Bag breaking machine

Abstract

The present invention provides a bag breaking machine for opening packaging bags, the bag breaking machine comprises: a machine housing, the machine housing has a feed inlet and a positioning cavity, the packaging bag containing materials enters the positioning cavity from the feed inlet, the positioning cavity is used to position the packaging bag entering the machine housing; a first cutting assembly, the first cutting assembly is movably arranged in the positioning cavity to cut the packaging bag in the positioning cavity; a first driving assembly, the first driving assembly is connected to the first cutting assembly to drive the first cutting assembly to move linearly. The bag breaking machine of the present invention solves the problems of more paper bag debris mixed in the materials and more material residue in the waste bags in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging bags, and in particular to a bag breaking machine. Background Art

[0002] The paper bag breaking machine is a mechanical device that automatically feeds, breaks, separates the material bags, and shapes the waste bags of solid materials packaged in paper bags. The working principle of the paper bag breaking machine in the prior art is to cut the paper bags with a rotating blade or use a spiral to squeeze the paper bags until they are broken, and then use a rotating screen or a vibrating screen to screen out the waste bags and compress them by an extrusion device.

[0003] The above-mentioned bag breaking machine has been widely used in the industrial field, but the bag breaking machine in the prior art will produce a lot of paper bag debris when using bag breaking devices such as rotary cutting or squeezing paper bags. This paper bag debris will be mixed into the material and cause pollution to the material. In addition, the current bag breaking machine does not release the material cleanly after breaking the bag, and the residual amount of the material remaining in the waste bag is uncontrollable. This has caused the existing bag breaking machine to be less used in the food, medicine, new energy and other industries, and manual bag unpacking is still the main method, with low degree of automation and high cost. Summary of the invention

[0004] The main purpose of the present invention is to provide a bag breaking machine to solve the problem of a large amount of paper bag debris mixed in the material in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a bag opening machine for opening packaging bags, the bag opening machine comprising: a machine housing, the machine housing having a feed port and a positioning cavity, the packaging bag containing material enters the positioning cavity from the feed port, the positioning cavity is used to position the packaging bag entering the machine housing; a first cutting assembly, the first cutting assembly is movably arranged in the positioning cavity to cut the packaging bag in the positioning cavity; and a first driving assembly, the first driving assembly is connected to the first cutting assembly to drive the first cutting assembly to move linearly.

[0006] Furthermore, the bag breaking machine also includes: a pallet assembly, the pallet assembly has a supporting position and a discharging position, the pallet assembly is movably arranged in the machine housing, so that when the pallet assembly moves to the supporting position, the packaging bag containing the material is limited in the positioning cavity, and when the pallet assembly moves to the discharging position, the packaging bag is unloaded.

[0007] Furthermore, the support plate assembly is rotatably arranged on the machine housing, and the bag breaking machine also includes: a second driving assembly, which is connected to the support plate assembly to drive the support plate assembly to rotate between the supporting position and the discharging position.

[0008] Furthermore, a second cutting assembly is provided on the pallet assembly, and the second cutting assembly is arranged on the side of the pallet assembly facing the positioning cavity. The second cutting assembly includes a plurality of cutting pieces, and the plurality of cutting pieces are arranged at intervals on the pallet assembly so that after the packaging bag moves into the positioning cavity, the cutting pieces are used to pierce the packaging bag.

[0009] Furthermore, the bag breaking machine also includes: a pressing plate assembly, the pressing plate assembly having a positioning position and an avoidance position, the pressing plate assembly being movably arranged in the machine housing, so that when the pressing plate assembly moves to the positioning position, it forms a positioning cavity with the support plate assembly at the supporting position and the machine housing, and when the pressing plate assembly moves to the avoidance position, the packaging bag containing the material enters the positioning cavity from the feed port.

[0010] Furthermore, the pressing plate assembly is rotatably arranged on the machine housing, and the bag breaking machine further comprises: a third driving assembly, which is connected to the pressing plate assembly to drive the pressing plate assembly to rotate between the positioning position and the avoidance position.

[0011] Furthermore, the bag opening machine also includes: a blowing component, which is movably arranged in the machine housing, so that when the packaging bag containing the material enters the positioning cavity, the blowing component moves into the positioning cavity to blow air into the packaging bag to blow the material out of the packaging bag.

[0012] Furthermore, the blowing assembly includes a plurality of blowing needle tubes, which are arranged at intervals. The bag breaking machine also includes: a fourth driving assembly, which is connected to each of the blowing needle tubes respectively to drive the plurality of blowing needle tubes to move simultaneously.

[0013] Furthermore, a plurality of blowing holes are provided on the side wall of the blowing needle tube, and the bag breaking machine further comprises: an air pump assembly, which is respectively connected to the plurality of blowing needle tubes to blow air into the packaging bag through the blowing holes on the blowing needle tubes.

[0014] Furthermore, a bag discharge port is provided on the machine housing, and the bag breaking machine also includes: a push rod assembly, which is movably arranged in the machine housing to move the packaging bag to the bag discharge port after the packaging bag discharges the material, so that the packaging bag is discharged from the machine housing from the bag discharge port.

[0015] Furthermore, the bag breaking machine also includes a packaging assembly, which includes: two rollers, the two rollers are arranged opposite to each other, a packaging space is provided between the two rollers, and a push rod assembly is arranged relative to the packaging space to push the packaging bag into the packaging space for compression.

[0016] Furthermore, the bag breaking machine also includes: an air extraction component, which is connected to the machine housing to extract the gas in the machine housing to form a negative pressure in the machine housing.

[0017] Furthermore, a discharge barrel is provided on the machine housing, and the bag breaking machine further comprises: a filter component, which is provided on the discharge barrel so that the material in the packaging bag can be discharged out of the machine housing through the filter component.

[0018] Furthermore, the bag breaking machine also includes: a conveyor belt mechanism, which is connected to the feed port to transport the packaging bag containing the material to the feed port, so that the packaging bag enters the machine housing from the feed port.

[0019] Furthermore, the bag opening machine also includes: a closed door, which is hingedly connected to the upper end of the feed port, so that when the packaging bag containing the material enters, the closed door is pushed open to enter the feed port.

[0020] The bag breaking machine using the technical solution of the present invention has a positioning cavity for fixing the packaging bag inside. The packaging bag containing the material enters a sealed machine housing at the feed port. The feed port is located at the top of the machine housing and above the positioning cavity. The machine housing also includes an arc-shaped material guide plate, which is arranged between the feed port and the positioning cavity to guide the packaging bag into the positioning cavity. The first cutting component is located in the lower half of the positioning cavity. The first cutting component horizontally cuts three sides of the packaging bag to allow the material to flow out of the packaging bag. The first cutting component only cuts once in the horizontal direction to prevent the generation of excessive waste, thereby solving the problem of a large amount of paper bag debris mixed in the material in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 A schematic structural diagram of an embodiment of a bag breaking machine according to the present invention is shown;

[0023] Figure 2 A schematic diagram showing the internal structure of an embodiment of a bag breaking machine of the present invention is shown;

[0024] Figure 3 A cross-sectional view of an embodiment of a bag breaker of the present invention is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Machine housing; 11. Feed inlet; 12. Bag outlet; 13. Discharge barrel; 14. Closing door; 20. First cutting assembly; 21. First drive assembly; 30. Support plate assembly; 31. Second drive assembly; 40. Press plate assembly; 41. Third drive assembly; 50. Blowing assembly; 51. Blowing needle tube; 52. Fourth drive assembly; 60. Push rod assembly; 70. Packing assembly; 71. Drum; 80. Filter assembly; 90. Conveyor belt mechanism; 100. Adjustment plate. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] The present invention provides a bag breaking machine for opening packaging bags. Figures 1 to 3 The bag breaking machine includes: a machine housing 10, the machine housing 10 has a feed port 11 and a positioning cavity, the packaging bag containing the material enters the positioning cavity from the feed port 11, and the positioning cavity is used to position the packaging bag entering the machine housing 10; a first cutting assembly 20, the first cutting assembly 20 is movably arranged in the positioning cavity to cut the packaging bag in the positioning cavity; a first driving assembly 21, the first driving assembly 21 is connected to the first cutting assembly 20 to drive the first cutting assembly 20 to move linearly.

[0029] The bag breaking machine in the present invention has a positioning cavity for fixing the packaging bag. The packaging bag containing the material enters a sealed machine shell at the feed port. The feed port is located at the top of the machine shell and above the positioning cavity. The machine shell also includes an arc-shaped material guide plate, which is arranged between the feed port and the positioning cavity to guide the packaging bag into the positioning cavity. The first cutting component is located in the lower half of the positioning cavity. The first cutting component horizontally cuts three sides of the packaging bag to allow the material to flow out of the packaging bag. The first cutting component only cuts once in the horizontal direction to prevent the generation of excessive waste, thereby solving the problem of a large amount of paper bag debris mixed in the material in the prior art.

[0030] The bag breaker also includes: a pallet assembly 30, which has a supporting position and a discharging position. The pallet assembly 30 is movably arranged in the machine housing 10, so that when the pallet assembly 30 moves to the supporting position, the packaging bag containing the material is limited in the positioning cavity, and when the pallet assembly 30 moves to the discharging position, the packaging bag is unloaded. The pallet assembly 30 is rotatably arranged on the machine housing 10, and the bag breaker also includes: a second driving assembly 31, which is connected to the pallet assembly 30 to drive the pallet assembly 30 to rotate between the supporting position and the discharging position. A second cutting assembly is provided on the pallet assembly 30, and the second cutting assembly is arranged on the side of the pallet assembly 30 facing the positioning cavity. The second cutting assembly includes a plurality of cutting members, and the plurality of cutting members are arranged on the pallet assembly 30 at intervals, so that after the packaging bag moves into the positioning cavity, the cutting members are used to pierce the packaging bag.

[0031] The pallet assembly is rotatably disposed on the machine housing. When the pallet assembly is located at the supporting position, the pallet assembly is in a horizontal position to support the bottom of the packaging bag. When the pallet assembly is located at the discharging position, the pallet assembly is in a vertical state, and the material in the packaging bag leaks into the discharge barrel through the bottom of the positioning cavity. The first cutting assembly does not cut the side of the packaging bag opposite to the first cutting assembly during cutting, so as to avoid the bottom of the packaging bag falling into the material after cutting.

[0032] The bag breaking machine also includes: a pressing plate assembly 40, which has a positioning position and an avoidance position. The pressing plate assembly 40 is movably arranged in the machine housing 10, so that when the pressing plate assembly 40 moves to the positioning position, it forms a positioning cavity with the support plate assembly 30 at the supporting position and the machine housing 10, and when the pressing plate assembly 40 moves to the avoidance position, the packaging bag containing the material enters the positioning cavity from the feed port 11.

[0033] The support plate assembly in this embodiment is located at the bottom of the positioning cavity. The bag breaking machine in this embodiment also includes an adjustment plate 100, which is movably arranged and located on the left side of the positioning cavity. The pressing plate assembly is located at the top of the positioning cavity when in the positioning position, so that the support plate assembly, the adjustment plate, the pressing plate assembly and the machine housing together form a positioning cavity.

[0034] The pressing plate assembly 40 is rotatably disposed on the machine housing 10 . The bag breaking machine further comprises: a third driving assembly 41 , which is connected to the pressing plate assembly 40 to drive the pressing plate assembly 40 to rotate between the positioning position and the avoidance position.

[0035] The bag breaking machine also includes: a blowing assembly 50, which is movably arranged in the machine housing 10, so that when the packaging bag containing the material enters the positioning cavity, the blowing assembly 50 moves into the positioning cavity to blow air into the packaging bag, so that the material is blown out of the packaging bag. The blowing assembly 50 includes a plurality of blowing needle tubes 51, and the plurality of blowing needle tubes 51 are arranged at intervals. The bag breaking machine also includes: a fourth driving assembly 52, and the fourth driving assembly 52 is respectively connected to each blowing needle tube 51 to drive the plurality of blowing needle tubes 51 to move simultaneously. A plurality of blowing holes are provided on the side wall of the blowing needle tube 51. The bag breaking machine also includes: an air pump assembly, and the air pump assembly is respectively connected to the plurality of blowing needle tubes 51 to blow air into the packaging bag through the blowing holes on the blowing needle tube 51.

[0036] In this embodiment, when the packaging bag enters the positioning cavity, the blowing needle moves into the positioning cavity and is inserted into the interior of the packaging bag. Then the air pump supplies air to the blowing needle, and the pulse valve blows air to the blowing needle at intervals, thereby separating the material from the packaging bag, so that unloading is cleaner.

[0037] The machine housing 10 is provided with a bag discharge port 12, and the bag breaker also includes: a push rod assembly 60, which is movably arranged in the machine housing 10, so as to move the packaging bag to the bag discharge port 12 after the packaging bag discharges the material, so that the packaging bag is discharged from the machine housing 10 from the bag discharge port 12. The bag breaker also includes a packing assembly 70, which includes: two rollers 71, the two rollers 71 are arranged opposite to each other, and there is a packing space between the two rollers 71, and the push rod assembly 60 is arranged relative to the packing space to push the packaging bag into the packing space for compression. The bag breaker also includes: an exhaust assembly, which is connected to the machine housing 10 to extract the gas in the machine housing 10, so that a negative pressure is formed in the machine housing 10.

[0038] Preferably, the exhaust component includes a fan and a filter device. When the exhaust component extracts gas from the machine body, the gas is first filtered through the filter device, and then the gas is extracted to the outside of the machine housing by the fan. The filter device is preferably a filter cloth.

[0039] The machine housing 10 is also provided with a discharge barrel 13, and the bag breaking machine further includes: a filter assembly 80, which is arranged on the discharge barrel 13, so that the material in the packaging bag is discharged from the machine housing 10 through the filter assembly 80. The bag breaking machine further includes: a conveyor belt mechanism 90, which is connected to the feed port 11 to transport the packaging bag containing the material to the feed port 11, so that the packaging bag enters the machine housing 10 from the feed port 11.

[0040] The bag opening machine further comprises: a closed door 14 , which is hingedly connected to the upper end of the feed inlet 11 , so that when a packaging bag containing materials enters, the closed door 14 is pushed open to enter the feed inlet 11 .

[0041] The closed door in this embodiment is arranged on the inner side of the feed port. When the packaging bag enters the feed port from the outside, the closed door can be pushed open. After the packaging bag comes in, the closed door automatically closes under the action of its own weight to prevent the material from flying out.

[0042] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0043] like Figures 1 to 3 As shown, a paper bag breaking machine of the present invention includes a conveyor belt mechanism 90, a closed door 14, a machine housing, a pressing plate assembly, an air blowing assembly, a packaging assembly, a first cutting assembly, an adjusting plate 100, and a supporting plate assembly.

[0044] The closed door 14 is located at the end of the conveyor belt mechanism, and the feed port is also provided with a sealing strip and a proximity switch. The closed door is located behind the sealing strip, and the closed position fits the sealing strip.

[0045] The machine housing is located below the feed port and includes a front inspection door, a left inspection door, a right inspection door, an upper sealing plate, and a rear sealing plate. The front inspection door, the left inspection door, and the right inspection door are hinged doors, each with a set of door magnetic switches.

[0046] The pressure plate assembly includes a side pressure plate, and the third driving assembly includes two driving cylinders for driving the side pressure plate to rotate.

[0047] The air blowing assembly includes a pulse valve and four air blowing needles. The fourth driving assembly includes two driving cylinders. The front end of the air blowing needle is designed as a triangular pyramid and an air blowing hole is opened on the side.

[0048] The waste bag discharge device includes a packaging assembly and a push rod assembly. The push rod assembly includes a bag pushing plate and two driving cylinders. The packaging assembly includes two rollers 71 arranged opposite to each other and a driving motor. The driving motor is used to drive at least one of the two rollers to rotate so that the packaging bags can be discharged from the bag discharge port 12 driven by the rollers.

[0049] The first cutting component includes a cutting knife, and the first driving component includes a driving rodless cylinder to drive the rodless cylinder to move linearly to drive the cutting knife to move horizontally to cut the packaging bag. When cutting, the cutting knife is set to enter the position in the positioning cavity so that the cutting knife cuts both sides of the packaging bag and the side close to the cutting knife, and retains the side of the packaging bag away from the cutting knife to prevent the packaging bag from falling into the material after the packaging bag is completely cut.

[0050] The support plate assembly 30 comprises a bottom flap, which is arranged at the bottom of the positioning cavity and has a second cutting assembly.

[0051] The second cutting assembly includes a plurality of cutting pieces. Preferably, the cutting pieces are sharp protrusions such as nails or needles so as to pierce the bottom of the packaging bag. The second driving assembly includes two driving cylinders for driving the bottom flap to rotate.

[0052] The bottom dust removal device includes a discharge barrel, a fan, a pulse valve, a screen, and a level switch. The discharge barrel has an inlet end for feeding and an outlet for discharging. The filter component is arranged at the inlet end to filter out impurities such as paper bag debris. The filter component is preferably a screen. The exhaust component includes a fan to extract the gas in the machine housing, thereby forming a negative pressure in the machine housing to prevent the material from flying. The level switch is used to detect the material in the discharge barrel or to detect whether the discharge barrel continues to discharge material.

[0053] When used specifically, the main process steps are as follows:

[0054] 1. The packaging bag material is transported to the feed port at a uniform speed by the conveying mechanism;

[0055] 2. The closed door at the feed inlet is opened under the push of the packaging bag, and the packaging bag flips over by its own weight and the bottom falls on the pallet assembly, and a nail is inserted into the bottom of the packaging bag;

[0056] 3. The side pressure plate assembly rotates under the action of the cylinder to press the packaging bag;

[0057] 4. The cylinder of the blowing assembly starts to move, and the blowing needle is inserted into the packaging bag;

[0058] 5. The first cutting assembly cuts the bottom of the paper bag on three sides except the side close to the drum;

[0059] 6. The support plate assembly rotates to a vertical state, and the material flows out of the first cutting assembly by its own weight, and the blowing assembly blows pulse air into the bag to assist the flow;

[0060] 7. The empty packaging bag is pushed toward the drum by the push rod assembly and flattened and discharged under the rotation of the drum.

[0061] 8. The generated dusty air is filtered by the bottom dust removal device and then discharged;

[0062] The outstanding features of the present invention are that the packaging bag is fixed, the first cutting component cuts three sides with only one knife, and the bag unpacking process uses blowing to assist flow inside the packaging bag:

[0063] The packaging bag is fixed by the air blowing needle tube and the pressure plate assembly, and the material flows out from the bottom. During the outflow process, it does not contact the outer wall of the paper bag, which greatly improves the cleanliness of the material. The design of only cutting one knife greatly reduces the possibility of debris in the packaging bag;

[0064] The spraying flow-aiding method can effectively remove the materials adhering to the inner wall of the packaging bag by blowing pulse air into the packaging bag and make the bag wall shake, so that the materials, especially those that are easy to bridge and stick to the wall, can be discharged cleanly, greatly reducing the residual rate of materials in the packaging bag;

[0065] It adopts a fully automatic bag breaking mode. The whole bag breaking process does not require human intervention. The bag breaking speed can reach 120 to 150 bags per hour. The bag breaking efficiency is high and the degree of automation is high.

[0066] The entire bag breaking process takes place in a negative pressure environment, and dust has little pollution to the environment.

[0067] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0069] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0070] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0071] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bag opening machine for opening packaging bags, characterized in that: The bag breaking machine comprises: A machine housing (10), the machine housing (10) having a feed inlet (11) and a positioning cavity, the packaging bag containing the material enters the positioning cavity from the feed inlet (11), and the positioning cavity is used to position the packaging bag entering the machine housing (10); a first cutting assembly (20), the first cutting assembly (20) being movably disposed in the positioning cavity so as to cut the packaging bag in the positioning cavity; a first driving assembly (21), the first driving assembly (21) being connected to the first cutting assembly (20) to drive the first cutting assembly (20) to move linearly, and the first cutting assembly (20) only cuts once in a horizontal direction, and the first cutting assembly (20) comprises a cutting knife; The machine housing (10) is provided with a bag discharge port (12), and the bag breaking machine further comprises: a push rod assembly (60), the push rod assembly (60) being movably disposed in the machine housing (10) so as to move the packaging bag to the bag discharge port (12) after the packaging bag discharges the material, so that the packaging bag is discharged from the machine housing (10) through the bag discharge port (12); The bag breaking machine further comprises a packing component (70), wherein the packing component (70) comprises: Two rollers (71), the two rollers (71) are arranged opposite to each other, a packaging space is provided between the two rollers (71), and the push rod assembly (60) is arranged opposite to the packaging space to push the packaging bag into the packaging space for compression; The bag breaking machine also includes: a pallet assembly (30), the pallet assembly (30) having a supporting position and a material discharging position, the pallet assembly (30) being movably arranged in the machine housing (10) so that when the pallet assembly (30) moves to the supporting position, the packaging bag containing the material is limited in the positioning cavity, and when the pallet assembly (30) moves to the material discharging position, the packaging bag is discharged; The support plate assembly (30) is rotatably arranged on the machine housing (10), and the bag breaking machine further comprises: a second driving assembly (31), the second driving assembly (31) being connected to the support plate assembly (30) to drive the support plate assembly (30) to rotate between the supporting position and the discharging position; The bag breaking machine further comprises: a pressing plate assembly (40), the pressing plate assembly (40) having a positioning position and an avoidance position, the pressing plate assembly (40) being movably arranged in the machine housing (10), so that when the pressing plate assembly (40) moves to the positioning position, it forms the positioning cavity with the support plate assembly (30) at the supporting position and the machine housing (10), and when the pressing plate assembly (40) moves to the avoidance position, the packaging bag containing the material enters the positioning cavity from the feed port (11); The pressing plate assembly (40) is rotatably arranged on the machine housing (10), and the bag breaking machine further comprises: a third driving assembly (41), the third driving assembly (41) being connected to the pressing plate assembly (40) to drive the pressing plate assembly (40) to rotate between the positioning position and the avoidance position; The bag opening machine further comprises: an air blowing component (50), the air blowing component (50) being movably arranged in the machine housing (10), so that when the packaging bag containing the material enters the positioning cavity, the air blowing component (50) moves into the positioning cavity to blow air into the packaging bag, so that the material is blown out of the packaging bag; The air blowing assembly (50) comprises a plurality of air blowing needle tubes (51), wherein the plurality of air blowing needle tubes (51) are arranged at intervals, and the bag breaking machine further comprises: a fourth driving assembly (52), wherein the fourth driving assembly (52) is connected to each of the air blowing needle tubes (51) respectively to drive the plurality of air blowing needle tubes (51) to move simultaneously; A plurality of blowing holes are provided on the side wall of the blowing needle tube (51), and the bag opening machine further comprises an air pump assembly, wherein the air pump assembly is respectively connected to the plurality of blowing needle tubes (51) so as to blow air into the packaging bag through the blowing holes on the blowing needle tubes (51).

2. The bag breaking machine according to claim 1, characterized in that: The pallet assembly (30) is provided with a second cutting assembly, the second cutting assembly being arranged on a side of the pallet assembly (30) facing the positioning cavity, the second cutting assembly comprising a plurality of cutting members, the plurality of cutting members being arranged at intervals on the pallet assembly (30) so that after the packaging bag moves into the positioning cavity, the cutting members are used to pierce the packaging bag.

3. The bag breaking machine according to claim 1, characterized in that: The bag breaking machine also includes: An air extraction component is connected to the machine housing (10) to extract gas from the machine housing (10) so as to form a negative pressure in the machine housing (10).

4. The bag breaking machine according to claim 1, characterized in that: The machine housing (10) is also provided with a discharge barrel (13), and the bag breaking machine further comprises: A filter assembly (80), wherein the filter assembly (80) is arranged on the discharge barrel (13) so that the material in the packaging bag is discharged outside the machine housing (10) through the filter assembly (80).

5. The bag breaking machine according to claim 1, characterized in that: The bag breaking machine also includes: A conveyor belt mechanism (90) is connected to the feed port (11) to transport the packaging bag containing the material to the feed port (11), so that the packaging bag enters the machine housing (10) from the feed port (11).

6. The bag breaking machine according to claim 1, characterized in that: The bag breaking machine also includes: A closed door (14) is hingedly connected to the upper end of the feed opening (11) so that when the packaging bag containing the material enters, the closed door (14) is pushed open to enter the feed opening (11).

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