Gap cutting device for plastic film production

Abstract

The utility model relates to a gap cutting device for plastic film production, which comprises a cutting roller and a supporting roller which are connected with a rack, arranged up and down and synchronously and reversely rotated, and a horizontally conveyed plastic film passes through the space between the cutting roller and the supporting roller to complete gap cutting; the cutting roller is a heating roller, a plurality of cutting blades which are distributed in the circumferential direction of the cutting roller and arranged in the axial direction of the cutting roller are arranged on the roller surface of the cutting roller, and the heating roller conducts heat to heat the cutting blades. A plastic film penetrates through the position between the cutting roller and the supporting roller, the cutting roller rotates to make the heated cutting blade make contact with the plastic film, and gaps are formed in the plastic film through ironing. According to the thin film winding device, the gap forming mode is changed into seam ironing from hard impact, the regularity of gaps can be effectively improved, the thin film winding quality is improved, and the situation that the gaps are not completely punched open can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production, in particular to a slit cutting device for plastic film production. Background Art

[0002] Plastic film is made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins. When plastic film is produced, gaps for planting are evenly opened on the film for the convenience of growers.

[0003] The current slit opening method commonly used in the industry is to use a lifting cutter to impact the film to create a slit. This processing method has the following problems: the slits created by the impact are irregular, which makes the film loose when rolled up, and the rolling quality does not meet the technical requirements; at the same time, some slits are not completely opened, which affects the use of growers.

[0004] Based on the above technical problems, the applicant proposed a slit cutting device for plastic film production, which changes the slit opening method from hard impact to "hot seam", which can effectively improve the regularity of the slit, improve the film winding quality, and effectively avoid the situation where the slit is not completely opened. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and provides a slit cutting device for producing plastic films.

[0006] The utility model is realized through the following technical scheme, and provides a slit cutting device for plastic film production, comprising a cutting roller and a supporting roller which are connected to a frame and arranged up and down and rotate synchronously in opposite directions, and the horizontally transported plastic film passes through between the cutting roller and the supporting roller and completes the slit cutting; the cutting roller is a heating roller, and a plurality of cutting blades which are distributed along the circumference and arranged along the axial direction are arranged on the roller surface of the cutting roller, and the heat conduction of the heating roller causes the cutting blades to heat up.

[0007] Preferably, in order to improve the cutting effect, a plurality of knife grooves distributed along its circumference and arranged along its axial direction are provided on the roller surface of the support roller, and when the cutting roller and the support roller rotate synchronously in opposite directions, the cutting blades are embedded in the corresponding knife grooves one by one.

[0008] Preferably, the heating roller is an electromagnetic heating roller or an electrically heated shaft roller.

[0009] Preferably, the cutting roller and the supporting roller are driven by reduction motors respectively, the reduction motors are mounted on the frame, and the cutting roller and the supporting roller have the same rotational speed.

[0010] Preferably, the spacing of the gaps needs to be adjusted according to different planting needs, which requires that the number of cutting blades needs to be adjusted accordingly. In order to facilitate the adjustment of the number of cutting blades, the cutting blades are further arranged in a detachable structure. A metal collar is sleeved on the roller surface of the cutting roller, and the metal collar is connected to the cutting roller through a fixing member. The cutting blades are arranged on the outer wall of the metal collar and distributed along the circumference thereof; the cutting blades are welded and fixed on the metal collar. The cutting blades and the metal collar can be removed as a whole, which is convenient for overall replacement.

[0011] Preferably, the fixing member is a fixing screw.

[0012] The beneficial effects of the utility model are:

[0013] The plastic film passes through the cutting roller and the supporting roller, and the cutting roller rotates so that the heated cutting blade contacts the plastic film and creates a slit on the plastic film. The present application changes the slit-making method from hard impact to "slit-making", which can effectively improve the regularity of the slit, improve the film winding quality, and effectively avoid the situation where the slit is not completely opened. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view structural schematic diagram of the utility model;

[0015] Figure 2 This is a front view structural schematic diagram of the utility model;

[0016] Figure 3 This is a front view of the connection between the metal sleeve and the cutting roller of the utility model;

[0017] As shown in the figure:

[0018] 1. Cutting roller, 2. Support roller, 3. Cutting blade, 4. Knife groove, 5. Plastic film, 6. Metal ring. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0020] like Figure 1 , 2 As shown in Figure 3, the utility model comprises a cutting roller 1 and a supporting roller 2 connected to a frame and arranged up and down and rotating synchronously in opposite directions. The horizontally transported plastic film 5 passes through the cutting roller 1 and the supporting roller 2 and completes the slit cutting. The cutting roller 1 is a heating roller, and a plurality of cutting blades 3 distributed along the circumference and arranged along the axial direction are arranged on the roller surface of the cutting roller 1. The heat conduction of the heating roller heats up the cutting blades 3.

[0021] In this embodiment, in order to improve the cutting effect, a plurality of knife grooves 4 distributed along its circumference and arranged along its axial direction are provided on the roller surface of the support roller 2. When the cutting roller 1 and the support roller 2 rotate synchronously in opposite directions, the cutting blades 3 are embedded in the corresponding knife grooves 4 one by one.

[0022] In this embodiment, the heating roller is an electromagnetic heating roller or an electrically heated shaft roller.

[0023] In this embodiment, the cutting roller 1 and the supporting roller 2 are driven by reduction motors respectively, and the reduction motors are installed on the frame. The cutting roller 1 and the supporting roller 2 have the same rotation speed.

[0024] In this embodiment, according to different planting needs, the spacing of the gaps also needs to be adjusted accordingly, which requires that the number of cutting blades 3 also needs to be adjusted accordingly. In order to facilitate the adjustment of the number of cutting blades 3, the cutting blades 3 are further arranged in a detachable structure. A metal collar 6 is sleeved on the roller surface of the cutting roller 1, and the metal collar 6 is connected to the cutting roller 1 through a fixing member. The cutting blades 3 are arranged on the outer wall of the metal collar 6 and distributed along its circumference. The cutting blades 3 are welded and fixed on the metal collar 6. The cutting blades 3 and the metal collar 6 can be removed as a whole, which is convenient for overall replacement. In this embodiment, the fixing member is a fixing screw.

[0025] When in use, the plastic film 5 passes between the cutting roller 1 and the supporting roller 2, and the cutting roller 1 rotates so that the heated cutting blade 3 contacts the plastic film 5 and irons a slit on the plastic film 5. The present application changes the slit-making method from hard impact to "iron seam", which can effectively improve the regularity of the slit, improve the film winding quality, and effectively avoid the situation where the slit is not completely opened.

[0026] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved by or by adopting the existing technology, which will not be repeated here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A slit cutting device for plastic film production, characterized in that: It includes a cutting roller and a supporting roller which are connected to the frame and arranged up and down and rotate synchronously in opposite directions. The horizontally transported plastic film passes through the cutting roller and the supporting roller and completes the gap cutting. The cutting roller is a heating roller. A plurality of cutting blades are arranged along its circumference and along its axial direction on the roller surface of the cutting roller. The heat conduction of the heating roller heats up the cutting blades.

2. A slit cutting device for plastic film production according to claim 1, characterized in that: A plurality of knife grooves are arranged on the roller surface of the supporting roller distributed along the circumference thereof and arranged along the axial direction thereof. When the cutting roller and the supporting roller rotate synchronously in opposite directions, the cutting blades are embedded in the corresponding knife grooves one by one.

3. A slit cutting device for plastic film production according to claim 2, characterized in that: The heating roller is an electromagnetic heating roller or an electrically heated shaft roller.

4. A slit cutting device for plastic film production according to claim 1, characterized in that: The cutting roller and the supporting roller are driven by reduction motors respectively. The reduction motors are installed on the frame. The speeds of the cutting roller and the supporting roller are equal.

5. A slit cutting device for plastic film production according to claim 1, characterized in that: A metal sleeve is sleeved on the roller surface of the cutting roller, and the metal sleeve is connected to the cutting roller through a fixing piece. The cutting blades are arranged on the outer wall of the metal sleeve and distributed along the circumference thereof; the cutting blades are welded and fixed on the metal sleeve.

6. A slit cutting device for plastic film production according to claim 5, characterized in that: The fixing member is a fixing screw.

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