Film cutting device for PET reflecting film production

Abstract

The utility model relates to the technical field of film cutting devices, and discloses a PET reflecting film production film cutting device which comprises a device frame, a film roller and a film cutting mechanism. The telescopic end of the electric cylinder drives the device plate, the bottom pressing plate and the film cutting mechanism to get close to the PET reflecting film on the partition plate, the pressing plate is matched with the telescopic end of the air spring rod to flatten, press and position the film cutting portion in advance, and the electric telescopic rod of the film cutting mechanism at the bottom of the device plate can lift the cutter. According to the film cutting device, a film cutting part of a reflecting film which is pressed and positioned can be cut, so that the reflecting film wound outside a film roller can be tightly connected with a film cutting groove of a partition plate, the film cutting part is smoother in film cutting, and in the film cutting process, an air pump can perform negative pressure on a cavity at an adsorption hole, so that the film cutting part can be adsorbed and positioned at the partition plate; in this way, the cut film can be positioned and prevented from being attached to the film cutting mechanism, and follow-up film cutting machining is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of film cutting devices, in particular to a film cutting device for producing PET reflective films. Background Technique

[0002] A PET reflective film is a film used to improve the brightness of liquid crystal displays (LCDs). It reflects light back to the liquid crystal layer, thereby improving the display effect. The process of producing a PET reflective film includes multiple steps, one of which is film cutting. Film cutting is the process of cutting the raw material of the PET reflective film into specific sizes and shapes.

[0003] As disclosed in the authorized publication number CN203282048U of a Chinese patent, a laser cutting PET film cutting machine includes a laser, a gantry arm, a working arm, and a frame. The laser is fixed on the frame. The gantry arm is installed on the frame through a Y-axis guide rail. The gantry arm is driven by a Y-axis motor to move on the Y-axis guide rail. The working arm is installed on the gantry arm through an X-axis guide rail. The working arm is driven by an X-axis motor to move on the X-axis guide rail. A first mirror group is installed at the output end of the laser. A second mirror group is installed on the gantry arm. A third mirror group is installed on the working arm. The output end of the third mirror group faces the cutting platform of the frame. The first mirror group transmits the laser emitted by the laser to the third mirror group through the second mirror group;

[0004] The prior art has the advantages of high stability, good accuracy, and convenient operation, and is suitable for improving the existing PET film cutting process;

[0005] However, when a rolled reflective film is cut by winding and unwinding through a film roller, there is a gap between the reflective film and the film cutting table. During film cutting, there is no pressing and positioning at the cutting position of the reflective film, resulting in wrinkles and uneven cutting at the cutting position. Moreover, the cut reflective film is easily adhered to the film cutting mechanism, affecting subsequent film cutting processing. Content of the Utility Model

[0006] The purpose of the utility model is to provide a film cutting device for producing PET reflective films. This kind of film cutting device for producing reflective films can realize pressing and positioning of the film cutting part of the rolled reflective film, making the film cutting part cut smoothly. Moreover, after film cutting, it can position the cut film to prevent it from adhering to the film cutting mechanism and affecting subsequent film cutting processing.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PET reflective film production and film cutting device, comprising a device frame, a film roller, and a film cutting mechanism, a partition is fixedly installed in the middle of the device frame, a gantry is installed on the top of the device frame, the film roller is installed on a bracket on one side of the device frame, an electric cylinder is fixedly installed on the top of the gantry, the telescopic end of the electric cylinder is fixedly connected to a device plate, a pressing plate and a film cutting mechanism are respectively arranged at the bottom of the device plate, the film cutting mechanism includes a cutter and an electric telescopic rod, gas spring rods are respectively fixedly installed at both ends of the bottom of the device plate, the telescopic end of the gas spring rod is fixedly connected to the end of the pressing plate, a give way groove is opened on the top of the pressing plate, an air pump is fixedly installed at the bottom of the device frame, and an adsorption hole is opened in the middle of the partition.

[0008] Preferably, slides are installed on both sides of the top of the device frame, and the bottom end of the gantry is installed on sliding blocks matching the slides.

[0009] Preferably, one side of the reflective film wrapped around the outside of the film roller extends through the bottom of the guide roller to below the film cutting mechanism.

[0010] Preferably, the size of the clearance groove matches the size of the cutter in the film cutting mechanism.

[0011] Preferably, the gas spring rod is a telescopic rod structure, and a return spring is provided between the fixed end and the telescopic end inside the gas spring rod.

[0012] Preferably, a cavity structure is formed between the partition and the inner wall of the device frame, the air pump is connected to the cavity via a connecting pipe, and the adsorption hole is located directly below the give way groove.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model drives the device plate, the bottom pressure plate and the film cutting mechanism to approach the PET reflective film on the partition through the telescopic end of the electric cylinder. The pressure plate, in cooperation with the telescopic end of the gas spring rod, pre-flattens and presses the film cutting part to position it. The electric telescopic rod of the film cutting mechanism at the bottom of the device plate can raise and lower the cutter, and can cut the film cutting part of the pressed and positioned reflective film. In this way, it can be ensured that the reflective film circled around the outside of the film roller can be closely connected with the film cutting groove of the partition, so that the film cutting part is smoother. During the film cutting process, the air pump can apply negative pressure to the cavity at the adsorption hole, so that the film cutting part can be adsorbed and positioned on the partition. In this way, the cut film can be positioned to prevent it from adhering to the film cutting mechanism and affecting the subsequent film cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2This is a schematic side-sectional structure diagram of the present utility model;

[0017] Figure 3 is Figure 2 a schematic side structure diagram;

[0018] Figure 4 is Figure 3 a partially enlarged structure diagram at position A in the middle.

[0019] In the figure: 1, device frame; 2, gantry; 3, film roller; 4, electric cylinder; 5, pressing plate; 6, film cutting mechanism; 7, gas spring rod; 8, air pump; 11, sliding table; 12, partition; 31, guide roller; 41, device plate; 51, relief groove; 81, adsorption hole. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: a PET reflective film production film cutting device, including a device frame 1, a film roller 3, and a film cutting mechanism 6. A partition 12 is fixedly installed in the middle of the device frame 1, a gantry 2 is installed on the top of the device frame 1, the film roller 3 is installed on one side bracket of the device frame 1, an electric cylinder 4 is fixedly installed on the top of the gantry 2, and a device plate 41 is fixedly connected to the telescopic end of the electric cylinder 4. A pressing plate 5 and a film cutting mechanism 6 are respectively arranged at the bottom of the device plate 41;

[0022] The film cutting mechanism 6 includes a cutting knife and an electric telescopic rod. Gas spring rods 7 are respectively fixedly installed at both ends of the bottom of the device plate 41. The telescopic end of the gas spring rod 7 is fixedly connected to the end of the pressing plate 5. A relief groove 51 is opened at the top of the pressing plate 5. An air pump 8 is fixedly installed at the bottom of the device frame 1, and an adsorption hole 81 is opened in the middle of the partition 12;

[0023] The gas spring rod 7 is a telescopic rod structure, and the fixed end and the telescopic end in the telescopic rod are driven by a spring. The gas spring rod 7 is a prior art structure and will not be elaborated here;

[0024] One side of the reflective film wound around the outside of the film roller 3 is extended to the bottom of the guide roller 31 and then to the lower part of the film cutting mechanism 6 through winding, and then extends to the opening on the other side of the device frame 1. A V-shaped film cutting notch is opened at the position of the partition 12 below the film cutting mechanism 6 to facilitate the cutting knife in the film cutting mechanism 6 to cut the film at the film cutting notch;

[0025] The telescopic end of the electric cylinder 4 drives the device plate 41, the bottom pressure plate 5 and the film cutting mechanism 6 to approach the PET reflective film on the partition 12. The pressure plate 5 cooperates with the telescopic end of the gas spring rod 7 to pre-flatten and press the film cutting part. The electric telescopic rod of the film cutting mechanism 6 at the bottom of the device plate 41 can lift the cutter and cut the film cutting part of the pressed and positioned reflective film. This ensures that the reflective film around the outer circle of the film roller 3 can be closely connected with the film cutting groove of the partition 12, so that the film cutting part is smoother. During the film cutting process, the air pump 8 can apply negative pressure to the cavity at the adsorption hole 81, so that the film cutting part can be adsorbed and positioned at the partition 12. This can position the cut film to prevent it from adhering to the film cutting mechanism 6 and affecting the subsequent film cutting process.

[0026] Among them, slides 11 are installed on both sides of the top of the device frame 1, and the bottom end of the gantry 2 is installed on the matching slider of the slide 11. The gantry 2 can move left and right on the slide 11, so that the film around the outside of the film roller 3 can be cut at multiple positions.

[0027] One side of the reflective film wrapped around the outside of the film roller 3 is connected to the bottom of the guide roller 31 and extends to the bottom of the film cutting mechanism 6.

[0028] Among them, the size of the give way groove 51 matches the size of the cutter in the film cutting mechanism 6, the gas spring rod 7 is a telescopic rod structure, and a return spring is arranged between the fixed end and the telescopic end inside the gas spring rod 7, a cavity structure is formed between the partition 12 and the inner wall of the device frame 1, the air pump 8 is connected to the cavity through a connecting pipe, the adsorption hole 81 is located directly below the give way groove 51, and the device plate 41, the bottom pressure plate 5 and the film cutting mechanism 6 are driven by the telescopic end of the electric cylinder 4 to approach the PET reflective film on the partition 12. With the cooperation of the telescopic end of the gas spring rod 7, the pressure plate 5 pre-flattens and presses the film cutting part, and the electric telescopic rod of the film cutting mechanism 6 at the bottom of the device plate 41 can raise and lower the cutter, so as to cut the film cutting part of the pressed and positioned reflective film.

[0029] Working principle: When in use, firstly, one side of the reflective film wrapped around the outside of the film roller 3 is connected to the bottom of the guide roller 31 and extended to the bottom of the film cutting mechanism 6, and then extended to the opening on the other side of the device frame 1;

[0030] Then, the device plate 41, the bottom pressing plate 5 and the film cutting mechanism 6 are driven by the telescopic end of the electric cylinder 4 to approach the PET reflective film on the partition 12. The pressing plate 5 cooperates with the telescopic end of the gas spring rod 7 to pre-flatten and press the film cutting part.

[0031] The cutter can be raised and lowered by the electric telescopic rod of the film cutting mechanism 6 at the bottom of the device plate 41, and the film cutting part of the pressed and positioned reflective film can be cut, so that the reflective film around the outer circle of the film roller 3 can be closely connected with the film cutting groove of the partition 12, so that the film cutting part can be cut more smoothly;

[0032] Finally, during the film cutting process, the air pump 8 can apply negative pressure to the cavity at the adsorption hole 81, so as to adsorb and position the film cutting part at the partition plate 12, thereby positioning the cut film and preventing it from adhering to the film cutting mechanism 6 and affecting the subsequent film cutting process.

[0033] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PET reflective film production and film cutting device, comprising a device frame (1), a film roller (3), and a film cutting mechanism (6), characterized in that: A partition (12) is fixedly installed in the middle of the device frame (1), a gantry (2) is installed on the top of the device frame (1), the film roller (3) is installed on a bracket on one side of the device frame (1), an electric cylinder (4) is fixedly installed on the top of the gantry (2), the telescopic end of the electric cylinder (4) is fixedly connected to a device plate (41), a pressing plate (5) and a film cutting mechanism (6) are respectively arranged at the bottom of the device plate (41), the film cutting mechanism (6) comprises a cutter and an electric telescopic rod, gas spring rods (7) are respectively fixedly installed at both ends of the bottom of the device plate (41), the telescopic end of the gas spring rod (7) is fixedly connected to the end of the pressing plate (5), a clearance groove (51) is provided on the top of the pressing plate (5), an air pump (8) is fixedly installed at the bottom of the device frame (1), and an adsorption hole (81) is provided in the middle of the partition (12).

2. A PET reflective film production and cutting device according to claim 1, characterized in that: Slide tables (11) are respectively installed on both sides of the top of the device frame (1), and the bottom end of the gantry (2) is installed on sliding blocks matching the slide tables (11).

3. A PET reflective film production and cutting device according to claim 1, characterized in that: One side of the reflective film looped around the outside of the film roller (3) passes through the bottom of the guide roller (31) and extends to below the film cutting mechanism (6).

4. A PET reflective film production and cutting device according to claim 1, characterized in that: The size of the clearance groove (51) matches the size of the cutting blade in the film cutting mechanism (6).

5. A PET reflective film production and cutting device according to claim 1, characterized in that: The gas spring rod (7) is a telescopic rod structure, and a return spring is provided between the fixed end and the telescopic end inside the gas spring rod (7).

6. A PET reflective film production and cutting device according to claim 1, characterized in that: A cavity structure is formed between the partition plate (12) and the inner wall of the device frame (1); the air pump (8) is connected to the cavity via a connecting pipe; and the adsorption hole (81) is located directly below the clearance groove (51).

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