Bag Unloading Equipment and Bag Unloading Method

Abstract

The present invention provides a bag-unloading device and a bag-unloading method, which include a bracket structure, an isolation structure, a collection bin structure, a cutting structure, and a feeding and discharging structure; the collection bin structure includes a packaging bag collection bin and a material collection bin, and the upper spaces of the packaging bag collection bin and the material collection bin are separated by the isolation structure; the feeding and discharging structure includes a swinging assembly, a bag clamping and unloading assembly, and a sliding plate assembly; an external bagged material package bearing position is arranged on the sliding plate assembly; the swinging assembly can drive the sliding plate assembly to swing, and the bag clamping and unloading assembly is installed on the sliding plate assembly; a part of the structure of the sliding plate assembly can move between the upper part of the packaging bag collection bin and the upper part of the material collection bin. The present invention can make the most of materials, not only greatly reducing the labor intensity of the existing manual bag-unloading, reducing labor costs, preventing operators from suffering from occupational disease hazards, but also separating the materials and the packaging bags more efficiently and thoroughly.

Description

Technical Field

[0001] The present invention relates to the technical field of disassembly and assembly of bagged powder or granular materials. Specifically, it relates to a bag-opening device and a bag-opening method. In particular, it relates to an automatic bag-opening machine and a bag-opening method for bagged powder or granular agents in the treatment process of mine wastewater / industrial wastewater / landfill leachate, etc. Background Art

[0002] In the process of wastewater treatment, various powdered or granular solid agents are often added, such as glucose, sodium carbonate, etc. Due to production and transportation limitations, the above agents are often packaged in individual bags (about 25 kg / bag). Manual bag-opening is required before adding the agents. When the dosage of the agents is large, manual bag-opening has the following disadvantages: Firstly, the working environment is harsh, which poses a great occupational health hazard to the operator. Secondly, a large number of bag-opening personnel are required, with high labor intensity, low work efficiency, and high labor costs. With the development of technology.

[0003] In recent years, various automatic bag-opening machines have emerged. Their principles are mostly: after using a cutter to cut open the packaging bag, a rolling (vibrating) screen is used to separate the packaging bag and the material. If the number of cuts on the packaging bag is large, the packaging bag fragments are likely to block the sieve holes and even contaminate the material under the sieve. If the number of cuts on the packaging bag is small, it is difficult to completely screen out the material in the packaging bag.

[0004] Patent document CN216509645U discloses a fertilizer automatic bag-opening and discharging machine, which relates to the technical field of bag-opening and discharging devices, and includes: a frame, a cutting assembly, a screening assembly, and a discharging conveying assembly. The cutting assembly is arranged on the top of the frame, the discharging conveying assembly is arranged at the bottom of the frame, and the screening assembly is arranged on the frame between the cutting assembly and the discharging conveying assembly. The screening assembly includes: a vibration box, a vibrating screen mesh, guide rails, a main shaft, and a flyweight. The vibration box is elastically connected to the frame, there are multiple layers of vibrating screen meshes arranged in the vibration box, multiple guide rails are arranged on the vibrating screen mesh, the main shaft is rotatably connected to the side wall of the vibration box, flyweights are sleeved at both ends of the main shaft part, and the main shaft is connected to a first motor. However, this solution still adopts the vibrating screen mesh solution and still has the above-mentioned technical problems. Summary of the Invention

[0005] Aiming at the defects in the prior art, the purpose of the present invention is to provide a bag-opening device and a bag-opening method.

[0006] According to a bag-opening device provided by the present invention, it includes a support structure, a collection bin structure, a cutting structure, and a feeding and discharging structure;

[0007] The collection bin structure and the cutting structure are both installed on the support structure;

[0008] The collection bin structure includes a packaging bag collection bin and a material collection bin arranged in parallel;

[0009] The loading and unloading structure includes a swinging assembly, a bag clamping and discharging assembly, and a sliding plate assembly;

[0010] A loading position for external bagged material packages is provided on the sliding plate assembly; the swinging assembly can drive the sliding plate assembly to swing, and the bag clamping and discharging assembly is installed on the sliding plate assembly; a part of the structure of the sliding plate assembly can move between above the packaging bag collection bin and above the material collection bin;

[0011] The swinging assembly includes a left swinging member and a right swinging member;

[0012] The left swinging member and the right swinging member have the same structure and are symmetrically arranged;

[0013] The right swinging member includes a right cylinder, a right first connecting rod, and a right second connecting rod;

[0014] The right cylinder includes a right swinging cylinder block and a right swinging cylinder piston; the right swinging cylinder block is fixedly installed on the support structure, the right swinging cylinder piston is rotatably connected to one end of the right first connecting rod, the other end of the right first connecting rod is rotatably connected to one end of the right second connecting rod, and the other end of the right second connecting rod is fixedly connected to the right main shaft of the sliding plate assembly.

[0015] Preferably, the sliding plate assembly includes a left sliding plate member and a right sliding plate member, the left sliding plate member and the right sliding plate member have the same structure and are symmetrically arranged;

[0016] The right sliding plate member includes a right front bearing, a right front bearing seat, a right rear bearing, a right rear bearing seat, a right main shaft, a right sliding shaft, a roller group, a right baffle, a right screw, a right support block, and a right main shaft sliding cylinder;

[0017] The right main shaft is supported on the support structure through the right front bearing, the right front bearing seat, the right rear bearing, and the right rear bearing seat, and the right main shaft straddles the collection bin structure;

[0018] The right sliding shaft is slidably connected to the right main shaft; the right sliding shaft can move along the length direction of the right main shaft under the action of the right main shaft sliding cylinder;

[0019] A roller group is arranged between the right main shaft and the right support block, screws are arranged at both ends of the roller group, and the right support block and the right sliding shaft are fixedly connected through the right screw; a right baffle is also arranged at the end of the roller group;

[0020] The roller group includes a plurality of rollers arranged in parallel;

[0021] The external bagged material package bearing position is arranged on the top surface of the roller group.

[0022] Preferably, the bag clamping and discharging assembly includes a left bag clamping and discharging component and a right bag clamping and discharging component;

[0023] The right bag clamping and discharging component includes a right swing cylinder, a right fixed claw, and a right bag discharging baffle; the right bag discharging baffle and the right swing cylinder are fixed on the right sliding shaft, the right fixed claw is hinged to the right swing cylinder, and the right fixed claw can be driven by the right swing cylinder to rotate and swing;

[0024] The left bag clamping and discharging component and the right bag clamping and discharging component have the same structure and are arranged symmetrically in mirror image; the left bag clamping and discharging component is installed on the left sliding shaft.

[0025] Preferably, the cutting structure includes a cutting wheel drive motor, a cutting wheel, a cutting wheel swing cylinder, and a cutting wheel rod;

[0026] One end of the cutting wheel rod is rotatably connected to the support structure, and one end of the cutting wheel rod is located above the packaging bag collection bin; the other end of the cutting wheel rod extends above the material collection bin, and a cutting wheel drive motor and a cutting wheel are installed at the other end of the cutting wheel rod;

[0027] The cutting wheel swing cylinder is located above the material collection bin. One end of the cutting wheel swing cylinder is rotatably connected to the support structure, and the other end is rotatably connected to the middle of the cutting wheel rod.

[0028] Preferably, the right swing component further includes a right first hinge pin, a right second hinge pin, and a right third pin; the swing cylinder piston 202 is hinged to the right first link through the right first hinge pin 203, the right first link is hinged to the right second link through the right second hinge pin 205, and the right second link is fixedly connected to the right main shaft through the right third pin.

[0029] Preferably, the right slide plate component further includes a propulsion cylinder pin and a hinge seat;

[0030] The piston of the right main shaft sliding cylinder is hinged to the right sliding shaft through the mutual matching of the propulsion cylinder pin 215 and the hinge seat 216.

[0031] Preferably, it further includes a support peripheral cover plate, and the support peripheral cover plate is installed on the outside of the support structure.

[0032] According to a bag-opening method provided by the present invention, using the bag-opening device as described above, it further includes the following steps:

[0033] Step 1: Place the external bagged material on the roller, and define the position of this roller as the initial position;

[0034] Step 2: Drive the right fixed claw to rotate counterclockwise. The left fixed claw of the right fixed claw and the left bag clamping and unloading component pierce the packaging bag and clamp the packaging bag.

[0035] Step 3: The right main shaft sliding cylinder drives the right sliding shaft, and the left main shaft sliding cylinder drives the left sliding shaft to drive the bagged material package placed on the drum. The bagged material package stops sliding when it slides to directly above the material collection bin.

[0036] Step 4: The cutting wheel swing cylinder drives the cutting wheel to rotate at high speed. At the same time, the cutting wheel swing cylinder drives the cutting wheel swing arm to swing to complete the cutting of the bagged material package.

[0037] Step 5: After cutting and completion of cutting, most of the material in the bag freely leaks into the material collection bin 7, and a small part of the material still remains in the bag.

[0038] Step 6: The piston of the main right swing cylinder drives the right main shaft to reciprocate clockwise and counterclockwise through the right first connecting rod and the right second connecting rod. The piston of the main left swing cylinder drives the left main shaft to reciprocate clockwise and counterclockwise through the left first connecting rod and the left second connecting rod, so as to completely unload the small part of the material remaining in the packaging bag.

[0039] Step 7: After the material is completely unloaded, the pistons of the right swing cylinder and the left swing cylinder both retract completely, and both drums return to the initial horizontal position.

[0040] Step 8: The right main shaft sliding cylinder drives the right sliding shaft, and the left main shaft sliding cylinder drives the left sliding shaft to drive the packaging bag placed on the drum to move. The packaging bag stops moving when it moves to directly above the packaging bag collection bin.

[0041] Step 9: The piston of the main right swing cylinder drives the right main shaft to rotate counterclockwise by 90° through the right first connecting rod and the right second connecting rod. The piston of the main left swing cylinder drives the left main shaft to rotate counterclockwise by 90° through the left first connecting rod and the left second connecting rod. At the same time, the right swing cylinder drives the right fixed claw to rotate clockwise, and the left swing cylinder drives the left fixed claw to rotate clockwise, thereby canceling the clamping effect on the material package and realizing the separation of the fixed claw and the packaging bag. The separated packaging bag freely falls into the packaging bag collection bin under the action of its own weight.

[0042] Step 10: The piston of the right swing cylinder drives the right main shaft to rotate clockwise through the right first connecting rod and the right second connecting rod again, and the piston of the left swing cylinder drives the left main shaft to rotate clockwise through the left first connecting rod and the left second connecting rod again, so that the two drums return to the initial horizontal position; finally, the main shaft cylinders on both sides continue to drive the sliding shafts on both sides to slide back until the drums reach the initial position, waiting for the next feeding of the bagged material package.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] 1. Through the design of the collection bin structure, cutting structure and feeding / discharging structure, the present invention can avoid manual bag opening, greatly reduce the labor intensity of the existing manual bag opening, reduce labor costs, and prevent operators from suffering from occupational disease hazards.

[0045] 2. And the present invention does not adopt the design of a rolling (vibrating) screen, which can avoid the phenomenon of clogging the sieve holes in the prior art.

[0046] 3. By means of the technical means of connecting the swing assembly in the feeding / discharging structure with the main shaft, the present invention realizes the swing of the slide plate assembly, and further can achieve the technical effect of ensuring that the material is completely discharged through multiple swings of the slide plate assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] By reading the following detailed description of the non-restrictive embodiments with reference to the accompanying drawings, other features, objects and advantages of the present invention will become more apparent:

[0048] Figure 1 is a schematic structural diagram of the present invention;

[0049] Figure 2 is a schematic partial structural diagram of the present invention;

[0050] Figure 3 is Figure 2 an enlarged schematic structural diagram of part A in

[0051] Figure 4 is a schematic structural diagram when the sliding shaft is directly above the material collection bin 7;

[0052] Figure 5 is a schematic structural diagram of the present invention when the cutting wheel is working;

[0053] Figure 6 is a schematic structural diagram of the present invention when discharging materials;

[0054] Figure 7 is a schematic structural diagram of the present invention when discharging the packaging bag.

[0055] The figures show:

[0056] Detailed implementation manners

[0057] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0058] The present invention provides a bag-unloading device, as Figures 1-3 shown, which includes a bracket structure 5, an isolation structure, a collection bin structure, a cutting structure, and a feeding and discharging structure;

[0059] The isolation structure, the collection bin structure, and the cutting structure are all installed on the bracket structure 5; in a preferred example, the bag-unloading device further includes a bracket peripheral cover plate, which is installed on the outside of the bracket structure 5 and serves to protect the entire bag-unloading device.

[0060] The collection bin structure includes a packaging bag collection bin 6 and a material collection bin 7. The upper spaces of the packaging bag collection bin 6 and the material collection bin 7 are separated by the isolation structure; the packaging bag collection bin 6 and the material collection bin 7 are both fixedly connected to the lower half of the bracket structure 5. The packaging bag collection bin 6 and the material collection bin 7 are respectively used to collect packaging bags and the materials leaking out after the packaging bags are cut.

[0061] The feeding and discharging structure includes a swing assembly, a bag clamping and unloading assembly, and a slide plate assembly;

[0062] An external bagged material package bearing position is provided on the slide plate assembly. The swing assembly can drive the slide plate assembly to swing. The bag clamping and unloading assembly is installed on the slide plate assembly; a part of the structure of the slide plate assembly can move between the upper part of the packaging bag collection bin 6 and the upper part of the material collection bin 7.

[0063] As Figure 1 And Figure 2As shown, the swinging assembly includes a left swinging member and a right swinging member; the left swinging member and the right swinging member have the same structure and are symmetrically arranged; the right swinging member includes a right cylinder, a right first connecting rod 204, and a right second connecting rod 206; the right cylinder includes a right swinging cylinder block 201 and a right swinging cylinder piston 202; the right swinging cylinder block 201 is fixedly installed on the bracket structure 5, the right swinging cylinder piston 202 is rotatably connected to one end of the right first connecting rod 204, the other end of the right first connecting rod 204 is rotatably connected to one end of the right second connecting rod 206, and the other end of the right second connecting rod 206 is fixedly connected to the right main shaft 211 of the slide plate assembly. The right swinging member further includes a right first hinge pin 203, a right second hinge pin 205, and a right third pin 207; specifically, the swinging cylinder piston 202 is hinged to the right first connecting rod 204 through the right first hinge pin 203, the right first connecting rod 204 is hinged to the right second connecting rod 206 through the right second hinge pin 205, and the right second connecting rod 206 is fixedly connected to the right main shaft 211 through the right third pin 207.

[0064] The left swinging member includes a left cylinder, a left first connecting rod 104, a left second connecting rod 106, a left first hinge pin 103, a left second hinge pin 105, and a left third pin 107; the left cylinder includes a left swinging cylinder block 101 and a left swinging cylinder piston 102; the structures of the left first connecting rod 104, the left second connecting rod 106, the left swinging cylinder block 101, the left swinging cylinder piston 102, the left first hinge pin 103, the left second hinge pin 105, and the left third pin 107 are respectively the same as the structures of the right first connecting rod 204, the right second connecting rod 206, the right swinging cylinder block 201, the right swinging cylinder piston 202, the right first hinge pin 203, the right second hinge pin 205, and the right third pin 207.

[0065] As Figure 3As shown, the skateboard assembly includes a left skateboard component and a right skateboard component. The structures of the left skateboard component and the right skateboard component are the same and are arranged symmetrically by mirror image. The right skateboard component includes a right front bearing 209, a right front bearing seat 208, a right rear bearing, a right rear bearing seat, a right main shaft 211, a right sliding shaft 212, a roller group, a right baffle 218, a right screw 219, a right support block 221, and a right main shaft sliding cylinder 210; the right main shaft 211 is supported on the bracket structure 5 through the right bearing 209, the right bearing seat 208, the right rear bearing, and the right rear bearing seat, and the right main shaft 211 straddles the collection bin structure; the right sliding shaft 212 is slidably connected to the right main shaft 211; the right sliding shaft 212 can move along the length direction of the right main shaft 211 under the action of the right main shaft sliding cylinder 210, that is, move between above the packaging bag collection bin 6 and above the material collection bin 7. A roller group is arranged between the right main shaft 211 and the right support block 221. Screws 219 are arranged at both ends of the roller group. The right support block 221 and the right sliding shaft 212 are fixedly connected through the right screw 219; a right baffle 218 is also arranged at the end of the roller group; the roller group includes a plurality of rollers 213 arranged in parallel with each other, and the external bagged material package bearing position is arranged on the top surface of the roller group.

[0066] Specifically, the right baffle 218 is fixed to the rear ends of the right sliding shaft 212 and the right support block 221 for blocking and positioning the input bagged material package. The rollers 213 are supported on the right support block 221 and the right sliding shaft 212 through bearings and axially fixed through the right screw 219, so as to realize the free rotation of the rollers 213 for the smooth pushing in of the bagged material package. The cylinder body of the right main shaft sliding cylinder 210 is fixed on the right main shaft 211, and the piston of the right main shaft sliding cylinder 210 is hinged to the right sliding shaft 212 through a propulsion cylinder pin 215 and a hinge seat 216. The right main shaft sliding cylinder 210 can move along with the right main shaft 211 and rotate along the axis of the right main shaft 211. At the same time, the right main shaft sliding cylinder 210 can drive the right sliding shaft 212 and other components installed on the right sliding shaft 212 to slide back and forth axially along the right main shaft 211.

[0067] The left slide plate component includes a left front bearing 109, a left front bearing seat 108, a left rear bearing 124, a left rear bearing seat 123, a left main shaft, a left slide shaft, a roller group, a left baffle, a left screw, a left support block, and a left main shaft sliding cylinder 110; the structures of the left front bearing 109, the left front bearing seat 108, the left rear bearing 124, the left rear bearing seat 123, the left main shaft, the left slide shaft, the roller group, the left baffle, the left screw, the left support block, and the left main shaft sliding cylinder 110 of the left slide plate component are respectively the same as those of the right front bearing 209, the right front bearing seat 208, the right rear bearing, the right rear bearing seat, the right main shaft 211, the right slide shaft 212, the roller group, the right baffle 218, the right screw 219, the right support block 221, and the right main shaft sliding cylinder 210.

[0068] The bag clamping and bag discharging assembly includes a left bag clamping and bag discharging component and a right bag clamping and bag discharging component; the right bag clamping and bag discharging component includes a right swing cylinder 214, a right fixed claw 217, and a right bag discharging baffle 220; the right bag discharging baffle 220 and the right swing cylinder 214 are fixed on the right slide shaft 212, the right fixed claw 217 is hinged to the right swing cylinder 214, and the right fixed claw 217 can be driven by the right swing cylinder to rotate and swing, so as to puncture and clamp the material packaging bag. The structures of the left bag clamping and bag discharging component and the right bag clamping and bag discharging component are the same and are arranged in mirror symmetry; the left bag clamping and bag discharging component is installed on the left slide shaft.

[0069] The cutting structure includes a cutting wheel drive motor 301, a cutting wheel 302, a cutting wheel swing cylinder 303, and a cutting wheel rod 304; one end of the cutting wheel rod 304 is rotatably connected to the bracket structure 5, and one end of the cutting wheel rod 304 is located above the packaging bag collection bin 6; the other end of the cutting wheel rod 304 passes through the isolation structure and extends above the material collection bin 7, and a cutting wheel drive motor 301 and a cutting wheel 302 are installed at the other end of the cutting wheel rod 304, and the cutting wheel drive motor 301 can drive the cutting wheel 302 to rotate; the cutting wheel swing cylinder 303 is located above the material collection bin 7, one end of the cutting wheel swing cylinder 303 is rotatably connected to the bracket structure 5, and the other end is rotatably connected to the middle of the cutting wheel rod 304. Preferably, the cutting wheel 302 and the cutting wheel drive motor 301 are rotatably connected, both are installed at the front end of the cutting wheel rod 304, the rear end of the cutting wheel rod 304 is hinged to the bracket structure 5, the middle of the cutting wheel rod 304 is hinged to the cutting wheel swing cylinder 303, and the cutting wheel rod 304 can be driven by the cutting wheel swing cylinder 303 to swing up and down, thereby driving the cutting wheel to swing. The rear end of the cutting wheel swing cylinder 303 is hinged to the bracket structure 5.

[0070] The isolation structure includes a rubber soft isolation curtain 4; the rubber soft isolation curtain 4 includes a plurality of isolation belts, and the plurality of isolation belts are arranged in parallel; one end of the isolation belt is fixedly connected to the support structure 5, and the other end is a movable end; a gap is provided between adjacent isolation belts to facilitate the passage of the right main shaft 211, the left main shaft, and the cutting wheel rod 304. Preferably, the upper end of the rubber soft isolation curtain 4 is fixedly connected to the support structure 5 to separate the material bin from the packaging bag collection bin and prevent the material from overflowing to the packaging bag collection bin.

[0071] The present invention also provides a bag-unloading method. Using the bag-unloading device described above, the method further includes the following steps:

[0072] Step 1: Place the external bagged material on the roller 213, and define the position where this roller 213 is located as the initial position;

[0073] Step 2: Drive the right fixed claw 217 to rotate counterclockwise. The right fixed claw 217 and the left fixed claw of the left bag clamping and bag-unloading component pierce the packaging bag and clamp the packaging bag;

[0074] Step 3: The right main shaft sliding cylinder 210 drives the right sliding shaft 212, and the left main shaft sliding cylinder drives the left sliding shaft to drive the bagged material package placed on the roller 213; the bagged material package stops sliding when it slides to directly above the material collection bin 7;

[0075] Step 4: The cutting wheel swing cylinder 303 drives the cutting wheel 302 to rotate at high speed, and at the same time, the cutting wheel swing cylinder 303 drives the cutting wheel swing arm 304 to swing to complete the cutting of the bagged material package;

[0076] Step 5: After the cutting and completion of cutting, most of the material in the bag freely leaks into the material collection bin 7, and a small part of the material still remains in the bag.

[0077] Step 6: The main right swing cylinder piston 202 drives the right main shaft 211 to rotate reciprocally in the clockwise and counterclockwise directions through the right first connecting rod 204 and the right second connecting rod 206, and the main left swing cylinder piston drives the left main shaft to rotate reciprocally in the clockwise and counterclockwise directions through the left first connecting rod and the left second connecting rod; thereby completely discharging the small part of the material remaining in the packaging bag.

[0078] Step 7: After the material is completely discharged, the right swing cylinder piston 202 and the left swing cylinder piston both retract completely, and the two rollers 213 both return to the initial horizontal position.

[0079] Step 8: The right main shaft sliding cylinder 210 drives the right sliding shaft 212, and the left main shaft sliding cylinder drives the left sliding shaft to drive the packaging bag placed on the roller 213 to move. The packaging bag stops moving when it moves directly above the packaging bag collection bin 6;

[0080] Step 9: The piston 202 of the main right swing cylinder drives the right main shaft 211 to rotate counterclockwise by 90° through the right first connecting rod 204 and the right second connecting rod 206. The piston of the main left swing cylinder drives the left main shaft to rotate counterclockwise by 90° through the left first connecting rod and the left second connecting rod. At the same time, the right swing cylinder 214 drives the right fixed claw 217 to rotate clockwise, and the left swing cylinder drives the left fixed claw to rotate clockwise, thereby canceling the clamping effect on the material package to be packed and realizing the separation of the fixed claw and the packaging bag. After separation, the packaging bag freely falls into the packaging bag collection bin 6 under its own weight;

[0081] Step 10: The piston 202 of the right swing cylinder drives the right main shaft 211 to rotate clockwise again through the right first connecting rod 204 and the right second connecting rod 206. The piston of the left swing cylinder drives the left main shaft to rotate clockwise again through the left first connecting rod and the left second connecting rod, so that the two side rollers 213 return to the initial horizontal position; Finally, the two main shaft sliding cylinders continue to drive the two side sliding shafts to slide back until the roller 213 reaches the initial position, waiting for the next feeding of the bagged material package.

[0082] The working principle of the present invention is as follows:

[0083] Since the present invention is left-right mirror symmetric, the working principle is described below taking the right side as an example (reference Figures 4-7 , Figures 4-7 Neither shows the bagged material package).

[0084] The bagged material package (usually 25 kg / bag) is horizontally fed onto the roller 213 by an external manipulator or manually, that is, the bagged material package is placed across the two side rollers 213. When the front end of the bagged material package slides into contact with the right baffle 218, the right swing cylinder 214 drives the right fixed claw 217 to rotate counterclockwise. The right fixed claw 217 pierces the packaging bag and clamps the packaging bag. Subsequently, the right main shaft sliding cylinder 210 drives the right sliding shaft 212 to drive structures such as the roller 213 and the bagged material package to slide forward along the right main shaft 211, and stops sliding when the material package is directly above the material collection bin 7 (reference Figure 4 ). Subsequently, as Figure 5 shown, the cutting wheel swing cylinder 303 drives the cutting wheel 302 to rotate at high speed, and at the same time the cutting wheel swing cylinder 303 drives the cutting wheel swing arm 304 to swing, thereby driving the cutting wheel 302 to move downward to complete the cutting of the bagged material package (dividing the bagged material package into left and right parts). After cutting and completion of cutting, most of the material in the bag freely leaks into the material collection bin 7, and a small part of the material remains in the bag. Subsequently, as Figure 6As shown, the main right swing cylinder piston 202 (piston extended) drives the main shaft 211 to rotate counterclockwise (rotation angle > 90°) through the right first connecting rod 204 and the right second connecting rod 206. When the right swing cylinder piston 202 retracts, the right main shaft 211 rotates clockwise. The right swing cylinder piston 202 repeats the extension and retraction, thereby completing the reciprocating swing of the right main shaft 211, and further enabling the complete discharge of a small portion of the material remaining in the packaging bag (the number of swings can be increased to ensure complete discharge of the material). After the material is completely discharged, the right swing cylinder piston 202 fully retracts, and the roller 213 returns to its initial horizontal position. During the cutting and swing discharging process, the material bin and the packaging bag bin are separated by a rubber soft partition curtain 4, effectively preventing the spillage of material dust.

[0085] After the material in the bag is completely discharged and the roller 213 returns to its initial horizontal position, the right main shaft sliding cylinder 210 continues to drive structures such as the right sliding shaft 212 and the roller 213, as well as the empty material bag, to slide forward along the right main shaft 211. When it slides to directly above the packaging bag collection bin 6, it stops sliding, as Figure 7 shown. The right swing cylinder piston 202 again drives the right main shaft 211 to rotate counterclockwise (rotation angle up to 90°) through the right first connecting rod 204 and the right second connecting rod 206. The right swing cylinder 214 fixed on the right sliding shaft 212 drives the right fixed claw 217 to rotate clockwise, thereby canceling the clamping effect on the packaged material. During the clockwise rotation of the right fixed claw 217, if the packaging bag rotates together with the fixed claw, after rotating a certain angle, the right discharge baffle 220 will limit the rotation of the packaging bag, ensuring the effective and complete separation of the right fixed claw 217 and the packaging bag. The separated packaging bag freely falls into the packaging bag collection bin 6 under the action of its own weight.

[0086] After the packaging bag falls into the packaging bag collection bin, the right swing cylinder piston 202 again drives the right main shaft 211 to rotate clockwise through the right first connecting rod 204 and the right second connecting rod 206, and the roller 213 returns to its initial horizontal position. Subsequently, the right main shaft sliding cylinder 210 continues to drive the sliding shaft 212 to slide back to its initial position, waiting for the next feeding of the bagged material package.

[0087] All the drives involved in the above process are pneumatic drives (other drive methods such as electric and hydraulic can also be used), and are completely controlled by the automatic control system programming, fully automatically completing all processes, with a high degree of automation, greatly reducing the labor intensity and cost of labor. By controlling the number of swings to ensure complete discharge of the material, the material utilization rate is maximally guaranteed; there is only one cutting in the whole process, effectively reducing the pollution of the packaging bag cutting chips to the material.

[0088] The present invention provides an automatic bag unloader, which has a high degree of automation and can make the most of materials. It can not only greatly reduce the labor intensity of the existing manual bag unloading, reduce labor costs, and prevent operators from suffering from occupational disease hazards, but also separate materials and packaging bags more efficiently and thoroughly.

[0089] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0090] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A bag-opening device, characterized in that, it includes a bracket structure (5), a collection bin structure, a cutting structure, and a feeding and discharging structure; Both the collection bin structure and the cutting structure are installed on the bracket structure (5); The collection bin structure includes a packaging bag collection bin (6) and a material collection bin (7) arranged in parallel; The feeding and discharging structure includes a swing assembly, a bag clamping and discharging assembly, and a slide plate assembly; An external bagged material package bearing position is provided on the slide plate assembly; the swing assembly can drive the slide plate assembly to swing, and the bag clamping and discharging assembly is installed on the slide plate assembly; a part of the structure of the slide plate assembly can move between above the packaging bag collection bin (6) and above the material collection bin (7); The swing assembly includes a left swing part and a right swing part; The left swing part and the right swing part have the same structure and are symmetrically arranged; The right swing part includes a right cylinder, a right first connecting rod (204), and a right second connecting rod (206); The right cylinder includes a right swing cylinder body (201) and a right swing cylinder piston (202); the right swing cylinder body (201) is fixedly installed on the bracket structure (5), the right swing cylinder piston (202) is rotatably connected to one end of the right first connecting rod (204), the other end of the right first connecting rod (204) is rotatably connected to one end of the right second connecting rod (206), and the other end of the right second connecting rod (206) is fixedly connected to the right main shaft (211) of the slide plate assembly.

2. The bag-opening device according to claim 1, characterized in that, The slide plate assembly includes a left slide plate part and a right slide plate part, and the left slide plate part and the right slide plate part have the same structure and are symmetrically arranged; The right slide plate part includes a right front bearing (209), a right front bearing seat (208), a right rear bearing, a right rear bearing seat, a right main shaft (211), a right slide shaft (212), a roller group, a right baffle (218), a right screw (219), a right support block (221), and a right main shaft sliding cylinder (210); The right main shaft (211) is supported on the bracket structure (5) through the right front bearing (209), the right front bearing seat (208), the right rear bearing, and the right rear bearing seat, and the right main shaft (211) straddles the collection bin structure; The right slide shaft (212) is slidably connected to the right main shaft (211); the right slide shaft (212) can move between above the packaging bag collection bin (6) and above the material collection bin (7) along the length direction of the right main shaft (211) under the action of the right main shaft sliding cylinder (210); A roller group is arranged between the right main shaft (211) and the right support block (221), both ends of the roller group are provided with screws (219), and the right support block (221) and the right slide shaft (212) are fixedly connected through the right screw (219); a right baffle (218) is also provided at the end of the roller group; The roller group includes a plurality of rollers (213) arranged parallel to each other; The external bagged material package bearing position is arranged on the top surface of the roller group.

3. The bag-opening device according to claim 2, characterized in that the bag clamping and bag discharging assembly includes a left bag clamping and bag discharging component and a right bag clamping and bag discharging component; the right bag clamping and bag discharging component includes a right swing cylinder (214), a right fixed claw (217), and a right bag discharging baffle (220); the right bag discharging baffle (220) and the right swing cylinder (214) are fixed on the right slide shaft (212), the right fixed claw (217) is hinged to the right swing cylinder (214), and the right fixed claw (217) can be driven by the right swing cylinder (214) to rotate and swing; the left bag clamping and bag discharging component and the right bag clamping and bag discharging component have the same structure and are arranged symmetrically in mirror image; the left bag clamping and bag discharging component is installed on the left slide shaft.

4. The bag-opening device according to claim 1, characterized in that the cutting structure includes a cutting wheel drive motor (301), a cutting wheel (302), a cutting wheel swing cylinder (303), and a cutting wheel swing arm (304); one end of the cutting wheel swing arm (304) is rotatably connected to the support structure (5), and one end of the cutting wheel swing arm (304) is located above the packaging bag collection bin (6); the other end of the cutting wheel swing arm (304) extends above the material collection bin (7), and the cutting wheel drive motor (301) and the cutting wheel (302) are installed at the other end of the cutting wheel swing arm (304); the cutting wheel swing cylinder (303) is located above the material collection bin (7), one end of the cutting wheel swing cylinder (303) is rotatably connected to the support structure (5), and the other end is rotatably connected to the middle of the cutting wheel swing arm (304).

5. The bag-opening device according to claim 1, characterized in that the right swing component further includes a right first hinge pin (203), a right second hinge pin (205), and a right third pin (207); the swing cylinder piston 202 is hinged to the right first connecting rod (204) through the right first hinge pin 203, the right first connecting rod (204) is hinged to the right second connecting rod (206) through the right second hinge pin 205, and the right second connecting rod (206) is fixedly connected to the right main shaft (211) through the right third pin (207).

6. The bag-opening device according to claim 3, characterized in that the right slide plate component further includes a propulsion cylinder pin (215) and a hinge seat (216); the piston of the right main shaft sliding cylinder (210) is hinged to the right slide shaft (212) through the mutual matching of the propulsion cylinder pin (215) and the hinge seat (216).

7. The bag-opening device according to claim 1, characterized in that it further includes a support peripheral cover plate, and the support peripheral cover plate is installed on the outside of the support structure (5).

8. A bag-opening method, characterized in that using the bag-opening device according to any one of claims 1 to 7, further comprising the following steps: Step 1: Place the external bagged material on the drum (213), and define the position where this drum (213) is located as the initial position; Step 2: Drive the right fixed claw (217) to rotate counterclockwise. The right fixed claw (217) and the left fixed claw of the left bag clamping and bag discharging component pierce the packaging bag and clamp the packaging bag; Step 3: The right main shaft sliding cylinder (210) drives the right sliding shaft (212), and the left main shaft sliding cylinder drives the left sliding shaft to drive the bagged material package placed on the drum (213); The bagged material package stops sliding when it slides to directly above the material collection bin (7); Step 4: The cutting wheel swing cylinder (303) drives the cutting wheel (302) to rotate at high speed. At the same time, the cutting wheel swing cylinder (303) drives the cutting wheel swing arm (304) to swing to complete the cutting of the bagged material package; Step 5: After the cutting and completion of cutting, most of the material in the bag freely leaks into the material collection bin (7), and a small part of the material still remains in the bag; Step 6: The main right swing cylinder piston (202) drives the right main shaft (211) to rotate reciprocally in the clockwise and counterclockwise directions through the right first connecting rod (204) and the right second connecting rod (206). The main left swing cylinder piston drives the left main shaft to rotate reciprocally in the clockwise and counterclockwise directions through the left first connecting rod and the left second connecting rod; Thus, the small part of the material remaining in the packaging bag is completely discharged; Step 7: After the material is completely discharged, the right swing cylinder piston (202) and the left swing cylinder piston both retract completely, and both drums (213) return to the initial horizontal position; Step 8: The right main shaft sliding cylinder (210) drives the right sliding shaft (212), and the left main shaft sliding cylinder drives the left sliding shaft to drive the packaging bag placed on the drum (213) to move. The packaging bag stops moving when it moves to directly above the packaging bag collection bin (6); Step 9: The main right swing cylinder piston (202) drives the right main shaft (211) to rotate counterclockwise by 90° through the right first connecting rod (204) and the right second connecting rod (206). The main left swing cylinder piston drives the left main shaft to rotate counterclockwise by 90° through the left first connecting rod and the left second connecting rod. At the same time, the right swing cylinder (214) drives the right fixed claw (217) to rotate clockwise, and the left swing cylinder drives the left fixed claw to rotate clockwise, thereby canceling the clamping effect on the material packaging and realizing the separation of the fixed claw and the packaging bag. The separated packaging bag freely falls into the packaging bag collection bin (6) under the action of its own weight; Step 10: The right swing cylinder piston (202) drives the right main shaft (211) to rotate clockwise again through the right first connecting rod (204) and the right second connecting rod (206). The left swing cylinder piston drives the left main shaft to rotate clockwise again through the left first connecting rod and the left second connecting rod, so that both drums (213) return to the initial horizontal position; Finally, the main shaft sliding cylinders on both sides continue to drive the sliding shafts on both sides to slide back until the drum (213) reaches the initial position, waiting for the next feeding of the bagged material package.

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