A dust-free multi-station high-efficiency ton bag automatic transfer unpacking device

Abstract

The application provides a dust-free multi-station high-efficiency ton bag automatic transfer unpacking device, and relates to the field of ton bag unpacking equipment. It comprises a hopper and a plurality of unpacking stations arranged above the hopper. The unpacking station comprises a bag cutting knife holder and a hanger. A plurality of ton bags are hung in the hanger, and the bottom of the ton bag is in contact with the bag cutting knife holder. A bag cutting mechanism corresponding to each ton bag is arranged in the bag cutting knife holder. The bag cutting mechanism comprises a rotary support, a mounting bracket and a knife head. The knife head is connected with the rotary support through the mounting bracket. A plurality of rotary supports are sequentially meshed through a driving gear and a plurality of driven gears. A motor drives the driving gear to rotate and drives the rotary support and the driven gears to rotate. The knife head and the mounting bracket rotate synchronously with the rotary support. The ton bag and the corresponding rotary support are coaxially arranged, and the knife head penetrates into the ton bag. The application can efficiently transfer and unpack a plurality of ton bags through a plurality of stations.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ton bag unpacking equipment, in particular to a dust-free multi-station efficient ton bag automatic transfer unpacking device. BACKGROUND

[0002] A ton bag is a flexible transport packaging container with the advantages of moisture-proof, dust-proof, radiation-proof and firm safety. The ton bag is often used for transporting bulk powdery materials. When the ton bag is loaded and unloaded at the port, a special lifting tool or lifting beam is used to hoist the ton bag from the transport ship to the loading and unloading site, and then the ton bag is tilted or cut to make the bulk powdery material in the ton bag free fall to the lower collecting equipment and be collected on the truck or belt conveyor for next transfer.

[0003] At present, manual knife operation or special unpacking equipment is generally used for ton bag unpacking. A hazardous waste ton bag automatic unpacking machine is disclosed in Chinese Patent No. CN217575962U, and a box is provided. The bottom of the box is provided with a discharge port. The discharge port allows the ton bag containing hazardous waste to pass through the discharge port and fall on the cutting knife.

[0004] In the above patent document, although safety hazards caused by manual cutting of the bag can be avoided, the unpacking of multiple ton bags cannot be performed at the same time, the overall efficiency is too low, and in order to ensure that the ton bag can be cut, multiple cutting blades are arranged in the receiving hopper below the box. However, this will result in a complex overall structure, which will further cause the material to be blocked in the receiving hopper, thereby reducing the unpacking efficiency of the ton bag. SUMMARY

[0005] In order to improve the low unpacking efficiency of the existing ton bag, the present application provides a dust-free multi-station efficient ton bag automatic transfer unpacking device.

[0006] The present application provides a dust-free multi-station efficient ton bag automatic transfer unpacking device, which adopts the following technical solution:

[0007] A dust-free multi-station efficient ton bag automatic transfer unpacking device, comprising a hopper and a plurality of unpacking stations arranged above the hopper, the unpacking station comprising a bag cutting knife holder and a hanger;

[0008] A plurality of ton bags are hung in the hanger, and the bottom of the ton bag is in contact with the bag cutting knife holder;

[0009] A bag cutting mechanism is arranged in the bag cutting knife holder and corresponds to each ton bag, the bag cutting mechanism comprising a slewing bearing, a mounting bracket and a knife head, and the knife head is connected to the slewing bearing through the mounting bracket;

[0010] The plurality of slewing bearings are sequentially meshed by a driving gear and a plurality of driven gears, the motor drives the driving gear to rotate and drive the slewing bearings and the driven gears to rotate, and the cutter head and the mounting frame rotate synchronously with the slewing bearings.

[0011] The ton bag is coaxially arranged with the corresponding slewing bearing, and the cutter head penetrates into the ton bag.

[0012] According to the above technical scheme, when the motor rotates, the driving gear rotates, and the driven gears or the slewing bearings meshed with the driving gear also rotate at the same time, that is, the rotation of the plurality of slewing bearings can be realized by driving of one motor, when the slewing bearings start to rotate, the cutter head connected with the mounting frame and the slewing bearings rotates synchronously, thereby breaking the bottom of the ton bag, since a plurality of ton bags are arranged in one hanger, and all the ton bags are broken under the driving of the motor, the materials in the ton bags flow downward to the hopper; one hopper can correspond to a plurality of unpacking stations, and a plurality of ton bags can be batch broken at the same time, thereby greatly improving the unpacking efficiency.

[0013] Optionally, the inner ring of the slewing bearing is connected with the ton bag breaking cutter frame, one end of the mounting frame is connected with the outer ring of the slewing bearing, and the other end extends to the inner side of the slewing bearing, and the cutter head is detachably arranged at the other end of the mounting frame.

[0014] According to the above technical scheme, the inner ring of the slewing bearing is connected with the ton bag breaking cutter frame in a fixed state, and the outer ring of the slewing bearing is meshed with the driving gear or the driven gear, so that the plurality of slewing bearings in one ton bag breaking cutter frame can be in a rotating state (the inner ring of the slewing bearing is fixed, and the outer ring of the slewing bearing rotates) after the motor drives the driving gear, and the mounting frame for mounting the cutter head is connected with the outer ring of the slewing bearing (specifically, the mounting frame is connected with the bottom of the outer ring of the slewing bearing, and does not interfere with the meshing of the outer ring of the slewing bearing and the driving gear or the driven gear), and after the outer ring of the slewing bearing drives the cutter head to rotate, the cutter head cuts the bottom of the ton bag, thereby breaking the ton bag, and the materials in the ton bag automatically enter the hopper under the action of gravity.

[0015] Further, the cutter head performs circumferential motion around the axis of the slewing bearing under the driving of the slewing bearing, and the driving of the cutter head is stopped before the cutter head rotates 360°, so as to prevent the bottom of the ton bag from being cut into a circular opening and causing the cloth at the circular opening position of the ton bag to fall into the hopper, in the case that the cloth falling does not pollute the materials, the greater the rotation angle of the cutter head, the faster the materials flow out of the ton bag, and the existence of the dead angle is reduced, so as to ensure that the materials can flow out of the ton bag.

[0016] Optionally, the outer ring of the slewing bearing is provided with a tooth, and the driving gear or the driven gear is engaged with the slewing bearing through the tooth.

[0017] By adopting the above technical scheme, the plurality of slewing bearings are arranged at intervals in the unpacking support, and the adjacent two slewing bearings are engaged with the driving gear or the driven gear through the tooth (the two slewing bearings located at the front end and the rear end of the connection sequence can be in a separated state or connected through a transmission gear), so that all the slewing bearings can rotate simultaneously after the driving gear is driven to rotate by the motor, thereby realizing simultaneous tearing of the plurality of ton bags and improving the unpacking efficiency.

[0018] Optionally, the unpacking cutter is arranged on the top of the hopper, the top of the unpacking cutter is provided with a pressure sensor, the hanger is arranged on the top of the unpacking cutter and covers the pressure sensor, the pressure sensor collects a pressure value and transmits the pressure value to the controller through a signal line, and the controller controls the rotation direction and the rotation number of the motor.

[0019] By adopting the above technical scheme, after the hanger is hung with the plurality of ton bags and moved to the unpacking cutter, the pressure sensor can collect the overall pressure value generated by the hanger and the plurality of ton bags on the pressure sensor, that is, the overall weight of the hanger and the plurality of ton bags, when the overall pressure value approaches a preset value, the hanger and the unpacking cutter are in an aligned state, then the controller controls the motor to start rotating to complete the unpacking operation, after the unpacking is completed, the overall pressure value gradually decreases, and when the overall pressure value decreases to another preset value, it indicates that the material in the ton bag completely flows out of the ton bag, and the hanger can be hung away from the unpacking cutter; if the overall pressure value is obviously higher than the other preset value, it indicates that there are still a lot of materials in the ton bag or the ton bag is not torn, and the controller controls the motor to reverse rotation to perform the unpacking operation again and form a disturbance effect on the torn ton bag, so as to ensure that all the materials in the ton bag fall into the hopper.

[0020] Optionally, the outer side of the unpacking cutter is provided with a wind deflector, the outer side of the hanger is provided with a cover plate, the top of the unpacking cutter and the bottom of the hanger are both in an open state, and a cavity in communication and closed is formed between the hanger, the unpacking cutter and the hopper.

[0021] By adopting the above technical scheme, after the hanger is hung on the unpacking cutter, the cavity formed between the hanger, the unpacking cutter and the hopper is in a relatively closed state, so that the dust generated in the process of the material flowing from the ton bag to the hopper cannot be scattered everywhere, and a dust-free operation can be achieved, thereby protecting the environment and the nearby operators.

[0022] Optionally, the cutter head extends upward from the unpacking cutter into the hanger, and the material in the ton bag is transported on the inner side of the cavity.

[0023] By adopting the technical scheme, the bottom of the ton bag contacts the bagging cutter during the process of hoisting the hanger to the hanger, and the ton bag collapses towards the direction of the bagging cutter after the hanger is placed, in this process, the cutter head penetrates into the ton bag, and then the cutter head rotates around the axis of the rotary support after the motor drives the rotary support, thereby realizing the cutting of the ton bag and avoiding the idle rotation of the cutter head.

[0024] Optionally, the top outer side of the hanger is provided with an ear, and the top inner side of the hanger is provided with a crossbeam and a plurality of hanger rods corresponding to the ton bags, the crossbeam is fixedly arranged on the top inner side of the hanger, and the side of the crossbeam facing the ton bags is provided with a receiving groove.

[0025] The upper part of the ton bag is provided with a pair of lifting belts, one end of the hanger rod is arranged in the receiving groove, and the other end of the hanger rod extends to the outside of the hanger through the pair of lifting belts.

[0026] By adopting the technical scheme, the hoisting equipment such as a crane can quickly and stably hoist the hanger through the ear, and after the hanger is hoisted and the plurality of ton bags are covered in the hanger, the hanger rod is inserted from the outside of the hanger, the hanger rod is inserted into the receiving groove after penetrating through the pair of lifting belts, so that the position of the hanger rod is fixed, and at this time, the plurality of ton bags can be hoisted and transported together with the hanger by the crane, the action is stable, and the transportation efficiency is high. In order to improve the speed of the hanger rod penetrating through the pair of lifting belts and being inserted into the receiving groove, the cover plate on the top of the hanger can be opened to facilitate observation of the inside of the hanger.

[0027] Optionally, the cover plate is provided with a gap, and the hanger rod extends outward through the gap.

[0028] The wind deflector is provided with a plurality of hydraulic cylinders, and the end of the hanger rod located outside the hanger rotates around the end of the hanger rod located inside the hanger under the pushing of the hydraulic cylinders.

[0029] By adopting the technical scheme, after the hanger rod penetrates through the pair of lifting belts of the ton bag, one end of the hanger rod is inserted into the receiving groove, and the other end penetrates out of the cover plate through the gap and rests on the cover plate, so that the hanger rod cannot move downward in the hanger, thereby ensuring that the ton bag can be reliably hung on the hanger rod and transported synchronously with the hanger after the hanger is hoisted by the crane. After the ton bag is cut by the cutter head and the material flows out of the ton bag, the pushing rod of the hydraulic cylinder rises upward, which lifts the end of the hanger rod located outside the hanger upward, and the end of the hanger rod located inside the hanger rotates in the receiving groove, that is, under the pushing of the hydraulic cylinder, the hanger rod is in an inclined state, and the ton bag hung on the hanger rod through the lifting belts will slide along the inclined direction of the hanger rod, and the ton bag will shake during the sliding process, thereby ensuring that the material in the ton bag can flow into the hopper.

[0030] Optionally, a push rod of the hydraulic cylinder is provided with a bracket, and the boom is arranged in the bracket.

[0031] By adopting the above technical scheme, under the lifting action of the bracket, the hydraulic cylinder can more stably push the hanger, preventing dislocation between the boom and the push rod of the hydraulic cylinder during upward pushing, and ensuring that the boom can be inclined and the ton bag can be slid under the pushing of the hydraulic cylinder.

[0032] Optionally, the top of the boom is further provided with a pair of limiting mechanisms, the limiting mechanism comprising a pair of limiting plates, and the sling is located between the pair of limiting plates.

[0033] By adopting the above technical scheme, two slings are arranged on the ton bag, one sling is correspondingly limited by one limiting mechanism, that is, one sling is arranged between a pair of limiting plates and can slide between the pair of limiting plates. Thus, by adjusting the distance between the pair of limiting plates, the sliding distance of the sling on the boom can be adjusted. Further, the distance between the pair of limiting plates on the side close to the accommodating groove is greater than the distance between the pair of limiting plates on the side away from the accommodating groove. Thus, after the boom is inclined, the sling on the side close to the accommodating groove can slide a longer distance, thereby disturbing the ton bag to the greatest extent and ensuring that the materials fall into the hopper.

[0034] In summary, the present application has the following advantages:

[0035] 1. A plurality of ton bags are arranged in one hanger, and the hanger is provided with a plurality of slewing bearings which are sequentially meshed by driving gears or driven gears. The tool bit is arranged on the slewing bearing. After the driving gear is rotated by the motor, the plurality of tool bits will rotate simultaneously with the plurality of slewing bearings, thereby simultaneously performing batch unpacking operation on the plurality of ton bags, improving the unpacking efficiency of the ton bags, and eliminating the need for manual knife unpacking operation, thereby improving the safety performance.

[0036] 2. After the hanger is hung on the unpacking knife holder, the hanger is surrounded by the cover plate, the unpacking knife holder is surrounded by the wind shield, and a chamber with good airtightness is formed between the hanger and the hopper. After the ton bag is cut, the materials flow in the chamber, ensuring that the materials in the ton bag enter the hopper, improving the airtightness during transfer and unloading, avoiding the flow of materials from the ton bag to produce a large amount of dust, achieving dust-free effect, and protecting the environment and the health of the operator.

[0037] 3. A plurality of unpacking knife holders are arranged on one hopper, so that a plurality of hangers can simultaneously perform unpacking operation, or part of the hangers are in the state of being connected with the unpacking knife holder and being unpacked, and part of the hangers are in the state of being assembled with the ton bag, so that the transfer and unpacking process of the ton bag is more smooth and reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 is a schematic perspective view of the present application;

[0039] Figure 2 is a schematic perspective view of the bagging knife holder Figure 1 ;

[0040] Figure 3 is a schematic perspective view of the bagging knife holder Figure 2 ;

[0041] Figure 4 is a schematic view of the assembly of the hanger and the bagging knife holder;

[0042] Figure 5 is a schematic perspective view of the hanger;

[0043] Figure 6 is a schematic view of the action state of Figure 5 ;

[0044] In the figure: 1, hopper;

[0045] 2, bagging knife holder; 21, rotary bearing; 210, tooth; 22, mounting frame; 23, knife head; 24, driving gear; 25, driven gear; 26, motor; 27, pressure sensor; 28, wind deflector;

[0046] 3, hanger; 31, cover plate; 310, notch; 32, lifting lug; 33, cross beam; 330, accommodating groove; 34, hanger rod; 340, limiting plate; 35, hydraulic cylinder; 36, bracket;

[0047] 4, ton bag; 40, lifting belt. DETAILED DESCRIPTION

[0048] The present application will be further described below in conjunction with the accompanying drawings. Figures 1-6 The present application will be further described below in conjunction with the accompanying drawings.

[0049] Figure 1 is a schematic perspective view of the present application. Referring to Figure 1 , a dust-free multi-station high-efficiency ton bag automatic transfer unpacking device, comprising a hopper 1 and a plurality of unpacking stations arranged above the hopper 1, the unpacking stations comprising a bagging knife holder 2 and a hanger 3; a plurality of ton bags 4 are hung in the hanger 3, and a wind deflector 28 is arranged around the hanger 3 (the wind deflector 28 can enclose the four sides of a single hanger 3, or can enclose the four sides of a plurality of hangers 3 after they are hung), the bagging knife holder 2 performs unpacking operation on the plurality of ton bags 4 in the hanger 3, and a plurality of unpacking stations are arranged in a hopper 1, and the simultaneous action of the plurality of unpacking stations can greatly improve the transfer and unpacking efficiency of the ton bags 4.

[0050] Figure 2is a schematic perspective view of a bagging knife holder Figure 1 , Figure 3 is a schematic perspective view of a bagging knife holder Figure 2 . Referring to Figure 3 and Figure 4 , a plurality of bagging mechanisms are arranged in a bagging knife holder 2, the number of the bagging mechanisms is consistent with the number of ton bags 4, the bagging mechanism comprises a rotary bearing 21, a mounting frame 22 and a knife head 23, one end of the mounting frame 22 is connected with the outer ring of the rotary bearing 21, the knife head 23 is arranged at the other end of the mounting frame 22, a plurality of teeth 210 are arranged on the outer wall of the outer ring of the rotary bearing 21, a driving gear 24 driven by a motor 26 and a plurality of driven gears 25 are further arranged in the bagging knife holder 2, the driving gear 24 and the driven gears 25 can engage with the teeth 210 of the rotary bearing 21, the rotary bearings 21 of the plurality of bagging mechanisms are arranged in sequence and engaged with the driving gear 24 or the driven gears 25 in sequence to form a whole that rotates synchronously, and the inner ring of the rotary bearing 21 is fixedly arranged on the bagging knife holder 2, so that under the driving of the motor 26, the driving gear 24 drives the rotary bearing 21 engaged with the driving gear 24 to rotate, the driven gears 25 engaged with the rotary bearing 21 also rotate at the same time, and then drive the next rotary bearing 21 engaged with the driven gears 25 to rotate, that is, under the driving of one motor 26, the plurality of rotary bearings 21 in the bagging knife holder 2 can rotate at the same time and drive the corresponding knife heads 23 to rotate.

[0051] Figure 4 is an assembly schematic view of a hanger and a bagging knife holder. Referring to Figure 5, the hanger 3 is provided with a horizontal beam 33 and a plurality of hangers 34, the hanger 3 is provided with a cover plate 31 around and on the top, the horizontal beam 33 is arranged at the middle of the inner side of the top of the hanger 3, a plurality of ton bags 4 are arranged on both sides of the horizontal beam 33, the number of the hangers 34 is consistent with the number of the ton bags 4, the top of the hanger 34 is provided with two limiting mechanisms, when the hanger 3 is provided with a plurality of ton bags 4 (at this time, the ton bag 4 is not connected with the hanger 3), one end of the hanger 34 is inserted into the inside of the hanger 3 through the gap 310 on the cover plate 31, and then inserted into the accommodating groove 330 of the horizontal beam 33 after passing through the two hanger belts 40 of the ton bag 4 in turn, the other end of the hanger 34 is arranged on the cover plate 31 and extends to the outside of the hanger 3 (at this time, the plurality of ton bags 4 are connected with the hanger 3 as a whole through the hanger belt 40 and the hanger 34, that is, the plurality of ton bags 4 can be lifted together with the hanger 3), the hydraulic cylinder 35 is arranged on the wind deflector 28, the hydraulic cylinder 35 on the plurality of wind deflectors 28 corresponds to the other end of the plurality of hangers 34 one by one, the bracket 36 is arranged on the push rod of the hydraulic cylinder 35, the other end of the hanger 34 is arranged on the bracket 36, the bracket 36 increases the contact area between the push rod of the hydraulic cylinder 35 and the hanger 34, so that the push rod of the hydraulic cylinder 35 can reliably push the hanger 34 under the support of the bracket 36 and will not be dislocated or fall off; further, under the surrounding effect of the cover plate 31 and the wind deflector 28, the cavity formed between the hanger 3, the cutter holder 2 and the hopper 1 can be in a relatively closed state, so that the dust generated during the flow of the material in the cavity can be limited in the cavity, achieving the effect of dust-free, which can effectively protect the environment and prevent the operator from inhaling too much dust.

[0052] Figure 5 is a schematic perspective view of the hanger. Referring to Figure 3 A pair of limiting mechanisms are further arranged on the hanger 34, and the pair of limiting mechanisms are used for limiting the two hanger belts 40 of the ton bag 4, so as to prevent the ton bag 4 from shaking or slipping in the hanger 3 during hoisting and transportation. The limiting mechanism includes a pair of limiting plates 340, the hanger belt 40 is arranged between the pair of limiting plates 340, and the distance between the pair of limiting plates 340 is greater than the width of the hanger belt 40, so that the position of the hanger belt 40 can be adjusted while the limiting effect of the hanger belt 40 is achieved, thereby realizing the adjustment and limitation of the position of the ton bag 4 in the hanger 3 before hoisting, ensuring that the plurality of ton bags 4 can be arranged in order in the hanger 3, and ensuring that the plurality of ton bags 4 can be respectively and one by one corresponding to the plurality of cutter heads 23 on the cutter holder 2 after the hanger 3 is placed on the cutter holder 2, so as to ensure that the bottom of the ton bag 4 can be cut by the cutter head 23 to form an opening for the material to flow out, thereby completing the unpacking operation.

[0053] Referring to Figure 4 and Figure 6The pressure sensor 27 is arranged on the top of the bale cutting rack 2, and the lifting lug 32 is arranged on the top outer side of the lifting frame 3. After the crane lifts the lifting frame 3 to the top of the bale cutting rack 2 through the lifting lug 32, the lifting frame 3 will cover the pressure sensor 27, at this time, the pressure sensor 27 will collect the pressure value, and the value will be transmitted to the controller through the signal line. The controller is integrated with an analysis mechanism, which can analyze the pressure value transmitted by the pressure sensor 27. When the pressure value approaches a preset value (which reflects the total weight of the lifting frame 3 and the plurality of ton bags 4 filled with materials), the analysis mechanism will send the instruction that the motor 26 can rotate in the forward direction to the controller, and the controller controls the motor 26 to rotate in the forward direction. After the motor 26 rotates, the plurality of slewing bearings 21 will synchronously rotate under the meshing transmission action of the driving gear 24 and the plurality of driven gears 25. The cutter head 23 is connected to the slewing bearing 21 through the mounting frame 22. After the lifting frame 3 is hung on the bale cutting rack 2, the cutter head 23 has been pierced into the ton bag 4, and the cutter head 23 extends to the inner side of the slewing bearing 21 and is close to the inner ring of the slewing bearing 21 under the connection action of the mounting frame 22. At this time, after the cutter head 23 rotates synchronously with the slewing bearing 21, the cutter head 23 will cut the ton bag 4 and form a large enough opening (at this time, the cloth of the ton bag 4 at the opening remains connected to the ton bag 4). The material will flow into the hopper 1 through the opening. Since a plurality of ton bags 4 are hung in one lifting frame 3, and a plurality of lifting frames 3 can be hung in one hopper 1, and each lifting frame 3 corresponds to one bale cutting rack 2, through the driving of the plurality of motors 26 in the plurality of bale cutting racks 2, the batch unpacking operation of the plurality of ton bags 4 can be realized, and the unpacking efficiency of the ton bags 4 is effectively improved.

[0054] Further, when the number of ton bags 4 waiting for unpacking is sufficient, part of the lifting frames 3 can be in the unpacking state (i.e., the lifting frame 3 is located on the top of the bale cutting rack 2), and the remaining part of the lifting frames 3 is in the ton bag 4 assembling state (i.e., the lifting frame 3 is located on the outer side of the hopper 1). In this way, when the ton bags 4 in part of the lifting frames 3 are unpacked, the ton bags 4 in the remaining part of the lifting frames 3 can immediately enter the unpacking state, thereby improving the smoothness of the batch unpacking operation process of a large number of ton bags 4.

[0055] After the motor 26 rotates for a certain number of turns, the cutter head 23 rotates about 300° around the axis of the rotary bearing 21 (if the cutter head 23 rotates too little, the notch produced by the cutter head 23 at the bottom of the ton bag 4 is too small, the material flows too slowly, and is easily accumulated in the ton bag 4 and cannot completely flow out; if the cutter head 23 rotates too much, the material at the notch may fall off the ton bag 4 and flow into the hopper 1 with the material, causing pollution of the material or blockage of the hopper 1), the motor 26 stops rotating, and at this time, if the value collected by the pressure sensor 27 is close to another preset value (the preset value reflects the total weight of the ton bag 4 after the hanger 3 and the material completely flow out), the crane can lift the hanger 3 away from the ton bag cutter frame 2 through the lifting lug 32 at the top outer side of the hanger 3, completing the complete unpacking operation process of the ton bag 4.

[0056] If the pressure value transmitted by the pressure sensor 27 is much greater than the other preset value (the pressure value reflects that there is still a ton bag 4 that has not been unpacked) after one rotation of the cutter head 23, the analysis mechanism will transmit the instruction that the motor 26 needs to rotate in the opposite direction to the controller through the signal line, and the controller controls the motor 26 to rotate in the opposite direction. After the motor 26 rotates in the opposite direction, the cutter head 23 performs another bagging operation in the opposite direction, ensuring that the pressure value transmitted by the pressure sensor 27 is close to the preset value, that is, all ton bags 4 are cut and unpacked, and in the process of the reverse action of the cutter head 23, a certain degree of disturbance to the ton bag 4 is formed, so that the material can flow out through the notch and will not be stuck in the corner of the ton bag 4.

[0057] Figure 5 is Figure 6 the action state reference figure. Referring to ​, if the vertical pressure value transmitted by the pressure sensor 27 is slightly greater than another preset value after the cutter head 23 rotates once (the pressure value reflects that all the ton bags 4 are punctured, but there is material remaining in the ton bags 4), at this time, the motor 26 stops working, the push rod of the hydraulic cylinder 35 rises upward, thereby the end of the hanger 34 outside the hanger 3 is pushed upward and rotates around the end of the hanger 34 inside the hanger 3, so that the hanger 34 as a whole is in an inclined state, and the height of the end of the hanger 34 inside the hanger 3 is lower than the height of the end of the hanger 34 outside the hanger 3, thereby promoting the two hanger belts 40 of a ton bag 4 to slide between a corresponding pair of limiting plates 340, so that the ton bag 4 slides in the hanger 3, and after the two hanger belts 40 reach the limiting limit, the ton bag 4 will shake under the action of gravity, thereby promoting the material in the corner of the ton bag 4 to flow out, so as to ensure that all the material in the ton bag 4 can flow into the hopper 1 after the ton bag 4 is punctured, further, the distance between the pair of limiting plates 340 close to the accommodating groove 330 can be greater than the distance between the pair of limiting plates 340 away from the accommodating groove 330, so that the hanger belt 40 close to the accommodating groove 330 can slide a longer distance, so as to make the opening of the ton bag 4 in a more open state, thereby forming a pulling action on the ton bag 4 and forming the shaking of the ton bag 4, so as to ensure that the material can be pulled out of the ton bag 4, avoiding manual pulling or shaking of the ton bag 4, effectively improving the unpacking efficiency.

[0058] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A dust-free, multi-station, high-efficiency automatic transfer and unpacking device for ton bags, characterized in that, It includes a hopper (1) and multiple unpacking stations located above the hopper (1), wherein the unpacking stations include a slicing knife holder (2) and a hanger (3); Multiple ton bags (4) are suspended inside the hanger (3), and the bottom of the ton bags (4) is in contact with the bag-cutting knife holder (2); The bag-cutting knife holder (2) is equipped with a bag-cutting mechanism that corresponds to a number of ton bags (4) respectively and one by one. The bag-cutting mechanism includes a slewing bearing (21), a mounting frame (22) and a cutter head (23). The cutter head (23) is connected to the slewing bearing (21) through the mounting frame (22). The slewing bearings (21) are sequentially meshed by a driving gear (24) and multiple driven gears (25). The motor (26) drives the driving gear (24) to rotate, and drives the slewing bearings (21) and driven gears (25) to rotate. The cutter head (23) and the mounting bracket (22) rotate synchronously with the slewing bearings (21). The ton bag (4) is coaxially arranged with the corresponding slewing bearing (21), and the cutter head (23) pierces into the ton bag (4); The inner ring of the slewing bearing (21) is connected to the slicing knife holder (2), one end of the mounting bracket (22) is connected to the outer ring of the slewing bearing (21), and the other end extends to the inner side of the slewing bearing (21). The cutter head (23) is detachably mounted on the other end of the mounting bracket (22). The outer ring of the slewing bearing (21) is provided with teeth (210), and the driving gear (24) or driven gear (25) meshes with the slewing bearing (21) through the teeth (210); The slicing knife holder (2) is located on the top of the hopper (1). A pressure sensor (27) is located on the top of the slicing knife holder (2). The hanger (3) is located on the top of the slicing knife holder (2) and covers the pressure sensor (27). The pressure sensor (27) collects pressure values ​​and transmits them to the controller through a signal line. The controller controls the rotation direction and number of rotations of the motor (26).

2. The dust-free, multi-station, high-efficiency ton bag automatic transfer and unpacking device according to claim 1, characterized in that, The outer side of the slicing knife holder (2) is provided with a wind baffle (28), and the outer side of the hanger (3) is provided with a cover plate (31). The top of the slicing knife holder (2) and the bottom of the hanger (3) are both open. The hanger (3), the slicing knife holder (2) and the hopper (1) form a connected and sealed chamber.

3. The dust-free, multi-station, high-efficiency ton bag automatic transfer and unpacking device according to claim 2, characterized in that, The cutter head (23) extends upward from the cutter holder (2) into the hanger (3), and the material in the ton bag (4) is conveyed inside the chamber.

4. The dust-free, multi-station, high-efficiency ton bag automatic transfer and unpacking device according to claim 2, characterized in that, The top outer side of the hanger (3) is provided with a lifting lug (32), and the top inner side of the hanger (3) is provided with a crossbeam (33) and a number of lifting rods (34) equal to the number of ton bags (4). The crossbeam (33) is fixedly installed on the top inner side of the hanger (3), and the side of the crossbeam (33) facing the ton bag (4) is provided with a receiving groove (330). The upper part of the ton bag (4) is provided with a pair of lifting straps (40), one end of the lifting rod (34) passes through the receiving groove (330), and the other end of the lifting rod (34) passes through the pair of lifting straps (40) and extends to the outside of the hanger (3).

5. The dust-free, multi-station, high-efficiency ton bag automatic transfer and unpacking device according to claim 4, characterized in that, The cover plate (31) has a notch (310), and the hanging rod (34) extends outward through the notch (310); The wind deflector (28) is provided with several hydraulic cylinders (35), and the end of the boom (34) located outside the hanger (3) rotates around the end of the boom (34) located inside the hanger (3) under the push of the hydraulic cylinders (35).

6. The dust-free, multi-station, high-efficiency ton bag automatic transfer and unpacking device according to claim 5, characterized in that, The hydraulic cylinder (35) has a support (36) on its push rod, and the lifting rod (34) is mounted in the support (36).

7. The dust-free, multi-station, high-efficiency ton bag automatic transfer and unpacking device according to claim 5, characterized in that, The top of the boom (34) is also provided with a pair of limiting mechanisms, the limiting mechanisms including a pair of limiting plates (340), and the sling (40) is located between the pair of limiting plates (340).

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