Film blowing limiting device

Abstract

The utility model belongs to the technical field of film blowing machines, particularly relates to a film blowing limiting device, and aims to solve the problems that a film blowing limiting structure on a film blowing machine needs to be adjusted by adjusting handles of a rotating rod one by one, so that the angle of a limiting barrier strip is adjusted, and the whole limiting structure is relatively complicated to adjust and inconvenient to use. Four rotating rods are rotatably mounted in the base frame in an annular array mode, two mounting pieces are fixedly arranged on each rotating rod, barrier strips for limiting are arranged on one sides of the mounting pieces, the multiple barrier strips are arranged in a staggered mode, the mounting assemblies are arranged on the mounting pieces and used for detachably mounting the barrier strips so as to adjust the inclination angles of the barrier strips in the vertical direction, and the adjusting assemblies are arranged on the base frame and used for adjusting the inclination angles of the barrier strips in the vertical direction. The device is used for simultaneously adjusting the rotating angles of the four rotating rods so as to quickly finish the adjustment of the limiting range. When in use, the limiting device has the advantages of simple structure, convenience in adjustment, good stability and the like, and can be used for quickly limiting and adjusting the film blowing equipment and improving the production efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to a film blowing limiting device. Background Art

[0002] The film blowing limiter is a device used to control the size and shape of the film during the film blowing production process. Film blowing is a common method of producing plastic films, in which plastic particles are heated and melted and then extruded through a die to form a cylindrical film, which is then inflated by air and cooled to shape. In this process, the limiter plays a vital role.

[0003] At present, the adjustment of the film blowing limit structure on the film blowing machine requires adjusting the handles of the rotating rod one by one, so as to adjust the angle of the limit stop bar, which makes the adjustment of the overall limit structure more complicated and inconvenient to use.

[0004] In view of the above problems, the utility model document proposes a film blowing limiting device. Utility Model Content

[0005] The utility model provides a film blowing limit device, which solves the disadvantages in the prior art that the adjustment of the film blowing limit structure on the film blowing machine requires adjusting the handles of the rotating rods one by one to adjust the angle of the limit stop strip, resulting in cumbersome adjustment of the overall limit structure and inconvenient use.

[0006] The utility model provides the following technical solutions:

[0007] Film blowing limiting device, including:

[0008] A base frame, wherein four rotating rods are rotatably mounted in a circular array in the base frame, two mounting plates are fixedly mounted on the rotating rods, a stop bar for limiting position is disposed on one side of the mounting plate, and a plurality of the stop bars are staggered;

[0009] An installation assembly is arranged on the installation sheet and is used for detachably installing the baffle bar so as to adjust the inclination angle of the baffle bar in the vertical direction;

[0010] The adjustment component is arranged on the base frame and is used to adjust the rotation angles of the four rotating rods at the same time, so as to quickly complete the adjustment of the limit range.

[0011] In a possible design, the mounting assembly includes a bolt fixedly arranged on one side of the baffle, the mounting plate is provided with a through hole through which the bolt passes, and the mounting plate and the bolt are fixed by corresponding nuts.

[0012] In one possible design, the adjustment assembly includes a mounting ring fixed to the bottom of the base frame by a plurality of fixing rods, a gear ring is slidably mounted on the inner wall of the mounting ring, the bottom end of the rotating rod passes through the bottom of the base frame and is fixedly provided with a gear, and the four gears are all engaged with the gear ring.

[0013] In one possible design, an L-shaped mounting frame is fixedly provided at the bottom of the mounting ring, and a driving motor for driving one of the gears to rotate is fixedly installed at the bottom of the L-shaped mounting frame, and the output shaft of the driving motor passes through the inner wall of the L-shaped mounting frame and is fixedly connected to the bottom center of the corresponding gear.

[0014] In a possible design, a protective washer for increasing friction is provided between the nut and the corresponding mounting plate.

[0015] In a possible design, the protective gasket is made of fluororubber.

[0016] In a possible design, the baffle is hollow to reduce its own weight.

[0017] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0018] In the present application, when in use, bolts are used to pass through the through holes of the baffle and the mounting plate, and are fixed with nuts. By adjusting the position of the nut on the bolt, the inclination angle of the baffle in the vertical direction can be changed to adapt to different limiting requirements. The staggered arrangement of multiple baffles forms a certain space to achieve effective limiting of the blown film.

[0019] When the limit range needs to be adjusted, the drive motor is started, and its output shaft drives a gear to rotate. Since the four gears are engaged with the gear ring, when one of the gears rotates, the other three gears will also rotate at the same time, thereby driving the four rotating rods to adjust the angle synchronously. By adjusting the angle of the rotating rod, the space size between multiple baffles can be changed, thereby quickly completing the adjustment of the limit range.

[0020] The utility model has the following beneficial effects:

[0021] Quick adjustment: Through the design of the adjustment component, the four rotating rods can be adjusted simultaneously, so as to quickly change the space size between multiple baffles to meet different film blowing limit requirements;

[0022] Wide adaptability: The retaining bar is detachably installed, and its inclination angle can be changed by adjusting the position of the bolt in the vertical direction, so that the film blowing limit device can adapt to film blowing equipment of different shapes and sizes;

[0023] Easy to operate: The whole device has a simple and clear structure and is easy to operate. The installation, adjustment and replacement of the baffle can be completed without complicated tools or equipment;

[0024] Reduce weight: The baffle adopts a hollow design, which effectively reduces its own weight and reduces the manufacturing and transportation costs of the entire device;

[0025] The film blowing limiting device provided by the utility model has the advantages of simple structure, convenient adjustment, good stability, etc., and can realize rapid limiting adjustment of the film blowing equipment, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the three-dimensional structure of the film blowing limiting device provided in an embodiment of the utility model;

[0027] Figure 2 A schematic structural diagram of another viewing angle of the film blowing limiting device provided in an embodiment of the utility model;

[0028] Figure 3 A schematic diagram of the disassembled structure of the mounting plate and the baffle bar of the film blowing limiting device provided in an embodiment of the utility model;

[0029] Figure 4 A schematic diagram of the structure of an adjusting component of a film blowing limiting device provided in an embodiment of the utility model.

[0030] Figure numerals: 1. base frame; 2. rotating rod; 3. mounting plate; 4. baffle; 5. bolt; 6. nut; 7. protective washer; 8. mounting ring; 9. fixing rod; 10. gear ring; 11. gear; 12. L-shaped mounting frame; 13. driving motor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0034] Embodiment 1

[0035] Please refer to Figure 1-4 The film blowing limiting device is used in the field of film blowing machines and mainly includes a base frame 1, a rotating rod 2, a mounting plate 3, a stop bar 4, a mounting assembly and an adjusting assembly;

[0036] The base frame 1 is the basic structure of the whole device, and four rotating rods 2 are rotatably installed in a circular array inside the base frame 1. Two mounting plates 3 are fixedly arranged on each rotating rod 2. A stop bar 4 for limiting is arranged on one side of the mounting plate 3. The multiple stop bars 4 are staggered to form a limiting space for the film blowing equipment.

[0037] The mounting assembly is used for detachably mounting the retaining bar 4 so as to adjust the inclination angle of the retaining bar 4 in the vertical direction. In this embodiment, the mounting assembly includes a bolt 5 fixedly arranged on one side of the retaining bar 4. The mounting plate 3 is provided with a through hole matching the bolt 5. The retaining bar 4 can be installed on the mounting plate 3 by passing the bolt 5 through the through hole of the mounting plate 3 and being fixed with a corresponding nut 6. The inclination angle of the retaining bar 4 in the vertical direction can be adjusted by loosening the nut 6, and then the nut 6 can be tightened again.

[0038] The adjustment component is used to adjust the rotation angle of the four rotating rods 2 at the same time, so as to quickly complete the adjustment of the limit range. In this embodiment, the adjustment component includes a mounting ring 8 fixedly arranged at the bottom of the base frame 1 through a plurality of fixing rods 9, and a gear ring 10 is slidably installed on the inner wall of the mounting ring 8. The bottom end of the rotating rod 2 passes through the bottom of the base frame 1 and is fixedly provided with a gear 11. The four gears 11 are all meshed with the gear ring 10. When the gear ring 10 rotates, the four gears 11 rotate at the same time, thereby driving the rotating rod 2 to rotate, so as to achieve the adjustment of the limit range.

[0039] In order to facilitate the driving of the gear ring 10 to rotate, an L-shaped mounting frame 12 is fixedly provided at the bottom of the mounting ring 8, and a driving motor 13 for driving one of the gears 11 to rotate is fixedly installed at the bottom of the L-shaped mounting frame 12. The output shaft of the driving motor 13 passes through the inner wall of the L-shaped mounting frame 12 and is fixedly connected to the bottom center of the corresponding gear 11. When the driving motor 13 is working, its output shaft drives the corresponding gear 11 to rotate, and then drives the other three gears 11 to rotate at the same time through the meshing action of the gear ring 10, thereby realizing the simultaneous adjustment of the four rotating rods 2.

[0040] Embodiment 2

[0041] Improvements based on Example 1:

[0042] Please refer to Figure 3 In order to increase the friction between the nut 6 and the corresponding mounting plate 3 and prevent loosening, a protective washer 7 is provided between the nut 6 and the corresponding mounting plate 3. The protective washer 7 is made of fluororubber, has good elasticity and wear resistance, can effectively increase the friction and improve the stability of the connection;

[0043] In order to reduce the weight of the baffle bar 4, the baffle bar 4 is hollow, which can not only reduce the weight of the entire device but also reduce the manufacturing cost.

[0044] However, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 13 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any selection according to their needs or convenience.

[0045] The above are only specific implementations of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model; in the absence of conflicts, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. Film blowing limiting device, characterized in that: include: A base frame (1), wherein four rotating rods (2) are rotatably mounted in a circular array in the base frame (1), two mounting plates (3) are fixedly mounted on the rotating rods (2), a stop bar (4) for limiting position is disposed on one side of the mounting plate (3), and a plurality of the stop bars (4) are arranged in a staggered manner; A mounting assembly, arranged on the mounting plate (3), used for detachably mounting the retaining bar (4) so ​​as to adjust the inclination angle of the retaining bar (4) in the vertical direction; The adjustment component is arranged on the base frame (1) and is used to adjust the rotation angles of the four rotating rods (2) at the same time, thereby quickly completing the adjustment of the limit range.

2. The film blowing limiting device according to claim 1, characterized in that: The mounting assembly comprises a bolt (5) fixedly arranged on one side of the retaining bar (4); the mounting plate (3) is provided with a through hole through which the bolt (5) passes; the mounting plate (3) and the bolt (5) are fixed by means of a corresponding nut (6).

3. The film blowing limiting device according to claim 1, characterized in that: The adjustment assembly comprises a mounting ring (8) fixedly arranged at the bottom of a base frame (1) via a plurality of fixing rods (9); a gear ring (10) is slidably mounted on the inner wall of the mounting ring (8); the bottom end of the rotating rod (2) passes through the bottom of the base frame (1) and is fixedly arranged with a gear (11); and the four gears (11) are all meshed with the gear ring (10).

4. The film blowing limiting device according to claim 3, characterized in that: An L-shaped mounting frame (12) is fixedly arranged at the bottom of the mounting ring (8), and a driving motor (13) for driving one of the gears (11) to rotate is fixedly installed at the bottom of the L-shaped mounting frame (12), wherein the output shaft of the driving motor (13) passes through the inner wall of the L-shaped mounting frame (12) and is fixedly connected to the bottom center of the corresponding gear (11).

5. The film blowing limiting device according to claim 2, characterized in that: A protective washer (7) for increasing friction is provided between the nut (6) and the corresponding mounting plate (3).

6. The film blowing limiting device according to claim 5, characterized in that: The protective gasket (7) is made of fluororubber.

7. The film blowing limiting device according to claim 1, characterized in that: The baffle bar (4) is hollow so as to reduce its own weight.

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