CN219620470U

CN219620470U - Rolling cutter device for PVC film production

Info

Publication number: CN219620470U
Application number: CN202320820214.8U
Authority: CN
Inventors: 钱忠; 王国强
Original assignee: Suzhou Huasu Plastics Co Ltd
Current assignee: Suzhou Huasu Plastics Co Ltd
Priority date: 2023-04-13
Filing date: 2023-04-13
Publication date: 2023-09-01
Anticipated expiration: 2033-04-13

Abstract

The utility model relates to the technical field of PVC film production, in particular to a winding cutter device for PVC film production, which comprises: a driving part; a circular cutter connected to the drive member for driving the circular cutter from a retracted position to a cutting position proximate the backing roll; a straight cutter connected to the circular cutter; wherein the circular cutter comprises a circular cutter, the straight cutter comprises a cutter shell and a blade, and the blade can slide along a first direction relative to the cutter shell. The utility model adds a straight knife, which can form point contact with the back roller for thinner film products, and can cut off the film when the cutting pressure of the cutter is reduced, thus protecting the circular knife and the driving part.

Description

Rolling cutter device for PVC film production

Technical Field

The utility model relates to the technical field of PVC film production, in particular to a winding cutter device for PVC film production.

Background

The process for producing PVC film generally comprises: metering, mixing, banburying, open mixing, filtering, calendaring, drawing, embossing, cooling, rolling and packaging. In the winding step, the wound roll shaft needs to be removed, a new winding roll is replaced, and before the winding roll is replaced, the film 101 on the back roll 100 is cut by using a circular knife, as shown in fig. 1, and a specific cutting process is that the cutting cylinder 10 drives the circular knife 20 'to be attached to the surface of the back roll 100 and moves along the length direction of the back roll 100, as shown in fig. 2, to form a cutting track 101' on the film 101.

At present, the thickness of the film 101 is about 0.15mm-2mm, especially for the film 101 with the thickness of 0.5mm, in the process that the cylinder 10 drives the circular knife 20' to be attached to the surface of the back roller 100, the circular knife 20' may collide with the back roller 100, so that a notch is formed on the surface of the circular knife 20', and in the rolling cutting process, a discontinuous cutting line is formed, so that the film cannot be directly cut.

Disclosure of Invention

The utility model provides a winding cutter device for PVC film production, which comprises:

a driving part;

a circular cutter connected to the drive member for driving the circular cutter from a retracted position to a cutting position proximate the backing roll;

a straight cutter connected to the circular cutter;

the circular cutter comprises a circular cutter, the straight cutter comprises a cutter shell and a cutter blade, the cutter blade can slide along a first direction relative to the cutter shell, and an intersection point of the cutter blade in the first direction and the cutter moving direction is positioned on the surface of the back roller;

the area where the circular knife extends in the first direction to be close to the back roller is defined as a cutting area.

Preferably, the output end of the driving component is provided with a connecting seat, and the circular knife is connected to the connecting seat and can rotate relative to the connecting seat, so that different areas of the periphery of the circular knife are aligned with the cutting area.

Preferably, a positioning disc is arranged on one side of the circular knife, a plurality of gaps are formed in the positioning disc, a fixing disc is arranged on a rotating shaft of the circular knife, and a fixing pin is arranged on the fixing disc and is used for being clamped in the gaps of the positioning disc, so that the circular knife is fixed relative to the rotating shaft.

Preferably, the fixing pin is movable in a thickness direction of the circular knife, the fixing pin is elastically connected to the fixing plate, and the fixing pin has a tendency to move toward the circular knife.

Preferably, a strip-shaped groove is formed in one side of the cutter shell, a pressing sleeve is arranged on the outer wall of the cutter shell, the pressing sleeve is connected to the cutter blade, and the position of the cutter blade and the position of the cutter shell are fixed in a pressing state.

Preferably, the blade comprises an art designer blade.

Preferably, the angle between the first direction and the moving direction of the cutter is 45 degrees.

Compared with the prior art, the utility model has the advantages that:

the utility model adds a straight knife, which can form point contact with the back roller for thinner film products, and can cut off the film when the cutting pressure of the cutter is reduced, thus protecting the circular knife and the driving part.

Drawings

The drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the utility model will now be described, by way of example, with reference to the accompanying drawings, in which:

FIG. 1 is a prior art winding cutter device for PVC film production;

FIG. 2 is a schematic view of a knife cutting a film;

FIG. 3 is a schematic view of a winding cutter device for PVC film production according to the present utility model;

FIG. 4 is a schematic view of the present utility model for cutting a film using a blade;

fig. 5 is a schematic view of the present utility model for cutting a film using a circular knife.

Detailed Description

For a better understanding of the technical content of the present utility model, specific examples are set forth below, along with the accompanying drawings.

The utility model provides a winding cutter device for PVC film production, which aims to solve the problem of incomplete cutting of films with the thickness of 0.5mm, and is added with a set of straight cutters 30 on the basis of an original cutter, wherein the winding cutter device mainly comprises a driving part 10, a round cutter 20 and the straight cutters 30, the driving part 10 is used for driving the round cutter 20 to be in a contraction position or a cutting position, and it is understood that the normal winding of the films is not influenced when the round cutter 20 is in the contraction position, and the film products with the thickness of more than 0.5mm can be effectively cut when the round cutter 20 is in the cutting position, and the distance between the straight cutters 30 and a back roller 100 at the cutting position needs to be controlled to be in contact with the back roller 100 points for film products with the thickness of less than 0.5mm, especially products with the thickness of 0.15 mm.

Alternatively, the driving part 10 is driven by a cylinder, so that the device has the advantages of high reliability and quick control response.

Referring to fig. 4-5, the circular cutter 20 is connected to the driving part 10, and the driving part 10 is used for driving the circular cutter 20 from the contracted position to the cutting position close to the back roller 100, and the straight cutter 30 is connected to the circular cutter 20, so as to assist in using the film product with the thickness of less than 0.5 mm.

Wherein the circular cutter 20 comprises a circular cutter 23, the straight cutter 30 comprises a cutter shell 31 and a cutter blade 33, the cutter blade 33 can slide along a first direction relative to the cutter shell 31, and an intersection point of the cutter blade 33 in the first direction and the moving direction of the cutter 20 is positioned on the surface of the back roller 100; in this way, when the blade 33 slides in the first direction to the surface of the back roller 100 in the blade housing 31, the film can be contacted before the circular blade 23 and point contact can be formed on the surface of the back roller 100, so that the film 101 can be cut off under a small contact pressure, and the impact force of a large pressure to the blade tip can be avoided because the contact pressure is reduced.

As shown in fig. 4, a bar-shaped groove 301 is provided at one side of the cutter housing 31, a pressing sleeve 32 is provided at the outer wall of the cutter housing 31, the pressing sleeve 32 is connected to the blade 33, and the position of the blade 33 and the cutter housing 31 is fixed in a pressed state.

The compressing sleeve 32 is a rectangular sleeve, and a compressing bolt is arranged on the rectangular sleeve, when the bolt is screwed, the blade 33 is compressed on the blade shell 31, so that the blade 33 and the blade shell 31 are relatively fixed, and the relative position of the blade 33 and the blade shell 31 is adjusted according to the thickness of the film.

Preferably, the blade 33 comprises an art knife.

Preferably, the included angle between the first direction and the moving direction of the cutter 20 is 45 °, and when the blade 33 is beveled to the surface of the back roller 100 along an angle of 45 °, the included angle between the edge of the cutter tip and the film is ensured to be 45 °, so that the film is cut into two parts.

Further, a region of the circular knife 23 extending in the first direction to be close to the back roller 100 is defined as a cutting region, the output end of the driving part 10 is provided with a connecting seat 11, and the circular knife 23 is connected to the connecting seat 11 and can rotate relative to the connecting seat 11, so that different regions of the periphery of the circular knife 23 are aligned with the cutting region.

The circular knife 23 is fixed relative to the connecting seat 11 during cutting, namely, only one area of the periphery of the circular knife 23 is used for contacting the film 101, after the circular knife 23 is used for a long time, after the edge of the circular knife is passivated, the circular knife 23 can be rotated, so that the rest edges of the circular knife 23 are contacted with the film 101, the sustainable use of the circular knife 23 is ensured, and the circular knife 23 is replaced after the edge of the periphery of the circular knife 23 is completely passivated.

In a specific embodiment, a positioning disc 22 is disposed on one side of the circular knife 23, a plurality of notches are disposed on the positioning disc 22, a fixing disc 21 is disposed on a rotating shaft of the circular knife 23, and a fixing pin 24 is disposed on the fixing disc 21, and the fixing pin 24 is used for being clamped into the notch of the positioning disc 22, so that the circular knife 23 is fixed relative to the rotating shaft.

Referring to fig. 5, a fixing plate 211 is attached to the fixing plate 21, a fixing pin 24 is provided on the fixing plate 211, and in particular, the fixing pin 24 is movable in the thickness direction of the circular knife 23, the fixing pin 24 is elastically attached to the fixing plate 211, the fixing pin 24 has a tendency to move toward the circular knife 23, and when the fixing pin 24 is pulled outward, the fixing pin 24 is separated from a notch on the positioning plate 22, the circular knife 23 is rotated to replace the region where the blade is passivated, and the fixing pin 24 is replaced to the notch of the positioning plate 22 so that the circular knife 23 cannot rotate.

In combination with the embodiment, the utility model adds the straight knife, aiming at thinner film products, the straight knife can form point contact with the back roller, and the film can be cut off when the cutting pressure of the cutter is reduced, so that the circular knife and the driving part are protected.

While the utility model has been described with reference to preferred embodiments, it is not intended to be limiting. Those skilled in the art will appreciate that various modifications and adaptations can be made without departing from the spirit and scope of the present utility model. Accordingly, the scope of the utility model is defined by the appended claims.

Claims

1. A rolling cutters for PVC film production, its characterized in that includes:

a driving member (10);

-a circular cutter (20), the circular cutter (20) being connected to the drive member (10), the drive member (10) being adapted to drive the circular cutter (20) from a retracted position to a cutting position proximate the backing roll (100);

-a straight cutter (30) connected to the circular cutter (20);

wherein the circular cutter (20) comprises a circular cutter (23), the straight cutter (30) comprises a cutter shell (31) and a cutter blade (33), the cutter blade (33) can slide along a first direction relative to the cutter shell (31), and an intersection point of the cutter blade (33) in the first direction and the moving direction of the circular cutter (20) is positioned on the surface of the back roller (100);

the area of the circular knife (23) extending in the first direction to close to the back roller (100) is defined as a cutting area.

2. A winding cutter device for PVC film production according to claim 1, wherein the output end of the driving member (10) is provided with a connecting seat (11), and the circular knife (23) is connected to the connecting seat (11) and is rotatable with respect to the connecting seat (11) to align different areas of the outer periphery of the circular knife (23) to the cutting area.

3. The winding cutter device for PVC film production according to claim 1, wherein one side of the circular knife (23) is provided with a positioning disc (22), a plurality of notches are formed in the positioning disc (22), a fixing disc (21) is arranged on a rotating shaft of the circular knife (23), a fixing pin (24) is arranged on the fixing disc (21), and the fixing pin (24) is used for being clamped into the notch of the positioning disc (22) so that the circular knife (23) is fixed relative to the rotating shaft.

4. A winding cutter apparatus for PVC film production according to claim 3, wherein the fixing pin (24) is movable in the thickness direction of the circular knife (23), the fixing pin (24) is elastically connected to the fixing plate (21), and the fixing pin (24) has a tendency to move toward the circular knife (23).

5. A winding cutter for PVC film production according to any of claims 1-4, wherein a strip-shaped groove (301) is provided on one side of the blade shell (31), the outer wall of the blade shell (31) is provided with a pressing sleeve (32), the pressing sleeve (32) is connected to the blade (33) and fixes the position of the blade (33) and the blade shell (31) in the pressed state.

6. A winding cutter for PVC film production according to claim 1, wherein the blade (33) comprises an art knife.

7. The winding cutter device for PVC film production according to claim 1, wherein the angle between the first direction and the moving direction of the circular cutter (20) is 45 degrees.