CN115648602B

CN115648602B - High-efficient blow molding equipment of polyethylene plastic bag

Info

Publication number: CN115648602B
Application number: CN202211352719.2A
Authority: CN
Inventors: 郝玉玲
Original assignee: Yantai Guangenda Packaging Materials Co ltd
Current assignee: Yantai Guangenda Packaging Materials Co ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-05-23
Anticipated expiration: 2042-11-01
Also published as: CN115648602A

Abstract

The invention discloses efficient blow molding equipment for polyethylene plastic bags, and relates to the technical field of blow molding. The high-efficiency blow molding equipment for the polyethylene plastic bag comprises a blow molding opening arranged at the top of a plastic film blowing machine, wherein a limiting ring is fixedly sleeved on the side wall of the blow molding opening. When blowing, bleed through the gas vent for the tubular film is even with the inside wall laminating of spacing ring and fixed cover, guarantees the diameter of tubular film, and then guarantees the thickness of tubular film even, and then guarantees the thickness of plastic bag even, meanwhile, when the gas vent bleeds, can improve the cooling efficiency of tubular film, and then guarantees plastic bag production efficiency and production quality, simultaneously, can filter the impurity in the air, guarantees the high-efficient blow molding's of polyethylene plastic bag quality, reduces the disqualification rate, and then improves its production efficiency, and, is convenient for clear up and collect the impurity of electrostatic precipitator board lateral wall, guarantees its filter effect and filtration efficiency.

Description

High-efficient blow molding equipment of polyethylene plastic bag

Technical Field

The invention relates to the technical field of blow molding, in particular to efficient blow molding equipment for polyethylene plastic bags.

Background

The plastic bag is convenient, low in price, wide in application range and the like, and the plastic bag is produced by carrying out hot melting on polyethylene powder and then carrying out blow molding and pressing, so that a plastic bag forming device is needed. The traditional plastic bag is manufactured by obtaining molten plastic materials through an extruder, forming tubular films through a plastic film blowing machine, and finally extruding, folding and forming.

However, when a plastic film blowing machine is used for blowing and forming a tubular film, the air is directly matched with a blowing module to realize inflation on a molten plastic material, so that the molding of the tubular film is affected, and particularly for thin plastic bags, the diameter of the tubular film is easy to be different, the uniformity of the thickness of the tubular film is poor, the specification of the finally formed plastic bag cannot meet the requirements, meanwhile, the tubular film needs to be naturally cooled and shaped in the air after the plastic film is blown, the cooling efficiency is low, and impurities such as dust in the air are easy to adhere to the surface of the tubular film, so that the blowing quality and efficiency of the polyethylene plastic bag are affected.

Disclosure of Invention

The invention aims to provide efficient blow molding equipment for polyethylene plastic bags, which solves the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a high-efficient blow molding equipment of polyethylene plastic bag, includes the blowing mouth that sets up at plastics inflation film manufacturing machine top, the fixed cover of lateral wall of blowing mouth is equipped with the spacing ring, the mounting groove that a plurality of arrays set up has been seted up to the lateral wall of spacing ring, and each mounting groove internal fixation inserts the fixed cover that is equipped with the cavity setting, fixed cover establishes at the lateral wall of tubular film, adjacent two fixedly connected with arcwall tube between the fixed cover, and each fixed cover includes the arcwall face, the bar opening that a plurality of arrays set up has been seted up on the arcwall face, and the extraction hole that a plurality of arrays set up has been seted up to each bar open-ended lateral wall, extraction hole and the inside intercommunication of fixed cover, the top of plastics inflation film manufacturing machine is provided with the air extraction mechanism that is used for driving the extraction hole to bleed, and the last lateral wall of fixed cover is provided with and is used for carrying out filterable filtering mechanism to the air.

Preferably, the air extraction mechanism comprises a supporting plate fixedly connected to the top of the plastic film blowing machine, the upper end of the supporting plate is fixedly connected with a working box, the side wall of the working box is fixedly connected with an air extraction pipe, the other end of the air extraction pipe is fixed with the side wall of one of the fixing covers, the working box is far away from the side wall fixedly connected with an exhaust pipe of the air extraction pipe, a rotating fan is connected in the working box through a rotating shaft in a rotating mode, the side wall of the working box is fixedly connected with a motor, and the output end of the motor is fixed with one end of the rotating shaft.

Preferably, the filtering mechanism comprises an electrostatic dust collection plate fixedly connected to the upper side wall of the fixed cover and arranged in an annular mode, the electrostatic dust collection plate is sleeved on the side wall of the tubular film, a plurality of filter holes arranged in an array mode are formed in the side wall of the electrostatic dust collection plate, a cleaning mechanism used for scraping and cleaning impurities adsorbed on the surface of the electrostatic dust collection plate is arranged on the side wall of the electrostatic dust collection plate, and a collecting mechanism used for collecting the cleaned impurities is arranged on the side wall of the electrostatic dust collection plate.

Preferably, the cleaning mechanism comprises a scraper which is sleeved on the side wall of the electrostatic dust collection plate and is in an annular shape, the side wall of the scraper is fixedly connected with an L-shaped connecting plate, and the movement of the scraper is pushed by the pushing mechanism.

Preferably, the pushing mechanism comprises a first pushing plate and a second pushing plate which are fixedly connected to the side wall of the connecting plate, one end of the rotating shaft penetrates through the side wall of the working box and is fixedly sleeved with a cam, and the cam slides on the side wall of the first pushing plate and the side wall of the second pushing plate.

Preferably, the collecting mechanism comprises two symmetrical annular covers fixedly sleeved on the side wall of the electrostatic dust collection plate, and a plurality of arc plates arranged in an array are connected to the opposite side walls of the two annular covers through a plurality of groups of rotating assemblies in a rotating mode.

Preferably, each group of rotating assemblies comprises two symmetrically arranged fixed plates fixedly connected to the inner side wall of the annular cover, the opposite side walls of the two fixed plates are rotationally connected with rotating blocks through rotating rods, the rotating blocks are fixed with the side walls of the arc plates, and reset assemblies for resetting the rotating rods are arranged on the side walls of the fixed plates.

Preferably, the reset component comprises a gear fixedly sleeved on the side wall of the rotating rod, the side wall of the fixed plate is connected with a rack through the guide component, and the rack is meshed with the gear.

Preferably, the guide assembly comprises two symmetrically arranged connecting blocks fixedly connected to the side wall of the fixing plate, two symmetrically arranged guide rods are fixedly connected to the opposite side walls of the two connecting blocks, a moving block is sleeved on the side wall of each guide rod, the moving block is fixed to the side wall of the rack, and springs are sleeved on the side wall of each guide rod.

Preferably, the inner side wall of the limiting ring and the surface of the arc-shaped surface are provided with smooth films.

Compared with the prior art, the invention has the beneficial effects that:

(1) This kind of high-efficient blow molding equipment of polyethylene plastic bag, through setting up air extraction mechanism etc, when carrying out the blowing, the tubular film of formation after the blowing passes spacing ring and fixed cover and upwards carries, and simultaneously, the starter motor, the rotation of motor drives the rotation of pivot and commentaries on classics fan, and then carry out the operation of bleeding, make the air get into fixed cover through bar opening and exhaust vent after passing through filtering mechanism, and get into the work box after passing through arcuation pipe and exhaust tube, and discharge through the blast pipe, when carrying out the evacuation through the exhaust vent, can make tubular film laminating with spacing ring and the inside wall of fixed cover, thereby can guarantee the diameter of tubular film even, the diameter of tubular film is the same with the internal diameter of spacing ring, thereby the thickness of tubular film is even when guaranteeing the blow molding, guarantee the thickness of polyethylene plastic bag even promptly, and then guarantee its production efficiency and production quality, and simultaneously, when the exhaust vent carries out the cooling efficiency of tubular film, not only can improve the efficiency of production, can also guarantee the quality of production.

(2) This kind of high-efficient blow molding equipment of polyethylene plastic bag, through setting up filtering mechanism etc., when bleeding, the air gets into and is by the extraction hole suction through the filtration pore of electrostatic precipitator board, at this moment, impurity in the air is adsorbed on the lateral wall of electrostatic precipitator board, thereby impurity in the air can be filtered, guarantee the high-efficient blow molding's of polyethylene plastic bag quality, reduce the disqualification rate, and then improve its production efficiency, and at the same time, when the pivot rotates, drive the cam and rotate in step, and, the cam slides at the lateral wall of first impeller and second impeller, thereby promote the scraper blade along the lateral wall of electrostatic precipitator board reciprocating motion from top to bottom through the connecting plate, can strike off the clearance to the impurity of electrostatic precipitator board lateral wall, guarantee its filter effect and filtration efficiency, and then guarantee the air extraction effect.

(3) This kind of high-efficient blow molding equipment of polyethylene plastic bag through setting up and collecting mechanism etc. when scraper blade along the lateral wall of electrostatic precipitator board reciprocating motion from top to bottom, when scraper blade and arc offset, can promote the arc and rotate along the dwang and open for impurity after the clearance is collected in pushing the annular cover, simultaneously, when the dwang rotates, drive gear synchronous rotation, make the rack remove along the guide bar, and the spring is compressed, treat the scraper blade and after annular cover breaks away from, arc and dwang can rotate the reset under the effect of spring, guarantee that the arc seals the annular cover and close, thereby be convenient for collect impurity after the clearance, convenient to use more convenient and fast.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of another view of the present invention;

FIG. 3 is a schematic view of a partial cross-sectional structure of the present invention;

FIG. 4 is a schematic view of a partially cut-away structure from another perspective of the present invention;

FIG. 5 is a schematic perspective view of a retaining cap according to the present invention;

FIG. 6 is an enlarged schematic view of the structure shown at A in FIG. 1;

FIG. 7 is an enlarged schematic view of the structure shown at B in FIG. 2;

FIG. 8 is an enlarged schematic view of FIG. 4C;

fig. 9 is an enlarged schematic view of the structure at D in fig. 8.

In the figure: 1. a plastic film blowing machine; 101. a blow molding port; 2. an air extraction mechanism; 201. a support plate; 202. a working box; 203. an exhaust pipe; 204. an exhaust pipe; 205. rotating the fan; 206. a motor; 207. a rotating shaft; 3. a filtering mechanism; 301. an electrostatic dust collection plate; 302. a filter hole; 4. a cleaning mechanism; 401. a scraper; 402. a connecting plate; 5. a pushing mechanism; 501. a first push plate; 502. a second pushing plate; 503. a cam; 6. a collection mechanism; 601. an annular cover; 602. an arc-shaped plate; 7. a rotating assembly; 701. a fixing plate; 702. a rotating lever; 703. a rotating block; 8. a reset assembly; 801. a gear; 802. a rack; 9. a guide assembly; 901. a connecting block; 902. a guide rod; 903. a moving block; 904. a spring; 10. an arc tube; 11. a tubular film; 12. a mounting groove; 13. a fixed cover; 1301. an arc surface; 14. a strip-shaped opening; 15. an air suction hole; 16. and a limiting ring.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-9, the present invention provides a technical solution: the utility model provides a high-efficient blow molding equipment of polyethylene plastic bag, including setting up the blowing mouth 101 at plastic inflation film manufacturing machine 1 top, the fixed cover of lateral wall of blowing mouth 101 is equipped with spacing ring 16, the mounting groove 12 that a plurality of arrays set up has been seted up to the lateral wall of spacing ring 16, and each mounting groove 12 internal fixation is inserted and is equipped with the fixed cover 13 of cavity setting, the lateral wall at tubular film 11 is established to fixed cover 13 cover, fixedly connected with arc tube 10 between two adjacent fixed covers 13, and each fixed cover 13 includes arcwall 1301, set up the bar opening 14 that a plurality of arrays set up on the arcwall 1301, and the lateral wall of each bar opening 14 has been seted up the bleed hole 15 that a plurality of arrays set up, bleed hole 15 and the inside intercommunication of fixed cover 13, the top of plastic inflation film manufacturing machine 1 is provided with the bleed mechanism 2 that is used for driving bleed hole 15 to bleed, and the upper side wall of fixed cover 13 is provided with and is used for carrying out filterable filter mechanism 3 to the air, when carrying out the gas pocket, through bleed hole 15 bleed, make tubular film 11 and the lateral wall laminating of spacing ring 16 and fixed cover 13, guarantee the diameter uniformity of tubular film 11, thereby guarantee that the thickness is even, when the thickness of tubular film 11 is guaranteed, the air pocket is even, the efficiency is carried out the filtration efficiency is carried out in the production and the filtration efficiency is guaranteed, and the filtration quality is further can be reduced, and the filtration efficiency is further can be guaranteed to the production and the filtration efficiency is improved, and the filtration efficiency is further is high-quality and is guaranteed.

Referring to fig. 6 and 7, the air extraction mechanism 2 includes a supporting plate 201 fixedly connected to the top of the plastic film blowing machine 1, the upper end of the supporting plate 201 is fixedly connected to a working box 202, a side wall of the working box 202 is fixedly connected to an air extraction pipe 204, the other end of the air extraction pipe 204 is fixed to the side wall of one of the fixed covers 13, the side wall of the working box 202 far away from the air extraction pipe 204 is fixedly connected to an exhaust pipe 203, a rotating fan 205 is rotatably connected in the working box 202 through a rotating shaft 207, the side wall of the working box 202 is fixedly connected to a motor 206, an output end of the motor 206 is fixed to one end of the rotating shaft 207, the motor 206 is started, and the rotation of the motor 206 drives the rotating shaft 207 and the rotating fan 205 to rotate, so that air is extracted through the air extraction pipe 204 and is discharged through the exhaust pipe 203.

Referring to fig. 2 and 8, the filtering mechanism 3 includes an electrostatic dust collection plate 301 fixedly connected to the upper side wall of the fixed cover 13 and arranged in a ring shape, the electrostatic dust collection plate 301 is sleeved on the side wall of the tubular film 11, a plurality of filter holes 302 arranged in an array are formed in the side wall of the electrostatic dust collection plate 301, a cleaning mechanism 4 for scraping and cleaning impurities adsorbed on the surface of the electrostatic dust collection plate 301 is arranged on the side wall of the electrostatic dust collection plate 301, a collecting mechanism 6 for collecting the cleaned impurities is arranged on the side wall of the electrostatic dust collection plate 301, referring to fig. 8, the inner diameter of the electrostatic dust collection plate 301 is larger than the inner diameters of the limiting ring 16 and the arc-shaped surface 1301, a gap is reserved between the tubular film 11 after cooling and shaping and the electrostatic dust collection plate 301, air can enter the fixed cover 13 after passing through the strip-shaped openings 14 and the air suction holes 15 normally, and during air suction, at this time, the impurities in the air are adsorbed on the outer side wall of the electrostatic dust collection plate 301 through the filter holes 302, so that the impurities in the air can be filtered, the impurities in the air can be efficiently reduced, the quality of the polyethylene plastic bag can be guaranteed, the reject the plastic bag can be produced, and the production efficiency can be further improved.

Referring to fig. 6-8, the cleaning mechanism 4 includes a scraper 401 sleeved on the side wall of the electrostatic dust collection plate 301 and in an annular shape, and the side wall of the scraper 401 is fixedly connected with a connecting plate 402 in an L shape, the scraper 401 is moved by a pushing mechanism 5, and the connecting plate 402 and the scraper 401 are pushed by the pushing mechanism 5 to reciprocate up and down, so that the scraper 401 reciprocates up and down along the side wall of the electrostatic dust collection plate 301, and impurities on the side wall of the electrostatic dust collection plate 301 can be scraped and cleaned, thereby ensuring the filtering effect and the filtering efficiency of the impurities and further ensuring the air extraction effect.

Referring to fig. 7, the pushing mechanism 5 includes a first pushing plate 501 and a second pushing plate 502 fixedly connected to the side walls of the connecting plate 402, and one end of the rotating shaft 207 penetrates through the side walls of the working box 202 and is fixedly sleeved with a cam 503, the cam 503 slides on the side walls of the first pushing plate 501 and the second pushing plate 502, when the rotating shaft 207 rotates, the cam 503 is driven to rotate synchronously, and the cam 503 slides on the side walls of the first pushing plate 501 and the second pushing plate 502, so that the scraper 401 is pushed by the connecting plate 402 to reciprocate up and down along the side walls of the electrostatic dust collection plate 301.

Referring to fig. 2, 7 and 8, the collecting mechanism 6 includes two symmetrical annular covers 601 fixedly sleeved on the side walls of the electrostatic precipitator plate 301, and the opposite side walls of the two annular covers 601 are rotationally connected with a plurality of arc plates 602 arranged in an array through a plurality of groups of rotating assemblies 7, when the scraper 401 reciprocates up and down along the side walls of the electrostatic precipitator plate 301, the arc plates 602 can be rotated and opened under the action of the rotating assemblies 7 when the scraper 401 abuts against the arc plates 602, so that cleaned impurities are pushed into the annular covers 601 to be collected, and after the scraper 401 is separated from the annular covers 601, the arc plates 602 and the rotating rods 702 can be rotated and reset under the action of the springs 904, so that the arc plates 602 can be sealed and closed on the annular covers 601.

Referring to fig. 9, each set of rotating assemblies 7 includes two symmetrically disposed fixed plates 701 fixedly connected to the inner side wall of the annular cover 601, and opposite side walls of the two fixed plates 701 are rotatably connected with a rotating block 703 through a rotating rod 702, the rotating block 703 is fixed to the side wall of the arc 602, and a reset assembly 8 for resetting the rotating rod 702 is disposed on the side wall of the fixed plate 701, so that the arc 602 can be opened or closed in a normal rotation manner.

Referring to fig. 9, the reset assembly 8 includes a gear 801 fixedly sleeved on a side wall of the rotating rod 702, a rack 802 is connected to the side wall of the fixed plate 701 through the guiding assembly 9, the rack 802 is meshed with the gear 801, and when the rotating rod 702 rotates, the gear 801 is driven to rotate, so that the rack 802 moves on the guiding assembly 9.

Referring to fig. 9, the guide assembly 9 includes two symmetrically disposed connecting blocks 901 fixedly connected to the side wall of the fixing plate 701, two symmetrically disposed guide rods 902 fixedly connected to the opposite side walls of the two connecting blocks 901, moving blocks 903 sleeved on the side walls of the guide rods 902, and springs 904 sleeved on the side walls of the guide rods 902 to guide and reset the movement of the racks 802.

Referring to fig. 3, the inner sidewall of the limiting ring 16 and the surface of the arc-shaped surface 1301 are both provided with smooth films to avoid damage to the tubular film 11.

Working principle: when in use, during blow molding, the tubular film 11 formed after blow molding passes through the limiting ring 16 and the fixed cover 13 and is conveyed upwards, meanwhile, the motor 206 is started, the rotation of the motor 206 drives the rotation shaft 207 and the rotating fan 205 to rotate, and then air is pumped, so that air passes through the filtering mechanism 3, enters the fixed cover 13 through the strip-shaped opening 14 and the pumping hole 15, enters the working box 202 through the arc tube 10 and the pumping tube 204 and is discharged through the exhaust tube 203, when the air is pumped through the pumping hole 15, the tubular film 11 can be attached to the limiting ring 16 and the inner side wall of the fixed cover 13, so that the diameter of the tubular film 11 is ensured to be uniform, namely the diameter of the tubular film 11 is the same as the inner diameter of the limiting ring 16, the thickness of the tubular film 11 is ensured to be uniform during blow molding, namely the thickness of the polyethylene plastic bag is ensured to be uniform, and the production efficiency and the production quality of the tubular film 11 are ensured;

meanwhile, when air is pumped, air enters through the filtering holes 302 of the electrostatic dust collection plate 301 and is pumped by the pumping holes 15, at the moment, impurities in the air are adsorbed on the outer side wall of the electrostatic dust collection plate 301, so that the impurities in the air can be filtered, the high-efficiency blow molding quality of the polyethylene plastic bag is ensured, the reject ratio is reduced, the production efficiency is further improved, meanwhile, when the rotating shaft 207 rotates, the cam 503 is driven to synchronously rotate, and the cam 503 slides on the side walls of the first pushing plate 501 and the second pushing plate 502, so that the scraper 401 is pushed by the connecting plate 402 to reciprocate up and down along the side walls of the electrostatic dust collection plate 301, the impurities on the side walls of the electrostatic dust collection plate 301 can be scraped and cleaned, the filtering effect and the filtering efficiency are ensured, and the air exhausting effect is further ensured;

and, when scraper blade 401 reciprocates from top to bottom along the lateral wall of electrostatic precipitator board 301, when scraper blade 401 offsets with arc 602, can promote arc 602 to rotate along dwang 702 and open for the impurity after the clearance is pushed into annular cover 601 and is collected, simultaneously, dwang 702 rotates, drive gear 801 and rotate in step, make rack 802 remove along guide bar 902, and spring 904 is compressed, after scraper blade 401 breaks away from annular cover 601, arc 602 and dwang 702 can rotate under the effect of spring 904 and reset, guarantee that arc 602 seals and close annular cover 601, thereby be convenient for collect the impurity after the clearance, convenient to use is more convenient and fast.

The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention. The technology, shape, and construction parts of the present invention, which are not described in detail, are known in the art.

Claims

1. The utility model provides a high-efficient blow molding equipment of polyethylene plastic bag, includes blowing mouth (101) that sets up at plastics inflation film manufacturing machine (1) top, its characterized in that: the plastic film blowing machine is characterized in that a limiting ring (16) is fixedly sleeved on the side wall of the blow molding opening (101), a plurality of mounting grooves (12) which are arranged in an array are formed in the side wall of the limiting ring (16), a hollow fixed cover (13) is fixedly inserted into each mounting groove (12), the fixed cover (13) is sleeved on the side wall of the tubular film (11), an arc-shaped pipe (10) is fixedly connected between every two fixed covers (13), the side wall, close to the tubular film (11), of each fixed cover (13) is an arc-shaped surface (1301), a plurality of strip-shaped openings (14) which are arranged in an array are formed in the arc-shaped surface (1301), a plurality of air suction holes (15) which are arranged in an array are formed in the side wall of each strip-shaped opening (14), the air suction holes (15) are communicated with the inside of the fixed cover (13), an air suction mechanism (2) which is used for driving the air suction holes (15) is arranged at the top of the plastic film blowing machine (1), and a filtering mechanism (3) which is used for filtering air is arranged on the upper side wall of the fixed cover (13);

the utility model provides a dust removing device, including plastic inflation film manufacturing machine (1), suction mechanism (2) including fixed connection backup pad (201) at plastics inflation film manufacturing machine (1) top, and the upper end fixedly connected with work box (202) of backup pad (201), the lateral wall fixedly connected with exhaust tube (204) of work box (202), and the other end of exhaust tube (204) is fixed with the lateral wall of one of them fixed cover (13), lateral wall fixedly connected with blast pipe (203) of exhaust tube (204) are kept away from to work box (202), and rotate through pivot (207) in work box (202) and be connected with fan (205), the lateral wall fixedly connected with motor (206) of work box (202), and the output of motor (206) is fixed with one end of pivot (207), filter mechanism (3) are including fixed connection electrostatic precipitator board (301) that the lateral wall is annular setting on fixed cover (13), electrostatic precipitator board (301) cover is established at the lateral wall of tubular film (11), and the lateral wall of electrostatic precipitator board (301) has seted up filtration pore (302) that a plurality of arrays set up, the lateral wall of electrostatic precipitator board (301) is provided with and is used for carrying out the collection mechanism (6) of impurity removal of impurity of removing mechanism (6) after scraping the surface to adsorb and carrying out the impurity to clean up (6), the cleaning mechanism (4) comprises a scraper blade (401) sleeved on the side wall of the electrostatic dust collection plate (301) and is annularly arranged, the side wall of the scraper blade (401) is fixedly connected with an L-shaped connecting plate (402), the scraper blade (401) moves and is pushed by a pushing mechanism (5), the pushing mechanism (5) comprises a first pushing plate (501) and a second pushing plate (502) fixedly connected with the side wall of the connecting plate (402), one end of a rotating shaft (207) penetrates through the side wall of the working box (202) and is fixedly sleeved with a cam (503), the cam (503) slides on the side walls of the first pushing plate (501) and the second pushing plate (502), the collecting mechanism (6) comprises an annular cover (601) fixedly sleeved on the side wall of the electrostatic dust collection plate (301), a plurality of arc plates (602) which are symmetrically arranged, the opposite side walls of the two annular covers (601) are rotatably connected with a plurality of arrays through a plurality of groups of rotating assemblies (7), each group of rotating assemblies (7) comprises a fixed plate (701) fixedly connected with the inner side wall of the annular cover (601), the two arc plates (703) are symmetrically arranged, the two side walls of the fixed plates (703) are rotatably connected with the rotating blocks (703) through the fixed blocks (703) through the side walls of the fixed blocks (703), and the lateral wall of fixed plate (701) is provided with reset subassembly (8) that are used for resetting dwang (702), reset subassembly (8) are established gear (801) at dwang (702) lateral wall including fixed cover, the lateral wall of fixed plate (701) is connected with rack (802) through guide subassembly (9), and rack (802) and gear (801) meshing set up, guide subassembly (9) are including connecting block (901) that two symmetries of fixed plate (701) lateral wall set up, and two lateral wall fixedly connected with guide bar (902) that the symmetry set up of connecting block (901) are relative, the lateral wall cover of guide bar (902) is equipped with movable block (903), and the lateral wall of movable block (903) and rack (802) is fixed, and each the lateral wall cover of guide bar (902) is equipped with spring (904).

2. The efficient blow molding apparatus for polyethylene plastic bags according to claim 1, wherein: the inner side wall of the limiting ring (16) and the surface of the arc-shaped surface (1301) are provided with smooth films.