Film blowing machine with adjustable film blowing caliber

Abstract

The utility model discloses a film blowing machine with adjustable film blowing caliber, which belongs to the field of film blowing machines and comprises a windshield, a bottom plate is fixedly connected to the bottom surface of the windshield, an adjusting component is movably mounted in the windshield and comprises a movable rod, a vertical roller, a connecting plate, a spring, a push rod, a rotating plate, an arc-shaped groove, a latch and a gear. Transverse airflow impact can be effectively blocked through the arranged windproof cover, bubbles in the windproof cover are not prone to being impacted by transverse airflow and not prone to being bent, the shapes of the bubbles can be conveniently kept, a rotating plate is pushed to rotate through clamping teeth through an arranged adjusting assembly and a gear, a push rod is squeezed inwards or outwards through rotation, and the bubbles are prevented from being damaged. The vertical rollers are mutually folded or spread, so that the vertical rollers are movably adjusted according to the sizes of the film bubbles, the device is suitable for the film bubbles with different inner diameters, the applicability is improved, only one stepping motor is needed for driving the rotating plate to rotate, driving equipment is reduced, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of blown film machines, and in particular to a blown film machine with an adjustable blown film nozzle diameter. Background Technology

[0002] A blown film machine heats and melts plastic particles and then blows them into a thin film. There are many types of blown film machines, including those for PE, POF, PVC, etc. Using brand-new particles results in virgin material, with uniform color, cleanliness, and good bag stretching. In the existing technology, Chinese utility model patent with publication number CN216832155U discloses an adjustable blown film stabilizing device. This utility model features a stabilizing component with a flared opening. The inner diameter of the stabilizing device can be adjusted by changing the size of the flared opening, reducing adjustment time and making it suitable for various film bubbles with different inner diameters.

[0003] However, the frame structure composed of the mounting base and the lead screw in this utility model cannot block the lateral airflow, making the membrane bubble easily blown by the lateral air path, causing the membrane bubble to bend laterally. At the same time, the size of the inner diameter is driven by the transmission drive components on both sides. Setting transmission drive components on both sides at the same time will increase the cost, so improvement is needed. Utility Model Content

[0004] The main objective of this invention is to provide a blown film machine with an adjustable blown film nozzle diameter, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An adjustable blown film extrusion machine includes a windproof cover. A base plate is fixedly connected to the bottom surface of the windproof cover. An adjustment assembly is movably installed inside the windproof cover. The adjustment assembly includes a movable rod, a vertical roller, a connecting plate, a spring, a push rod, a rotating plate, an arc-shaped groove, a locking tooth, and a gear. The movable rod is movably installed on the windproof cover. The vertical roller is fixedly connected to one end of the movable rod and located inside the windproof cover. The connecting plate is fixedly connected to the other end of the movable rod and located outside the windproof cover. The spring is movably installed on the movable rod. The push rod is fixedly connected to the lower end of the connecting plate. The rotating plate is movably installed on the windproof cover. The arc-shaped groove is formed on the rotating plate. The push rod is movably installed in the arc-shaped groove. The locking tooth is fixedly connected to the side of the rotating plate. The gear is movably installed with the locking tooth.

[0007] Preferably, the adjustment assembly further includes a mounting platform, which is fixedly connected to the windproof cover. The movable rod passes through the mounting platform and the windproof cover in sequence, and the spring is located between the connecting plate and the mounting platform.

[0008] Preferably, the adjustment assembly further includes a slider and a slide rod, one end of the slide rod is fixedly connected to the base plate, and the other end of the slide rod is fixedly connected to the windproof cover. The slider is fixedly connected to the lower end of the push rod, and the slider and the slide rod are movably installed.

[0009] Preferably, the adjustment assembly further includes an upper limiting plate and a lower limiting plate, the upper limiting plate and the lower limiting plate being fixedly connected to the windproof cover, and the rotating plate being movably installed between the upper limiting plate and the lower limiting plate.

[0010] Preferably, the adjustment assembly further includes a stepper motor and a side plate, the side plate being fixedly connected to the side of the base plate, the stepper motor being fixedly connected to the side plate, and the gear being fixedly connected to the output shaft of the stepper motor.

[0011] Preferably, the adjustment assembly further includes two limiting heads, which are fixedly connected to the side of the rotating plate, and the locking teeth are movably installed between the limiting heads.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the windproof cover can effectively block the impact of lateral airflow, and the membrane bubble inside the windproof cover is not easily blown into bending by the external airflow, thus maintaining the shape of the membrane bubble.

[0014] In this invention, through the set adjustment component, the gear pushes the rotating plate to rotate through the toothed teeth, so that the rotation squeezes the push rod inward or outward, causing the vertical rollers to close or spread out, thereby adjusting the movement according to the size of the membrane bubble, and is suitable for membrane bubbles with different inner diameters.

[0015] In this invention, the rotation of the rotating plate only requires one stepper motor to drive it through the set adjustment component, thereby reducing the driving equipment and lowering the cost. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the windproof cover of this utility model;

[0018] Figure 3 This is a schematic diagram of the connection structure of the movable rod, connecting plate, and sliding rod of this utility model;

[0019] Figure 4 This is a schematic diagram of the rotating plate of this utility model.

[0020] In the diagram: 1. Windproof cover; 2. Base plate; 3. Adjustment assembly; 301. Movable rod; 302. Vertical roller; 303. Mounting platform; 304. Connecting plate; 305. Spring; 306. Push rod; 307. Slider; 308. Slide rod; 309. Upper limiting plate; 310. Lower limiting plate; 311. Rotating plate; 312. Arc groove; 313. Clamping tooth; 314. Limiting head; 315. Gear; 316. Stepper motor; 317. Side plate. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2 and Figure 3As shown, a blown film machine with an adjustable blown film nozzle includes a windproof cover 1. A base plate 2 is fixedly connected to the bottom surface of the windproof cover 1. An adjustment assembly 3 is movably installed inside the windproof cover 1. The adjustment assembly 3 includes a movable rod 301, a vertical roller 302, a connecting plate 304, a spring 305, a push rod 306, a rotating plate 311, an arc groove 312, a locking tooth 313, and a gear 315. The movable rod 301 is movably installed on the windproof cover 1, and the vertical roller 302 is fixedly connected to one end of the movable rod 301 and located inside the windproof cover 1. Position: The connecting plate 304 is fixedly connected to the other end of the movable rod 301 and located on the outside of the windproof cover 1. The spring 305 is movably mounted on the movable rod 301. The push rod 306 is fixedly connected to the lower end of the connecting plate 304. The adjusting assembly 3 also includes a mounting platform 303, which is fixedly connected to the windproof cover 1. The movable rod 301 passes through the mounting platform 303 and the windproof cover 1 in sequence. The spring 305 is located between the connecting plate 304 and the mounting platform 303. The adjusting assembly 3 also includes a slider 307 and... A sliding rod 308 is fixedly connected at one end to the base plate 2 and at the other end to the windproof cover 1. A slider 307 is fixedly connected to the lower end of the push rod 306, and the slider 307 is movably installed with the sliding rod 308. A connecting plate 304 is located on the outer side of the mounting platform 303. The lower part of the connecting plate 304 is installed with the slider 307 via the push rod 306. The slider 307 is square and slides on the base plate 2. The bottom surface of the slider 307 is in contact with the base plate 2, preventing the slider 307 from sliding against the base plate. The slide bar 308 is movably mounted to the slider 307 via a sliding hole, allowing the slider 307 to move freely within the slide bar 308. When the connecting plate 304 moves inward, the spring 305 is compressed, causing the movable rod 301 to extend inward and the vertical rollers 302 to close together, thus making it suitable for situations where the bubble size is reduced. When the connecting plate 304 moves outward, the spring 305 opens, causing the movable rod 301 and the vertical rollers 302 to move in opposite directions, thus making it suitable for situations where the bubble size is increased, improving its applicability.

[0023] like Figure 1 , Figure 2 and Figure 4As shown, the rotating plate 311 is movably mounted on the windproof cover 1, the arc-shaped groove 312 is formed on the rotating plate 311, the push rod 306 is movably mounted in the arc-shaped groove 312, the retaining tooth 313 is fixedly connected to the side of the rotating plate 311, and the gear 315 is movably mounted to the retaining tooth 313. The adjusting assembly 3 also includes an upper limiting plate 309 and a lower limiting plate 310, which are fixedly connected to the windproof cover 1. The rotating plate 311 is movably mounted between the upper limiting plate 309 and the lower limiting plate 310. The adjusting assembly 3 also includes a stepper motor 316 and a side plate 317, which are fixedly connected to the side of the base plate 2. The stepper motor 316 is fixedly connected to the side plate 317, and the gear 315 is fixedly connected to the output shaft of the stepper motor 316. The adjusting assembly 3 also includes a limiting head 314, which limits... There are two heads 314, which are fixedly connected to the side of the rotating plate 311. The locking teeth 313 are movably installed between the heads 314. Several locking teeth 313 are provided on the side of the rotating plate 311 and are installed with the gear 315 through the locking teeth 313. When the gear 315 rotates, the rotating plate 311 rotates on the windproof cover 1. The arc groove 312 on the rotating plate 311 rotates synchronously, so that the arc groove 312 begins to press the push rod 306 inward or outward, so that the push rod 306 moves inward or outward, providing a power source for the connecting plate 304 and the vertical roller 302 to move inward or outward. The stepper motor 316 rotates in both forward and reverse directions, so the rotating plate 311 rotates in both directions. Therefore, only one driving device, the stepper motor 316, is needed, which reduces the number of driving devices and thus reduces costs.

[0024] It should be noted that this utility model is a blown film machine with an adjustable blown film nozzle. The film bubble blown out by the die head of the blown film machine is located inside the windproof cover 1. The windproof cover 1 protects against the impact of lateral airflow, preventing the film bubble from easily deforming. The film bubble is located inside the windproof cover 1, and the vertical roller 302 is in contact with the outer side of the film bubble. As the windproof cover 1 moves upward, the vertical roller 302 moves synchronously. When facing different film bubbles, the stepper motor 316 is started, causing the gear 315 above the stepper motor 316 to rotate. The gear 315 is driven to rotate the rotating plate 311 through the meshing teeth 313. The rotating plate 311 slides between the upper limiting plate 309 and the lower limiting plate 310. When the rotating plate 311 slides, the arc groove 31 2. The synchronous rotation pushes the push rod 306 in the arc groove 312 inward or outward, causing the connecting plate 304 at the upper end of the push rod 306 to move inward or outward. This causes the connecting plate 304 to drive the movable rod 301 to move synchronously. When the movable rod 301 moves inward, the spring 305 is compressed by the connecting plate 304, and the vertical rollers 302 close together, thus facing the reduced size of the bubble. When the movable rod 301 moves outward, the spring 305 returns to its open state, and the vertical rollers 302 spread out, thus facing the increased size of the bubble. This makes the adjustment component 3 easy to use for bubble of different sizes, improving its applicability. The rotation of the rotating plate 311 only requires one driving device, the stepper motor 316 on the side, thus reducing the number of driving devices and lowering costs.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. These are merely preferred embodiments of this utility model, described in detail, but should not be construed as limiting the scope of the utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments, and various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principles and spirit of this utility model. All such changes and improvements fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A blown film machine with adjustable blown film nozzle diameter, comprising a windproof cover (1), wherein a base plate (2) is fixedly connected to the bottom surface of the windproof cover (1), characterized in that: An adjusting assembly (3) is movably installed inside the windproof cover (1). The adjusting assembly (3) includes a movable rod (301), a vertical roller (302), a connecting plate (304), a spring (305), a push rod (306), a rotating plate (311), an arc groove (312), a locking tooth (313), and a gear (315). The movable rod (301) is movably installed on the windproof cover (1). The vertical roller (302) is fixedly connected to one end of the movable rod (301) and located inside the windproof cover (1). The connecting plate (304) is fixedly connected to the movable rod. At the other end of (301), and on the outside of the windproof cover (1), the spring (305) is movably mounted on the movable rod (301), the push rod (306) is fixedly connected to the lower end of the connecting plate (304), the rotating plate (311) is movably mounted on the windproof cover (1), the arc groove (312) is opened on the rotating plate (311), the push rod (306) is movably mounted in the arc groove (312), the locking tooth (313) is fixedly connected to the side of the rotating plate (311), and the gear (315) is movably mounted with the locking tooth (313).

2. The blown film machine with adjustable blown film nozzle diameter according to claim 1, characterized in that: The adjustment assembly (3) also includes a mounting platform (303), which is fixedly connected to the windproof cover (1). The movable rod (301) passes through the mounting platform (303) and the windproof cover (1) in sequence. The spring (305) is located between the connecting plate (304) and the mounting platform (303).

3. A blown film machine with adjustable blown film nozzle diameter according to claim 2, characterized in that: The adjustment assembly (3) also includes a slider (307) and a slide rod (308). One end of the slide rod (308) is fixedly connected to the base plate (2), and the other end of the slide rod (308) is fixedly connected to the windproof cover (1). The slider (307) is fixedly connected to the lower end of the push rod (306), and the slider (307) and the slide rod (308) are movably installed.

4. A blown film machine with adjustable blown film nozzle diameter according to claim 3, characterized in that: The adjustment component (3) also includes an upper limiting plate (309) and a lower limiting plate (310), the upper limiting plate (309) and the lower limiting plate (310) are fixedly connected to the windproof cover (1), and the rotating plate (311) is movably installed between the upper limiting plate (309) and the lower limiting plate (310).

5. A blown film machine with adjustable blown film nozzle diameter according to claim 4, characterized in that: The adjustment assembly (3) also includes a stepper motor (316) and a side plate (317). The side plate (317) is fixedly connected to the side of the base plate (2). The stepper motor (316) is fixedly connected to the side plate (317). The gear (315) is fixedly connected to the output shaft of the stepper motor (316).

6. A blown film machine with adjustable blown film nozzle diameter according to claim 5, characterized in that: The adjustment assembly (3) also includes two limiting heads (314), which are fixedly connected to the side of the rotating plate (311), and the locking teeth (313) are movably installed between the limiting heads (314).

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