Automatic following edge cutting device for film blowing machine

Abstract

The utility model discloses an automatic following edge cutting device for a film blowing machine, which comprises a bottom support and a sliding plate, the top end of the bottom support is provided with two mutually parallel cross beams, and the top end and the bottom end of each cross beam are respectively provided with an upper V-shaped guide rail and a lower V-shaped guide rail; the cutter can slide left and right so as to be suitable for production of films of different specifications, the upper V-shaped guide rail and the lower V-shaped guide rail are arranged and matched with the upper idler wheel and the lower idler wheel, so that the cutter is more stable, swinging is avoided, and the edge cutting precision is improved; the whole cutter generates lateral tension through the weight, the steel wire rope and the pulley, so that the cutter can adaptively slide according to the width of a film bubble, the structure is simple, the maintenance is convenient, the weight can be replaced, and the debugging is convenient; the blowing groove is formed in the cutter support, film bubbles can be separated through airflow, adhesion is avoided, edge cutting is facilitated, the pointing direction of the cutter is opposite to the film advancing direction, and flexible adjustment can be achieved according to the actual film outlet direction of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of machinery, and particularly relates to an automatic following edge cutting device for a film blowing machine. Background Art

[0002] The film blowing machine heats and melts plastic particles, extrudes them into a tubular film bubble through an extruder, and then blows it up with compressed air and forms a film after cooling. The key to this process lies in the stability of the film bubble and the production coherence.

[0003] Edge cutting is a key step in cutting and flattening the tubular film. The edge cutting device is used to cut the tubular film, facilitating subsequent bilateral single-sided winding processing. The cutting stability of its edge directly affects the quality and production efficiency of the film.

[0004] When the traditional edge cutting device cuts the edge of a film with poor surface slipperiness, it is difficult to ensure fast edge cutting, resulting in large debugging losses; when producing at high speed, it is prone to jitter or deviation, affecting the quality; when adjusting the width of the film, manual cooperation with the tool is often required, which is time-consuming and laborious and easily causes waste due to uncut edges, and the position of the tool holder is also relatively high, posing relatively large safety hazards to personnel and equipment during frequent operations.

[0005] Therefore, how to provide an automatic following edge cutting device for a film blowing machine to solve the problems existing in the prior art is of great significance for its application. Content of the Utility Model

[0006] In view of this, the purpose of this application is to provide an automatic following edge cutting device for a film blowing machine to solve the problems that the traditional edge cutting device is difficult to ensure cutting accuracy, resulting in uneven edges; it is prone to jitter or deviation during high-speed production, affecting the quality; and its structure is complex, and maintenance and adjustment are time-consuming.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] An automatic following edge cutting device for a film blowing machine includes a bottom bracket and a sliding plate. Two parallel cross beams are installed at the top of the bottom bracket, and upper V-shaped guide rails and lower V-shaped guide rails are respectively arranged at the top and bottom of the cross beams;

[0009] The sliding plate is in the shape of a character. Upper rollers are rotatably connected to the front and rear sides of both ends of the upper part of the sliding plate, and lower rollers are rotatably connected to the front and rear sides of the lower part of the sliding plate. The upper rollers are rotatably connected to the upper V-shaped guide rails, and the lower rollers are rotatably connected to the lower V-shaped guide rails;

[0010] A tool holder is fixedly connected to the bottom end of the sliding plate, and a tool is fixedly connected to the tool holder.

[0011] Preferably, a gap is provided between the two crossbeams, the sliding plate is located inside the gap, and the tool holder and the tool are located below the crossbeams.

[0012] Preferably, a support rod is fixedly connected to one side of the bottom support, a winding wheel is installed at the end of the support rod, a steel wire rope is fixedly connected to one side of the upper part of the sliding plate, and one end of the steel wire rope passes around the winding wheel and is fixedly connected to a weight.

[0013] Preferably, both the tool holder and the tool are U-shaped. The tool holder has an air blowing groove inside, with the bottom of the air blowing groove being an air outlet and the top of the air blowing groove being an air inlet. The air inlet of the air blowing groove is connected to an air source via a flexible hose.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model adopts a cutter that can slide left and right, thus making it suitable for the production of films of different specifications. By setting two upper and lower V-shaped guide rails and matching two sets of upper and lower rollers, the cutter is more stable, avoiding swaying and thus improving the edge cutting accuracy.

[0016] 2. This utility model uses weights, wire ropes and pulleys to generate lateral tension in the entire cutter, allowing the cutter to slide adaptively according to the width of the membrane bubble. The structure is simple, maintenance is convenient, the weights are replaceable, and adjustment is convenient.

[0017] 3. The tool holder in this utility model is provided with an air blowing groove, which can separate the membrane bubble by airflow, avoid sticking, and facilitate edge cutting.

[0018] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings.

[0019] The above and other objects, advantages and features of this application will become more apparent to those skilled in the art from the following detailed description of specific embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application 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 some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a side view of the present invention;

[0023] Figure 3 This is a structural diagram of the tool holder in this utility model.

[0024] In the diagram: 1. Bottom support; 2. Crossbeam; 3. Upper V-shaped guide rail; 4. Lower V-shaped guide rail; 5. Tool holder; 6. Tool; 7. Lower roller; 8. Weight; 9. Winding wheel; 10. Support rod; 11. Wire rope; 12. Sliding plate; 13. Upper roller; 14. Air blowing channel. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. In the following description, specific details such as specific configurations and components are provided merely to help fully understand the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, for clarity and brevity, descriptions of known functions and structures are omitted in the embodiments.

[0026] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0027] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0028] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0029] Please see Figure 1-3 The present invention provides a technical solution for an automatic following edge trimming device for a blown film machine: including a bottom support 1 and a sliding plate 12, the top of the bottom support 1 is equipped with two parallel crossbeams 2, and the top and bottom of the crossbeams 2 are respectively provided with an upper V-shaped guide rail 3 and a lower V-shaped guide rail 4.

[0030] The sliding plate 12 is T-shaped. Upper rollers 13 are rotatably connected to the front and rear sides of the upper two ends of the sliding plate 12, and lower rollers 7 are rotatably connected to the front and rear sides of the lower part of the sliding plate 12. The upper rollers 13 are rotatably connected to the upper V-shaped guide rail 3, and the lower rollers 7 are rotatably connected to the lower V-shaped guide rail 4.

[0031] Because the upper roller 13 is rotatably connected to the upper V-shaped guide rail 3 and the lower roller 7 is rotatably connected to the lower V-shaped guide rail 4, the sliding plate 12 will not slide back and forth, but can only slide left and right, thus avoiding vibration that could cause uneven cutting edges.

[0032] The bottom end of the sliding plate 12 is fixedly connected to a tool holder 5, and the tool holder 5 is fixedly connected to a tool 6. The tool 6 can be replaced. The tool 6 is shaped like a "7" and consists of two utility knife blades with two cutting edges. It can be used to cut the edge of the membrane bubble whether it moves upward or laterally.

[0033] A gap is provided between the two crossbeams 2, the sliding plate 12 is located inside the gap, and the tool holder 5 and the tool 6 are located below the crossbeams 2.

[0034] A support rod 10 is fixedly connected to one side of the bottom support 1. A winding wheel 9 is installed at the end of the support rod 10. A steel wire rope 11 is fixedly connected to one side of the upper part of the sliding plate 12. One end of the steel wire rope 11 passes around the winding wheel 9 and is fixedly connected to a weight 8. By setting the weight 8, the steel wire rope 11 and the winding wheel 9, the sliding plate 12 generates a pulling force to the right. When the cutter 6 is cutting the edge, the cutter 6 can always be in contact with the membrane bubble, and there is no need to manually adjust the position of the cutter 6.

[0035] Both the tool holder 5 and the tool 6 are shaped like the number "7". The tool holder 5 has an air blowing groove 14 inside. The bottom of the air blowing groove 14 is the air outlet, and the top of the air blowing groove 14 is the air inlet. The air inlet of the air blowing groove 14 is connected to the air source through a hose. Air can be blown into the membrane bubble through the air blowing groove 14 to facilitate membrane bubble stratification.

[0036] In practical use, the membrane bubble moves upward. At this time, the cutter 6 is inserted into the side of the membrane bubble that needs to be cut. By setting the weight 8, the wire rope 11 and the winding wheel 9, the sliding plate 12 generates a pulling force to the right. When the cutter 6 is cutting the edge, the cutter 6 can always be in contact with the membrane bubble. There is no need to manually adjust the position of the cutter 6. The membrane bubble is cut as it moves. At the same time, air can be blown into the membrane bubble through the air blowing groove 14 to facilitate the stratification of the membrane bubble.

[0037] The above description is merely a preferred embodiment of this utility model and does not limit the scope of protection of this utility model. For those skilled in the art, this utility model can have various modifications and variations. Any changes, modifications, substitutions, integrations, and parameter alterations made to these embodiments within the spirit and principles of this utility model, through conventional substitutions or methods that achieve the same function without departing from the principles and spirit of this utility model, fall within the scope of protection of this utility model.

Claims

1. An automatic followability edge slitting device for a film blowing machine, characterized by: Including bottom support (1) and sliding plate (12), the top end of the bottom support (1) is provided with two parallel cross beams (2), the top end and bottom end of the cross beam (2) are provided with upper V-shaped guide rail (3) and lower V-shaped guide rail (4) respectively; The shape of the sliding plate (12) is T-shaped, the front and rear sides of the upper two ends of the sliding plate (12) are rotatably connected with upper rollers (13), the front and rear sides of the lower part of the sliding plate (12) are rotatably connected with lower rollers (7), the upper rollers (13) are rotatably connected with the upper V-shaped guide rail (3), and the lower rollers (7) are rotatably connected with the lower V-shaped guide rail (4); The bottom end of the sliding plate (12) is fixedly connected with a tool holder (5), and the tool holder (5) is fixedly connected with a tool (6).

2. An automatic following edge slitting device for a film blowing machine as claimed in claim 1, characterized in that: The gap is arranged between the two cross beams (2), the sliding plate (12) is located in the gap, and the tool holder (5) and the tool (6) are located below the cross beam (2).

3. An automatic following edge slitting device for a film blowing machine as claimed in claim 2, characterized in that: One side of the bottom support (1) is fixedly connected with a supporting rod (10), the end of the supporting rod (10) is provided with a winding wheel (9), one side of the upper part of the sliding plate (12) is fixedly connected with a steel wire rope (11), one end of the steel wire rope (11) is wound around the winding wheel (9) and fixedly connected with a weight (8).

4. An automatic following edge slitting device for a film blowing machine as claimed in claim 3, characterized in that: The shape of the tool holder (5) and the tool (6) is "7" shaped, the inside of the tool holder (5) is provided with a blowing groove (14), the bottom end of the blowing groove (14) is an air outlet, the top end of the blowing groove (14) is an air inlet, and the air inlet of the blowing groove (14) is connected with the gas source through a hose.

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