Preliminary cutting bag breaking device and automatic bag opening and discharging equipment thereof

Abstract

The utility model relates to a primary cutting bag breaking device and automatic bag opening and discharging equipment thereof, and the primary cutting bag breaking device comprises a material guiding plate which is used for bearing a bag to be cut; the cutting mechanism comprises at least one group of parallel roll shaft cutters and a driving device for driving the roll shaft cutters, the roll shaft cutters are arranged below the material guiding plate, and cutter head parts of the roll shaft cutters extend to the upper part of the material guiding plate to form a cutting working surface; the roll shaft cutter comprises a roll shaft body and a plurality of cutting blades distributed in the circumferential direction of the roll shaft body, and the cutting blades on the adjacent roll shafts are arranged in a staggered mode. The primary cutting bag breaking device can replace manual cutting and screening work, and the production efficiency is effectively improved; the automatic bag opening and discharging equipment comprises a supporting platform, a material screening barrel, a driving device and the primary cutting bag breaking device, and the primary cutting bag breaking device is correspondingly arranged on one side of a feeding opening of the material screening barrel and conducts roll shaft cutting on bags. And the automatic bag opening and discharging equipment performs graded cutting on the bags, so that the bag opening efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to garbage treatment technical field especially relates to a garbage bag initial cutting bag breaking device and automatic bag opening and unloading equipment. BACKGROUND

[0002] In the process of sorting and treating household garbage, the bag breaking step of plastic bags is one of the key bottlenecks affecting the overall sorting efficiency. The so-called "bag breaking machine" on the market is mostly designed based on the principle of traditional plastic crushers or shredders, and its working method is simple and rough: the whole bag of garbage (including plastic bags and their internal items) is directly put into the machine for indiscriminate crushing. This processing method causes all kinds of recyclable materials (such as paper, plastic bottles, metal cans, etc.) in the bag to be crushed into small pieces, greatly increasing the difficulty of subsequent sorting, and even making some resources lose their recycling value due to excessive crushing.

[0003] Due to the lack of truly efficient automated bag breaking equipment, many garbage sorting sites still use the traditional manual bag breaking method: workers hold knives to cut open plastic bags one by one, and then sort the contents. This method not only has low efficiency and slow processing speed, but also has high operating costs due to its high dependence on manpower, which seriously restricts the scale and economic benefits of garbage resource processing.

[0004] In the prior art, the automatic bag opening and unloading equipment usually uses a single cutting mechanism, which cannot fully cut the bags, resulting in low bag opening efficiency and material residues in the packaging bags. At the same time, the prior art lacks a design for grading cutting of bags, which cannot adopt a reasonable cutting method for bags of different sizes, affecting the effect of bag opening and unloading. SUMMARY

[0005] In the prior art, there are problems such as inability to grade cut bags, low bag opening efficiency, and serious material residues. Therefore, in order to solve the above problems, the utility model provides an initial cutting bag breaking device and automatic bag opening and unloading equipment.

[0006] The technical solution of the utility model to solve the above technical problems is as follows: an initial cutting bag breaking device, which comprises a material guiding plate and a cutting mechanism; the material guiding plate is used to carry the bags to be cut; the cutting mechanism comprises at least one set of mutually parallel roller shaft cutters and a driving device driving the roller shaft cutters, the roller shaft cutters are arranged below the material guiding plate, and the cutter head part thereof extends above the material guiding plate to form a cutting working surface; wherein the roller shaft cutter comprises a roller shaft body and a plurality of cutting blades distributed along the circumference thereof, and the cutting blades on adjacent roller shafts are arranged in a staggered manner.

[0007] The beneficial effects of the above further scheme are that the initial cutting bag breaking device can replace manual cutting and screening work, effectively improving production efficiency.

[0008] On the basis of the above technical solutions, the utility model further can make improvement as follows.

[0009] Further, the material guiding plate is provided with limiting baffle edges extending upward on both sides, forming a material guiding channel.

[0010] Further, the utility model further includes: vibration generating device, the vibration generating device includes eccentric wheel motor and elastic support component, the eccentric wheel motor is fixedly installed at the bottom of material guiding plate, the elastic support component is connected between material guiding plate and fixed base, constitutes vibration buffer mechanism.

[0011] Further, the utility model further includes: metal impurity removing device, is arranged above cutting working surface, the metal impurity removing device includes: magnetic adsorption unit and rotary drive mechanism, the rotary drive mechanism is used to drive the magnetic adsorption unit from the reciprocating movement of the working area to the working area outside.

[0012] Further, the metal impurity removing device is further provided with scraping parts for separating the metal impurities adsorbed on the magnetic adsorption unit.

[0013] Further, the magnetic adsorption unit is provided with adjustable conveying belt on the periphery, the rotary drive mechanism synchronously drives the movement of magnetic adsorption unit and conveying belt, and the spacing between the conveying belt and magnetic adsorption unit is adjustable.

[0014] The beneficial effect of the above further scheme is that the metal impurity removing device is used to adsorb the metal materials preliminarily divided by the initial cutting and bag breaking device, so as to avoid the metal materials from entering the screen drum and damaging the cutter, and if the metal materials enter the screen drum, the screen drum will also be damaged, and in serious cases, the screen drum will be scrapped as a whole.

[0015] The utility model discloses a technical scheme for solving the above technical problems: an automatic bag breaking and discharging equipment, including support platform, screen drum, drive device and initial cutting and bag breaking device, the screen drum is arranged on the support platform and is driven by the drive device to rotate the screen drum, and the two ends of the screen drum are respectively inlet and outlet, the initial cutting and bag breaking device is correspondingly arranged at the inlet side of the screen drum and carries out roller shaft cutting to the bag.

[0016] On the basis of the above technical solutions, the utility model further can make improvement as follows.

[0017] Further, the utility model further includes: rough cutting and bag breaking device, the rough cutting and bag breaking device includes: rough cutting unit installed on the outer wall of screen drum, and the cutter head of the rough cutting unit extends into the inner cavity of screen drum, guide inner plate arranged between adjacent cutter heads, buffer mechanism for reducing the impact force of cutter head, and sliding wire power supply system for providing power for the motor of rough cutting unit.

[0018] Further, the buffering mechanism comprises a spring assembly arranged in the rough cutting bag machine set, and the spring assembly is connected with the cutter head, so that the cutter head has axial elastic displacement during cutting.

[0019] Further, the fine cutting bag breaking device comprises a fine cutting machine set driven by a motor and powered through a sliding wire groove, and the rake angle of the cutter of the fine cutting machine set is arranged to be 5-25°, and the cutter surface is provided with a groove or texture structure; the protection assembly comprises a plurality of inner side plates arranged on the inner wall of the screening cylinder and a guard ring arranged adjacent to the cutter; and the flow guide inner plate is arranged in the coarse material area and / or the fine material area of the screening cylinder in a uniform distribution straight plate structure or a segmented manner.

[0020] The automatic bag breaking and discharging equipment has the advantages that: the bag is subjected to a grading cutting system (such as roller shaft cutting, cylinder blade cutting and intermediate blade supplementary cutting) through the primary cutting bag breaking device, the rough cutting bag breaking device and the fine cutting bag breaking device, the bag breaking and discharging efficiency is improved, the situation that materials are left in the packaging bag is reduced, and the problem that the bag body cannot be fully disassembled in the prior art is solved.

[0021] The grading cutting system of the automatic bag breaking and discharging equipment, the primary cutting bag breaking device can preliminarily cut the bags entering the screening cylinder, the rough cutting bag breaking device can further cut the coarse materials, and the fine cutting bag breaking device can supplementarily cut the fine materials, so that the grading cutting system can adopt a reasonable cutting mode for bags of various specifications, and the bag breaking and discharging effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structure schematic view of the primary cutting bag breaking device;

[0023] Figure 2 is a structure schematic view of the automatic bag breaking and discharging equipment;

[0024] Figure 3 is Figure 2 is an enlarged structure schematic view of the primary cutting bag breaking device;

[0025] Figure 4 is a structure schematic view of the metal impurity removing device;

[0026] Figure 5 is a sectional view of the automatic bag breaking and discharging equipment;

[0027] In the drawings, the components represented by the respective reference numerals are listed as follows:

[0028] 1 - support platform;

[0029] 2 - screening cylinder; 201 - feeding port; 202 - discharging port; 203 - coarse screening hole; 204 - fine screening hole; 205 - material receiving disc;

[0030] 3 - drive device; 301 - motor; 302 - reduction gearbox; 303 - runner;

[0031] 4 - primary cutting bag breaking device; 401 - material guide plate; 402 - roller cutter; 4022 - cutting blade; 403 - drive device; 404 - limiting baffle; 405 - vibration generating device; 4051 - eccentric motor; 4052 - elastic support assembly; 406 - metal impurity removing device; 4061 - magnetic adsorption unit; 4062 - rotary drive mechanism; 4064 - adjustable conveyor belt;

[0032] 5 - rough cutting bag breaking device; 501 - rough cutting unit; 5011 - cutter head; 5012 - motor; 502 - flow guide inner plate; 503 - slide wire power supply system;

[0033] 6 - fine cutting bag breaking device; 601 - fine cutting unit; 6011 - cutter; 602 - protection assembly; 6021 - flow guide inner plate; 6022 - baffle ring. DETAILED DESCRIPTION

[0034] The principles and characteristics of the present application are described below in conjunction with the accompanying drawings, and the examples are only used to explain the present application and are not intended to limit the scope of the present application.

[0035] An embodiment of a primary cutting bag breaking device (as shown in Figures 1 to 5 ).

[0036] As shown in Figure 1 : A primary cutting bag breaking device 4, comprising a material guide plate 401 and a cutting mechanism; the material guide plate 401 is used to carry the bag to be cut; the cutting mechanism comprises at least one set of parallel roller cutters 402 and a drive device 403 driving the roller cutters 402, the roller cutters 402 are arranged below the material guide plate 401, and the cutter head part thereof extends above the material guide plate 401 to form a cutting working surface; wherein the roller cutter 402 comprises a roller body and a plurality of cutting blades 4022 distributed along the circumference thereof, and the cutting blades 4022 on adjacent rollers are arranged in a staggered manner.

[0037] The beneficial effects of the above preferred scheme are that the primary cutting bag breaking device 4 can replace manual cutting and screening work, and effectively improve production efficiency.

[0038] On the basis of the above technical scheme, the present application can also be improved as follows.

[0039] Preferably, the material guide plate 401 is provided with upwardly extending limiting baffle 404 on both sides to form a material guide channel.

[0040] As shown in Figure 4: Preferably, further comprising: a vibration generating device 405, the vibration generating device 405 comprising an eccentric motor 4051 and an elastic support assembly 4052; the eccentric motor 4051 is fixedly installed at the bottom of the material guiding plate 401; the elastic support assembly 4052 is connected between the material guiding plate 401 and the fixed base, constituting a vibration damping mechanism.

[0041] As Figure 4 : Preferably, further comprising: a metal impurity removing device 406, arranged above the cutting working surface; the metal impurity removing device 406 comprises: a magnetic adsorption unit 4061 and a rotary driving mechanism 4062; the rotary driving mechanism 4062 is used to drive the magnetic adsorption unit 4061 to move reciprocatingly from the working area to the outside of the working area.

[0042] Preferably, the metal impurity removing device 406 is further provided with a scraping component (not shown in the figure) for separating the metal impurities adsorbed on the magnetic adsorption unit 4061.

[0043] Preferably, an adjustable conveyor belt 4064 is sleeved outside the magnetic adsorption unit 4061; the rotary driving mechanism 4062 synchronously drives the magnetic adsorption unit 4061 and the conveyor belt to move; the spacing between the conveyor belt and the magnetic adsorption unit 4061 is adjustable.

[0044] The beneficial effects of the above-mentioned preferred scheme are: the metal impurity removing device 406 is used to adsorb the metal materials preliminarily divided by the initial cutting and bag opening device 4, so as to avoid the metal materials from entering the screen cylinder 2 and damaging the cutter, and if the metal materials enter the screen cylinder 2, the screen cylinder 2 will also be damaged, and in severe cases, the screen cylinder 2 will be scrapped as a whole.

[0045] Working principle: the bag slides into the cutting area through the material guiding plate 401, the staggered blades form a continuous shearing force to longitudinally split the packaging bag. The vibration generating device 405 makes the materials uniformly dispersed through high-frequency micro-amplitude vibration (amplitude ±2mm) to avoid accumulation. The metal impurity removing device 406 adsorbs iron filings and other metal materials, and after rotating out, the scraping component automatically removes them.

[0046] Technical effects: 1. Replacing manual cutting and screening to improve production efficiency; 2. Vibration anti-blocking design to avoid material residues and improve production efficiency; 3. Magnetic attraction impurity removal to protect subsequent equipment and reduce failure rate.

[0047] An embodiment of an automatic bag opening and unloading equipment (as shown in Figures 1 to 5 ).

[0048] As Figure 2The utility model provides an automatic bagging unloading equipment, including support platform 1, sieve cylinder 2, drive arrangement 3 and the preliminary cutting bag breaking device 4, sieve cylinder 2 sets up on support platform 1 and drive arrangement 3 drives sieve cylinder 2 rotation, and the both ends of sieve cylinder 2 are feed inlet 201 and discharge port 202 respectively, and the preliminary cutting bag breaking device 4 is correspondingly arranged at the side of feed inlet 201 of sieve cylinder 2 and carries out roller cutting to bag.

[0049] Specifically, the drive device 3 includes a motor 301, a reduction gearbox 302, and a rotating wheel 303. The motor 301 drives the rotating wheel 303 to rotate the sieve cylinder 2 through the reduction gearbox 302. The rotating wheel 303 can be a tire, which has a certain elasticity to reduce the pressure of the sieve cylinder 2 rotation and ensure the smoothness of the sieve cylinder 2 rotation. The feed inlet 21 of the sieve cylinder 2 is higher than the discharge port 22, and the inclination of the sieve cylinder 2 is 3 to 25 degrees, preferably 6 degrees. The transmission mode of the reduction gearbox 302 includes chain, belt, or gear set, etc.

[0050] Optionally, another embodiment of the drive device 3 further includes a control unit (not shown in the figure) including a frequency converter (not shown in the figure). The frequency converter adjusts the motor 301 speed according to the voltage change detected during the motor 301 operation, which can reduce the motor 301 load and avoid overheating of the motor.

[0051] Based on the above technical solutions, the utility model can also be improved as follows.

[0052] Preferably, it further includes a rough cutting bag breaking device 5, which includes a rough cutting unit 501 installed on the outer wall of the sieve cylinder 2, with a cutter head 5011 extending into the inner cavity of the sieve cylinder 2, a flow guide inner plate 502 arranged between adjacent cutter heads 5011, a buffer mechanism (not shown in the figure) for reducing the impact force of the cutter head 5011, and a sliding wire power supply system 503 providing power for the motor 5012 of the rough cutting unit 501.

[0053] Preferably, the buffer mechanism (not shown in the figure) includes a spring assembly arranged inside the rough cutting bag unit, and the spring assembly (not shown in the figure) is connected with the cutter head 5011, so that the cutter head 5011 has axial elastic displacement during cutting.

[0054] Preferably, it further comprises a fine cutting bag breaking device 6, which comprises a fine cutting unit 601 driven by a motor and powered by a sliding slot, with a rake angle of the cutter 6011 set to 5-25°, and a groove or texture structure on the cutter surface; a protection assembly 602 comprising a plurality of guide inner plates 6021 arranged on the inner wall of the screening cylinder 2 and a guard ring 6022 arranged adjacent to the cutter; wherein the guide inner plates 6021 are arranged in a straight plate structure or a segmented structure in the coarse material area and / or the fine material area of the screening cylinder 2.

[0055] Preferably, the inclination of the screening cylinder 2 is 3-25°, and 6° is preferred.

[0056] Preferably, the guide plate 401 has an angle of 10-75°, and 45° is preferred.

[0057] Preferably, the height of the guard ring is 5-10 cm, the height of the guide inner plate is 8-20 cm, the height of the guard ring is less than that of the guide inner plate, and the distance between the guard ring and the cutter head of the fine cutting bag unit is 1-2 cm, and 1.5 cm is preferred.

[0058] Specifically, the coarse material area of the screening cylinder 2 is provided with a coarse sieve hole 203 with a hole diameter of 8-12 cm, and the fine material area of the screening cylinder 2 is provided with a fine sieve hole 204 with a hole diameter of 2-7 cm, and an receiving disc 205 is arranged below the coarse sieve hole 203 and the fine sieve hole 204.

[0059] Workflow

[0060] (1) Feeding stage: The material bag is conveyed to the guide plate 401 of the primary cutting bag breaking device 4 by the conveying belt, and the two side limiting edges 404 guide the bag to move in a certain direction.

[0061] (2) Primary cutting: The roller cutter 402 rotates under the drive of the driving device 403, and the staggered cutting blades 4022 form a shearing action. The vibration generating device 405 generates high-frequency micro-vibration through the eccentric motor 4051, and cooperates with the elastic support assembly 4052 to promote the flow of the bag.

[0062] (3) Metal separation: The magnetic adsorption unit 4061 adsorbs the metal impurities generated in the cutting process, and the rotary drive mechanism 4062 periodically removes them from the working area, and the scraping component removes the adsorbed materials.

[0063] (4) Secondary cutting: After the bag enters the screening cylinder 2, the negative chamfer cutter 5013 of the coarse cutting unit 501 performs coarse cutting, and the spring assembly 5031 of the buffer mechanism 5031 absorbs the impact force.

[0064] (5) Fine processing: the fine cutting unit 601 adopts a 5° to 25° rake angle cutter 6011 for supplementary cutting, and the retaining ring 6022 restricts the flow path of the fine materials.

[0065] (6) Graded discharge: the coarse materials fall into the receiving tray 205 through the coarse sieve hole 203, the fine materials are separated through the fine sieve hole 204, and the residues are discharged from the discharge port 202.

[0066] The utility model discloses the beneficial effect is: the utility model discloses through setting up initial cutting bag breaking device, coarse cutting bag breaking device and fine cutting bag breaking device, carries out grading cutting system (such as roller cutting to cylinder blade cutting to intermediate blade supplementary cutting) to the bag, improves the bag opening efficiency, reduces the material residual in the packing bag case, solves the problem that the prior art cannot fully dismantle the bag.

[0067] The utility model discloses the grading cutting system of automatic bag opening and discharging equipment, the initial cutting bag breaking device can carry out the preliminary cutting to the bag of entering the screening cylinder, the coarse cutting bag breaking device can carry out further cutting to the coarse material, the fine cutting bag breaking device can carry out supplementary cutting to the fine material, and the grading cutting system can adopt reasonable cutting mode to the bag of multiple specifications, and this improves the effect of bag opening and discharging.

[0068] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "parallel", "rotation", "radial", "circumferential", "vertical", "upper", "lower", "front", "rear", "axial" is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0069] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second", "third", "fourth", "fifth", "sixth", "seventh" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0070] In the utility model, unless another definite provision and limitation, the term " install ", " link ", " connect ", " fix ", " articulate " and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's interaction relationship, unless another definite limitation.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0071] In the utility model, unless another definite provision and limitation, first feature is " on " or " under " second feature can be that first and second features directly contact, or first and second features indirectly contact by intermediate medium.Moreover, first feature " above ", " over " and " on " second feature can be that first feature is directly above or obliquely above second feature, or just indicates that the horizontal height of first feature is higher than that of second feature.First feature " below ", " under " and " under " second feature can be that first feature is directly below or obliquely below second feature, or just indicates that the horizontal height of first feature is less than that of second feature.

[0072] In the description of the specification, the description of the terms " one embodiment ", " some embodiments ", " example ", " specific example " or " some examples " means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model.In the specification, the illustrative description of the above terms does not necessarily refer to 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.In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0073] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model, and the skilled in the art can change, modify, replace and modify the above-mentioned embodiments within the scope of the utility model.

Claims

1. A primary cutting and bag breaking device, characterized in that: the primary cutting and bag breaking device comprises a material guiding plate and a cutting mechanism; the material guiding plate is used to carry the bag to be cut; the cutting mechanism comprises at least one set of mutually parallel roller cutters and a driving device for driving the roller cutters, the roller cutters are arranged below the material guiding plate, and the cutter head parts thereof extend above the material guiding plate to form a cutting working surface; wherein the roller cutter comprises a roller body and a plurality of cutting blades distributed along the circumference of the roller body, and the cutting blades on adjacent rollers are arranged in a staggered manner. The material guiding plate is provided with upwardly extending limiting flanges on both sides to form a material guiding channel. Further comprising: a vibration generating device, the vibration generating device comprises an eccentric motor and an elastic support assembly; the eccentric motor is fixedly installed at the bottom of the material guiding plate; the elastic support assembly is connected between the material guiding plate and a fixed base to constitute a vibration buffering mechanism. Further comprising:

2. A first-cut bag-opening device according to claim 1, characterized in that: a metal impurity removing device arranged above the cutting working surface; 3. A first-cut bag opening device according to claim 1 or 2, characterized in that: the metal impurity removing device comprises a magnetic adsorption unit and a rotary driving mechanism; the rotary driving mechanism is used to drive the magnetic adsorption unit to move reciprocally from the working area to outside the working area.

4. A first-cut bag opening device according to claim 1 or 2, characterized in that: The metal impurity removing device is further provided with a scraping component for separating the metal impurities adsorbed on the magnetic adsorption unit. The magnetic adsorption unit is sleeved with an adjustable conveying belt; the rotary driving mechanism synchronously drives the magnetic adsorption unit and the conveying belt to move; the spacing between the conveying belt and the magnetic adsorption unit is adjustable. A support platform, a screening cylinder, a driving device and the primary cutting and bag breaking device according to any one of claims 1 to 6 are comprised, the screening cylinder is arranged on the support platform and is driven to rotate by the driving device, both ends of the screening cylinder are respectively an inlet and an outlet, and the primary cutting and bag breaking device is correspondingly arranged at the inlet side of the screening cylinder and performs roller cutting on the bag. Further comprising:

5. A first-cut bag-opening device according to claim 4, characterized in that: a rough cutting and bag breaking device, the rough cutting and bag breaking device comprises: a rough cutting unit installed on the outer wall of the screening cylinder, the cutting knife head of which extends into the inner cavity of the screening cylinder; a flow guiding inner plate arranged between adjacent cutting knife heads; a buffering mechanism for reducing the impact force of the material on the cutting knife head; and a sliding wire power supply system for providing power for the motor of the rough cutting unit.

6. A first-cut bag opening device according to claim 4, wherein: The buffering mechanism comprises a spring assembly arranged in the rough cutting and bag breaking device, and the spring assembly is connected with the cutting knife head, so that the cutting knife head has an axial elastic displacement during cutting.

7. An automatic bag opening and discharge apparatus characterized by comprising: Further comprising:

8. An automatic bag opening and discharge apparatus according to claim 7, characterized in that: a fine cutting and bag breaking device, the fine cutting and bag breaking device comprises: a fine cutting unit driven by a motor and powered through a sliding wire slot, the rake angle of the cutter thereof is set to 5° to 25°, and the surface of the cutter is provided with grooves or texture structures; and a protection assembly comprising a plurality of inner side plates arranged on the inner wall of the screening cylinder and a guard ring arranged adjacent to the cutter; wherein the flow guiding inner plate is arranged in the coarse material area and / or the fine material area of the screening cylinder in a straight plate structure or in a segmented manner. ​ 9. An automatic bag opening and discharge apparatus according to claim 8, characterized in that: ​ 10. An automatic bag opening and discharge apparatus according to claim 8 or 9, characterized in that: ​ ​

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