Cutting device for CPP film

Abstract

The utility model discloses a cutting device for CPP film, including support module and cutting module, the support module includes the main part and installs first mounting plate, second mounting plate and the roller mounting bracket of main part, install third mounting plate between first mounting plate with second mounting plate, cutting module includes first film pulling unit, second film pulling unit and cutting unit, first film pulling unit installs first mounting plate with second film pulling unit installs second mounting plate, first film pulling unit with second film pulling unit all include first driver, film pulling cylinder and positioning cylinder. The utility model discloses a cutting device for CPP film, overcomes the defect of low cutting accuracy and poor efficiency of CPP film cutting device in the prior art.

Description

Technical Field

[0001] This utility model belongs to the technical field of thin film processing equipment, specifically relating to a cutting device for CPP film. Background Technology

[0002] CPP film, or cast polypropylene film, boasts advantages such as high transparency, good gloss, excellent stiffness, and strong temperature resistance, making it widely used in food packaging, daily necessities packaging, and electronic product packaging. During the production and processing of CPP film, rolls of CPP film need to be cut into sheets of specific sizes according to actual usage requirements; therefore, the cutting device is one of the key pieces of equipment in the CPP film processing production line.

[0003] Currently, common CPP film cutting devices on the market have some shortcomings in use: On the one hand, some cutting devices have poor stretching and positioning effects on the film, which can easily lead to film misalignment and wrinkles during the cutting process, resulting in low dimensional accuracy of the cut film and affecting subsequent use; on the other hand, some cutting devices lack continuity in the cutting process, requiring manual adjustment of the film position after each cut before the next cut can be made, which not only increases the labor intensity of operators but also reduces the overall cutting efficiency, making it difficult to meet the production needs of large-scale CPP film processing. Utility Model Content

[0004] The main purpose of this invention is to provide a CPP film cutting device that overcomes the shortcomings of low cutting accuracy and poor efficiency in existing CPP film cutting devices. The device can stably clamp and accurately stretch and position the CPP film, and complete efficient and continuous cutting operations, effectively improving cutting quality and production efficiency.

[0005] To achieve the above objectives, this utility model provides a cutting device for CPP film, including a support module and a cutting module, wherein the cutting module is installed on the support module, wherein: The support module includes a main body and a first mounting plate, a second mounting plate and a roller mounting frame mounted on the main body. A third mounting plate is mounted between the first mounting plate and the second mounting plate. The roller mounting frame is equipped with rollers and the rollers are wound with CPP film to be cut. The cutting module includes a first film stretching unit, a second film stretching unit, and a cutting unit. The first film stretching unit is mounted on the first mounting plate, and the second film stretching unit is mounted on the second mounting plate. Both the first film stretching unit and the second film stretching unit include a first driver, a film stretching cylinder, and a positioning cylinder. The film stretching cylinder is mounted on the driving end of the first driver, and the positioning cylinder is located between the film stretching cylinder and the roller. Both the film stretching cylinder and the positioning cylinder are provided with a first clamping block and a second clamping block. The cutting unit includes a second driver, a cutting cylinder, and a blade. The second driver is fixedly mounted on the third mounting plate, and the cutting cylinder is mounted on the driving end of the second driver. The blade is fixedly mounted on the driving end of the cutting cylinder.

[0006] As a further preferred embodiment of the above technical solution, the first driver and positioning cylinder of the first film stretching unit are both fixedly mounted on the first mounting plate, and the first driver and positioning cylinder of the second film stretching unit are both fixedly mounted on the second mounting plate.

[0007] As a further preferred embodiment of the above technical solution, the driving direction of the driving end of the first driver is perpendicular to the driving direction of the driving end of the second driver.

[0008] As a further preferred embodiment of the above technical solution, the bottom of the main body is provided with foot pads.

[0009] As a further preferred embodiment of the above technical solution, the main body is provided with a collection box.

[0010] The beneficial effects of this utility model are as follows: 1. High cutting accuracy: By setting up a first film stretching unit and a second film stretching unit, the cooperation of the film stretching cylinder and the positioning cylinder realizes the dual clamping and positioning of the CPP film, which effectively avoids the film from shifting or wrinkling during stretching and cutting. At the same time, the cooperation of the second driver and the cutting cylinder can ensure that the blade moves at a uniform speed along the width of the film, further improving the accuracy of the cutting size.

[0011] 2. High cutting efficiency: The cutting process of this utility model is continuous. After one cutting is completed, there is no need for manual adjustment of the film position. The automatic feeding and positioning of the film can be achieved through the coordinated action of the film pulling cylinder and the positioning cylinder. This enables continuous cutting operations, greatly reduces the labor intensity of operators, improves the overall cutting efficiency, and meets the needs of large-scale production.

[0012] 3. Stable and reliable structure: The main body, first mounting plate, second mounting plate, third mounting plate and roller mounting frame in the support module are reasonably designed, providing stable installation support for the cutting module; at the same time, the foot pads at the bottom of the main body can enhance the stability of the device, reduce vibration and noise, and ensure long-term stable operation of the device.

[0013] 4. Easy to use: The collection box on the main body can automatically collect the cut film, which is convenient for subsequent processing; the operation of each component of the device can be automatically controlled by the PLC control system, which is simple and convenient to operate and reduces the skill level required of the operator. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a structural schematic diagram of the present invention (the support module is hidden).

[0016] The reference numerals in the accompanying drawings include: 11-main body, 12-first mounting plate, 13-second mounting plate, 14-roller mounting frame, 15-third mounting plate, 16-roller, 17-collection box; 21-first film stretching unit, 22-second film stretching unit, 23-second driver, 24-cutting cylinder, 211-first driver, 212-film stretching cylinder, 213-positioning cylinder, 214-first clamping block, 215-second clamping block. Detailed Implementation

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] This utility model discloses a cutting device for CPP film. The specific embodiments of the utility model are further described below with reference to preferred embodiments.

[0019] In the embodiments of this utility model, those skilled in the art will note that the CPP film and the like involved in this utility model can be considered as prior art.

[0020] Preferred embodiment.

[0021] like Figure 1-2 As shown, this utility model discloses a cutting device for CPP film, including a support module and a cutting module, wherein the cutting module is installed on the support module, wherein: The support module includes a main body 11 and a first mounting plate 12, a second mounting plate 13 and a roller mounting frame 14 mounted on the main body 11. A third mounting plate 15 is mounted between the first mounting plate 12 and the second mounting plate 13. A roller 16 is mounted on the roller mounting frame 14 and the roller 16 is wound with a CPP film to be cut. The cutting module includes a first film-stretching unit 21, a second film-stretching unit 22, and a cutting unit. The first film-stretching unit 21 is mounted on the first mounting plate 12, and the second film-stretching unit 22 is mounted on the second mounting plate 13. Both the first film-stretching unit 21 and the second film-stretching unit 22 include a first driver 211, a film-stretching cylinder 212, and a positioning cylinder 213. The film-stretching cylinder 212 is mounted on the driving end of the first driver 211, and the positioning cylinder 213 is located between the film-stretching cylinder 212 and the cutting unit. Between the rollers 16, the film-pulling cylinder 212 and the positioning cylinder 213 are each provided with a first clamping block 214 and a second clamping block 215. (When cutting is required, the cut CPP film is first led out from the rollers, and the two sides of the film pass between the first clamping block and the second clamping block of the positioning cylinder of the first / second film-pulling unit, respectively. Then it is clamped by the first clamping block and the second clamping block of the film-pulling cylinder of the first / second film-pulling unit. At this time, the first driver is activated so that the two film-pulling cylinders on both sides drive the film to move away from the rollers and unfold the film.) The cutting unit includes a second driver 23, a cutting cylinder 24, and a blade (not shown). The second driver 23 is fixedly mounted on the third mounting plate 15, and the cutting cylinder 24 is mounted on the driving end of the second driver 21. The blade is fixedly mounted on the driving end of the cutting cylinder 24. (After the film is unfolded, the positioning cylinders on both sides are activated so that the first and second clamping blocks of the positioning cylinders clamp and position the film. Then, the second driver is activated so that the cutting cylinder moves to one side of the film. Then, the cutting cylinder is activated to drive the blade to move downward until the cutting position is reached. The second driver is activated again to move the cutting cylinder and the blade to the other side of the film, thereby completing the cutting of one film. For the next cutting of the film, the first driver drives the film-pulling cylinder to move to a position close to the positioning cylinder. The first / second clamping blocks of the film-pulling cylinder clamp the film on the first / second clamping blocks of the positioning cylinder. After clamping, the first / second clamping blocks of the positioning cylinder release the film so that the film-pulling cylinder can unfold the film to be cut again.)

[0022] Specifically, the first driver and positioning cylinder of the first film stretching unit 21 are both fixedly installed on the first mounting plate 12, and the first driver and positioning cylinder of the second film stretching unit 22 are both fixedly installed on the second mounting plate 13.

[0023] More specifically, the driving direction of the first driver 211 is perpendicular to the driving direction of the second driver 23.

[0024] Furthermore, the bottom of the main body 11 is provided with foot pads (not shown).

[0025] Furthermore, the main body 11 is provided with a collection box 17 (for collecting the cut film).

[0026] The working process of this utility model is as follows: Initial preparation: Install the roller with the CPP film to be cut on the roller mounting frame, and then lead the free end of the CPP film out from the roller so that both sides of the film pass between the first clamping block and the second clamping block of the positioning cylinder of the first film stretching unit and between the first clamping block and the second clamping block of the positioning cylinder of the second film stretching unit, respectively.

[0027] Initial clamping and stretching: Control the action of the film-pulling cylinders of the first and second film-pulling units to close the first and second clamping blocks of the film-pulling cylinders, clamping the two sides of the film; then start the first driver, which drives the film-pulling cylinder to move away from the rollers, and the film-pulling cylinder drives the film to move synchronously, unfolding the film to the preset cutting length.

[0028] Positioning and Cutting: After the film is unfolded, the positioning cylinders of the first and second film stretching units are activated to close the first and second clamping blocks of the positioning cylinders, clamping and positioning the two sides of the film. Then, the second driver is activated, which drives the cutting cylinder to move to one side edge of the film. Then, the cutting cylinder is activated, and the piston rod of the cutting cylinder extends downward, driving the blade downward to the cutting position, initially pressing the edge of the film. Finally, the second driver is activated again, which drives the cutting cylinder to move the blade at a constant speed along the width of the film to the other side edge of the film, completing the cutting of one CPP film. The cut film falls into the collection box below.

[0029] Continuous cutting: After one cutting is completed, the first driver drives the film-pulling cylinder to move in the direction close to the positioning cylinder until the first clamping block and the second clamping block of the film-pulling cylinder re-clamp the film near the positioning cylinder. Then, the first clamping block and the second clamping block of the positioning cylinder are released. The first driver is started so that the film-pulling cylinder can unfold the film to be cut again, thus realizing the continuous cutting operation of CPP film.

[0030] It is worth mentioning that the CPP film and other technical features involved in this utility model patent application should be regarded as prior art. The specific structure, working principle and possible control methods and spatial arrangement of these technical features can be adopted by conventional choices in the field and should not be regarded as the inventive point of this utility model patent. This utility model patent will not elaborate further.

[0031] For those skilled in the art, modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cutting device for CPP film, characterized in that, It includes a support module and a cutting module, wherein the cutting module is mounted on the support module, wherein: The support module includes a main body and a first mounting plate, a second mounting plate and a roller mounting frame mounted on the main body. A third mounting plate is mounted between the first mounting plate and the second mounting plate. The roller mounting frame is equipped with rollers and the rollers are wound with CPP film to be cut. The cutting module includes a first film stretching unit, a second film stretching unit, and a cutting unit. The first film stretching unit is mounted on the first mounting plate, and the second film stretching unit is mounted on the second mounting plate. Both the first film stretching unit and the second film stretching unit include a first driver, a film stretching cylinder, and a positioning cylinder. The film stretching cylinder is mounted on the driving end of the first driver, and the positioning cylinder is located between the film stretching cylinder and the roller. Both the film stretching cylinder and the positioning cylinder are provided with a first clamping block and a second clamping block. The cutting unit includes a second driver, a cutting cylinder, and a blade. The second driver is fixedly mounted on the third mounting plate, and the cutting cylinder is mounted on the driving end of the second driver. The blade is fixedly mounted on the driving end of the cutting cylinder.

2. The CPP film cutting device according to claim 1, characterized in that, The first driver and positioning cylinder of the first film stretching unit are both fixedly mounted on the first mounting plate, and the first driver and positioning cylinder of the second film stretching unit are both fixedly mounted on the second mounting plate.

3. The CPP film cutting device according to claim 1, characterized in that, The driving direction of the first driver is perpendicular to the driving direction of the second driver.

4. A CPP film cutting device according to claim 1, characterized in that, The bottom of the main body is equipped with foot pads.

5. A CPP film cutting device according to claim 1, characterized in that, The main body is equipped with a collection box.

Images