CN116572518A - Film blowing mechanism of film blowing machine - Google Patents
Film blowing mechanism of film blowing machine Download PDFInfo
- Publication number
- CN116572518A CN116572518A CN202310854856.4A CN202310854856A CN116572518A CN 116572518 A CN116572518 A CN 116572518A CN 202310854856 A CN202310854856 A CN 202310854856A CN 116572518 A CN116572518 A CN 116572518A
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- China
- Prior art keywords
- exhaust
- ventilation pipe
- pipe
- film blowing
- film
- 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.)
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- 238000010096 film blowing Methods 0.000 title claims abstract description 51
- 238000009423 ventilation Methods 0.000 claims abstract description 71
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 239000012528 membrane Substances 0.000 description 28
- 238000001125 extrusion Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000004033 plastic Substances 0.000 description 6
- 238000007664 blowing Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/006—Degassing moulding material or draining off gas during moulding
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C2037/94—Safety devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention relates to the technical field of film blowing equipment, and particularly discloses a film blowing mechanism of a film blowing machine, which comprises the following components: the film blowing mechanism comprises a ventilation pipe, a driving assembly and a guide piece, wherein an air inlet is formed in the bottom of the ventilation pipe, an exhaust pipe is arranged on the lower side of the ventilation pipe, the guide piece is arranged between the ventilation pipe and the exhaust pipe, a plurality of guide pieces used for guiding airflow to flow downwards are uniformly arranged on the top end of the ventilation pipe, the driving assembly comprises a driving source and a driving shaft, the driving shaft is fixed relative to the inner wall of the ventilation pipe in the ventilation pipe, each guide piece is meshed with the peripheral side of the ventilation pipe, the driving shaft drives each guide piece to rotate through the ventilation pipe, the upper end of the guide piece is attached to the outer wall of the ventilation pipe, a gap is reserved between the lower end of the guide piece and the exhaust pipe, and a ventilation groove is formed in the guide piece.
Description
Technical Field
The invention relates to the technical field of film blowing equipment, in particular to a film blowing mechanism of a film blowing machine.
Background
The plastic particles are heated and melted and then blown into a film by the film blowing machine, the plastic particles are extruded by the extrusion mechanism after being heated and melted in the working process of the film blowing machine, the plastic body is blown and attached to a certain shape by the film blowing mechanism, the plastic body is folded by the herringbone mold folding clamping roller at the top end, and finally the plastic film is pulled by the traction machine according to a certain speed, and the plastic film is wound into a roll by the winding machine to prepare a final adhesive film finished product.
In the related art, a film blowing mechanism of a film blowing machine mainly blows film to a plastic body through air inlet of an air ring, a traditional air ring is provided with 4-8 air inlets so as to achieve the purpose of uniform air inlet, for example, patent document with publication number of CN216635373U discloses a film blowing machine air ring structure, which comprises an air cavity bottom ring, the outer wall of the air cavity bottom ring is in sealing connection with the inner wall of a lower outer ring, the upper end of the outer wall of the lower outer ring is in sealing connection with an upper outer ring, the inner wall of the upper outer ring is in sealing connection with the outer wall of the air cavity upper ring, an inner ring is further arranged between the air cavity upper ring and the air cavity bottom ring, a lower air inlet is arranged between the air cavity upper ring and the inner ring, the air inlets are uniformly arranged on the outer wall of the lower outer ring, and the bottom end of the inner wall of the lower outer ring is provided with a vertical flow blocking plate;
above-mentioned patent document provides wind ring structure improves the wind pressure through the stifled flow board, and the last wind gap and the lower wind gap that the inner loop both sides set up are used for lasting stable cooling to the membrane bubble, and the outer wall of outer loop evenly sets up a plurality of air inlets down, and each air inlet is difficult to guarantee the uniformity of a plurality of air inlets in the course of the work, causes the intake to have certain difference, and then leads to the fact the influence to the degree of consistency of membrane bubble film formation.
Disclosure of Invention
The invention provides a film blowing mechanism of a film blowing machine, and aims to solve the problem that in the film blowing mechanism in the related art, the uniformity of expansion of film bubbles is affected due to uneven air quantity of a plurality of air inlets.
The invention provides a film blowing mechanism of a film blowing machine, which is used for being arranged on a frame of the film blowing machine, and comprises:
the bottom of the ventilation pipe is provided with an air inlet, the lower side of the ventilation pipe is provided with an exhaust pipe, the ventilation pipe is connected with the exhaust pipe through a flow guide piece, a plurality of flow guide pieces are uniformly arranged on the peripheral side of the top end of the ventilation pipe, and each flow guide piece comprises a shell and flow guide blades arranged in the shell;
the driving assembly comprises a driving source and a driving shaft, the driving end of the driving source is connected with the driving shaft, the driving shaft is sleeved in the ventilation pipe, the driving shaft is coaxially arranged with the ventilation pipe, the driving shaft is relatively fixed with the ventilation pipe, the upper end of the ventilation pipe and the shell of each drainage piece are correspondingly in a tooth-shaped structure, and each drainage piece is meshed with the air inlet pipe;
the air guide device comprises an air guide piece, wherein the air guide piece is provided with a through hole in the axial direction, the air guide piece is sleeved outside the ventilation pipe and the exhaust pipe through the through hole in the air guide piece, the upper end of the air guide piece is attached to the outer wall of the ventilation pipe, a gap is reserved between the exhaust pipe and the through hole of the air guide piece, and an air ventilation groove is formed in the air guide piece.
Preferably, the diameter of the flow guiding member is reduced from the middle part to the two ends of the flow guiding member in the longitudinal direction, a plurality of ventilation grooves are formed, the ventilation grooves are longitudinally arranged at intervals at the lower end of the flow guiding member, and the ventilation grooves are arranged along the radial direction of the flow guiding member.
Preferably, the upper end of the flow guiding piece is provided with a flow guiding groove, so that one side facing the exhaust pipe is the inner side, and the flow guiding groove is obliquely arranged from top to bottom and from inside to outside.
Preferably, the periphery of the ventilation pipe is also provided with a protection assembly, the protection assembly comprises a protection barrel, the protection barrel is used for being covered on the outer side of the membrane bubble, the upper end and the lower end of the protection barrel are correspondingly provided with a plurality of fans, and the rotating speed of the lower fan is smaller than that of the upper fan, so that the pressure intensity in the membrane bubble and the pressure intensity in the outer side are balanced.
Preferably, the diameter of the bottom of the protective cylinder is reduced from top to bottom to form a circular truncated cone shape, and an opening at the bottom of the protective cylinder is used for corresponding to a die outlet of the die head assembly.
Preferably, the protection cylinder is composed of two semi-cylindrical connecting pieces, and the two connecting pieces are movably connected.
Preferably, the protection section of thick bamboo top is equipped with the herringbone board, herringbone board below is equipped with exhaust assembly, exhaust assembly includes exhaust piece and exhaust blade, exhaust piece be in herringbone board below with the shape of herringbone board corresponds, exhaust piece upper end is equipped with the gas vent, exhaust blade locates exhaust piece below, the drive shaft vertically upwards extends to exhaust piece lower extreme, exhaust blade fixes the upper end of drive shaft.
Preferably, the herringbone plate comprises two herringbone brackets which are longitudinally arranged oppositely, the two brackets are connected through a plurality of guide cylinders, the cylinder body part of each guide cylinder is used for being attached to a membrane bubble, and the guide cylinders are assembled with the brackets in a relative rotation mode.
Preferably, an annular mounting plate is fixed on the peripheral side of the upper end of the ventilation pipe, a plurality of mounting holes are uniformly formed in the mounting plate, and each drainage piece is correspondingly mounted in each mounting hole.
Preferably, the lower end of the ventilation pipe is connected with an air inlet pipe, the air inlet pipe is sleeved outside the exhaust pipe, the upper end of the air inlet pipe is communicated with the ventilation pipe, and the lower end of the air inlet pipe is connected with a blowing device.
The beneficial effects of the invention are as follows:
(1) The uniformity of air inlet in the film blowing operation is improved, the air inlet pipe is arranged on the inner side of the film bubble, the ventilation pipe leads air flow to the upper side, and under the drainage effect of a plurality of drainage pieces, the air flow discharged by the ventilation pipe flows from top to bottom, so that the uniformity of the air flow is improved, the air flow has a gradual pressure stabilizing process when flowing from top to bottom, the continuous stable film blowing of the film bubble is realized, and the film forming quality of the film bubble is improved.
(2) Through setting up the protection component, further prevent that the membrane bubble bottom from receiving the high temperature effect deformation of die head subassembly, the setting of protection component is used for forming a relatively balanced pressure environment inside and outside the membrane bubble, reduces the influence of high temperature to the membrane bubble lower extreme, improves the film forming quality of membrane bubble, avoids the membrane bubble to lead to the problem that the fold appears pressing because of the bottom over-expansion.
(3) The exhaust effect of the membrane bubble in the membrane pressing process is improved, the air residue in the membrane bubble extrusion process is reduced to the maximum extent, the folds of the membrane bubble are further reduced, and the membrane bubble pressed membrane quality is ensured.
Drawings
Fig. 1 is a schematic perspective view of a film blowing mechanism provided by the invention installed relative to a film blowing machine.
Fig. 2 is a longitudinal cross-sectional view of the film blowing mechanism provided by the invention.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic perspective view of a deflector according to the present invention.
FIG. 5 is a schematic perspective view of the installation of the drainage and exhaust assembly of the present invention relative to the drive shaft.
Reference numerals:
1. a frame; 11. a feed cylinder; 12. an extrusion mechanism; 13. a die assembly; 14. a herringbone plate; 2. a ventilation pipe; 21. an air inlet pipe; 211. a blower device; 22. an exhaust tube; 221. an air extraction device; 23. a flow guide; 231. a ventilation groove; 232. a diversion trench; 24. a drainage member; 241. a mounting plate; 3. a driving source; 31. a drive shaft; 311. an exhaust vane; 4. a protective cylinder; 41. a fan; 5. an exhaust member; 51. an exhaust port; 52. an air outlet; 6. and (5) membrane soaking.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
Embodiment one: as shown in fig. 1 to 5, the film blowing mechanism provided by the invention is arranged on a film blowing machine, the film blowing machine is also provided with a feeding barrel 11, an extrusion mechanism 12 and a die head assembly 13, the discharging end of the feeding barrel 11 is connected with the extrusion mechanism 12, the extrusion mechanism 12 is connected with the film blowing mechanism through the die head assembly 13, plastic particles enter the extrusion mechanism 12 from the feeding barrel 11, are further melted in the extrusion mechanism 12 and are extruded through the die head assembly 13, the die head assembly 13 is provided with a die outlet, and the film blowing mechanism is used for blowing raw materials extruded by the die head assembly 13 into a cylinder shape.
The film blowing mechanism comprises a ventilation pipe 2, an air inlet pipe 21 and an exhaust pipe 22 which are longitudinally and coaxially arranged, wherein an air inlet is formed in the lower end of the ventilation pipe 2, air flow entering from the air inlet is discharged through the upper end of the ventilation pipe 2, as shown in fig. 5, a plurality of drainage pieces 24 are uniformly arranged on the periphery of the upper end of the ventilation pipe 2, the drainage pieces 24 are used for guiding air flow discharged by the ventilation pipe 2 to flow downwards, each drainage piece 24 comprises a shell and drainage blades, the drainage blades are fixed in the shell, the outer side wall of the shell is of a tooth-shaped structure, tooth-shaped structures corresponding to the shells are formed on the outer side of the upper end of the ventilation pipe 2, an annular plate-shaped mounting plate 241 is fixed on the periphery of the ventilation pipe 2, a plurality of mounting holes are formed in the mounting plate 241, annular mounting parts are arranged at the lower ends of the drainage pieces 24 in an extending mode along the height direction of the ventilation pipe, and the drainage pieces 24 are movably sleeved in the mounting holes through the mounting parts respectively.
The film blowing mechanism further comprises a driving assembly, the driving assembly comprises a driving source 3 and a driving shaft 31, the driving end of the driving source 3 is connected with the driving shaft 31, the driving shaft 31 is coaxially arranged with the ventilation pipe 2, the driving shaft 31 is sleeved in the ventilation pipe 2, the driving shaft 31 is relatively fixed with the ventilation pipe 2, the upper end of the ventilation pipe 2 is connected with the driving shaft 31 through a connecting rod, the driving shaft 31 drives the ventilation pipe 2 to synchronously rotate with the driving shaft 31, the ventilation pipe 2 further drives each drainage piece 24 meshed with the ventilation pipe 2 to rotate, and when each drainage piece 24 rotates, air flow exhausted by the ventilation pipe 2 is guided to downwards flow through a drainage blade to form a structure for blowing up the film bubble 6 from top to bottom, so that the air flows from top to bottom, the process of gradual pressure stabilization is carried out, and the blowing effect of the film blowing mechanism on the film bubble 6 is improved.
As shown in fig. 2-4, the air inlet pipe 21 is connected with an air inlet of the air pipe 2 at the lower end of the air pipe 2, the lower end of the air pipe 21 is connected with a blower 211, the exhaust pipe 22 is covered outside the air pipe 21, a gap is reserved between the exhaust pipe 22 and the air pipe 2, the lower end of the exhaust pipe 22 is connected with an exhaust equipment 221, the air pipe 2 and the outer side of the exhaust pipe 22 are covered with a guide piece 23, a through hole is longitudinally formed in the axial center of the guide piece 23, the diameters of the guide piece 23 are gradually reduced from the middle to the upper end of the guide piece 23, the upper end of the guide piece 23 is attached to the outer wall of the lower end of the air pipe 2, a gap is reserved between the lower end of the guide piece 23 and the exhaust pipe 22, a plurality of ventilation grooves 231 are longitudinally arranged at intervals, and under the action of the exhaust equipment 221, air flows into the gap between the guide piece 23 and the exhaust pipe 22 through the ventilation grooves 231 and is further extracted by the exhaust pipe 22;
because the negative pressure is formed at the lower end of the guide piece 23, in order to further avoid the air flow to be attached to the guide piece 23 in the process of entering the exhaust pipe 22, the upper end of the guide piece 23 is further provided with a guide groove 232, so that one side facing the exhaust pipe 22 is the inner side, the guide groove 232 is inclined from top to bottom, the lower end of the guide groove 232 extends to the middle part of the guide piece 23, when the air flow outside the ventilation pipe 2 flows downwards, part of the air flow passes through the guide groove 232, and the air flow blows the film bubble 6 from inside to outside under the guide effect of the guide groove 232, so that the film bubble 6 is prevented from affecting the demolding of the film bubble 6 due to the attachment of the lower end of the guide piece 23.
The die head component 13 is provided with a through hole, the exhaust tube 22 passes through the through hole on the die head component 13, and the bubble 6 is blown out from the clearance between the die outlet and the exhaust tube 22.
Embodiment two: the temperature is higher in the die head subassembly 13, and the film bubble 6 overall length that blowing mechanism blown out is longer, and film bubble 6 lower extreme temperature is higher, and is the malleation in the film bubble 6, and film bubble 6 can appear under the effect of high temperature and malleation upper and lower extreme inflation inhomogeneous condition in the lower extreme, and then leads to the fold to appear in the film in the follow-up rolling process and influence the quality of film.
In order to solve the problem, the film blowing mechanism provided in this embodiment further includes a protection component, as shown in fig. 2, the protection component is disposed at the outer side of the ventilation pipe 2, the protection component includes a protection cylinder 4, the protection cylinder 4 is cylindrical, the bottom end of the protection cylinder 4 is reduced from top to bottom to form a circular truncated cone cylindrical structure, the upper end and the lower end of the protection cylinder 4 are provided with annular assembly plates, the opening of the upper end assembly plate and the outer periphery side of the mounting plate 241 form a gap for passing through the film bubble 6, the lower end assembly plate corresponds to the die outlet of the die head component 13, the opening of the lower end assembly plate and the lower end of the guide piece 23 form a gap for passing through the film bubble 6, the assembly plate is correspondingly provided with a fan 41, the rotating speed of the fan 41 located above is greater than that of the fan 41 located below, the fan 41 located above is used for introducing air flow between the protection cylinder 4 and the film bubble 6, the fan 41 below is used for exhausting air flow between the protection cylinder 4 and the film bubble 6, the air flow is promoted to enter the protection cylinder 4, the inner and outer air pressure of the film bubble 6 is in a relatively balanced state, the inner and outer air pressure of the film bubble 6 is enabled to be in a relatively balanced state, the inner and outer air pressure of the film bubble 6 is enabled, the film bubble 6 is prevented from being influenced by the air pressure of the same, the film bubble 6 is prevented from being expanded, and the film 6 is not to be further influenced by the expansion of the film 6, and the film 6 is further expanded, and the film 6 is not influenced by the air bubble 6.
For the installation and the maintenance of the protection cylinder 4 of being convenient for, the protection cylinder 4 can be assembled movably relative to the inflation film manufacturing machine, and specifically, the protection cylinder 4 comprises two half-tube-shaped connecting pieces, wherein the upper end part of each connecting piece is connected with an L-shaped connecting frame, a horizontal guide frame is arranged on a frame 1 of the inflation film manufacturing machine, the connecting frames are assembled in a sliding manner relative to the guide frame, the connecting frames can be driven to move along the guide frame through an air cylinder or a hydraulic cylinder, the opposite ends of the two connecting pieces form a turning edge, and the turning edges on the two connecting pieces are fixed through bolts during the relative assembly.
Embodiment III: after the film bubble 6 is blown, the film needs to be extruded through the herringbone plate 14, a traction clamping roller is fixed above the herringbone plate 14, the annular film bubble 6 is gradually flattened upwards through the herringbone plate 14, then a double-layer sheet film is formed after the traction clamping roller is compacted, the herringbone plate 14 can promote the discharge of air in the film bubble 6 when the film bubble 6 is extruded, in actual operation, the herringbone plate 14 and the die outlet center are offset, the opening angle of the herringbone plate 14 is unsuitable, the clamping force of the traction clamping roller is uneven and other reasons can influence the extrusion operation of the herringbone plate 14 on the film bubble 6, the air discharge effect in the film bubble 6 is poor, and further the film formed by extrusion of the film bubble 6 is wrinkled, so that the processing quality of a product is influenced.
In order to further promote extrusion and exhaust of the chevron plate 14 to the membrane bubble 6, residual air in the process of extruding the membrane bubble 6 is reduced, an exhaust component is further arranged below the chevron plate 14, as shown in fig. 5, the chevron plate 14 is arranged above the protective cylinder 4, the exhaust component comprises an exhaust piece 5 and an exhaust blade 311, the exhaust piece 5 corresponds to the shape of the chevron plate 14 below the chevron plate 14, a triangular prism-shaped cavity is formed inside the exhaust piece 5, an exhaust port 51 is arranged at the upper end of the exhaust piece 5, the membrane bubble 6 passes through between the chevron plate 14 and the exhaust piece 5, the exhaust piece 5 is arranged inside the membrane bubble 6, the exhaust port 51 is used for sucking air flow downwards under the extrusion position of the chevron plate 14 in cooperation with the extrusion operation of the chevron plate 14, the width of the exhaust port 51 is slightly smaller than the diameter of the membrane bubble 6, the lower end of the exhaust piece 5 is provided with an air outlet 52, the exhaust blade 311 is arranged in the air outlet 52, a driving shaft 31 longitudinally extends upwards to the air outlet 52, the exhaust blade 311 is fixed on the periphery of the driving shaft 31, the exhaust blade 311 is driven to rotate when the driving shaft 31 rotates, and air in the exhaust piece 5 is extracted, air in the inner part 5 is in a negative pressure state, the membrane bubble 6 is formed, the membrane bubble 6 is extruded, the residual air in the process is reduced, and the membrane bubble 6 is processed, and the residual air in the process is improved, and the membrane bubble 6 is extruded, and the effect is improved.
In order to improve the guiding effect of the lambdoidal plate 14 on the membrane bubble 6, the lambdoidal plate 14 comprises two lambdoidal brackets which are longitudinally and oppositely arranged, the two brackets are connected through a plurality of guide cylinders, the cylinder body part of each guide cylinder is used for being attached to the outer surface of the membrane bubble 6, and the guide cylinders are assembled with the brackets in a relative rotation mode.
The film blowing mechanism provided by the invention effectively improves the uniformity of air inlet in film blowing operation, improves the film blowing effect on film bubbles, avoids the condition that the upper end and the lower end of the film bubbles are unevenly expanded due to uneven temperature by arranging the protective component, increases the exhaust effect in the film bubble extrusion process by arranging the exhaust component at the lambdoidal plate, and ensures the processing quality of products.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (10)
1. Film blowing mechanism of inflation film manufacturing machine, inflation film manufacturing mechanism is used for setting up in inflation film manufacturing machine's frame, its characterized in that includes:
the bottom of the ventilation pipe is provided with an air inlet, the lower side of the ventilation pipe is provided with an exhaust pipe, the ventilation pipe is connected with the exhaust pipe through a flow guide piece, a plurality of flow guide pieces are uniformly arranged on the peripheral side of the top end of the ventilation pipe, and each flow guide piece comprises a shell and flow guide blades arranged in the shell;
the driving assembly comprises a driving source and a driving shaft, the driving end of the driving source is connected with the driving shaft, the driving shaft is sleeved in the ventilation pipe, the driving shaft is coaxially arranged with the ventilation pipe, the driving shaft is relatively fixed with the ventilation pipe, the upper end of the ventilation pipe and the shell of each drainage piece are correspondingly in a tooth-shaped structure, and each drainage piece is meshed with the air inlet pipe;
the air guide device comprises an air guide piece, wherein the air guide piece is provided with a through hole in the axial direction, the air guide piece is sleeved outside the ventilation pipe and the exhaust pipe through the through hole in the air guide piece, the upper end of the air guide piece is attached to the outer wall of the ventilation pipe, a gap is reserved between the exhaust pipe and the through hole of the air guide piece, and an air ventilation groove is formed in the air guide piece.
2. The film blowing mechanism of claim 1, wherein the diameter of the guide member is reduced from the middle portion thereof to both ends thereof in the longitudinal direction, the plurality of ventilation grooves are provided, each of the ventilation grooves is disposed at a longitudinal interval at the lower end of the guide member, and each of the ventilation grooves is disposed in the radial direction of the guide member.
3. The film blowing mechanism of claim 2, wherein the upper end of the guide member is provided with a guide groove, so that a side facing the exhaust pipe is an inner side, and the guide groove is obliquely arranged from top to bottom from inside to outside.
4. A film blowing mechanism of a film blowing machine according to claim 3, wherein a protective component is further arranged on the peripheral side of the ventilation pipe, the protective component comprises a protective cylinder, the protective cylinder is used for covering the outer side of the film bubble, a plurality of fans are correspondingly arranged at the upper end part and the lower end part of the protective cylinder, and the rotating speed of the lower fan is smaller than that of the upper fan so as to balance the pressure intensity of the inner side and the outer side of the film bubble.
5. The film blowing mechanism of claim 4, wherein the bottom diameter of the protective cylinder is reduced from top to bottom to form a circular cylinder shape, and the opening at the bottom of the protective cylinder is used for corresponding to the die outlet of the die head assembly.
6. The film blowing mechanism of claim 5, wherein the protective cylinder is composed of two semi-cylindrical connectors, and the two connectors are movably connected.
7. The film blowing mechanism of claim 4, wherein a chevron is disposed above the protective cylinder, an exhaust assembly is disposed below the chevron, the exhaust assembly comprises an exhaust member and an exhaust blade, the exhaust member corresponds to the chevron in shape below the chevron, an exhaust port is disposed at an upper end of the exhaust member, the exhaust blade is disposed below the exhaust member, the drive shaft extends longitudinally upward to a lower end of the exhaust member, and the exhaust blade is fixed at an upper end of the drive shaft.
8. The film blowing mechanism of claim 7, wherein the chevron comprises two chevron-shaped supports arranged longitudinally opposite each other, the two supports being connected by a plurality of guide cylinders, a barrel portion of each guide cylinder being adapted to engage a film bubble, the guide cylinders being rotatably assembled with the supports.
9. The film blowing mechanism of claim 1, wherein an annular mounting plate is fixed on the peripheral side of the upper end of the ventilation pipe, a plurality of mounting holes are uniformly formed in the mounting plate, and each drainage piece is correspondingly mounted in each mounting hole.
10. The film blowing mechanism of claim 1, wherein the lower end of the ventilation pipe is connected with an air inlet pipe, the air inlet pipe is sleeved outside the exhaust pipe, the upper end of the air inlet pipe is communicated with the ventilation pipe, and the lower end of the air inlet pipe is connected with a blower device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310854856.4A CN116572518B (en) | 2023-07-13 | 2023-07-13 | Film blowing mechanism of film blowing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310854856.4A CN116572518B (en) | 2023-07-13 | 2023-07-13 | Film blowing mechanism of film blowing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116572518A true CN116572518A (en) | 2023-08-11 |
| CN116572518B CN116572518B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310854856.4A Active CN116572518B (en) | 2023-07-13 | 2023-07-13 | Film blowing mechanism of film blowing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116572518B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109070427A (en) * | 2016-01-15 | 2018-12-21 | 艾迪克斯公司 | High-performance cooling system |
| CN109605720A (en) * | 2018-04-21 | 2019-04-12 | 广东金明精机股份有限公司 | Plastic film blowing machine inner-cooling structure |
| CN209409292U (en) * | 2018-12-27 | 2019-09-20 | 广东汇发塑业科技有限公司 | A kind of inflation film gas extrusion device |
| CN113085156A (en) * | 2021-02-23 | 2021-07-09 | 唐集体 | Plastic film blowing machine |
| CN115256901A (en) * | 2022-09-01 | 2022-11-01 | 升信新材（北京）科技有限公司 | Melt blow molding process and device for polyetherimide film |
-
2023
- 2023-07-13 CN CN202310854856.4A patent/CN116572518B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109070427A (en) * | 2016-01-15 | 2018-12-21 | 艾迪克斯公司 | High-performance cooling system |
| CN109605720A (en) * | 2018-04-21 | 2019-04-12 | 广东金明精机股份有限公司 | Plastic film blowing machine inner-cooling structure |
| CN209409292U (en) * | 2018-12-27 | 2019-09-20 | 广东汇发塑业科技有限公司 | A kind of inflation film gas extrusion device |
| CN113085156A (en) * | 2021-02-23 | 2021-07-09 | 唐集体 | Plastic film blowing machine |
| CN115256901A (en) * | 2022-09-01 | 2022-11-01 | 升信新材（北京）科技有限公司 | Melt blow molding process and device for polyetherimide film |
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| CN116572518B (en) | 2023-09-19 |
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