Blow-up traction equipment for polyethylene antibacterial film production

Abstract

The utility model belongs to the technical field of polyethylene antibacterial film production, and discloses a blowing traction device for polyethylene antibacterial film production, which comprises a die head, an air ring arranged above the die head, a herringbone plate arranged above the air ring, a traction component arranged on one side of the herringbone plate, a plurality of annular air pipes arranged at equal intervals up and down, and a plurality of air pipes arranged at equal intervals up and down, a plurality of uniformly distributed adjustable air outlets are formed in the annular air pipe, the annular air pipe is connected with an air guide branch pipe, an air volume control valve is arranged on the air guide branch pipe, the air guide branch pipe is connected with an air guide main pipe, one end of the air guide main pipe is connected with a fan, an inlet of the fan is connected with a filter, the air ring is designed into multiple layers, and the air volume and the air direction of each layer can be independently controlled; by optimizing the distribution and action of each layer of wind, the cooling speed and shape of the film bubbles can be better controlled, and the transparency and mechanical property of the film are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to polyethylene antibacterial film production technical field, specifically a kind of for polyethylene antibacterial film production's blow-drawing equipment. BACKGROUND

[0002] In the production process of polyethylene antibacterial film, blow-drawing equipment is the core device that determines film quality and production efficiency, and as the key component of blow-drawing system, wind ring directly influences the cooling and shaping effect of film, and the air outlet angle and air volume of traditional wind ring structure are usually preset parameters, which are difficult to flexibly adjust according to the changes of factors such as raw material characteristics, film thickness and production speed in production process.

[0003] When producing polyethylene antibacterial film of different specifications, the requirements for the direction and intensity of cooling air are not the same due to the differences in raw material formula and bubble size, and if wind ring with fixed air outlet angle and air volume is used, it may lead to uneven cooling of film, resulting in quality problems such as thickness deviation, surface wrinkles and poor transparency, for example, when producing thicker polyethylene antibacterial film, if the air outlet angle of wind ring is unreasonable, the bottom of bubble may not be cooled enough, while the top is overcooled, causing uneven thickness of film in longitudinal direction, and if air volume is not adjusted in time, the crystallinity and mechanical properties of film may be affected due to improper cooling speed, in addition, during production process, as the running time of equipment increases, factors such as ambient temperature and equipment state change, and wind ring with fixed parameters is difficult to maintain stable production conditions, leading to fluctuations in product quality, increasing the scrap rate and production cost in production process

[0004] Therefore, a blow-drawing equipment for polyethylene antibacterial film production is proposed to solve the above problems. SUMMARY

[0005] To solve the problems proposed in the above background, the utility model provides a blow-drawing equipment for polyethylene antibacterial film production, which is designed as multiple layers, and the air volume and direction of each layer can be independently controlled, and by optimizing the distribution and effect of air of each layer, the cooling speed and shape of bubble can be better controlled, and the transparency and mechanical properties of film can be improved.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a blow-drawing equipment for polyethylene antibacterial film production, comprising a die head, a wind ring is arranged above the die head, a herringbone plate is arranged above the wind ring, and a traction assembly is arranged on one side of the herringbone plate.

[0007] The wind ring comprises a plurality of annular air pipes arranged equidistantly up and down, a plurality of adjustable air outlets are uniformly arranged on the annular air pipes, air guide branch pipes are connected to the annular air pipes, air volume control valves are arranged on the air guide branch pipes, air guide main pipes are connected to the air guide branch pipes, a fan is connected to one end of the air guide main pipes, and a filter is connected to the inlet of the fan.

[0008] The adjustable air outlet comprises an air outlet pipe, an air outlet head is arranged on the air outlet pipe, the two ends of the air outlet pipe are connected to the annular air pipe through rotary joints, a gear ring is arranged on the air outlet pipe, the gear ring is connected to a gear through meshing, and the gear is connected to a first motor through a motor shaft.

[0009] Preferably, the traction assembly comprises two driving rollers arranged correspondingly in front and back, a driven roller is arranged above the driving rollers, chain wheels are connected to one end of the driving rollers, the chain wheels are connected to each other through a chain, and one of the chain wheels is connected to a second motor through a motor shaft.

[0010] Preferably, a tensioning assembly is arranged between the traction assembly and the herringbone plate, the tensioning assembly comprises a tensioning roller, the tensioning roller is connected to a support frame, a support plate is arranged below the support frame, a gas cylinder is arranged on the support plate, a pressure sensor is connected to the end of the piston rod of the gas cylinder, and the pressure sensor is arranged at the center position of the bottom of the support frame.

[0011] Preferably, two symmetrical guide holes are formed in the support plate, guide rods are arranged in the guide holes, and the top ends of the guide rods are fixedly connected to mounting frames.

[0012] Preferably, the filter comprises a shell, two separation nets are arranged correspondingly in the shell, and adsorption fillers are arranged between the separation nets.

[0013] Preferably, an air inlet is arranged at the top of one side of the shell, an air outlet is arranged at the bottom of the other side of the shell, and the two separation nets are arranged between the air inlet and the air outlet.

[0014] Compared with the prior art, the wind ring of the present application has the following advantages:

[0015] 1. The wind ring is designed as multiple layers, each layer can independently control the air volume and the air direction, the distribution and effect of the air of each layer are optimized, the cooling speed and shape of the film bubble are better controlled, and the transparency and mechanical properties of the film are improved.

[0016] 2. The filter is arranged to filter and adsorb the air blown to the film, remove impurity particles in the air, avoid some impurities from polluting the film, avoid some particles from scratching the film, and improve the quality of the film. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the whole structure schematic view of the utility model;

[0018] Figure 2 It is the structure schematic view of the utility model air ring;

[0019] Figure 3 It is the structure schematic view of the utility model adjustable air outlet;

[0020] Figure 4 It is the structure schematic view of the utility model air guide structure;

[0021] Figure 5 It is the structure schematic view of the utility model filter;

[0022] Figure 6 It is the structure schematic view of the utility model traction assembly;

[0023] Figure 7 It is the structure schematic view of the utility model tensioning assembly.

[0024] In the drawing:

[0025] 1, die head;

[0026] 2, air ring;

[0027] 21, annular air pipe;

[0028] 22, adjustable air outlet; 221, air outlet pipe; 222, air outlet head; 223, rotary joint; 224, gear ring; 225, gear; 226, first motor;

[0029] 23, air guide branch pipe; 24, air volume control valve; 25, air guide main pipe; 26, fan;

[0030] 27, filter; 271, shell; 272, screen; 273, adsorption filler; 274, air inlet; 275, air outlet;

[0031] 3, herringbone board;

[0032] 4, traction assembly; 41, driving roller; 42, driven roller; 43, sprocket; 44, chain; 45, second motor;

[0033] 5, tensioning assembly; 51, tensioning roller; 52, support frame; 53, support plate; 54, air cylinder; 55, pressure sensor; 56, guide hole; 57, guide rod. DETAILED DESCRIPTION

[0034] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] As shown in Figures 1 to 7 The utility model provides a kind of blow-drawing equipment for polyethylene antibacterial film production, including die head 1, die head 1 connects the outlet of extruder, the top of die head 1 is provided with wind ring 2, the top of wind ring 2 is provided with herringbone plate 3, one side of herringbone plate 3 is provided with traction assembly 4;

[0036] Wind ring 2 includes a plurality of upper and lower equidistantly arranged annular air pipes 21, a plurality of uniformly distributed adjustable air outlets 22 are installed on annular air pipe 21, air guide branch pipe 23 is connected with annular air pipe 21, air volume control valve 24 is installed on air guide branch pipe 23, air guide main pipe 25 is connected with air guide branch pipe 23, one end of air guide main pipe 25 is connected with fan 26, the inlet of fan 26 is connected with filter 27, wind ring 2 is designed as multiple layers, the air volume and the direction of each layer can be independently controlled, by optimizing the distribution and effect of each layer of air, the cooling speed and shape of bubble can be better controlled, and the transparency and mechanical properties of the film are improved;

[0037] Adjustable air outlet 22 includes air outlet pipe 221, air outlet head 222 is installed on air outlet pipe 221, both ends of air outlet pipe 221 are connected with annular air pipe 21 through rotary joint 223, air outlet pipe 221 is provided with gear ring 224, gear ring 224 is engaged with gear 225, first motor 226 is connected with gear 225 through motor shaft.

[0038] Specifically, traction assembly 4 includes two driving rollers 41 arranged correspondingly in front and back, driven roller 42 is arranged above driving roller 41, one end of driving roller 41 is connected with sprocket 43, sprocket 43 is connected with chain 44 between them, and one of sprocket 43 is connected with second motor 45 through motor shaft.

[0039] Further, tensioning assembly 5 is arranged between traction assembly 4 and herringbone plate 3, tensioning assembly 5 includes tensioning roller 51, tensioning roller 51 is connected with support frame 52, support plate 53 is arranged below support frame 52, air cylinder 54 is installed on support plate 53, pressure sensor 55 is connected with the end of piston rod of air cylinder 54, and pressure sensor 55 is arranged at the center position of the bottom of support frame 52.

[0040] Still further, two symmetrically arranged guide holes 56 are formed on support plate 53, guide rod 57 is arranged in guide hole 56, and the top end of guide rod 57 is fixedly connected with mounting bracket.

[0041] It is worth mentioning that the filter 27 comprises a shell 271, two screens 272 are arranged in the shell 271 in a top-to-bottom corresponding mode, and the adsorbing filler 273 is arranged between the screens 272, the adsorbing filler 273 can be activated carbon particles, the air blown to the film is filtered and adsorbed, and impurity particles are removed, so that some impurities can not pollute the film, and some particles can not scratch the film, and the quality of the film is improved.

[0042] It is worth noting that the air inlet 274 is arranged at a position close to the top of the shell 271, and the air outlet 275 is arranged at a position close to the bottom of the shell 271, and the two screens 272 are arranged between the air inlet 274 and the air outlet 275.

[0043] Among them, the first motor 226, the fan 26, the second motor 45 and the air cylinder 54 are prior art, and will not be repeated; at the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of the patent, and will not be repeated.

[0044] Working principle and process: the raw materials in the extruder are melted and extruded from the die head 1 position to form a tubular film, the film passes through the air ring 2, the herringbone plate 3 and the traction assembly 4 and is wound by the winding structure, the second motor 45 of the traction assembly 4 is started, and then the chain wheel 43 drives the chain 44 to rotate, so that the driving roller 41 can rotate, and under the action of the driven roller 42, the film can be pulled to move, the fan 26 is started, the air outside the fan 26 is first introduced into the filter 27, filtered and adsorbed by the adsorbing filler 273, and then introduced into the adjustable air outlet 22 through the fan 26, the air volume control valve 24, the air guide branch pipe 23 and the air guide main pipe 25 in sequence, and then discharged through the air outlet head 222 after passing through the rotary joint 223 and the air outlet pipe 221 in sequence, so that the film can be cooled, the first motor 226 is started, and then the gear 225 drives the gear ring 224 and the air outlet pipe 221 to rotate, so that the air outlet direction of the air outlet head 222 can be adjusted upward or downward, and then the air volume control valve 24 can control the air volume of the air outlet head 222 on each annular air pipe 21, the air ring 2 is designed as multiple layers, each layer can independently control the air volume and the air direction, the distribution and action of the air of each layer are optimized, the cooling speed and shape of the film bubble can be better controlled, and the transparency and mechanical properties of the film are improved.

[0045] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0046] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A blow-drawing apparatus for the production of polyethylene antibacterial film, comprising a die head (1), characterized in that: The upper part of the die head (1) is provided with a wind ring (2), the upper part of the wind ring (2) is provided with a herringbone plate (3), one side of the herringbone plate (3) is provided with a traction assembly (4); The wind ring (2) comprises a plurality of annular wind pipes (21) arranged equidistantly, a plurality of adjustable air outlets (22) are arranged on the annular wind pipe (21), the annular wind pipe (21) is connected with a wind guide branch pipe (23), the wind guide branch pipe (23) is provided with a wind volume control valve (24), the wind guide branch pipe (23) is connected with a wind guide main pipe (25), one end of the wind guide main pipe (25) is connected with a fan (26), the inlet of the fan (26) is connected with a filter (27). The adjustable air outlet (22) comprises an air outlet pipe (221), an air outlet head (222) is arranged on the air outlet pipe (221), the two ends of the air outlet pipe (221) are connected with the annular wind pipe (21) through a rotary joint (223), a gear ring (224) is arranged on the air outlet pipe (221), the gear ring (224) is connected with a gear (225) in a meshing mode, the gear (225) is connected with a first motor (226) through a motor shaft.

2. The inflation drawing apparatus for producing polyethylene antibacterial film according to claim 1, characterized in that: The traction assembly (4) comprises two driving rollers (41) arranged correspondingly, a driven roller (42) is arranged above the driving roller (41), one end of the driving roller (41) is connected with a sprocket (43), the sprockets (43) are connected through a chain (44), and one of the sprockets (43) is connected with a second motor (45) through a motor shaft.

3. The inflation-stretching apparatus for producing a polyethylene antibacterial film according to claim 2, wherein: A tensioning assembly (5) is arranged between the traction assembly (4) and the herringbone plate (3), the tensioning assembly (5) comprises a tensioning roller (51), the tensioning roller (51) is connected with a support frame (52), a support plate (53) is arranged below the support frame (52), a cylinder (54) is arranged on the support plate (53), a pressure sensor (55) is connected to the piston rod end of the cylinder (54), and the pressure sensor (55) is arranged at the center position of the bottom of the support frame (52).

4. The inflation drawing apparatus for producing polyethylene antibacterial film according to claim 3, characterized in that: Two symmetrically arranged guide holes (56) are formed in the support plate (53), a guide rod (57) is arranged in the guide hole (56), and the top end of the guide rod (57) is fixedly connected with a mounting frame.

5. The inflation drawing apparatus for producing polyethylene antibacterial film according to claim 1, characterized in that: The filter (27) comprises an outer shell (271), two separation nets (272) are arranged correspondingly in the outer shell (271), and adsorption fillers (273) are arranged between the separation nets (272).

6. The inflation-stretching apparatus for producing a polyethylene antibacterial film according to claim 5, wherein: An air inlet (274) is arranged at the top of one side of the outer shell (271), an air outlet (275) is arranged at the bottom of the other side, and the two separation nets (272) are arranged between the air inlet (274) and the air outlet (275).

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