Packaging bag opening machine

By combining a static bag cutter and a packaging bag clamp, the bag is opened using its own weight, which solves the safety hazards caused by a rotating cutter, improves safety and energy efficiency, and reduces the risk of impure raw materials.

CN223812807UActive Publication Date: 2026-01-20ZHONGSHAN HONGWAN FILM EQUIP CO LTD
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Patent Information

Application Number
CN202520428306.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-11
Publication Date
2026-01-20
Estimated Expiration
2035-03-11

AI Technical Summary

Technical Problem

The rotary bag cutter of the existing packaging bag opening machine poses a safety hazard and affects the safety of equipment use.

Method used

A static bag cutter is used, which opens the bag by its own weight. The bag cutter structure with longitudinal and transverse blades cross each other avoids the safety hazards to the operator caused by rotating cutters. The bag is cut and recycled by lifting and moving the bag clamp.

Benefits of technology

It improves the safety of packaging bag opening machines, avoids the danger to production personnel caused by rotating cutters, saves energy, and reduces the risk of impure raw materials.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a packaging bag opening machine. When the bale opener works, the bag moving driving mechanism drives the packaging bag clamp to move to the raw material station, the packaging bag clamp grabs a packaging bag through the grabbing part, then the packaging bag clamp moves to the bale opening station and drives the packaging bag to descend, and the lower side of the packaging bag makes contact with the bag cutting knife and is cut by the bag cutting knife under the gravity of the packaging bag. Raw materials flowing out of the packaging bags are collected through a collecting groove of the collector, and then the packaging bag clamp transfers the empty packaging bags to the empty bag recycling mechanism for recycling; according to the packaging bag opening machine, the static bag cutting knife is adopted, bag opening is completed through the gravity of the packaging bag, and therefore potential safety hazards caused by rotation of the bag cutting knife to production personnel can be avoided, and the use safety of the packaging bag opening machine is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to packing bag field, especially a packing bag unpacking machine. BACKGROUND

[0002] Industrial production usually uses packing bags to store and transport raw materials, and the granular raw materials can be cut open by an unpacking machine before use. Some existing unpacking machines for packing bags include a base, a bag breaking and collecting mechanism, an empty bag recycling mechanism and a bag moving device. The bag moving device moves the packing bag to the bag breaking and collecting mechanism, and the bag breaking and collecting mechanism usually uses a rotating bag cutting knife to cut open the packing bag so that the granular raw materials in the packing bag flow out. Then, the bag breaking and collecting mechanism collects the raw materials through a funnel, and then the bag moving device moves the empty packing bag to the empty bag recycling mechanism for recycling. However, the current bag breaking and collecting mechanism cuts open the packing bag by rotating the blade, which brings safety hazards to the operator and affects the safety of the equipment. SUMMARY

[0003] The utility model aims at at least solving one of the technical problems existing in the prior art. To this end, the utility model provides an unpacking machine for packing bags, which can improve the use safety.

[0004] The unpacking machine for packing bags according to the utility model embodiment includes a base, a bag breaking and collecting mechanism, an empty bag recycling mechanism and a bag moving device. The base is provided with a raw material station, an unpacking station and a recycling station. The bag breaking and collecting mechanism is arranged on the base and located at the unpacking station. The bag breaking and collecting mechanism includes a bag cutting knife and a collector. The bag cutting knife is fixedly arranged relative to the base with the blade facing upward. The collector has a collection groove with a notch facing upward, and the bag cutting knife is located at the notch of the collection groove. The empty bag recycling mechanism is arranged on the base and located at the recycling station. The bag moving device is arranged on the base. The bag moving device includes a packing bag clamp and a bag moving driving mechanism. The packing bag clamp is movably arranged on the base and can move between the raw material station, the unpacking station and the recycling station. The packing bag clamp is higher than the bag cutting knife. The packing bag clamp can be lifted and lowered relative to the base. The bag moving driving mechanism is used to drive the packing bag clamp to move. The lower side of the packing bag clamp is provided with a grabbing part.

[0005] The packaging bag opening machine has the following beneficial effects: when the packaging bag opening machine works, the bag moving driving mechanism drives the packaging bag clamp to move to the raw material station, the packaging bag clamp grabs the packaging bag through the grabbing part, then the packaging bag clamp moves to the bag opening station and drives the packaging bag to descend, the packaging bag contacts the bag cutting knife on the lower side and is cut by the bag cutting knife under its own gravity, the raw material flowing out of the packaging bag is collected through the collecting groove of the collector, then the packaging bag clamp moves the empty packaging bag to the empty bag recycling mechanism for recycling.

[0006] According to some embodiments of the present application, the bag cutting knife comprises a longitudinal knife strip and at least two transverse knife strips, the longitudinal knife strip and the transverse knife strips extend along the horizontal direction, all the transverse knife strips are parallel to each other, the longitudinal knife strip and the transverse knife strips are perpendicularly crossed, and the cutting edges of the longitudinal knife strip and the transverse knife strips are located at the same height.

[0007] According to some embodiments of the present application, the longitudinal knife strip is provided with at least two, the transverse knife strip is provided with at least three, the bag breaking and collecting mechanism is provided with a transverse bag cutting area and a longitudinal bag cutting area, the transverse bag cutting area is formed by one longitudinal knife strip and two adjacent transverse knife strips, and the longitudinal bag cutting area is formed by one longitudinal knife strip and three adjacent transverse knife strips.

[0008] According to some embodiments of the present application, the longitudinal knife strip is provided with two, and the transverse knife strip is provided with six.

[0009] According to some embodiments of the present application, the cutting edges of the longitudinal knife strip and the transverse knife strip are in the form of sawteeth.

[0010] According to some embodiments of the present application, the collector is provided with a collecting funnel, the collecting funnel forms the collecting groove, and the bag cutting knife is connected with the upper part of the collecting funnel.

[0011] According to some embodiments of the present application, the raw material station, the bag opening station and the recycling station are sequentially arranged along the left-right direction, the bag moving driving mechanism comprises a moving seat, a horizontal driver and a lifting driver, the moving seat is movably connected to the machine seat along the left-right direction, the horizontal driver is used for driving the moving seat to move left and right relative to the machine seat, the packaging bag clamp is liftably connected to the moving seat, and the lifting driver is used for driving the packaging bag clamp to move up and down relative to the moving seat.

[0012] According to some embodiments of the present application, the empty bag recycling mechanism is a recycling frame, the opening of the recycling frame is arranged upward, and the opening of the recycling frame is lower than the packaging bag clamp.

[0013] According to some embodiments of the present application, the empty bag recycling mechanism comprises a recycling hopper, a pulverizer and a plastic granulator, the feeding port of the recycling hopper is arranged upward, the discharge port of the recycling hopper is in communication with the feeding port of the pulverizer, and the discharge port of the pulverizer is in communication with the feeding port of the plastic granulator.

[0014] According to some embodiments of the present application, the raw material storage mechanism is arranged on the machine base and located at the raw material station, and the raw material storage mechanism comprises a raw material carrier and a carrier driver, the raw material carrier is arranged on the machine base in a lifting manner, and the carrier driver is used to drive the raw material carrier to lift.

[0015] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0017] Fig. 1 It is a perspective view of the packaging bag unpacking machine of the first embodiment of the present application;

[0018] Fig. 2 It is a perspective view of the packaging bag unpacking machine of the second embodiment of the present application;

[0019] Fig. 3 It is a top view of the bag breaking and collecting mechanism of the embodiment of the present application.

[0020] REFERENCE NUMERALS:

[0021] Machine base 100, raw material station 101, unpacking station 102, recycling station 103;

[0022] Bag breaking and collecting mechanism 200, bag cutting knife 210, longitudinal knife strip 211, transverse knife strip 212, transverse bag cutting area 213, longitudinal bag cutting area 214, collector 220, collecting groove 221, collecting hopper 222;

[0023] Empty bag recycling mechanism 300;

[0024] Bag moving device 400, packaging bag clamp 410, bag moving driving mechanism 420, moving seat 421, horizontal driver 422, lifting driver 423;

[0025] Raw material storage mechanism 500, raw material stage 510, stage driver 520. DETAILED DESCRIPTION

[0026] Embodiments of the present application will be described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are for the purpose of explanation only and are not to be understood as limiting the present application.

[0027] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down and the like is based on the orientation or position relationship shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application.

[0028] In the description of the present application, the plural refers to two or more. If there is a description of the first, the second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0029] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0030] Reference Figs. 1 to 3The packaging bag opening machine of the utility model embodiment comprises a base 100, a bag breaking and collecting mechanism 200, an empty bag recycling mechanism 300 and a bag moving device 400. The base 100 is provided with a raw material station 101, an opening station 102 and a recycling station 103; the bag breaking and collecting mechanism 200 is arranged on the base 100 and located at the opening station 102, the bag breaking and collecting mechanism 200 comprises a bag cutting knife 210 and a collector 220, the bag cutting knife 210 is fixedly arranged relative to the base 100 and has an upward blade edge, the collector 220 has a collecting groove 221 with an upward notch, and the bag cutting knife 210 is located at the notch of the collecting groove 221; the empty bag recycling mechanism 300 is arranged on the base 100 and located at the recycling station 103; the bag moving device 400 is arranged on the base 100, the bag moving device 400 comprises a packaging bag clamp 410 and a bag moving driving mechanism 420, the packaging bag clamp 410 is movably arranged on the base 100 and can move between the raw material station 101, the opening station 102 and the recycling station 103, the packaging bag clamp 410 is higher than the bag cutting knife 210, the packaging bag clamp 410 can be lifted and lowered relative to the base 100, the bag moving driving mechanism 420 is used for driving the packaging bag clamp 410 to move, and the lower side of the packaging bag clamp 410 is provided with a grabbing part.

[0031] When the packaging bag opening machine works, the bag moving driving mechanism 420 drives the packaging bag clamp 410 to move to the raw material station 101, the packaging bag clamp 410 grabs the packaging bag through the grabbing part, then the packaging bag clamp 410 moves to the opening station 102 and drives the packaging bag to descend, the lower side of the packaging bag contacts the bag cutting knife 210 and is cut by the bag cutting knife 210 under its own gravity, the raw material flowing out of the packaging bag is collected by the collecting groove 221 of the collector 220, then the packaging bag clamp 410 moves the empty packaging bag to the empty bag recycling mechanism 300 for recycling; the packaging bag opening machine has the advantages that the static bag cutting knife 210 is adopted, the opening of the packaging bag is completed through the gravity of the packaging bag itself, thereby the safety hazard caused by the rotation of the bag cutting knife 210 to the production personnel can be avoided, and the use safety of the packaging bag opening machine is improved.

[0032] Specifically, since the bag cutting knife 210 is static and does not need to rotate, a part of the energy consumption of the packaging bag opening machine can be saved, and certain energy-saving effect is achieved.

[0033] Specifically, when the packaging bags are stored in the raw material station 101, they are usually stored layer by layer, each layer comprising five packaging bags, three of which are arranged horizontally and the other two are arranged vertically, and adjacent two layers are staggered, so that the packaging bags in each layer can be stably stacked.

[0034] In the embodiment, the bag cutting knife 210 comprises a longitudinal knife strip 211 and at least two transverse knife strips 212, the longitudinal knife strip 211 and the transverse knife strip 212 both extend in the horizontal direction, all the transverse knife strips 212 are parallel to each other, the longitudinal knife strip 211 and the transverse knife strip 212 are arranged in perpendicular intersection, and the cutting edges of the longitudinal knife strip 211 and the transverse knife strip 212 are located at the same height. The above structure, the longitudinal knife strip 211 and the transverse knife strip 212 are perpendicular to each other and are connected in cross, so that after the lower side of the packaging bag is cut, the piece formed always has at least one side connected to the main body of the packaging bag, thereby reducing the risk that the fragments generated by the packaging bag itself mix into the raw materials into the collector 220, and reducing the risk that the raw materials are not pure enough.

[0035] In the embodiment, the longitudinal knife strip 211 is provided with at least two, the transverse knife strip 212 is provided with at least three, the bag breaking and collecting mechanism 200 is provided with a transverse bag cutting area 213 and a longitudinal bag cutting area 214, the transverse bag cutting area 213 is formed by one longitudinal knife strip 211 and two adjacent transverse knife strips 212, and the longitudinal bag cutting area 214 is formed by one longitudinal knife strip 211 and three adjacent transverse knife strips 212.

[0036] Specifically, in the embodiment, the transverse knife strip 212 is arranged in the left-right direction, and the longitudinal knife strip is arranged in the front-rear direction. Since the packaging bag is usually rectangular, when the packaging bag is placed in the transverse direction, the lower side of the packaging bag can be cut by one longitudinal knife strip and two adjacent transverse knife strips, and the piece formed always has at least one side connected to the main body of the packaging bag. When the packaging bag is placed in the longitudinal direction, the lower side of the packaging bag can be cut by one longitudinal knife strip and three transverse knife strips, and the piece formed always has at least one side connected to the main body of the packaging bag. The bag cutting knife 210 can cut the packaging bag placed in the longitudinal direction and the packaging bag placed in the transverse direction, so that the applicability of the bag cutting knife 210 is stronger, and the bag cutting knife 210 is suitable for the conventional packaging bag stacking mode. Moreover, compared with the simple cross cutting mode, the present scheme can make the cutting range of the lower side of the packaging bag larger, and reduce the residual material in the packaging bag.

[0037] In the embodiment, the longitudinal knife strip 211 is provided with two, and the transverse knife strip 212 is provided with six. The above bag cutting knife 210 can allow five packaging bags, three packaging bags arranged in the transverse direction and two packaging bags arranged in the longitudinal direction, and the five packaging bags are opened at one time, so as to speed up the working efficiency of the opening machine, and make the equipment structure relatively compact, and be suitable for the conventional packaging bag stacking mode.

[0038] It can be imagined that in other embodiments, the number of longitudinal knife strips 211 can also be two, three, four or more, and the number of transverse knife strips 212 can also be two, three, four or more, and a person skilled in the art can select them according to actual needs.

[0039] In the embodiment, the cutting edges of the longitudinal cutter 211 and the transverse cutter 212 are sawtooth-shaped. The sawtooth-shaped cutting edges have sharp parts similar to point-like contacts, the lower side of the packaging bag is more easily cut by the sharp parts of the cutting edges first, and then the lower side of the packaging bag is gradually cut, so that the cutting bag knife 210 cuts the packaging bag more smoothly, reducing the risk that the cutting bag knife 210 cannot cut the packaging bag.

[0040] In the embodiment, the collector 220 is provided with a collection funnel 222, the collection funnel 222 forms a collection groove 221, and the cutting bag knife 210 is connected with the upper part of the collection funnel 222. The collection funnel 222 is arranged to facilitate the uniform collection and delivery of the granular raw materials flowing out of the packaging bag, and the collection and delivery effect is good.

[0041] Specifically, the discharge port of the collection funnel 222 can be communicated with a conveying pipeline to directly deliver the collected granular raw materials to a use device for use.

[0042] In the embodiment, the raw material station 101, the unpacking station 102, and the recycling station 103 are sequentially arranged along the left-right direction, the bag moving drive mechanism 420 includes a moving seat 421, a horizontal drive 422, and a lifting drive 423, the moving seat 421 is movably connected to the machine base 100 along the left-right direction, the horizontal drive 422 is used to drive the moving seat 421 to move left and right relative to the machine base 100, the packaging bag clamp 410 is movably connected to the moving seat 421, and the lifting drive 423 is used to drive the packaging bag clamp 410 to move up and down relative to the moving seat 421. The above layout makes the bag moving drive mechanism 420 have a relatively simple structure and be convenient to use.

[0043] Specifically, when the unpacking machine is in use, the horizontal drive 422 drives the moving seat 421 to move left, and drives the packaging bag clamp 410 to move to the raw material station 101, at this time, the packaging bag clamp 410 grabs the packaging bag of the raw material, then the moving seat 421 moves right to the unpacking station 102, at this time, the packaging bag clamp 410 and the packaging bag are located above the cutting bag knife 210, the lifting drive 423 drives the packaging bag clamp 410 to descend, so that the packaging bag also descends, then the lower side of the packaging bag contacts the cutting bag knife 210 and is cut, so that the granular raw material in the packaging bag flows out. Then the lifting drive 423 drives the packaging bag clamp 410 to ascend, drives the empty packaging bag to ascend, and the horizontal drive 422 drives the moving seat 421 and the packaging bag clamp 410 to move to the recycling station 103, that is, drives the empty packaging bag to move to the empty bag recycling mechanism 300, the packaging bag clamp 410 releases the empty packaging bag, and the empty bag is recycled.

[0044] Specifically, the base 100 is provided with a guide strip in the left-right direction, the moving seat 421 is provided with a pair of rollers, the guide strip is clamped between the pair of rollers, so that the moving seat 421 can move left and right relative to the base 100; the base 100 is provided with a rack in the left-right direction, the moving seat 421 is provided with a motor and a gear, the motor drives the gear to rotate, the gear is engaged with the rack, and the moving seat 421 is driven to move left and right.

[0045] In the first embodiment, the packaging bag clamp 410 is connected to the moving seat 421 through a guide column and a guide sleeve structure, the lifting driver 423 is connected to the moving seat 421 and adopts, for example, a pneumatic cylinder, an oil cylinder or an electric cylinder, and drives the packaging bag clamp 410 to lift.

[0046] In the second embodiment, the packaging bag clamp 410 is connected to the moving seat 421 through a telescopic frame to realize lifting, and the lifting driver 423 adopts a winch structure, that is, a motor drives a winding drum to rotate, a traction belt is wound on the winding drum, and the end of the traction belt is connected to the packaging bag clamp 410 to pull the packaging bag clamp 410 to lift.

[0047] It can be imagined that in other embodiments, the moving seat 421 can also be movable left and right relative to the base 100 through a sliding rail and sliding block structure or a guide column and guide sleeve structure, the horizontal driver 422 can adopt, for example, a pneumatic cylinder, an electric cylinder or an oil cylinder; the packaging bag clamp 410 can also adopt, for example, a sliding rail and sliding block structure to realize lifting relative to the moving seat 421, and the lifting driver 423 can adopt, for example, a motor, a lead screw and a lead screw nut structure to drive the packaging bag clamp 410 to lift.

[0048] It can be imagined that in other embodiments, the bag moving driving mechanism 420 can also adopt a three-axis mechanical hand to directly drive the packaging bag clamp 410 to move in three dimensions.

[0049] In some embodiments, the empty bag recycling mechanism 300 is a recycling frame, the opening of the recycling frame is upwardly arranged, and the opening of the recycling frame is lower than the packaging bag clamp 410. The empty packaging bag is stored through the recycling frame, and the structure is simple and easy to implement.

[0050] In other embodiments, the empty bag recycling mechanism 300 includes a recycling hopper, a crusher and a plastic granulator, the feeding port of the recycling hopper is upwardly arranged, the discharging port of the recycling hopper is in communication with the feeding port of the crusher, and the discharging port of the crusher is in communication with the feeding port of the plastic granulator. When the empty packaging bag is made of plastic material, the empty packaging bag falls into the recycling hopper, is crushed by the crusher, and then is sent into the plastic granulator for recycling and granulation, so that the empty packaging bag can be directly utilized, and the waste of resources is reduced.

[0051] In the first embodiment, a raw material storage mechanism 500 is further included, which is arranged on the base 100 and located at the raw material station 101, and includes a raw material carrier 510 and a carrier driver 520. The raw material carrier 510 is arranged on the base 100 in a vertically movable manner, and the carrier driver 520 is configured to drive the raw material carrier 510 to move vertically. In the first embodiment, the raw material storage mechanism 500 is arranged, and the packaging bags are stacked on the raw material carrier 510. After the top layer of the stacked packaging bags is removed, the carrier driver 520 drives the raw material carrier 510 to move upward, so as to facilitate the subsequent bag moving device 400 to grasp the top layer of the packaging bags, and improve the efficiency of grasping the packaging bags.

[0052] Specifically, the raw material carrier 510 can be movably connected to the base 100 in a vertical direction through a slide rail and slide block structure or a guide column and guide sleeve structure, and the carrier driver 520 can be an oil cylinder, an electric cylinder or a motor cooperating with a lead screw and a lead screw nut structure, which drives the raw material carrier 510 to move vertically.

[0053] In the second embodiment, the packaging bags can be directly stacked on the ground of the raw material station 101, and the packaging bag clamp 410 is directly moved to grasp the top layer of the stacked packaging bags through the lifting movement of the packaging rack clamp 410, so as to simplify the structure of the equipment.

[0054] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A packaging bag opening machine, characterized in that, include: The machine base (100) is equipped with a raw material station (101), a packaging station (102) and a recycling station (103); A bag-breaking and collecting mechanism (200) is disposed on the machine base (100) and located at the bag opening station (102). The bag-breaking and collecting mechanism (200) includes a bag-cutting knife (210) and a collector (220). The bag-cutting knife (210) is fixedly disposed relative to the machine base (100) with the blade facing upward. The collector (220) has a collecting groove (221) with the opening facing upward. The bag-cutting knife (210) is located at the opening of the collecting groove (221). An empty bag recycling mechanism (300) is disposed on the base (100) and located at the recycling station (103); A bag transfer device (400) is disposed on the machine base (100). The bag transfer device (400) includes a packaging bag clamp (410) and a bag transfer drive mechanism (420). The packaging bag clamp (410) is movably disposed on the machine base (100) and can move between the raw material station (101), the opening station (102) and the recycling station (103). The packaging bag clamp (410) can be raised and lowered relative to the machine base (100). The bag transfer drive mechanism (420) is used to drive the packaging bag clamp (410) to move. The lower side of the packaging bag clamp (410) has a gripping part.

2. The packaging bag opening machine according to claim 1, characterized in that: The bag cutter (210) includes a longitudinal blade (211) and at least two transverse blades (212). Both the longitudinal blade (211) and the transverse blades (212) extend horizontally. All the transverse blades (212) are parallel to each other. The longitudinal blade (211) and the transverse blades (212) are arranged perpendicularly to each other. The cutting edges of the longitudinal blade (211) and the transverse blades (212) are at the same height.

3. The packaging bag opening machine according to claim 2, characterized in that: At least two longitudinal blades (211) are provided, and at least three transverse blades (212) are provided. The bag-breaking and collecting mechanism (200) is provided with a transverse bag-cutting area (213) and a longitudinal bag-cutting area (214). The transverse bag-cutting area (213) is formed by one longitudinal blade (211) and two adjacent transverse blades (212). The longitudinal bag-cutting area (214) is formed by one longitudinal blade (211) and three adjacent transverse blades (212).

4. The packaging bag opening machine according to claim 3, characterized in that: There are two longitudinal blades (211) and six transverse blades (212).

5. The packaging bag opening machine according to claim 2, characterized in that: The blades of both the longitudinal blade (211) and the transverse blade (212) are serrated.

6. The packaging bag opening machine according to claim 1, characterized in that: The collector (220) is provided with a collection funnel (222), which forms the collection groove (221), and the bag cutter (210) is connected to the upper part of the collection funnel (222).

7. The packaging bag opening machine according to claim 1, characterized in that: The raw material station (101), the unpacking station (102), and the recycling station (103) are arranged sequentially in the left-right direction. The bag transfer driving mechanism (420) includes a moving base (421), a horizontal driver (422), and a lifting driver (423). The moving base (421) is movably connected to the machine base (100) in the left-right direction. The horizontal driver (422) is used to drive the moving base (421) to move left and right relative to the machine base (100). The packaging bag clamp (410) is vertically connected to the moving base (421). The lifting driver (423) is used to drive the packaging bag clamp (410) to move up and down relative to the moving base (421).

8. The packaging bag opening machine according to claim 1, characterized in that: The empty bag recycling mechanism (300) is a recycling frame with its opening facing upwards and lower than the packaging bag clamp (410).

9. The packaging bag opening machine according to claim 1, characterized in that: The empty bag recycling mechanism (300) includes a recycling funnel, a crusher, and a plastic granulator. The inlet of the recycling funnel faces upward, the outlet of the recycling funnel is connected to the inlet of the crusher, and the outlet of the crusher is connected to the inlet of the plastic granulator.

10. The packaging bag opening machine according to claim 1, characterized in that: It also includes a raw material storage mechanism (500), which is disposed on the base (100) and located at the raw material station (101). The raw material storage mechanism (500) includes a raw material platform (510) and a platform driver (520). The raw material platform (510) is vertically and vertically disposed on the base (100), and the platform driver (520) is used to drive the raw material platform (510) to rise and fall.