CN220826054U - Plastic net cutting equipment - Google Patents

Abstract

The utility model discloses a plastic net cutting device, which comprises a first cutting disc, a second cutting disc, a first cutting disc and a second cutting disc, wherein the first cutting disc is pointed along the peripheral edge of the first cutting disc and rotates around a first rotation axis; at least one second cutting disk sharpened along its peripheral edge and rotated about a second axis of rotation; wherein a second cutting disc is arranged in front of and coplanar with the first cutting disc with respect to the plastic web, wherein the first and second cutting discs are movable with respect to a support plane or with respect to which the plastic web to be cut is placed, the first and second cutting discs being selectively adjustable with respect to the support plane. The plastic web cutting apparatus of the present utility model can completely cut a material having a relatively hard thickness with respect to a hard material.

Description

Plastic net cutting equipment

Technical Field

The utility model relates to the technical field of plastic net processing, in particular to plastic net cutting equipment.

Background

Products such as packages of various sizes are often produced industrially using materials such as paper, cardboard, plastics materials, composites or other relatively rigid materials.

The known cutting device has the following disadvantages: only when the thickness of the material to be cut does not exceed about 3mm, and no longer when the thickness of the material exceeds this value.

Disclosure of utility model

The utility model provides a plastic net cutting device.

The specific technical scheme of the utility model is as follows:

a plastic web cutting apparatus comprising:

A first cutting disk sharpened along its peripheral edge and rotated about a first axis of rotation;

At least one second cutting disk sharpened along its peripheral edge and rotated about a second axis of rotation;

Wherein a second cutting disc is arranged in front of and coplanar with the first cutting disc with respect to the plastic web, wherein the first and second cutting discs are movable with respect to a support plane or with respect to which the plastic web to be cut is placed, the first and second cutting discs being selectively adjustable with respect to the support plane.

Preferably, the second cutting disc is sharper than the first cutting disc.

Preferably, the first cutting disc has a first diameter, a first thickness and a first cutting angle, and wherein the second cutting disc has a second diameter, a second thickness and a second cutting angle;

The first diameter is between about 50mm and about 150mm, the first thickness is between 1.5mm-3mm, and the first cutting angle is between 60 deg. -120 deg., the second diameter is between 25mm and 100mm, the second thickness is between 0.5mm and 1mm, and the second cutting angle is between about 10 deg. -30 deg..

The beneficial effects are that:

The processing apparatus of the present utility model may be used to completely cut a relatively hard material, such as paper, cardboard, plastic material, composite material or other material, having a relatively high thickness relative to the hard material.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a side view of a cutting device according to the invention in a non-operative position.

FIG. 2 is a side view of the cutting device of FIG. 1 in a first operative position;

FIG. 3 is a side view of the cutting device of FIG. 1 in a second operative position;

FIG. 4 is a side view of the cutting device of FIG. 1 in a third operating position;

FIG. 5 is a partial plan view of the cutting device of FIG. 1;

FIG. 6 is a partial cross-sectional view of the cutting device of FIG. 1;

FIG. 7 shows a first partial enlarged view of the cutting device of FIG. 1;

Fig. 8 shows a second enlarged detail of the cutting device of fig. 1.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Heat-shrinkable plastic webs are particularly useful for packaging various types of consumer products including, but not limited to, fresh produce such as cherries, grapes, apples, and the like.

Referring to fig. 1, a cutting device 10 according to the present invention is configured to cut a relatively rigid material 11, such as paper, cardboard, plastic material, composite material or others, having one or more overlapping layers. For example, the total thickness for manufacturing the box is between a few tenths of a millimeter, i.e. less than 1 millimeter, at most about 10 millimeters.

The cutting device 10 comprises, for example, a horizontal support plane 12, on which the material 11 is adapted to be placed.

The feed roller 13 is arranged with its cylindrical surface tangential to the upper surface of the support plane 12 and can rotate, indicated by the arrow F1, about a rotation axis X1 commanded by any known type of motor member, for example a motor not shown in the figures.

In cooperation with a pressure roller of a known type, not shown, the feed roller 13 is able to advance the material 11 along the support plane 12 in a feed direction indicated by the arrow F2.

The first cutting disk 14 is rotatably mounted with respect to the first support slider 15 about its rotation axis X2, which rotation axis X2 is parallel to the rotation axis X1 of the feed roller 13. The rotation of the first cutting disc 14 (arrow F3) takes place in the opposite direction to the feed roller 13 and commands the feed roller 13 by any known type of driving member (for example, the same motor as the motor) not shown in the figure.

The first cutting disc 14 is of a known type, typically having a diameter of between about 50mm and about 150mm, a thickness S1 (fig. 7) of between about 1.5mm and about 3mm, and the peripheral cutting edge 16 has a cutting angle α1 comprised between about 60 ° and about 120 ℃, preferably about 90 °.

The first support slide 15 is mounted on a fixed structure 17 (fig. 1) and is movable relative to the fixed structure in a direction perpendicular to the support plane 12 between an inactive position in which the maximum distance of the peripheral edge 16 of the first cutting disc 14 from the upper surface of the support plane 12 is at most about 10mm, for example about 7mm,8mm,9mm,10mm, and an active position (fig. 2 and 3) in which the peripheral edge 16 is in contact with the cylindrical surface of the feed roller 13.

The first pneumatic device 18 is configured to selectively command movement of the first support sled 15 and the first cutting tray 14 mounted thereon in both directions.

The second cutting disc 19 is arranged coplanar with the first cutting disc 14 and is located in front of the second cutting disc 19 with respect to the side of the incoming material 11, i.e. on the right side in fig. 1 to 4.

The second cutting disk 19 is mounted so as to be rotatable with respect to the second supporting slider 20 about the axis 3 of rotation X, parallel to the axes 1 and X2 of rotation X. The rotation of the second cutting disc 19 (arrow F4) takes place in the same direction as the first cutting disc 14 and the feed roller 13 is commanded by any known type of driving member not shown in the figures, for example the same motor that commands the motor.

The second cutting disc 19 is smaller and sharper than the first cutting disc 14 and has, as indicated, a diameter of between about 25mm and about 100mm, a thickness S2 (fig. 8) of between about 0.5mm and about 1mm, and the peripheral cutting edge 21 has a cutting angle α2 of between about 10 ° and about 30 °, preferably about 15 ℃.

The second support slider 20 is also mounted on the fixed structure 17 (fig. 1) and is movable relative to the fixed structure 17 in a direction perpendicular to the support plane 12 between an inactive position (fig. 1 and 2), the cutting edge 21 of the second cutting disk 19 being at most about 10mm, for example about 7mm,8mm,9mm,10mm, from the upper surface of the support plane 12 and from the working position. (see fig. 3 and 4) wherein the peripheral edge 21 is positioned at a distance of about 1mm from the upper surface of the support plane 12.

Advantageously, the first cutting disc 14 and the second cutting disc 19 are thus movable individually or together with respect to the support plane 12, on which support plane 12 the material 11 to be cut is adapted to be placed, such that the distance 16, 21 between the circumferential cutting edges is selectively adjustable 12 with respect to said support plane for each cutting blade 14, 19. Depending on the material to be cut, this solution can be used flexibly.

The second pneumatic device 22 is configured to selectively command movement of the second support sled 20 and the second cutting tray 19 mounted thereon in both directions.

In the inactive position (fig. 1), the two cutting discs 14 and 19 are raised with respect to the support plane 12 and the material 11 can be fed in this direction manually or mechanically using any known means. Arrows of F2.

If the thickness of the material 11 is at most 3mm, as occurs in known cutting devices, only the first pneumatic device 18 is driven and only the first cutting disc 14 is lowered (first working position shown in fig. 2). Most advanced.

Conversely, if the material 11 has a thickness of from 3mm up to about 10mm, the second cutting disc 19 is first lowered, thereby driving the second pneumatic device 22, and subsequently the first cutting disc 14 is also lowered, thereby driving the second pneumatic device 22. The first pneumatic means 18, a second operating position is obtained, as shown in figure 3.

Again, if the material 11 has a thickness of from 3mm to a maximum of about 10mm, the second cutting disc 19 may also be lowered together with the first cutting disc 14, driving the second pneumatic device 22 and the second pneumatic device 22. At the same time, the first pneumatic means 18 also attains the second operating position shown in fig. 3 in this variant.

In this second working position, the material 11 advances in the direction of arrow F2 towards the first cutting disc 14 before it encounters the first cutting disc 14 and encounters the second cutting disc 19, thanks to its very sharp peripheral edge 21, just like a scalpel would cut the material 11. Immediately thereafter, the first cutting disc 14 completes the cutting of the material 11, easily entering the same incision made by the second cutting disc 19.

In this way, the material 11 is perfectly and completely cut, even with a thickness of 3mm to a maximum of about 10 mm.

Fig. 4 shows a third working position of the cutting device 10, in which the second cutting disc 19 is still lowered, while the first cutting disc 14 has been returned to its inactive position raised with respect to the support plane 12.

It has to be pointed out that even though the production costs are somewhat higher than for the known cutting device with only one cutting disc, the cutting device 10 can still obtain a very high cutting efficiency and can be operated even due to the second cutting disc 19. At a much higher cutting speed than the known devices, the costs of the cutting operation are thus greatly reduced. Furthermore, the cutting device 10 also increases the average life of the tool due to our above explanation.

The above-described embodiments are illustrative of the present utility model and are not intended to be limiting, and it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the spirit and scope of the present utility model as defined by the appended claims and their equivalents.

Claims (3)

1. A plastic web cutting apparatus, comprising:

A first cutting disk sharpened along its peripheral edge and rotated about a first axis of rotation;

At least one second cutting disk sharpened along its peripheral edge and rotated about a second axis of rotation;

Wherein a second cutting disc is arranged in front of and coplanar with the first cutting disc with respect to the plastic web, wherein the first and second cutting discs are movable with respect to a support plane or with respect to which the plastic web to be cut is placed, the first and second cutting discs being selectively adjustable with respect to the support plane.

2. The plastic web cutting apparatus of claim 1, wherein:

The second cutting disc is sharper than the first cutting disc.

3. A plastic web cutting apparatus as claimed in claim 2, wherein:

The first cutting disc having a first diameter, a first thickness and a first cutting angle, and wherein the second cutting disc has a second diameter, a second thickness and a second cutting angle;

The first diameter is between about 50mm and about 150mm, the first thickness is between 1.5mm-3mm, and the first cutting angle is between 60 deg. -120 deg., the second diameter is between 25mm and 100mm, the second thickness is between 0.5mm and 1mm, and the second cutting angle is between about 10 deg. -30 deg..