part and the outer mould part is rethread to the fuse-element material flow, the spiral motion is done through the spiral section earlier to the fuse-element material flow, the spiral material flow changes into the linear type through the contraction section again and flows, finally, it stereotypes through the stereotyping section again, the outer fuse-element of product then gets into through the outer fuse-element runner that sets up at the stereotyping section, and converge in the stereotyping section, extrude jointly and form double-deck pipe base member at last. When the inner wall thickness has deviation, the deviation point is adjusted by the first adjusting structure arranged on the contraction section, so that the deviation of the inner wall thickness can be corrected quickly, and the uniformity of the inner wall thickness is ensured; similarly, when the outer wall thickness has deviation, the second adjusting structure arranged on the shaping section can be used for timely adjusting, so that the deviation of the outer wall thickness can be quickly corrected, and the uniformity of the outer wall thickness is ensured; because the independent wall thickness mode of adjusting that the ectonexine all adopted, can effectually ensure the homogeneity of product wall thickness, simultaneously, increased the stable unanimity that fuse-element pressure stabilizing device ensured fuse-element pressure in the mould, can effectual reduction fluctuation of ejection of compact, promoted the comprehensive properties of product, can realize this product high quality production.
Further, the melt pressure stabilizing device is a melt pressure pump, and the melt pressure pump is communicated with the flow channel of the flow dividing seat through a first connecting section.
Furthermore, the first connecting section with the reposition of redundant personnel seat is connected the installation through flange, the side of first connecting section is equipped with the pressure sensor who is used for detecting fuse-element pressure.
Because the inner layer melt is divided into two parts by one material flow and then is molded after being divided and compressed by the mold into a plurality of channels, the hidden fluctuation factors are more, the pressure is unstable, and in order to ensure the stability of the pressure of the inner layer melt, a melt pressure pump is introduced into the inflow part of the mold, namely all melts are firstly metered by the operation of the melt pressure pump, and the throughput of the melt is accurately controlled; meanwhile, the pressure sensor arranged in the first connecting section detects the change of the melt pressure constantly, and when the pressure fluctuation exceeds a set value, the melt pressure pump is overhauled in time to ensure that the melt pressure fluctuates in a reasonable range, so that the pressure of each point of melt flowing in the die is kept consistent, the melt pressure stabilization control is realized, the problem of wall thickness deviation caused by the operation pressure fluctuation of the inner layer melt is prevented, and the product production qualification rate is improved.
Furthermore, the shunting seat is respectively connected with the bases of the two die bodies through two second connecting sections.
Further, the outer mold part comprises a first outer mold body, a second outer mold body, a mold base and an outer layer shunting body which are sequentially connected through screws; the mold core part comprises a spiral core, a shrinkage core and a fixed mold core which are sequentially connected through screws; a melt flow channel formed between the spiral core and the first outer die body is a spiral section; a melt flow channel formed between the shrinkage core and the second outer mold body is a shrinkage section; and a melt flow passage formed among the fixed mold core, the neck mold base and the outer layer split flow body is a fixed section.
Further, the outer layer melt runner is arranged on the outer layer shunt body and converges into a shaping section formed by the outer layer shunt body and the shaping core.
Further, first regulation structure is the adjustable ring, the adjustable ring is installed first outer die body with between the second outer die body, the both sides of adjustable ring are equipped with first adjusting screw, first adjusting screw is located the adjustable ring with the junction of first outer die body.
Increase the adjustable ring between first outer die body and second outer die body, when deviation appears in inlayer wall thickness, unscrew first adjusting screw, in time adjust the adjustable ring and carry out the circumferential displacement, adjust the deviation point in the shrinkage section, adjust the back and screw up again first adjusting screw can, can correct the deviation of inlayer wall thickness fast through the adjustable ring, ensure the homogeneity of inlayer wall thickness.
Further, a low-resistance gasket is arranged between the adjusting ring and the second outer die body.
Because first die body, second die body and adjustable ring are metal parts, and its contact friction is big, is unfavorable for the adjustable ring skew, so set up the low resistance packing ring between second die body and adjustable ring, the low resistance packing ring is high temperature resistant plastics, possesses good elasticity and low coefficient of friction characteristic simultaneously, through the partition of low resistance packing ring, reduces the frictional force of second die body and adjustable ring by a wide margin, is favorable to the adjustable ring to carry out the circumferential displacement fast, realizes the quick adjustment to the inlayer wall thickness.
Further, the second adjusting structure is a second adjusting screw, and the second adjusting screw is arranged at the joint of the die base and the second outer die body.
Because the fixed core is the mounting, when outer wall thickness deviation appears, the accessible is unscrewed the second adjusting screw, in time adjusts the bush base and carries out the circumference displacement, adjusts the deviation point in the fixed section, adjust the back and screw up again with the second adjusting screw can, because outer reposition of redundant personnel is fixed on the bush base, the bush base removes and is equivalent to outer reposition of redundant personnel removal, so can reach quick adjustment and correct the deviation of outer wall thickness, guarantee the homogeneity of outer wall thickness.
Further, the die base is mounted on the second outer die body through a die pressing plate.
The utility model has the advantages that:
the utility model optimizes the mould forming structure, adds the melt pressure stabilizer in the mould, realizes the pressure-stabilizing feeding of the mould through the high-precision melt pressure stabilizer, prevents the product defect caused by the fluctuation of the melt pressure, and solves the problem of unstable product performance; meanwhile, the inner and outer layer wall thicknesses of the double-layer pipe are subjected to deviation adjustment through the first adjusting structure of the contraction section and the second adjusting structure of the shaping section, so that the problem of unstable wall thickness of a product is solved; the production efficiency is high, and the productivity is improved by more than 1.5 times compared with the one-out-one-double-layer extrusion; the utility model discloses the application is extensive, and applicable all double-deck PP-R product shaping altogether.
Drawings
Fig. 1 is a schematic structural view of the mold of the present invention;
FIG. 2 is a schematic structural view of a PP-R double-layer pipe;
in the figure: the device comprises an inner-layer melt flow channel 1, a melt pressure pump 2, a first connecting section 3, a flow dividing seat 4, a pressure sensor 5, a second connecting section 6, a spiral core 7, a first outer die body 8, a shrinkage core 9, a second outer die body 10, a die base 11, a shaping core 12, an outer-layer flow dividing body 13, an outer-layer melt flow channel 14, an adjusting ring 15, a first adjusting screw 16, a second adjusting screw 17 and a die pressing plate 18.
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, a one-out-two-layer pipe forming die comprises a melt pressure stabilizing device communicated with an inner-layer melt flow channel 1, the melt pressure stabilizing device is a melt pressure pump 2, the melt pressure pump 2 is communicated with a flow channel of a shunting seat 4 through a first connecting section 3, the first connecting section 3 is connected and installed with the shunting seat 4 through a connecting flange, a pressure sensor 5 for detecting the melt pressure is arranged on the side edge of the first connecting section 3, the shunting seat 4 shunts the melt into two symmetrically arranged dies, the shunting seat 4 is respectively connected with bases of the two dies through two second connecting sections 6, and the dies comprise a spiral core 7, a first outer die 8, a shrinkage core 9, a second outer die 10, a die base 11, a shaping core 12 and an outer-layer shunt body 13; the first outer die body 8, the second outer die body 10, the die base 11 and the outer layer shunt body 13 are sequentially connected through screws to form an outer die part, and the spiral core 7, the shrinkage core 9 and the shaping core 12 are sequentially connected through screws to form a die core part; a melt flow channel is formed between the mold core component and the outer mold component, and the melt flow channel is sequentially divided into a spiral section, a contraction section and a shaping section from inflow to outflow; a melt flow channel formed between the spiral core 7 and the first outer die body 8 is a spiral section; a melt flow channel formed between the shrinkage core 9 and the second outer mold body 10 is a shrinkage section; a melt flow channel formed among the fixed mold core 12, the mold opening base 11 and the outer layer split flow body 13 is a fixed section; the outer layer melt runner 14 is arranged on the outer layer shunt body 13 and converges into a shaping section formed by the outer layer shunt body 13 and the fixed mold core 12; the die body is provided with a first adjusting structure for adjusting the wall thickness of the inner layer of the pipe at a contraction section, the first adjusting structure is an adjusting ring 15, the adjusting ring 15 is arranged between the first outer die body 8 and the second outer die body 10, two sides of the adjusting ring 15 are provided with first adjusting screws 16, and the first adjusting screws 16 are arranged at the connecting positions of the adjusting ring 15 and the first outer die body 8; and a second adjusting structure for adjusting the wall thickness of the outer layer of the pipe is arranged at the shaping section, the second adjusting structure is a second adjusting screw 17, the second adjusting screw 17 is arranged at the joint of the neck ring mold base 11 and the second outer mold body 10, and the neck ring mold base 11 is arranged on the second outer mold body 10 through a neck ring mold pressing plate 18.
In this embodiment, a low resistance washer is disposed between the adjustment ring 15 and the second housing body 10. Because first die body 8, second die body 10 and adjustable ring 15 are metal parts, and its contact friction is big, is unfavorable for the adjustable ring skew, so set up the low resistance packing ring between second die body 10 and adjustable ring 15, the low resistance packing ring is high temperature resistant plastics, possesses good elasticity and low coefficient of friction characteristic simultaneously, through the partition of low resistance packing ring, reduces the friction of second die body 10 and adjustable ring 15 by a wide margin, is favorable to adjustable ring 15 to carry out the circumferential displacement fast, realizes the quick adjustment to the inlayer wall thickness.
The utility model provides a fuse-element flow direction process as follows:
the inner melt flows into a melt pressure pump 2 through an inner melt runner 1, and enters a first connecting section 3 after being stably controlled and pressed by the melt pressure pump 2, then the melt is divided into two sections by a flow dividing seat 4, the divided melt enters a melt runner in a die body through a second connecting section 6, wherein the melt flows into a spiral section formed by a spiral core 7 and a first outer die body 8, the melt flow is divided into a plurality of strands from a solid body to do spiral motion, the spiral flow passes through a compression section formed by a contraction core 9, an adjusting ring 15 and a second outer die body 10 to change the spiral flow into linear flow, finally, the spiral flow is shaped through a shaping section formed by a die base 11, an outer flow dividing body 13 and a shaping core 12, the outer melt of the product enters through an outer melt runner 14 arranged on an outer flow dividing body 13 and converges into the shaping section formed by the outer flow dividing body 13 and the shaping core 12, and finally, extruding the two layers of pipe blank matrixes together.
Because the inner layer melt is divided into two parts by one material flow, and then the inner layer melt is molded after being divided and compressed by the mold into a plurality of channels, the hidden fluctuation factors are more, the pressure is unstable, and in order to ensure the stability of the pressure of the inner layer melt, a melt pressure pump 2 is introduced into the inflow part of the mold, namely all melts are firstly metered by the operation of the melt pressure pump 2, and the throughput of the melt is accurately controlled; meanwhile, the pressure sensor 5 arranged in the first connecting section 3 detects the change of the melt pressure constantly, and when the pressure fluctuation exceeds a set value, the melt pressure pump 2 is overhauled in time to ensure that the melt pressure fluctuates in a reasonable range, so that the pressure of each point of melt flowing in the die is kept consistent, the melt pressure stabilization control is realized, the problem of wall thickness deviation caused by the operation pressure fluctuation of the inner layer melt is prevented, and the product production qualification rate is improved.
As the PP-R double-layer pipe product is of a double-layer structure, as shown in figure 2, the wall thickness of the product is determined by an inner layer and an outer layer;
the wall thickness of the inner layer is realized by a special first adjusting structure, and the specific implementation mode is as follows: the adjusting ring 15 is additionally arranged in the first outer die body 8 and the second outer die body 10, when the inner wall thickness has deviation, the first adjusting screw 16 is unscrewed, the adjusting ring 15 is adjusted in time to perform circumferential displacement, the deviation point in the contraction section is adjusted, and after the adjustment is finished, the first adjusting screw 16 is screwed again, so that the deviation of the inner wall thickness can be quickly corrected through the adjusting ring 15, and the uniformity of the inner wall thickness is ensured;
the wall thickness of the outer layer is realized by a special second adjusting structure, and the specific implementation mode is as follows: the second adjusting screw 17 is arranged between the second outer die body 10 and the die base 11, the fixed core 12 is a fixed part, when the outer wall thickness has deviation, the second adjusting screw 17 can be loosened by screwing, the die base 11 can be adjusted in time to carry out circumferential displacement, the deviation point in the fixed section can be adjusted, after the adjustment is finished, the second adjusting screw 17 is screwed again, the outer shunting body 13 is fixed on the die base 11, the die base 11 moves equivalently to the movement of the outer shunting body 13, so that the deviation of the outer wall thickness formed by the melt flowing in the outer melt runner 14 can be adjusted and corrected quickly, and the uniformity of the outer wall thickness of the product is ensured.
The utility model discloses an independent wall thickness mode of regulation that the double-deck tubular product ectonexine of mould production all adopted can effectually ensure the homogeneity of product wall thickness, simultaneously, has increased the measurement feed of fuse-element force pump in the mould, has ensured the stable unanimity of fuse-element pressure, can effectually reduce the fluctuation of the ejection of compact, has promoted the comprehensive properties of product, can realize this product high quality production.
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 go out bilaminar tubular product forming die, its characterized in that, is including the fuse-element voltage regulator device of intercommunication inlayer fuse-element runner, fuse-element voltage regulator device's outflow department is connected with the reposition of redundant personnel seat, reposition of redundant personnel seat shunts the fuse-element to two mould bodies that the symmetry set up, the mould body includes outer mould part and arranges the mold core part in the outer mould part in, the mold core part with form the fuse-element runner between the outer mould part, the fuse-element runner divide into spiral section, shrink section, design section in proper order from flowing into to flowing out, design section intercommunication has outer fuse-element runner, the mould body is installed the first regulation structure that is used for adjusting tubular product inlayer wall thickness in the shrink section, installs the second regulation structure that is used for adjusting tubular product outer wall thickness in the design section.
2. The double-layer and double-layer pipe forming die as claimed in claim 1, wherein the melt pressure stabilizer is a melt pressure pump, and the melt pressure pump is communicated with the flow passage of the flow dividing seat through the first connecting section.
3. The double-layer pipe forming die as claimed in claim 2, wherein the first connecting section and the shunting seat are connected and mounted through a connecting flange, and a pressure sensor for detecting the pressure of the melt is arranged on the side of the first connecting section.
4. The two-layer pipe forming die according to claim 1, wherein the flow dividing base is connected to the bases of the two die bodies through two second connecting sections.
5. The one-out double-layer pipe forming die as claimed in claim 1, wherein the outer die part comprises a first outer die body, a second outer die body, a die base and an outer layer shunt body which are connected in sequence; the mold core part comprises a spiral core, a shrinkage core and a fixed mold core which are connected in sequence; a melt flow channel formed between the spiral core and the first outer die body is a spiral section; a melt flow channel formed between the shrinkage core and the second outer mold body is a shrinkage section; and a melt flow passage formed among the fixed mold core, the neck mold base and the outer layer split flow body is a fixed section.
6. The dual-layer tubing mold of claim 5, wherein the outer layer melt channel is disposed in the outer layer manifold and merges into the shaping segment formed by the outer layer manifold and the shaping core.
7. The double-layer pipe forming die according to claim 5, wherein the first adjusting structure is an adjusting ring, the adjusting ring is installed between the first outer die body and the second outer die body, first adjusting screws are installed on two sides of the adjusting ring, and the first adjusting screws are installed at a connection position of the adjusting ring and the first outer die body.
8. The double-layer pipe forming die of claim 7, wherein a low-resistance washer is arranged between the adjusting ring and the second outer die body.
9. The two-layer pipe forming die according to claim 5, wherein the second adjusting structure is a second adjusting screw, and the second adjusting screw is disposed at a joint of the die base and the second outer die body.
10. The two-piece tubing mold of claim 5, wherein said die base is mounted to said second outer body by a die platen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120640081.7U CN214521834U (en) | 2021-03-29 | 2021-03-29 | One-out double-layer pipe forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120640081.7U CN214521834U (en) | 2021-03-29 | 2021-03-29 | One-out double-layer pipe forming die |
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| Publication Number | Publication Date |
|---|---|
| CN214521834U true CN214521834U (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120640081.7U Active CN214521834U (en) | 2021-03-29 | 2021-03-29 | One-out double-layer pipe forming die |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116901398A (en) * | 2023-06-29 | 2023-10-20 | 宁波方力科技股份有限公司 | Polyolefin thick-wall pipe extrusion die |
-
2021
- 2021-03-29 CN CN202120640081.7U patent/CN214521834U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116901398A (en) * | 2023-06-29 | 2023-10-20 | 宁波方力科技股份有限公司 | Polyolefin thick-wall pipe extrusion die |
| CN116901398B (en) * | 2023-06-29 | 2024-05-17 | 宁波方力科技股份有限公司 | Polyolefin thick-wall pipe extrusion die |
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