CN210824761U

CN210824761U - Cutting device of plastic film cutting machine

Info

Publication number: CN210824761U
Application number: CN201921555061.9U
Authority: CN
Inventors: 赵钢
Original assignee: Baoding Tongchuang Plastic Manufacturing Co Ltd
Current assignee: Baoding Tongchuang Plastic Manufacturing Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-06-23
Anticipated expiration: 2029-09-18

Abstract

The utility model relates to the technical field of auxiliary devices for plastic film production, in particular to a cutting device of a plastic film cutting machine, which comprises a supporting plate, a cutter, a bottom plate, a left fixing plate, a right fixing plate, a left screw and a right screw; still include two sets of preceding connecting rods, two sets of back connecting rods, punch holder, two sets of preceding branch, two sets of back branch, ball bearing, screwed pipe, threaded rod, lower plate, mounting panel, preceding fixed plate, limiting plate, after-fixing board, motor, pivot, fixed axle, reel, two sets of preceding inserted bars, two sets of back inserted bars and plastic film, the utility model discloses a device is decided to plastic film guillootine, the position removal takes place in the reducible plastic film cutting process, improves plastic film cutting quality.

Description

Cutting device of plastic film cutting machine

Technical Field

The utility model relates to a plastic film production auxiliary device's technical field especially relates to a device is decided to plastic film guillootine.

Background

As is well known, a cutting device of a plastic film cutting machine is a device for cutting a plastic film into plastic films with the same two widths in the production process of the plastic film, and is widely used in the field of plastic film production; the cutting device of the existing plastic film cutting machine comprises a supporting plate, a cutter, a bottom plate, a left fixing plate, a right fixing plate, a left screw and a right screw, wherein the top end and the bottom end of the supporting plate are respectively connected with the central areas of the bottom surface of the cutter and the top surface of the bottom plate; when the cutting device of the existing plastic film cutting machine is used, a worker pulls the plastic film to enable the cutter to penetrate through the central area of the plastic film, and the cutter cuts the plastic film into a front section of plastic film and a rear section of plastic film in the process of pulling the plastic film rightwards; the existing cutting device of the plastic film cutting machine is found in use that the plastic film is easy to move in position when a worker pulls the plastic film, so that the plastic film cutting fracture is easy to be uneven, and the plastic film cutting quality is reduced.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a device is decided to plastic film guillootine that reducible plastic film cutting in-process takes place the position and removes, improves plastic film cutting quality.

The cutting device of the plastic film cutting machine of the utility model comprises a supporting plate, a cutter and a bottom plate, the left fixing plate and the right fixing plate are longitudinally provided with a first round hole and a second round hole respectively, the positions of the top surface of the bottom plate, which correspond to the first round hole and the second round hole, are provided with a first round groove and a second round groove respectively, the inner side walls of the first round groove and the second round groove are provided with inner threads corresponding to the left screw and the right screw respectively, and the bottom end of the left screw and the bottom end of the right screw respectively penetrate through the first round hole and the second round hole and are fixed in the first round groove and the second round groove in a screwing mode; the novel screw thread pipe is characterized by further comprising two groups of front connecting rods, two groups of rear connecting rods, an upper clamping plate, two groups of front supporting rods, two groups of rear supporting rods, ball bearings, a threaded pipe, a threaded rod, a lower clamping plate, a mounting plate, a front fixing plate, a limiting plate, a rear fixing plate, a motor, a rotating shaft, a fixing shaft, a winding drum, two groups of front insertion rods, two groups of rear insertion rods and a plastic film, wherein the rear ends of the two groups of front connecting rods are respectively connected with the front left half area and the front right half area of the upper clamping plate, the front ends of the two groups of rear connecting rods are respectively connected with the rear left half area and the rear right half area of the upper clamping plate, the top ends of the two groups of front supporting rods and the top ends of the two groups of rear supporting rods are respectively connected with the front half area of the bottom surfaces of the two groups of front connecting rods, a third circular groove is arranged in the, threaded rod top and lower plate bottom surface central zone are connected, the mounting panel is connected with preceding first half regional down of preceding fixed plate at the back, and preceding fixed plate bottom surface and bottom plate top surface right half regional contact, and bottom plate top surface right half regional is provided with first rectangle recess, and the mounting panel vertically is provided with the rectangular hole, the limiting plate bottom passes the rectangular hole and inserts first rectangle recess, the back plate bottom surface is connected with bottom plate top surface right side rear side, motor demountable installation is at the preceding first half regional of preceding fixed plate, the pivot front end passes preceding fixed plate first half regional and is connected with motor rear end output, pass the first half regional of back plate behind the fixed axle, the preceding first half region of left side of reel and right half regional two sets of fourth circular recesses that are provided with respectively, the reel is provided with two sets of fifth circular recesses respectively at the back first half region of left side and right half regional, two sets of preceding inserted bar rear ends and two sets of back inserted bar front ends insert two sets of fourth circular recesses and the groove, two sets of preceding inserted bar front ends and two sets of back inserted bar rear ends are connected with pivot back and fixed axle respectively, the plastic film passes upper plate and lower plate clearance and twines on the reel.

The utility model discloses a device is decided to plastic film guillootine still includes left connecting block and right connecting block, left side connecting block bottom and right connecting block bottom respectively with half regional and half regional connection on the right side on the left side of limiting plate top surface.

The utility model discloses a device is decided to plastic film guillootine still includes roller bearing, multiunit lower roll bearing, gyro wheel and multiunit lower roll wheel on multiunit, upper plate bottom surface and lower plate top surface are provided with second rectangle recess and third rectangle recess respectively, roller bearing rear end and multiunit lower roll bearing rear end pass multiunit upper roll central zone and multiunit lower roll central zone respectively, and roller bearing front end and rear end are connected with antetheca and interior back wall in the second rectangle recess respectively on the multiunit, and antetheca and interior back wall connection in multiunit lower roll bearing front end and the rear end respectively and the third rectangle recess, and gyro wheel and multiunit lower roll wheel are outstanding upper plate bottom surface and lower plate top surface respectively on the multiunit.

The utility model discloses a device is decided to plastic film guillootine still includes left cardboard and right cardboard, and the right front side of bottom plate top surface is provided with fourth rectangle recess and fifth rectangle recess, fourth rectangle recess and fifth rectangle recess are inserted respectively to left side cardboard bottom and right cardboard bottom, and left cardboard top and right cardboard top are connected with the left half region in front fixed plate bottom surface and the right half region on the right side respectively.

The utility model discloses a device is decided to plastic film guillootine still includes the arm-tie, the arm-tie is connected with the preceding central zone of preceding fixed plate at the back.

The utility model discloses a device is decided to plastic film guillootine, the arm-tie top surface is provided with sixth rectangle recess.

The utility model discloses a device is decided to plastic film guillootine still includes the baffle, the fixed axle rear end is connected with the preceding central zone of baffle.

The utility model discloses a device is decided to plastic film guillootine still includes the backing plate, the backing plate is connected with preceding second region of preceding fixed plate at the back, and the contact of motor bottom and backing plate top surface.

Compared with the prior art, the beneficial effects of the utility model are that: the plastic film passes through the gap between the upper clamping plate and the lower clamping plate, the threaded pipe is rotated, the bottom end of the threaded pipe rotates in the ball bearing, relative rotation occurs between the threaded pipe and the threaded rod, the threaded rod is screwed out of or into the threaded pipe from the threaded pipe, the height of the lower clamping plate is increased or reduced, the lower clamping plate and the upper clamping plate act together, the upper clamping plate and the lower clamping plate clamp and fix the plastic film from the upper side and the lower side respectively, the motor drives the rotating shaft to rotate, the rotating shaft drives the winding drum to rotate through the two groups of front insertion rods, the winding drum drives the fixed shaft to rotate through the two groups of rear insertion rods, the fixed shaft rotates on the rear fixed plate, the rear fixed plate plays a supporting role on the winding drum through the fixed shaft, when the winding drum rotates, the winding drum drives the plastic film to be wound on the winding drum continuously, the cutter cuts the, improve plastic film cutting quality, in the cutter use, when needs are changed the cutter, all take off left screw and right screw from the spiral shell dress on the bottom plate, change the cutter can, when winding plastic film is more on the spool, take out the limiting plate in first rectangle recess, remove preceding fixed plate forward for inserted bar and two sets of back inserted bar all take out from the reel before two sets of, change new reel can, easy and simple to handle.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic top view of the front fixing plate, the rear fixing plate, the motor, the rotating shaft, the fixing shaft, the winding drum, the front insertion rod, the rear insertion rod and the baffle;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

FIG. 4 is a partial enlarged view of portion B of FIG. 1;

in the drawings, the reference numbers: 1. a support plate; 2. a cutter; 3. a base plate; 4. a left fixing plate; 5. a right fixing plate; 6. a left screw; 7. a right screw; 8. a front connecting rod; 9. an upper splint; 10. a front support rod; 11. a ball bearing; 12. a threaded pipe; 13. a threaded rod; 14. a lower splint; 15. mounting a plate; 16. a front fixing plate; 17. a limiting plate; 18. a rear fixing plate; 19. a motor; 20. a rotating shaft; 21. a fixed shaft; 22. a reel; 23. a front plunger; 24. a rear inserted link; 25. a plastic film; 26. a left connecting block; 27. a right connecting block; 28. an upper roller; 29. a lower roller; 30. an upper roller; 31. a lower roller; 32. a left snap gauge; 33. a right snap-gauge; 34. pulling a plate; 35. a baffle plate; 36. a backing plate.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in figures 1 to 4, the cutting device of the plastic film cutting machine of the utility model comprises a supporting plate 1, a cutter 2 and a bottom plate 3, the cutting tool comprises a left fixing plate 4, a right fixing plate 5, a left screw 6 and a right screw 7, wherein the top end and the bottom end of a supporting plate 1 are respectively connected with the bottom surface of a tool 2 and the central area of the top surface of a bottom plate 3, the right side wall of the left fixing plate 4 and the left side wall of the right fixing plate 5 are respectively connected with the lower half area of the left side wall of the supporting plate 1 and the lower half area of the right side wall of the supporting plate 1, the left fixing plate 4 and the right fixing plate 5 are respectively and longitudinally provided with a first round hole and a second round hole, the positions, corresponding to the first round hole and the second round hole, of the top surface of the bottom plate 3 are respectively provided with a first round groove and a second round groove, the inner side walls of the first round groove and the second round groove are respectively provided with internal threads corresponding to the left screw 6 and the right screw 7; the device also comprises two groups of front connecting rods 8, two groups of rear connecting rods, an upper clamping plate 9, two groups of front supporting rods 10, two groups of rear supporting rods, ball bearings 11, a threaded pipe 12, a threaded rod 13, a lower clamping plate 14, a mounting plate 15, a front fixing plate 16, a limiting plate 17, a rear fixing plate 18, a motor 19, a rotating shaft 20, a fixing shaft 21, a winding drum 22, two groups of front insertion rods 23, two groups of rear insertion rods 24 and a plastic film 25, wherein the rear ends of the two groups of front connecting rods 8 are respectively connected with the left half area and the right half area in front of the upper clamping plate 9, the front ends of the two groups of rear connecting rods are respectively connected with the left half area and the right half area in rear of the upper clamping plate 9, the top ends of the two groups of front supporting rods 10 and the two groups of rear connecting rods are respectively connected with the front half area on the bottom surface of the two groups of front connecting rods 8, a third circular groove is, the bottom end of a threaded rod 13 is screwed and inserted into a threaded pipe 12, the top end of the threaded rod 13 is connected with the central area of the bottom surface of a lower clamping plate 14, the back surface of a mounting plate 15 is connected with the lower half area of the front surface of a front fixing plate 16, the bottom surface of the front fixing plate 16 is contacted with the right half area of the top surface of a bottom plate 3, the right half area of the top surface of the bottom plate 3 is provided with a first rectangular groove, the mounting plate 15 is longitudinally provided with a rectangular hole, the bottom end of a limiting plate 17 passes through the rectangular hole and is inserted into the first rectangular groove, the bottom surface of a back fixing plate 18 is connected with the right back side of the top surface of the bottom plate 3, a motor 19 is detachably mounted on the upper half area of the front surface of the front fixing plate 16, the front end of a rotating shaft 20 passes through the upper half area of the front fixing plate 16 and is connected with the output end of the motor 19, the rear ends of the two groups of front insertion rods 23 and the front ends of the two groups of rear insertion rods 24 are respectively inserted into the two groups of fourth circular grooves and the two groups of fifth circular grooves, the front ends of the two groups of front insertion rods 23 and the rear ends of the two groups of rear insertion rods 24 are respectively connected with the rear surface of the rotating shaft 20 and the front surface of the fixed shaft 21, and the plastic film 25 penetrates through the gap between the upper clamping plate 9 and the lower clamping plate 14 and is wound on the winding drum 22; the plastic film passes through the gap between the upper clamping plate and the lower clamping plate, the threaded pipe is rotated, the bottom end of the threaded pipe rotates in the ball bearing, relative rotation occurs between the threaded pipe and the threaded rod, the threaded rod is screwed out of or into the threaded pipe from the threaded pipe, the height of the lower clamping plate is increased or reduced, the lower clamping plate and the upper clamping plate act together, the upper clamping plate and the lower clamping plate clamp and fix the plastic film from the upper side and the lower side respectively, the motor drives the rotating shaft to rotate, the rotating shaft drives the winding drum to rotate through the two groups of front insertion rods, the winding drum drives the fixed shaft to rotate through the two groups of rear insertion rods, the fixed shaft rotates on the rear fixed plate, the rear fixed plate plays a supporting role on the winding drum through the fixed shaft, when the winding drum rotates, the winding drum drives the plastic film to be wound on the winding drum continuously, the cutter cuts the, improve plastic film cutting quality, in the cutter use, when needs are changed the cutter, all take off left screw and right screw from the spiral shell dress on the bottom plate, change the cutter can, when winding plastic film is more on the spool, take out the limiting plate in first rectangle recess, remove preceding fixed plate forward for inserted bar and two sets of back inserted bar all take out from the reel before two sets of, change new reel can, easy and simple to handle.

The utility model discloses a plastic film guillootine cutting device still includes left connecting block 26 and right connecting block 27, and left connecting block 26 bottom and right connecting block 27 bottom are connected with limiting plate 17 top surface left half region and right half region respectively; limiting plate is conveniently taken to left connecting block and right connecting block, improves and uses the flexibility.

The utility model discloses a plastic film guillootine cutting device, still include multiunit upper roll axle 28, multiunit lower roll axle 29, multiunit upper roller 30 and multiunit lower roller 31, upper plate 9 bottom surface and lower plate 14 top surface are provided with second rectangle recess and third rectangle recess respectively, multiunit upper roll axle 28 rear end and multiunit lower roll axle 29 rear end pass multiunit upper roller 30 central zone and multiunit lower roller 31 central zone respectively, multiunit upper roll axle 28 front end and rear end are connected with second rectangle recess inner front wall and inner rear wall respectively, multiunit lower roll axle 29 front end and rear end are connected with third rectangle recess inner front wall and inner rear wall respectively, multiunit upper roll axle 30 and multiunit lower roller 31 are outstanding upper plate 9 bottom surface and lower plate 14 top surface respectively; when the plastic film moved along the clearance between punch holder and the lower plate to the right, the plastic film drove gyro wheel and multiunit lower roller rotatory on the multiunit for gyro wheel and multiunit lower roller rotate along roller bearing and multiunit lower roller bearing on the multiunit respectively, become the rolling friction between plastic film and punch holder and the lower plate of multiunit and between gyro wheel and the multiunit lower roller wheel, reduce the wearing and tearing of plastic film, improve the use rationality.

The utility model discloses a plastic film guillootine cutting device still includes left cardboard 32 and right cardboard 33, and bottom plate 3 top surface right front side is provided with fourth rectangle recess and fifth rectangle recess, and fourth rectangle recess and fifth rectangle recess are inserted respectively to left cardboard 32 bottom and right cardboard 33 bottom, and left cardboard 32 top and right cardboard 33 top are connected with the left half region and the right half region of front fixed plate 16 bottom surface respectively; when moving the front fixed plate forward, the front fixed plate drives left cardboard and right cardboard to slide forward in fourth rectangle recess and fifth rectangle recess respectively, improves the stability in use of front fixed plate.

The cutting device of the plastic film cutting machine of the utility model also comprises a pulling plate 34, and the back of the pulling plate 34 is connected with the central area in front of the front fixing plate 16; the front fixing plate is convenient to pull forwards by the pull plate, and the use flexibility is improved.

The utility model discloses a plastic film guillootine cutting device, the top surface of the pulling plate 34 is provided with a sixth rectangular groove; the staff can insert the sixth rectangle recess of arm-tie top surface with the finger, is convenient for operate the arm-tie.

The utility model also comprises a baffle 35, the rear end of the fixed shaft 21 is connected with the central area in front of the baffle 35; when the fixed shaft rotates on the rear fixing plate, the baffle is clamped behind the rear fixing plate, the fixed shaft is prevented from falling off from the rear fixing plate, and the use stability is improved.

The utility model discloses a cutting device of plastic film cutting machine, which also comprises a backing plate 36, the back of the backing plate 36 is connected with the lower area in front of the front fixing plate 16, and the bottom end of the motor 19 is contacted with the top surface of the backing plate 36; when the connection between the motor and the front fixing plate is unstable, the base plate supports the motor, and the use stability of the motor is improved.

The utility model discloses a plastic film guillootine cutting device, it is at the during operation, the plastic film passes the clearance between punch holder and the lower plate, the screwed pipe rotates, the screwed pipe bottom is rotatory in ball bearing, take place relative rotation between screwed pipe and the threaded rod, make the threaded rod revolve out or screw in the screwed pipe from the screwed pipe, thereby heighten or reduce the height of lower plate, make lower plate and punch holder combined action, punch holder and lower plate clamp the plastic film from upside and downside respectively and clamp fixedly, turn on the motor, the motor drives the pivot rotation, the rotatory pivot drives the reel rotation through two sets of front inserted bars, the reel drives the fixed axle rotation through two sets of back inserted bars, the fixed axle rotates on the back fixed plate, the back fixed plate plays the supporting role to the reel through the fixed axle, when the reel rotates, the reel drives the plastic film to wind on the reel, when the plastic film constantly winds on the reel, the plastic film cutting machine comprises a base plate, a cutter, a limiting plate, a front fixing plate, a winding drum, a cutter, a left screw, a right screw, a left screw, a right screw, a; the limiting plates are convenient to take from the left connecting block and the right connecting block, and the use flexibility is improved; when the material film moves rightwards along the gap between the upper clamping plate and the lower clamping plate, the plastic film drives the multiple groups of upper rollers and the multiple groups of lower rollers to rotate, so that the multiple groups of upper rollers and the multiple groups of lower rollers rotate along the multiple groups of upper rolling shafts and the multiple groups of lower rolling shafts respectively, the sliding friction between the plastic film and the upper clamping plate and between the plastic film and the lower clamping plate is changed into the rolling friction between the plastic film and the multiple groups of upper rollers and between the plastic film and the multiple groups of lower rollers, the abrasion of the plastic; when the front fixing plate is moved forwards, the front fixing plate drives the left clamping plate and the right clamping plate to slide forwards in the fourth rectangular groove and the fifth rectangular groove respectively, so that the use stability of the front fixing plate is improved; the pulling plate is convenient for pulling the front fixing plate forwards, so that the use flexibility is improved; a worker can insert fingers into the sixth rectangular groove on the top surface of the pulling plate, so that the pulling plate is convenient to operate; when the fixed shaft rotates on the rear fixed plate, the baffle is clamped behind the rear fixed plate, so that the fixed shaft is prevented from falling off from the rear fixed plate, and the use stability is improved; when the connection between the motor and the front fixing plate is unstable, the base plate supports the motor, and the use stability of the motor is improved.

The utility model discloses used motor purchase in the market, according to the service instruction of wearing with use can.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A cutting device of a plastic film cutting machine comprises a supporting plate (1), a cutter (2), a bottom plate (3), a left fixing plate (4), a right fixing plate (5), a left screw (6) and a right screw (7), wherein the top end and the bottom end of the supporting plate (1) are respectively connected with the bottom surface of the cutter (2) and the central area of the top surface of the bottom plate (3), the right side wall of the left fixing plate (4) and the left side wall of the right fixing plate (5) are respectively connected with the lower half area of the left side wall and the lower half area of the right side wall of the supporting plate (1), the left fixing plate (4) and the right fixing plate (5) are respectively provided with a first round hole and a second round hole in the longitudinal direction, the positions of the top surface of the bottom plate (3) corresponding to the first round hole and the second round hole are respectively provided with a first round groove and a second round groove, the inner side wall of the first round groove, the bottom end of the left screw (6) and the bottom end of the right screw (7) respectively penetrate through the first round hole and the second round hole and are fixedly screwed in the first round groove and the second round groove; it is characterized by also comprising two groups of front connecting rods (8), two groups of rear connecting rods, an upper clamping plate (9), two groups of front supporting rods (10), two groups of rear supporting rods, a ball bearing (11), a threaded pipe (12), a threaded rod (13), a lower clamping plate (14), a mounting plate (15), a front fixing plate (16), a limiting plate (17), a rear fixing plate (18), a motor (19), a rotating shaft (20), a fixing shaft (21), a winding drum (22), two groups of front inserting rods (23), two groups of rear inserting rods (24) and a plastic film (25), wherein the rear ends of the two groups of front connecting rods (8) are respectively connected with the front left half area and the front right half area of the front surface of the upper clamping plate (9), the front ends of the two groups of rear connecting rods are respectively connected with the rear left half area and the rear half area of the upper clamping plate (9), the top ends of the two groups of front supporting, the left half area of the top surface of the bottom plate (3) is provided with a third circular groove, the ball bearing (11) is arranged in the third circular groove, the bottom end of the threaded pipe (12) is inserted into the ball bearing (11) and is connected with the ball bearing in an interference fit manner, the bottom end of the threaded rod (13) is screwed and inserted into the threaded pipe (12), the top end of the threaded rod (13) is connected with the central area of the bottom surface of the lower clamping plate (14), the back surface of the mounting plate (15) is connected with the front lower half area of the front fixing plate (16), the bottom surface of the front fixing plate (16) is contacted with the right half area of the top surface of the bottom plate (3), the right half area of the top surface of the bottom plate (3) is provided with a first rectangular groove, the mounting plate (15) is longitudinally provided with a rectangular hole, the bottom end of the limiting plate (17) penetrates through the rectangular hole and is inserted into the first, the motor (19) is detachably arranged at the upper front half area of the front fixed plate (16), the front end of the rotating shaft (20) penetrates through the upper half area of the front fixing plate (16) and is connected with the output end of the rear end of the motor (19), the rear part of the fixed shaft (21) passes through the upper half area of the rear fixing plate (18), the left half area and the right half area in front of the winding drum (22) are respectively provided with two groups of fourth circular grooves, the left half area and the right half area in rear of the winding drum (22) are respectively provided with two groups of fifth circular grooves, the rear ends of the two groups of front inserted rods (23) and the front ends of the two groups of rear inserted rods (24) are respectively inserted into the two groups of fourth circular grooves and the two groups of fifth circular grooves, the front ends of the two groups of front inserted rods (23) and the rear ends of the two groups of rear inserted rods (24) are respectively connected with the rear of the rotating shaft (20) and the front of the fixed shaft (21), the plastic film (25) passes through the gap between the upper clamping plate (9) and the lower clamping plate (14) and is wound on the winding drum (22).

2. The cutting device of the plastic film cutting machine according to claim 1, further comprising a left connecting block (26) and a right connecting block (27), wherein the bottom end of the left connecting block (26) and the bottom end of the right connecting block (27) are respectively connected to the left half area and the right half area of the top surface of the limiting plate (17).

3. The cutting device of plastic film cutting machine according to claim 2, further comprising a plurality of sets of upper rollers (28), a plurality of sets of lower rollers (29), a plurality of sets of upper rollers (30) and a plurality of sets of lower rollers (31), the bottom surface of the upper splint (9) and the top surface of the lower splint (14) are respectively provided with a second rectangular groove and a third rectangular groove, the rear ends of the upper rollers (28) and the rear ends of the lower rollers (29) respectively penetrate through the central areas of the upper rollers (30) and the lower rollers (31), the front ends and the rear ends of the upper rollers (28) are respectively connected with the inner front wall and the inner rear wall of the second rectangular groove, the front ends and the rear ends of the lower rollers (29) are respectively connected with the inner front wall and the inner rear wall of the third rectangular groove, and the upper rollers (30) and the lower rollers (31) respectively protrude out of the bottom surface of the upper clamping plate (9) and the top surface of the lower clamping plate (14).

4. The cutting device of the plastic film cutting machine as claimed in claim 3, further comprising a left clamping plate (32) and a right clamping plate (33), wherein a fourth rectangular groove and a fifth rectangular groove are formed on the right front side of the top surface of the bottom plate (3), the bottom end of the left clamping plate (32) and the bottom end of the right clamping plate (33) are respectively inserted into the fourth rectangular groove and the fifth rectangular groove, and the top end of the left clamping plate (32) and the top end of the right clamping plate (33) are respectively connected with the left half area and the right half area of the bottom surface of the front fixing plate (16).

5. The cutting device of plastic film cutting machine according to claim 4, further comprising a pulling plate (34), wherein the rear face of the pulling plate (34) is connected to the front central region of the front fixing plate (16).

6. The cutting device of plastic film cutting machine according to claim 5, wherein the top surface of the pulling plate (34) is provided with a sixth rectangular groove.

7. The cutting device of plastic film cutting machine according to claim 6, further comprising a baffle plate (35), wherein the rear end of the fixed shaft (21) is connected to a central area in front of the baffle plate (35).

8. The cutting device of the plastic film cutting machine according to claim 7, further comprising a pad plate (36), wherein the rear surface of the pad plate (36) is connected to the lower half area of the front surface of the front fixing plate (16), and the bottom end of the motor (19) is in contact with the top surface of the pad plate (36).