A bag opening system and method

Abstract

The application discloses a bag opening system and method, which comprises a ton bag conveying mechanism, a bag opening mechanism, a waste bag packing mechanism, a waste bag transfer mechanism and a ton bag transfer mechanism. The ton bag conveying mechanism conveys and lifts the ton bag filled with materials. The bag opening mechanism cuts the bag opening of the ton bag and releases the materials. The waste bag packing mechanism recycles the empty bag. The waste bag transfer mechanism transfers the empty bag from the bag opening mechanism to the waste bag packing mechanism. The ton bag transfer mechanism transfers the ton bag filled with materials from the ton bag conveying mechanism to the bag opening mechanism. The ton bag transfer mechanism adopts a four-side embracing mode to embrace the middle part of the ton bag, so that the bottom surface of the ton bag is a flat quadrilateral surface, and the bag opening mechanism can cut the ton bag from the outer edge of the bottom surface of the ton bag. The ton bag transfer mechanism of the application adopts the four-side embracing mode to embrace the middle part of the ton bag, so that the bottom surface of the ton bag is a flat quadrilateral surface. When the bag opening mechanism cuts the bottom surface of the ton bag, the bag opening mechanism can act on the outer edge of the bottom surface, so as to ensure the size of the cut and make the bag cutting more smooth.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ton bag disassembly, in particular to a bag opening system and a bag opening method. BACKGROUND

[0002] The bag opening system is an automatic system for completing a series of actions such as ton bag conveying, bag opening and unloading, and recycling. The bag opening system usually has processes such as ton bag conveying, ton bag hoisting and transfer, bag opening and unloading, empty bag hoisting and transfer, and empty bag recycling.

[0003] The ton bag hoisting and transfer usually uses a hook to hook the upper part of the ton bag. After the material is hung down, the overall shape of the ton bag is irregular, which causes the bottom surface of the ton bag to be uneven. The center of the bottom surface is sagging and relatively full, and the periphery is lifted upward and has less material. When cutting, the area of the ton bag bottom surface that can be cut is small (the edge part is lifted high or uneven and cannot be cut completely), which causes problems such as bag opening disorder and slow unloading.

[0004] In addition, the empty bag recycling of the prior art usually adopts a semi-automatic and semi-automatic form. Even if part of it adopts a fully automatic form, it only stores the empty bags in the recycling box in a disorderly manner, and does not achieve orderly packaging. This is not only not conducive to subsequent arrangement, but also occupies an area.

[0005] Therefore, it is necessary to design a bag opening system that can complete the entire set of actions and improve the smoothness of bag opening and the speed of unloading. SUMMARY

[0006] In order to solve the technical problem of uneven bottom surface of the ton bag during hoisting in the bag opening system of the prior art, which causes bag opening and cutting to be not smooth and slow unloading, the present application provides a bag opening system and a bag opening method to solve the above problems.

[0007] The present application provides a bag opening system, which comprises a ton bag conveying mechanism, a bag opening mechanism, a waste bag packaging mechanism, a waste bag transfer mechanism, and a ton bag transfer mechanism. The ton bag conveying mechanism conveys and lifts the ton bag filled with material. The bag opening mechanism cuts the bag opening of the ton bag and releases the material. The waste bag packaging mechanism recycles the empty bag. The waste bag transfer mechanism transfers the empty bag from the bag opening mechanism to the waste bag packaging mechanism. The ton bag transfer mechanism transfers the ton bag filled with material from the ton bag conveying mechanism to the bag opening mechanism. The ton bag transfer mechanism adopts a four-sided embracing mode to hold the middle part of the ton bag, so that the bottom surface of the ton bag is a flat quadrilateral surface, and the bag opening mechanism can cut the ton bag from the outer edge of the bottom surface of the ton bag.

[0008] Further, the waste bag packing mechanism comprises a vertically arranged falling bag bin and compression bin, a vertical extrusion assembly in the falling bag bin and a horizontal extrusion assembly in the compression bin, the falling bag bin is communicated with the top of the compression bin, the vertical extrusion assembly extrudes the empty bag in the falling bag bin to the compression bin; the end of the compression bin is movably connected with a baffle, the horizontal extrusion assembly extrudes the empty bag to the baffle, the compression bin is an equal cross-section cylinder extending along the movement direction of the horizontal extrusion assembly.

[0009] Further, the vertical extrusion assembly comprises a flipper hinged with the compression bin at two opposite sides of the falling bag bin, the top of the falling bag bin is provided with a bag inlet, when the vertical extrusion assembly is in the closed state, the two flippers are relatively crossed and closed, and one of the flippers is pressed from top to bottom to the inlet of the compression bin.

[0010] Further, the compression bin is further provided with a packing cavity at one end close to the baffle, the side wall of the compression bin where the packing cavity is located is provided with a gap, and the tie can pass through the gap to pack the compressed empty bag.

[0011] Further, the compression bin further comprises a power cavity and a falling bag cavity, the packing cavity and the power cavity are located at two ends of the falling bag cavity, the falling bag cavity is located directly below the falling bag bin, and the horizontal extrusion assembly is installed in the power cavity.

[0012] Further, the gap at both sides of the horizontal extrusion assembly in the movement direction is provided with a check plate, the check plate is provided with a plurality of check hooks distributed along the movement direction of the horizontal extrusion assembly, and the surface of the check hook opposite to the baffle is a slope.

[0013] Further, the ton bag transfer mechanism comprises a hanging bracket, a pair of transverse clamps at the bottom of the hanging bracket, and a longitudinal clamp connected to the transverse clamps; when the ton bag transfer mechanism is in the loosened state, the longitudinal clamp and the transverse clamps are opened along the transverse direction, when the ton bag transfer mechanism is in the clamped state, the transverse clamps clamp the two sides of the ton bag body along the transverse direction, and the longitudinal clamp clamps the two sides of the ton bag body along the longitudinal direction, the transverse clamps and the longitudinal clamp form a square clamping space, so that the ton bag forms a square structure from top to bottom.

[0014] Further, the bag opening mechanism comprises a bag opening bin and a dust removal box above the bag opening bin, the bag opening bin is provided with a cutter assembly, and the cutter assembly cuts the bottom of the ton bag along a C-shaped trajectory.

[0015] Further, the dust removal box comprises four side plates, a top plate, a filter element and a fan, the top plate is provided with a transverse passage for the waste bag transfer mechanism and the ton bag transfer mechanism, two opposite side plates form a bag inlet door and a bag outlet door; the filter element is located inside the dust removal box, and the fan is located outside the dust removal box; the fan is connected with the filter element through a filtering interface on the side plate; air enters the dust removal box through the transverse passage.

[0016] The application also provides a bag opening method, which adopts the bag opening system described above and comprises the following steps.

[0017] S1: the ton bag conveying mechanism conveys the ton bag filled with materials and lifts the ton bag below the ton bag transfer mechanism.

[0018] S2: the ton bag transfer mechanism holds the middle part of the ton bag and transfers it to the bag opening mechanism.

[0019] S3: the bag opening mechanism cuts the bottom of the ton bag.

[0020] S4: the ton bag transfer mechanism is loosened during the unloading process, and the ton bag transfer mechanism is removed, and the waste bag transfer mechanism moves to the bag opening mechanism to grab the ton bag.

[0021] S5: after the unloading is completed, the waste bag transfer mechanism transfers the empty bag to the waste bag packaging mechanism.

[0022] S6: the waste bag packaging mechanism compresses and packages the empty bag.

[0023] The application has the following beneficial effects:

[0024] (1) The bag opening system and the bag opening method described in the application adopt the four-side embracing mode to hold the middle part of the ton bag, so that the bottom surface of the ton bag is a flat quadrilateral surface, and the bag opening mechanism can act on the outer edge of the bottom surface when cutting the bottom surface, thereby ensuring the size of the cut and making the cutting more smooth.

[0025] (2) The waste bag packaging mechanism in the application first squeezes the empty bag from the vertical and horizontal directions, and finally pushes the empty bag to the baffle position in the compression bin, so that the empty bag is folded into a regular shape and can be stacked in turn, facilitating packaging and output. BRIEF DESCRIPTION OF DRAWINGS

[0026] The application will be further described below in combination with the drawings and examples.

[0027] Figure 1 is a schematic view of the bag opening system described in the application;

[0028] Figure 2 is a perspective view of a specific embodiment of the bag opening system described in the application;

[0029] Figure 3 is a perspective view of the ton bag transfer mechanism in the application;

[0030] Figure 4 is Figure 3 is an enlarged view of a in

[0031] Figure 5 is Figure 3Fig. 6 is a bottom view of the ton bag transfer mechanism shown in Fig. 1;

[0032] Figure 6 Fig. 7 is a front view of the ton bag transfer mechanism shown in Fig. 1; Figure 3

[0033] Figure 7 Fig. 8 is an A-A sectional view of the ton bag transfer mechanism shown in Fig. 1; Figure 6

[0034] Figure 8 Fig. 9 is a clamped state schematic view of the ton bag transfer mechanism shown in Fig. 1; Figure 3

[0035] Figure 9 Fig. 10 is a front view of the bag opening mechanism in the present invention;

[0036] Figure 10 Fig. 11 is a bottom view of the bag opening mechanism shown in Fig. 10; Figure 9

[0037] Figure 11 Fig. 12 is a B-B sectional view of the bag opening mechanism shown in Fig. 10; Figure 10

[0038] Figure 12 Fig. 13 is a C-C sectional view of the bag opening mechanism shown in Fig. 10; Figure 11

[0039] Figure 13 Fig. 14 is a perspective view of the waste bag transfer mechanism in the present invention;

[0040] Figure 14 Fig. 15 is a perspective view of the waste bag compression mechanism in the present invention;

[0041] Figure 15 Fig. 16 is an enlarged view of b in Fig. 14; Figure 14

[0042] Figure 16 Fig. 17 is a front view of the waste bag transfer mechanism;

[0043] Figure 17 Fig. 18 is a D-D sectional view of the waste bag transfer mechanism shown in Fig. 17; Figure 16

[0044] Fig. 19 is an enlarged view of d in Fig. 17; Figure 18 Figure 17 Fig. 20 is an E-E sectional view of the waste bag transfer mechanism in Fig. 17 when in a closed state;

[0045] Figure 19 Figure 16 Fig. 21 is an E-E sectional view of the waste bag transfer mechanism in Fig. 17 when in an open state.

[0046] Figure 20 Figure 16

[0047] ​​​​​​​​​​​In the figure, 1. ton bag conveying mechanism, 2. bag opening mechanism, 201. bag opening bin, 2011. feed port, 2012. conical plate, 202. dust removal box, 2021. side plate, 2022. top plate, 2023. filter element, 2024. fan, 2025. transverse channel, 2026. bag inlet door, 2027. bag outlet door, 2028. filter interface, 2029. telescopic drive component, 203. cutter assembly, 204 , frame, 2041, support foot, 205, tilt plate, 3, waste bag packaging mechanism, 301, bag drop bin, 3011, bag inlet, 3012, window, 302, compression bin, 3021, packaging chamber, 3022, power chamber, 3023, bag drop chamber, 303, flip claw, 3031, root, 3032, claw, 304, horizontal extrusion assembly, 3041, cylinder, 3042, push plate, 305, baffle, 306, flip cylinder, 307, gap, 308, check plate, 3081, check hook, 3082, inclined plane, 309, door lock, 3091, telescopic rod, 3092, rotating plate, 3093, right-angle plate, 3094, first mounting seat, 3095, second mounting seat, 3096, second hinge axis, 4, waste bag transfer mechanism, 401, clamping plate, 402, hook, 5, ton bag transfer mechanism, 501, lifting Frame, 502, horizontal splint, 5021, first driving member, 5022, support rod, 5023, pressure plate, 503, longitudinal clamp, 5031, second driving member, 5032, rotating rod, 5033, first hinge axis, 5034, holding rod, 504, outer frame, 505, vertical guide rail, 506, rack, 507, drive motor, 508, output gear, 6, bottom plate, 7, truss, 701, longitudinal guide rail. DETAILED DESCRIPTION

[0048] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0049] Example 1

[0050] like Figure 1 、 Figure 2 As shown, a bag opening system includes a ton bag conveying mechanism 1, a bag opening mechanism 2, a waste bag packaging mechanism 3, a waste bag transfer mechanism 4, and a ton bag transfer mechanism 5. The waste bag transfer mechanism 4, the ton bag transfer mechanism 5, and the bag opening mechanism 2 are located on the same longitudinal line, and the waste bag transfer mechanism 4 and the ton bag transfer mechanism 5 reciprocate along the longitudinal line. In the present invention, the longitudinal direction refers to the length of the bag opening system, that is, the direction of movement during ton bag transfer, and the transverse direction refers to the width of the bag opening system.

[0051] The ton bag conveying mechanism 1 conveys and lifts the ton bag filled with materials, specifically, first conveying the ton bag filled with materials horizontally to the bottom of the longitudinal line of the ton bag transfer mechanism 5, and then lifting it vertically to a height that the ton bag transfer mechanism 5 can hold; the bag opening mechanism 2 cuts the bag mouth of the ton bag and releases the materials, which is commonly known as the bag opening station; the waste bag packaging mechanism 3 recycles the empty bags; the waste bag transfer mechanism 4 transfers the empty bags from the bag opening mechanism 2 to the waste bag packaging mechanism 3. The waste bag transfer mechanism 4 and the ton bag transfer mechanism 5 have similar functions, except that the objects of action are different. The former clamps empty ton bags during transfer, and the latter clamps ton bags filled with materials during transfer; the ton bag transfer mechanism 5 transfers the ton bag filled with materials from the ton bag conveying mechanism 1 to the bag opening mechanism 2; the ton bag transfer mechanism 5 hugs the middle of the ton bag in a four-sided hugging manner, so that the bottom surface of the ton bag is a flat square surface, and the bag opening mechanism 2 can cut the ton bag from the outer edge of the bottom surface of the ton bag.

[0052] Ton bags have reinforcement ribs at the bag opening to improve sealing. There are two main ways to cut ton bags in existing bag opening stations. One is diagonal cutting, which requires cutting the reinforcement ribs. The other is C-shaped bag opening. The C-shaped bag opening refers to opening the bag with a C-shaped trajectory at the bottom of the ton bag. In this case, the cutter does not need to pass through the center of the ton bag, that is, it does not need to cut the reinforcement ribs, but the cutting trajectory is closer to the outer edge of the bottom surface of the ton bag. In this case, after the conventional ton bag clamping structure is used for lifting, the cutter often cannot cut the ton bag. The ton bag transfer mechanism 5 in the present invention has good applicability for both cutting methods. Since the bottom surface of the ton bag is flat, compared with the ton bag shape with a drooping center and an inward-facing edge in the prior art, the cutter in the bag opening mechanism 2 can more accurately cut the entire bottom surface of the ton bag (including the center and the edge), thereby ensuring smooth bag opening. The ton bag opening size and feeding speed can achieve ideal results.

[0053] As shown in the figure, the bag opening system is installed on a base plate 6 , on which a longitudinally arranged truss 7 is fixed, and the waste bag transfer mechanism 4 and the ton bag transfer mechanism 5 move on the truss 7 .

[0054] The ton bag transfer mechanism 5 can be, but is not limited to, the following structure:

[0055] like Figure 3 As shown, the ton bag transfer mechanism 5 includes a hanger 501, a pair of transverse clamps 502 located at the bottom of the hanger 501, and a longitudinal clamp 503 connected to the transverse clamp 502; when the ton bag transfer mechanism 5 is in a loose state, the longitudinal clamp 503 and the transverse clamp 502 are opened along the transverse sides; when the ton bag transfer mechanism 5 is in a clamping state, the transverse clamp 502 clamps the two sides of the ton bag body along the transverse direction (such as Figure 3 and Figure 5The longitudinal clamping 503 clamps the sides of the bag body in the longitudinal direction, and the transverse clamping plate 502 and the longitudinal clamping 503 form a square clamping space (as shown in Figure 8 The bag body is clamped by the longitudinal clamping 503 and the transverse clamping plate 502, and the bag body is clamped by the longitudinal clamping 503 and the transverse clamping plate 502.

[0056] The bag body is clamped by the longitudinal clamping 503 and the transverse clamping plate 502, and the bag body is clamped by the longitudinal clamping 503 and the transverse clamping plate 502.

[0057] The hanger 501 is hung on the truss 7. Since the longitudinal clamping 503 is installed on the transverse clamping plate 502, when clamping, the transverse clamping plate 502 is first contacted with the surface of the bag, and then the longitudinal clamping 503 is started. The two are contracted together to balance the force on the four sides of the bag, and ensure that the shape of the clamped bag is regular. When loosening, the longitudinal clamping 503 is loosened first, and then the transverse clamping plate 502 is loosened. The longitudinal clamping 503 is opened to the left and right to leave a longitudinal channel, so that the bag transfer mechanism 5 can be withdrawn in the longitudinal direction (as shown in Figure 3 The clamping force of the transverse clamping plate 502 and the longitudinal clamping 503 can also be calculated in advance according to the material quantity of the bag. When clamping, the transverse clamping plate 502 is first tightened to a specified amount, and then the longitudinal clamping 503 is tightened. The transverse clamping plate 502 and the longitudinal clamping 503 can also be connected to pressure sensors to adjust the contraction force in real time according to the change of the pressure value, so that the clamping is more accurate.

[0058] The transverse clamping plate 502:

[0059] The transverse clamping plate 502 is symmetrically provided with two, each transverse clamping plate 502 includes a first driving member 5021 and a support rod 5022 controlled by the first driving member 5021 to move transversely, the first driving member 5021 is installed on the hanger 501, and the support rod 5022 moves linearly. As shown in Figure 4 and 5 The hanger 501 is fixed with two first driving members 5021 at the bottom, the output ends of the two first driving members 5021 respectively extend outward in the transverse direction, the support rod 5022 is connected to the output end of the first driving member 5021, and the support rod 5022 is located in the part clamping the bag. When the two support rods 5022 are close, the bag can be clamped, and when the two support rods 5022 are away, the bag is released.

[0060] As preferred, the support rods 5022 are arranged in vertical direction, a plurality of support rods 5022 are connected to each first driving member 5021, and a pressing plate 5023 is longitudinally connected between the support rods 5022, the pressing plate 5023 directly contacts the ton bag, and the long strip structure of the pressing plate 5023 can make the side of the ton bag more easily shaped into a rectangle. The pressing plate 5023 can be provided with a plurality of pressing plates in the up-down direction to increase the clamping area, and in the embodiment, one pressing plate 5023 is arranged above and below. The first driving member 5021 is used to output linear reciprocating motion, which can be a linear motor, a pneumatic cylinder, a hydraulic cylinder, etc.

[0061] The longitudinal clamping 503:

[0062] The longitudinal clamping 503 includes a second driving member 5031 mounted on the support rod 5022 and a rotating rod 5032 hinged to the second driving member 5031, the rotating rod 5032 is hinged to the first hinge shaft 5033 with the support rod 5022, one end of the rotating rod 5032 is hinged to the second driving member 5031, the second driving member 5031 drives the rotating rod 5032 to rotate around the first hinge shaft 5033, so that the end of the rotating rod 5032 gradually approaches or moves away from the ton bag, as preferred, the end of the rotating rod 5032 is fixed with a clamping rod 5034, and the clamping rod 5034 is a tubular structure. Since the longitudinal clamping 503 loosens to the transverse two sides, it is preferred that one longitudinal clamping 503 is connected to each side of the transverse clamping plate 502, so that the rotating radius of each longitudinal clamping 503 can be reduced, and the size of the longitudinal clamping 503 can be reduced, and at the same time, since the force arm is shortened, the clamping force of the longitudinal clamping 503 can be improved.

[0063] As shown in Figure 4 , the pressing plate 5023 is mounted on the inner side of the support rod 5022, and the second driving member 5031 is mounted on the outer side of the support rod 5022. The output end of the second driving member 5031 extends outward in the longitudinal direction, which is used to push one end of the rotating rod 5032, so as to drive the clamping rod 5034 at the other end of the rotating rod 5032 to approach or move away from the ton bag. The second driving member 5031 is used to output linear reciprocating motion, which can be a linear motor, a pneumatic cylinder, a hydraulic cylinder, etc.

[0064] When the pressure sensor is used to accurately control the force value change, the pressure sensor can be installed on the surface of the pressing plate 5023 and the clamping rod 5034 facing the ton bag, and directly contacts the ton bag.

[0065] In order to be able to adjust the height of the ton bag clamping and releasing according to the bag opening mechanism 2 and the ton bag conveying mechanism 1, in further design, as shown in Figure 6 , the top of the hanging bracket 501 can be connected with a vertical guide rail 505, and the vertical guide rail 505 is driven by a driving motor 507 to move up and down, thereby driving the hanging bracket 501 to move up and down, as shown in Figure 7As shown, the vertical guide rail 505 is provided with a rack 506, and the output end of the driving motor 507 is provided with an output gear 508, which is engaged with the rack 506 to convert the rotary motion of the driving motor 507 into the linear motion of the vertical guide rail 505.

[0066] The longitudinal translation of the ton bag transfer mechanism 5 is achieved by providing a longitudinal guide rail 701 on the truss 7, and the outer frame 504 connected to the vertical guide rail 505 is slidably connected to the longitudinal guide rail 701. The driving mode of the translational motion of the outer frame 504 along the longitudinal guide rail 701 is the same as that of the vertical guide rail 505.

[0067] The ton bag conveying mechanism 1 adopts a conveying belt or roller conveying mode, and a lifting platform is provided, which is a prior art and will not be described here.

[0068] Bag opening mechanism 2:

[0069] The bag opening mechanism 2 can be selected from the existing bag opening station. When the material stored in the ton bag is in powder form or even contains harmful ingredients, a dust removal structure needs to be installed to prevent the material from flying outward and affecting the health of workers. The bag opening mechanism 2 used in this embodiment includes a bag opening bin 201 and a dust removal box 202 located above the bag opening bin 201. The bag opening bin 201 is provided with a cutter assembly 203 which cuts the bottom of the ton bag along a C-shaped trajectory. The bag opening bin 201 is used to cut open the ton bag and unload the material downward. The bottom of the bag opening bin 201 is connected to the next level of the bin, and the dust removal box 202 is used for real-time dust removal. The cutter assembly 203 cuts along a C-shaped trajectory to avoid the reinforcing rib at the bottom of the ton bag, reducing the cutting difficulty.

[0070] The dust removal box 202 can be a sealed box body, and an external dust removal device is connected for dust removal. This structure often has a large size and occupies a large space. This embodiment adopts an integrated dust removal structure, which penetrates the dust removal box 202 inside and outside the dust removal structure. The specific structure is as follows: Figures 9-12 As shown, the dust removal box 202 includes four side plates 2021, a top plate 2022, a filter element 2023, and a fan 2024. The top plate 2022 has a horizontal passage 2025 for the waste bag transfer mechanism 4 and the ton bag transfer mechanism 5 to pass through. Two opposite side plates 2021 form an entry door 2026 and an exit door 2027. The filter element 2023 is located inside the dust removal box 202, and the fan 2024 is located outside the dust removal box 202. The fan 2024 is connected to the filter element 2023 through a filter interface 2028 on the side plate 2021. Air enters the dust removal box 202 through the horizontal passage 2025.

[0071] The four side plates 2021 surround the top of the bag opening bin 201, and the top plate 2022 covers the top of the dust removal box 202, reducing the open area at the top. The horizontal passage 2025 on the top plate 2022 can be used as an air circulation passage to avoid the vacuum inside the dust removal box 202 affecting the material falling, and can also be used as a moving passage for the transfer mechanism. The bag inlet door 2026 and the bag outlet door 2027 are used for the ton bag to enter and exit. The filter interface 2028 starts on the side plate 2021, the filter element 2023 is installed inside the dust removal box 202, and is connected to the external fan 2024 through the filter interface 2028. The dust is guided to the designated position by the fan 2024. When unloading, the bag inlet door 2026 and the bag outlet door 2027 are closed, the side plate 2021 is sealed with the feed inlet 2011 of the bag opening bin 201, the dust removal box 202 is only connected to the outside through the filter interface 2028 and the horizontal passage 2025, and the fan 2024 is turned on. Under the action of the internal and external pressure difference, the dust will move towards the filter interface 2028, and after being filtered by the filter element 2023, it will be discharged. Air enters the dust removal box 202 from the horizontal passage 2025 (as shown in Figure 11

[0072] As a preferred, the feed inlet 2011 of the bag opening bin 201 is provided with an outwardly expanded conical plate 2012 which is in contact with the inner wall of the dust removal box 202. The conical plate 2012 is beneficial to wrapping the bottom of the ton bag and facilitating the discharge of the material to the direction of the feed door.

[0073] The filter element 2023 and the fan 2024 are preferably provided with two groups, which are symmetrically arranged on the two opposite side walls of the dust removal box 202. The bag inlet door 2026 and the bag outlet door 2027 are located on the other two opposite side walls. Before opening the bag, the ton bag transfer mechanism 5 drives the ton bag to pass through the bag inlet door 2026, and after the ton bag is unloaded, the empty bag transfer mechanism 4 drives the empty bag to pass through the bag outlet door 2027.

[0074] The opening and closing of the bag inlet door 2026 and the bag outlet door 2027 is realized by the following structure: the bag opening mechanism 2 further comprises a frame 204 with a support foot 2041, the frame 204 is provided with a telescopic drive 2029 connected with the bag inlet door 2026 and the bag outlet door 2027, and the output end of the telescopic drive 2029 controls the reciprocating movement of the bag inlet door 2026 and the bag outlet door 2027. The telescopic drive 2029 can be a linear motor or an electric cylinder, a gas cylinder, etc. As shown in Figure 12 The bag inlet door 2026 and the bag outlet door 2027 are both composed of two half plates, and each half plate is connected with a telescopic drive 2029. The frame 204 is fixed at the two ends of the left and right side plates 2021, and the bag inlet door 2026 and the bag outlet door 2027 are respectively in contact with the left and right side plates 2021 and are driven by the telescopic drive 2029 to move left and right.

[0075] ​In a further design, the filtering interface 2028 is connected with the feeding port 2011 of the bag opening bin 201 through an inclined plate 205, which is inclined from top to bottom towards the center of the bag opening bin 201, as shown in Figure 11 The inclined plate 205 is also a part of the left and right side plates 2021, and the inclined plate 205 is used to guide the powder at the feeding port 2011 to climb upwards to the filtering interface 2028.

[0076] Through the design of the integrated bag opening mechanism 2, the overall volume of the equipment is simplified, the dust collection work is completed at the same time of bag opening, and the cleaning of the processing environment is realized. Moreover, the bag opening mechanism 2 is almost fully enclosed, and there is no other transmission mechanism inside the bag opening mechanism 2 except the waste bag transfer mechanism 4, which can greatly reduce the introduction of foreign matters.

[0077] Waste bag transfer mechanism 4:

[0078] The waste bag transfer mechanism 4 can be a bag clamping structure with a hook claw 402, as shown in Figure 13 The waste bag transfer mechanism 4 includes two oppositely arranged clamping plates 401 and two oppositely arranged hook claws 402, the hook claws 402 pass through the clamping plates 401, and the clamping plates 401 and the hook claws 402 are in rotary motion. After the hook claws 402 hook the ton bag, the ton bag can be hit by the two side clamping plates 401, so that the material of the ton bag is completely emptied without residue.

[0079] Waste bag packaging mechanism 3:

[0080] As shown in Figure 14 The waste bag packaging mechanism 3 includes a bag falling bin 301 and a compression bin 302 arranged vertically, a vertical extrusion assembly located in the bag falling bin 301, and a horizontal extrusion assembly 304 located in the compression bin 302. The bag falling bin 301 is in communication with the top of the compression bin 302, and the vertical extrusion assembly extrudes the empty bag in the bag falling bin 301 towards the compression bin 302. The end of the compression bin 302 is movably connected with a baffle 305, the horizontal extrusion assembly 304 extrudes the empty bag towards the baffle 305, and the compression bin 302 is an equal cross-section cylinder extending along the movement direction of the horizontal extrusion assembly 304.

[0081] The empty bag unloaded with material enters from the top of the bag falling bin 301, and then falls to the compression bin 302 from the bottom of the bag falling bin 301. The empty bag is preliminarily compressed in the vertical direction by the vertical extrusion assembly, and then is compressed in the compression bin 302 by the horizontal extrusion assembly 304 towards the baffle 305. Finally, the empty bag is extruded into a flat shape under the restriction of the baffle 305 and the surrounding wall surface of the compression bin 302. The compressed empty bags are stacked in the compression bin 302 in sequence, and the compressed empty bags have small area, regular shape, and neat stacking. When the empty bags are filled in the compression bin 302, the baffle 305 is opened, and the compressed and stacked empty bags are pushed out by the horizontal extrusion assembly 304.

[0082] The bag falling bin 301 is funnel-shaped, the inlet of the bag falling bin 301 is large, and the empty bag can be accurately dropped into the bag falling bin 301, the vertical extrusion assembly compresses the empty bag from top to bottom, and the horizontal extrusion assembly 304 extrudes the empty bag in the horizontal direction, but it does not mean that the vertical extrusion assembly only reciprocates in the vertical direction.

[0083] For example, the vertical extrusion assembly includes flipper 303 located at two opposite sides of the bag falling bin 301 and hinged with the compression bin 302, the top of the bag falling bin 301 has a bag inlet 3011, when the vertical extrusion assembly is in the closed state, the two flippers 303 are relatively crossed and closed, and one of the flippers 303 is pressed from top to bottom to the inlet of the compression bin 302. When the vertical extrusion assembly is opened, the two flippers 303 are rotated and opened, when the vertical extrusion assembly is closed, the two flippers 303 are relatively close to each other, one of the flippers 303 has a smaller rotation angle, which plays a role in slightly folding the empty bag, and the other flipper 303 has a larger rotation angle, which is just pressed on the inlet of the compression bin 302, and the empty bag is completely pressed into the compression bin 302.

[0084] The flipper 303 can but not limited to adopt the following structure:

[0085] As shown in Figure 16 , the flipper 303 includes a root 3031 and a plurality of claw parts 3032 connected with the root 3031, the root 3031 is hinged with the compression bin 302, the claw parts 3032 of the two flippers 303 are arranged in each other, and the waste bag packaging mechanism 3 further includes a turnover cylinder 306, both ends of the turnover cylinder 306 are hinged with the flipper 303 and the compression bin 302 respectively. As shown in Figure 14 , the caliber of the bag falling bin 301 gradually decreases from top to bottom, one side of the bag falling bin 301 has a window 3012, the flipper 303 located opposite to the window 3012 can be pressed on the inlet of the compression bin 302 through the window 3012 (as shown in Figure 19 ), and the other flipper 303 only needs to tilt towards the center by a certain angle, so that the empty bag is close to the center. When the flipper 303 is opened, the two flippers 303 are attached to the side wall of the bag falling bin 301 (as shown in Figure 20 ), and the empty bag can fall between the two flippers 303.

[0086] The horizontal extrusion assembly 304 in the embodiment reciprocates in the horizontal direction, the cross-sectional shape and size of the compression bin 302 are the same along the moving direction of the horizontal extrusion assembly 304. The empty bag in the compression bin 302 can be compressed to the baffle 305 with the same cross-sectional shape, so that the shape of the compressed empty bag is regular and uniform. As preferred, as shown in Figure 17As shown, the horizontal extrusion assembly 304 includes a cylinder 3041 and a push plate 3042 having the same cross-sectional dimensions as the compression chamber 302. A small gap exists between the push plate 3042 and the compression chamber 302. During the pushing process, the end face of the empty bag is completely in contact with the push plate 3042, preventing bag jamming. In this embodiment, the compression chamber 302 has a rectangular cross-sectional shape, and the push plate 3042 is also a rectangular plate.

[0087] Example 2

[0088] On the basis of the first embodiment, the compression chamber 302 has a packing cavity 3021 at one end near the baffle 305. The side wall of the compression chamber 302 where the packing cavity 3021 is located has a gap 307. The cable tie can pass through the gap 307 to pack the compressed empty bag. The cable tie can be a plastic steel belt or iron wire, such as Figure 14 、 Figure 15 and Figure 17 As shown, the packing chamber 3021 is located at one end of the compression chamber 302, and the door panel and the side wall of the compression chamber 302 where the packing chamber 3021 is located have a gap 307. When the empty bags fill the packing chamber 3021, the cable tie can pass through the packing chamber 3021 from the gap 307, tie the empty bags in the packing chamber 3021 together, and then open the baffle 305 to push the whole bag out to achieve the effect of overall packaging.

[0089] like Figure 17 As shown, the compression chamber 302 also includes a power chamber 3022 and a bag dropping chamber 3023. The packaging chamber 3021 and the power chamber 3022 are located at both ends of the bag dropping chamber 3023. The bag dropping chamber 3023 is located directly below the bag dropping chamber 301. The horizontal extrusion assembly 304 is installed in the power chamber 3022.

[0090] In a further design, a check plate 308 is installed at the gap 307 on both sides of the movement direction of the horizontal extrusion component 304 in the packaging chamber 3021. The check plate 308 is provided with a plurality of check hooks 3081 distributed along the movement direction of the horizontal extrusion component 304. The surface of the check hook 3081 facing away from the baffle 305 is a slope 3082. Figure 17 and Figure 18 As shown, the non-return hook 3081 is facing the end face of the baffle 305, which can press the empty bags stacked on the baffle 305 to prevent the empty bags from expanding again after being squeezed. The inclined surface 3082 on the non-return hook 3081 is opposite to the compression movement direction of the empty bags, which helps the empty bags slide over the inclined surface 3082 to reach the baffle 305.

[0091] Example 3

[0092] On the basis of the above embodiment, the baffle 305 is hinged to the compression chamber 302, and the end of the compression chamber 302 is further provided with a door lock 309 for pressing the baffle 305. The door lock 309 can be, but is not limited to, the following structure:

[0093] The door lock 309 comprises a telescopic rod 3091, a rotating plate 3092, a right-angle plate 3093, a first mounting seat 3094 and a second mounting seat 3095. The first mounting seat 3094 is fixed to the side of the compression bin 302, the second mounting seat 3095 is fixed to the end of the compression bin 302, the rotating plate 3092 is hinged to the second hinge shaft 3096, one end of the telescopic rod 3091 is hinged to the first mounting seat 3094, the other end is hinged to one end of the rotating plate 3092, the other end of the rotating plate 3092 is fixedly connected to the right-angle plate 3093, and the right-angle plate 3093 is in plane contact with the baffle 305 to press the baffle 305 tightly. As shown in the figure, the telescopic rod 3091 is rotated and telescoped by a hand wheel. When the telescopic rod 3091 is elongated, the rotating plate 3092 rotates around the second hinge shaft 3096, and the right-angle plate 3093 approaches and fits the baffle 305. When the telescopic rod 3091 is retracted, the rotating plate 3092 rotates reversely around the second hinge shaft 3096, the right-angle plate 3093 moves away from the baffle 305 and moves to one side, and after the baffle 305 is opened, the end of the compression bin 302 is opened, facilitating the removal of the packed waste bag. Figure 17

[0094] In other optional embodiments, the door lock 309 can also be a simple pin shaft connection or a quick clamp.

[0095] Example Four

[0096] A bag opening method, which adopts the bag opening system described above, comprises the following steps:

[0097] S1: The ton bag conveying mechanism 1 conveys the ton bag filled with materials, and lifts the ton bag below the ton bag transfer mechanism 5.

[0098] S2: The ton bag transfer mechanism 5 holds the middle part of the ton bag, so that the bottom of the ton bag presents a quadrilateral structure, and then transfers it to the bag opening mechanism 2.

[0099] S3: The bag opening mechanism 2 cuts the bottom of the ton bag.

[0100] S4: During the unloading process, the ton bag transfer mechanism 5 is loosened, and the ton bag transfer mechanism 5 is removed, and the waste bag transfer mechanism 4 moves to the bag opening mechanism 2 to grab the ton bag.

[0101] S5: After the unloading is completed, the waste bag transfer mechanism 4 transfers the empty bag to the waste bag packing mechanism 3.

[0102] S6: The waste bag packing mechanism 3 compresses and packs the empty bag.

[0103] ​In the description of the application, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "axial" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0104] In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0105] In this specification, the illustrative expressions of the terms do not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments in a suitable manner.

[0106] Based on the above ideal embodiments according to the application, through the above description, relevant personnel can make various changes and modifications without deviating from the scope of the technical idea of the application. The technical scope of the application is not limited to the content of the specification, and must be determined by the scope of the claims.

Claims

1. A bag opening system, characterized in that: include: Big bag conveying mechanism, conveying and lifting big bags filled with materials; Bag opening mechanism, cuts the mouth of the ton bag and releases the material; Waste bag packaging mechanism to recycle empty bags; Waste bag transfer mechanism, which transfers the empty bags from the bag opening mechanism to the waste bag packaging mechanism; The ton bag transfer mechanism transfers the ton bag filled with materials from the ton bag conveying mechanism to the bag opening mechanism; the ton bag transfer mechanism embraces the middle part of the ton bag in a four-sided embracing manner, so that the bottom surface of the ton bag is a flat square surface, and the bag opening mechanism can cut the ton bag from the outer edge of the bottom surface of the ton bag.

2. The bag opening system according to claim 1, characterized in that: The waste bag packaging mechanism includes a vertically arranged bag dropping bin and a compression bin, a vertical extrusion assembly located in the bag dropping bin, and a horizontal extrusion assembly located in the compression bin. The bag dropping bin is connected to the top of the compression bin, and the vertical extrusion assembly squeezes the empty bags in the bag dropping bin toward the compression bin. The end of the compression bin is movably connected with a baffle, and the horizontal extrusion assembly squeezes the empty bag toward the baffle. The compression bin is a column with a uniform cross-section extending along the movement direction of the horizontal extrusion assembly.

3. The bag opening system according to claim 2, characterized in that: The vertical extrusion assembly includes flaps located on two opposite sides of the bag dropping bin and hinged to the compression bin. The top of the bag dropping bin has a bag inlet. When the vertical extrusion assembly is in a closed state, the two flaps are relatively cross-closed, and one of the flaps presses from top to bottom toward the inlet of the compression bin.

4. The bag opening system according to claim 2, characterized in that: The compression bin further comprises a packing cavity at one end close to the baffle, and a side wall of the compression bin where the packing cavity is located comprises a gap, through which a cable tie can pass to pack the compressed empty bags.

5. The bag opening system according to claim 4, characterized in that: The compression chamber also includes a power chamber and a bag dropping chamber. The packaging chamber and the power chamber are located at both ends of the bag dropping chamber. The bag dropping chamber is located directly below the bag dropping chamber. The horizontal extrusion assembly is installed in the power chamber.

6. The bag opening system according to claim 4, characterized in that: A check plate is installed at the gap on both sides of the movement direction of the horizontal extrusion component in the packaging chamber. The check plate is provided with a plurality of check hooks distributed along the movement direction of the horizontal extrusion component, and the surface of the check hook facing away from the baffle is an inclined surface.

7. The bag opening system according to claim 1, characterized in that: The ton bag transfer mechanism includes a hanger, a pair of transverse clamps located at the bottom of the hanger, and a longitudinal clamp connected to the transverse clamps; when the ton bag transfer mechanism is in a loose state, the longitudinal clamps and the transverse clamps are opened along the transverse sides; when the ton bag transfer mechanism is in a clamped state, the transverse clamps clamp the two sides of the ton bag body along the transverse direction, and the longitudinal clamps clamp the two sides of the ton bag body along the longitudinal direction. The transverse clamps and the longitudinal clamps form a square clamping space to form a square structure for the ton bag from top to bottom.

8. The bag opening system according to claim 7, characterized in that: The bag opening mechanism includes a bag opening bin and a dust removal box located above the bag opening bin. A cutter assembly is provided in the bag opening bin, and the cutter assembly cuts the bottom of the ton bag along a C-shaped track.

9. The bag opening system according to claim 8, characterized in that: The dust removal box includes four side panels, a top panel, a filter element and a fan. The top panel has a transverse channel for the waste bag transfer mechanism and the ton bag transfer mechanism to pass through, wherein two oppositely arranged side panels form a bag inlet door and a bag outlet door; the filter element is located inside the dust removal box, and the fan is located outside the dust removal box. The fan is connected to the filter element through the filter interface on the side panel; the air enters the dust removal box through the transverse channel.

10. A bag opening method, characterized in that: The method adopts the bag opening system according to any one of claims 1 to 9, comprising the following steps: S1: The ton bag conveying mechanism conveys the ton bag filled with materials and lifts the ton bag under the ton bag transfer mechanism; S2: The ton bag transfer mechanism holds the middle of the ton bag and transfers it to the bag opening mechanism; S3: The bag opening mechanism cuts the bottom of the ton bag; S4: During the unloading process, the ton bag transfer mechanism is released and moved out, and the waste bag transfer mechanism moves into the bag opening mechanism to grab the ton bag; S5: After unloading is completed, the waste bag transfer mechanism transfers the empty bags to the waste bag packaging mechanism; S6: The waste bag packaging mechanism compresses and packages the empty bags.

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