PET film cutting device

Abstract

The utility model relates to the technical field of PET film processing, in particular to a PET film cutting device which comprises a machine frame, a frame is fixedly connected to the top of the machine frame, an air cylinder is installed on the top of the frame, a cutting knife is installed at the end of an output shaft of the air cylinder, smoothing mechanisms are arranged on the inner side and the outer side of the frame, and the smoothing mechanisms are arranged on the inner side and the outer side of the frame. The flattening mechanism is used for flattening wrinkles generated in the PET film cutting and installing process, the flattening mechanism comprises a linkage assembly, a driving assembly and a flattening roller assembly, the flattening mechanism enables a flattening roller to descend to the position making contact with the surface of the PET film, the moving plate in the descending state and the flattening roller press and limit the end of the PET film, and the flattening roller is driven by the linkage assembly to move downwards to move downwards. And therefore, the situation that the PET film is prone to protruding when the PET film is cut by the cutting knife is avoided, wrinkles generated in the PET film cutting process are smoothed through the smoothing roller in the reciprocating horizontal movement state, and the finished product quality of the cut PET film is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PET film processing, in particular to a PET film cutting device. Background Technique

[0002] PET film, also known as high-temperature resistant polyester film, has excellent physical properties, chemical properties, dimensional stability, transparency and recyclability, and is a relatively comprehensive packaging film.

[0003] The production process of PET film mainly includes processes such as proportioning, extrusion molding, cooling, surface coating with antistatic liquid, cutting and packaging. Among them, in the cutting process of PET film, a cutting device is required for cutting. The existing PET film cutting device transports the uncut PET to the cutting table through a conveyor belt in a running state, and then the cutting knife in a descending state cuts the PET film. However, when the uncut PET is transported to the cutting table, the end of the PET film will bulge, and the PET film is not attached to the surface of the workbench, which will cause the cut surface of the cut PET film to be uneven, and wrinkles will also be generated during the cutting process of the PET film, affecting the finished product quality of the cut PET film. Content of the Utility Model

[0004] The purpose of the utility model is to provide a PET film cutting device to solve the problem that wrinkles will be generated during the cutting process of PET film, affecting the finished product quality of the cut PET film as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: A PET film cutting device includes a frame. The top of the frame is fixedly connected with a framework. The top of the framework is provided with a cylinder. The end of the output shaft of the cylinder is provided with a cutting knife. A smoothing mechanism is arranged inside and outside the framework. The smoothing mechanism is used to smooth the wrinkles generated during the cutting process of the PET film.

[0006] The smoothing mechanism includes a linkage component, a driving component and a smoothing roller component.

[0007] The linkage component is used to drive the smoothing roller component to move up and down.

[0008] The driving component is used to drive the smoothing roller component to move horizontally back and forth.

[0009] And the smoothing roller component in a horizontally reciprocating moving state is used to smooth the wrinkles generated during the cutting process of the PET film.

[0010] Preferably, a conveyor belt, a cutting table and a blanking rack are sequentially arranged from left to right inside the frame, and the output shaft of the cylinder in a running state is used to drive the cutting knife to move up and down.

[0011] Preferably, the linkage assembly includes a connecting gear, a transmission gear, a connecting rod, two T-shaped grooves, T-shaped blocks, and racks;

[0012] The T-shaped grooves are formed in the inner wall of the frame. The T-shaped blocks are slidably connected to the inside of the T-shaped grooves. The racks are mounted at the ends of the T-shaped blocks. One end of the connecting rod is slidably connected to the output shaft of the cylinder, and the other end of the connecting rod is fixedly connected to one of the racks. The connecting gear and the transmission gear are respectively rotatably mounted on the inner side of the frame through two connecting shafts.

[0013] Preferably, the connecting gear meshes with the transmission gear, and the transmission gear meshes with the tooth grooves of one of the racks, and the connecting gear meshes with the tooth grooves of the other rack.

[0014] Preferably, the driving assembly includes a lifting frame, a sliding groove, a sliding block, a motor, and a lead screw;

[0015] The lifting frame is mounted at the bottom of the other rack. The sliding groove is formed in one side of the lifting frame and extends into it. The sliding block is slidably connected to the inside of the sliding groove. The motor is mounted on the outside of the lifting frame. The lead screw is rotatably mounted in the sliding groove, and the lead screw is connected to the sliding block through a lead screw seat.

[0016] Preferably, the lead screw is fixedly connected to the end of the output shaft of the motor, and the operating motor is used to drive the sliding block to move through the lead screw.

[0017] Preferably, the smoothing roller assembly includes a moving plate and a smoothing roller;

[0018] The moving plate is fixedly connected to the end of the sliding block. The smoothing roller is rotatably mounted at the bottom of the moving plate. The descending and reciprocatingly moving smoothing roller contacts the surface of the PET film.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows: For this smoothing mechanism, the smoothing roller descends to a position where it contacts the surface of the PET film, and the descending moving plate and the smoothing roller press and limit the end of the PET film, thereby avoiding the situation that the PET film is prone to bulge when being cut by the cutting knife. Moreover, the reciprocatingly horizontally moving smoothing roller smooths the wrinkles generated during the cutting process of the PET film, effectively improving the finished product quality of the cut PET film. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main structure of the present utility model;

[0021] Figure 2Schematic diagram of the flattening mechanism of the present utility model;

[0022] Figure 3 Schematic diagram of another perspective structure of the flattening mechanism of the present utility model;

[0023] Figure 4 For the present utility model Figure 3 Schematic diagram of structure A in.

[0024] In the figure: 1, frame; 2, framework; 3, conveyor belt; 4, cutting table; 5, blanking rack; 6, cylinder; 7, cutting knife; 8, flattening mechanism; 801, T-shaped groove; 802, T-shaped block; 803, rack; 804, connecting gear; 805, driving gear; 806, lifting frame; 807, moving plate; 808, sliding groove; 809, slider; 8010, connecting rod; 8011, flattening roller; 8012, motor; 8013, lead screw. Detailed implementation manners

[0025] 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. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 - 4 , the present utility model provides a technical solution for a PET film cutting device: a PET film cutting device, including a frame 1, a framework 2 is fixedly connected to the top of the frame 1, a cylinder 6 is installed on the top of the framework 2, a cutting knife 7 is installed at the end of the output shaft of the cylinder 6, a flattening mechanism 8 is arranged inside and outside the framework 2, and the flattening mechanism 8 is used to flatten the wrinkles generated during the cutting process of the PET film;

[0027] The flattening mechanism 8 includes a linkage assembly, a driving assembly and a flattening roller assembly;

[0028] The linkage assembly is used to drive the flattening roller assembly to move up and down;

[0029] The driving assembly is used to drive the flattening roller assembly to move horizontally back and forth;

[0030] And the flattening roller assembly in the state of moving horizontally back and forth is used to flatten the wrinkles generated during the cutting process of the PET film.

[0031] Please pay special attention to referring to Figure 1 , inside the frame 1, a conveyor belt 3, a cutting table 4 and a blanking rack 5 are arranged in sequence from left to right, and the output shaft of the cylinder 6 in the operating state is used to drive the cutting knife 7 to move up and down.

[0032] In this embodiment: When it is necessary to cut the PET film, first place the uncut PET film on the conveyor belt 3. The uncut PET is transported to the cutting table 4 by the conveyor belt 3 in the running state, and the cutting knife 7 in the descending state cuts the PET film. Thus, the cut PET film is discharged through the discharging rack 5.

[0033] Please refer specifically to Figure 3 , the linkage assembly includes a connecting gear 804, a transmission gear 805, a connecting rod 8010, and two T-shaped grooves 801, T-shaped blocks 802, and racks 803;

[0034] The T-shaped groove 801 is opened on the inner wall of the frame 2. The T-shaped block 802 is slidably connected to the inside of the T-shaped groove 801. The rack 803 is installed at the end of the T-shaped block 802. One end of the connecting rod 8010 is slidably connected to the output shaft of the air cylinder 6, and the other end of the connecting rod 8010 is fixedly connected to a rack 803. The connecting gear 804 and the transmission gear 805 are respectively rotatably installed on the inner side of the frame 2 through two connecting shafts.

[0035] In this embodiment: The output shaft of the air cylinder 6 in the descending state drives a rack 803 to move downward through the connecting rod 8010. Then, the descending rack 803 drives a T-shaped block 802 to move downward along the track of a T-shaped groove 801. Since the transmission gear 805 meshes with the tooth groove of a rack 803, the descending rack 803 drives the transmission gear 805 to rotate. Since the connecting gear 804 meshes with the transmission gear 805, the rotating transmission gear 805 drives the connecting gear 804 to rotate synchronously. Since the connecting gear 804 meshes with the tooth groove of another rack 803, the rotating connecting gear 804 drives another rack 803 to move downward. Then, the descending another rack 803 drives another T-shaped block 802 to move downward along the track of another T-shaped groove 801. At this time, the descending another rack 803 drives the lifting frame 806, the moving plate 807, and the flattening roller 8011 to move downward, and the flattening roller 8011 is lowered to a position in contact with the surface of the PET film, so that the descending moving plate 807 and the flattening roller 8011 press and limit the end of the PET film, and the PET film is attached to the surface of the cutting table 4. At this time, the descending cutting knife 7 cuts the PET film, thereby avoiding the situation that the PET film is prone to bulge when the cutting knife 7 cuts the PET film.

[0036] Please refer specifically to Figure 3 , the connecting gear 804 meshes with the transmission gear 805, and the transmission gear 805 meshes with the tooth groove of a rack 803, and the connecting gear 804 meshes with the tooth groove of another rack 803.

[0037] In this embodiment: Since the transmission gear 805 meshes with the tooth groove of a rack 803, the rack 803 in the descending state drives the transmission gear 805 to rotate. Since the connecting gear 804 meshes with the transmission gear 805, the rotating transmission gear 805 drives the connecting gear 804 to rotate synchronously. Since the connecting gear 804 meshes with the tooth groove of the other rack 803, the rotating connecting gear 804 drives the other rack 803 to move downward.

[0038] Please refer particularly to Figure 2 , the driving assembly includes a lifting frame 806, a sliding groove 808, a sliding block 809, a motor 8012 and a lead screw 8013;

[0039] The lifting frame 806 is installed at the bottom of the other rack 803. The sliding groove 808 is opened on one side of the lifting frame 806 and extends into it. The sliding block 809 is slidably connected to the inside of the sliding groove 808. The motor 8012 is installed on the outside of the lifting frame 806. The lead screw 8013 is rotatably installed inside the sliding groove 808, and the lead screw 8013 is connected to the sliding block 809 through a lead screw seat.

[0040] In this embodiment: By connecting the power supply to the motor 8012 to make it operate, the operating motor 8012 drives the lead screw 8013 to rotate. Then the rotating lead screw 8013 drives the sliding block 809 to reciprocate along the track of the sliding groove 808. The moving sliding block 809 drives the flattening roller 8011 to reciprocate through the moving plate 807.

[0041] Please refer particularly to Figure 4 , the lead screw 8013 is fixedly connected to the end of the output shaft of the motor 8012, and the operating motor 8012 is used to drive the sliding block 809 to move through the lead screw 8013.

[0042] In this embodiment: The operating motor 8012 drives the lead screw 8013 to rotate. Then the rotating lead screw 8013 drives the sliding block 809 to reciprocate along the track of the sliding groove 808.

[0043] Please refer particularly to Figure 4 , the flattening roller assembly includes a moving plate 807 and a flattening roller 8011;

[0044] The moving plate 807 is fixedly connected to the end of the sliding block 809. The flattening roller 8011 is rotatably installed at the bottom of the moving plate 807. The descending and reciprocating flattening roller 8011 contacts the surface of the PET film.

[0045] In this embodiment: The slider 809 in the moving state drives the smoothing roller 8011 to move reciprocally through the moving plate 807. Then, the smoothing roller 8011 in the reciprocating horizontal moving state smooths the wrinkles generated during the PET film cutting process, effectively improving the finished product quality of the cut PET film.

[0046] Working principle: When the PET film needs to be cut, first place the uncut PET film on the conveyor belt 3. The conveyor belt 3 in the running state transports the uncut PET to the cutting table 4. At this time, power on the cylinder 6 to run, so that the output shaft of the cylinder 6 in the running state drives the cutting knife 7 to move downward. At the same time, the output shaft of the cylinder 6 in the downward state drives a rack 803 to move downward through the connecting rod 8010. Then, the downward state of a rack 803 drives a T-shaped block 802 to move downward along the trajectory of a T-shaped groove 801. Since the transmission gear 805 meshes with the tooth groove of a rack 803, the downward state of a rack 803 drives the transmission gear 805 to rotate. Since the connecting gear 804 meshes with the transmission gear 805, the rotating state of the transmission gear 805 drives the connecting gear 804 to rotate synchronously. Since the connecting gear 804 meshes with the tooth groove of another rack 803, the rotating state of the connecting gear 804 drives another rack 803 to move downward. Then, the downward state of another rack 803 drives another T-shaped block 802 to move downward along the trajectory of another T-shaped groove 801. At this time, the downward state of another rack 803 drives the lifting frame 806, the moving plate 807 and the smoothing roller 8011 to move downward, and the smoothing roller 8011 is lowered to the position where it contacts the surface of the PET film. The downward state of the moving plate 807 and the smoothing roller 8011 press and limit the end of the PET film, and the PET film is attached to the surface of the cutting table 4. At this time, the downward state of the cutting knife 7 cuts the PET film, thus avoiding the situation that the PET film is prone to bulge when the cutting knife 7 cuts the PET film;

[0047] At this time, power on the motor 8012 to run, so that the running state of the motor 8012 drives the lead screw 8013 to rotate. Then, the rotating state of the lead screw 8013 drives the slider 809 to move reciprocally along the trajectory of the chute 808. The moving state of the slider 809 drives the smoothing roller 8011 to move reciprocally through the moving plate 807. Then, the smoothing roller 8011 in the reciprocating horizontal moving state smooths the wrinkles generated during the PET film cutting process, effectively improving the finished product quality of the cut PET film.

[0048] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A PET film cutting device, comprising a frame (1), a frame (2) is fixedly connected to the top of the frame (1), a cylinder (6) is installed on the top of the frame (2), and a cutting knife (7) is installed at the end of the output shaft of the cylinder (6), characterized in that: The inner and outer sides of the frame (2) are provided with a flattening mechanism (8), and the flattening mechanism (8) is used to flatten the wrinkles generated during the cutting process of the PET film; The flattening mechanism (8) includes a linkage component, a driving component and a flattening roller component; The linkage component is used to drive the flattening roller component to move up and down; The driving component is used to drive the flattening roller component to move horizontally back and forth; And the flattening roller component in the state of horizontal reciprocating movement is used to flatten the wrinkles generated during the cutting process of the PET film.

2. The PET film cutting device according to claim 1, characterized in that: Inside the frame (1), a conveyor belt (3), a cutting table (4) and a blanking rack (5) are arranged in sequence from left to right, and the output shaft of the cylinder (6) in the operating state is used to drive the cutting knife (7) to move up and down.

3. A PET film cutting device according to claim 1, characterized in that: The linkage component includes a connecting gear (804), a transmission gear (805), a connecting rod (8010), and two T-shaped grooves (801), T-shaped blocks (802), and racks (803); The T-shaped groove (801) is opened on the inner wall of the frame (2), the T-shaped block (802) is slidably connected to the inside of the T-shaped groove (801), the rack (803) is installed at the end of the T-shaped block (802), one end of the connecting rod (8010) is slidably connected to the output shaft of the cylinder (6), and the other end of the connecting rod (8010) is fixedly connected to one of the racks (803). The connecting gear (804) and the transmission gear (805) are respectively rotatably installed inside the frame (2) through two connecting shafts.

4. A PET film cutting device according to claim 3, characterized in that: The connecting gear (804) meshes with the transmission gear (805), and the transmission gear (805) meshes with the tooth groove of one of the racks (803), and the connecting gear (804) meshes with the tooth groove of the other rack (803).

5. The PET film cutting device according to claim 3, characterized in that: The driving component includes a lifting frame (806), a chute (808), a slider (809), a motor (8012) and a lead screw (8013); The lifting frame (806) is installed at the bottom of the other rack (803), the chute (808) is opened on one side of the lifting frame (806) and extends into it, the slider (809) is slidably connected to the inside of the chute (808), the motor (8012) is installed outside the lifting frame (806), the lead screw (8013) is rotatably installed inside the chute (808), and the lead screw (8013) and the slider (809) are connected through a lead screw seat.

6. A PET film cutting device according to claim 5, characterized in that: The lead screw (8013) is fixedly connected to the end of the output shaft of the motor (8012), and the operating motor (8012) is used to drive the slider (809) to move through the lead screw (8013).

7. A PET film cutting device according to claim 5, characterized in that: The flattening roller component includes a moving plate (807) and a flattening roller (8011); The moving plate (807) is fixedly connected to the end of the slider (809), and the smoothing roller (8011) is rotatably mounted on the bottom of the moving plate (807). The smoothing roller (8011) in a state of descending and reciprocating movement contacts the surface of the PET film.

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