CN210477954U

CN210477954U - Packaging bag cutting equipment

Info

Publication number: CN210477954U
Application number: CN201921119212.6U
Authority: CN
Inventors: 周长友
Original assignee: Yongzhou Zhongsu Packaging Technology Co Ltd
Current assignee: Yongzhou Zhongsu Packaging Technology Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-05-08
Anticipated expiration: 2029-07-16

Abstract

The application relates to the field of packaging material manufacturing equipment, in particular to packaging bag cutting equipment, which comprises a rotary cutter mechanism and a rotary roller mechanism; the rotary cutter mechanism comprises a cutter holder and a blade group arranged on the cutter holder; the roller rotating mechanism comprises a roller rotating body and a cutter groove group which is arranged on the roller rotating body and corresponds to the cutter blade group; the rotary cutter mechanism and the rotary roller mechanism rotate reversely and synchronously, and when the rotary cutter mechanism and the rotary roller mechanism rotate to the position where the blade group is opposite to the blade groove group, the blade group is inserted into the blade groove group. The application provides a wrapping bag cutting equipment, through rotary cutter mechanism with the reverse synchronous rotation of commentaries on classics roller mechanism makes blade group inlays and inserts the cutting is realized during sword groove group, has promoted work efficiency, and pivoted tangential force can drive the wrapping bag simultaneously and gos forward, is convenient for realize automated production.

Description

Packaging bag cutting equipment

[ technical field ] A method for producing a semiconductor device

The application relates to packaging material manufacture equipment field especially relates to wrapping bag cutting equipment.

[ background of the invention ]

The manufacturing process of the woven packaging bag comprises wire drawing, circular weaving, film coating, punching, printing, cutting, folding, sewing, packaging and the like, for example, fig. 8 shows a cut packaging bag semi-finished product 100, after cutting, a cut mark 10, an inner folding part 20 and a folded angle part 30 are formed on the packaging bag semi-finished product 100, wherein the inner folding part 20 is folded towards the inside of the packaging bag semi-finished product 100 along the cut marks 10 arranged at intervals in the folding process, and the folded angle part 30 is folded towards the inside by 45 degrees to reinforce the strength of the packaging bag after sewing.

The current cutting process mainly performs blanking and cutting through a punching machine tool, a workpiece needs to be manually taken and placed, the working efficiency is low, and automatic production is difficult to realize.

[ summary of the invention ]

An object of this application is to provide wrapping bag cutting equipment, through rotary cutter mechanism with the reverse synchronous rotation of commentaries on classics roller mechanism makes blade group inlays and inserts the cutting is realized during sword groove group, has promoted work efficiency, and pivoted tangential force can drive the wrapping bag simultaneously and gos forward, is convenient for realize automated production.

The application is realized by the following technical scheme:

the packaging bag cutting equipment comprises a rotary cutter mechanism and a rotary roller mechanism;

the rotary cutter mechanism comprises a cutter holder and a blade group arranged on the cutter holder;

the roller rotating mechanism comprises a roller rotating body and a cutter groove group which is arranged on the roller rotating body and corresponds to the cutter blade group;

the rotary cutter mechanism and the rotary roller mechanism rotate reversely and synchronously, and when the rotary cutter mechanism and the rotary roller mechanism rotate to the position where the blade group is opposite to the blade groove group, the blade group is inserted into the blade groove group.

The packaging bag cutting device comprises a blade set and a blade set, wherein the blade set comprises a first blade, a middle blade set and a fifth blade which are arranged side by side at intervals;

the first blade comprises a first transverse cutting part and a first vertical cutting part which is vertically intersected and connected with the first transverse cutting part;

the fifth blade comprises a fifth transverse cutting part and a fifth vertical cutting part, and the fifth vertical cutting part and the fifth transverse cutting part are arranged at intervals and are perpendicular to each other;

the set of intermediate blades is aligned with the first and fifth crosscuts;

the first vertical cutting portion is located on one side close to the middle blade set, and the fifth vertical cutting portion is located on one side far away from the middle blade set.

The packaging bag cutting device comprises a first blade, a second blade and a third blade, wherein the first blade, the second blade and the third blade are arranged in parallel at intervals.

According to the packaging bag cutting device, the cutting edges of the blade set are comb-tooth-shaped.

According to the packaging bag cutting device, the material for forming the knife groove group is plastic.

According to the packaging bag cutting equipment, the cutter holder is provided with the heating device for heating the blade group.

According to the packaging bag cutting equipment, the rotary cutter mechanism comprises a cutter driving device for driving the cutter holder to rotate;

the roller mechanism comprises a roller driving device for driving the roller body to rotate.

The packaging bag cutting equipment further comprises a fragment collecting device, wherein the fragment collecting device comprises a blanking hole, a material guiding pipe, an exhaust fan and a material collecting cage;

the blanking hole is formed below the rotary roller body;

the first end of the material guiding pipe is communicated with the blanking hole;

one end of the exhaust fan is connected with the material guiding pipe, and the other end of the exhaust fan is connected with the material collecting cage, so that fragments generated by cutting are sucked into the material collecting cage through the material guiding pipe from the material falling hole.

The packaging bag cutting equipment further comprises packaging bag conveying equipment, and the packaging bag conveying equipment comprises a conveying mechanism, a stacking conveying belt and an air blower, wherein the conveying mechanism, the stacking conveying belt and the air blower are arranged behind the rotary cutter mechanism and the rotary roller mechanism;

the conveying direction of the stacking conveying belt is inclined upwards, the front end of the stacking conveying belt is connected with the tail end of the conveying mechanism, and the tail end of the conveying mechanism is higher than the front end of the stacking conveying belt, so that when two adjacent packaging bags are conveyed to the stacking conveying belt from the conveying mechanism respectively, the two adjacent packaging bags are stacked up and down on the stacking conveying belt and conveyed backwards;

the air blower is positioned above the front portion of the stacking conveyor belt, the air outlet direction of the air blower and the conveying direction of the stacking conveyor belt form a preset angle, and therefore packaging bags conveyed by the conveying mechanism are pressed on the stacking conveyor belt.

According to the packaging bag cutting equipment, the stacking conveyor belt is provided with the elastic pressure rod, the elastic pressure rod extends from the front upper part of the stacking conveyor belt, and the tail end of the elastic pressure rod presses the conveying surface of the stacking conveyor belt;

the middle part of the elastic pressure rod is an upward convex arc, the tail end of the elastic pressure rod is a downward convex arc, and the tail end of the elastic pressure rod is tangent to the conveying surface of the stacking conveying belt.

Compared with the prior art, the method has the following advantages:

1. through rotary cutter mechanism with the reverse synchronous rotation of commentaries on classics roller mechanism makes the blade group inlays and inserts realize the cutting when sword groove group, has promoted work efficiency, and pivoted tangential force can drive the wrapping bag and move forward simultaneously, is convenient for realize automated production.

2. The comb-shaped blade can cause larger pressure when cutting, so that the cut of the packaging bag is more orderly.

3. The cutter groove group formed by the plastic has certain elasticity, so that the packaging bag can be more tightly pressed for cutting, and the blades can be better protected.

4. Can in time collect because of the piece and the piece that the cutting produced through piece collection device, guarantee site environment's clean and tidy, and relative manual work cleans labour saving and time saving more.

5. Through conveying mechanism with the cooperation of pile conveyer belt is carried, and two adjacent wrapping bags are in pile conveyer belt forms stacks from top to bottom, and the pile in advance before the pile promptly, on the other hand, through the air-blower orientation the pile conveyer belt blows the pressure, can be stable with the wrapping bag carry in order to guarantee faster conveying speed on the pile conveyer belt.

6. Through the elastic pressure rod, the packaging bag is more attached to the stacking conveying belt for conveying, and the conveying is more stable and reliable.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an embodiment of the present application;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic partial perspective view of an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a rotary cutter mechanism according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a roller mechanism according to an embodiment of the present application;

FIG. 6 is an enlarged view of the portion B of FIG. 4;

fig. 7 is a schematic view illustrating a state that two adjacent packaging bags are stacked up and down on the stacking conveyor and conveyed obliquely upwards according to the embodiment of the present application;

fig. 8 is a schematic view of a semi-finished packaging bag after a cutting process.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

As shown in fig. 1 to 7, the embodiment of the present application provides a packaging bag cutting apparatus, including a rotary cutter mechanism 8 and a rotary roller mechanism 9; the rotary cutter mechanism 8 comprises a cutter seat 81 and a blade group 82 arranged on the cutter seat 81; the roller mechanism 9 comprises a roller body 91 and a knife groove group 93 which is arranged on the roller body 91 and corresponds to the blade group 82; the rotary cutter mechanism 8 and the rotary roller mechanism 9 rotate in opposite directions synchronously, for example, when the rotary cutter mechanism 8 rotates clockwise, the rotary roller mechanism 9 rotates counterclockwise, and when the rotary cutter mechanism 8 rotates to a position where the blade group 82 is opposite to the blade groove group 93, the blade group 82 is inserted into the blade groove group 93. In particular, the rotary cutter mechanism 8 is shaped like a rectangular parallelepiped, the rotation axis is a connecting line of the centers of two opposite surfaces, one surface of the tool rest 81 is a surface parallel to the rotation axis, and the surface coincides with the surface having the tool groove group 93, so that when the rotary cutter mechanism 8 and the roller mechanism 9 rotate reversely and synchronously, the tool groove group 93 and the tool groove group 82 are continuously engaged and separated, and when the tool groove group is separated, the rotary cutter mechanism 8 and the roller mechanism 9 do not interfere with each other.

Through rotatory cutter mechanism 8 with the reverse synchronous rotation of commentaries on classics roller mechanism 9 makes blade group 82 inlays and inserts realize the cutting when the knife bank 93, has promoted work efficiency, and pivoted tangential force can drive the wrapping bag and advance simultaneously, is convenient for realize automated production.

Specifically, the blade set 82 includes a first blade 821, a middle blade set 820, and a fifth blade 825 arranged side by side at intervals; the first blade 821 includes a first cross cutting portion 8211 and a first vertical cutting portion 8212 perpendicularly intersecting and connected with the first cross cutting portion 8211 to cut a rectangular fragment from one corner of the packaging bag; the fifth blade 825 includes a fifth transverse cutting portion 8251 and a fifth vertical cutting portion 8252, and the fifth vertical cutting portion 8252 and the fifth transverse cutting portion 8251 are vertically spaced from each other to form an inner folding portion 20 and a corner folding portion 30 on the packing bag; the set of intermediate blades 820 is aligned with the first cross cut 8211 and the fifth cross cut 8251; the first vertical cut 8212 is located at a side close to the middle blade set 820, and the fifth vertical cut 8252 is located at a side far from the middle blade set 820. The middle blade group 820 comprises a second blade 822, a third blade 823 and a fourth blade 824 which are arranged side by side at intervals to cut and form a dotted line cutting mark. Correspondingly, the knife groove group 93 is provided with knife grooves corresponding to the blades in the blade group 820, and when the blade group 820 is inserted into the knife groove group 93 to complete cutting, the structure is simple, and the processing difficulty is low.

Preferably, the blade edges of the blade group 82 are comb-shaped. The comb-shaped blade can cause larger pressure when cutting, so that the cut of the packaging bag is more orderly.

Accordingly, the material forming the set of flutes 93 is plastic. The knife groove set 93 formed by the plastic has certain elasticity, so that the packaging bag can be more tightly pressed for cutting, and the blades can be better protected.

Further, a heating device for heating the blade group 82 is disposed on the blade seat 81. The heating device can adopt an electric iron, and the cut can be smoother and more orderly by softening the packaging bag through moderate heating.

In this embodiment, the rotary cutter mechanism 8 includes a cutter driving device, such as a driving motor, for driving the cutter seat 81 to rotate; the roller mechanism 9 includes a roller driving device, such as a driving motor, for driving the roller body 91 to rotate.

The packaging bag cutting equipment further comprises a fragment collecting device 1, wherein the fragment collecting device 1 comprises a blanking hole 11, a material guiding pipe 12, an exhaust fan 13 and a material collecting cage 14; the blanking hole 11 is arranged below the roller body 91, and particularly, the blanking hole 11 corresponds to the first blade 821 so that the fragments generated by cutting are sucked from the blanking hole 11 when the cutter grooves 93 of the roller body 91 rotate to the lower part; the first end of the material guiding pipe 12 is communicated with the blanking hole 11; one end of the exhaust fan 13 is connected with the material guiding pipe 12, and the other end of the exhaust fan is connected with the collecting cage 14, so that the fragments generated by cutting are sucked into the collecting cage 14 from the blanking hole 11 through the material guiding pipe 12.

Wrapping bag cutting equipment can produce a large amount of pieces and piece at the in-process of cutting, causes site work environment's dirty in disorder poor easily, can in time collect because of the piece and the piece that the cutting produced through piece collection device 1, has guaranteed site environment's clean and tidy, and cleans labour saving and time saving more relatively manually.

Wrapping bag cutting equipment still include wrapping bag conveying equipment, wrapping bag conveying equipment is including locating rotary cutter mechanism 8 with change conveying mechanism 2, pile conveyer belt 3 and the air-blower 4 in roller mechanism 9 rear.

The direction of delivery of pile conveyer belt 3 upwards slopes, the front end of pile conveyer belt 3 with conveying mechanism 2's end is connected, just conveying mechanism 2's end is higher than the front end of pile conveyer belt 3 to make two adjacent wrapping bags follow respectively conveying mechanism 2 carries extremely during the pile conveyer belt 3, two adjacent wrapping bags are in pile up the tilt up transport about pile conveyer belt 3 forms.

The air blower 4 is located above the stacking conveyor belt 3 and the air outlet direction and the conveying direction of the stacking conveyor belt 3 form a preset angle, so that the packaging bags conveyed by the conveying mechanism 2 are pressed on the stacking conveyor belt 3.

The during operation, the wrapping bag is carried pile conveyer belt 3 from conveying mechanism 2, because 3 slopes of pile conveyer belt upwards set up just conveying mechanism 2's end is higher than pile conveyer belt 3's front end, two adjacent wrapping bags are in when carrying pile conveyer belt 3 forms and stacks from top to bottom, pile the pile in advance before the pile promptly, on the other hand, because the wrapping bag quality is lighter and be the slice transport, wafts easily when transport speed is very fast, causes and carries the confusion, through 4 orientations of air-blower pile conveyer belt 3 blows the pressure, can stabilize the wrapping bag and carry in order to guarantee faster transport speed on pile conveyer belt 3.

Furthermore, an elastic pressure rod 6 is arranged on the stacking conveyor belt 3, a first end of the elastic pressure rod 6 is fixed to the front upper portion of the stacking conveyor belt 3, a second end of the elastic pressure rod 6 extends backwards, and a second end of the elastic pressure rod 6 presses the conveying surface of the stacking conveyor belt 3. Specifically, the front upper part of the stacking conveyor belt 3 is provided with a placing shaft for arranging the air blower 4 and the elastic pressure rod 6, and a torsion spring is arranged between the elastic pressure rod 6 and the placing shaft, so that the elastic pressure rod 6 has elastic force pressing against the conveying surface of the stacking conveyor belt 3.

Through elastic pressure bar 6 for the wrapping bag laminates pile conveyer belt 3 more and carries, carries more reliable and more steadily.

The middle part of the elastic pressure rod 6 is an upward convex arc, the tail end of the elastic pressure rod 6 is a downward convex arc, and the tail end of the elastic pressure rod 6 is tangent to the conveying surface of the stacking conveying belt 3. The bellied arc middle part that makes upwards intensity when elastic pressure bar 6 pushes down is higher, and non-deformable then the bellied arc end can prevent that elastic pressure bar 6 from hindering the wrapping bag and carrying backward.

In order to limit the positions of the two sides when the packaging bags are conveyed, at least the first half part of the stacking conveyor belt 3 is provided with a limiting baffle 31, and the limiting baffle 31 is two and is respectively positioned on the two sides of the stacking conveyor belt 3.

In this embodiment, the conveying mechanism 2 includes a front conveying mechanism 21 and an acceleration conveying mechanism 22 connected to the front conveying mechanism 21; the front conveying mechanism 21 is configured to convey the packaging bag in the previous step to the accelerated conveying mechanism 22, and the accelerated conveying mechanism 22 accelerates the conveying of the packaging bag to the stacking conveyor 3. The conveying speed of the packaging bags is faster, and the packaging bags can be conveyed to the stacking conveyor belt 3 more smoothly.

Accordingly, the front conveying mechanism 21 includes: a front conveyor belt 211; a front support rod 212, wherein the front support rod 212 is erected above the front conveyor belt 211; a front vertical rod 213, wherein a first end of the front vertical rod 213 is hinged on the front support rod 212; and the first pressure wheel 214 is hinged at the second end of the front vertical rod 213, the axial direction of the first pressure wheel 214 is vertical to the conveying direction of the front conveying belt 211, and the first pressure wheel 214 presses the front conveying belt 211 when hanging down. When the wrapping bag carried on preceding conveyer belt 211, first pinch roller 214 pinch roller pressed to the wrapping bag in carrying, through the gravity reinforcing wrapping bag of first pinch roller 214 self and preceding conveyer belt 211's frictional force for transportation process is more stable smooth and easy, effectively avoids skidding.

The acceleration conveying mechanism 22 includes: the accelerating conveyer belt 221, the accelerating conveyer belt 221 is arranged at the rear end of the front conveyer mechanism 21; an acceleration support bar 222, wherein the acceleration support bar 222 is erected above the acceleration conveyor belt 221; a first acceleration vertical rod 223, wherein a first end of the first acceleration vertical rod 223 is hinged on the acceleration support rod 222; the second pressing wheel 224 is hinged to the second end of the first acceleration vertical rod 223, the axial direction of the second pressing wheel 224 is perpendicular to the conveying direction of the acceleration conveying belt 221, and the second pressing wheel 224 presses the acceleration conveying belt 221 when hanging down; a second acceleration vertical rod 225, wherein a first end of the second acceleration vertical rod 225 is hinged on the acceleration support rod 222; the third pressing wheel 226 is hinged to the second end of the second acceleration vertical rod 225, the axial direction of the third pressing wheel 226 is perpendicular to the conveying direction of the acceleration conveying belt 221, and the third pressing wheel 226 presses the acceleration conveying belt 221 when hanging down; the second pinch roller 224 and the third pinch roller 226 are respectively located at the front and rear sides of the acceleration support bar 222, so that the packaging bag passes through the second pinch roller 224 and the third pinch roller 226 in sequence when being conveyed by the acceleration conveyor belt 221.

When the packaging bags are transported on the accelerating conveying belt 221, the packaging bags pass through the lower portions of the second pressing wheel 224 and the third pressing wheel 226 respectively, and the friction force between the packaging bags and the accelerating conveying belt 221 is enhanced through the gravity of the packaging bags and the third pressing wheel 226, so that the conveying process is more stable and reliable, and slipping is avoided.

Further, the first acceleration vertical bar 223 includes a first swing arm 2231, a first adjusting arm 2232, and a first locking screw, a first end of the first swing arm 2231 is hinged to the acceleration supporting bar 222, a second end of the first swing arm 2231 is provided with a first locking hole, a first adjusting bar hole is provided on the first adjusting arm 2232, and the first locking screw passes through the first locking hole and the first adjusting bar hole to adjustably lock the second end of the first swing arm 2231 in the first adjusting bar hole; the second acceleration drop bar 225 includes a second swing arm 2251, a second adjustment arm 2252 and a second locking screw 2253, wherein a first end of the second swing arm 2251 is hinged to the acceleration support bar 222, a second end of the second swing arm 2251 is provided with a second locking hole, and a second adjustment bar hole is provided in the second adjustment arm 2252, and the second locking screw passes through the second locking hole and the second adjustment bar hole to adjustably lock the second end of the second swing arm 2251 in the second adjustment bar hole. The length of the first acceleration vertical rod 223 can be adjusted between the first swing arm 2231 and the first adjusting arm 2232 through a first locking screw, the length of the second acceleration vertical rod 225 can be adjusted between the second swing arm 2251 and the second adjusting arm 2252 through a second locking screw 2253, and the distance between the second pinch roller 224 and the third pinch roller 226 can be adjusted through adjusting the lengths of the first acceleration vertical rod 223 and the second acceleration vertical rod 225, so that the transportation requirements of packages with different lengths can be met through adjustment.

Furthermore, the end of the stacking conveyor belt 3 extends to a downward inclined slide way 51, and the bottom end of the slide way 51 is provided with a baffle plate 52. The sequentially stacked packaging bags are conveyed by the stacking conveyor 3 to slide down the chute 51 and then stop at the stop 52, thereby forming stacked packaging bags.

Preferably, the slide 51 with be equipped with diversion back shaft 7 between the pile conveyer belt 3, be equipped with diversion pole 71 on the diversion back shaft 7, diversion pole 71 is located pile conveyer belt 3 is terminal and to slide 51 gliding direction extends. The wrapping bag can upwards bulge when carrying the top to pile conveyer belt 3, through setting up diversion pole 71, touch on one side the convex of wrapping bag diversion pole 71, diversion pole 71 can be effectively with the adjustment of wrapping bag direction for sliding to slide 51 direction to automatic pile when sliding baffle 52 department.

In summary, the present application has, but is not limited to, the following beneficial effects:

1. through rotatory cutter mechanism 8 with the reverse synchronous rotation of commentaries on classics roller mechanism 9 makes blade group 82 inlays and inserts realize the cutting when the knife bank 93, has promoted work efficiency, and pivoted tangential force can drive the wrapping bag and advance simultaneously, is convenient for realize automated production.

3. The knife groove set 93 formed by the plastic has certain elasticity, so that the packaging bag can be more tightly pressed for cutting, and the blades can be better protected.

4. Can in time collect because of the piece and the piece that the cutting produced through piece collection device 1, guarantee the clean and tidy of site environment, and clean labour saving and time saving more relatively artifical.

5. Through conveying mechanism 2 with pile conveyer belt 3's cooperation is carried, and two adjacent wrapping bags are in pile conveyer belt 3 forms and stacks from top to bottom, and on the other hand, through 4 orientations of air-blower pile conveyer belt 3 blows the pressure, can stabilize the conveying with guaranteeing faster transport speed on pile conveyer belt 3 with the wrapping bag.

6. Through elastic pressure bar 6 for the wrapping bag laminates pile conveyer belt 3 more and carries, carries more reliable and more steadily.

7. The bellied arc middle part that makes upwards intensity when elastic pressure bar 6 pushes down is higher, and non-deformable then the bellied arc end can prevent that elastic pressure bar 6 from hindering the wrapping bag and carrying backward.

8. When the wrapping bag carried on preceding conveyer belt 211, first pinch roller 214 pinch roller pressed to the wrapping bag in carrying, through the gravity reinforcing wrapping bag of first pinch roller 214 self and preceding conveyer belt 211's frictional force for transportation process is more stable smooth and easy, effectively avoids skidding.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.

Claims

1. The packaging bag cutting equipment is characterized by comprising a rotary cutter mechanism (8) and a roller mechanism (9);

the rotary cutter mechanism (8) comprises a cutter seat (81) and a blade group (82) arranged on the cutter seat (81);

the roller rotating mechanism (9) comprises a roller rotating body (91) and a knife groove group (93) which is arranged on the roller rotating body (91) and corresponds to the blade group (82);

the rotary cutter mechanism (8) and the rotary roller mechanism (9) rotate reversely and synchronously, and when the rotary cutter mechanism rotates to the position where the blade group (82) is opposite to the cutter groove group (93), the blade group (82) is inserted into the cutter groove group (93).

2. The bag cutting apparatus of claim 1, wherein the blade set (82) includes a first blade (821), an intermediate blade set (820), and a fifth blade (825) in spaced side-by-side relation;

the first blade (821) comprises a first transverse cutting part (8211) and a first vertical cutting part (8212) which is perpendicularly intersected and connected with the first transverse cutting part (8211);

the fifth blade (825) comprises a fifth transverse cutting portion (8251) and a fifth vertical cutting portion (8252), and the fifth vertical cutting portion (8252) and the fifth transverse cutting portion (8251) are arranged at intervals and are vertical to each other;

-said intermediate blade set (820) is aligned with said first crosscut (8211) and with said fifth crosscut (8251);

the first vertical cut (8212) is located on a side close to the middle blade set (820), and the fifth vertical cut (8252) is located on a side far from the middle blade set (820).

3. The bag cutting apparatus of claim 2, wherein the intermediate blade set (820) includes a second blade (822), a third blade (823) and a fourth blade (824) spaced side-by-side.

4. The bag cutting apparatus of claim 1 wherein the blades of the blade set (82) are comb-shaped.

5. The bag cutting apparatus of claim 1 wherein the material forming the set of knife slots (93) is plastic.

6. The bag cutting apparatus as claimed in claim 1, characterized in that the blade holder (81) is provided with heating means for heating the blade group (82).

7. The bag cutting apparatus according to claim 1, wherein the rotary cutter mechanism (8) includes a cutter driving means for driving the cutter holder (81) to rotate;

the roller mechanism (9) comprises a roller driving device for driving the roller body (91) to rotate.

8. The bag cutting apparatus according to any one of claims 1 to 7, further comprising a debris collecting device (1), said debris collecting device (1) comprising a blanking aperture (11), a feed pipe (12), a suction fan (13) and a collecting cage (14);

the blanking hole (11) is arranged below the rotary roller body (91);

the first end of the material guiding pipe (12) is communicated with the blanking hole (11);

one end of the exhaust fan (13) is connected with the material guiding pipe (12), and the other end of the exhaust fan is connected with the material collecting cage (14) so as to suck fragments generated by cutting into the material collecting cage (14) from the blanking hole (11) through the material guiding pipe (12).

9. The packaging bag cutting device according to any one of claims 1 to 7, further comprising a packaging bag conveying device including a conveying mechanism (2), a stacking conveyor belt (3) and a blower (4) provided behind the rotary cutter mechanism (8) and the roller mechanism (9);

the conveying direction of the stacking conveying belt (3) is inclined upwards, the front end of the stacking conveying belt (3) is connected with the tail end of the conveying mechanism (2), and the tail end of the conveying mechanism (2) is higher than the front end of the stacking conveying belt (3), so that when two adjacent packaging bags are respectively conveyed from the conveying mechanism (2) to the stacking conveying belt (3), the two adjacent packaging bags are stacked up and down on the stacking conveying belt (3) and conveyed backwards;

the air blower (4) is located above the front portion of the stacking conveyor belt (3) and the air outlet direction and the conveying direction of the stacking conveyor belt (3) form a preset angle, so that the packaging bags conveyed by the conveying mechanism (2) are pressed on the stacking conveyor belt (3).

10. The packaging bag cutting device according to claim 9, wherein an elastic pressure bar (6) is arranged on the stacking conveyor belt (3), a first end of the elastic pressure bar (6) is fixed at the front upper part of the stacking conveyor belt (3), a second end of the elastic pressure bar (6) extends backwards, and the second end of the elastic pressure bar (6) presses against the conveying surface of the stacking conveyor belt (3);

the middle part of the elastic pressure rod (6) is an upward convex arc, the tail end of the elastic pressure rod (6) is a downward convex arc, and the tail end of the elastic pressure rod (6) is tangent to the conveying surface of the stacking conveying belt (3).