Multifunctional bag cutting mechanism

Abstract

The invention relates to a multifunctional bag cutting mechanism which comprises a supporting frame. The lifting assembly is adjustably mounted in the supporting frame body; the driving assembly is installed on the supporting frame body, connected with the lifting assembly and used for driving the lifting assembly to ascend and descend; the bag cutting assembly is mounted on the lifting assembly and is used for forming a non-continuous cutting seam in the express bag; the heat sealing assembly is installed on the lifting assembly, located on one side of the bag cutting assembly and used for conducting heat sealing on the express bags; and the opening assembly is installed on the lifting assembly, located on the other side of the bag cutting assembly and used for being in friction with the express bag so that the part, making contact with the opening assembly, of the express bag can be torn off along the kerf to form an express bag opening. The structure is compact, and the gap between the sealing position and the opening position of the express bag is moderate.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of packaging equipment, and relates to a bag cutting mechanism, in particular to a multifunctional bag cutting mechanism. BACKGROUND

[0002] The express bag is a special bag used for packaging files, goods and the like in the express industry, also known as a speed delivery bag, a mailing bag or an express packing bag, and is mainly made of polyethylene (PE), has the characteristics of waterproofness, low cost and convenient use, and is widely used in the fields of express transportation and e-commerce.

[0003] With the continuous improvement of the automation level of the express packing industry, more and more scenarios begin to use full-automatic packing machines. For example, a full-automatic packing machine is disclosed in Chinese Patent Application No. 202420086991.9, which comprises a support platform, a first machine case and a second machine case. The first machine case and the second machine case are fixedly installed on the support platform, and the first machine case and the second machine case are oppositely arranged and have a preset distance therebetween. The packing machine further comprises an express bag conveying mechanism and a label sticking mechanism. The express bag conveying mechanism is fixedly connected to the first machine case and the second machine case, and the label sticking mechanism is fixedly installed on the first machine case or the second machine case. The express bag conveying mechanism is used to convey the express bag to a preset position, seal and separate the express bag. The label sticking mechanism is arranged on the travel of the express bag, and the label conveyed by the label sticking mechanism faces the travel of the express bag, so as to stick the label on the express bag.

[0004] At present, the full-automatic packing machine usually needs to be provided with separately working express bag sealing, punching (or cutting) and opening structures, which leads to a complex and not compact structure, and causes a too large gap between the sealing and opening positions of the express bag. SUMMARY

[0005] The present application aims at solving the problems existing in the prior art and provides a multifunctional bag cutting mechanism.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a multifunctional bag cutting mechanism, which comprises: a support frame body; a lifting assembly adjustably installed in the support frame body; a driving assembly installed on the support frame body and connected with the lifting assembly, used to drive the lifting assembly to lift; a bag cutting assembly installed on the lifting assembly, used to form a discontinuous cutting seam on the express bag; a heat sealing assembly mounted on the lifting assembly and located at one side of the bag cutting assembly for heat sealing the express bags; an opening assembly mounted on the lifting assembly and located at the other side of the bag cutting assembly for rubbing against the express bags to tear the express bags along the cutting seams to form express bag openings.

[0007] Optimally, the support frame comprises a bottom plate, a top plate arranged above the bottom plate, support side plates arranged between the bottom plate and the top plate and spaced apart, and guide limiting blocks arranged on the inner walls of each of the support side plates and spaced apart vertically.

[0008] Further, the driving assembly comprises support rods mounted on the top of the support frame, an outer housing mounted on the top of the support frame and covering the support rods, a motor mounted on the free ends of the support rods and penetrating the outer housing, and a shaft coupling connected with the motor.

[0009] Further, the lifting assembly comprises a carrier plate located between the bottom plate and the top plate, a first transmission unit connected with the shaft coupling and connected with the carrier plate, and a first guide unit mounted on the carrier plate and penetrating the support frame.

[0010] Further, the first transmission unit comprises a screw nut mounted on the middle part of the carrier plate, and a screw rod connected with the shaft coupling at one end and matched with the screw nut; the first guide unit comprises first guide sleeves mounted on the two end parts of the carrier plate, and first guide rods connected with the carrier plate at one end and penetrating the first guide sleeves one by one at the other end.

[0011] Further, the bag cutting assembly comprises a first adapter plate located between the carrier plate and the bottom plate and limited by two adjacent guide limiting blocks, a clamping plate mounted on the side surface of the first adapter plate, a zigzag cutting knife mounted between the first adapter plate and the clamping plate, a second guide unit mounted on the first adapter plate and penetrating the carrier plate, and a first buffer connecting unit connecting the first adapter plate and the carrier plate, the second guide unit comprises a plurality of second guide sleeves mounted on the carrier plate, and second guide rods connected with the first adapter plate at one end and penetrating the second guide sleeves one by one at the other end, The first buffering connecting unit comprises a plurality of first hollow bolts mounted on the carrier plate, first connecting rods connected with the first adapter plate at one end and penetrating the first hollow bolts at the other end one by one, first springs sleeved on the first connecting rods one by one and located between the first adapter plate and the carrier plate, and first nuts mounted on the upper part of the first connecting rods for limiting the first hollow bolts.

[0012] Further, the heat sealing assembly comprises a second adapter plate located between the carrier plate and the bottom plate and limited by two adjacent guide limiting blocks, a heat insulation cover mounted on the lower part of the second adapter plate, a heat sealing knife mounted in the heat insulation cover, a third guide unit mounted on the second adapter plate and penetrating the carrier plate, and a second buffering connecting unit connecting the second adapter plate and the carrier plate, The third guide unit comprises a plurality of third guide sleeves mounted on the carrier plate, and third guide rods connected with the second adapter plate at one end and penetrating the third guide sleeves at the other end one by one. The second buffering connecting unit comprises a plurality of second hollow bolts mounted on the carrier plate, second connecting rods connected with the second adapter plate at one end and penetrating the second hollow bolts at the other end one by one, second springs sleeved on the second connecting rods one by one and located between the second adapter plate and the carrier plate, and second nuts mounted on the upper part of the second connecting rods for limiting the second hollow bolts.

[0013] Specifically, the edge of the carrier plate is formed with a downwardly bent fold, and the outer side of the second adapter plate is mounted with a mounting seat; the multifunctional bag cutting mechanism further comprises a puncher mounted on the mounting seat and corresponding to the fold.

[0014] Further, the opening assembly comprises a third adapter plate mounted on the bottom surface of the carrier plate and limited by two adjacent guide limiting blocks, a roller frame bufferably mounted on the side surface of the third adapter plate, a dust sticking roller unidirectionally rotatably mounted on the roller frame, and a plurality of roller blocks mounted on the third adapter plate for driving the dust sticking roller to rotate unidirectionally.

[0015] Compared with the prior art, the multifunctional bag cutting mechanism has the advantages that the bag cutting assembly, the heat sealing assembly and the opening assembly are connected with the lifting assembly respectively, so that the synchronous action of the bag cutting assembly, the heat sealing assembly and the opening assembly can be realized by driving the lifting assembly through the driving assembly, the structure is compact (the overall width can be as low as about 10 cm), and the gap between the sealing part and the opening part of the express bag is moderate (which is beneficial to improve the effective volume of the express bag and save materials). BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 4 is a schematic view of the express bag being opened (being unwound) ; Figure 2 Fig. 5 is a schematic view of the structure of the multifunctional bag cutting mechanism of the present application; Figure 3 Fig. 6 is a schematic view of part of the structure of the multifunctional bag cutting mechanism of the present application; Figure 4 Fig. 7 is a schematic view of part of the structure of the multifunctional bag cutting mechanism of the present application from another perspective; Figure 5 Fig. 8 is a side view of part of the structure of the multifunctional bag cutting mechanism of the present application; Figure 6 Fig. 9 is a schematic view of the opening assembly in the multifunctional bag cutting mechanism of the present application; Figure 7 Fig. 10 is a schematic view of the structure of the push roller block in the multifunctional bag cutting mechanism of the present application. DETAILED DESCRIPTION

[0017] The present application will be further described below in connection with the embodiments shown in the accompanying drawings.

[0018] As shown in the multifunctional bag cutting mechanism, it comprises cooperating support frame 1, drive assembly 2, lifting assembly 3, opening assembly 4, bag cutting assembly 5 and heat sealing assembly 6 and the like structures. Figures 2 to 6

[0019] The support frame 1 comprises bottom plate 11, top plate 13 arranged above the bottom plate 11, support side plates 12 arranged between the bottom plate 11 and the top plate 13 and spaced apart (the support side plates 12 are two plates, which are perpendicular to the bottom plate 11 or the top plate 13), and a plurality of guide limiting blocks 14 installed on the inner wall of each support side plate 12 and vertically spaced apart (in this embodiment, there are four guide limiting blocks 14 on one side). The multifunctional bag cutting mechanism can be installed on the relevant automated equipment through the bottom plate 11. The edge portions of the bottom plate 11 and the top plate 13 are preferably provided with outwardly turned bending structures (it can be understood that the bottom plate 11 and the top plate 13 are both provided with folded edges, the same below), and the bending directions thereof extend in opposite directions; the edge portions of the two support side plates 12 are preferably provided with inwardly turned bending structures, and the bending directions thereof extend in the same direction; thus, the overall connection strength of the support frame 1 is improved. In this embodiment, the upper surface of the bottom plate 11 is provided with a pad plate 0, the pad plate 0 is embedded with a first pad strip 012 corresponding to the heat sealing assembly 6 and a first pad strip 011 corresponding to the opening assembly 46, and the pad plate 0 is also preferably provided with a recess (or a recess hole) corresponding to the bag cutting assembly 5.

[0020] ​The driving assembly 2 is mounted on the support frame 1 and connected with the lifting assembly 3, and is used to drive the lifting assembly 3 to lift. Specifically, the driving assembly 2 comprises a plurality of support rods 21 (four in the present application) mounted on the top of the support frame 1, an outer casing 23 covering the plurality of support rods 21 and mounted on the top of the support frame 1, a motor 22 mounted on the free ends of the plurality of support rods 21 and penetrating through the outer casing 23, and a coupling 24 connected with the motor 22 (the motor 22 has an output shaft, and the coupling 24 is connected with the output shaft).

[0021] The lifting assembly 3 is adjustably mounted in the support frame 1. Specifically, the lifting assembly 3 comprises a carrier plate 31 (actually between the base plate 11 and the top plate 13, the same below; at least one edge of the carrier plate 31 is formed with a downwardly bent folding strip 311, but usually both edges have the structure) between the base plate 11 and the top plate 13, a first transmission unit connected with the coupling 24 and the carrier plate 31, and a first guide unit mounted on the carrier plate 31 and penetrating through the support frame 1. In the present embodiment, the first transmission unit comprises a lead screw nut 32 mounted in the middle of the carrier plate 31 and a lead screw 33 having one end connected with the coupling 24 and matched with the lead screw nut 32; the first guide unit comprises first guide sleeves 35 (i.e. two first guide sleeves 35) mounted on both ends of the carrier plate 31 and first guide rods 34 having one end connected with the carrier plate 31 and the other end penetrating through the first guide sleeves 35 one by one. In this way, when the motor 22 works, the lead screw 33 can be driven to rotate synchronously, so as to drive the carrier plate 31 to lift along the first guide rods 34 through the lead screw nut 32.

[0022] The cutting bag assembly 5 is installed on the lifting assembly 3 and is used to form discontinuous cutting seams on the express bags. Specifically, the cutting bag assembly 5 can be lowered to a suitable position under the driving of the lifting assembly 3 to perform the cutting on the express bags (not single express bags, but continuous material; when the express bag continuous material passes, it will be temporarily stopped to be cut) below, and then the cutting bag assembly 5 is reset. In this embodiment, the cutting bag assembly 5 includes a first adapter plate 51 located between the carrier plate 31 and the bottom plate 11 (i.e. between the carrier plate 31 and the cushion plate 0) and limited by two adjacent guide limiting blocks 14 (the two adjacent guide limiting blocks 14 are used to limit the vertical direction of the first adapter plate 51 to ensure the linear motion of the first adapter plate 51 when it is vertically lifted; that is, the two adjacent guide limiting blocks 14 will not affect the vertical motion of the first adapter plate 51, and the same applies below), a clamping plate 52 installed on the side of the first adapter plate 51, a sawtooth cutter 53 installed between the first adapter plate 51 and the clamping plate 52 (since the cutter is a sawtooth cutter 53, the cutting seam formed on the express bag by the cutter is discontinuous, so the express bag continuous material will not be cut into individual structures), a second guide unit installed on the first adapter plate 51 and penetrating the carrier plate 31, and a first buffer connecting unit connecting the first adapter plate 51 and the carrier plate 31. Specifically, the second guide unit includes a plurality of second guide sleeves 50 (which can be routinely selected according to actual needs, but usually two; the same applies below) installed on the carrier plate 31 and a second guide rod 52 connected to the first adapter plate 51 at one end and penetrating the second guide sleeve 50 at the other end one by one; the first buffer connecting unit includes a plurality of first hollow bolts (usually two) installed on the carrier plate 31, a first connecting rod 54 connected to the first adapter plate 51 at one end and penetrating the first hollow bolt at the other end one by one, a first spring sleeved on the first connecting rod 54 one by one and located between the first adapter plate 51 and the carrier plate 31, and a first nut installed on the upper part of the first connecting rod 54 for limiting the first hollow bolt. In this way, the cutting bag assembly 5 can be lifted and lowered synchronously with the lifting assembly 3, and when the sawtooth cutter 53 contacts the express bag and bears pressure, the first spring and other structures can achieve buffering, avoiding the hard contact of the sawtooth cutter 53 with the cushion plate 0, affecting the service life of the sawtooth cutter 53 or cutting off the express bag (i.e. forming continuous cutting seams). In order to improve the connection effect of the first buffer connecting unit and the first adapter plate 51, the first adapter plate 51 usually has a first upper folding part 511 (i.e. the first adapter plate 51 usually has an upper folding edge perpendicular to the body of the first adapter plate 51), so that the lower end of the first connecting rod 54 is connected to the first upper folding part 511.

[0023] The heat sealing assembly 6 is also installed on the lifting assembly 3 and located at one side of the bag cutting assembly 5, and is used for heat sealing the express bags. Specifically, the heat sealing assembly 6 can be lowered to a suitable position under the driving of the lifting assembly 3 to heat seal the express bags (not single express bags, but continuous material; when the continuous material of the express bags passes, it will be temporarily stopped to be heat sealed to form a heat sealing line, and then the heat sealing assembly 6 is reset) below. In this embodiment, the heat sealing assembly 6 includes a second adapter plate 61 located between the carrier plate 31 and the bottom plate 11 (i.e. between the carrier plate 31 and the cushion plate 0) and limited by the two adjacent guide limiting blocks 14, a heat insulation cover 65 installed at the lower part of the second adapter plate 61, a heat sealing knife 66 installed in the heat insulation cover 65 (the lower edge of the heat sealing knife 66 protrudes from the lower edge of the heat insulation cover 65, and the heat sealing knife 66 corresponds to the first cushion strip 012 described above), a third guide unit installed on the second adapter plate 61 and penetrating through the carrier plate 31, and a second buffer connecting unit connecting the second adapter plate 61 and the carrier plate 31. Specifically, the third guide unit includes a plurality of third guide sleeves 63 installed on the carrier plate 31, and a third guide rod 62 connected to the second adapter plate 61 at one end and penetrating through the third guide sleeves 63 one by one at the other end; the second buffer connecting unit includes a plurality of second hollow bolts installed on the carrier plate 31, a second connecting rod 64 connected to the second adapter plate 61 at one end and penetrating through the second hollow bolts one by one at the other end, a second spring sleeved on the second connecting rod 64 one by one and located between the second adapter plate 61 and the carrier plate 31, and a second nut installed on the upper part of the second connecting rod 64 for limiting the second hollow bolt. In this way, the heat sealing assembly 6 can be lifted and lowered synchronously with the lifting assembly 3, and when the heat sealing knife 66 contacts the express bag and bears pressure, the second spring and other structures can be used for buffering to avoid hard contact between the heat sealing knife 66 and the first cushion strip 012, which affects the service life of the heat sealing knife 66 or causes the express bag to bear too much pressure and be heat penetrated. In order to improve the connection effect of the second buffer connecting unit and the second adapter plate 61, the second adapter plate 61 usually has a second upper folding part 611 (i.e. the second adapter plate 61 usually has an upper folding edge which is perpendicular to the body of the second adapter plate 61), so that the lower end of the second connecting rod 64 is connected to the second upper folding part 611.

[0024] In this embodiment, the outer side of the second adapter plate 61 (the side away from the bag cutting assembly 5) is also provided with a mounting seat 67, and the multifunctional bag cutting mechanism further includes a punch 7 installed on the mounting seat 67 and corresponding to the folding strip 311 (the cushion plate 0 is provided with an avoiding hole 013 corresponding to the punch 7); in this way, when the carrier plate 31 is driven to descend by the driving assembly 2, the folding strip 311 of the carrier plate 31 can just move downward to press the punch 7, so as to realize punching of the express bag.

[0025] The opening assembly 4 is installed on the lifting assembly 3 and is located on the other side of the bag cutting assembly 5, and is used to rub against the express bag to form an express bag opening by tearing the part of the express bag in contact with the cutting seam (as shown in Figure 1 The opening assembly 4 includes a third adapter plate 41 installed on the bottom surface of the carrier plate 31 and limited by the two adjacent guide limiting blocks 14 (the third adapter plate 41 also preferably has a third upper folding portion 411, so as to improve the connection strength between the third adapter plate 41 and the carrier plate 31), a roller frame 40 which is installed on the side surface of the third adapter plate 41 in a bufferable manner, a dust sticking roller 462 which is installed on the roller frame 40 in a one-way rotatable manner, and a plurality of roller pushing blocks 44 which are installed on the third adapter plate 41 and are used to drive the dust sticking roller 462 to rotate in one direction (as shown in Figure 7

[0026] Specifically, the opening assembly 4 further includes two sets of guide structures which are installed on the side surface of the third adapter plate 41 and are arranged in a spaced manner, each set of guide structures including a mounting seat arranged in an upper and lower spaced manner, a fourth guide rod 42 installed on the two mounting seats, and a sliding block 43 which is slidably installed on the fourth guide rod 42. The roller frame 40 is further installed on the side surface of the third adapter plate 41 through two sets of buffer units 45, each set of buffer units 45 including a third hollow bolt 454 installed on the carrier plate 31, a connecting plate 451 arranged on one side of the third adapter plate 41, a third connecting rod 452 having one end connected with the connecting plate 451 and the other end penetrating through the third hollow bolt, and a third spring 453 sleeved on the third connecting rod 452 and located between the connecting plate 451 and the carrier plate 31. In the present embodiment, when the third connecting rod 452 is relatively long and extends upward to penetrate through the top plate 13, two third nuts can be installed on the third connecting rod 452, so that the third nuts are respectively located on both sides of the top plate 13, so that when the third connecting rod 452 moves, it can only move within the space defined by the two third nuts, avoiding that the displacement of the roller frame 40 is too large to affect the use effect of the dust sticking roller 462. The roller frame 40 is installed on the connecting plate 451 and the sliding block 43, and when the third adapter plate 41 moves downward under the driving of the carrier plate 31, it can drive the roller frame 40 and the dust sticking roller 462 to move downward by a corresponding distance and realize buffering; then the third adapter plate 41 further moves downward, the roller pushing block 44 also further moves downward (the roller frame 40 and the dust sticking roller 462 do not further move downward, at this time the dust sticking roller 462 is in contact with the express bag) to press the dust sticking roller 462 to rotate in one direction, so as to tear the non-continuous cutting seam of the express bag. (Note: the express bag can be simplified as having two surfaces, the lower surface is in contact with the base plate 0, and the upper surface is in contact with the dust sticking roller 462; after being cut by the bag cutting assembly 5, the upper surface and the lower surface both form a non-continuous cutting seam, but the dust sticking roller 462 only tears the upper surface of the express bag through the cutting seam).

[0027] ​In this embodiment, the sticky roller 462 is typically mounted on the roller frame 40 as a sticky roller assembly 46. The sticky roller assembly 46 includes two bearing seats 461 mounted on the roller frame 40 and spaced apart (the sticky roller 462 is mounted on the two bearing seats 461 via its own roller shaft 4621), two second one-way bearings 463 fitted onto the roller shaft 4621 (each second one-way bearing 463 has a feeding protrusion 4631 formed on its circumferential surface, corresponding to the feeding roller block 44), miniature bearings 464 rotatably mounted on both sides of the feeding protrusion 4631 via a mounting shaft, a first spring mounting member mounted on the outer surface of the feeding protrusion 4631, a second spring mounting member mounted on the roller frame 40, and a return spring mounted on the first and second spring mounting members. When the feeding roller block 44 presses against the feeding protrusion 4631, it rotates counterclockwise (according to...). Figure 6 (as defined in the direction) Since the second one-way bearing 463 is a one-way bearing, it will synchronously drive the sticky roller 462 to rotate counterclockwise, using the sticky roller 462 in contact with the express bag to tear open the cut seam of the express bag to form an opening; after the sticky roller 462 is released from the express bag, the second one-way bearing 463 is reset under the action of the return spring. A bearing assembly 47 that contacts the side of the support side plate 12 is also installed on the outer side of the roller frame 40, further ensuring the vertical movement of the roller frame 40. In this embodiment, each push roller block 44 includes a block body 441 (the block body 441 has a connecting hole 442, which is installed using conventional fasteners) installed on the side of the third adapter plate 41 and two arc-shaped extrusion plates 443 formed at the lower part of the block body 441 and cooperating with the micro bearing 464. The convex arc surface 4431 of the arc-shaped extrusion plate 443 faces the micro bearing 464 to ensure that the material pushing protrusion 4631 is pressed.

[0028] The multifunctional bag cutting mechanism of the present invention connects the bag cutting component 5, the heat sealing component 6, and the opening component 4 to the lifting component 3 respectively. In this way, the working of the lifting component 3 driven by the driving component 3 can realize the synchronous operation of the bag cutting component 5, the heat sealing component 6, and the opening component 4 (as well as the punching machine 7). The structure is compact (the overall width can be as low as about 10cm), and the gap between the sealing and opening of the express bag is moderate (which is conducive to improving the effective volume of the express bag and saving materials).

[0029] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A multifunctional bag cutting mechanism, characterized in that, It includes: Support frame (1); A lifting assembly (3) is adjustablely installed inside the support frame (1); A drive assembly (2) is mounted on the support frame (1) and connected to the lifting assembly (3) for driving the lifting assembly (3) to move up and down. A bag-cutting assembly (5) is mounted on the lifting assembly (3) and is used to form discontinuous cuts on the express bag; A heat-sealing assembly (6) is installed on the lifting assembly (3) and located on one side of the bag-cutting assembly (5) for heat-sealing the express bag; An opening assembly (4) is mounted on the lifting assembly (3) and located on the other side of the bag cutting assembly (5). It is used to rub against the express bag to tear open the part of the express bag that is in contact with it along the cut seam to form an opening in the express bag.

2. The multifunctional bag cutting mechanism according to claim 1, characterized in that: The support frame (1) includes a base plate (11), a top plate (13) disposed above the base plate (11), support side plates (12) installed between the base plate (11) and the top plate (13) and spaced apart, and multiple guide limiting blocks (14) installed on the inner wall of each support side plate (12) and spaced apart vertically.

3. The multifunctional bag cutting mechanism according to claim 2, characterized in that: The drive assembly (2) includes multiple support rods (21) mounted on the top of the support frame (1), an outer shell (23) mounted on the top of the support frame (1) and covering the multiple support rods (21), a motor (22) mounted on the free ends of the multiple support rods (21) and passing through the outer shell (23), and a coupling (24) connected to the motor (22).

4. The multifunctional bag cutting mechanism according to claim 3, characterized in that: The lifting assembly (3) includes a carrier plate (31) located between the bottom plate (11) and the top plate (13), a first transmission unit connected to the coupling (24) and the carrier plate (31), and a first guide unit mounted on the carrier plate (31) and passing through the support frame (1).

5. The multifunctional bag cutting mechanism according to claim 4, characterized in that: The first transmission unit includes a lead screw nut (32) installed in the middle of the carrier plate (31) and a lead screw (33) connected to the coupling (24) at one end and cooperating with the lead screw nut (32); the first guide unit includes a first guide sleeve (35) installed at both ends of the carrier plate (31) and a first guide rod (34) connected to the carrier plate (31) at one end and passing through the first guide sleeve (35) at the other end.

6. The multifunctional bag cutting mechanism according to claim 4, characterized in that: The bag-cutting assembly (5) includes a first adapter plate (51) located between the carrier plate (31) and the bottom plate (11) and limited by two adjacent guide limiting blocks (14), a clamping plate (52) installed on the side of the first adapter plate (51), a serrated cutter (53) installed between the first adapter plate (51) and the clamping plate (52), a second guide unit installed on the first adapter plate (51) and penetrating the carrier plate (31), and a first buffer connecting unit connecting the first adapter plate (51) and the carrier plate (31). The second guide unit includes a plurality of second guide sleeves (50) mounted on the carrier plate (31) and a second guide rod (52) with one end connected to the first adapter plate (51) and the other end correspondingly passing through the second guide sleeve (50). The first buffer connection unit includes a plurality of first hollow bolts mounted on the carrier plate (31), a first connecting rod (54) with one end connected to the first adapter plate (51) and the other end passing through the first hollow bolts in a corresponding manner, a first spring sleeved on the first connecting rod (54) in a corresponding manner and located between the first adapter plate (51) and the carrier plate (31), and a first nut mounted on the upper part of the first connecting rod (54) for limiting the first hollow bolts.

7. The multifunctional bag cutting mechanism according to claim 4, characterized in that: The heat-sealing assembly (6) includes a second adapter plate (61) located between the carrier plate (31) and the base plate (11) and limited by two adjacent guide limiting blocks (14), a heat insulation cover (65) installed on the lower part of the second adapter plate (61), a heat-sealing knife (66) installed in the heat insulation cover (65), a third guide unit installed on the second adapter plate (61) and penetrating the carrier plate (31), and a second buffer connection unit connecting the second adapter plate (61) and the carrier plate (31). The third guide unit includes a plurality of third guide sleeves (63) mounted on the carrier plate (31) and a third guide rod (62) with one end connected to the second adapter plate (61) and the other end correspondingly passing through the third guide sleeve (63). The second buffer connection unit includes a plurality of second hollow bolts mounted on the carrier plate (31), a second connecting rod (64) with one end connected to the second adapter plate (61) and the other end passing through the second hollow bolts in a corresponding manner, a second spring that is sleeved on the second connecting rod (64) in a corresponding manner and located between the second adapter plate (61) and the carrier plate (31), and a second nut mounted on the upper part of the second connecting rod (64) for limiting the second hollow bolts.

8. The multifunctional bag cutting mechanism according to claim 7, characterized in that: The edge of the carrier plate (31) forms a downwardly bent fold strip (311), and the outer side of the second adapter plate (61) is equipped with a mounting base (67); the multi-functional bag cutting mechanism also includes a punching machine (7) mounted on the mounting base (67) and corresponding to the fold strip (311).

9. The multifunctional bag cutting mechanism according to claim 4, characterized in that: The opening assembly (4) includes a third transition plate (41) mounted on the bottom surface of the carrier plate (31) and limited by two adjacent guide limiting blocks (14), a roller frame (40) bufferably mounted on the side of the third transition plate (41), a dust sticking roller (462) rotatably mounted on the roller frame (40), and multiple pusher roller blocks (44) mounted on the third transition plate (41) for driving the dust sticking roller (462) to rotate unidirectionally.

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