CN113858599A - Core-withdrawing turnover type plastic film blowing mechanism and core-withdrawing method thereof - Google Patents
Core-withdrawing turnover type plastic film blowing mechanism and core-withdrawing method thereof Download PDFInfo
- Publication number
- CN113858599A CN113858599A CN202111121204.7A CN202111121204A CN113858599A CN 113858599 A CN113858599 A CN 113858599A CN 202111121204 A CN202111121204 A CN 202111121204A CN 113858599 A CN113858599 A CN 113858599A
- Authority
- CN
- China
- Prior art keywords
- core
- withdrawing
- annular
- periphery
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 32
- 238000010096 film blowing Methods 0.000 title claims abstract description 22
- 239000002985 plastic film Substances 0.000 title claims abstract description 20
- 229920006255 plastic film Polymers 0.000 title claims abstract description 20
- 230000007306 turnover Effects 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000009415 formwork Methods 0.000 claims description 15
- 238000000926 separation method Methods 0.000 claims description 13
- 210000001503 joint Anatomy 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 238000003032 molecular docking Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 230000000994 depressogenic effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
-
- 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
- B29C33/30—Mounting, exchanging or centering
- B29C33/306—Exchangeable mould parts, e.g. cassette moulds, mould inserts
-
- 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
- B29C33/30—Mounting, exchanging or centering
- B29C33/308—Adjustable moulds
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
The invention discloses a core-withdrawing turnover type plastic film blowing mechanism and a core-withdrawing method thereof, wherein the core-withdrawing turnover type plastic film blowing mechanism comprises an annular mould shell, a withdrawing mould core and a withdrawing driving mechanism; the retreating type mold core descends first and then reverses and retreats, and can realize quick core retreating, so that the retreating type mold core cannot be blocked by an annular mold shell when rotating upwards to retreat and is separated smoothly and conveniently.
Description
Technical Field
The invention relates to a core-withdrawing turnover type plastic film blowing mechanism and a core-withdrawing method thereof.
Background
In the prior art, when a film is produced, plastic particles are melted by a film blowing machine, then the melted material is continuously heated to the most appropriate temperature required by film blowing, the melted material uniformly overflows from an annular interlayer, and then the melted material is blown into the plastic film by gas uniformly blown from the inside of the annular interlayer; however, the existing mold core is generally internally connected to the inside of the annular mold shell, when the mold core needs to be disassembled and cleaned, the mold core is inconvenient, and in addition, the existing film can not well control the discharge amount of the molten material of the film during film blowing, so that the specification of the film can not be reasonably controlled, and the use is not flexible.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the core-withdrawing turnover type plastic film blowing mechanism capable of realizing quick core-withdrawing cleaning and adjusting the discharge amount and the core-withdrawing method thereof are provided.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a core-withdrawing turnover type plastic film blowing mechanism comprises an annular mould shell, a withdrawing mould core and a withdrawing driving mechanism; the retreating type mold core is arranged inside the annular mold shell; an annular overflow cavity is defined between the outer side of the periphery of the retreating type mold core and the inner side of the periphery of the annular mold shell; a sealing ring is arranged on the periphery inside the lower end of the annular formwork; the inner sides of the periphery of the sealing ring are connected with the periphery of the lower end of the withdrawal type mold core in an abutting or separating way; the retreating driving mechanism is arranged below the annular mould shell and the retreating mould core; the retreating driving mechanism drives the retreating type mold core to move downwards from the annular mold shell and separate from the annular mold shell, and then the retreating type mold core is turned over to the outer side from the lower part of the annular mold shell.
Further, the retreating driving mechanism comprises a connecting column, a bottom ring body, a driving ring body, an external thread column, a butting column, a guide limiting rod, a positioning telescopic rod and a positioning cylinder; inserting channels are respectively arranged inside two sides of the lower end of the annular formwork; the lower end of the retreating type mold core is movably connected with the upper end of the butt joint column; the lower end of the butt-joint column is connected with an external thread column; two sides of the upper end of the butt-joint column are respectively provided with a guide limiting rod; the upper end of the guide limiting rod is connected in the inserting channel in a sliding and penetrating manner; the outer parts of two sides of the lower end of the annular formwork are respectively provided with a connecting column; the lower ends of the connecting columns are jointly provided with a bottom ring body; a driving ring body is rotatably clamped and mounted on the inner side of the bottom ring body; the periphery of the inner side of the driving ring body is provided with an internal thread ring surface; the inner side of the periphery of the driving ring body is in threaded sleeve joint with the outer side of the periphery of the external threaded column; a separation annular groove is formed in the outer side of the periphery of the butt-joint column; two sides of the upper end of the separation annular groove are respectively provided with a rotary concave groove; the inner sides of the lower ends of the connecting columns are respectively provided with a positioning cylinder; a positioning telescopic rod is respectively connected in the positioning cylinder in a sliding and penetrating manner; an elastic piece is sleeved on the positioning telescopic rod respectively, the elastic piece elastically supports and presses the positioning telescopic rod towards the inner side, the inner end of the positioning telescopic rod is abutted to the outer side face of the external thread column, and the outer end of the positioning telescopic rod extends to the outer side of the connecting column.
Further, an internal thread ring body is arranged at the lower end of the withdrawal type mold core; the upper end of the butt-joint column is provided with an external thread ring groove; the internal thread ring body is in threaded rotary connection with the external thread ring groove.
Further, a transverse vent groove is formed in the front side of the butt-joint column; a longitudinal vent groove is formed in the upper end of the butt-joint column; the lower end of the longitudinal vent groove is communicated with the inner end of the transverse vent groove; the upper end of the longitudinal ventilation groove extends to the middle of the upper end surface of the butt column; an exhaust channel is arranged in the middle of the retreating type mold core; the lower end of the exhaust channel is butted with the upper end of the longitudinal vent groove.
Furthermore, the outer sides of the periphery of the positioning telescopic rod are provided with abutting stop rings; two ends of the elastic piece are respectively and elastically abutted between the outer end of the inner part of the positioning cylinder and the abutting stop ring.
Further, the retreating type mold core is of a conical structure with a small upper part and a large lower part; a conical ring surface with a small upper part and a big lower part is arranged inside the annular formwork; an annular overflow cavity with a conical structure with a small upper part and a large lower part is formed between the outer sides of the periphery of the retreating mold core and the inner sides of the periphery of the annular mold shell.
Further, the lower end of the withdrawal type mold core is provided with a circular ring section; the inner sides of the periphery of the sealing ring are connected with the outer sides of the periphery of the circular ring section in an abutting or separating mode.
Further, a feeding groove is formed in one side of the annular formwork; the feeding groove is communicated with the annular overflow cavity through a feeding pipe.
A core withdrawing method of a core withdrawing turnover type plastic film blowing mechanism comprises the following steps: first-selected rotary drive ring body, utilize the upper end of direction gag lever post in the grafting passageway gliding action of down leading, make external screw thread post and the steady downstream of docking post, make and move back formula mold core and withdraw from below the annular die shell, when the drive ring body gets into the separation annular groove in docking post outside all around, through the action of gravity or stimulate the external screw thread post downwards, make the upper end of direction gag lever post break away from the grafting passageway, the telescopic link of fixing a position simultaneously makes its outer end butt in rotating the depressed groove through elasticity extrusion, so rotate the outer end of telescopic link in the location through rotating the depressed groove, make and move back formula mold core and carry out ninety degrees upsets, will move back formula mold core and follow the rotatory separation of external screw thread ring groove screw thread of butt post upper end through the internal thread ring body, realize moving back the core of formula mold core.
The invention has the following beneficial effects:
1. the invention realizes a structure of fast withdrawing cores, the withdrawing type mold core is withdrawn from the lower part of an annular mold shell through the rotation of a driving ring body, when the driving ring body enters a separating annular groove at the outer side of the periphery of a butt joint column, an external thread column is pulled downwards or under the action of gravity, the upper end of a guide limiting rod is separated from an inserting channel, and meanwhile, a positioning telescopic rod is extruded through elasticity to enable the outer end of the positioning telescopic rod to be abutted against a rotating concave groove, so that the outer end of the positioning telescopic rod rotates through the rotating concave groove, the withdrawing type mold core is overturned for ninety degrees, the withdrawing type mold core is separated from an external thread ring groove at the upper end of the butt joint column through the internal thread ring body in a threaded manner, the withdrawing of the withdrawing type mold core is realized, so that the withdrawing type mold core is withdrawn after descending and reversing firstly, and the withdrawing type mold core is not blocked by the annular mold shell when the withdrawing type mold core rotates upwards, the separation is smoother and more convenient; when needs are installed, outside pulling location telescopic link makes its inner end break away from and rotates the depressed groove, then directly with the upper end slip cross-under of direction gag lever post in the grafting passageway, through the rotatory drive ring body for drive ring body screw thread cup joints once more on the external screw thread post, makes external screw thread post and back-off formula mold core upwards remove, makes back-off formula mold core get into annular mould shell once more and realize going into the core.
2. The retreating type mold core is in a conical structure with a small upper part and a large lower part, the inner part of the annular mold shell is provided with a conical ring surface with a small upper part and a large lower part, and an annular overflow cavity with a conical structure with a small upper part and a large lower part is enclosed between the peripheral outer side of the retreating type mold core and the peripheral inner side of the annular mold shell.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1 according to the present invention.
FIG. 3 is a schematic view of the structure of the retractable core of the present invention when it is retracted from below the ring mold casing.
Fig. 4 is an enlarged schematic view of fig. 3 according to the present invention.
FIG. 5 is a schematic structural diagram of the retreating mold core of the present invention.
FIG. 6 is a schematic diagram of the construction of an externally threaded post and a docking post of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 6, a core-withdrawing turnover type plastic film blowing mechanism comprises an annular mould shell 1, a withdrawing mould core 2 and a withdrawing driving mechanism 3; the retreating type mold core 2 is arranged inside the annular mold shell 1; an annular overflow cavity 22 is defined between the outer side of the periphery of the retreating mold core 2 and the inner side of the periphery of the annular mold shell 1; a sealing ring 15 is arranged on the periphery inside the lower end of the annular formwork 1; the inner sides of the periphery of the sealing ring 15 are connected with the periphery of the lower end of the withdrawal type mold core 2 in an abutting or separating way; the retreating driving mechanism 3 is arranged below the annular mould shell 1 and the retreating mould core 2; the retreating driving mechanism 3 drives the retreating mold core 2 to move downwards from the annular mold shell 1 and separate from the annular mold shell 1, and then the retreating mold core 2 is turned over to the outer side from the lower part of the annular mold shell 1.
As shown in fig. 1 to 6, further, the retreating driving mechanism 3 includes a connecting column 32, a bottom ring 36, a driving ring 37, an external threaded column 31, a docking column 33, a guiding limiting rod 35, a positioning telescopic rod 34, and a positioning cylinder 38; inserting channels 11 are respectively arranged inside two sides of the lower end of the annular formwork 1; the lower end of the retreating type mold core 2 is movably connected with the upper end of the butt joint column 33; the lower end of the butt-joint column 33 is connected with an external thread column 31; two sides of the upper end of the butt-joint column 33 are respectively provided with a guide limiting rod 35; the upper end of the guide limiting rod 35 is connected in the inserting channel 11 in a sliding and penetrating mode; the outer parts of two sides of the lower end of the annular formwork 1 are respectively provided with a connecting column 32; the lower ends of the connecting columns 32 are jointly provided with a bottom ring body 36; a driving ring body 37 is rotatably clamped and mounted on the inner side of the bottom ring body 36; an internal thread ring surface is arranged around the inner side of the driving ring body 37; the inner side of the periphery of the driving ring body 37 is in threaded sleeve connection with the outer side of the periphery of the external threaded column 31; a separation annular groove 331 is formed in the outer side of the periphery of the butting column 33; the two sides of the upper end of the separation annular groove 331 are respectively provided with a rotary concave groove 332; the inner sides of the lower ends of the connecting columns 32 are respectively provided with a positioning cylinder 38; the positioning telescopic rods 34 are respectively connected in the positioning cylinders 38 in a sliding and penetrating manner; the positioning telescopic rod 34 is sleeved with an elastic piece 342, the elastic piece 342 elastically presses the positioning telescopic rod 34 inwards, the inner end of the positioning telescopic rod 34 is pressed against the outer side surface of the external threaded column 31, and the outer end of the positioning telescopic rod 34 extends to the outer side of the connecting column 32.
As shown in fig. 1 to 6, it is further preferable that the lower end of the withdrawal type mold core 2 is provided with an internal thread ring body 28; the upper end of the butt-joint column 33 is provided with an external thread ring groove 333; the internal thread ring body 28 is in threaded rotary connection with the external thread ring groove 333. Further, a transverse vent groove 334 is arranged on the front side of the docking post 33; a longitudinal vent groove 335 is formed in the upper end of the butt-joint column 33; the lower end of the longitudinal vent groove 335 is communicated with the inner end of the transverse vent groove 334; the upper end of the longitudinal ventilation groove 335 extends to the middle of the upper end surface of the docking post 33; an exhaust channel 21 is arranged in the middle of the retreating type mold core 2; the lower end of the exhaust channel 21 is butted against the upper end of the longitudinal vent groove 335. Further, the outer sides of the periphery of the positioning telescopic rod 34 are provided with abutting stop rings 341; the two ends of the elastic element 342 are respectively elastically abutted between the inner outer end of the positioning cylinder 38 and the abutting ring 341. Further, the retreating type mold core 2 is in a conical structure with a small upper part and a big lower part; a conical ring surface 14 with a small upper part and a big lower part is arranged inside the annular formwork 1; an annular overflow cavity 22 with a conical structure with a small upper part and a big lower part is enclosed between the outer side of the periphery of the retreating mold core 2 and the inner side of the periphery of the annular mold shell 1. Further, the lower end of the withdrawal type mold core 2 is provided with a circular ring section 23; the inner sides of the peripheries of the sealing rings 15 are connected with or separated from the outer sides of the peripheries of the circular ring-shaped sections 23. Further, a feeding groove 12 is arranged inside one side of the annular formwork 1; the feeding groove 12 is communicated with an annular overflow cavity 22 through a feeding pipe 13.
As shown in fig. 1 to 6, a core removing method of a core removing turnover type plastic film blowing mechanism comprises the following steps: firstly, the driving ring body 37 is rotated, the upper end of the guide limiting rod 35 is used for guiding and sliding downwards in the inserting channel 11, so that the external thread column 31 and the butt joint column 33 move downwards stably, the retreating type mold core 2 is retreated from the lower part of the annular mold shell 1, when the driving ring body 37 enters the separation annular groove 331 on the outer side of the periphery of the butt joint column 33, the external thread column 31 is pulled downwards through the gravity action, so that the upper end of the guide limiting rod 35 is separated from the inserting channel 11, meanwhile, the positioning telescopic rod 34 is extruded through elasticity to enable the outer end of the positioning telescopic rod to be abutted against the rotation concave groove 332, and the positioning telescopic rod 34 rotates in the rotation concave groove 332 to enable the retreating type mold core 2 to be overturned by ninety degrees, the retreating type mold core 2 is rotated and separated from the external thread groove 333 at the upper end of the butt joint column 33 through the internal thread ring body 28, and the retreating type mold core of the retreating type mold core is realized.
The invention realizes a structure of fast withdrawing the core, the withdrawing type mold core 2 is withdrawn from the lower part of the annular mold shell 1 by the rotation of the driving ring body 37, when the driving ring body 37 enters the separating annular groove 331 at the outer side of the periphery of the butting column 33, the external thread column 31 is pulled downwards or by the gravity action, the upper end of the guiding limit rod 35 is separated from the inserting channel 11, the positioning telescopic rod 34 is extruded by elasticity to enable the outer end to be butted in the rotating concave groove 332, the outer end of the positioning telescopic rod 34 is rotated by the rotating concave groove 332, the withdrawing type mold core 2 is turned for ninety degrees, the withdrawing type mold core 2 is rotated and separated from the external thread ring groove 333 at the upper end of the butting column 33 by the internal thread ring body 28, the withdrawing of the withdrawing type mold core 2 is realized, and the withdrawing type mold core 2 of the invention is withdrawn after being firstly lowered and then turned reversely, so that the withdrawing type mold core 2 is not blocked by the annular mold shell 1 when being rotated and withdrawn upwards, the separation is smoother and more convenient; when needs are installed, pull location telescopic link 34 to the outside and make its inner end break away from and rotate depressed groove 332, then directly with the upper end slip cross-under of direction gag lever post 35 in grafting passageway 11, through rotatory drive ring body 37 for drive ring body 37 screw thread cup joints on external screw thread post 31 once more, makes external screw thread post 31 and back-off formula mold core 2 upwards remove, makes back-off formula mold core 2 get into the realization core in the annular mould shell 1 once more.
The retreating type mold core 2 is in a conical structure with a small upper part and a large lower part, a conical ring surface with a small upper part and a large lower part is arranged inside the annular mold shell 1, and an annular overflow cavity 22 with a conical structure with a small upper part and a large lower part is enclosed between the outer side of the periphery of the retreating type mold core 2 and the inner side of the periphery of the annular mold shell 1, so that the annular overflow cavity becomes small when the retreating type mold core 2 moves upwards, and the annular overflow cavity becomes large when the retreating type mold core 2 moves downwards, the discharge amount of a molten material can be adjusted, and the specification of a thin film can be adjusted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A core-withdrawing turnover type plastic film blowing mechanism is characterized by comprising an annular mould shell, a withdrawing mould core and a withdrawing driving mechanism; the retreating type mold core is arranged inside the annular mold shell; an annular overflow cavity is defined between the outer side of the periphery of the retreating type mold core and the inner side of the periphery of the annular mold shell; a sealing ring is arranged on the periphery inside the lower end of the annular formwork; the inner sides of the periphery of the sealing ring are connected with the periphery of the lower end of the withdrawal type mold core in an abutting or separating way; the retreating driving mechanism is arranged below the annular mould shell and the retreating mould core; the retreating driving mechanism drives the retreating type mold core to move downwards from the annular mold shell and separate from the annular mold shell, and then the retreating type mold core is turned over to the outer side from the lower part of the annular mold shell.
2. The core-withdrawing turnover type plastic film blowing mechanism as claimed in claim 1, wherein the withdrawing driving mechanism comprises a connecting column, a bottom ring body, a driving ring body, an external thread column, a butt-joint column, a guiding limiting rod, a positioning telescopic rod and a positioning barrel; inserting channels are respectively arranged inside two sides of the lower end of the annular formwork; the lower end of the retreating type mold core is movably connected with the upper end of the butt joint column; the lower end of the butt-joint column is connected with an external thread column; two sides of the upper end of the butt-joint column are respectively provided with a guide limiting rod; the upper end of the guide limiting rod is connected in the inserting channel in a sliding and penetrating manner; the outer parts of two sides of the lower end of the annular formwork are respectively provided with a connecting column; the lower ends of the connecting columns are jointly provided with a bottom ring body; a driving ring body is rotatably clamped and mounted on the inner side of the bottom ring body; the periphery of the inner side of the driving ring body is provided with an internal thread ring surface; the inner side of the periphery of the driving ring body is in threaded sleeve joint with the outer side of the periphery of the external threaded column; a separation annular groove is formed in the outer side of the periphery of the butt-joint column; two sides of the upper end of the separation annular groove are respectively provided with a rotary concave groove; the inner sides of the lower ends of the connecting columns are respectively provided with a positioning cylinder; a positioning telescopic rod is respectively connected in the positioning cylinder in a sliding and penetrating manner; an elastic piece is sleeved on the positioning telescopic rod respectively, the elastic piece elastically supports and presses the positioning telescopic rod towards the inner side, the inner end of the positioning telescopic rod is abutted to the outer side face of the external thread column, and the outer end of the positioning telescopic rod extends to the outer side of the connecting column.
3. The core-withdrawing turnover type plastic film blowing mechanism as claimed in claim 2, wherein an internal thread ring body is arranged at the lower end of the withdrawing mold core; the upper end of the butt-joint column is provided with an external thread ring groove; the internal thread ring body is in threaded rotary connection with the external thread ring groove.
4. The core-withdrawing turnover type plastic film blowing mechanism as claimed in claim 3, wherein a transverse ventilation groove is formed in the front side of the butt-joint column; a longitudinal vent groove is formed in the upper end of the butt-joint column; the lower end of the longitudinal vent groove is communicated with the inner end of the transverse vent groove; the upper end of the longitudinal ventilation groove extends to the middle of the upper end surface of the butt column; an exhaust channel is arranged in the middle of the retreating type mold core; the lower end of the exhaust channel is butted with the upper end of the longitudinal vent groove.
5. The core-withdrawing turnover type plastic film blowing mechanism of claim 2, wherein the positioning telescopic rod is provided with a pressing stop ring on the outer side of the periphery; two ends of the elastic piece are respectively and elastically abutted between the outer end of the inner part of the positioning cylinder and the abutting stop ring.
6. The core-withdrawing turnover type plastic film blowing mechanism as claimed in claim 1, wherein the withdrawing mold core is in a conical structure with a small top and a big bottom; a conical ring surface with a small upper part and a big lower part is arranged inside the annular formwork; an annular overflow cavity with a conical structure with a small upper part and a large lower part is formed between the outer sides of the periphery of the retreating mold core and the inner sides of the periphery of the annular mold shell.
7. The core-withdrawing turnover type plastic film blowing mechanism as claimed in claim 6, wherein the lower end of the withdrawing mold core is provided with a circular ring-shaped section; the inner sides of the periphery of the sealing ring are connected with the outer sides of the periphery of the circular ring section in an abutting or separating mode.
8. The core-withdrawing turnover type plastic film blowing mechanism of claim 1, wherein a feeding groove is arranged inside one side of the annular formwork; the feeding groove is communicated with the annular overflow cavity through a feeding pipe.
9. The core withdrawing method of the core withdrawing turnover type plastic film blowing mechanism according to claim 3, characterized by comprising the following steps: first-selected rotary drive ring body, utilize the upper end of direction gag lever post in the grafting passageway gliding action of down leading, make external screw thread post and the steady downstream of docking post, make and move back formula mold core and withdraw from below the annular die shell, when the drive ring body gets into the separation annular groove in docking post outside all around, through the action of gravity or stimulate the external screw thread post downwards, make the upper end of direction gag lever post break away from the grafting passageway, the telescopic link of fixing a position simultaneously makes its outer end butt in rotating the depressed groove through elasticity extrusion, so rotate the outer end of telescopic link in the location through rotating the depressed groove, make and move back formula mold core and carry out ninety degrees upsets, will move back formula mold core and follow the rotatory separation of external screw thread ring groove screw thread of butt post upper end through the internal thread ring body, realize moving back the core of formula mold core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121204.7A CN113858599B (en) | 2021-09-24 | Core-withdrawing turnover type plastic film blowing mechanism and core withdrawing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111121204.7A CN113858599B (en) | 2021-09-24 | Core-withdrawing turnover type plastic film blowing mechanism and core withdrawing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113858599A true CN113858599A (en) | 2021-12-31 |
| CN113858599B CN113858599B (en) | 2024-06-07 |
Family
ID=
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205167540U (en) * | 2015-12-08 | 2016-04-20 | 江苏英普科电子材料有限公司 | High -efficient inflation film manufacturing machine is used in plastic film production |
| CN207808431U (en) * | 2018-01-30 | 2018-09-04 | 姚建珍 | A kind of electric wire Teflon coating extruded mould |
| CN110547810A (en) * | 2019-09-23 | 2019-12-10 | 江苏科华医疗器械科技有限公司 | Radial and axial double-floating type blood sampling device |
| CN210625268U (en) * | 2019-09-04 | 2020-05-26 | 南京乔康生物科技有限公司 | Drying device of flexible regulation formula vitamin C sodium phosphate |
| CN211882330U (en) * | 2020-03-13 | 2020-11-10 | 南京市第一医院 | Movable detachable protective mask |
| CN112010071A (en) * | 2020-07-27 | 2020-12-01 | 江苏中大包装材料有限公司 | Regulation formula film collector |
| CN213733380U (en) * | 2020-08-03 | 2021-07-20 | 荆州市松圣塑业有限公司 | Novel blowing die head is used in production of thermal contraction membrane |
| CN113400589A (en) * | 2021-07-29 | 2021-09-17 | 江苏亨通光电股份有限公司 | Mold for producing optical fiber sleeve |
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205167540U (en) * | 2015-12-08 | 2016-04-20 | 江苏英普科电子材料有限公司 | High -efficient inflation film manufacturing machine is used in plastic film production |
| CN207808431U (en) * | 2018-01-30 | 2018-09-04 | 姚建珍 | A kind of electric wire Teflon coating extruded mould |
| CN210625268U (en) * | 2019-09-04 | 2020-05-26 | 南京乔康生物科技有限公司 | Drying device of flexible regulation formula vitamin C sodium phosphate |
| CN110547810A (en) * | 2019-09-23 | 2019-12-10 | 江苏科华医疗器械科技有限公司 | Radial and axial double-floating type blood sampling device |
| CN211882330U (en) * | 2020-03-13 | 2020-11-10 | 南京市第一医院 | Movable detachable protective mask |
| CN112010071A (en) * | 2020-07-27 | 2020-12-01 | 江苏中大包装材料有限公司 | Regulation formula film collector |
| CN213733380U (en) * | 2020-08-03 | 2021-07-20 | 荆州市松圣塑业有限公司 | Novel blowing die head is used in production of thermal contraction membrane |
| CN113400589A (en) * | 2021-07-29 | 2021-09-17 | 江苏亨通光电股份有限公司 | Mold for producing optical fiber sleeve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113858599A (en) | Core-withdrawing turnover type plastic film blowing mechanism and core-withdrawing method thereof | |
| US2923975A (en) | Method for moulding a tube of plastic material | |
| CN113858599B (en) | Core-withdrawing turnover type plastic film blowing mechanism and core withdrawing method thereof | |
| CN212764701U (en) | Multi-layer extrusion mold opening and closing device of blow molding machine | |
| CN219683663U (en) | Bending forming equipment for processing air conditioner exhaust pipe | |
| CN116901399A (en) | Photovoltaic plastic conduit corner screw aircraft nose extrusion tooling | |
| CN208299345U (en) | Cable shield stripping-off device | |
| CN209216754U (en) | A kind of transformer iron core coiling device | |
| AU5967898A (en) | Cellulose food casing manufacturing method | |
| CN113829611B (en) | Floating adjustment type die head mechanism for thin film processing | |
| CN207156348U (en) | The mold mechanism that sliding block turns to | |
| CN210705872U (en) | Injection mold for internal thread part | |
| CN205915653U (en) | Moulding utensil is crowded to thin wall sheath | |
| CN220242391U (en) | Plastic film blow molding preparation facilities | |
| CN113134952B (en) | Injection mold with automatic demoulding mechanism | |
| CN111055478A (en) | Flow regulating device for molding runner of pipe blank plastic uptake mold | |
| CN216329932U (en) | Core mould capable of adjusting wall thickness of plastic pipe on line | |
| CN110722721A (en) | Mould convenient for rapid demoulding for manual pliers processing | |
| CN218876157U (en) | Plastic roller injection mold | |
| CN106363394B (en) | A kind of environment-friendly type pen core recycling machine people | |
| CN113183424B (en) | Spiral blowing die, demolding forming process and tubular element | |
| CN220499918U (en) | Plastic floating ball production and processing plastic blow molding machine capable of preventing caking | |
| CN220198550U (en) | Thickness adjusting structure of plastic bag film blowing machine | |
| CN114147933B (en) | Manufacturing device and manufacturing method of bundling pipe | |
| CN113386333B (en) | High barrier film manufacture equipment for medicine packaging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |