Coextrusion down-blow film machine

Abstract

The utility model relates to the technical field of film blowing equipment, concretely relates to co -extrusion lower blow film blowing machine, including film blowing equipment, stable bubble equipment, film blowing head and corona equipment, above -mentioned equipment sets gradually according to the film blowing order, including upper and lower two groups of mounting plate in stable bubble equipment, adjustment structure fixed between both and the motor fixed in top mounting plate, the output end of motor is connected with driving wheel transmission, including bearing seat fixed in two groups of mounting plate inboard wall in adjustment structure, the rod portion set up between bearing seat and the bubble rod fixed in the rod portion, the top of rod portion is equipped with driven wheel, driving wheel and driven wheel are connected through chain transmission, the connecting hole of rod portion is equidistant and is distributed with each group of rod portion staggered, the bubble rod is fixed in the connecting hole through screw thread structure and locating nut, the position and angle of bubble rod are conveniently adjusted flexibly according to bubble size and form, realize accurate bubble stabilization to different specifications film production, expand the application range of equipment.

Description

Technical Field

[0001] This utility model relates to the field of blown film equipment technology, specifically to a co-extrusion blown film machine. Background Technology

[0002] In the field of co-extrusion blown film production, film forming quality and production efficiency closely depend on the synergistic performance of various equipment components, especially the stability of the foam stabilization system and transmission structure. Traditional blown film machines have many technical pain points in practical applications.

[0003] Traditional bubble stabilizing devices typically use straight rods, which don't conform well to the curved shape of the bubbles in the film, making it difficult to effectively suppress bubble movement and easily leading to defects such as uneven film thickness and wrinkles. Furthermore, the fixed installation position of the bubble stabilizing rod cannot be flexibly adjusted according to bubble size and material properties, resulting in poor adaptability to different film specifications. During production changeovers, the entire component must be replaced, which is cumbersome and costly. The connection hole design of components such as the rod and stabilizing rod in traditional equipment is chaotic and lacks a unified standard, leading to poor interchangeability between different batches of components. When the bubble stabilizing rod wears out or needs to be replaced, matching parts must be custom-made, extending maintenance cycles and increasing costs. In addition, the fixing method of the bubble stabilizing rod to the rod body is complex, and the disassembly and assembly process is time-consuming, severely impacting equipment uptime. Utility Model Content

[0004] Technical problems to be solved In view of the above-mentioned shortcomings of the existing technology, the present invention provides a co-extrusion blown film machine, which can effectively solve the problems in the existing technology.

[0005] This utility model provides a co-extrusion blown film machine, including a blown film device, a foam stabilizing device, a blown film head, and a corona device. The above devices are arranged in sequence according to the blown film order. The foam stabilizing device includes two sets of mounting plates, an adjustment structure fixed between the two, and a motor fixed to the top mounting plate. The output end of the motor is connected to the drive wheel. The adjustment structure includes a bearing seat fixed to the inner sidewall of the two sets of mounting plates, a rod set between the bearing seats, and a foam stabilizing rod fixed in the rod. A driven wheel is sleeved and fixed at the top of the rod. The drive wheel and the driven wheel are connected by a chain for transmission.

[0006] Furthermore, the top of the mounting plate is fixedly connected to the external structure via an angle plate; the mounting plate is fixed to the external structure via an L-shaped angle plate, and the straight groove in the middle of the angle plate, in conjunction with the pin and nut connection slot, allows for flexible adjustment of the installation position to adapt to different external installation environments, enhancing the stability of the connection between the equipment and the external structure and reducing operational shaking caused by installation deviations; the design of the drive wheel protruding outward from the inside of the chain increases the engagement depth with the chain, reduces the risk of chain slippage during transmission, ensures the continuity of power transmission, and improves the stability of the transmission structure.

[0007] Furthermore, each of the rods has two sets of connecting holes in its middle section. The bubble stabilizing rod has an inward-curving arc shape, and one end of the bubble stabilizing rod has a threaded structure. The bubble stabilizing rod is set in the connecting hole, and this side of the bubble stabilizing rod is fixedly connected to the positioning nut. The inward-curving structure of the bubble stabilizing rod conforms to the shape of the film bubble, which can more closely stabilize the bubble, reduce bubble shaking, reduce film thickness deviation, and improve the uniformity of film formation. The connecting holes of the rod are equidistantly arranged, and the connecting holes of each set of rods are staggered. The bubble stabilizing rod is fixed in the connecting hole by the positioning nut through the threaded structure, which makes it easy to flexibly adjust the position and angle of the bubble stabilizing rod according to the size and shape of the bubble, so as to achieve precise bubble stabilization for the production of films of different specifications and expand the applicability of the equipment.

[0008] Furthermore, both sets of mounting plates have through slots in the middle, the output end of the motor passes through the slots, the corner plate is an L-shaped plate structure with a straight slot in the middle, and the corner plate achieves a stable connection between the two sets of structures by passing through the slot and the hole through the support slot and the hole via a pin and a nut.

[0009] Furthermore, the drive wheel protrudes outward from the inside of the chain; the motor drives the drive wheel, driven wheel, and rod to rotate via the chain, thereby driving the bubble stabilizing rod to work. The transmission path is clear, the power transmission efficiency is high, and energy loss is reduced; the bearing seat supports the rotation of the rod, reducing the frictional resistance when the rod rotates, reducing component wear, extending the service life of the equipment, and ensuring the smoothness of the bubble stabilizing rod's rotation, thus improving the bubble stabilizing effect.

[0010] Furthermore, the connecting holes are arranged in two sets at equal intervals on the rod, and the connecting holes in each set of the rod are staggered; the bubble stabilizing rod is fixed to the positioning nut by a threaded structure, which facilitates quick disassembly and replacement. When the bubble stabilizing rod is worn or needs to be replaced with a different specification, it can save maintenance time and improve the uptime of the equipment; the connection method between the corner plate and the mounting plate and the external structure is simple and reliable, and easy to disassemble and assemble, which facilitates the installation, debugging and subsequent maintenance of the equipment and reduces maintenance costs.

[0011] This utility model features an installation plate that is fixed to an external structure via an L-shaped corner plate. The straight groove in the center of the corner plate, combined with a pin and nut connection hole, allows for flexible adjustment of the installation position to adapt to different external installation environments, enhancing the stability of the connection between the equipment and the external structure and reducing operational shaking caused by installation deviations. The connecting holes on the rods are equidistantly arranged, with each group of rods having staggered connecting holes. The bubble stabilizing rod is fixed to the connecting hole via a threaded structure and a positioning nut, facilitating flexible adjustment of the position and angle of the bubble stabilizing rod according to the size and shape of the bubbles. This enables precise bubble stabilization for the production of films of different specifications, expanding the applicability of the equipment. The threaded structure and positioning nut fixation of the bubble stabilizing rod facilitate quick disassembly and replacement, saving maintenance time and improving equipment uptime when the bubble stabilizing rod wears out or needs to be replaced with a different specification. The compact layout of all components, such as the motor output end passing through the groove in the center of the installation plate and the ingeniously designed chain drive structure, minimizes the space occupied by the equipment while ensuring functionality, facilitating workshop layout planning. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the foam stabilizing device of this utility model; Figure 3 This is an exploded view of the structure of the foam stabilizing device in this utility model; Figure 4 This is a structural exploded view of the adjustment structure and mounting plate in this utility model; Figure 5 This is a structural breakdown diagram of the adjustment structure in this utility model.

[0014] The labels in the diagram represent: 1. Blown film equipment; 2. Foam stabilizing equipment; 21. Mounting plate; 211. Groove; 22. Angle plate; 23. Motor; 24. Drive wheel; 25. Adjustment structure; 251. Driven wheel; 252. Rod; 253. Bearing seat; 254. Foam stabilizing rod; 255. Positioning nut; 256. Connecting hole; 26. Chain; 3. Blown film head; 4. Corona treatment equipment. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0016] The present invention will be further described below with reference to the embodiments.

[0017] Example: Co-extrusion blown film machine, see attached diagram. Figure 1 - Appendix Figure 5 The system includes a blown film device 1, a foam stabilizing device 2, a blown film head 3, and a corona discharge device 4. These devices are arranged sequentially according to the blown film blowing order. The foam stabilizing device 2 includes two sets of mounting plates 21, an adjustment structure 25 fixed between them, and a motor 23 fixed to the top mounting plate 21. The output end of the motor 23 is connected to a drive wheel 24. The adjustment structure 25 includes bearing seats 253 fixed to the inner walls of the two sets of mounting plates 21, a rod portion 252 disposed between the bearing seats 253, and a foam stabilizing rod 254 fixed within the rod portion 252. A driven wheel 251 is sleeved and fixed to the top of the rod portion 252. The driving wheel 24 and the driven wheel 251 are connected by a chain 26. The mounting plate 21 is fixed to the external structure by an L-shaped corner plate 22. The straight groove in the middle of the corner plate 22 is matched with the pin and nut connecting the slot 211, which can flexibly adjust the installation position to adapt to different external installation environments, enhance the stability of the connection between the equipment and the external structure, and reduce the shaking caused by installation deviation. The design of the driving wheel 24 protruding from the inside to the outside of the chain 26 can increase the meshing depth with the chain 26, reduce the risk of the chain 26 falling off during transmission, ensure the continuity of power transmission, and improve the stability of the transmission structure.

[0018] The top of the mounting plate 21 is fixedly connected to the external structure via a corner plate 22; both sets of mounting plates 21 have through slots 211 in their middle sections, and the output end of the motor 23 passes through the slots 211. The corner plate 22 is an L-shaped plate structure with a straight slot in its middle section. The corner plate 22 is connected to the two sets of structures by a pin and a nut passing through the slot and the holes 211. The bubble stabilizing rod 254 has an inward arc-shaped structure that conforms to the shape of the film bubbles, allowing for more precise stabilization of the bubbles, reducing bubble swaying, decreasing film thickness deviation, and improving the uniformity of film formation. The connecting holes 256 of the rod 252 are equidistantly arranged, and the connecting holes 256 of each set of rods 252 are staggered. The bubble stabilizing rod 254 is fixed in the connecting hole 256 by a threaded structure and a positioning nut 255, which facilitates flexible adjustment of the position and angle of the bubble stabilizing rod 254 according to the size and shape of the bubbles, so as to achieve precise bubble stabilization for the production of films of different specifications and expand the applicability of the equipment. The motor 23 drives the drive wheel 24, the driven wheel 251 and the rod 252 to rotate through the chain 26, thereby driving the bubble stabilizing rod 254 to work. The transmission path is clear, the power transmission efficiency is high, and the energy loss is reduced. The bearing seat 253 supports the rotation of the rod 252, reduces the frictional resistance when the rod 252 rotates, reduces the wear of parts, extends the service life of the equipment, and at the same time ensures the smoothness of the rotation of the bubble stabilizing rod 254 and improves the bubble stabilization effect.

[0019] Two sets of connecting holes 256 are provided in the middle of each rod 252. The bubble stabilizing rod 254 has an inward arc-shaped structure, and one end of the bubble stabilizing rod 254 has a threaded structure. The bubble stabilizing rod 254 is set in the connecting hole 256, and this side of the bubble stabilizing rod 254 is fixedly connected to the positioning nut 255. Two sets of connecting holes 256 are equally spaced on the rod 252, and the connecting holes 256 of the rod 252 in each set are staggered. The bubble stabilizing rod 254 is fixed to the positioning nut 255 by the threaded structure, which facilitates quick disassembly and replacement. When the bubble stabilizing rod 254 is worn or needs to be replaced with a different specification, it can save maintenance time and improve the uptime of the equipment. The connection method between the corner plate 22 and the mounting plate 21 and the external structure is simple and reliable, and easy to disassemble and assemble, which facilitates the installation, debugging and subsequent maintenance of the equipment and reduces maintenance costs.

[0020] The drive wheel 24 protrudes outward from the inside of the chain 26; the components are arranged in a compact manner, such as the output end of the motor 23 passing through the slot 211 in the middle of the mounting plate 21; the transmission structure of the chain 26 is cleverly designed, which reduces the space occupied by the equipment while ensuring the function is realized, which is conducive to workshop layout planning; the structural design of components such as the rod 252 and the bubble stabilizing rod 254 is standardized; the connecting holes 256 are equidistant and staggered, which facilitates mass production and assembly and reduces manufacturing costs.

[0021] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A co-extrusion blown film machine, characterized in that, The equipment includes a blown film device (1), a foam stabilizing device (2), a blown film head (3), and a corona device (4). The above equipment is arranged in sequence according to the blown film order. The foam stabilizing device (2) includes two sets of mounting plates (21) at the top and bottom, an adjustment structure (25) fixed between the two, and a motor (23) fixed to the top mounting plate (21). The output end of the motor (23) is connected to the drive wheel (24) for transmission. The adjustment structure (25) includes a bearing seat (253) fixed to the inner side wall of the two sets of mounting plates (21), a rod (252) set between the bearing seats (253), and a foam stabilizing rod (254) fixed in the rod (252). A driven wheel (251) is sleeved and fixed at the top of the rod (252). The drive wheel (24) and the driven wheel (251) are connected by a chain (26) for transmission.

2. The co-extrusion blown film machine according to claim 1, characterized in that, The top of the mounting plate (21) is fixedly connected to the external structure via a corner plate (22).

3. The co-extrusion blown film machine according to claim 1, characterized in that, Two sets of connecting holes (256) are provided in the middle of the rod (252). The bubble stabilizing rod (254) has an inward arc-shaped structure and a threaded structure is provided at one end of the bubble stabilizing rod (254). The bubble stabilizing rod (254) is set in the connecting hole (256) and the side of the bubble stabilizing rod (254) is fixedly connected to the positioning nut (255).

4. The co-extrusion blown film machine according to claim 2, characterized in that, Both sets of mounting plates (21) have through holes (211) in the middle. The output end of the motor (23) passes through the holes (211). The corner plate (22) is an L-shaped plate structure with a straight slot in the middle. The corner plate (22) achieves a stable connection between the two sets of structures by passing through the support slot and the holes (211) with a pin and a nut.

5. The co-extrusion blown film machine according to claim 4, characterized in that, The drive wheel (24) protrudes outward from the inside of the chain (26).

6. The co-extrusion blown film machine according to claim 3, characterized in that, The connecting holes (256) are provided in two sets at equal intervals on the rod (252), and the connecting holes (256) of each set of the rod (252) are staggered.

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