CN220864095U - Plastic bag cutting mechanism - Google Patents

Abstract

The utility model discloses a plastic bag cutting mechanism, which comprises: the plastic bag cutting machine is characterized in that a through groove is formed in the top of the plastic bag cutting machine, a lifting plate is arranged above the through groove, a lower pressing plate is fixedly arranged at the bottom of the lifting plate, a groove communicated with the through groove is formed in the bottom of the lower pressing plate, and an elastic rubber layer is symmetrically and fixedly arranged at the bottom of the lower pressing plate; the rectangular groove is formed on one side of the plastic bag cutting machine and is positioned below the through groove, and the bottom of the lifting plate is fixedly provided with a cylinder; the rotary knob is rotated by hand, so that the rotary knob drives the threaded rod to rotate in the threaded hole, and the threaded rod can be moved out of the threaded hole under the action of the threads, thereby being convenient for people to replace the cutting blade.

Description

Plastic bag cutting mechanism

Technical Field

The application belongs to the technical field of plastic bags, and particularly relates to a plastic bag cutting mechanism.

Background

The plastic bag is made of plastic (common plastic comprises polypropylene, purple ester, nylon and the like) as a main raw material, is an indispensable article in daily life, and is often used for containing other articles. The plastic bag is widely used because of the advantages of low cost, light weight, large capacity and convenient storage, in the manufacturing process, two layers of single-layer films are rewound into double-layer films, the rewound double-layer films are cut into small plastic sheets, and the plastic sheets are subjected to hot pressing in the later period, so that the conventional plastic bag which is a common plastic bag is an indispensable plastic bag in daily life of people.

The cutting blade in the existing plastic bag cutting machine is used for cutting from top to bottom, the cutting blade can be propped against the surface of the plastic bag cutting machine, the cutting blade can cause the edge to become blunt after long-term use, and the cutting blade is positioned on the inner wall of the plastic bag cutting machine, so that the blunt cutting blade is difficult to replace. In view of this, we propose a plastic bag cutting mechanism.

Disclosure of utility model

The application aims to ensure that the upper end of the cutting blade is positioned between the two elastic rubber layers and the through groove, the cutting edge of the cutting blade is not contacted with any part, and the cutting edge of the cutting blade is not damaged when the cutting blade is used for a long time; the rotary knob is rotated by hand, so that the rotary knob drives the threaded rod to rotate in the threaded hole, and the threaded rod can be moved out of the threaded hole under the action of the threads, thereby being convenient for people to replace the cutting blade.

In order to achieve the above purpose, the present application adopts the following technical scheme: a plastic bag cutting mechanism comprising:

The plastic bag cutting machine is characterized in that a through groove is formed in the top of the plastic bag cutting machine, a lifting plate is arranged above the through groove, a lower pressing plate is fixedly arranged at the bottom of the lifting plate, a groove communicated with the through groove is formed in the bottom of the lower pressing plate, and an elastic rubber layer is symmetrically and fixedly arranged at the bottom of the lower pressing plate;

The rectangular groove is formed in one side of the plastic bag cutting machine and is positioned below the through groove, a cylinder is fixedly arranged at the bottom of the lifting plate, the lower end of the cylinder penetrates through the top of the plastic bag cutting machine and extends into the rectangular groove, the lower end of the cylinder is rotatably provided with a movable plate which is inclined, and a spring is arranged on the cylinder and positioned between the lifting plate and the plastic bag cutting machine;

The disc is positioned in the rectangular groove, a fixed rod is fixedly arranged at one side of the disc and close to the edge of the disc, and one end of the fixed rod penetrates through the movable plate;

The fixed column is fixedly arranged in the plastic bag cutting machine, a movable groove is formed in the fixed column, a sliding block is slidably arranged in the movable groove, a plurality of threaded holes are formed in one side of the sliding block, a cutting knife is arranged at one end of each threaded hole, the upper end of each cutting knife penetrates through the corresponding through groove, a threaded rod is arranged in each threaded hole in a threaded mode, and one end of each threaded rod penetrates through each cutting knife and is fixedly provided with a rotary button;

The rotating wheel is rotatably arranged in the movable groove and positioned at one side of the sliding block, a belt is fixedly arranged on the rotating wheel, and one end of the belt is tightly adhered to the sliding block;

the elastic component is positioned in the movable groove and used for pulling the sliding block to displace;

The power assembly is positioned in the plastic bag cutting machine and is used for driving the rotating wheel and the disc to rotate positively and negatively.

Preferably, the length and the width of the through groove are equal to those of the groove, the cylinder is in sliding connection with the plastic bag cutting machine, and the fixed rod is in rotary connection with the movable plate.

Preferably, the upper and lower both sides of the movable groove are provided with limit grooves, and limit blocks fixed with the sliding blocks are slidably arranged in the limit grooves.

Preferably, the elastic assembly includes:

The plurality of tension spring grooves are formed in the inner wall of the movable groove, tension springs are fixedly arranged in the tension spring grooves, and one ends of the tension springs are tightly welded with the sliding blocks.

Preferably, the diameter of the tension spring is smaller than the diameter of the tension spring groove, and the number of the tension spring grooves is at least 4.

Preferably, the power assembly includes:

The bearing plate is fixedly arranged in the plastic bag cutting machine and is positioned below the fixed column;

The motor is fixedly arranged at the top of the bearing plate, and an output shaft of the motor penetrates through one side of the plastic bag cutting machine and is coaxially connected with the disc;

The limiting column is fixedly arranged in the plastic bag cutting machine and positioned at one side of the motor, the connecting column is rotatably arranged in the limiting column, and the second gear and the third gear are respectively and fixedly arranged at two ends of the connecting column;

The first gear is fixedly arranged on an output shaft of the motor and positioned at one side of the second gear;

The gear IV is positioned at the top of the gear III, a rotating column is fixedly arranged at the top of the gear IV, and the upper end of the rotating column penetrates through the bottom of the fixed column and is coaxially connected with the rotating wheel.

Preferably, the output shaft of the motor is rotationally connected with the plastic bag cutting machine, and the rotating column is rotationally connected with the fixed column.

Preferably, the first gear is meshed with the second gear, and the third gear is meshed with the fourth gear.

The beneficial effects are that:

1. When the plastic bag on the plastic bag cutting machine needs to be cut, the plastic bag can be placed between the through groove and the lower pressing plate; then let power component drive disc and runner forward rotation together, afterwards, the disc passes through the lower extreme downward sloping of dead lever drive fly leaf and drives the cylinder and move downwards, at this moment, the cylinder can stimulate the lifter plate and move downwards, the lifter plate can extrude the spring shrink and let the holding down plate extrude the plastic bag on the plastic bag cutting machine through the elastic rubber layer, make recess and logical groove align, simultaneously, runner forward pivoted in-process can make the belt twine on the runner, and the one end of belt drives the slider and moves to the direction of runner, simultaneously, the elastic component can be elongated by the slider, until the slider passes through a plurality of threaded rods and drives the cutting knife and move between recess and logical groove and cut off the plastic bag that will be pushed down by the elastic rubber layer extrusion, because the upper end of cutting blade is located between two elastic rubber layers and the logical groove, and cutting blade's cutting edge does not contact with any part, ensure that cutting blade's cutting edge can not take place the damage when using for a long time.

2. The rotary knob is rotated by hand, so that the rotary knob drives the threaded rod to rotate in the threaded hole, and the threaded rod can be moved out of the threaded hole under the action of the threads, thereby being convenient for people to replace the cutting blade.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application. In the drawings:

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

FIG. 2 is a second schematic diagram of the overall structure of the present utility model;

FIG. 3 is a schematic cross-sectional view of a plastic bag cutter according to the present utility model;

FIG. 4 is a schematic view of a region structure of a lifter plate according to the present utility model;

FIG. 5 is a schematic view showing the internal structure of the fixing column according to the present utility model;

FIG. 6 is a schematic view of a partial explosion in the present utility model;

FIG. 7 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;

fig. 8 is a schematic cross-sectional view of a fixing post according to the present utility model.

In the figure: 1. a plastic bag cutting machine; 11. a through groove; 12. rectangular grooves; 2. a lifting plate; 21. a lower pressing plate; 22. a groove; 3. a cylinder; 31. a movable plate; 32. a spring; 4. a disc; 41. a fixed rod; 5. fixing the column; 51. a movable groove; 52. a tension spring groove; 53. a tension spring; 54. a limit groove; 6. a slide block; 61. a threaded hole; 62. a limiting block; 7. a cutting knife; 71. a threaded rod; 72. a rotation knob; 8. a rotating wheel; 81. a belt; 9. a motor; 91. a first gear; 92. a second gear; 93. a connecting column; 94. a third gear; 96. a fourth gear; 97. rotating the column; 98. a carrying plate; 99. and a limit column.

Detailed Description

The present application is described in further detail below with reference to fig. 1-8.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.

The embodiment of the application discloses a plastic bag cutting mechanism, which comprises:

The plastic bag cutting machine 1, the top of the plastic bag cutting machine 1 is provided with a through groove 11, a lifting plate 2 is arranged above the through groove 11, the bottom of the lifting plate 2 is fixedly provided with a lower pressing plate 21, the bottom of the lower pressing plate 21 is provided with a groove 22 communicated with the through groove 11, and the bottom of the lower pressing plate 21 is symmetrically and fixedly provided with an elastic rubber layer;

A rectangular groove 12, wherein the rectangular groove 12 is arranged on one side of the plastic bag cutting machine 1 and is positioned below the through groove 11, a cylinder 3 is fixedly arranged at the bottom of the lifting plate 2, the lower end of the cylinder 3 penetrates through the top of the plastic bag cutting machine 1 and extends into the rectangular groove 12, a movable plate 31 which is inclined is rotatably arranged at the lower end of the cylinder 3, and a spring 32 is arranged on the cylinder 3 and positioned between the lifting plate 2 and the plastic bag cutting machine 1;

The disc 4 is positioned in the rectangular groove 12, one side of the disc 4 is fixedly provided with a fixed rod 41 near the edge of the disc 4, and one end of the fixed rod 41 penetrates through the movable plate 31;

The fixed column 5 is fixedly arranged in the plastic bag cutting machine 1, a movable groove 51 is formed in the fixed column 5, a sliding block 6 is slidably arranged in the movable groove 51, a plurality of threaded holes 61 are formed in one side of the sliding block 6, a cutting knife 7 is arranged at one end of each threaded hole 61, the upper end of each cutting knife 7 penetrates through the corresponding through groove 11, a threaded rod 71 is arranged in each threaded hole 61 in a threaded manner, and one end of each threaded rod 71 penetrates through each cutting knife 7 and is fixedly provided with a rotary button 72;

The rotating wheel 8 is rotatably arranged in the movable groove 51 and positioned at one side of the sliding block 6, a belt 81 is fixedly arranged on the rotating wheel 8, and one end of the belt 81 is tightly adhered to the sliding block 6;

The elastic component is positioned in the movable groove 51 and is used for pulling the sliding block 6 to displace;

The power assembly is positioned in the plastic bag cutting machine 1 and is used for driving the rotating wheel 8 and the disc 4 to rotate positively and negatively.

Based on the structure, through the power assembly and the elastic assembly, the power assembly drives the disc 4 and the rotating wheel 8 to reversely rotate together, then, the disc 4 drives the fixed rod 41 to rotate upwards, the fixed rod 41 drives the lower end of the movable plate 31 to move upwards, at the moment, the spring 32 is in rebound extension and presses the lifting plate 2 to move upwards, the lifting plate 2 also drives the lower pressing plate 21 and the cylinder 3 to move upwards together, meanwhile, when the rotating wheel 8 reversely rotates, the belt 81 on the rotating wheel 8 is in a loose state, the elastic assembly automatically pulls the sliding block 6 to move in the movable groove 51 and away from the rotating wheel 8, and meanwhile, the sliding block 6 drives the cutting knife 7 to move through the threaded rods 71;

When the plastic bag on the plastic bag cutting machine 1 needs to be cut, the plastic bag can be placed between the through groove 11 and the lower pressing plate 21; then the power assembly drives the disc 4 and the rotating wheel 8 to rotate positively, then the disc 4 drives the lower end of the movable plate 31 to move obliquely downwards and drives the cylinder 3 to move downwards through the fixed rod 41, at the moment, the cylinder 3 pulls the lifting plate 2 to move downwards, the lifting plate 2 can squeeze the spring 32 to shrink and the lower pressure plate 21 to squeeze the plastic bag on the plastic bag cutting machine 1 through the elastic rubber layer, so that the groove 22 is aligned with the through groove 11, meanwhile, the belt 81 is wound on the rotating wheel 8 in the forward rotating process of the rotating wheel 8, one end of the belt 81 drives the sliding block 6 to move towards the rotating wheel 8, and meanwhile, the elastic assembly can be lengthened by the sliding block 6 until the sliding block 6 drives the cutting knife 7 to move between the groove 22 and the through groove 11 through a plurality of threaded rods 71 and cuts off the plastic bag pressed by the elastic rubber layer, and the upper end of the cutting knife 7 is positioned between the two elastic rubber layers and the through groove 11, and the cutting edge of the cutting knife 7 is not contacted with any part, so that the cutting edge of the cutting knife 7 is prevented from being damaged in long-term use;

the rotation knob 72 is rotated by hand, so that the rotation knob 72 drives the threaded rod 71 to rotate in the threaded hole 61, and under the action of the threads, the threaded rod 71 can be moved out of the threaded hole 61, thereby being convenient for people to replace the cutting knife 7.

In one embodiment, the length and width of the through groove 11 and the groove 22 are equal, the cylinder 3 is slidingly connected with the plastic bag cutter 1, and the fixed rod 41 is rotatably connected with the movable plate 31.

Specifically, it is ensured that the cylinder 3 can be normally moved up and down on the plastic bag cutter 1, and the fixed rod 41 can be rotated in the movable plate 31.

In this embodiment, it is ensured that the upper end of the cutter 7 is located between the two elastic rubber layers and the through groove 11, and the blade of the cutter 7 is not in contact with any part, thereby avoiding dulling of the blade of the cutter 7.

In one embodiment, the upper and lower sides of the movable slot 51 are provided with a limiting slot 54, and a limiting block 62 fixed with the sliding block 6 is slidably mounted in the limiting slot 54.

Specifically, when the slider 6 moves in the movable slot 51, the slider 6 also drives the stopper 62 to move in the stopper slot 54.

In this embodiment, it is ensured that the slider 6 does not fall off in the movable groove 51, and the structural stability of the slider 6 is ensured.

In one embodiment, the elastic assembly includes:

The plurality of tension spring grooves 52 are formed in the inner wall of the movable groove 51, tension springs 53 are fixedly arranged in the plurality of tension spring grooves 52, and one ends of the tension springs 53 are tightly welded with the sliding blocks 6.

Specifically, the structural stability of the tension springs 53 is ensured, and when the slider 6 approaches the rotating wheel 8, the tension springs 53 are elongated and generate a large tension.

In this embodiment, when the rotating wheel 8 rotates reversely, the belt 81 on the rotating wheel 8 is in a loose state, and the plurality of tension springs 53 generate a larger tension force to pull the slider 6 to move in the movable slot 51 and away from the rotating wheel 8 until the tension springs 53 are retracted into the tension spring slots 52, and at this time, the slider 6 drives the cutting knife 7 to move through the plurality of threaded rods 71.

In one embodiment, the diameter of the tension spring 53 is smaller than the diameter of the tension spring groove 52, and the number of tension spring grooves 52 is at least 4.

In this embodiment, it is ensured that a plurality of tension springs 53 can provide enough tension to pull the slider 6 to move in the movable groove 51, and that the tension springs 53 can be retracted into the tension spring grooves 52.

In one embodiment, a power assembly includes:

The bearing plate 98, the bearing plate 98 is fixedly installed in the plastic bag cutting machine 1 and is positioned below the fixed column 5;

The motor 9, the motor 9 is fixedly installed on the top of the bearing plate 98, and the output shaft of the motor 9 penetrates one side of the plastic bag cutting machine 1 and is coaxially connected with the disc 4;

The limiting column 99 is fixedly arranged in the plastic bag cutting machine 1 and positioned on one side of the motor 9, the connecting column 93 is rotatably arranged in the limiting column 99, and the gear II 92 and the gear III 94 are respectively and fixedly arranged at two ends of the connecting column 93;

The first gear 91 is fixedly arranged on the output shaft of the motor 9 and positioned on one side of the second gear 92;

The gear IV 96, the gear IV 96 is located the top of gear IV 94, and the top fixed mounting of gear IV 96 has the rotation post 97, and the upper end of rotation post 97 runs through the bottom of fixed column 5 and with runner 8 coaxial coupling.

In this embodiment, when the disc 4 and the rotating wheel 8 are driven by the power component to rotate reversely, the motor 9 needs to be started first, and the disc 4 and the gear one 91 are driven by the output shaft of the motor 9 to rotate reversely, at this time, the disc 4 can move up together with the lifting plate 2 and the lower pressing plate 21 through the cooperation of the fixed rod 41, the movable plate 31, the cylinder 3 and the spring 32, so that the plastic bag can be conveniently put on the plastic bag cutting machine 1 again; meanwhile, the first gear 91 drives the second gear 92 to rotate reversely, the second gear 92 drives the third gear 94 to rotate reversely through the connecting post 93, the third gear 94 drives the fourth gear 96 to rotate reversely, and the fourth gear 96 drives the rotating wheel 8 to rotate reversely through the rotating post 97.

In one of the embodiments, the output shaft of the motor 9 is rotatably connected to the plastic bag cutter 1, and the rotation post 97 is rotatably connected to the fixed post 5.

In this embodiment, the motor 9 is ensured to work normally on the bearing plate 98, and the rotating column 97 can rotate normally in the forward direction or in the reverse direction in the fixed column 5.

In one embodiment, gear one 91 is meshed with gear two 92 and gear three 94 is meshed with gear four 96.

Specifically, it is ensured that gear one 91 can drive gear two 92 to rotate in the forward or reverse direction, and gear three 94 can drive gear four 96 to rotate in the forward or reverse direction.

It should be noted that the cutting edge of the cutter 7 is in an inclined structure, so that the cutting edge of the cutter 7 is ensured not to contact any part;

It is worth noting that the elastic rubber layer has larger elasticity, when the lower pressing plate 21 is extruded on the elastic rubber layer and the elastic rubber layer is extruded on the plastic bag, the elastic rubber layer can generate larger deformation, so that the lower pressing plate 21 can be downwards moved in the moving process of the cutting knife 7, and the normal operation of the whole device is ensured.

When the plastic bag cutting mechanism of the embodiment is used, when the sliding block 6 is far away from the rotating wheel 8 and is contacted with one end of the tension spring groove 52, firstly, a plastic bag is placed between the through groove 11 and the lower pressing plate 21 and is positioned on the plastic bag cutting machine 1, then, the motor 9 is started, the output shaft of the motor 9 drives the disc 4 and the gear I91 to rotate positively, then, the disc 4 drives the lower end of the movable plate 31 to move obliquely downwards and drives the cylinder 3 to move downwards through the fixed rod 41, at the moment, the cylinder 3 pulls the lifting plate 2 to move downwards, the lifting plate 2 can compress the spring 32 to shrink and the lower pressing plate 21 presses the plastic bag on the plastic bag cutting machine 1 through the elastic rubber layer, and the groove 22 is aligned with the through groove 11;

Meanwhile, the first gear 91 drives the second gear 92 to rotate positively, the second gear 92 drives the third gear 94 to rotate positively through the connecting column 93, the third gear 94 drives the fourth gear 96 to rotate positively, the fourth gear 96 drives the rotating wheel 8 to rotate positively through the rotating column 97, the belt 81 is wound on the rotating wheel 8 in the forward rotating process of the rotating wheel 8, one end of the belt 81 drives the sliding block 6 to move towards the rotating wheel 8, meanwhile, the sliding block 6 drives the cutting knife 7 to move between the two elastic rubber layers and the through groove 11 through the plurality of threaded rods 71 and cuts off a plastic bag pressed by the elastic rubber layers, and the plurality of tension springs 53 are stretched by the sliding block 6 and generate larger tension.

Since the upper end of the cutter 7 is located between the two elastic rubber layers and the through groove 11, and the blade of the cutter 7 is not in contact with any part, it is ensured that the blade of the cutter 7 is not damaged when used for a long time.

The rotation knob 72 is rotated by hand, so that the rotation knob 72 drives the threaded rod 71 to rotate in the threaded hole 61, and under the action of the threads, the threaded rod 71 can be moved out of the threaded hole 61, thereby being convenient for people to replace the cutting knife 7.

Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the application and is not intended to limit the scope of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (8)

1. A plastic bag cutting mechanism, comprising:

The plastic bag cutting machine (1), a through groove (11) is formed in the top of the plastic bag cutting machine (1), a lifting plate (2) is arranged above the through groove (11), a lower pressing plate (21) is fixedly arranged at the bottom of the lifting plate (2), a groove (22) communicated with the through groove (11) is formed in the bottom of the lower pressing plate (21), and an elastic rubber layer is symmetrically and fixedly arranged at the bottom of the lower pressing plate (21);

The rectangular groove (12), the rectangular groove (12) is formed in one side of the plastic bag cutting machine (1) and is positioned below the through groove (11), a cylinder (3) is fixedly arranged at the bottom of the lifting plate (2), the lower end of the cylinder (3) penetrates through the top of the plastic bag cutting machine (1) and extends into the rectangular groove (12), a movable plate (31) which is inclined is rotatably arranged at the lower end of the cylinder (3), and a spring (32) is arranged on the cylinder (3) and positioned between the lifting plate (2) and the plastic bag cutting machine (1);

The disc (4) is positioned in the rectangular groove (12), a fixed rod (41) is fixedly arranged at one side of the disc (4) and close to the edge of the disc, and one end of the fixed rod (41) penetrates through the movable plate (31);

The fixed column (5), fixed column (5) fixed mounting is in plastic bag cutting machine (1), movable groove (51) has been seted up in fixed column (5), slidable mounting has slider (6) in movable groove (51), a plurality of screw holes (61) have been seted up to one side of slider (6), one end of screw hole (61) is equipped with cutting knife (7), and the upper end of cutting knife (7) runs through logical groove (11), threaded hole (61) internal thread installation has threaded rod (71), and one end of threaded rod (71) runs through cutting knife (7) and fixed mounting has swivel button (72);

The rotating wheel (8) is rotatably arranged in the movable groove (51) and positioned at one side of the sliding block (6), a belt (81) is fixedly arranged on the rotating wheel (8), and one end of the belt (81) is tightly adhered to the sliding block (6);

the elastic component is positioned in the movable groove (51) and used for pulling the sliding block (6) to displace;

The power assembly is positioned in the plastic bag cutting machine (1) and is used for driving the rotating wheel (8) and the disc (4) to rotate positively and negatively.

2. The plastic bag cutting mechanism of claim 1, wherein: the length and the width of the through groove (11) and the groove (22) are equal, the cylinder (3) is in sliding connection with the plastic bag cutting machine (1), and the fixed rod (41) is in rotary connection with the movable plate (31).

3. The plastic bag cutting mechanism of claim 1, wherein: limiting grooves (54) are formed in the upper side and the lower side of the movable groove (51), and limiting blocks (62) fixed with the sliding blocks (6) are slidably mounted in the limiting grooves (54).

4. The plastic bag cutting mechanism of claim 1, wherein: the elastic assembly includes:

A plurality of tension spring grooves (52), a plurality of tension spring grooves (52) are all arranged on the inner wall of the movable groove (51), a plurality of tension springs (53) are fixedly arranged in the tension spring grooves (52), and one ends of the tension springs (53) are tightly welded with the sliding block (6).

5. The plastic bag cutting mechanism of claim 4, wherein: the diameter of the tension springs (53) is smaller than that of the tension spring grooves (52), and the number of the tension spring grooves (52) is at least 4.

6. The plastic bag cutting mechanism of claim 1, wherein: the power assembly includes:

the bearing plate (98), the bearing plate (98) is fixedly installed in the plastic bag cutting machine (1) and is positioned below the fixed column (5);

The motor (9) is fixedly arranged at the top of the bearing plate (98), and an output shaft of the motor (9) penetrates through one side of the plastic bag cutting machine (1) and is coaxially connected with the disc (4);

The limiting column (99), the limiting column (99) is fixedly arranged in the plastic bag cutting machine (1) and is positioned at one side of the motor (9), the connecting column (93) is rotatably arranged in the limiting column (99), and the two ends of the connecting column (93) are respectively fixedly provided with the gear II (92) and the gear III (94);

The first gear (91) is fixedly arranged on the output shaft of the motor (9) and positioned at one side of the second gear (92);

The gear IV (96), gear IV (96) are located the top of gear III (94), the top fixed mounting of gear IV (96) has rotation post (97), and the upper end of rotation post (97) runs through the bottom of fixed column (5) and with runner (8) coaxial coupling.

7. The plastic bag cutting mechanism of claim 6, wherein: the output shaft of the motor (9) is rotationally connected with the plastic bag cutting machine (1), and the rotating column (97) is rotationally connected with the fixed column (5).

8. The plastic bag cutting mechanism of claim 6, wherein: the first gear (91) is meshed with the second gear (92), and the third gear (94) is meshed with the fourth gear (96).