Cold air barrel in film blowing machine

Abstract

The utility model relates to an internal cold air barrel of a film blowing machine, which comprises a shell, a first air outlet, a second air outlet and a connecting pipe connected with an air ring are arranged at the top of the shell, a partition plate is arranged in the shell and divides the shell into a first cavity and a second cavity, the first air outlet is communicated with the first cavity, the second air outlet is communicated with the second cavity, and the first air outlet is communicated with the second cavity. A first air inlet and a second air inlet which are communicated with the first cavity and the second cavity respectively are formed in the periphery of the shell, a connecting table vertically penetrates through the center of the shell, a connecting pipe is arranged on the periphery of the connecting table and is communicated with the interior of the connecting table, and a third air inlet is further formed in the periphery of the shell and is communicated with the interior of the connecting table; the first air inlet, the second air inlet and the third air inlet in the periphery of the shell communicate with the first cavity, the second cavity and the interior of the connecting table correspondingly, the connecting pipe is arranged on the periphery of the connecting table and communicates with the interior of the connecting table, the air flow transmission efficiency is further improved, the air barrel structure is simplified, the manufacturing cost is reduced, and the air flow control precision is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic film production equipment, and specifically relates to a cold air barrel in a film blowing machine. BACKGROUND

[0002] The air barrel of the film blowing machine is an important component of the film blowing production line, which is usually located at the upper end or lower end of the machine frame for installing and supporting the air ring. The air barrel is internally provided with an air duct, and air is introduced into the air ring by a fan to provide uniform airflow for film blowing, ensuring that the thickness of the plastic film is uniform and the cooling effect is consistent during the blowing process. The design of the air barrel usually takes into account ease of installation, adjustment, and maintenance to adapt to different specifications of air rings and production requirements. The compact structure matches the overall design of the film blowing machine, providing a strong guarantee for efficient and stable film production.

[0003] Publication No. CN210651865U discloses a co-extrusion air barrel of a film blowing machine, which includes a hollowly arranged upper air barrel and a lower air barrel. The bottom of the lower air barrel is in communication with a blower, and the sidewall of the lower air barrel is provided with circularly distributed first pipe joints. The upper air barrel is provided with annularly distributed second pipe joints. The first pipe joints and the second pipe joints are in communication through an air pipe. The upper air barrel is in the shape of a circular ring, and a rotatable air outlet seat is inserted into the upper air barrel. The air outlet seat is provided with a groove, and the bottom of the groove is provided with an annular circular pipe. The outer wall of the circular pipe and the inner wall of the groove form an air outlet channel. The inner wall of the groove is provided with circularly distributed through holes that are in communication with the inner cavity of the upper air barrel, thereby ensuring the forming quality of the cylindrical film. This technology uses the lower air barrel to connect the blower to deliver air to the upper air barrel through the pipe joints for air outlet. The air delivery structure is too complex and requires the cooperation of the upper air barrel and the lower air barrel to deliver air. There is still room for improvement in this technology. SUMMARY

[0004] The technical problem to be solved by the utility model lies in providing a cold air barrel in a film blowing machine to overcome the shortcomings of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme. A cold air barrel in a film blowing machine, including the casing, the casing top is equipped with first air outlet, second air outlet and the connecting pipe of connecting air ring, its characterized in being that: the casing is equipped with the baffle, the baffle divides the first cavity, the second cavity in the casing, first air outlet with first cavity is conducted, second air outlet is worn and is equipped with in first cavity and the baffle with second cavity is conducted, the casing periphery is equipped with respectively in first cavity, second cavity conducted first air inlet, second air inlet, the casing center is vertically worn and is equipped with the connecting table, the connecting table is set up in first cavity, second cavity and the baffle and is conducted, the connecting pipe is set up in the periphery of connecting table and the inside of connecting table is communicated, the casing periphery is equipped with third air inlet still, third air inlet with the inside of connecting table is communicated.

[0006] By adopting the technical scheme, the inner cooling air barrel is divided into the first cavity and the second cavity by the inner partition plate, so that the airflow is controlled and conducted in different zones, the first air outlet is directly connected with the first cavity, and the second air outlet passes through the partition plate to be connected with the second cavity, so that the airflow path is simplified and the dependence on complex structure is reduced, the first air inlet, the second air inlet and the third air inlet on the outer periphery of the shell are respectively connected with the first cavity, the second cavity and the inside of the connecting table, so that the uniform supply and rapid exchange of the airflow are ensured, the connecting pipe is arranged on the outer periphery of the connecting table and is connected with the inside, so that the transmission efficiency of the airflow is further improved, the structure of the air barrel is simplified, the manufacturing cost is reduced, and the airflow control precision is improved, so that the forming quality of the cylindrical film is better guaranteed.

[0007] The inner cooling air barrel of the film blowing machine can be further provided with the following arrangement: the connecting table is higher than the shell to form a boss, the first air outlet and the second air outlet are arranged around the boss and are spaced apart from the top of the shell, and the connecting pipe is arranged around the outer periphery of the boss and is spaced apart from the first air outlet and the second air outlet.

[0008] By adopting the technical scheme, the inner cooling air barrel of the film blowing machine is provided with the first air outlet and the second air outlet around the boss on the top of the shell, and the connecting pipe is arranged around the outer periphery of the boss, so that the uniform distribution and rapid discharge of the airflow are realized, the boss makes the air outlets higher than the top of the shell, which is helpful for the diffusion of the airflow to the surrounding, reduces the direct impact of the airflow on the film forming, and improves the stability and quality of the film forming, the arrangement of the connecting pipe ensures that the airflow can uniformly reach each air outlet, further enhances the uniformity of the cooling effect, simplifies the airflow path, improves the cooling efficiency, and better meets the needs of high-quality film production.

[0009] The inner cooling air barrel of the film blowing machine can be further provided with the following arrangement: the shell is provided with a height adjusting assembly on the outer periphery.

[0010] By adopting the technical scheme, the height adjusting assembly is arranged on the outer periphery of the inner cooling air barrel of the film blowing machine, so that the height of the air barrel can be adjusted according to different production needs and film forming characteristics, the flexibility and adaptability of the equipment are enhanced, the best cooperation between the air barrel and the film forming area can be ensured, the cooling effect of the airflow on the film is optimized, the height adjusting assembly makes the operation more convenient, the changes on the production line can be quickly responded, and the production efficiency is improved.

[0011] The inner cooling air barrel of the film blowing machine can be further provided with the following arrangement: the height adjusting assembly includes an L-shaped connecting piece arranged on the outer periphery of the shell, the L-shaped connecting piece is provided with an adjusting hole in the horizontal plane, an adjusting rod is arranged in the adjusting hole, a bottom of the adjusting rod is provided with an abutting foot through a fixing structure, and the adjusting rod is provided with an adjusting bolt at an upper end of the L-shaped adjusting rod.

[0012] By means of the cooperation of the L-shaped connecting piece, the adjusting rod and the adjusting bolt, the height of the shell is precisely adjusted, the L-shaped connecting piece serves as a stable supporting structure, the stability during the adjusting process is ensured, the adjusting rod in the adjusting hole can be flexibly moved up and down, the fixed structure at the bottom of the adjusting rod and the abutting foot are designed, the connection stability between the adjusting rod and the wind barrel is enhanced, the shaking or displacement during the adjusting process is prevented, and the adjusting bolt at the upper end provides a convenient adjusting means for the operator, so that the height adjustment is both fast and accurate.

[0013] The height adjusting assembly of the inner cooling wind barrel of the film blowing machine can be further provided with the fixed structure, which comprises an abutting groove arranged at the bottom of the adjusting rod, a fixed groove arranged at the bottom of the abutting foot, the bottom of the adjusting rod is arranged in the fixed groove to make the top of the abutting foot abut against the abutting groove, a fixed hole is arranged in the fixed groove at the bottom of the adjusting rod, a fixed bolt for fixing the abutting foot is arranged in the fixed hole, and an abutting piece is further arranged between the fixed bolt and the inner wall of the fixed groove.

[0014] By means of the abutment between the abutting groove at the bottom of the adjusting rod and the top of the abutting foot, the stable connection between the adjusting rod and the abutting foot is realized. The fixed groove and the fixed hole are arranged, so that the fixed bolt can firmly fix the abutting foot on the adjusting rod, the loosening or displacement during the adjusting process is prevented, the existence of the abutting piece further enhances the close fit between the fixed bolt and the inner wall of the fixed groove, and the stability and reliability of the whole fixed structure are ensured.

[0015] The first air inlet, the second air inlet and the third air inlet at the periphery of the shell are respectively communicated with the first cavity, the second cavity and the inside of the connecting table, the uniform supply and rapid exchange of the airflow are ensured, the connecting pipe is arranged at the periphery of the connecting table and is communicated with the inside, the transmission efficiency of the airflow is further enhanced, the structure of the wind barrel is simplified, the manufacturing cost is reduced, and the airflow control precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is an internal structure view of the utility model;

[0018] Figure 3 It is an explosion view of the height adjusting assembly of the utility model;

[0019] Figure 4 It is a bottom structure view of the abutting foot of the utility model;

[0020] Figure 5 It is a structure view of the adjusting bolt of the utility model;

[0021] Label annotation: 1 - shell, 2 - first air outlet, 3 - second air outlet, 4 - connecting pipe, 5 - partition, 6 - first cavity, 7 - second cavity, 8 - first air inlet, 9 - second air inlet, 10 - connecting table, 11 - third air inlet, 12 - boss, 13 - L-shaped connecting piece, 14 - adjusting hole, 15 - adjusting rod, 16 - abutting foot, 17 - adjusting bolt, 18 - abutting groove, 19 - fixing groove, 20 - fixing hole, 21 - fixing bolt, 22 - abutting piece. DETAILED DESCRIPTION

[0022] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

[0023] As Figures 1-2The utility model provides the following technical scheme, a kind of blowing film machine inner cold air barrel, including shell 1, shell 1 top is equipped with first air outlet 2, second air outlet 3 and the connecting pipe 4 of connecting wind ring, it is characterized by: shell 1 is equipped with baffle 5, baffle 5 divides into first cavity 6, second cavity 7 in shell 1, first air outlet 2 is communicated with first cavity 6, second air outlet 3 is communicated with second cavity 7 by being equipped in first cavity 6 and baffle 5, the periphery of shell 1 is equipped with first air inlet 8, second air inlet 9 respectively in first cavity 6, second cavity 7 communication, shell 1 center is vertically equipped with connecting table 10, connecting table 10 is set through in first cavity 6, second cavity 7 and baffle 5, connecting pipe 4 is set in the periphery of connecting table 10 and the inside of connecting table 10 is communicated, the periphery of shell 1 is further equipped with third air inlet 11, and third air inlet 11 is communicated with the inside of connecting table 10, and inner cold air barrel is divided into first cavity 6 and second cavity 7 by the setting of baffle 5 in shell 1, realizes the zoned control and conduction of airflow, and first air outlet 2 is directly communicated with first cavity 6, and second air outlet 3 is communicated with second cavity 7 by passing through baffle 5, simplifies airflow path, reduces the dependence on complex structure, and the periphery of shell 1 is equipped with first air inlet 8, second air inlet 9 and third air inlet 11, and the inside of connecting table 10 is communicated with first cavity 6, second cavity 7 and third air inlet 11 respectively, to ensure the uniform supply and rapid exchange of airflow, and connecting pipe 4 is set in the periphery of connecting table 10 and is communicated with the inside, to further enhance the transmission efficiency of airflow, simplify the structure of air barrel, reduce manufacturing cost, also improve airflow control precision, to better guarantee the forming quality of cylindrical film, and connecting table 10 is higher than shell 1 and forms boss 12, and first air outlet 2 and second air outlet 3 are arranged at the top of shell 1 with boss 12 being spaced apart, and connecting pipe 4 is arranged around the periphery of boss 12 and is spaced apart from first air outlet 2 and second air outlet 3, and the blowing film machine inner cold air barrel is arranged around the periphery of boss 12 on the top of shell 1 and is spaced apart from first air outlet 2 and second air outlet 3, to realize the uniform distribution and rapid discharge of airflow, and boss 12 makes the air outlet higher than the top of shell 1, to help airflow diffuse in all directions, to reduce the direct impact of airflow on film forming, to improve the stability and quality of film forming, and the arrangement of connecting pipe 4 ensures that airflow can uniformly reach each air outlet, to further enhance the uniformity of cooling effect, to simplify airflow path, to improve cooling efficiency, to better meet the needs of high-quality film production.

[0024] As Figures 3-5The utility model provides the following technical scheme, a kind of blow film machine inner cold air barrel, shell 1 is located outer periphery and is provided with height adjusting assembly, blow film machine inner cold air barrel is provided with height adjusting assembly in outer periphery, so that air barrel can be adjusted in height according to different production needs and film forming characteristics, the flexibility and adaptability of equipment are enhanced, the best cooperation of air barrel and film forming area can be ensured, to optimize the cooling effect of airflow to film, the existence of height adjusting assembly, more convenient operation can be quickly responded to change on production line, improve production efficiency, height adjusting assembly includes the L-shaped connecting piece 13 being set to the outer periphery of shell 1, L-shaped connecting piece 13 is located horizontal plane and is provided with adjusting hole 14, adjusting rod 15 is arranged in adjusting hole 14, adjusting rod 15 bottom is provided with abutting foot 16 by fixed structure, adjusting rod 15 is located L-shaped adjusting rod 15 upper end and is provided with adjusting bolt 17, by the cooperation of L-shaped connecting piece 13 and adjusting rod 15, adjusting bolt 17, the accurate adjustment of the height of shell 1 is realized, L-shaped connecting piece 13 is as stable support structure, the stability in the adjustment process is ensured, adjusting rod 15 in adjusting hole 14 can be flexibly moved up and down, and the fixed structure and abutting foot 16 design of adjusting rod 15 bottom, the connection stability between adjusting rod 15 and air barrel is enhanced, prevent the shaking or displacement in the adjustment process, the adjusting bolt 17 of upper end provides convenient adjustment means for operator, so that height adjustment is both fast and accurate, fixed structure includes the abutting groove 18 being set to the bottom of adjusting rod 15, fixed groove 19 is opened in the bottom of abutting foot 16, adjusting rod 15 bottom is arranged in fixed groove 19 and promotes the top of abutting foot 16 and abutting groove 18 and abuts, fixed hole 20 is opened in the bottom of adjusting rod 15 in fixed groove 19, fixed hole 20 is provided with the fixed bolt 21 of fixed abutting foot 16, fixed bolt 21 and fixed groove 19 inner wall are further provided with abutting piece 22, by the abutting of the abutting groove 18 of adjusting rod 15 bottom and the top of abutting foot 16, the stable connection of adjusting rod 15 and abutting foot 16 is realized.The setting of fixed groove 19 and fixed hole 20, so that fixed bolt 21 can firmly fix abutting foot 16 on adjusting rod 15, prevent the loosening or displacement in the adjustment process, the existence of abutting piece 22 further enhances the close fitting of fixed bolt 21 and fixed groove 19 inner wall, ensure the stability and reliability of entire fixed structure.

[0025] The utility model has the advantages that: the first air inlet 8, the second air inlet 9 and the third air inlet 11 of the outer periphery of the shell 1 are respectively communicated with the first cavity 6, the second cavity 7 and the interior of the connecting table 10, ensuring uniform supply and rapid exchange of airflow; the connecting pipe 4 is arranged on the outer periphery of the connecting table 10 and is communicated with the interior, further enhancing the transmission efficiency of airflow, simplifying the structure of the air barrel, reducing the manufacturing cost and improving the airflow control precision.

Claims

1. A cold air bucket in a film blowing machine, comprising a shell, a first air outlet, a second air outlet and a connecting pipe connecting the air ring are arranged on the top of the shell, characterized in that: The shell is internally provided with a partition plate, which divides the shell into a first cavity and a second cavity.

2. A film internal cooling drum according to claim 1, characterized in that: The connecting platform is higher than the shell to form a convex platform, the first air outlet and the second air outlet are arranged at the top of the shell and spaced around the convex platform, and the connecting pipe is arranged around the outer periphery of the convex platform and spaced from the first air outlet and the second air outlet.

3. A film internal cooling drum according to claim 2, wherein: The height adjusting assembly is arranged on the outer periphery of the shell.

4. A film internal cooling drum according to claim 3, wherein: The height adjusting assembly comprises an L-shaped connecting piece arranged on the outer periphery of the shell, an adjusting hole is arranged on the L-shaped connecting piece, an adjusting rod is arranged in the adjusting hole, an abutting foot is arranged on the bottom of the adjusting rod through a fixing structure, and an adjusting bolt is arranged on the upper end of the L-shaped adjusting rod.

5. A film internal cooling drum according to claim 4, wherein: The fixing structure comprises an abutting groove arranged on the bottom of the adjusting rod, a fixing groove is arranged on the bottom of the abutting foot, the bottom of the adjusting rod is arranged in the fixing groove to abut the top of the abutting foot with the abutting groove, a fixing hole is arranged in the fixing groove on the bottom of the adjusting rod, a fixing bolt is arranged in the fixing hole to fix the abutting foot, and an abutting piece is arranged between the fixing bolt and the inner wall of the fixing groove.

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