Quick transverse cutting device for PE film production

Abstract

The utility model relates to the technical field of film production, and discloses a quick transverse cutting device for PE film production, which comprises a film production device, a supporting column is fixed on the surface of the film production device, an electric push rod is fixed on the surface of the supporting column, and a lifting block is fixed on an output shaft of the electric push rod. A cutting knife used for cutting a PE film is arranged on the surface of the lifting block, and a plurality of pressing mechanisms are arranged on the surface of the lifting block. When the film production device is matched with the cutting knife to transversely cut the film, the film can be pressed before the cutting knife is in contact with the film under the action of the pressing mechanism, so that the effect of limiting the position of the film is achieved, and the transverse cutting effect of the cutting knife on the film is improved; the bottom of the film is blown, so that the film is separated from the surface of the film production device, and the film is prevented from adhering to the surface of the film production device due to transverse cutting.

Description

Technical Field

[0001] This utility model relates to the field of film production technology, specifically a rapid cross-cutting device for PE film production. Background Technology

[0002] PE film, or polyethylene film, is a film produced from PE granules. It is moisture-proof and has low moisture permeability. Depending on the manufacturing method and control measures, products of different densities can be produced. PE film production equipment consists of machines or devices used to produce PE film, including extruders, coating machines, cooling and curing devices, and cutting and packaging equipment, which can efficiently produce PE films of various types, specifications, and properties.

[0003] In the film winding process, the cross-cutting operation is crucial. However, some current film cross-cutting devices lack effective film fixation during operation, making the film prone to displacement during the cross-cutting process and affecting the cutting accuracy. In addition, some films stick to the worktable after cross-cutting, which can easily deform the film during subsequent pulling, thus affecting the final forming quality of the film. Utility Model Content

[0004] The purpose of this invention is to provide a rapid cross-cutting device for PE film production, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid cross-cutting device for PE film production, comprising a film production device, a support column fixed to the surface of the film production device, an electric push rod fixed to the surface of the support column, a lifting block fixed to the output shaft of the electric push rod, a cutting blade for cutting PE film provided on the surface of the lifting block, a plurality of pressing mechanisms provided on the surface of the lifting block, and an air blowing mechanism for blowing the film provided on the surface of the lifting block.

[0006] Preferably, the pressing mechanism includes several tubes fixed to the surface of the lifting block, with springs fixed inside the tubes, a connecting rod fixed to the other end of the springs, and a pressing plate fixed to the other end of the connecting rods.

[0007] Preferably, the surface of the connecting rod has a plurality of limiting rods arranged in a ring, and the inner cavity of the tube body has an engagement groove, and the limiting rod slides on the surface of the engagement groove.

[0008] Preferably, both sides of the surface of the pressing plate are rounded.

[0009] Preferably, the blowing mechanism includes air bladders fixed to both sides of the surface of the lifting block and several air outlets opened on the surface of the film production device. The other end of the air bladder is fixed to the surface of the support column. The surfaces of the two air bladders are connected to a connecting air pipe. The other end of the connecting air pipe is connected to an air supply pipe. The air supply pipe is connected to the air outlets. The surface of the air supply pipe is connected to an air inlet pipe. A one-way valve is provided on the surface of the air inlet pipe. The one-way valve is also provided on the surface of the air supply pipe.

[0010] Preferably, sliders are provided on both sides of the surface of the lifting block, and grooves are provided on both sides of the surface of the support column.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] When a film production device is used with a cutting blade to perform transverse cutting of a film, this utility model can press the cutting blade against the film before it contacts the film under the action of a pressing mechanism, thereby limiting the position of the film and improving the transverse cutting effect of the cutting blade. In addition, air can be blown onto the bottom of the film under the action of an air blowing mechanism, thereby causing the film to detach from the surface of the film production device and preventing the film from sticking to the surface of the film production device due to transverse cutting. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of the thin film production device after it has been cut open in this utility model;

[0015] Figure 3 This is a partial three-dimensional structural diagram of the present invention;

[0016] Figure 4 This is a partial three-dimensional structural diagram of the present invention.

[0017] In the diagram: 1. Film production device; 2. Support column; 3. Electric push rod; 4. Lifting block; 5. Cutting knife; 6. Pressing mechanism; 61. Tube body; 62. Spring; 63. Connecting rod; 64. Pressing plate; 7. Engaging groove; 8. Limiting rod; 9. Air blowing mechanism; 91. Airbag; 92. Connecting air pipe; 93. Air supply pipe; 94. Air inlet pipe; 95. One-way valve; 96. Air outlet. Detailed Implementation

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Please see Figure 1-4 As shown, a rapid transverse cutting device for PE film production includes a film production device 1. A support column 2 is fixed to the surface of the film production device 1, an electric push rod 3 is fixed to the surface of the support column 2, a lifting block 4 is fixed to the output shaft of the electric push rod 3, a cutting blade 5 for cutting PE film is provided on the surface of the lifting block 4, several pressing mechanisms 6 are provided on the surface of the lifting block 4, and an air blowing mechanism 9 for blowing the film is provided on the surface of the lifting block 4. When the film production device 1 and the cutting blade 5 are used to transversely cut the film, the pressing mechanism 6 can press the cutting blade 5 before it contacts the film, thereby limiting the position of the film and improving the transverse cutting effect of the cutting blade 5. In addition, the air blowing mechanism 9 can blow air onto the bottom of the film, thereby causing the film to detach from the surface of the film production device 1 and preventing the film from sticking to the surface of the film production device 1 due to transverse cutting.

[0020] The pressing mechanism 6 includes several tubes 61 fixed to the surface of the lifting block 4. A spring 62 is fixed inside the tube 61, and a connecting rod 63 is fixed to the other end of the spring 62. A pressing plate 64 is fixed to the other end of the connecting rod 63. In this embodiment, through the arrangement of the tubes 61, springs 62, connecting rods 63 and pressing plate 64, the connecting rods 63 can drive the pressing plate 64 to move under the action of the tubes 61. Under the action of the springs 62, the movement of the connecting rods 63 and pressing plate 64 can be buffered.

[0021] The surface of the connecting rod 63 has a ring array of several limiting rods 8, and the inner cavity of the tube body 61 is provided with a meshing groove 7. The limiting rods 8 slide on the surface of the meshing groove 7. In this embodiment, the meshing groove 7 and the limiting rods 8 are provided to limit the lifting and lowering of the connecting rod 63, thereby improving the stability of the connecting rod 63 when it is lifted and lowered.

[0022] Both sides of the surface of the pressing plate 64 are rounded. In this embodiment, this design reduces the damage to the film during pressing by the edges and corners of the pressing plate 64, and improves the practicality of the device.

[0023] The air blowing mechanism 9 includes air bladders 91 fixed to both sides of the surface of the lifting block 4 and several air outlets 96 formed on the surface of the film production device 1. The other end of the air bladders 91 is fixed to the surface of the support column 2. The surfaces of the two air bladders 91 are connected to a connecting air pipe 92. The other end of the connecting air pipe 92 is connected to an air supply pipe 93. The air supply pipe 93 is connected to the air outlets 96. The surface of the air supply pipe 93 is connected to an air inlet pipe 94. A one-way valve 95 is provided on the surface of the air inlet pipe 94. The one-way valve 95 is also provided on the surface of the air supply pipe 93. In this embodiment, by setting up the airbag 91, connecting air pipe 92, air supply pipe 93, air inlet pipe 94, one-way valve 95 and air outlet 96, when the electric push rod 3 drives the lifting block 4 to move, the airbag 91 fixed on the surface of the lifting block 4 can change shape. Then, under the action of the air supply pipe 93 and the air inlet pipe 94, favorable conditions are provided for the deformation of the airbag 91. In addition, under the action of the one-way valve 95, air can reach the air outlet 96 through the connecting air pipe 92 and the air supply pipe 93, thereby causing air to be released from the air outlet 96.

[0024] Slider blocks are provided on both sides of the surface of the lifting block 4, and grooves are provided on both sides of the surface of the support column 2. In this embodiment, this arrangement improves the stability of the lifting block 4 when it is raised or lowered.

[0025] Working Principle: During film production, the film can be conveyed via rollers. The working principle can be referenced in the "Rapid Cross-Sectional Device for PE Film Production" application number CN202021684579.5. When the film needs to be cut, the operator uses an electric push rod 3. Driven by the electric push rod 3, the lifting block 4 moves the cutting blade 5 towards the film. The cutting blade 5 then cuts the film. Before the cutting blade 5 contacts the film, the pressing plate 64 first contacts the film, and under the constraint of the tube 61, spring 62, and connecting rod 63... The pressure plate 64 is buffered to improve its practicality in pressing the film. In addition, after the cutting blade 5 cuts the film, when the lifting block 4 drives the cutting blade 5 to rise, the lifting block 4 can squeeze the air bag 91. The air in the air bag 91 can be transported to the air outlet 96 through the connecting air pipe 92 and the air supply pipe 93. The air can then blow the film to prevent the film from sticking to the surface of the film production device 1 due to the cutting force, which facilitates subsequent pulling. It is worth noting that the blowing force generated by the blowing mechanism 9 is relatively small, and the film will not be blown away due to the limitation of the roller.

[0026] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid cross-cutting device for PE film production, comprising a film production apparatus (1), characterized in that: The surface of the film production device (1) is fixed with a support column (2), the surface of the support column (2) is fixed with an electric push rod (3), the output shaft of the electric push rod (3) is fixed with a lifting block (4), the surface of the lifting block (4) is provided with a cutting blade (5) for cutting PE film, the surface of the lifting block (4) is provided with a plurality of pressing mechanisms (6), and the surface of the lifting block (4) is provided with an air blowing mechanism (9) for blowing film.

2. The rapid cross-cutting device for PE film production according to claim 1, characterized in that: The pressing mechanism (6) includes several tubes (61) fixed to the surface of the lifting block (4). A spring (62) is fixed in the inner cavity of the tube (61). A connecting rod (63) is fixed at the other end of the spring (62). A pressing plate (64) is fixed at the other end of the connecting rod (63).

3. The rapid cutting device for PE film production according to claim 2, characterized in that: The surface of the connecting rod (63) has a ring array of several limiting rods (8), and the inner cavity of the tube body (61) is provided with a meshing groove (7). The limiting rods (8) slide on the surface of the meshing groove (7).

4. The rapid cutting device for PE film production according to claim 2, characterized in that: Both sides of the surface of the pressing plate (64) are rounded.

5. The rapid cross-cutting device for PE film production according to claim 1, characterized in that: The blowing mechanism (9) includes airbags (91) fixed on both sides of the surface of the lifting block (4) and several air outlets (96) opened on the surface of the film production device (1). The other end of the airbag (91) is fixed to the surface of the support column (2). The surfaces of the two airbags (91) are connected to a connecting air pipe (92). The other end of the connecting air pipe (92) is connected to an air supply pipe (93). The air supply pipe (93) is connected to the air outlet (96). The surface of the air supply pipe (93) is connected to an air inlet pipe (94). The surface of the air inlet pipe (94) is provided with a one-way valve (95). The one-way valve (95) is also provided on the surface of the air supply pipe (93).

6. The rapid cross-cutting device for PE film production according to claim 1, characterized in that: The lifting block (4) has sliders on both sides of its surface, and the support column (2) has grooves on both sides of its surface.

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