CN219597657U - Plastic bottle slitting equipment - Google Patents

Abstract

The utility model relates to the technical field of plastic bottle recycling and slitting equipment, in particular to plastic bottle slitting equipment which comprises a stretching and shaping roller assembly, a squeeze roller assembly and a slitting knife roller assembly which are sequentially arranged in the advancing direction of materials, wherein the stretching and shaping roller assembly and the squeeze roller assembly are driven by a belt pulley; the device also comprises a first driving device connected with the belt pulley and a second driving device connected with the slitting knife roller assembly. The utility model aims to overcome the defects of poor slitting effect and irregular shape of the slit plastic strips of the conventional plastic bottle recycling slitting device, and can fully flatten and flatten the plastic bottles, the slit plastic strips have regular shape, the slitting quality is good, the efficiency is high, and the obtained slitting materials are convenient for subsequent plastic strip screening and collecting treatment.

Description

Plastic bottle slitting equipment

Technical Field

The utility model relates to the technical field of plastic bottle recycling and slitting equipment, in particular to plastic bottle slitting equipment.

Background

The plastic bottle cannot be degraded naturally in nature, and can not be decomposed for hundreds of years, thousands of years or even tens of thousands of years, at present, the plastic bottle or some plastic products are recycled in the world and then are processed, manufactured and reused, so that on one hand, ecological pollution of plastics can be relieved, and on the other hand, recycling of resources is facilitated. The plastic bottles are generally recycled by firstly classifying the plastic bottles, and carrying out the processing procedures of cleaning, label removal, crushing, sorting and the like on the classification to make the plastic bottles become raw materials again for recycling. The existing empty plastic bottle cutting and recycling device mainly can cut plastic bottles, reduces the volume ratio of the empty plastic bottles to the maximum extent, damages rebound resilience of the empty plastic bottles, can treat granular, massive or strip plastic garbage, is convenient for later transportation treatment, and recycling materials in different shapes can be better utilized in different recycling purposes.

The device for cutting plastic bottles comprises a pair of extrusion rollers arranged at the uppermost end, wherein the extrusion rollers rotate towards the middle and pierce by nails at the outer ends of the extrusion rollers to drive the plastic bottles to pass through a middle gap, the extrusion rollers are extruded into flat shapes so as to facilitate the subsequent cutting of the plastic bottles, the extruded flat plastic bottles fall onto two cutting rollers at the bottom, and annular blades staggered at the outer ends of the two cutting rollers rotate towards the middle at the same time to drive the extruded plastic bottles to pass through and extrude and shear the extruded plastic bottles through the middle meshing parts, so that the extruded plastic bottles can be cut into strip-shaped plastic at one time, and the working efficiency is greatly improved.

For example, for the plastic bottle slitting equipment, the plastic bottle feeding materials have different complex shapes, the phenomena of bending and folding may exist, the plastic bottle is easy to fold and squeeze in the flattening process, the plastic bottle is not completely flattened after being flattened, the plastic bottle which is folded and flattened in the subsequent slitting process has poor cutting effect, the plastic bottle which is slit in the folding state has a plurality of cutting edge scraps and fragments, the shape of the cut plastic strip is irregular, and the like, so that the slit material is not beneficial to the subsequent further screening, cleaning and collecting.

Disclosure of Invention

The utility model aims to overcome the defects of poor slitting effect and irregular shape of a slit plastic strip of the conventional plastic bottle recycling slitting device and provides plastic bottle slitting equipment. The plastic bottle can be fully flattened and flattened, the plastic strips after being cut are regular in shape, the quality and the efficiency of the cut strips are good, and the obtained cut strips are convenient for the subsequent plastic strip screening and collecting treatment.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a plastic bottle slitting device comprises a stretching shaping roller assembly, a squeeze roller assembly and a slitting knife roller assembly which are sequentially arranged in the advancing direction of materials, wherein the stretching shaping roller assembly and the squeeze roller assembly are driven by a belt pulley; the first driving device is connected with the belt pulley, and the second driving device is connected with the slitting knife roller assembly;

the stretching shaping roller assembly comprises a first driving roller and a first driven roller, the axes of the first driving roller and the first driven roller are parallel to each other, the shaft ends of the first driving roller and the first driven roller are driven by gears and rotate in opposite directions, a gap between the first driving roller and the first driven roller is a first passing gap, and a feeding end is arranged above the first passing gap;

the extrusion roller assembly comprises a second driving roller and a second driven roller, the axes of which are parallel to each other, the shaft ends of the second driving roller and the second driven roller are driven by gears and rotate in opposite directions, the gap between the second driving roller and the second driven roller is a second passing gap, and the shaft ends of the second driving roller and the first driving roller are driven by pulleys; the first through gap is larger than the second through gap;

the slitting knife roller assembly comprises a driving knife roller and a driven knife roller, the axes of the driving knife roller and the driven knife roller are parallel to each other, the driving knife roller and the driven knife roller are in meshed rotation in opposite directions through gear transmission, the driving knife roller is connected with a second driving device, and a discharging end is arranged below the driving knife roller and the driven knife roller.

The utility model realizes the shape flattening and further flattening of the folded and deformed plastic bottles through the stretching shaping roller assemblies and the extruding roller assemblies with different passing gaps, specifically drives the belt pulley to drive the belt pulley to rotate through the first driving device, and the plastic bottles are involved in and pass through the first passing gap by friction force and traction force under the opposite rotation of the first driving roller and the first driven roller after being conveyed from the conveying belt of the previous primary screening process, in the process, if the plastic bottle with folding deformation is gradually unfolded in the pulling passing process and flattened to a certain extent, the flattened plastic bottle enters a second passing gap, the second passing gap is smaller than the first passing gap, and when the plastic bottle in the first step is already flattened and flattened to a certain extent and enters a second passing gap with a smaller gap, the plastic bottle is more easily rolled into the second passing gap by the opposite rotation of a second driving roller and a second driven roller, and after passing through the second passing gap, the plastic bottle is fully flattened, so that a better cutting condition is provided for the next step of slitting; the flattened plastic bottle enters the slitting knife roller assembly, the driving knife roller and the driven knife roller are meshed and rotated in opposite directions, the plastic bottle is cut into plastic strips with the same width as that of a knife head of the knife roller, and the plastic strips fall out from a discharge end and can be transferred to the next working procedure. The plastic bottle is initially flattened and flattened in the whole process, and then is fully flattened, compared with the traditional flattening process, the plastic bottle can be fully flattened and fully flattened, good cutting conditions are created for the cutting process, the cut plastic bottle strips reduce folding and irregular cutting scraps, the screening and collection of the subsequent process are facilitated, and the cutting quality of the plastic bottle is improved; meanwhile, due to secondary flattening, the flattening device has larger adaptability to plastic bottles with different hardness and different shapes, cannot be in place as the traditional flattening device, has smaller set passing clearance, and can not be smoothly pulled into the clearance to be extruded by some folded or larger-hardness plastic bottles, so that the plastic bottles can be piled up above a roller set to roll to cause piling.

Further, still include the mount pad, tensile plastic roller assembly, squeeze roll subassembly and slitting knife roller assembly are from last vertical installing down on the mount pad in proper order, and first drive arrangement and second drive arrangement erect in the both sides of mount pad.

Further, the device also comprises a first installation side plate which is arranged on the periphery of the stretching shaping roller assembly and the extruding roller assembly in a surrounding mode and used for being fixedly installed, and a second installation side plate which is arranged on the periphery of the slitting knife roller assembly in a surrounding mode and used for being fixedly installed. Through first installation curb plate and second installation curb plate for each roller set forms working interval, prevents that the plastic bottle from dropping when making things convenient for the entering of plastic bottle, ensures cutting operation safety simultaneously.

Further, a discharging hopper communicated with the discharging end is further arranged on the mounting seat.

Further, a strip-shaped screen is arranged between the discharging hopper and the discharging end. It should be noted that, the gap width of the strip-shaped screen can be set according to the requirement, and the strip-shaped screen can be used for carrying out certain regularity on the stacking direction of the plastic strips after the cut plastic strips fall down, so that the plastic strips collected below are more orderly arranged.

Further, the surfaces of the first driving roller and the first driven roller are uniformly provided with a plurality of clusters of steel wire brushes, and the tail end of each cluster of steel wire brushes is provided with a certain taper. The friction force between the plurality of steel wire brushes can be increased and the bottle body is improved, on one hand, the surface of the plastic bottle is flattened better, on the other hand, label paper on the surface of the plastic bottle can be removed in advance, dirt on the surface of the bottle body is loosened under the action of friction force, and the cleaning of subsequent procedures is facilitated.

Further, the arc-shaped flow dividing plate is arranged below the first passing gap, and the outer arch surface of the arc-shaped flow dividing plate is opposite to the first passing gap.

Further, a plurality of protruding abrasive particles are uniformly distributed on the outer arch surface of the arc-shaped flow distribution plate. The arc flow distribution plate plays a flow distribution role on the plastic bottle passing through extrusion, meanwhile, the plastic bottle is scraped to the convex abrasive particles on the surface of the arc flow distribution plate under the stretching of traction force, label paper on the surface of the bottle body is further removed, and meanwhile, the plastic bottle can be distributed and guided to the next procedure without being excessively piled in the middle.

Further, a plurality of strip-shaped grooves penetrating through the end surfaces of the two ends are uniformly formed in the outer peripheral surfaces of the second driving roller and the second driven roller, and the opening positions of the strip-shaped grooves of the second driving roller and the second driven roller are opposite when the second driving roller and the second driven roller rotate to the second passing gap in the opposite direction. It should be noted that, since the hardness of the bottle cap is much larger for the bottle body, extruding the bottle cap and the bottle body to the same thickness is problematic for the second driving roller and the second driven roller: if the bottle cap is to be flattened, the interval of the second through gap can only be increased, and the interval of the second through gap is too large, so that the flattening effect on the bottle body is not ideal, the subsequent slitting effect of the bottle body is affected, if the flattening effect on the bottle body is to be ensured, the interval of the second through gap needs to be controlled in a smaller range, and the bottle cap is hard, the smaller through gap can cause the bottle cap to be clamped between rollers, so that the rollers lose conveying capacity and the equipment is blocked; therefore, through seting up the bar groove, can satisfy the passing through of bottle lid, the roll surface interval outside the bar groove also can guarantee the extrusion effect of body, is difficult to appear the dead trouble of card, and flattens the effect excellently.

Further, the first driving device and the second driving device are servo motors.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The plastic bottle flattening and flattening device has the advantages that the plastic bottle is flattened and flattened initially in the whole process and then flattened fully, compared with the traditional flattening process, the plastic bottle flattening device has the advantages that the plastic bottle flattening and flattening device can be flattened fully, good cutting conditions are created for the cutting process, the folded and irregularly cut plastic bottle strips are reduced, the screening and collecting of the follow-up process are facilitated, and the cut plastic bottle strip quality is improved.

(2) The utility model has larger adaptability to plastic bottles with different hardness and different shapes due to secondary flattening, and is not in place like the traditional flattening device, and the utility model can overcome the current situation that the plastic bottles can be stacked up and rolled over the extrusion roller due to the fact that the preset passing clearance is smaller, and some folded or harder plastic bottles can not be smoothly pulled into the clearance to be extruded, and the flattening and flattening operation of more complex plastic bottles can be applied.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of another view of the present utility model;

FIG. 3 is a schematic view of the internal construction of the present utility model;

FIG. 4 is a cross-sectional view taken at C-C of FIG. 1;

fig. 5 is a partial enlarged view at B in fig. 4.

The graphic indicia are illustrated as follows:

the drawing and shaping device comprises a drawing and shaping roller assembly, a first driving roller, a first driven roller, a first passing gap, a 14-arc-shaped splitter plate, a 2-extrusion roller assembly, a second driving roller, a second driven roller, a second passing gap, a 24-strip groove, a 3-strip cutting knife roller assembly, a 31-driving knife roller, a 32-driven knife roller, a 4-belt pulley, a 5-first driving device, a 6-second driving device, an 8-mounting seat, a 81-blanking hopper, a 82-strip screen, a 83-first mounting side plate and a 84-second mounting side plate.

Detailed Description

The utility model is further described below in connection with the following detailed description. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

Example 1

As shown in fig. 1 to 3, the plastic bottle slitting equipment comprises a stretching shaping roller assembly 1, a squeeze roller assembly 2 and a slitting knife roller assembly 3 which are sequentially arranged in the advancing direction of materials, wherein the stretching shaping roller assembly 1 and the squeeze roller assembly 2 are driven by a belt pulley 4; also comprises a first driving device 5 connected with the belt pulley 4 and a second driving device 6 connected with the slitting knife roller assembly 3;

as shown in fig. 4, the stretch shaping roller assembly 1 includes a first driving roller 11 and a first driven roller 12 with axes parallel to each other, shaft ends of the first driving roller 11 and the first driven roller 12 are driven by gears and rotate in opposite directions, a gap between the first driving roller 11 and the first driven roller 12 is a first passing gap 13, and a feeding end is arranged above the first passing gap 13;

as shown in fig. 4 and 5, the squeeze roller assembly 2 includes a second driving roller 21 and a second driven roller 22 whose axes are parallel to each other, the shaft ends of the second driving roller 21 and the second driven roller 22 are driven by gears and rotated in opposite directions, a gap between the second driving roller 21 and the second driven roller 22 is a second passing gap 23, and the shaft ends of the second driving roller 21 and the first driving roller 11 are driven by a pulley 4; the first through gap 13 is larger than the second through gap 23;

as shown in fig. 4, the slitting knife roller assembly 3 includes a driving knife roller 31 and a driven knife roller 32 with axes parallel to each other, the driving knife roller 31 and the driven knife roller 32 are meshed and rotated in opposite directions through gear transmission, the driving knife roller 31 is connected with the second driving device 6, and a discharge end is arranged below the driving knife roller 31 and the driven knife roller 32.

It should be noted that, the types of plastic bottles recovered in life are complex, and most of shapes are deformed and folded and deformed in the transportation process, in this embodiment, the folded and deformed plastic bottles are flattened and further flattened by the stretching shaping roller assembly 1 and the squeeze roller assembly 2 with different passing gaps, specifically, the first driving device 5 drives the belt pulley 4 to drive the stretching shaping roller assembly 1 and the squeeze roller assembly 2 to rotate, after the plastic bottles are conveyed from the conveying belt of the previous primary screening process to the feeding end and fall into the first passing gap 13, the plastic bottles are rolled into and pass through the first passing gap 13 by friction force and traction force under the opposite rotation of the first driving roller 11 and the first driven roller 12, in this process, if the folded and deformed plastic bottles are gradually flattened in the process of traction passing through, the flattened plastic bottles enter the second passing gap 23 with a certain degree, the second passing gap 23 is smaller than the first passing gap 13, and then the flattened plastic bottles enter the second passing gap 23 with a certain degree, and then the second driving roller 21 and the second passing gap 23 are easily rolled into the second passing gap, and the flattened bottles are cut, and the condition is fully provided after the second passing through the second passing gap 23 is cut; the flattened plastic bottle enters the slitting knife roller assembly 3, the driving knife roller 31 and the driven knife roller 32 are meshed and rotated in opposite directions, the plastic bottle is cut into plastic strips with the same width as that of a knife head cut by the knife roller, and the plastic strips fall out from a discharge end and can be transferred to the next process.

In the embodiment, the plastic bottle is initially flattened and flattened in the whole process and then fully flattened, compared with the traditional flattening process, the plastic bottle can be fully flattened and fully flattened, good cutting conditions are created for the cutting process, the cut plastic bottle strips reduce folding and irregular cutting scraps, the screening and collection of the subsequent process are facilitated, and the cutting quality of the plastic bottle is improved; meanwhile, due to secondary flattening, the plastic bottles with different hardness and different shapes are more adaptive, the plastic bottles cannot be flattened in place as in the traditional flattening device, the set passing clearance is smaller, some folded or harder plastic bottles cannot be smoothly pulled into the clearance to be extruded, the plastic bottles can be piled up above the roller set to roll to cause piling up, and the plastic bottle flattening device can overcome the difficulties and is suitable for flattening and flattening operations of more complex plastic bottles.

As shown in fig. 1 to 2, the drawing and shaping roller assembly 1, the squeeze roller assembly 2 and the slitting knife roller assembly 3 are sequentially and vertically arranged on the mounting seat 8 from top to bottom, the first driving device 5 and the second driving device 6 are erected on two sides of the mounting seat 8, and a discharging hopper 81 communicated with a discharging end is further arranged on the mounting seat 8.

As shown in fig. 2, the drawing and shaping roller assembly further includes a first mounting side plate 83 which is provided around the drawing and shaping roller assembly 1 and the squeeze roller assembly 2 and is used for fixing and mounting, and a second mounting side plate 84 which is provided around the slitting knife roller assembly 3 and is used for fixing and mounting. Through first installation curb plate 83 and second installation curb plate 84 for each roller set forms the working interval, prevents that the plastic bottle from dropping when making things convenient for the entering of plastic bottle, ensures cutting operation safety simultaneously.

As shown in fig. 3 and 4, a strip screen 82 is further provided between the discharge hopper 81 and the discharge end. It should be noted that

The gap width of the strip-shaped screen 82 can be set according to the requirement, the strip-shaped screen 82 can regulate the stacking direction of the plastic strips after the cut plastic 5 strips fall down, so that the plastic strips collected below are arranged more

Adding the materials in order.

In this embodiment, a plurality of steel wire brushes are uniformly distributed on the surfaces of the first driving roller 11 and the first driven roller 12, and the tail end of each steel wire brush has a certain taper. The plurality of clusters of steel wire hairbrushes are arranged to enlarge the bottle body

The friction force between the two surfaces of the plastic bottle can be flattened better on one hand, and label paper on the surface 0 of the plastic bottle can be removed in advance on the other hand, dirt on the surface of the bottle body is loosened under the action of friction force, so that the back is convenient

And (5) cleaning the subsequent steps.

Example 2

This embodiment is similar to embodiment 1, except that in this embodiment:

as shown in fig. 4, an arc-shaped splitter plate 14 is further arranged below the first through gap 13, and the outer arch surface of the arc-shaped splitter plate 145 faces the first through gap 13.

In this embodiment, the outer arch surface of the arc-shaped splitter plate 14 is also uniformly provided with a plurality of protruding abrasive particles.

The arc flow distribution plate 14 plays the flow distribution effect on the plastic bottle passing through the extrusion, meanwhile, the plastic bottle is scraped and rubbed towards the convex abrasive particles on the surface of the arc flow distribution plate 14 under the stretching of traction force, label paper on the surface of the bottle body is further removed, and meanwhile, the plastic bottle can be distributed and guided to the next procedure without being excessively piled in the middle.

0 as shown in fig. 5, the outer peripheral surfaces of the second driving roller 21 and the second driven roller 22 are uniformly provided with a plurality of through holes

The strip grooves 24 on the end surfaces of the two ends, and the strip grooves 24 of the second driving roller 21 and the second driven roller 22 are opposite to each other when they are rotated to the second passing gap 23. Since the hardness of the bottle cap is much higher for the bottle body, the bottle cap and the bottle body are pressed to the same thickness for the second driving roller 21 and the second driving roller

The driven roller 22 has problems: if the cap is to be flattened, the spacing of the second passage gap 235 can be increased, and the spacing of the second passage gap 23 is too large, the flattening effect on the body is not ideal,

affecting the subsequent slitting effect of the bottle body, if the flattening effect of the bottle body is to be ensured, the distance between the second through gaps 23 needs to be controlled within a smaller range, and the smaller through gaps can cause the bottle cap to be clamped between rollers because of harder bottle cap, so that the rollers lose conveying capacity and the equipment is blocked; thus, by providing the slot 24,

can satisfy the passing of bottle lid, the roll surface interval outside the bar groove 24 also can guarantee the extrusion effect of body, 0 is difficult to appear the dead trouble of card, and flattens the effect excellent.

Other structures and principles of this embodiment are the same as those of embodiment 1.

Example 3

This embodiment is similar to embodiment 1, except that in this embodiment: the first driving device 5 and the second driving device 6 are servo motors.

Other structures and principles of this embodiment are the same as those of embodiment 1.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The plastic bottle slitting equipment is characterized by comprising a stretching shaping roller assembly (1), a squeeze roller assembly (2) and a slitting knife roller assembly (3) which are sequentially arranged in the advancing direction of materials, wherein the stretching shaping roller assembly (1) and the squeeze roller assembly (2) are driven by a belt pulley (4); the slitting knife assembly also comprises a first driving device (5) connected with the belt pulley (4) and a second driving device (6) connected with the slitting knife roller assembly (3);

the stretching and shaping roller assembly (1) comprises a first driving roller (11) and a first driven roller (12) with axes parallel to each other, the shaft ends of the first driving roller (11) and the first driven roller (12) are driven by gears and rotate in opposite directions, a gap between the first driving roller (11) and the first driven roller (12) is a first passing gap (13), and a feeding end is arranged above the first passing gap (13);

the extrusion roller assembly (2) comprises a second driving roller (21) and a second driven roller (22) with axes parallel to each other, the shaft ends of the second driving roller (21) and the second driven roller (22) are driven by gears and rotate oppositely, a gap between the second driving roller (21) and the second driven roller (22) is a second passing gap (23), and the shaft ends of the second driving roller (21) and the first driving roller (11) are driven by a belt pulley (4); the first through gap (13) is larger than the second through gap (23);

the slitting knife roller assembly (3) comprises a driving knife roller (31) and a driven knife roller (32) with axes parallel to each other, the driving knife roller (31) and the driven knife roller (32) are in meshed rotation in opposite directions through gear transmission, the driving knife roller (31) is connected with the second driving device (6), and a discharging end is arranged below the driving knife roller (31) and the driven knife roller (32).

2. The plastic bottle slitting equipment according to claim 1, further comprising a mounting seat (8), wherein the stretching and shaping roller assembly (1), the squeeze roller assembly (2) and the slitting knife roller assembly (3) are sequentially and vertically mounted on the mounting seat (8) from top to bottom, and the first driving device (5) and the second driving device (6) are erected on two sides of the mounting seat (8).

3. The plastic bottle slitting machine as set forth in claim 2, further comprising a first mounting side plate (83) surrounding the stretch-shaping roller assembly (1) and the squeeze roller assembly (2) and for fixed mounting, and a second mounting side plate (84) surrounding the slitting knife roller assembly (3) and for fixed mounting.

4. A plastic bottle slitting apparatus according to claim 2, wherein the mounting base (8) is further provided with a blanking hopper (81) communicating with the discharge end.

5. A plastic bottle slitting apparatus according to claim 4, wherein a strip screen (82) is further provided between the hopper (81) and the discharge end.

6. The plastic bottle slitting machine according to claim 1, wherein the surfaces of the first driving roller (11) and the first driven roller (12) are uniformly provided with a plurality of clusters of steel wire brushes, and the tail end of each cluster of steel wire brushes has a certain taper.

7. A plastic bottle slitting apparatus according to claim 1, wherein an arc-shaped flow dividing plate (14) is further provided below the first passing gap (13), and an outer arch surface of the arc-shaped flow dividing plate (14) is opposite to the first passing gap (13).

8. The plastic bottle slitting machine as set forth in claim 7, wherein the outer arcuate surface of the arcuate splitter plate (14) is further uniformly provided with a plurality of raised abrasive particles.

9. The plastic bottle slitting machine as set forth in claim 1, wherein the outer peripheral surfaces of the second driving roller (21) and the second driven roller (22) are uniformly provided with a plurality of strip grooves (24) penetrating through the end surfaces of both ends, and the opening positions of the strip grooves (24) of the second driving roller (21) and the second driven roller (22) are opposite when the second driving roller and the second driven roller rotate to the second passing gap (23) in opposite directions.

10. A plastic bottle slitting machine according to claim 1, wherein the first drive means (5) and the second drive means (6) are servo motors.