CN108274722B - Tail pressing device of on-line forming flaring module of corrugated pipe double-layer faucet - Google Patents
Tail pressing device of on-line forming flaring module of corrugated pipe double-layer faucet Download PDFInfo
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- CN108274722B CN108274722B CN201810347477.5A CN201810347477A CN108274722B CN 108274722 B CN108274722 B CN 108274722B CN 201810347477 A CN201810347477 A CN 201810347477A CN 108274722 B CN108274722 B CN 108274722B
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- corrugated pipe
- flaring
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- 238000003825 pressing Methods 0.000 title description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 19
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 18
- 230000000694 effects Effects 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 14
- 239000012768 molten material Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- 238000010030 laminating Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
- B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C57/00—Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
- B29C57/02—Belling or enlarging, e.g. combined with forming a groove
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/18—Pleated or corrugated hoses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
The invention provides a device for compacting the tail of a corrugated pipe double-layer bell and spigot online molding flaring module, which is formed by sequentially connecting a circulating corrugated pipe common module, a flaring module and a special module with a spigot from front to back, connecting a double-wall corrugated pipe extrusion head assembly with a water jacket, shortening the distance between an outer wall melt extrusion die opening and an inner wall melt extrusion die opening of a double-wall corrugated pipe extrusion head to the position where the two die openings are close to each other, and arranging at least one special wavelet at the tail of the flaring module. The invention optimizes the prior art, the produced pipe saves raw materials, can effectively improve the molding quality of the standard waveform head, has good molding effect of the whole pipe and good quality of the inner surface and the outer surface, and realizes that the flaring double-wall corrugated pipe with the maximum effective length is produced by using the least modules of the same specification molding machine.
Description
Technical Field
The invention belongs to the field of corrugated pipe manufacturing, and particularly relates to a tail pressing device of a flaring module for online molding of a double-layer bell and spigot of a corrugated pipe.
Background
In the manufacturing field of corrugated pipes, particularly in the production process of large-caliber high-density polyethylene corrugated pipes, an inner wall melt extrusion die opening and an outer wall melt extrusion die opening are generally arranged on a double-wall corrugated pipe extruder head, but the two die openings are far apart, and the melt extruded through the two die openings has the defects of long cooling time, poor double-layer welding, unstable product quality, low production efficiency, complex structure of the double-wall corrugated pipe extruder head, difficult manufacture and maintenance and the like.
For this structure, some manufacturers on the market put forward improvement schemes, namely, holes are formed between two die openings with a far distance from the machine head, so that a closed space formed between the melted materials on the inner wall and the outer wall and the die opening of the machine head in the pipe extrusion process is connected with an external compressed gas storage, and the pressure change in the space is regulated by the compressed gas storage.
The module is an important component in a forming machine on a plastic pipe production line, and has the function of solidifying and shaping the molten material together with the machine head after the molten material is conveyed into a module cavity of the forming machine by the machine head of the extruder, wherein the module cavity is designed according to the requirements of customers, so that the needed plastic pipe is obtained after the solidified material comes out of the module cavity of the forming machine.
In addition, when producing the plastic pipe with the flaring section, a flaring module is needed, wherein the beginning end of the flaring module for producing the flaring pipe is the head of the flaring module, and the end of the flaring module for producing the flaring module is the tail of the flaring module. The tail part of the traditional flaring module is designed to be directly connected with the standard module, namely, after the whole tube is molded, a part of the tail single-wall flaring tube is cut off, and the head part of the double-wall corrugated tube part of the standard unit tube is obtained. Because the tail part of the flaring is directly connected with the head part of the standard corrugated pipe, gas in the cavity of the flaring section in the flaring section forming process can break through the wall of the standard corrugated pipe when the standard double-wall corrugated pipe is produced due to uneven pressure, and the defect of poor forming quality of the head part of the double-wall corrugated pipe is caused.
Disclosure of Invention
The technical problem solved by the invention is to provide the tail pressing device of the online molding flaring module for the double-layer bell and spigot of the corrugated pipe, which has the advantages of simple structure, reliable operation, good double-layer welding property and good molding quality of the part of the corrugated pipe at the tail of the flaring. Shortens the time difference of cooling the molten materials on the inner wall and the outer wall, and improves the welding quality of the inner wall and the outer wall of the corrugated pipe.
The technical scheme adopted by the invention is as follows: the utility model provides a corrugated pipe double-deck bell and spigot on-line forming flaring module afterbody closing device, is connected in proper order from front to back by the common module of corrugated pipe of circulation operation, flaring module and the special module of taking the socket, and double-wall corrugated pipe extrusion aircraft nose subassembly and water jacket are connected, and the distance of the outer wall melt extrusion die mouth of double-wall corrugated pipe extrusion aircraft nose and the inner wall melt extrusion die mouth shortens gradually to these two die mouths next-door neighbour's position, and the afterbody of flaring module is equipped with at least one special wavelet. The special wavelet is followed by a normal standard module. When the whole pipe is cut, the tail part of the flaring section and the special wavelet part are cut off together, so that the starting end of the standard pipe can be obtained.
The wave height of the special wavelet is smaller than the standard wave height, the wave distance is smaller than the standard wave distance, and the wave trough pressing point is lower than the wave trough pressing point of the standard corrugated pipe. After the pipe flaring section is molded, molding gas extrudes the hot-melt material and is tightly locked by a special wavelet type cavity on the module when the pipe flaring section is molded by special wavelet, preferably, the dual locking guarantee is formed by adopting two special wavelet shapes, so that even if the hot-melt material is broken by pressurized gas, defects are caused in the molding process of the special wavelet, but the gas is released by a certain pressure, and good waveform quality can be ensured when the pipe flaring section is molded by standard waveform. The tail part of the flaring and the two special wavelet parts are cut off, so that even if the special wavelet is bad in quality, the quality of the normal pipe is not affected.
The upper outer die lip and the lower outer die lip of the double-wall corrugated pipe extruder head assembly are connected together to form an outer die lip, a gap between the outer die lip and the middle die lip after assembly is an outer wall melt extrusion die, and a gap between the middle die lip and the inner die lip after assembly is an inner wall melt extrusion die.
An inclined pipeline is arranged in the middle die lip, and the inner wall melt extrusion die opening and the outer wall melt extrusion die opening are closely adjacent to the upper side and the lower side of the inclined pipeline.
Be equipped with the cooling stick core on the water jacket, be equipped with vertical pipeline between water jacket and the centre form lip, send into compressed air through vertical pipeline between cooling stick core and the inner wall melt, under the effect of inside atmospheric pressure, the outside wall melt orientation skew of inner wall melt to air between the inside and outside wall melt is discharged gradually through vertical pipeline, and inside and outside wall melt laminating and fusing together.
The corrugated pipe common module, the flaring module and the special module with the faucet are provided with vacuumizing holes or a plurality of groups of vacuumizing holes and cooling water channels or a plurality of groups of cooling water channels, and the inner wall and outer wall molten materials are attached to the contour curve of the faucet of the forming module together under the adsorption action of the inner pressure and the vacuum channels on the forming module, and the heat is taken away by the circulating cooling water in the cooling channels on the forming module to be cooled and formed into a double-layer faucet area.
The invention has the beneficial effects that the prior art is optimized, the pipe produced by the structure of the invention saves raw materials, can effectively improve the molding quality of the standard waveform head, has good molding effect on the whole pipe and good internal and external surface quality, and realizes that the flaring double-wall corrugated pipe with the maximum effective length is produced by using the least modules of the same specification molding machine.
In addition, the mechanical property is good, the quality of the online manufactured double-layer faucet is stable, the production efficiency is high, and the double-wall corrugated pipe extruder head is simple in structure, convenient to produce, process and maintain and reliable in operation.
Drawings
FIG. 1 is a schematic diagram of a tail compression device of an online forming flaring module of a corrugated pipe double-layer faucet.
Fig. 2 is an enlarged view of fig. 1A.
Fig. 3 is a working schematic diagram of a tail pressing device of an online molding flaring module of a double-layer bell and spigot of a corrugated pipe.
Fig. 4 is an enlarged view of fig. 3B.
Reference numerals: 1-a corrugated pipe common module 2-a cooling channel 3-a flaring module 4-a vacuumizing hole 5-a special module 6 with a socket, an outer wall melt extrusion die 7-an inclined pipeline 8-an inner wall melt extrusion die 9-a vertical pipeline 10-an inner cooling channel; 11-cooling rod core 12-water jacket 13-flaring module tail 14-special wavelet 15-upper outer die lip 16-lower outer die lip 17-double-wall corrugated pipe extrusion head 18-middle die lip 19-inner die lip 20-pipe 21-flaring module head 22-flaring module tail wave 23-standard wave
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in fig. 1 and 2, the invention relates to a device for compacting the tail of a corrugated pipe double-layer bell and spigot online molding flaring module, which is formed by sequentially connecting a corrugated pipe common module 1, a flaring module 3 and a special module 5 with a spigot which are in circulation operation from front to back, connecting a double-wall corrugated pipe extruder head 17 assembly with a water jacket 12, gradually shortening the distance between an outer wall melt extrusion die orifice 6 and an inner wall melt extrusion die orifice 8 of the double-wall corrugated pipe extruder head 17 to the position close to the two die orifices, and arranging two special wavelets 14 at the tail of the flaring module 3. The special wavelet 14 is followed by a normal standard wave 23. When the whole pipe is cut, the tail part of the flaring section and the two special wavelets 14 are cut off together, so that the starting end of the standard pipe can be obtained. The invalid length of the flaring section of the flaring module 3 is shortened, materials are saved, and the hidden trouble that the standard corrugated pipe head is easy to have poor forming quality due to the existence of the special wavelet 14 is eliminated, so that the forming quality of the double-wall corrugated pipe is ensured. The head of the standard corrugated pipe with poor molding quality is avoided from being cut off excessively, and the production time and the production raw materials are saved. On the production line, the continuously produced double-wall corrugated pipes are cut in the double-layer bell and spigot and special wavelet 14 areas, and each double-wall corrugated pipe is provided with a double-layer bell and spigot area, so that the double-wall corrugated pipes can be conveniently connected in a butt joint mode in engineering construction.
The flaring module 3 shortens the ineffective length of the flaring end during design, thereby reserving the position for arranging the special wavelet 14, as shown in fig. 3 and 4. Two special wavelets 14 are designed at this location, occupying the inactive length of the flared section, the wave height of the special wavelets 14 is less than the standard wave height, the wave pitch is less than the standard wave pitch, and the trough nip point is lower than the trough nip point of the standard wave 23. Preferably, the wave height of the special wavelet 14 is 0.3-0.8 times that of the standard wave, the wave pitch is 0.3-0.8 times that of the standard wave, and the trough pressing point is 0.5-2 mm lower than that of the standard wave 23. After the pipe flaring section is molded, molding gas extrudes the hot-melt material and is tightly locked by a special wavelet 14 cavity on a module when the pipe flaring section is molded by the special wavelet 14, and the two special wavelets 14 form double locking guarantee, so that even if pressurized gas breaks the hot-melt material, defects are caused in the molding process of the special wavelets 14, but the gas is released by a certain pressure, and good waveform quality can be ensured when the pipe flaring section is molded by the standard wave 23. The tail part 13 of the flaring module and the special wavelet 14 are cut off, so that the quality of the normal pipe 20 is not affected even if the pipe quality of the special wavelet 14 is poor.
The upper outer die lip 15 and the lower outer die lip 16 of the double-wall corrugated tube extruder head 17 assembly are connected together to form an outer die lip, the assembled gap between the outer die lip and the middle die lip 18 is the outer wall melt extrusion die opening 6, and the assembled gap between the middle die lip 18 and the inner die lip 19 is the inner wall melt extrusion die opening 8.
The middle die lip 18 is internally provided with an inclined pipeline 7, and the inner wall melt extrusion die 8 and the outer wall melt extrusion die 6 are closely adjacent to the upper side and the lower side of the inclined pipeline 7.
The water jacket 12 is provided with a cooling rod core 11, a vertical pipeline 9 is arranged between the water jacket 12 and an inner mold lip 19, compressed air is fed between the cooling rod core 11 and inner wall molten materials through the vertical pipeline 9, the inner wall molten materials deviate towards the outer wall molten materials under the action of internal air pressure, and air between the inner wall molten materials and the outer wall molten materials is gradually discharged through the vertical pipeline 9, and the inner wall molten materials and the outer wall molten materials are attached and fused together.
The corrugated pipe common module 1, the flaring module 3 and the special module 5 with the faucet are provided with a plurality of groups of vacuumizing holes 4 and a plurality of groups of cooling water channels 2. The molten materials on the inner wall and the outer wall are adhered to the contour curve of the bell and spigot of the forming module together under the adsorption action of the vacuum pore canal 4 on the forming module, and the heat is taken away by the circulating cooling water in the cooling channel 2 on the forming module to be cooled and shaped into a double-layer bell and spigot area.
When the device works, the outer wall melt extrusion die 6 and the inner wall melt extrusion die 8 on the double-wall corrugated pipe extruder head 17 are relatively close to each other (refer to an enlarged view A, the distance between the two die openings is only the width of one wavelet), the melt extruded through the two die openings has short cooling time and small temperature difference between the inner layer melt and the outer layer melt, so that the double-layer melt is well welded, the product quality is ensured, and the double-wall corrugated pipe extruder head 17 has a simple structure and is convenient to process. The water jacket 12 is arranged in front of the double-wall corrugated pipe extruder head 17 and is used for cooling the inner wall of the formed pipe.
When manufacturing double-deck socket joint portion, compressed air gets into between the inner wall melt in cooling bar core 11 and inner wall melt extrusion die 8 through vertical pipeline 9, and under the effect of internal atmospheric pressure, the outer wall melt skew in the outer wall melt extrusion die 6 of inner wall melt, and the air between the inner and outer wall melt is discharged gradually through vertical pipeline 9, and inner and outer wall melt laminating and fusion splice together, under the adsorption of the evacuation hole 4 on interior pressure and flaring module 3, laminating is on the contour curve of shaping module bell and spigot, and its heat is taken away and is cooled gradually the design by the circulating cooling water in the cooling channel 2 on ordinary module 1 and the flaring module 3 and becomes double-deck bell and spigot district.
The common module design and arrangement method for producing the pipes with the same diameter specification is to arrange a pair of flaring modules after a plurality of pairs of conventional corrugated modules are arranged in sequence, and the whole modules are well distributed from the flaring starting end to the end of each flaring module. In the pipe molding process, all the modules perform periodic motion according to a preset track line, so that the whole pipe with the connected corrugated section and the flaring section is molded. And then cutting off the tail part of the flaring section and a plurality of sections of corrugated pipes with a certain length immediately behind the flaring section on line through a cutting saw on a pipe production line, thereby obtaining the whole plastic corrugated pipe with the flaring section with the same length.
When the special wavelet 14 at the tail part of the flaring module is connected with the special wavelet 14 at the tail part of the flaring module in the optimal design of the invention, and when two special wavelets 14 and common corrugated pipe parts behind a faucet are manufactured on line, when the common corrugated pipe module 1 or the special corrugated pipe module 5 with the faucet runs to the position of a melt extrusion die opening of an extruder, compressed air enters into melt cavities of inner and outer walls through a pipeline 7, the inner wall melt is attached to a cooling rod core 11 under the action of air pressure, the outer wall melt is attached to the profile curve of the corrugated pipe 1 of the forming module, the heat of the inner wall and the outer wall is taken away by circulating water in an inner cooling channel 10 and a cooling channel 2 respectively, and the inner wall and the outer wall are solidified together after being cooled.
As shown in fig. 3, the corrugated pipe 20 with flares to be formed is a plastic double-wall corrugated pipe with flares formed on line by a module on a forming machine, a plurality of common corrugated pipe modules 1, a flaring module 3 and a special module 5 with a socket are sequentially arranged on a die frame of the forming machine, all the modules sequentially move on the forming machine according to a fixed movement track, one module serves as a reference, when the module appears from a certain position, and then the module appears at the position next time, all the modules complete a running period, and the formed pipe is a fixed unit-length pipe, so that uninterrupted on-line production of the pipe can be completed. When the pipe passes between the tail of the flaring module and the next standard module, the existence of two special wavelets 14 limits the corrugated section with poor quality possibly occurring in the forming process to the position where the special wavelets 14 occur, and the tail 13 of the flaring section of the corrugated pipe and the special wavelets 14 are parts which need to be cut off in design, thereby ensuring the forming quality of the whole corrugated pipe.
Claims (1)
1. The utility model provides a corrugated pipe double-deck bell and spigot on-line forming flaring module afterbody closing device, is connected in proper order from front to back by the common module of corrugated pipe (1) of circulation operation, flaring module (3) and special module (5) of taking the socket, and double-walled bellows extruder head (17) are connected with water jacket (12), and the distance of outer wall melt extrusion die mouth (6) and inner wall melt extrusion die mouth (8) of double-walled bellows extruder head (17) shortens gradually to these two die mouthful next-door neighbour's position, its characterized in that: the tail of flaring module (3) is equipped with at least one special wavelet (14), the wave height of special wavelet (14) is less than standard wave height, and the wave distance is less than standard wave distance, and the wave trough pressure point is lower than standard bellows wave trough pressure point, outer die lip is constituteed together with outer die lip (16) on last outer die lip (15) of double-walled bellows extruder head (17), clearance after outer die lip and middle die lip (18) assembly is outer wall melt extrusion die orifice (6), clearance after middle die lip (18) and interior die lip (19) assembly is inner wall melt extrusion die orifice (8), be equipped with cooling stick core (11) on water jacket (12), be equipped with vertical pipeline (9) between water jacket (12) and the interior die lip (19), be equipped with multiunit vacuum-pumping hole (4) and multiunit cooling water passageway (2) on bellows ordinary module (1), flaring module (3) and the special module (5) of taking the socket, be equipped with inclined pipeline (7) in middle die lip (18), the inner wall (8) and the melt extrusion die orifice (8) of both sides of extruding on the inclined pipeline (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810249939X | 2018-03-26 | ||
| CN201810249939 | 2018-03-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108274722A CN108274722A (en) | 2018-07-13 |
| CN108274722B true CN108274722B (en) | 2023-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810347477.5A Active CN108274722B (en) | 2018-03-26 | 2018-04-18 | Tail pressing device of on-line forming flaring module of corrugated pipe double-layer faucet |
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| CN (1) | CN108274722B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109849315A (en) * | 2018-11-30 | 2019-06-07 | 贵阳兴塑科技股份有限公司 | A kind of corrugated pipe forming machine and the bellows production technology based on corrugated pipe forming machine |
| CN111037869A (en) * | 2019-06-04 | 2020-04-21 | 安徽富通塑业科技有限公司 | HDPE large-caliber double-wall corrugated pipe online flaring method |
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| CN1419493A (en) * | 2001-03-02 | 2003-05-21 | 曼夫瑞德·A·A·鲁波克 | Method and device for producing a double-walled thermoplastic pipe with integral pipe bell |
| CN1515402A (en) * | 2003-08-26 | 2004-07-28 | 甘国工 | Method for forming integrated double-wall bell socket of plastic corrugated pipe forming machine and its equipment |
| CN2700091Y (en) * | 2003-12-24 | 2005-05-18 | 大连高新园区三垒塑料机械工程有限公司 | Online forming device for double layer socket joint of plastic corrugated pipe |
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