Search

CN-116214618-B - Film cutting machine and protective film cutting method

CN116214618BCN 116214618 BCN116214618 BCN 116214618BCN-116214618-B

Abstract

The invention discloses a film cutting machine which comprises a rack, wherein a detachable material roller and a rotatable rubber roller are arranged on the rack, the material roller and the rubber roller are arranged front and back, the film cutting machine also comprises a variable frequency motor arranged on the rack, one end of the rubber roller is fixedly connected with an output shaft of the variable frequency motor, and when the length of a protective film pulled by the rubber roller from the material roller reaches a preset length, the variable frequency motor stops running. The invention also discloses a protective film cutting method, which comprises the steps of installing the protective film material roller on the film cutting machine, and cutting the protective films with different lengths according to a preset cutting sequence by the film cutting machine. Compared with the method for cutting the protective film by visual inspection, the film cutting machine disclosed by the invention has the advantages that the cutting speed of the protective film is improved, the consumption of the protective film can be reduced, and unnecessary waste is avoided by controlling the computer and the roller encoder to output the protective film.

Inventors

  • YANG DONGBO

Assignees

  • 华晨宝马汽车有限公司

Dates

Publication Date
20260508
Application Date
20230308

Claims (9)

  1. 1. The film cutting machine comprises a rack, wherein a detachable material roller and a rotatable rubber roller are arranged on the rack, the material roller and the rubber roller are arranged front and back, the film cutting machine is characterized by further comprising a variable frequency motor arranged on the rack, one end of the rubber roller is fixedly connected with an output shaft of the variable frequency motor, when the length of a protective film pulled by the rubber roller from the material roller reaches a preset length, the variable frequency motor stops running, a U-shaped support with a horizontal opening is fixedly arranged on a supporting leg at the front side of the rack, a correlation grating is arranged on the U-shaped support, the correlation grating comprises a transmitter and a receiver, and the transmitter and the receiver are respectively fixedly arranged inside two opposite side rods of the U-shaped support.
  2. 2. The film cutting machine according to claim 1, further comprising a control computer, wherein the control computer is in communication connection with the variable frequency motor.
  3. 3. The film cutting machine according to claim 2, wherein a rodless cylinder is fixedly arranged at the front part of the rack, a cutter is fixedly arranged on a sliding table of the rodless cylinder, and the rodless cylinder is in communication connection with the control computer.
  4. 4. The film cutting machine according to claim 3, wherein a roller encoder is fixedly connected to the rear portion of the rack, a roller surface of the roller encoder is attached to the protective film wound by the rubber roller, and the roller encoder is in communication connection with the control computer.
  5. 5. The film cutting machine according to claim 4, wherein the stand comprises a deck plate and a plurality of supporting legs, the deck plate is fixedly arranged at the tops of the supporting legs, mounting plates are fixedly arranged at two ends of the deck plate, and the material roller and the rubber roller are arranged on the two mounting plates.
  6. 6. The film cutting machine as set forth in claim 1, further comprising an LED display mounted on the gantry, the LED display being in communication with the receiver.
  7. 7. A protective film cutting method, characterized by comprising the steps of mounting a protective film material roller to the film cutting machine according to any one of claims 1 to 6, and cutting protective films of different lengths in a preset cutting order.
  8. 8. The method of claim 7, wherein the step of cutting the protective films of different lengths in a predetermined cutting order includes cutting three protective films of different lengths, the three protective films of different lengths being respectively adapted to an engine compartment cover, a roof cover, and a trunk cover of the vehicle.
  9. 9. The method of claim 7, wherein the step of cutting the protective films of different lengths in a predetermined cutting order includes cutting two protective films of different lengths, the two protective films of different lengths being respectively adapted to an engine compartment cover and a roof cover of the vehicle.

Description

Film cutting machine and protective film cutting method Technical Field The invention belongs to the technical field of cutting equipment, and relates to a film cutting machine. Background When new fuel automobiles and electric automobiles leave the factory, in order to avoid damage to the paint surface outside the automobile body, paint surface protection films are generally covered at the positions of an engine compartment cover, an automobile body top, a luggage compartment cover and the like of the automobile body of the sedan. The paint protection film is a protection measure for avoiding the damage of the paint on the surface of the vehicle body in transportation, and when the vehicle leaves the factory, a worker cuts the protection film with the area which is matched with the area of the position (such as the engine compartment cover) of the vehicle body, which needs to be coated, from the protection film cutting machine, and then the protection film is attached on the vehicle body. When a worker cuts a protective film, the worker usually pulls the protective film having a length approximately meeting the requirements from the film cutting machine after simply measuring the hood of the vehicle engine, and then cuts the protective film by operating a cutter of the film cutting machine. In other words, the existing film cutting machine cannot accurately control the length of the film, and a worker can only judge whether the length of the cut film meets the requirement according to the sense and working experience of the worker when the worker takes the film. If the length of the cut film is too short, the protective film needs to be cut again because the protective film cannot cover the paint area to be protected, so that workers tend to cut the protective film longer, and unnecessary waste is caused. Disclosure of Invention The invention aims to provide a film cutting machine which can cut a protective film with a corresponding length according to a preset length, so that unnecessary waste is avoided. The aim of the invention can be achieved by the following technical scheme: the utility model provides a film cutting machine, includes the rack, install detachable material roller and rotatable rubber roll on the rack, the material roller with arrange around the rubber roll, still including installing inverter motor on the rack, the one end of rubber roll with inverter motor's output shaft fixed connection the rubber roll is followed when the protection film length that the material roller pulled reaches preset length, inverter motor stops the operation. Optionally, the variable frequency motor further comprises a control computer, wherein the control computer is in communication connection with the variable frequency motor. Optionally, a rodless cylinder is fixedly arranged at the front part of the rack, a cutter is fixedly arranged on a sliding table of the rodless cylinder, and the rodless cylinder is in communication connection with a control computer. Optionally, the back part of the rack is fixedly connected with a roller encoder, the roller surface of the roller encoder is tangent to the protective film wound by the rubber roller, and the roller encoder is in communication connection with a control computer. Optionally, the rack includes deck plate and many supporting legs, deck plate fixed mounting is in many the supporting leg top, the equal fixed mounting in deck plate both ends has the mounting panel, material roller and rubber roll are installed two on the mounting panel. Optionally, a scale is fixedly installed on the supporting leg at the front side of the rack. Optionally, one or more pointers are slidably mounted on the scale. Optionally, a U-shaped bracket with a horizontal opening is fixedly arranged on the supporting leg at the front side of the rack, and a correlation grating is arranged on the U-shaped bracket. Optionally, the correlation grating comprises an emitter and a receiver, and the emitter and the receiver are respectively fixedly installed inside two opposite side bars of the U-shaped bracket. Optionally, the device further comprises an LED display screen mounted on the rack, and the LED display screen is in communication connection with the receiver. The invention also provides a protective film cutting method, which comprises the step of installing the protective film material roller on any one of the film cutting machines and the step of cutting protective films with different lengths according to a preset cutting sequence. Optionally, the step of cutting the protective films with different lengths according to a preset cutting sequence includes cutting three protective film lengths with different lengths, wherein the three protective films with different lengths are respectively matched with an engine compartment cover, a vehicle roof cover and a luggage compartment cover of the vehicle. Optionally, the step of cutting the protective films with different lengths accord